CN203347712U - Rotary reducing oil pipe clamping device - Google Patents

Abstract

A rotary reducing oil pipe clamping device comprises a shell, a hydraulic cylinder, slip assemblies or tongs tooth assemblies, a side door, a side door bolt, a rotating disc, a transmission device, a locating device, a steel ball, an oil mouth joint, a spring pin and a sealing mechanism. Due to the fact that the multiple sets of slip assemblies of different inner diameter specifications or the multiple sets of tongs tooth assemblies of different inner diameter specifications are provided, the change of the outer diameter specification of an oil pipe needing clamping can be adapted by selecting one set of slip assemblies or one set of tongs tooth assemblies of which the inner diameter specification is matched with the outer diameter specification of the oil pipe needing clamping, and making the set of slip assemblies or the set of tongs tooth assemblies of which the inner diameter specification is matched with the outer diameter specification of the oil pipe needing clamping be used in place according to the outer diameter specification of the oil pipe needing clamping through the rotary rotating disc. Therefore, working time is saved, production efficiency is improved, and new potential safety hazards are completely eliminated.

Description

Swinging reducing oil pipe clamping device

Technical field

The utility model relates to a kind of oil pipe clamping device, especially swinging reducing oil pipe clamping device.

Background technology

The oil pipe clamping device is the utensil of the clamping oil pipe that uses in the oil gas field shaft mouth operation, at present, general oil pipe clamping device adopts hydraulic-driven, is referred to as the hydraulic oil pipe binding clasp, when lower oil tube, the hydraulic oil pipe binding clasp can realize clamping oil pipe well, the hydraulic oil pipe binding clasp consists of housing, hydraulic cylinder, slips assembly, side door, side door bolt, port connection, and the hydraulic oil pipe binding clasp also comprises sealing mechanism, the hydraulic oil pipe binding clasp is the bilateral symmetry structure, and its left side structure is identical and symmetrical with the specification framework of right side structure, the main through hole that the center of its housing is circular configuration, two flange arrangements are arranged on housing, the main through hole two ends that are housing are fixedly connected with respectively flange arrangement, the center line of flange arrangement and the center line of main through hole are on same straight line, housing has two side through hole, and two side through hole communicate with main through hole respectively, and a side through hole is positioned at main through hole one side, another side through hole is positioned at main through hole opposite side, the center line of two side through hole on same straight line and with the vertical and intersectant centerline of main through hole, hydraulic cylinder comprises cylinder barrel and cylinder cap, piston and piston rod, screw mandrel, cylinder barrel bolt and sealing device, piston rod is fixedly connected on a side of piston, the outer end of piston rod is the pin thread structure, its top is plane, be referred to as to push up plane, the plane, top is vertical with the center line of piston, the two sides that are connected with the plane, top are that plane is side plane, its two side plane is vertical with the plane, top respectively, and be parallel to each other, the vertical distance that its minute is clipped to the center line of piston equates, between side plane and piston rod main body, fluted structure is connected, the groove structure open at both ends, its groove bottom is parallel with side plane, its two grooves side is parallel to each other, and vertical with groove bottom, the top plane parallel of groove side and piston rod, the blind hole that connection wire rod is arranged on piston rod, the blind hole of connection wire rod and the central through hole of piston interlink, the blind hole of connection wire rod and the central through hole of piston and piston rod, the center line of piston is on same straight line, in the blind hole of the central through hole of piston and the connection wire rod linked together, internal thread is arranged, screw mandrel comprises body and step, body is circular pin, the step of the outwardly annular of intermediate peripheral wall of body, its step separates leading portion and back segment to the screw mandrel body, the external diameter of leading portion is less than the external diameter of back segment, on the leading portion of body, male thread is arranged.The slips assembly comprises slip spider, slip insert, the box structure is arranged on slip spider, the box structure is convex slot, it consists of inside groove and water jacket, there is convex slot in the outside that is the pedestal of slip spider, horizontal break-through pedestal, its groove bottom is plane, convex slot comprises inside groove and water jacket, the width of its inside groove is greater than the width of water jacket, vertical distance between two groove sides of water jacket is identical with the vertical distance between two groove bottom of two groove structures at the top of the pin thread structure of the outer end of piston rod, the width of the groove structure groove bottom of the pin thread structure of the outer end of its piston rod is identical with the width of the groove side of the water jacket of the box structure of slip spider, the degree of depth of the inside groove of the vertical distance of the plane, pin thread structure top of the outer end of piston rod to the groove side adjacent with the plane, top of groove structure and the box structure of slip spider is identical, vertical distance between two groove sides of the vertical distance between two side planes of the pin thread structure of the outer end of piston rod and the inside groove of the convex slot of the box structure of slip spider equates, slip spider and slip insert interconnect, adopt direct fixed connection structure between slip spider and slip insert or adopt by the dog screw fixed connection structure of socket cap, when between slip spider and slip insert, adopting direct fixed connection structure, do not pass through other member between slip spider and slip insert, slip spider directly is fixedly connected with mutually with slip insert, and the slips assembly is as a whole, when between slip spider and slip insert, adopting the dog screw fixed connection structure that passes through socket cap, the slips assembly comprises the dog screw that also comprises socket cap, and there is external screw thread the rear end of the dog screw of socket cap, slip spider has interior arc-shaped structure, interior arc-shaped structure and box structure lay respectively at slip spider pedestal in, the outside, circular connecting hole is arranged on interior arc-shaped structure, the center line of the circular connecting hole of its slip spider and the center line of slip spider are on same straight line, and vertical with the groove bottom of the convex slot of the box structure of slip spider, the positioning screw hole that two socket caps are arranged on slip spider, the positioning screw hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectively, the center line of the positioning screw hole of two socket caps point-blank, the vertical and intersectant centerline of its center line and circular connecting hole, in the positioning screw hole of socket cap, internal thread is arranged, slip insert is the circular arc sheet, in its slip insert has, outer two wall side faces, a wall is inner circle arc side face, be referred to as the inwall side face, another wall side face is cylindrical arc side face, be referred to as the outer wall side face, on its inwall side face, the locking teeth structure is arranged, outwardly circular coupling bar on the outer wall side face, locking teeth structure and circular coupling bar lay respectively at the slip insert body in, the outside, the center line of circular coupling bar and the center line of slip insert are point-blank, there is annular fixed groove the outer end of circular coupling bar, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, the circular coupling bar of its slip insert injects in the circular connecting hole of its slip spider and matches like this, the outer wall side face of slip insert and the inwall side face of the interior arc-shaped structure of slip spider are mutually by connecting, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps on slip spider, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of two socket caps clamp and block circular coupling bar, thereby the circular coupling bar of fixing and locking, like this, piston rod packs in the hole in the middle of side door, the pin thread structure of piston rod injects in the box structure on slip spider and mutually coincide, piston and piston rod are inserted in cylinder barrel, internal thread in the blind hole of the connection wire rod of the male thread on the leading portion of the body of screw mandrel and the central through hole of piston and the piston rod that links together screws and is connected, the cylinder cap sealing shroud connects the back segment of the body of screw mandrel, the sealing device of hydraulic cylinder comprises sealing and the sealing between cylinder cap and cylinder barrel and the sealing between side door and cylinder barrel between the back segment of body of cylinder cap and screw mandrel, sealing between piston rod and side door, sealing between piston rod and side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, for the sealing that makes this place very reliable, the sealing ring that multiplet is arranged, and the auxiliary seal of middle O-ring seals, side door itself is connected with housing by the side door bolt, side door is positioned at the side through hole outside of housing, cylinder cap and cylinder barrel are fixed together by cylinder barrel bolt and side door, and the slips assembly is installed and connected in the side through hole of housing, and the sealing between side door and cylinder barrel adopts y-shaped ring to realize two way seal, the sealing mechanism of hydraulic oil pipe binding clasp comprises sealing device and the sealing between side door and housing and the sealing of oil circuit of hydraulic cylinder, two oil circuit holes are arranged in the body of housing, one oil circuit hole collar extension of its housing is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, its oil circuit hole collar extension is fixedly connected with port connection, another oil circuit hole collar extension of its housing also is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, its oil circuit hole collar extension is fixedly connected with port connection, an oil circuit hole is arranged in the cylinder cap body, and from the cylinder cap inboard, all side that be connected corresponding to cylinder barrel pierces into the cylinder cap body in its oil circuit hole, and passes in the middle of the cylinder cap inboard, cylinder barrel has an oil circuit hole, the one oil circuit orifice sealing in all side oil circuit apertures in cylinder cap oil circuit hole and the oil circuit hole of cylinder barrel joins, oil circuit aperture in the middle of the inboard in the oil circuit hole of cylinder cap is led in cylinder barrel, two oil circuit holes of crossing side door are arranged in its side door, the two oil circuit apertures in an oil circuit hole of side door interlink with another oil circuit aperture in the oil circuit hole of cylinder barrel and an oil circuit hole sealing of housing respectively, and another oil circuit hole of another oil circuit hole of side door and housing seals and interlinks and lead in cylinder barrel, its each parts are successively installed and have been connected according to program respectively, between each interface in its each oil circuit hole, all have rubber seal to connect, and it forms the oil circuit of independent completion sealing.The sealing of the sealing between each interface of hole, sealed packet oil scraper road of oil circuit and the oil circuit hole collar extension of port connection and housing, the left and right symmetry of the structure of hydraulic oil pipe binding clasp, two slips assemblies are located opposite from respectively in the left and right side through hole of housing, and two relative slips assembly forms one group of slips assembly, the be tightly connected hydraulic oil pipeline of hydraulic system of port connection, when the hydraulic control system hydraulic oil enters the left and right cylinder barrel and closes chamber, promotion piston driving left and right slips assembly moves to the well head center respectively along the side through hole of housing, realize clamping oil pipe, when hydraulic oil enters cylinder barrel unlatching chamber, left and right, promote piston driving left and right slips assembly to leaving the motion of well head center position, unclamp oil pipe, slips assembly switch is controlled by the reversal valve of the hydraulic control unit of hydraulic system, but one group of oil pipe installing in same a bite Oil/gas Well is is normally connected and composed by the oil pipe of various outer diameter specification, so at lower oil tube, while using the hydraulic oil pipe binding clasp to clamp oil pipe, needs that will be different according to the external diameter specification of oil pipe, use and the adapt slips assembly of the different internal diameter specification of mating of the external diameter specification of its oil pipe, the internal diameter specification of slips assembly refers to the internal diameter specification of inwall side face of the slip insert of slips assembly, and once the hydraulic oil pipe binding clasp has been assembled, one group of slips assembly of equipment in its hydraulic oil pipe binding clasp, the internal diameter specification of the slips assembly of its hydraulic oil pipe binding clasp is fixing can not the change just, remove like this oil gas field OIH pipe, its hydraulic oil pipe binding clasp will be changed repeatedly slip insert or slips assembly usually, variation with the external diameter specification of the oil pipe that adapts to required clamping, and change repeatedly slip insert or slips assembly process complexity, trouble, also can lose time, and repeatedly dismantle the sealing that hydraulic cylinder tends to damage oil circuit, damage the hydraulic oil pipe binding clasp, produce new potential safety hazard.

The utility model content

The purpose of this utility model is: a kind of swinging reducing oil pipe clamping device is provided, it has overcome the defect of one group of slips assembly of equipment in the hydraulic oil pipe binding clasp, the slips assembly of the many groups of swinging reducing oil pipe clamping device equipment different inner diameters specification or the pincers tooth assembly of the many groups of equipment different inner diameters specification, external diameter specification according to the oil pipe of required clamping, by the revolution rotating disk, the external diameter specification of the oil pipe of choice for use and required clamping adapt a group of coupling of the external diameter specification of oil pipe of one group of slips assembly of coupling or choice for use and required clamping that adapts clamps the tooth assembly, and make external diameter specification with the oil pipe of required clamping adapt coupling one group of slips assembly use in place or make the adapt one group of pincers tooth assembly use in place of coupling of external diameter specification with the oil pipe of required clamping, thereby adapt to the variation of the external diameter specification of required clamping oil pipe, save the working time like this, save and change the trouble that slip insert or slips assembly or pincers tooth assembly bring, greatly improved workman's labor productivity, stop to produce new potential safety hazard.

The purpose of this utility model is achieved in that swinging reducing oil pipe clamping device is the utensil of the clamping oil pipe that uses in the oil gas field shaft mouth operation, and it adopts hydraulic-driven.Swinging reducing oil pipe clamping device comprises shell, hydraulic cylinder, slips assembly or pincers tooth assembly, side door, side door bolt, rotating disk, transmission device, positioner and steel ball, port connection, spring catch, and swinging reducing oil pipe clamping device also comprises sealing mechanism.Swinging reducing oil pipe clamping device is the bilateral symmetry structure, and its left side structure is identical and symmetrical with the specification framework of right side structure.Spring catch comprises shell, spring, pin.Its shell comprises housing, the fastening structure of case lid and case lid and housing, Hermetical connecting structure, housing comprises body and flange arrangement, body is rectangular structure, the main through hole that the center of body is hollow circular configuration, the center line of main through hole and the center line of housing are on same straight line, inside chime rings shape structure on the internal perisporium of one end of main through hole, at the bottom of its annular that is body, the center line of the center hole at the bottom of the annular of body and the center line of housing are on same straight line, the plane that inner face at the bottom of the annular of body is cirque structure, the other end of main through hole is referred to as outer end, on all its bodies of side in outer end, the driving gear installing hole is arranged, driving gear installing hole on housing comprises counterbore and axis hole, side channel, counterbore is circular hole, the internal diameter of counterbore is greater than the internal diameter of axis hole, form a ledge structure between the internal perisporium of counterbore internal perisporium and axis hole, the center line of counterbore and axis hole is on same straight line, the main through hole of connection body and the side channel of axis hole are arranged on the perisporium of axis hole, the center line of body is respectively perpendicular to two relative groove sides of side channel, driving gear is installed and connected on housing by the driving gear installing hole of housing, driving gear comprises toothed disc and axle, the connection teeth wheel disc is installed in side channel, and there is the axle connecting through hole centre of toothed disc, and the axle connecting through hole is square hole, the axle of driving gear consists of four parts, be columniform head, interior hexagonal structure, the afterbody of cylindrical structural are arranged on the top of its head, the middle part of cube structure, be connected in the cylindrical structural that its external diameter between head and middle part is greater than the external diameter of head, axle sleeve advances in the axle connecting through hole of toothed disc, the afterbody of axle puts in the axis hole be inserted on housing, the middle part of axle is enclosed within the axle connecting through hole of centre of toothed disc, cover connected set circle on axle, lasso is circular ring structure, the cylindrical structural be connected between head and middle part of the axle of driving gear overlaps the connected set circle, lasso is inserted in the counterbore of driving gear installing hole of housing, lasso respectively and the cylindrical structural be connected between head and middle part of the axle of the counterbore of the driving gear installing hole of housing and driving gear be tightly connected, uniform a plurality of connection blind holes on its body of the outer circumferential side of the outer end of main through hole, be internal thread in its blind hole, and the center line of blind hole is parallel with the center line of housing, body has two side through hole, and two side through hole communicate with main through hole respectively, and a side through hole is positioned at main through hole one side, and another side through hole is positioned at main through hole opposite side, the center line of two side through hole on same straight line and with the vertical and intersectant centerline of main through hole, outside at the bottom of the annular of body is flange arrangement, and the center line of flange arrangement and the center line of main through hole are on same straight line, and the middle circular hole at the bottom of the intermediate throughholes of flange arrangement and the annular of body interlinks, and annular groove is arranged on the lateral surface of flange arrangement, the spring catch connecting through hole is arranged on housing, the spring catch connecting through hole is installed the linking springs pin, the spring catch connecting through hole is positioned at the perisporium of housing and penetrates the perisporium of housing, the center line of spring catch connecting through hole and the vertical and intersectant centerline of housing, spring catch is fixedly connected on housing by the spring catch connecting through hole of housing, spring catch is connected with housing seal, comprise two parts, the one, being tightly connected of the spring catch connecting through hole of the shell of spring catch and housing, the one, being tightly connected of the spring catch connecting through hole of the pin of spring catch and housing, the pin of spring catch stretches to the main through hole of housing, case lid comprises covers body, step, flange arrangement, side through hole, connecting through hole, the lid body is cirque structure, in the middle of the lid body, it is round tube hole, the step that one side of lid body is outwardly cirque structure, round tube hole in the middle of step interlinks with the round tube hole in the middle of the lid body, the opposite side of lid body is flange arrangement, the through hole of the centre of flange arrangement interlinks with the round tube hole of the centre of lid body, step and lid body, the center line of flange arrangement is on same straight line, annular groove is arranged on the lateral surface of flange arrangement, all sides of the round tube hole of the centre of lid body have a side through hole, the internal diameter of side through hole equals the external diameter of head of the axle of driving gear, all sides of the round tube hole of the centre of lid body are uniformly distributed a plurality of connecting through holes.Hydraulic cylinder comprises cylinder barrel and cylinder cap, piston and piston rod, screw mandrel, cylinder barrel bolt and sealing device, piston rod is fixedly connected on a side of piston, the blind hole that connection wire rod is arranged on piston rod, the blind hole of connection wire rod and the central through hole of piston interlink, the blind hole of connection wire rod and the central through hole of piston and piston rod, the center line of piston is on same straight line, in the blind hole of the central through hole of piston and the connection wire rod linked together, internal thread is arranged, screw mandrel comprises body and step, body is circular pin, the step of the outwardly annular of intermediate peripheral wall of body, its step separates leading portion and back segment to the body of screw mandrel, the external diameter of leading portion is less than the external diameter of back segment, on the leading portion of body, male thread is arranged, the top of the outer end of the side through hole that puts in housing of piston rod comprises pin thread and the pin connecting hole of head, pin thread comprises pin thread head and pin thread groove, the annular groove of the center line around piston that the pin thread groove is concaved out by the head perisporium of piston rod, the center line of pin thread head and pin thread groove and piston rod is on same straight line, the center line of its center line and piston is on same straight line, the pin connecting hole is arranged at the top of the outer end of the side through hole that puts in housing of piston rod, the center line of pin connecting hole and the vertical and intersectant centerline of piston rod, and the pin connecting hole is between pin thread and piston, and the pin thread groove is between pin thread head and pin connecting hole.The many group pincers of swinging reducing oil pipe clamping device equipment many groups slips assembly or equipment tooth assembly, when the many groups of swinging reducing oil pipe clamping device equipment slips assembly, the slips assembly of its equipment comprises slip spider, slip insert, the box hole that the pin thread that connects piston rod is arranged on slip spider, the box hole is the connecting hole of pin thread, it is circular hole, the center line in the box hole of its slip spider and the center line of slip spider are on same straight line, two spring pin holes are arranged on slip spider, two spring pin holes lay respectively at the both sides in box hole and communicate with the box hole respectively, the center line of two spring pin holes point-blank, the vertical and intersectant centerline in its center line and box hole, two locating holes are arranged on slip spider, two locating holes lay respectively at the both sides on plane at the center line place of the center line of slip spider and two spring pin holes, the center line of two locating holes is on same straight line, its center line is perpendicular to the plane at the center line place of the center line of slip spider and two spring pin holes, in two spring pin holes of slip spider, the linking springs pin is installed respectively, slip spider and slip insert interconnect, adopt direct fixed connection structure between slip spider and slip insert or adopt by the dog screw fixed connection structure of socket cap, when between slip spider and slip insert, adopting direct fixed connection structure, do not pass through other member between slip spider and slip insert, slip spider directly is fixedly connected with mutually with slip insert, and the slips assembly is as a whole, when between slip spider and slip insert, adopting the dog screw fixed connection structure that passes through socket cap, the slips assembly comprises the dog screw that also comprises socket cap, and there is external screw thread the rear end of the dog screw of socket cap, slip spider has interior arc-shaped structure, interior arc-shaped structure and box hole lay respectively at slip spider pedestal in, the outside, circular connecting hole is arranged on interior arc-shaped structure, the center line of the circular connecting hole of its slip spider and the center line of slip spider are on same straight line, the positioning screw hole that two socket caps are arranged on slip spider, the positioning screw hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectively, the center line of the positioning screw hole of two socket caps point-blank, the vertical and intersectant centerline of its center line and circular connecting hole, in the positioning screw hole of socket cap, internal thread is arranged, the center line of the positioning screw hole of two socket caps and the center line of slip spider and two spring pin holes is on same plane, slip insert is the circular arc sheet, in its slip insert has, outer two wall side faces, a wall is inner circle arc side face, be referred to as the inwall side face, another wall side face is cylindrical arc side face, be referred to as the outer wall side face, on its inwall side face, the locking teeth structure is arranged, outwardly circular coupling bar on the outer wall side face, locking teeth structure and circular coupling bar lay respectively at slip insert body in, the outside, the center line of circular coupling bar and the center line of slip insert are point-blank, there is annular fixed groove the outer end of circular coupling bar, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, the circular coupling bar of its slip insert injects in the circular connecting hole of its slip spider and matches like this, the outer wall side face of slip insert and the inwall side face of the interior arc-shaped structure of slip spider are mutually by connecting, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps on slip spider, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of two socket caps clamp and block circular coupling bar, thereby realize being locked circular coupling bar, the specification of slips assembly refers to the internal diameter specification of slips assembly, it is the internal diameter specification of inwall side face of the slip insert of slips assembly.When the many group pincers of swinging reducing oil pipe clamping device equipment tooth assembly, the pincers tooth assembly of its equipment comprises the dog screw of slide block and pincers tooth and socket cap, the pincers tooth is by pincers tooth body, tooth body and circular coupling bar form, pincers tooth body is rectangular block, the wall body of the thread form that the tooth body is interior circular arc by the extended inwall of pincers tooth body, the locking teeth structure is arranged on the inwall of tooth body, the outwardly rectangular block structured fixed block in middle part of one side of pincers tooth body, fixed block runs through the side be connected with fixed block of pincers tooth body, the fixed block of pincers tooth body connects circular coupling bar, tooth body and circular coupling bar lay respectively at pincers tooth body in, outer both sides, the center line of the center line of circular coupling bar and pincers tooth is on same straight line, there is annular fixed groove the outer end of circular coupling bar, slide block is rectangular block structure, one side of slide block middle part recessed rising as high as the banks arranged, the side at the recessed recessed place of rising as high as the banks of running through slide block of rising as high as the banks, the circular connecting hole that is connected and fixed the pincers tooth is arranged on slide block, the aperture of circular connecting hole is on recessed groove bottom of rising as high as the banks, the center line of circular connecting hole and the center line of slide block are on same straight line, distance between recessed two groove sides of rising as high as the banks is corresponding identical with the width of the fixed block of pincers tooth body, the recessed degree of depth of rising as high as the banks is corresponding identical with the thickness of the fixed block of pincers tooth body, the dog screw through hole that two socket caps are arranged on slide block, the dog screw through hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectively, the center line of the positioning screw hole of two socket caps point-blank, the vertical and intersectant centerline of its center line and circular connecting hole, in the positioning screw hole of socket cap, internal thread is arranged, the box hole that the pin thread that connects piston rod is arranged on slide block, the box hole is the connecting hole of pin thread, it is circular hole, the center line in the box hole of its slide block and the center line of slide block are on same straight line, two spring pin holes are arranged on slide block, two spring pin holes lay respectively at the both sides in box hole and communicate with the box hole respectively, the center line of two spring pin holes point-blank, the vertical and intersectant centerline in its center line and box hole, two locating holes are arranged on slide block, two locating holes lay respectively at the both sides on plane at the center line place of the center line of positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, the center line of two locating holes is on same straight line, its center line is perpendicular to the plane at the center line place of the center line of the positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, in two spring pin holes on slide block, the linking springs pin is installed respectively, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, circular coupling bar of its pincers tooth injects in the circular connecting hole of its slide block and matches like this, the fixed block of pincers tooth body sandwich slide block a side recessed the rising as high as the banks at middle part in match, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps of slide block, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of socket cap clamp and block circular coupling bar, thereby realize being locked circular coupling bar and pincers tooth, the specification of pincers tooth assembly refers to clamp the internal diameter specification of tooth assembly, clamp the internal diameter specification of inwall of interior circular arc of wall body of the extended thread form of pincers tooth body of tooth assembly.Like this, piston rod packs in the hole in the middle of side door, connect positioning sliding block on piston rod, the piston rod connecting through hole is arranged on positioning sliding block, its piston rod connecting through hole vertically penetrates the positioning sliding block body, the center line of piston rod connecting through hole and the center line of positioning sliding block are on same straight line, the dog screw through hole that two socket caps are arranged on positioning sliding block, the dog screw through hole of two socket cap lays respectively at the both sides of piston rod connecting through hole and communicates with the piston rod connecting through hole, in the dog screw through hole of socket cap, it is internal thread, the center line of the dog screw through hole of socket cap and the vertical and intersectant centerline of piston rod connecting through hole, install in the dog screw through hole of socket cap and connect dog screw, the front end of dog screw puts in the pin connecting hole of piston rod, the external screw thread of dog screw rear end screws and is connected with the dog screw through hole internal thread of socket cap, positioning sliding block is fixedly connected on piston rod, piston and piston rod are inserted in cylinder barrel, internal thread in the blind hole of the connection wire rod of the male thread on the leading portion of the body of screw mandrel and the central through hole of piston and the piston rod that links together screws and is connected, the cylinder cap sealing shroud connects the back segment of the body of screw mandrel, the sealing device of hydraulic cylinder comprises sealing and the sealing between cylinder cap and cylinder barrel and the sealing between side door and cylinder barrel between the back segment of body of cylinder cap and screw mandrel, sealing between piston rod and side door, sealing between piston rod and side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, for the sealing that makes this place very reliable, the sealing ring that multiplet is arranged, and the auxiliary seal of middle O-ring seals, side door itself is connected with housing by the side door bolt, side door is positioned at the side through hole outside of housing, cylinder cap and cylinder barrel are fixed together by cylinder barrel bolt and side door, and piston rod and positioning sliding block put in the side through hole of housing, and the sealing between side door and cylinder barrel adopts y-shaped ring to realize two way seal, the sealing mechanism of swinging reducing oil pipe clamping device comprises sealing device and the sealing of the sealing between side door and housing and oil circuit and the sealing of housing and case lid of hydraulic cylinder, two oil circuit holes are arranged in the body of housing, one oil circuit hole collar extension is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, the oil circuit hole collar extension of its housing is fixedly connected with port connection, its another oil circuit hole collar extension also is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, the oil circuit hole collar extension of its housing is fixedly connected with port connection, an oil circuit hole is arranged in the cylinder cap body, and from the cylinder cap inboard, all side that be connected corresponding to cylinder barrel pierces into the cylinder cap body in its oil circuit hole, and passes in the middle of the cylinder cap inboard, cylinder barrel has an oil circuit hole, the one oil circuit orifice sealing in all side oil circuit apertures in cylinder cap oil circuit hole and the oil circuit hole of cylinder barrel joins, oil circuit aperture in cylinder cap in the middle of the inboard in oil circuit hole is led in cylinder barrel, two oil circuit holes of crossing side door are arranged in its side door, the two oil circuit apertures in an oil circuit hole of side door are connected with another oil circuit aperture in the oil circuit hole of cylinder barrel and the oil circuit orifice sealing of housing respectively, and another oil circuit hole sealing of another oil circuit hole of side door and housing interlinks and leads in cylinder barrel.Its each parts are successively installed and have been connected according to program respectively, between each interface in oil circuit hole, all have rubber seal to connect, and it forms the oil circuit of independent completion sealing.Sealing and the oil circuit hole external tapping of port connection and housing and the sealing of housing between each interface of hole, sealed packet oil scraper road of oil circuit; The left and right symmetry of structure of swinging reducing oil pipe clamping device, connect respectively piston rod and positioning sliding block in the left and right side through hole of housing.Rotating disk is cirque structure, the central through hole of rotating disk is vertical circular hole, the center line of the central through hole of rotating disk and the center line of rotating disk are on same straight line, a plurality of side through hole are arranged on the body of the rotating disk in the outside of the central through hole of rotating disk, the body of rotating disk is the wall body of rotating disk, its side through hole is cross through hole, side through hole communicates with central through hole, side through hole is on the outer wall of rotating disk, it is the wall body of side through hole lateral penetration rotating disk, the center line of side through hole and the vertical and intersectant centerline of rotating disk, a plurality of side through hole are uniformly distributed on the wall body of rotating disk, be that the crossing angle of the center line of each two adjacent side through hole is identical, a plurality of side through hole on rotating disk are arranged in pairs, two relative side through hole form a pair of side through hole, the center line of its same two side through hole to side through hole is on same straight line, form the structure of multipair side through hole, the center line of a plurality of side through hole at grade, its side through hole connects respectively two relative spring pin holes, be connected in the center line of two the relative spring pin holes on the through hole of the same side on same straight line, the center line of two spring pin hole is parallel with the center line of rotating disk, and with the side through hole vertical and intersectant centerline that is connected two spring pin hole, two spring pin holes communicate with side through hole respectively, and the aperture of an one spring pin hole is positioned on a side of rotating disk, and the aperture of another spring pin hole is positioned on the another side of rotating disk, in two spring pin holes, the linking springs pin is installed respectively, a plurality of locating holes are arranged on the wall body of rotating disk, the aperture of locating hole be positioned at rotating disk the perisporium of wall body on, the center line of locating hole and the vertical and intersectant centerline of rotating disk, the center line of each locating hole on the wall body of rotating disk at grade, locating hole on rotating disk is corresponding with the side through hole on rotating disk, quantity is identical, a plurality of locating holes be uniformly distributed in rotating disk wall body on, be that the crossing angle of the center line of each two adjacent locating holes is identical, its crossing angle angle crossing with the center line of adjacent two side through hole is identical, a plurality of locating holes on rotating disk are arranged in pairs, two relative locating holes form a pair of locating hole, its center line with two locating holes of a pair of locating hole is on same straight line, form the structure of multipair locating hole, be machined into driven gear on the perisporium of the wall body of one side of the side through hole of rotating disk, this side is referred to as the outside of rotating disk, one side of the adjacent driven gear of rotating disk is referred to as the lateral surface of rotating disk, the another side of rotating disk is referred to as medial surface, the center line of driven gear and the center line of rotating disk are on same straight line, on inside and outside two sides of rotating disk, the annular groove around central through hole is arranged respectively, two annular groove specification is identical, the center line of two annular grooves is on same straight line, and the center line of its center line and rotating disk is on same straight line, side ring connected in star around central through hole is arranged on the perisporium of the wall body of the opposite side of the side through hole of rotating disk, the center line of its side ring connected in star and the center line of rotating disk are on same straight line, install respectively in each side through hole of rotating disk and connect slips assembly or pincers tooth assembly, be that slips assembly or pincers tooth assembly are installed and connected in the side through hole of rotating disk, slips assembly in the side through hole of rotating disk or pincers tooth assembly are arranged in pairs, two relative slips assemblies or two relative pincers tooth assemblies form a pair of slips assembly or a pair of pincers tooth assembly, it is one group of slips assembly or one group of pincers tooth assembly with a pair of slips assembly or with a pair of pincers tooth assembly, slips assembly or pincers tooth assembly are put in the side through hole of rotating disk, the outer wall of the pincers tooth slide block of the outer wall of the slip spider of its slips assembly or pincers tooth assembly coordinates the inwall of side through hole, the box hole of the slide block of the box hole of the slip spider of slips assembly or pincers tooth assembly is towards the rotating disk outside.Rotating disk is installed and connected in the main through hole of housing, in rotating disk, side ring connected in star on annular groove on outer two sides and the perisporium of rotating disk is installed respectively some steel balls, in the annular groove of its a part of spheroid of steel ball on medial surface that annular groove on the medial surface of rotating disk connects, tangent the leaning on of inner bottom surface at the bottom of the steel ball that annular groove on the medial surface of rotating disk connects and the annular of housing, in the annular groove of its a part of spheroid of steel ball on medial surface that the side ring connected in star of the perisporium of rotating disk connects, the steel ball that the side ring connected in star of the perisporium of rotating disk connects with the main through hole internal perisporium of housing mutually by company, in the annular groove of its a part of spheroid of steel ball on lateral surface that annular groove on the lateral surface of rotating disk connects, tangent the leaning on of annular medial surface of the steel ball that the annular groove on the lateral surface of rotating disk connects and the step of case lid, case lid is fixedly connected with housing, be fastenedly connected case lid and housing with bolt by the connecting through hole of case lid and the connection blind hole of housing, make rotating disk and housing location, be that the center line of the center line of rotating disk and housing is on same straight line, the center line of the side through hole of housing is on the plane at the place of the center line of a plurality of side through hole of rotating disk, slips assembly or pincers tooth assembly and piston rod location, be the center line in box hole of slip spider of each slips assembly or each pincers tooth assembly slide block the box hole center line at grade, the center line in the box hole of the slide block of the center line in the box hole of the slip spider of its slips assembly or pincers tooth assembly and the vertical and intersectant centerline of housing, the center line of piston rod is on the plane at the place of the center line in the box hole of the slide block of the center line in the box hole of the slip spider of each slips assembly or each pincers tooth assembly, fixedly the center line of the center line of slide block and piston rod is on same straight line, piston rod and slips assembly or pincers tooth assembly location also comprise, in the locating hole of the pin jacking rotating disk of the spring catch on housing, behind its rotating disk location, there are a pair of slips assembly or pincers tooth assembly to be positioned at two piston rod middles, a pair of slips assembly or pincers tooth assembly in place when this becomes the rotating disk location to slips assembly or pincers tooth assembly, the center line in the box hole of the slide block of the box hole of the slip spider of a pair of slips assembly that it is in place or a pair of pincers tooth assembly and the center line of two piston rods are on same straight line, the center line of two spring pin holes of its correspondence on the both sides rotating disk of the center line of two locating holes of slip spider or two locating holes of slide block and slips assembly or pincers tooth assembly and the center line of rotating disk are at grade, on the plane at the center line place of each locating hole of the center line of the spring catch on housing on the rotating disk perisporium.Transmission device comprises driving gear and driven gear; The tooth of driving gear put in the main through hole of housing and with mutual meshing connection of the tooth of driven gear on rotating disk, the center line of driving gear is parallel with the center line of housing, the head of the axle of driving gear exposes housing, the head of its axle pierces in the side through hole of case lid.Positioner comprises spring catch on housing and locating hole on corresponding rotating disk perisporium, be installed and connected in the locating hole of spring catch in the spring catch through hole on rotating disk and corresponding slip spider or slide block locating hole, be installed and connected in spring catch in the spring catch through hole on slip spider or the interior spring catch of the spring catch through hole on slide block and groove, the positioning sliding block on piston rod and the side through hole of rotating disk of piston rod pin thread; The specification of the pincers tooth assembly that its slips assembly specification of same group is identical or same group is identical, the specification of the pincers tooth assembly of not identical or different group of slips assembly specification on the same group is not identical, it respectively organizes the slips assembly or pincers tooth assembly arranges respectively the specification that the corresponding oil pipe with different size adapts and mates, like this, each is organized the slips assembly or respectively organizes pincers tooth assembly and mates separately the oil pipe that it adapts to specification.The latch through hole is arranged on the shell of the spring catch on its housing, the center line of its latch through hole is vertical with the center line of shell, the pin of the spring catch on housing has the latch connecting hole, the center line of its latch connecting hole is vertical with the center line of the pin of spring catch, be equipped with latch, when the pin of spring catch by the spring pressure stretch and while putting in the locating hole of rotating disk fully, latch is injected in the latch connecting hole of pin of latch through hole on the shell of spring catch and spring catch, make between the pin of the shell of its spring catch and spring catch fixing.The head of the axle of driving gear protrudes from outside case lid, install on case lid and connect dial, it is placed in the head of the axle of driving gear, be carved with the numeral of the plurality of specifications of slips assembly that swinging reducing oil pipe clamping device equips or pincers tooth assembly on dial, the head of its axle is installed and is connected pointer, by pointer and dial, to show one group of slips assembly that whether slips assembly or pincers tooth assembly be in place and in place or the specification of pincers tooth assembly.The be tightly connected hydraulic oil pipeline of hydraulic system of port connection.In the whole course of work of swinging reducing oil pipe clamping device, swinging reducing oil pipe clamping device has four positioning states, it is the location of rotating disk, the secondary location of the positioning sliding block of piston rod, being located by connecting of piston rod and slips assembly or pincers tooth assembly, the location of rotating disk and slips assembly or pincers tooth assembly, in the whole impulse stroke of piston, at first in piston moves ahead process, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, thereby realize locating for the second time under slips assembly or pincers tooth assembly are in working order, simultaneously piston rod head puts in the box hole of slip spider of slips assembly or clamps in the box hole of slide block of tooth assembly, the pin clinching of the spring catch on the slip spider of slips assembly enter in the annular groove of piston rod head or the slide block of pincers tooth assembly the pin clinching of spring catch enter in the annular groove of piston rod head, realize being located by connecting of piston rod and slips assembly or pincers tooth assembly, in the piston retraction process, the pin clinching of the spring catch of rotating disk enters in the locating hole on the slip spider of slips assembly or the pin clinching of the spring catch of rotating disk enters to clamp in the locating hole of slide block of tooth assembly, realize the location of rotating disk and slips assembly or pincers tooth assembly, simultaneously, piston rod separates with slips assembly or pincers tooth assembly, and piston rod head is retracted in the side through hole of housing together with positioning sliding block.Duty when the course of work of swinging reducing oil pipe clamping device comprises dial rotation, duty when swinging reducing oil pipe clamping device loosens, duty when swinging reducing oil pipe clamping device clamps, during duty when dial rotation or when swinging reducing oil pipe clamping device loosens, its piston rod head is retracted in the side through hole of housing together with positioning sliding block, piston rod separates with rotating disk, the pin of each spring catch on the rotating disk pin that corresponding clinching enters in the locating hole on the slip spider of slips assembly or each spring catch on rotating disk is pressed respectively corresponding clinching respectively enters to clamp in the locating hole of slide block of tooth assembly, each slips assembly or each pincers tooth assembly are positioned respectively in each corresponding side through hole of rotating disk, during duty when swinging reducing oil pipe clamping device clamps, the pin of the spring catch on its housing is also put in a locating hole of rotating disk fully by the spring pressure stretch, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, it puts in the side through hole of rotating disk, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, simultaneously piston rod head put in the box hole of slip spider of one group of slips assembly in place or the box hole of one group of slide block that clamps the tooth assembly in place in, the pin clinching of the spring catch on the slip spider of its slips assembly enter in the annular groove of piston rod head or the slide block of pincers tooth assembly the pin clinching of spring catch enter in the annular groove of piston rod head, and other slips assembly or pincers tooth assembly are positioned respectively in each corresponding side through hole of rotating disk.Swinging reducing oil pipe clamping device adopts hydraulic-driven, when the hydraulic control system hydraulic oil enters the left and right cylinder barrel and closes chamber, promoting piston driving one group of left and right slips assembly or one group of pincers tooth assembly in place in place moves to the well head center respectively along the case side through hole, realize clamping oil pipe, when hydraulic oil enters cylinder barrel unlatching chamber, left and right, promote piston driving one group of left and right slips assembly in place or clamp the tooth assembly to leaving the motion of well head center position, unclamp oil pipe, the switch of slips assembly or pincers tooth assembly is controlled by the reversal valve of hydraulic system.Swinging reducing oil pipe clamping device is equipped with handgrip, one end of handgrip has the outer-hexagonal structure, the interior hexagonal structure of the head of the specification of the outer-hexagonal structure of its handgrip and the axle of driving gear is complementary, thereby matches when the outer-hexagonal structure of handgrip is inserted in the interior hexagonal structure of head of axle of driving gear, like this, swinging reducing oil pipe clamping device is installed in the apparatus for work of oil and gas wellhead lower oil tube, when the external diameter of the oil pipe removed changes, use the handle rotation driving gear, make dial rotation, change one group of slips assembly or one group of pincers tooth assembly in place, the external diameter specification of the oil pipe of choice for use and required clamping adapt a group of coupling of the external diameter specification of oil pipe of one group of slips assembly of coupling or choice for use and required clamping that adapts clamps the tooth assembly, and make external diameter specification with the oil pipe of required clamping adapt coupling one group of slips assembly use in place or make the adapt one group of pincers tooth assembly use in place of coupling of external diameter specification with the oil pipe of required clamping, thereby adapt to external diameter the oil pipe changed has occurred, thereby reach the purpose of this utility model.

Owing to having adopted technique scheme, not only it has overcome the defect of one group of slips assembly of equipment in the hydraulic oil pipe binding clasp to swinging reducing oil pipe clamping device, the slips assembly of the many groups of swinging reducing oil pipe clamping device equipment different inner diameters specification or the pincers tooth assembly of the many groups of equipment different inner diameters specification, external diameter specification according to the oil pipe of required clamping, by the revolution rotating disk, the external diameter specification of the oil pipe of choice for use and required clamping adapt a group of coupling of the external diameter specification of oil pipe of one group of slips assembly of coupling or choice for use and required clamping that adapts clamps the tooth assembly, and make external diameter specification with the oil pipe of required clamping adapt coupling one group of slips assembly use in place or make the adapt one group of pincers tooth assembly use in place of coupling of external diameter specification with the oil pipe of required clamping, thereby adapt to the variation of the external diameter specification of required clamping oil pipe, save the working time, save and change the trouble that slip insert or slips assembly or pincers tooth assembly bring, greatly improved workman's labor productivity, stop to produce new potential safety hazard, and simple in structure, easy to operate.

The accompanying drawing explanation

Below in conjunction with embodiment, the utility model swinging reducing oil pipe clamping device is further described.

The example structure schematic diagram that accompanying drawing 1 is the utility model swinging reducing oil pipe clamping device.

The example structure explosion views that accompanying drawing 2 is the utility model swinging reducing oil pipe clamping device.

Figure: .. 1 screw head 2 piston 3 cylinder 4 5 6 Side slide positioning hole of the piston rod 7 connected to pin 8 of the male buckle housing recess 9 of the piston rod 10 sliding.. block 11. ball 12. center hole circular shell, the body of the bottom 13. outer annular flange structure of the housing body 14 of the bottom side of the spring and communicating through holes on the turntable. spring pin mount connector pin hole 15. housing cover 16. jaw body 17 of the housing cover flange structure 18. tooth jaws 19. rings. shaft drive gear 20 cylindrical head 21. cube structure central axis of the pinion gear 22. pinion gear wheel 23. cylindrical structure of the rear pinion gear shaft 24. cylinder bolt 25. side door bolts 26. spring mounted on the slide pin hole spring connection pin 27. outer peripheral side of the outer end of the main through-hole of the housing connecting threaded blind hole on the body of the 28. side through holes on the turntable 29. positioning holes on the turntable 30. the side through-hole communicating the turntable the spring pin hole 31. jaw assembly 32. spring pin connector housing mounting through holes 33 connected to the spring pin. indicating needle 34. tubing 35. connected to the connecting rod pin screw hole 36. dial

The specific embodiment

In figure: swinging reducing oil pipe clamping device is the utensil of the clamping oil pipe that uses in the oil gas field shaft mouth operation, and it adopts hydraulic-driven.Swinging reducing oil pipe clamping device comprises shell, hydraulic cylinder, slips assembly or pincers tooth assembly, side door, side door bolt, rotating disk, transmission device, positioner and steel ball, port connection, and swinging reducing oil pipe clamping device also comprises sealing mechanism.Swinging reducing oil pipe clamping device is the bilateral symmetry structure, and its left side structure is identical and symmetrical with the specification framework of right side structure.Its shell comprises housing (8), the fastening structure of case lid (15) and case lid and housing, Hermetical connecting structure, housing comprises body and flange arrangement, body is rectangular structure, the main through hole that the center of body is hollow circular configuration, the center line of main through hole and the center line of housing are on same straight line, inside chime rings shape structure on the internal perisporium of one end of main through hole, at the bottom of its annular that is body, the center line of the center hole at the bottom of the annular of body (12) and the center line of housing are on same straight line, the plane that inner face at the bottom of the annular of body is cirque structure, the other end of main through hole is referred to as outer end, on all its bodies of side in outer end, the driving gear installing hole is arranged, driving gear installing hole on housing comprises counterbore and axis hole, side channel, counterbore is circular hole, the internal diameter of counterbore is greater than the internal diameter of axis hole, form a ledge structure between the internal perisporium of counterbore internal perisporium and axis hole, the center line of counterbore and axis hole is on same straight line, the main through hole of connection body and the side channel of axis hole are arranged on the perisporium of axis hole, the center line of body is respectively perpendicular to two relative groove sides of side channel, driving gear is installed and connected on housing by the driving gear installing hole of housing, driving gear comprises toothed disc (22) and axle, the connection teeth wheel disc is installed in side channel, there is the axle connecting through hole centre of toothed disc, the axle connecting through hole is square hole, the axle of driving gear consists of four parts, be columniform head (20), interior hexagonal structure is arranged on the top of its head, the afterbody of cylindrical structural (23), the middle part of cube structure (21), be connected in the cylindrical structural that its external diameter between head and middle part is greater than the external diameter of head, axle sleeve advances in the axle connecting through hole of toothed disc, the afterbody of axle puts in the axis hole be inserted on housing, the middle part of axle is enclosed within the axle connecting through hole of centre of toothed disc, cover connected set circle (19) on axle, lasso is circular ring structure, the cylindrical structural be connected between head and middle part of the axle of driving gear overlaps the connected set circle, lasso is inserted in the counterbore of driving gear installing hole of housing, lasso respectively and the cylindrical structural be connected between head and middle part of the axle of the counterbore of the driving gear installing hole of housing and driving gear be tightly connected, uniform a plurality of connection blind holes (27) on its body of the outer circumferential side of the outer end of main through hole, be internal thread in its blind hole, and the center line of blind hole is parallel with the center line of housing, body has two side through hole, and two side through hole communicate with main through hole respectively, and a side through hole is positioned at main through hole one side, and another side through hole is positioned at main through hole opposite side, the center line of two side through hole on same straight line and with the vertical and intersectant centerline of main through hole, outside at the bottom of the annular of body is flange arrangement (13), the center line of flange arrangement and the center line of main through hole are on same straight line, middle circular hole at the bottom of the intermediate throughholes of flange arrangement and the annular of body interlinks, and annular groove is arranged on the lateral surface of flange arrangement, the spring catch connecting through hole is arranged on housing, the spring catch connecting through hole is installed linking springs pin (32), the spring catch connecting through hole is positioned at the perisporium of housing and penetrates the perisporium of housing, the center line of spring catch connecting through hole and the vertical and intersectant centerline of housing, spring catch is fixedly connected on housing by the spring catch connecting through hole of housing, spring catch is connected with housing seal, comprise two parts, the one, being tightly connected of the spring catch connecting through hole of the shell of spring catch and housing, the one, being tightly connected of the spring catch connecting through hole of the pin of spring catch and housing, the pin of spring catch stretches in the main through hole of housing, case lid (15) comprises covers body, step, flange arrangement, side through hole, connecting through hole, the lid body is cirque structure, in the middle of the lid body, it is round tube hole, the step that one side of lid body is outwardly cirque structure, round tube hole in the middle of step interlinks with the round tube hole in the middle of the lid body, the opposite side of lid body is flange arrangement (17), the through hole of the centre of flange arrangement interlinks with the round tube hole of the centre of lid body, step and lid body, the center line of flange arrangement is on same straight line, annular groove is arranged on the lateral surface of flange arrangement, all sides of the round tube hole of the centre of lid body have a side through hole, the internal diameter of side through hole equals the external diameter of head of the axle of driving gear, all sides of the round tube hole of the centre of lid body are uniformly distributed a plurality of connecting through holes.Hydraulic cylinder comprises cylinder barrel (3) and cylinder cap (1), piston (4) and piston rod, screw mandrel (2), cylinder barrel bolt (24) and sealing device, piston rod is fixedly connected on a side of piston, the blind hole that connection wire rod is arranged on piston rod, the blind hole of connection wire rod and the central through hole of piston interlink, the blind hole of connection wire rod and the central through hole of piston and piston rod, the center line of piston is on same straight line, in the blind hole of the central through hole of piston and the connection wire rod linked together, internal thread is arranged, screw mandrel comprises body and step, body is circular pin, the step of the outwardly annular of intermediate peripheral wall of body, its step separates leading portion and back segment to the body of screw mandrel, the external diameter of leading portion is less than the external diameter of back segment, on the leading portion of body, male thread is arranged, the top of the outer end of piston rod comprises pin thread and the pin connecting hole (7) of head, pin thread comprises pin thread head and pin thread groove (9), the annular groove of the center line around piston that the pin thread groove is concaved out by the head perisporium of piston rod, the center line of pin thread head and pin thread groove and piston rod is on same straight line, the center line of its center line and piston is on same straight line, the pin connecting hole is arranged at the top of the outer end of the side through hole that puts in housing of piston rod, the center line of pin connecting hole and the vertical and intersectant centerline of piston rod, and the pin connecting hole is between pin thread and piston, and the pin thread groove is between pin thread head and pin connecting hole.Swinging reducing oil pipe clamping device is equipped three groups of pincers tooth assemblies, pincers tooth assemblies (31) comprise the dog screw of slide block (10) and pincers tooth and socket cap, the pincers tooth is by pincers tooth body (16), tooth body (18) and circular coupling bar form, pincers tooth body is rectangular block, the wall body of the thread form that the tooth body is interior circular arc by the extended inwall of pincers tooth body, the locking teeth structure is arranged on the inwall of tooth body, the outwardly rectangular block structured fixed block in middle part of one side of pincers tooth body, fixed block runs through the side be connected with fixed block of pincers tooth body, the fixed block of pincers tooth body connects circular coupling bar, tooth body and circular coupling bar lay respectively at pincers tooth body in, outer both sides, the center line of the center line of circular coupling bar and pincers tooth is on same straight line, there is annular fixed groove the outer end of circular coupling bar, slide block is rectangular block structure, one side of slide block middle part recessed rising as high as the banks arranged, the side at the recessed recessed place of rising as high as the banks of running through slide block of rising as high as the banks, the circular connecting hole that is connected and fixed the pincers tooth is arranged on slide block, the aperture of circular connecting hole is on recessed groove bottom of rising as high as the banks, the center line of circular connecting hole and the center line of slide block are on same straight line, distance between recessed two groove sides of rising as high as the banks is corresponding identical with the width of the fixed block of pincers tooth body, the recessed degree of depth of rising as high as the banks is corresponding identical with the thickness of the fixed block of pincers tooth body, the dog screw through hole that two socket caps are arranged on slide block, the dog screw through hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectively, the center line of the positioning screw hole of two socket caps point-blank, the vertical and intersectant centerline of its center line and circular connecting hole, in the positioning screw hole of socket cap, internal thread is arranged, the box hole that the pin thread that connects piston rod is arranged on slide block, the box hole is the connecting hole of pin thread, it is circular hole, the center line in the box hole of its slide block and the center line of slide block are on same straight line, two spring pin holes are arranged on slide block, two spring pin holes lay respectively at the both sides in box hole and communicate with the box hole respectively, the center line of two spring pin holes point-blank, the vertical and intersectant centerline in its center line and box hole, two locating holes are arranged on slide block, two locating holes lay respectively at the both sides on plane at the center line place of the center line of positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, the center line of two locating holes is on same straight line, its center line is perpendicular to the plane at the center line place of the center line of the positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, linking springs pin (26) is installed respectively in two spring pin holes on slide block, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, circular coupling bar of its pincers tooth injects in the circular connecting hole of its slide block and matches like this, the fixed block of pincers tooth body sandwich slide block a side recessed the rising as high as the banks at middle part in match, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps of slide block, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of socket cap clamp and block circular coupling bar, thereby realize being locked circular coupling bar, the specification of pincers tooth assembly refers to clamp the internal diameter specification of tooth assembly, clamp the internal diameter specification of inwall of interior circular arc of wall body of the extended thread form of pincers tooth body of tooth assembly.Like this, piston rod is put in the hole in the middle of side door (5), connect positioning sliding block (6) on piston rod, the piston rod connecting through hole is arranged on positioning sliding block, its piston rod connecting through hole vertically penetrates the positioning sliding block body, the center line of piston rod connecting through hole and the center line of positioning sliding block are on same straight line, the dog screw through hole that two socket caps are arranged on positioning sliding block, the dog screw through hole of two socket cap lays respectively at the both sides of piston rod connecting through hole and communicates with the piston rod connecting hole, in the dog screw through hole of socket cap, it is internal thread, the center line of the dog screw through hole of socket cap and the vertical and intersectant centerline of piston rod connecting through hole, install in the dog screw through hole of socket cap and connect dog screw (35), the front end of dog screw puts in the pin connecting hole of piston rod, the external screw thread of dog screw rear end screws and is connected with the dog screw through hole internal thread of socket cap, positioning sliding block is fixedly connected on piston rod, piston and piston rod are inserted in cylinder barrel, internal thread in the blind hole of the connection wire rod of the male thread on the leading portion of the body of screw mandrel and the central through hole of piston and the piston rod that links together screws and is connected, the cylinder cap sealing shroud connects the back segment of the body of screw mandrel, the sealing device of hydraulic cylinder comprises sealing and the sealing between cylinder cap and cylinder barrel and the sealing between side door and cylinder barrel between the back segment of body of cylinder cap and screw mandrel, sealing between piston rod and side door, sealing between piston rod and side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, for the sealing that makes this place very reliable, the sealing ring that multiplet is arranged, and the auxiliary seal of middle O-ring seals, side door itself is connected with housing by side door bolt (25), side door is positioned at the side through hole outside of housing, cylinder cap and cylinder barrel are fixed together by cylinder barrel bolt and side door, piston rod and positioning sliding block put in the side through hole of housing, and the sealing between side door and cylinder barrel adopts y-shaped ring to realize two way seal, the sealing mechanism of swinging reducing oil pipe clamping device comprises sealing device and the sealing of the sealing between side door and housing and oil circuit and the sealing of housing and case lid of hydraulic cylinder, two oil circuit holes are arranged in the body of housing, one oil circuit hole collar extension of its housing is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, its oil circuit hole collar extension is fixedly connected with port connection, another oil circuit hole collar extension of its housing also is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, its oil circuit hole collar extension is fixedly connected with port connection, an oil circuit hole is arranged in the cylinder cap body, and from the cylinder cap inboard, all side that be connected corresponding to cylinder barrel pierces into the cylinder cap body in its oil circuit hole, and passes in the middle of the cylinder cap inboard, cylinder barrel has an oil circuit hole, the one oil circuit orifice sealing in all side oil circuit apertures in cylinder cap oil circuit hole and the oil circuit hole of cylinder barrel joins, oil circuit aperture in the middle of the inboard in cylinder cap oil circuit hole is led in cylinder barrel, its side door has two oil circuit holes of crossing side door, the two oil circuit apertures in an oil circuit hole of side door interlink with another oil circuit hole in the oil circuit hole of cylinder barrel and the oil circuit hole sealing of housing respectively, and another oil circuit hole of another oil circuit hole of side door and housing seals and interlinks and lead in cylinder barrel.Its each parts are successively installed and have been connected according to program respectively, between each interface in oil circuit hole, all have rubber seal to connect, and it forms the oil circuit of independent completion sealing.The sealing of the sealing between each interface of hole, sealed packet oil scraper road of oil circuit and the oil circuit hole collar extension of port connection and housing; The left and right symmetry of structure of swinging reducing oil pipe clamping device, connect respectively piston rod and positioning sliding block in the left and right side through hole of housing.Rotating disk (36) is cirque structure, the central through hole of rotating disk is vertical circular hole, the center line of the central through hole of rotating disk and the center line of rotating disk are on same straight line, six side through hole are arranged on the body of the rotating disk in the outside of the central through hole of rotating disk, the body of rotating disk is the wall body of rotating disk, its side through hole (28) is cross through hole, side through hole communicates with central through hole, side through hole is on the wall body of rotating disk, it is the wall body of side through hole lateral penetration rotating disk, the center line of side through hole and the vertical and intersectant centerline of rotating disk, six side through hole are uniformly distributed on the wall body of rotating disk, be that the crossing angle of the center line of each two adjacent side through hole is identical, six side through hole on rotating disk are arranged in pairs, two relative side through hole form a pair of side through hole, the center line of its same two side through hole to side through hole is on same straight line, form the structure of three pairs of side through hole, the center line of six side through hole at grade, its side through hole connects respectively two relative spring pin holes, be connected in the center line of two the relative spring pin holes on the through hole of the same side on same straight line, the center line of two spring pin hole is parallel with the center line of rotating disk, and the vertical and intersectant centerline with the side through hole that is connected two spring pin hole, two spring pin holes communicate with side through hole respectively, the aperture of an one spring pin hole (30) is positioned on a side of rotating disk, the aperture of another spring pin hole is positioned on the another side of rotating disk, and linking springs pin (14) is installed respectively in two spring pin holes, rotating disk wall body on six locating holes are arranged, the aperture of locating hole (29) be positioned at rotating disk the perisporium of wall body on, the center line of locating hole and the vertical and intersectant centerline of rotating disk, the center line of each locating hole on the perisporium of the wall body of rotating disk at grade, locating hole on rotating disk is corresponding with the side through hole on rotating disk, quantity is identical, six locating holes are uniformly distributed on the wall body of rotating disk, be that the crossing angle of the center line of each two adjacent locating holes is identical, its crossing angle angle crossing with the center line of adjacent two side through hole is identical, six locating holes on rotating disk are arranged in pairs, two relative locating holes form a pair of locating hole, its center line with two locating holes of a pair of locating hole is on same straight line, form the structure of three pairs of locating holes, be machined into driven gear on the perisporium of one sidewall bodies of the side through hole of rotating disk, this side is referred to as the outside of rotating disk, one side of the adjacent driven gear of rotating disk is referred to as the lateral surface of rotating disk, the another side of rotating disk is referred to as medial surface, the center line of driven gear and the center line of rotating disk are on same straight line, on inside and outside two sides of rotating disk, the annular groove around central through hole is arranged respectively, two annular groove specification is identical, the center line of two annular grooves is on same straight line, and the center line of its center line and rotating disk is on same straight line, side ring connected in star around central through hole is arranged on the perisporium of the wall body of the opposite side of the side through hole of rotating disk, the center line of its side ring connected in star and the center line of rotating disk are on same straight line, connecting clamp tooth assembly is installed respectively in each side through hole of rotating disk, clamping the tooth assembly is installed and connected in the side through hole of rotating disk, pincers tooth assembly is put in the side through hole of rotating disk, pincers tooth assembly in the side through hole of rotating disk is arranged in pairs, two relative pincers tooth assemblies form a pair of pincers tooth assembly, and it is one group of pincers tooth assembly with a pair of pincers tooth assembly, the outer wall of the pincers tooth slide block of its pincers tooth assembly coordinates the inwall of side through hole, and the box hole of the slide block of pincers tooth assembly is towards the rotating disk outside.Rotating disk is installed and connected in the main through hole of housing, in rotating disk, side ring connected in star on annular groove on outer two sides and the perisporium of rotating disk is installed respectively and is connected some steel balls, in the annular groove of its a part of spheroid of steel ball on medial surface that annular groove on the medial surface of rotating disk connects, tangent the leaning on of inner bottom surface at the bottom of the steel ball (11) that annular groove on the medial surface of rotating disk connects and the annular of housing, in the annular groove of its a part of spheroid of steel ball on medial surface that the side ring connected in star of the perisporium of rotating disk connects, the steel ball that the side ring connected in star of the perisporium of rotating disk connects with the main through hole internal perisporium of housing mutually by company, in the annular groove of its a part of spheroid of steel ball on lateral surface that annular groove on the lateral surface of rotating disk connects, tangent the leaning on of annular medial surface of the steel ball that the annular groove on the lateral surface of rotating disk connects and the step of case lid, case lid is fixedly connected with housing, be fastenedly connected case lid and housing with bolt by the connecting through hole of case lid and the connection blind hole of housing, make rotating disk and housing location, be that the center line of the center line of rotating disk and housing is on same straight line, the center line of the side through hole of housing is on the plane at the place of the center line of six side through hole of rotating disk, pincers tooth assembly and piston rod contraposition, be each pincers tooth assembly slide block the box hole center line at grade, the center line in the box hole of the slide block of its pincers tooth assembly and the vertical and intersectant centerline of housing, the center line of piston rod is on the plane at the place of the center line in the box hole of the slide block of each pincers tooth assembly, fixedly the center line of the center line of slide block and piston rod is on same straight line, piston rod also comprises with pincers tooth assembly location, in the locating hole of the pin jacking rotating disk of the spring catch on housing, behind its rotating disk location, there is a pair of pincers tooth assembly to be positioned at two piston rod middles, a pair of pincers tooth assembly in place when this becomes the rotating disk location to pincers tooth assembly, the center line in the box hole of the slide block of its a pair of pincers tooth assembly in place and the center line of two piston rods are on same straight line, the center line of two spring pin holes of its correspondence on the both sides rotating disk of the center line of two locating holes of slide block and pincers tooth assembly and the center line of rotating disk are at grade, on the plane at the center line place of each locating hole of the center line of the spring catch on housing on the rotating disk perisporium.Transmission device comprises driving gear and driven gear; The tooth of driving gear put in the main through hole of housing and with mutual meshing connection of the tooth of driven gear on rotating disk, the center line of driving gear is parallel with the center line of housing, the head of the axle of driving gear exposes housing, the head of its axle pierces in the side through hole of case lid.Positioner comprises spring catch on housing and corresponding locating hole on the rotating disk perisporium, be installed and connected in the locating hole of spring catch in spring catch through hole on rotating disk and corresponding slide block, be installed and connected in spring catch in spring catch through hole on slide block and the groove of piston rod pin thread, the side through hole of the positioning sliding block on piston rod and the side through hole of housing and rotating disk, the specification of its pincers tooth assembly of same group is identical, the specification of pincers tooth assembly on the same group is not identical, it is respectively organized pincers tooth assembly the specification that the corresponding oil pipe with different size adapts and mates is set respectively, like this, each group pincers tooth assembly mates the oil pipe that it adapts to specification separately, the latch through hole is arranged on the shell of the spring catch on its housing, the center line of its latch through hole is vertical with the center line of shell, the pin of the spring catch on housing has the latch connecting hole, the center line of its latch connecting hole is vertical with the center line of the pin of spring catch, be equipped with latch, when the pin of spring catch by the spring pressure stretch and while putting in the locating hole of rotating disk fully, latch is injected in the latch connecting hole of pin of latch through hole on the shell of spring catch and spring catch, make between the pin of the shell of its spring catch and spring catch fixing.The head of the axle of driving gear protrudes from outside case lid, install on case lid and connect dial, it is placed in the head of the axle of driving gear, be carved with the numeral of three kinds of specifications of the pincers tooth assembly that swinging reducing oil pipe clamping device equips on dial, the head of its axle is installed and is connected pointer (33), by pointer and dial, to show the specification of the one group of pincers tooth assembly whether pincers tooth assembly is in place and in place.The be tightly connected hydraulic oil pipeline of hydraulic system of port connection.In the whole course of work of swinging reducing oil pipe clamping device, swinging reducing oil pipe clamping device has four positioning states, it is the location of rotating disk, the slips assembly of the positioning sliding block of piston rod or pincers tooth assembly in working order under location for the second time, piston rod is located by connecting with pincers tooth assembly, rotating disk and the location of clamping the tooth assembly, in the whole impulse stroke of piston, at first in piston moves ahead process, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, thereby realize the secondary location, piston rod head puts in the box hole of the slide block that clamps the tooth assembly simultaneously, the pin clinching of the spring catch of the slide block of pincers tooth assembly enters in the annular groove of piston rod head, realize piston rod and clamp being located by connecting of tooth assembly, in the piston retraction process, the pin clinching of the spring catch of rotating disk enters to clamp in the locating hole of slide block of tooth assembly, realizes the location of rotating disk and pincers tooth assembly, and simultaneously, piston rod separates with pincers tooth assembly, and piston rod head is retracted in the side through hole of housing together with positioning sliding block.In the course of work of swinging reducing oil pipe clamping device, duty while comprising dial rotation, duty when swinging reducing oil pipe clamping device loosens, duty when swinging reducing oil pipe clamping device clamps, during duty when dial rotation or when swinging reducing oil pipe clamping device loosens, its piston rod head is retracted in the side through hole of housing together with positioning sliding block, piston rod separates with rotating disk, the pin of each spring catch of rotating disk clinching respectively enters to clamp in the locating hole of slide block of tooth assembly, each pincers tooth assembly is positioned respectively in each corresponding side through hole of rotating disk, when the duty of swinging reducing oil pipe clamping device clamping, the pin of the spring catch on its housing is also put in a locating hole of rotating disk fully by the spring pressure stretch, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, it puts in the side through hole of rotating disk, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, simultaneously piston rod head puts in the box hole of slide block of one group of pincers tooth assembly in place, the pin clinching of the spring catch of the slide block of pincers tooth assembly enters in the annular groove of piston rod head, and other each pincers tooth assembly is positioned respectively in each corresponding side through hole of rotating disk.Swinging reducing oil pipe clamping device adopts hydraulic-driven, when the hydraulic control system hydraulic oil enters the left and right cylinder barrel and closes chamber, promoting piston driving about one group pincers tooth assembly in place moves to the well head center respectively along the case side through hole, realize clamping oil pipe (34), when hydraulic oil enters cylinder barrel unlatching chamber, left and right, promote piston driving about one group pincers tooth assembly in place to leaving the motion of well head center position, unclamp oil pipe, the switch of pincers tooth assembly is controlled by the reversal valve of hydraulic system.Swinging reducing oil pipe clamping device is equipped with handgrip, one end of handgrip has the outer-hexagonal structure, the interior hexagonal structure of the head of the specification of the outer-hexagonal structure of its handgrip and the axle of driving gear is complementary, thereby matches when the outer-hexagonal structure of handgrip is inserted in the interior hexagonal structure of head of axle of driving gear; Swinging reducing oil pipe clamping device is installed in the apparatus for work of oil and gas wellhead lower oil tube, when the external diameter of the oil pipe removed changes, use the handle rotation driving gear, make dial rotation, change one group of pincers tooth assembly in place, the external diameter specification of the oil pipe of choice for use and the required clamping one group of pincers tooth assembly of coupling that adapts, and make the adapt one group of pincers tooth assembly use in place of coupling of external diameter specification with the oil pipe of required clamping, make it adapt to external diameter the oil pipe changed has occurred.

Claims (2)

1. a swinging reducing oil pipe clamping device, swinging reducing oil pipe clamping device is the utensil of the clamping oil pipe that uses in the oil gas field shaft mouth operation, it adopts hydraulic-driven, swinging reducing oil pipe clamping device comprises shell, hydraulic cylinder, slips assembly or pincers tooth assembly, side door, side door bolt, rotating disk, transmission device, positioner and steel ball, port connection, spring catch, and it also comprises sealing mechanism, swinging reducing oil pipe clamping device is the left-right symmetry structure, and its left side structure is identical and symmetrical with the specification framework of right side structure, spring catch comprises shell, spring, pin, its shell comprises fastening structure, the Hermetical connecting structure of housing, case lid and case lid and housing, housing comprises body and flange arrangement, body is rectangular structure, the main through hole that the center of body is hollow circular configuration, the center line of main through hole and the center line of housing, on same straight line, have the driving gear installing hole on its body, driving gear is installed and connected on housing by the driving gear installing hole of housing, driving gear comprises toothed disc and axle, the connection teeth wheel disc is installed in side channel, and there is the axle connecting through hole centre of toothed disc, and the axle connecting through hole is square hole, the axle of driving gear consists of four parts, be columniform head, interior hexagonal structure, the afterbody of cylindrical structural are arranged on the top of its head, the middle part of cube structure, be connected in the cylindrical structural that its external diameter between head and middle part is greater than the external diameter of head, axle sleeve advances in the axle connecting through hole of toothed disc, the afterbody of axle puts in the axis hole be inserted on housing, the middle part of axle is enclosed within the axle connecting through hole of centre of toothed disc, cover connected set circle on axle, lasso is circular ring structure, the cylindrical structural be connected between head and middle part of the axle of driving gear overlaps the connected set circle, lasso is inserted in the counterbore of driving gear installing hole of housing, lasso respectively and the cylindrical structural be connected between head and middle part of the axle of the counterbore of the driving gear installing hole of housing and driving gear be tightly connected, body has two side through hole, and two side through hole communicate with main through hole respectively, and a side through hole is positioned at main through hole one side, and another side through hole is positioned at main through hole opposite side, the center line of two side through hole on same straight line and with the vertical and intersectant centerline of main through hole, outside at the bottom of the annular of body is flange arrangement, and the center line of flange arrangement and the center line of main through hole are on same straight line, and the middle circular hole at the bottom of the intermediate throughholes of flange arrangement and the annular of body interlinks, and annular groove is arranged on the lateral surface of flange arrangement, the spring catch connecting through hole is arranged on housing, the spring catch connecting through hole is installed the linking springs pin, the spring catch connecting through hole is positioned at the perisporium of housing and penetrates the perisporium of housing, the center line of spring catch connecting through hole and the vertical and intersectant centerline of housing, spring catch is fixedly connected on housing by the spring catch connecting through hole of housing, spring catch is connected with housing seal, comprise two parts, the one, being tightly connected of the spring catch connecting through hole of the shell of spring catch and housing, the one, being tightly connected of the spring catch connecting through hole of the pin of spring catch and housing, the pin of spring catch stretches to the main through hole of housing, hydraulic cylinder comprises cylinder barrel and cylinder cap, piston and piston rod, screw mandrel, cylinder barrel bolt and sealing device, and piston rod is fixedly connected on a side of piston, and the blind hole of connection wire rod is arranged on piston rod,The blind hole of connection wire rod and the central through hole of piston interlink, the blind hole of connection wire rod and the central through hole of piston and piston rod, the center line of piston is on same straight line, in the blind hole of the central through hole of piston and the connection wire rod linked together, internal thread is arranged, screw mandrel comprises body and step, body is circular pin, the step of the outwardly annular of intermediate peripheral wall of body, its step separates leading portion and back segment to the body of screw mandrel, the external diameter of leading portion is less than the external diameter of back segment, on the leading portion of body, male thread is arranged, the top of the outer end of the side through hole that puts in housing of piston rod comprises pin thread and the pin connecting hole of head, pin thread comprises pin thread head and pin thread groove, the annular groove of the center line around piston that the pin thread groove is concaved out by the head perisporium of piston rod, the center line of pin thread head and pin thread groove and piston rod is on same straight line, the center line of its center line and piston is on same straight line, the pin connecting hole is arranged at the top of the outer end of the side through hole that puts in housing of piston rod, the center line of pin connecting hole and the vertical and intersectant centerline of piston rod, and the pin connecting hole is between pin thread and piston, and the pin thread groove is between pin thread head and pin connecting hole, the many group pincers of swinging reducing oil pipe clamping device equipment many groups slips assembly or equipment tooth assembly, when the many groups of swinging reducing oil pipe clamping device equipment slips assembly, the slips assembly of its equipment comprises slip spider, slip insert, the box hole that the pin thread that connects piston rod is arranged on slip spider, the box hole is the connecting hole of pin thread, it is circular hole, the center line in the box hole of its slip spider and the center line of slip spider are on same straight line, two spring pin holes are arranged on slip spider, two spring pin holes lay respectively at the both sides in box hole and communicate with the box hole respectively, the center line of two spring pin holes point-blank, the vertical and intersectant centerline in its center line and box hole, two locating holes are arranged on slip spider, two locating holes lay respectively at the both sides on plane at the center line place of the center line of slip spider and two spring pin holes, the center line of two locating holes is on same straight line, its center line is perpendicular to the plane at the center line place of the center line of slip spider and two spring pin holes, in two spring pin holes of slip spider, the linking springs pin is installed respectively, slip spider and slip insert interconnect, adopt direct fixed connection structure between slip spider and slip insert or adopt by the dog screw fixed connection structure of socket cap, when between slip spider and slip insert, adopting direct fixed connection structure, do not pass through other member between slip spider and slip insert, slip spider directly is fixedly connected with mutually with slip insert, and the slips assembly is as a whole, when between slip spider and slip insert, adopting the dog screw fixed connection structure that passes through socket cap, the slips assembly comprises the dog screw that also comprises socket cap, and there is external screw thread the rear end of the dog screw of socket cap, slip spider has interior arc-shaped structure, interior arc-shaped structure and box hole lay respectively at the medial and lateral of the pedestal of slip spider, circular connecting hole is arranged on interior arc-shaped structure, the center line of the circular connecting hole of its slip spider and the center line of slip spider are on same straight line, the positioning screw hole that two socket caps are arranged on slip spider, the positioning screw hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectivelyPoint-blank, the vertical and intersectant centerline of its center line and circular connecting hole, have internal thread in the positioning screw hole of socket cap to the center line of the positioning screw hole of two socket caps, the center line of the positioning screw hole of two socket caps and the center line of slip spider and two spring pin holes is on same plane, slip insert is the circular arc sheet, in its slip insert has, outer two wall side faces, a wall is inner circle arc side face, be referred to as the inwall side face, another wall side face is cylindrical arc side face, be referred to as the outer wall side face, on its inwall side face, the locking teeth structure is arranged, outwardly circular coupling bar on the outer wall side face, locking teeth structure and circular coupling bar lay respectively at slip insert body in, the outside, the center line of circular coupling bar and the center line of slip insert are point-blank, there is annular fixed groove the outer end of circular coupling bar, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, the circular coupling bar of its slip insert injects in the circular connecting hole of its slip spider and matches like this, the outer wall side face of slip insert and the inwall side face of the interior arc-shaped structure of slip spider are mutually by connecting, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps on slip spider, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of two socket caps clamp and block circular coupling bar, thereby realize being locked circular coupling bar, the specification of slips assembly refers to the internal diameter specification of slips assembly, it is the internal diameter specification of inwall side face of the slip insert of slips assembly, when the many group pincers of swinging reducing oil pipe clamping device equipment tooth assembly, the pincers tooth assembly of its equipment comprises the dog screw of slide block and pincers tooth and socket cap, the pincers tooth is by pincers tooth body, tooth body and circular coupling bar form, pincers tooth body is rectangular block, the wall body of the thread form that the tooth body is interior circular arc by the extended inwall of pincers tooth body, the locking teeth structure is arranged on the inwall of tooth body, the outwardly rectangular block structured fixed block in middle part of one side of pincers tooth body, fixed block runs through the side be connected with fixed block of pincers tooth body, the fixed block of pincers tooth body connects circular coupling bar, tooth body and circular coupling bar lay respectively at pincers tooth body in, outer both sides, the center line of the center line of circular coupling bar and pincers tooth is on same straight line, there is annular fixed groove the outer end of circular coupling bar, slide block is rectangular block structure, one side of slide block middle part recessed rising as high as the banks arranged, the side at the recessed recessed place of rising as high as the banks of running through slide block of rising as high as the banks, the circular connecting hole that is connected and fixed the pincers tooth is arranged on slide block, the aperture of circular connecting hole is on recessed groove bottom of rising as high as the banks, the center line of circular connecting hole and the center line of slide block are on same straight line, distance between recessed two groove sides of rising as high as the banks is corresponding identical with the width of the fixed block of pincers tooth body, the recessed degree of depth of rising as high as the banks is corresponding identical with the thickness of the fixed block of pincers tooth body, the dog screw through hole that two socket caps are arranged on slide block, the dog screw through hole of two socket caps lays respectively at the both sides of circular connecting hole and communicates with circular connecting hole respectively, the center line of the positioning screw hole of two socket caps point-blank,The vertical and intersectant centerline of its center line and circular connecting hole, have internal thread in the positioning screw hole of socket cap, the box hole that the pin thread that connects piston rod is arranged on slide block, the box hole is the connecting hole of pin thread, it is circular hole, the center line in the box hole of its slide block and the center line of slide block are on same straight line, two spring pin holes are arranged on slide block, two spring pin holes lay respectively at the both sides in box hole and communicate with the box hole respectively, the center line of two spring pin holes point-blank, the vertical and intersectant centerline in its center line and box hole, two locating holes are arranged on slide block, two locating holes lay respectively at the both sides on plane at the center line place of the center line of positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, the center line of two locating holes is on same straight line, its center line is perpendicular to the plane at the center line place of the center line of the positioning screw hole of the center line of circular connecting hole and two socket caps and two spring pin holes, in two spring pin holes on slide block, the linking springs pin is installed respectively, external diameter and the length of circular coupling bar are corresponding identical with internal diameter and the degree of depth of circular connecting hole, circular coupling bar of its pincers tooth injects in the circular connecting hole of its slide block and matches like this, the fixed block of pincers tooth body sandwich slide block a side recessed the rising as high as the banks at middle part in match, inject respectively the dog screw of socket cap in the positioning screw hole of two socket caps of slide block, make to screw and be connected between the internal thread of external screw thread and the positioning screw hole of socket cap of rear end of dog screw of socket cap, the front end of the dog screw of socket cap puts in the annular fixed groove of circular coupling bar and is connected with the annular fixed groove of circular coupling bar, make the dog screw of socket cap clamp and block circular coupling bar, thereby realize being locked circular coupling bar and pincers tooth, the specification of pincers tooth assembly refers to clamp the internal diameter specification of tooth assembly, clamp the internal diameter specification of inwall of interior circular arc of wall body of the extended thread form of pincers tooth body of tooth assembly, like this, piston rod packs in the hole in the middle of side door, connect positioning sliding block on piston rod, the piston rod connecting through hole is arranged on positioning sliding block, its piston rod connecting through hole vertically penetrates the positioning sliding block body, the center line of piston rod connecting through hole and the center line of positioning sliding block are on same straight line, the dog screw through hole that two socket caps are arranged on positioning sliding block, the dog screw through hole of two socket cap lays respectively at the both sides of piston rod connecting through hole and communicates with the piston rod connecting through hole, in the dog screw through hole of socket cap, it is internal thread, the center line of the dog screw through hole of socket cap and the vertical and intersectant centerline of piston rod connecting through hole, install in the dog screw through hole of socket cap and connect dog screw, the front end of dog screw puts in the pin connecting hole of piston rod, the external screw thread of dog screw rear end screws and is connected with the dog screw through hole internal thread of socket cap, positioning sliding block is fixedly connected on piston rod, piston and piston rod are inserted in cylinder barrel, internal thread in the blind hole of the connection wire rod of the male thread on the leading portion of the body of screw mandrel and the central through hole of piston and the piston rod that links together screws and is connected, the cylinder cap sealing shroud connects the back segment of the body of screw mandrel, the sealing device of hydraulic cylinder comprises sealing and the sealing between cylinder cap and cylinder barrel and the sealing between side door and cylinder barrel between the back segment of body of cylinder cap and screw mandrel,Sealing between piston rod and side door, sealing between piston rod and side door is divided into two parts, a part is that sealed well is pressed, a part is the oil pressure that the sealing hydraulic control produces, twice sealing mechanism is between this two department, very reliable for the sealing that makes this place, the sealing ring of multiplet and the auxiliary seal of middle O-ring seals are arranged, side door itself is connected with housing by the side door bolt, side door is positioned at the side through hole outside of housing, cylinder cap and cylinder barrel are fixed together by cylinder barrel bolt and side door, and piston rod and positioning sliding block put in the side through hole of housing, and the sealing between side door and cylinder barrel adopts y-shaped ring to realize two way seal, the sealing mechanism of swinging reducing oil pipe clamping device comprises sealing device and the sealing of the sealing between side door and housing and oil circuit and the sealing of housing and case lid of hydraulic cylinder, two oil circuit holes are arranged in the body of housing, one oil circuit hole collar extension is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, the oil circuit hole collar extension of its housing is fixedly connected with port connection, its another oil circuit hole collar extension also is positioned at the outside, housing front, internal orifice is two, it lays respectively at the outside of housing two side through hole, oil circuit hole two internal orifices respectively identical with the specification in the oil circuit aperture of its corresponding connected side door, link position is corresponding, the oil circuit hole collar extension of its housing is fixedly connected with port connection, an oil circuit hole is arranged in the cylinder cap body, and from the cylinder cap inboard, all side that be connected corresponding to cylinder barrel pierces into the cylinder cap body in its oil circuit hole, and passes in the middle of the cylinder cap inboard, cylinder barrel has an oil circuit hole, the one oil circuit orifice sealing in all side oil circuit apertures in cylinder cap oil circuit hole and the oil circuit hole of cylinder barrel joins, oil circuit aperture in cylinder cap in the middle of the inboard in oil circuit hole is led in cylinder barrel, two oil circuit holes of crossing side door are arranged in its side door, the two oil circuit apertures in an oil circuit hole of side door are connected with another oil circuit aperture in the oil circuit hole of cylinder barrel and the oil circuit orifice sealing of housing respectively, and another oil circuit hole sealing of another oil circuit hole of side door and housing interlinks and leads in cylinder barrel, its each parts are successively installed and have been connected according to program respectively, between each interface in oil circuit hole, all have rubber seal to connect, and it forms the oil circuit of independent completion sealing, sealing and the oil circuit hole external tapping of port connection and housing and the sealing of housing between each interface of hole, sealed packet oil scraper road of oil circuit, the left and right symmetry of structure of swinging reducing oil pipe clamping device, connect respectively piston rod and positioning sliding block in the left and right side through hole of housing, rotating disk is cirque structure, the central through hole of rotating disk is vertical circular hole, the center line of the central through hole of rotating disk and the center line of rotating disk are on same straight line, a plurality of side through hole are arranged on the body of the rotating disk in the outside of the central through hole of rotating disk, the body of rotating disk is the wall body of rotating disk, its side through hole is cross through hole, side through hole communicates with central through hole, side through hole is on the outer wall of rotating disk, it is the wall body of side through hole lateral penetration rotating disk, the center line of side through hole and the vertical and intersectant centerline of rotating disk, a plurality of side through hole are uniformly distributed on the wall body of rotating disk, be that the crossing angle of the center line of each two adjacent side through hole is identical, a plurality of side through hole on rotating disk are arranged in pairs, two relative side through hole form a pair of side through hole,The center line of its same two side through hole to side through hole is on same straight line, form the structure of multipair side through hole, the center line of a plurality of side through hole at grade, its side through hole connects respectively two relative spring pin holes, be connected in the center line of two the relative spring pin holes on the through hole of the same side on same straight line, the center line of two spring pin hole is parallel with the center line of rotating disk, and with the side through hole vertical and intersectant centerline that is connected two spring pin hole, two spring pin holes communicate with side through hole respectively, and the aperture of an one spring pin hole is positioned on a side of rotating disk, and the aperture of another spring pin hole is positioned on the another side of rotating disk, in two spring pin holes, the linking springs pin is installed respectively, a plurality of locating holes are arranged on the wall body of rotating disk, the aperture of locating hole be positioned at rotating disk the perisporium of wall body on, the center line of locating hole and the vertical and intersectant centerline of rotating disk, the center line of each locating hole on the wall body of rotating disk at grade, locating hole on rotating disk is corresponding with the side through hole on rotating disk, quantity is identical, a plurality of locating holes be uniformly distributed in rotating disk wall body on, be that the crossing angle of the center line of each two adjacent locating holes is identical, its crossing angle angle crossing with the center line of adjacent two side through hole is identical, a plurality of locating holes on rotating disk are arranged in pairs, two relative locating holes form a pair of locating hole, its center line with two locating holes of a pair of locating hole is on same straight line, form the structure of multipair locating hole, be machined into driven gear on the perisporium of the wall body of one side of the side through hole of rotating disk, this side is referred to as the outside of rotating disk, one side of the adjacent driven gear of rotating disk is referred to as the lateral surface of rotating disk, the another side of rotating disk is referred to as medial surface, the center line of driven gear and the center line of rotating disk are on same straight line, on inside and outside two sides of rotating disk, the annular groove around central through hole is arranged respectively, two annular groove specification is identical, the center line of two annular grooves is on same straight line, and the center line of its center line and rotating disk is on same straight line, side ring connected in star around central through hole is arranged on the perisporium of the wall body of the opposite side of the side through hole of rotating disk, the center line of its side ring connected in star and the center line of rotating disk are on same straight line, install respectively in each side through hole of rotating disk and connect slips assembly or pincers tooth assembly, be that slips assembly or pincers tooth assembly are installed and connected in the side through hole of rotating disk, slips assembly in the side through hole of rotating disk or pincers tooth assembly are arranged in pairs, two relative slips assemblies or two relative pincers tooth assemblies form a pair of slips assembly or a pair of pincers tooth assembly, it is one group of slips assembly or one group of pincers tooth assembly with a pair of slips assembly or with a pair of pincers tooth assembly, slips assembly or pincers tooth assembly are put in the side through hole of rotating disk, the outer wall of the pincers tooth slide block of the outer wall of the slip spider of its slips assembly or pincers tooth assembly coordinates the inwall of side through hole, the box hole of the slide block of the box hole of the slip spider of slips assembly or pincers tooth assembly is towards the rotating disk outside, rotating disk is installed and connected in the main through hole of housing, side ring connected in star on annular groove on inside and outside two sides of rotating disk and the perisporium of rotating disk is installed respectively some steel balls, in the annular groove of its a part of spheroid of steel ball on medial surface that annular groove on the medial surface of rotating disk connectsTangent the leaning on of inner bottom surface at the bottom of the steel ball that annular groove on the medial surface of rotating disk connects and the annular of housing, in the annular groove of its a part of spheroid of steel ball on medial surface that the side ring connected in star of the perisporium of rotating disk connects, the steel ball that the side ring connected in star of the perisporium of rotating disk connects with the main through hole internal perisporium of housing mutually by company, in the annular groove of its a part of spheroid of steel ball on lateral surface that annular groove on the lateral surface of rotating disk connects, tangent the leaning on of annular medial surface of the steel ball that the annular groove on the lateral surface of rotating disk connects and the step of case lid, case lid is fixedly connected with housing, be fastenedly connected case lid and housing with bolt by the connecting through hole of case lid and the connection blind hole of housing, make rotating disk and housing location, be that the center line of the center line of rotating disk and housing is on same straight line, the center line of the side through hole of housing is on the plane at the place of the center line of a plurality of side through hole of rotating disk, slips assembly or pincers tooth assembly and piston rod location, be the center line in box hole of slip spider of each slips assembly or each pincers tooth assembly slide block the box hole center line at grade, the center line in the box hole of the slide block of the center line in the box hole of the slip spider of its slips assembly or pincers tooth assembly and the vertical and intersectant centerline of housing, the center line of piston rod is on the plane at the place of the center line in the box hole of the slide block of the center line in the box hole of the slip spider of each slips assembly or each pincers tooth assembly, fixedly the center line of the center line of slide block and piston rod is on same straight line, piston rod and slips assembly or pincers tooth assembly location also comprise, in the locating hole of the pin jacking rotating disk of the spring catch on housing, behind its rotating disk location, there are a pair of slips assembly or pincers tooth assembly to be positioned at two piston rod middles, a pair of slips assembly or pincers tooth assembly in place when this becomes the rotating disk location to slips assembly or pincers tooth assembly, the center line in the box hole of the slide block of the box hole of the slip spider of a pair of slips assembly that it is in place or a pair of pincers tooth assembly and the center line of two piston rods are on same straight line, the center line of two spring pin holes of its correspondence on the both sides rotating disk of the center line of two locating holes of slip spider or two locating holes of slide block and slips assembly or pincers tooth assembly and the center line of rotating disk are at grade, on the plane at the center line place of each locating hole of the center line of the spring catch on housing on the rotating disk perisporium, transmission device comprises driving gear and driven gear, the tooth of driving gear put in the main through hole of housing and with mutual meshing connection of the tooth of driven gear on rotating disk, the center line of driving gear is parallel with the center line of housing, the head of the axle of driving gear exposes housing, and the head of its axle pierces in the side through hole of case lid, positioner comprises spring catch on housing and locating hole on corresponding rotating disk perisporium, be installed and connected in the locating hole of spring catch in the spring catch through hole on rotating disk and corresponding slip spider or slide block locating hole, be installed and connected in spring catch in the spring catch through hole on slip spider or the interior spring catch of the spring catch through hole on slide block and groove, the positioning sliding block on piston rod and the side through hole of rotating disk of piston rod pin thread, the specification of the pincers tooth assembly that its slips assembly specification of same group is identical or same group is identical, and the specification of the pincers tooth assembly of not identical or different group of slips assembly specification on the same group is not identical,It respectively organizes the slips assembly or pincers tooth assembly arranges respectively the specification that the corresponding oil pipe with different size adapts and mates, and like this, each organizes the slips assembly or each group pincers tooth assembly mates the oil pipe that it adapts to specification separately, the latch through hole is arranged on the shell of the spring catch on its housing, the center line of its latch through hole is vertical with the center line of shell, the pin of the spring catch on housing has the latch connecting hole, the center line of its latch connecting hole is vertical with the center line of the pin of spring catch, be equipped with latch, when the pin of spring catch by the spring pressure stretch and while putting in the locating hole of rotating disk fully, latch is injected in the latch connecting hole of pin of latch through hole on the shell of spring catch and spring catch, make between the pin of the shell of its spring catch and spring catch fixing, the head of the axle of driving gear protrudes from outside case lid, install on case lid and connect dial, it is placed in the head of the axle of driving gear, be carved with the numeral of the plurality of specifications of slips assembly that swinging reducing oil pipe clamping device equips or pincers tooth assembly on dial, the head of its axle is installed and is connected pointer, by pointer and dial, to show one group of slips assembly that whether slips assembly or pincers tooth assembly be in place and in place or the specification of pincers tooth assembly, the be tightly connected hydraulic oil pipeline of hydraulic system of port connection, in the whole course of work of swinging reducing oil pipe clamping device, swinging reducing oil pipe clamping device has four positioning states, it is the location of rotating disk, the secondary location of the positioning sliding block of piston rod, being located by connecting of piston rod and slips assembly or pincers tooth assembly, the location of rotating disk and slips assembly or pincers tooth assembly, in the whole impulse stroke of piston, at first in piston moves ahead process, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, thereby realize locating for the second time under slips assembly or pincers tooth assembly are in working order, simultaneously piston rod head puts in the box hole of slip spider of slips assembly or clamps in the box hole of slide block of tooth assembly, the pin clinching of the spring catch on the slip spider of slips assembly enter in the annular groove of piston rod head or the slide block of pincers tooth assembly the pin clinching of spring catch enter in the annular groove of piston rod head, realize being located by connecting of piston rod and slips assembly or pincers tooth assembly, in the piston retraction process, the pin clinching of the spring catch of rotating disk enters in the locating hole on the slip spider of slips assembly or the pin clinching of the spring catch of rotating disk enters to clamp in the locating hole of slide block of tooth assembly, realize the location of rotating disk and slips assembly or pincers tooth assembly, simultaneously, piston rod separates with slips assembly or pincers tooth assembly, and piston rod head is retracted in the side through hole of housing together with positioning sliding block, the duty when duty when duty when the course of work of swinging reducing oil pipe clamping device comprises dial rotation, swinging reducing oil pipe clamping device loosen, swinging reducing oil pipe clamping device clamp, during duty when dial rotation or when swinging reducing oil pipe clamping device loosens, its piston rod head is retracted in the side through hole of housing together with positioning sliding block, piston rod separates with rotating diskThe pin of each spring catch on the rotating disk pin that corresponding clinching enters in the locating hole on the slip spider of slips assembly or each spring catch on rotating disk is pressed respectively corresponding clinching respectively enters to clamp in the locating hole of slide block of tooth assembly, and each slips assembly or each pincers tooth assembly are positioned respectively in each corresponding side through hole of rotating disk, during duty when swinging reducing oil pipe clamping device clamps, the pin of the spring catch on its housing is also put in a locating hole of rotating disk fully by the spring pressure stretch, piston rod head stretches out the side through hole of housing together with the part of positioning sliding block, it puts in the side through hole of rotating disk, positioning sliding block is connected in the side through hole of the side through hole of housing and rotating disk, simultaneously piston rod head put in the box hole of slip spider of one group of slips assembly in place or the box hole of one group of slide block that clamps the tooth assembly in place in, the pin clinching of the spring catch on the slip spider of its slips assembly enter in the annular groove of piston rod head or the slide block of pincers tooth assembly the pin clinching of spring catch enter in the annular groove of piston rod head, and other slips assembly or pincers tooth assembly are positioned respectively in each corresponding side through hole of rotating disk, the switch of slips assembly or pincers tooth assembly is controlled by the reversal valve of hydraulic system, be equipped with handgrip, one end of handgrip has the outer-hexagonal structure, the interior hexagonal structure of the head of the specification of the outer-hexagonal structure of its handgrip and the axle of driving gear is complementary, thereby matches when the outer-hexagonal structure of handgrip is inserted in the interior hexagonal structure of head of axle of driving gear, it is characterized in that: the shell of swinging reducing oil pipe clamping device comprises housing, case lid, inside chime rings shape structure on the internal perisporium of one end of the main through hole of housing, at the bottom of its annular that is body, the plane that inner face at the bottom of the annular of body is cirque structure, the other end of main through hole is referred to as outer end, on all its bodies of side in outer end, the driving gear installing hole is arranged, driving gear installing hole on housing comprises counterbore and axis hole, side channel, counterbore is circular hole, the main through hole of connection body and the side channel of axis hole are arranged on the perisporium of axis hole, the spring catch connecting through hole is arranged on housing, case lid comprises covers body, step, flange arrangement, side through hole, the lid body is cirque structure, in the middle of the lid body, it is round tube hole, the step that one side of lid body is outwardly cirque structure, round tube hole in the middle of step interlinks with the round tube hole in the middle of the lid body, the opposite side of lid body is flange arrangement, and the through hole of the centre of flange arrangement interlinks with the round tube hole of the centre of lid body, and all sides of the round tube hole of the centre of lid body have a side through hole.

2. swinging reducing oil pipe clamping device according to claim 1, it is characterized in that: the center hole at the bottom of the annular of the body of shell and the center line of housing are on same straight line, the internal diameter of counterbore is greater than the internal diameter of axis hole, form a ledge structure between the internal perisporium of counterbore internal perisporium and axis hole, the center line of counterbore and axis hole is on same straight line, the center line of body is respectively perpendicular to two relative groove sides of side channel, uniform a plurality of connection blind holes on its body of the outer circumferential side of the outer end of main through hole, in its blind hole, it is internal thread, the center line of blind hole is parallel with the center line of housing, the center line of the step of case lid and lid body, flange arrangement is on same straight line, the internal diameter of side through hole of all sides of the round tube hole of the centre of lid body equals the external diameter of head of the axle of driving gear, all sides of the round tube hole of the centre of lid body are uniformly distributed a plurality of connecting through holes, and annular groove is arranged on the lateral surface of flange arrangement.

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