CN110202691A - Locking mechanism, tension of prestressed tendon holding member, implementation method and tensioning equipment - Google Patents
Locking mechanism, tension of prestressed tendon holding member, implementation method and tensioning equipment Download PDFInfo
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- CN110202691A CN110202691A CN201910582704.7A CN201910582704A CN110202691A CN 110202691 A CN110202691 A CN 110202691A CN 201910582704 A CN201910582704 A CN 201910582704A CN 110202691 A CN110202691 A CN 110202691A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 78
- 210000002435 tendon Anatomy 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000000694 effects Effects 0.000 claims abstract description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 42
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 20
- 238000005299 abrasion Methods 0.000 abstract description 12
- 230000005540 biological transmission Effects 0.000 description 12
- 210000000078 claw Anatomy 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000003014 reinforcing effect Effects 0.000 description 6
- 210000003205 muscle Anatomy 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/02—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members
- B28B23/04—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects wherein the elements are reinforcing members the elements being stressed
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- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses locking mechanism, tension of prestressed tendon holding member, implementation method and tensioning equipments, the locking mechanism includes helical gear nut and the helical gear that can engage, helical gear nut is for being threadedly connected to locking member, helical gear nut axis and helical gear axis have angle, angle is greater than 0 and is less than or equal to 90 °, for driving helical gear nut to rotate, helical gear can move along its axis helical gear.The structure both can guarantee that helical gear was initially aligned with helical gear nut and helical gear nut screws, helical gear nut driving can be made to be disengaged from state afterwards in place again not continue to be screwed into, greatly reduce the abrasion of the gear teeth on helical gear nut and abrasion to screw thread on locking member and helical gear nut and helical gear, the service life of each component is extended while reaching and well tightening and guarantee locking effect, reduce replacement number and use cost, the structure of the locking mechanism is simple, it is easy to use, it works well.
Description
Technical field
The present invention relates to technical field of rail traffic, in particular to a kind of locking mechanism, tension of prestressed tendon holding member,
Implementation method and tensioning equipment.
Background technique
In previous high-speed rail plate production process, either pre-tensioning system or post stretching are all using artificial single tendon stretch
Deformed bar, as shown in Figure 1, the end for several deformed bars being arranged in railway plate die 1 connects tension rod 2,
Pull rod 2 stretches out on the outside of 1 wall of railway plate die, and there are all deformed bar tensioning degree on railway plate die 1 for this mode
Difference, influences track plates performance and even results in track plates to scrap；In order to overcome oneself of the above problem and raising track plates production
Dynamicization is horizontal, track plates unit flowing water method production line is used now, as shown in Fig. 2, to all prestressing force of track plates unilateral side
Reinforcing bar uses 3 Integral synchronous tensioning of stretching machine, and after tensioning in place, tensioning anchor is arranged between 1 wall of tension rod 2 and railway plate die
Gu component keeps tensile state.
The Chinese patent application of Publication No. CN109262827A discloses a kind of tensioning of pre-track board prestress muscle
Structure is kept, external thread section is equipped on tension rod, external thread section is equipped with the nut using friction wheel mode driving or adopts
The nut driven with gear manner, with this after tension of prestressed tendon, driving nut is close and fits in railway plate die outer wall,
The tensile state for keeping presstressed reinforcing steel, although overcoming the loss of prestress that original anchor plate locking mode may cause in this way,
Guarantee that rail plate tension is qualified, still, existing including above-mentioned patent application keeps opening using nut locking mode
The structure of drawing exists after nut fitted in railway plate die outer wall, and driving mechanism still drives nut that there is rotation to become
Gesture causes external thread section and nut to be seriously worn or the failure of friction pulley friction wall or gear wear etc., so that tension rod
And the tensioning keeps structure to need to be replaced frequently, and increases cost.
Summary of the invention
It is an object of the invention to overcome the above-mentioned deficiency in the presence of the prior art, a kind of locking mechanism is provided, is answered in advance
Power muscle tensioning holding member, implementation method and tensioning equipment.
In order to achieve the above-mentioned object of the invention, the present invention provides following technical schemes:
A kind of locking mechanism, including helical gear nut and the helical gear that can be engaged, the helical gear nut is used for
It is threadedly connected to which on locking member, the helical gear nut axis and the helical gear axis have angle, and the angle is big
In 0 and being less than or equal to 90 °, for the helical gear for driving the helical gear nut to rotate, the helical gear can be along it
Axial movement.
Wherein, the helical gear nut is tool internal thread round nut, and round nut outer wall is equipped with helical teeth.
The locking mechanism is achieved in that the helical gear nut and the helical gear engagement rotation, the helical teeth
Nut is taken turns along to locking member, when the helical gear nut fits in described after locking member, that is, reaching described in its axial rotation direction
To after lock state, the helical gear nut stops operating, since the helical gear is still in rotary state, the helical gear
On helical teeth to the oblique cogging on the helical gear nut or the oblique cogging on the helical gear on the helical gear nut
Helical teeth there is active force, the oblique cogging on the helical gear nut is to the helical teeth or the helical gear spiral shell on the helical gear
Helical teeth on mother has reaction force to the oblique cogging on the helical gear, under the reaction force, on the helical gear
Oblique cogging of the helical teeth on the helical gear nut moves, so that the helical gear makes simultaneously along its own axial movement
The helical gear nut and helical gear dislocation, are no longer on meshing state.
Using a kind of locking mechanism of the present invention, the helical gear is able to drive the helical gear nut rotation, institute
It states helical gear nut rotation direction and is tightened against described to locking member, the helical gear nut stops operating, and the helical gear continues
Along its own axial movement while along the rotation of its own axis, the helical gear and the helical gear nut is made to be disengaged from shape
State not only can guarantee and initially screw to the helical gear nut, but also the helical gear nut driving can be made to be detached from afterwards in place and nibbled
Conjunction state does not continue to be screwed into, greatly reduce the helical gear nut and the abrasion to screw thread on locking member and
The abrasion of the gear teeth on the helical gear nut and the helical gear extends each component while reaching and well tightening effect
Service life reduces replacement number and use cost, while also reducing noise, and the structure of the locking mechanism is simple, uses
It is convenient, it works well.
Preferably, the helical gear nut axis and the helical gear axis are arranged in a mutually vertical manner.
The present invention also provides a kind of tension of prestressed tendon holding members, including a kind of locking as described in any of the above item
Structure, the helical gear nut are used to be threadedly connected to the external thread section of tension rod.
Wherein, which can be used for precast track plate, and the tension rod is connected to prestress steel
The end of muscle, after the deformed bar completes tensioning, the length of the external thread section on the tension rod meets described oblique
The stroke of gear nut makes its rotation fit in railway plate die wall；For example, after the deformed bar completes tensioning, the rail
Still there is the external thread section at guidance tape mold wall, then the helical gear nut can be rotated directly and fit in the rail
Guidance tape mold wall；If after the deformed bar completes tensioning, the external thread section is more than the railway plate die wall, i.e. institute
Stating has light bar segment between railway plate die wall and the external thread section, then, the helical gear nut is close to the track plates
The side of mold wall connects sleeve, and for the helical gear nut after external thread section rotation, the sleeve can fit in institute
State railway plate die wall；It can make the external thread section that there is sufficient length in this way, meet the helical gear nut rotation patch
Together in railway plate die wall.
Using a kind of tension of prestressed tendon holding member of the present invention, the helical gear nut is in the external thread section
After upper locking does not rotate, the relatively described helical gear nut enters slipping state to the helical gear immediately, the helical gear nut and
The helical gear no longer engages, so that helical gear continue to rotate will not drive the helical gear nut to rotate again, it can
Guarantee the locking of the helical gear nut, and can guarantee that the helical gear and the helical gear nut are unlikely to continuation power transmission and do
Function causes its damage, greatly reduces the external thread section, the helical gear nut and the helical gear abrasion, increases institute
The service life for stating tension rod, the secure lock after can satisfy tension of prestressed tendon, prevents loss of prestress, the presstressed reinforcing steel
Tensioning holding member structure is simple, easy to use, works well.
Preferably, which further includes shaft, and the helical gear is slidably socketed in the shaft, and described turn
Axis is able to drive the helical gear rotation.
It is further preferred that the shaft is splined shaft, the helical gear is equipped with the hole for being adapted to the splined shaft.
Using this structure setting, the splined shaft can provide good torque to the helical gear, meet described oblique
The rotation demand of gear, while can be good at meeting the needs of helical gear is axially moved along the splined shaft.
It is further preferred that the shaft is optical axis, the optical axis is equipped with keyway, and key is equipped in the keyway, described
Helical gear is equipped with the hole for being adapted to the optical axis and the key, and the key length meets the helical gear stroke demand.
Preferably, which further includes pedestal and the first driving assembly for being provided thereon, and the shaft is set to
On the pedestal and it is connected to the output end of first driving assembly, first driving assembly is for driving the shaft
Rotation.
It is further preferred that first driving assembly includes air motor, the shaft is connected to the air motor
Output end.
It is further preferred that first driving assembly includes first motor, the shaft is connected to the first motor
Output end.
It is further preferred that the first motor is stepper motor or servo motor.
It is further preferred that first driving assembly further includes the first retarder, the first motor connection described the
One speed reducer, the shaft are connected to the output end of first retarder.
Preferably, which further includes sliding rail and the second driving assembly, and the pedestal sliding adapts to described
On sliding rail, second driving assembly connects the pedestal and the pedestal is driven to move along the sliding rail.
It is further preferred that second driving assembly includes the second motor, hydraulic cylinder or cylinder.
When the preferred cylinder of the second driving assembly is as driving source, since gas compressibility is strong, thus it is opposite
In the flexible drive mechanism that motor driven or Driven by Hydraulic Cylinder are a kind of weak promotions, can the helical gear nut and it is described tiltedly
With certain retraction when gear abuts touching firmly, the helical gear nut and the helical gear are played a certain protective role.
It is further preferred that second motor is stepper motor.
It is further preferred that further including the second retarder and transmission when second driving assembly includes the second motor
Bar, second motor connect second retarder, and second retarder connects the drive rod, and the drive rod is used for
The pedestal is driven to move along the sliding rail.
Preferably, which further includes elastic mechanism, and the elastic mechanism is supported along the one end in its elastic direction
It is connected to the pedestal, the other end is connected on a helical gear end face, and the elastic mechanism is used to move to along the shaft
The dynamic helical gear provides restoring force.
Using this structure, one side benefit is the institute after helical gear nut fits in the railway plate die wall
It states helical gear to move along the shaft to misplace with the helical gear nut, so that the helical gear rotation no longer drives institute
State the rotation of helical gear nut, at the same it is described it is helical gear it is mobile compress the elastic mechanism, the elastic mechanism is by the helical teeth
It takes turns and send to pushing back, so that the helical gear rotation continues to provide certain power to the helical gear nut and makes the helical gear
Nut can be becoming tight, and the helical gear continuation is moved along the shaft after the helical gear nut check, make institute repeatedly with this
It states the relatively described helical gear nut of helical gear back and forth to jump, i.e., on the one hand the setting of the described elastic mechanism enables to the helical teeth
Nut check is taken turns, on the other hand after the pedestal drives the helical gear far from the helical gear nut, the elastic mechanism
The helical gear is reset into initial position, to carry out next subjob.
It is further preferred that the elastic mechanism is spring.
It is further preferred that the spring is socketed in the shaft.
The present invention also provides the implementation methods that a kind of tension of prestressed tendon is kept, and keep using tensioning as described above
Component, comprising the following steps:
A, the tension rod is pulled to drive deformed bar tensioning；
B, first driving assembly drives the shaft rotation, rotates the helical gear, second driving assembly
It drives the pedestal to move along the sliding rail, the helical gear is made to be close to the helical gear nut；
C, the helical gear engages the helical gear nut, and the helical gear nut is along external thread section rotation and rotation direction
Railway plate die wall；
D, the helical gear nut fits in the railway plate die wall, and the helical gear nut stops operating, described oblique
Gear is in rotary state, and oblique cogging of the helical teeth on the helical gear nut on the helical gear moves, and makes the helical teeth
Wheel is axially moved along the shaft simultaneously and compresses the elastic mechanism；
E, after shaft axial movement, the helical gear and the helical gear nut misplace the helical gear, release
Meshing state, i.e., the relatively described helical gear nut of the described helical gear skid；
F, second driving assembly drives the pedestal to move along the sliding rail, makes the helical gear far from the helical teeth
Nut is taken turns, helical gear shaft described in elastic mechanism restoring force effect lower edge, which is axially moved, to be resetted.
Using a kind of implementation method that tension of prestressed tendon is kept of the present invention, the helical gear nut is along described outer
After thread segment fits in railway plate die wall, the relatively described helical gear nut enters slipping state to the helical gear immediately, described
Helical gear nut and the helical gear no longer engage, so that helical gear continue to rotate will not drive the helical gear spiral shell again
Mother's rotation, not only can guarantee the locking of the helical gear nut, but also can guarantee that the helical gear and the helical gear nut are unlikely to
Continue power transmission acting, causes its damage, greatly reduce the external thread section, the helical gear nut and the helical gear mill
Damage, increases the service life of the tension rod, the secure lock after can satisfy tension of prestressed tendon prevents prestressing force from damaging
It loses, this method step is simple, and it is convenient to realize, works well.
The present invention also provides a kind of tensioning equipments of presstressed reinforcing steel, including at least one as described in any of the above item
Draw holding member, each corresponding tension rod of the tensioning holding member and a tensioning component, each tensioning
Component is for pulling the tension rod, i.e. presstressed reinforcing steel described in tensioning, after completion tensioning in each tensioning holding member
The helical gear nut is for fitting in railway plate die wall.
Using a kind of tensioning equipment of presstressed reinforcing steel of the present invention, by above-mentioned tension of prestressed tendon holding member,
It is described in the case where enabling to the helical gear nut location of initial thread socket on several described tension rods inconsistent
Helical gear makes it be close to railway plate die wall the corresponding helical gear nut driving, when the short helical gear nut of distance
After first locking, the corresponding helical gear skids, remaining described helical gear nut continuation is leaned on by the corresponding helical teeth wheel drive
To railway plate die wall, after all helical gear nuts lock, the pedestal just drives the helical gear far from corresponding
The helical gear nut, the inconsistent situation of the helical gear nut location that can be initially assembled in the tension rod
Under, so that the tensioning of all presstressed reinforcing steels, locking, holding, meet all presstressed reinforcing steels and achieve the effect that design prestress value, and
And after the tensioning equipment decontrols the tension rod, the prestressing force of presstressed reinforcing steel is not lost, and works well.
Preferably, the tensioning equipment further include:
Duan Mo tensioning mechanism, including several end mould power parts, each end mould power part connect described in one
Tensioning component, Duan Mo tensioning mechanism are used to be adapted to the end mould of the railway plate die；
Side form tensioning mechanism, including several side form power parts, each side form power part connect described in one
Tensioning component, side form tensioning mechanism are used to be adapted to the side form of the railway plate die.
It is further preferred that the end mould power part includes hydraulic cylinder.
It is further preferred that the side form power part includes hydraulic cylinder.
It is further preferred that Duan Mo tensioning mechanism is equipped with two rows of tensioning components, side form tensioning mechanism is set
There is tensioning component described in a row.
Preferably, the tensioning component includes claw, and the tension rod includes clamping section, and the claw is for being connected in institute
State clamping section.
Preferably, the clamping section is located at the tensioning boom end.
Preferably, Duan Mo tensioning mechanism further includes the first cabinet and the first lifting part, all end mould power
Component is set in first cabinet, and first lifting part makes the end mould for driving first cabinet to go up and down
All claws on drawing mechanism are connected in the corresponding tension rod.
Preferably, side form tensioning mechanism further includes the second cabinet and the second lifting part, all side form power
Component is set in second cabinet, and second lifting part makes the side form for driving second cabinet to go up and down
All claws on drawing mechanism are connected in the corresponding tension rod.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, with a kind of locking mechanism of the present invention, the helical gear is able to drive the helical gear nut rotation,
The helical gear nut rotation direction is simultaneously tightened against described to locking member, and the helical gear nut stops operating, the helical gear after
Along its own axial movement while the continuous rotation along its own axis, it is disengaged from the helical gear and the helical gear nut
State not only can guarantee and initially screw to the helical gear nut, but also the helical gear nut driving can be made to be detached from afterwards in place
Meshing state does not continue to be screwed into, greatly reduce the helical gear nut and it is described to the abrasion of screw thread on locking member, with
And on the helical gear nut and the helical gear gear teeth abrasion, reach well tighten effect while extend each component
Service life, reduce replacement number and use cost, while also reducing noise, the structure of the locking mechanism is simple, makes
With conveniently, work well；
2, with a kind of tension of prestressed tendon holding member of the present invention, the helical gear nut is in the external screw thread
It is locked in section after not rotating, the relatively described helical gear nut enters slipping state, the helical gear nut to the helical gear immediately
It is no longer engaged with the helical gear, so that helical gear continue to rotate will not drive the helical gear nut to rotate again, both
It can guarantee the locking of the helical gear nut, and can guarantee that the helical gear and the helical gear nut are unlikely to continuation power transmission and do
Function causes its damage, greatly reduces the external thread section, the helical gear nut and the helical gear abrasion, increases institute
The service life for stating tension rod, the secure lock after can satisfy tension of prestressed tendon, prevents loss of prestress, the presstressed reinforcing steel
Tensioning holding member structure is simple, easy to use, works well；
3, with a kind of tension of prestressed tendon holding member of the present invention, the shaft is splined shaft, the helical teeth
Wheel is equipped with the hole for being adapted to the splined shaft, and the splined shaft can provide the helical gear good torque, described in satisfaction
Helical gear rotation demand, while can be good at meeting the needs of helical gear is axially moved along the splined shaft；
4, with a kind of tension of prestressed tendon holding member of the present invention, second driving assembly is cylinder conduct
When driving source, since gas compressibility is strong, thus it is a kind of weak promotion relative to motor driven or Driven by Hydraulic Cylinder
Flexible drive mechanism, can be when the helical gear nut and the helical gear abut touching firmly with certain retraction, to described oblique
Gear nut and the helical gear play a certain protective role；
5, with a kind of tension of prestressed tendon holding member of the present invention, the elastic mechanism is along its elastic direction
One end is connected to the pedestal, and the other end is connected on a helical gear end face, and the elastic mechanism is used for along described
The mobile helical gear of shaft provides restoring force, on the one hand enables to the helical gear nut check, on the other hand works as institute
After the pedestal drive helical gear is stated far from the helical gear nut, the helical gear is reset to initial bit by the elastic mechanism
It sets, to carry out next subjob；
6, with a kind of implementation method that tension of prestressed tendon is kept of the present invention, the helical gear nut is described in
After external thread section fits in railway plate die wall, the relatively described helical gear nut enters slipping state to the helical gear immediately, institute
It states helical gear nut and the helical gear no longer engages, so that helical gear continue to rotate will not drive the helical gear again
Nut rotation, not only can guarantee the locking of the helical gear nut, but also can guarantee that the helical gear and the helical gear nut are unlikely
In continuing power transmission acting, its damage is caused, the external thread section, the helical gear nut and the helical gear mill are greatly reduced
Damage, increases the service life of the tension rod, the secure lock after can satisfy tension of prestressed tendon prevents prestressing force from damaging
It loses, this method step is simple, and it is convenient to realize, works well；
7, with a kind of tensioning equipment of presstressed reinforcing steel of the present invention, pass through above-mentioned tension of prestressed tendon maintaining part
Part, in the case where enabling to the helical gear nut location of initial thread socket on several described tension rods inconsistent,
The helical gear makes it be close to railway plate die wall the corresponding helical gear nut driving, when the short helical gear of distance
After nut first locks, the corresponding helical gear skids, remaining described helical gear nut continues to be driven by the corresponding helical gear
Dynamic to be close to railway plate die wall, after all helical gear nuts lock, the pedestal just drives the helical gear separate
The corresponding helical gear nut, the inconsistent feelings of the helical gear nut location that can be initially assembled in the tension rod
Under condition, so that the tensioning of all presstressed reinforcing steels, locking, holding, meet all presstressed reinforcing steels and achieve the effect that design prestress value,
And after the tensioning equipment decontrols the tension rod, the prestressing force of presstressed reinforcing steel is not lost, and works well.
Detailed description of the invention
Fig. 1 is railway plate die, the structure of deformed bar and tension rod, connection and positional diagram；
Fig. 2 is stretching machine, the structure of railway plate die and tension rod, connection and positional diagram；
Fig. 3 be a kind of locking mechanism of the present invention, presstressed reinforcing steel tensioning holding member schematic diagram；
Fig. 4 is the partial enlarged view of Fig. 3；
Fig. 5 is another visual angle figure of Fig. 3；
Fig. 6 is a kind of schematic diagram of the tensioning holding member of presstressed reinforcing steel of the present invention；
Fig. 7 is a kind of schematic diagram of the tensioning equipment of presstressed reinforcing steel of the present invention；
Fig. 8 is the cooperation schematic diagram of the tensioning equipment and railway plate die；
Fig. 9 is the connection relationship diagram of tensioning component and end mould power part in the tensioning equipment；
Figure 10 is the partial schematic diagram of side form tensioning mechanism in the tensioning equipment；
Figure 11 is the connection relationship diagram of tensioning component and side form power part in the tensioning equipment.
Marked in the figure: 1- railway plate die, 2- tension rod, 21- helical gear nut, 22- external thread section, 23- are clamped section, 3-
Stretching machine, 4- shaft, 41- helical gear, 5- pedestal, the first driving assembly of 51-, 52- sliding rail, 53- elastic mechanism, 6- tensioning portion
Part, 61- claw, 7- Duan Mo tensioning mechanism, the end 71- mould power part, the first lifting part of 72-, 721- pedestal, 722- polished rod,
723- third driving assembly, 724- screw rod transmission component, 8- side form tensioning mechanism, 81- side form power part, 82- second are gone up and down
Component.
Specific embodiment
Below with reference to test example and specific embodiment, the present invention is described in further detail.But this should not be understood
It is all that this is belonged to based on the technology that the content of present invention is realized for the scope of the above subject matter of the present invention is limited to the following embodiments
The range of invention.
Embodiment 1
As in Figure 3-5, a kind of locking mechanism of the present invention including helical gear nut 21 and can engage
Helical gear 41, the helical gear nut 21 are tool internal thread round nut, and round nut outer wall is equipped with helical teeth.
The helical gear nut 21 is for being threadedly connected to locking member, 21 axis of helical gear nut and described
41 axis of helical gear is arranged in a mutually vertical manner, and the helical gear 41 is for driving the helical gear nut 21 to rotate, the helical gear
41 can move along its axis.
The locking mechanism is achieved in that 41 engagement rotation of the helical gear nut 21 and the helical gear, described
Helical gear nut 21 along described in its axial rotation direction to locking member, when the helical gear nut 21 fit in it is described to locking member
Afterwards, that is, after reaching lock state, the helical gear nut 21 stops operating, since the helical gear 41 is still in rotation shape
State, the helical teeth on the helical gear 41 is to the oblique cogging on the helical gear nut 21 or the oblique cogging on the helical gear 41
There is active force to the helical teeth on the helical gear nut 21, the oblique cogging on the helical gear nut 21 is to the helical gear 41
On helical teeth or the helical gear nut 21 on helical teeth to the oblique cogging on the helical gear 41 have reaction force, in institute
It states under reaction force, oblique cogging of the helical teeth on the helical gear 41 on the helical gear nut 21 moves, so that institute
Helical gear 41 is stated simultaneously along its own axial movement, so that the helical gear nut 21 and the helical gear 41 is misplaced, is no longer on
Meshing state.
With a kind of locking mechanism of the present invention, the helical gear 41 is able to drive 21 turns of the helical gear nut
It is dynamic, 21 rotation direction of helical gear nut and be tightened against it is described to locking member, the helical gear nut 21 stops operating, it is described tiltedly
Along its own axial movement while gear 41 continues along the rotation of its own axis, make the helical gear 41 and the helical gear spiral shell
Mother 21 is disengaged from state, not only can guarantee initially screwing to the helical gear nut 21, but also can make the helical gear nut
21 screw and are disengaged from state afterwards in place and do not continue to be screwed into, and greatly reduce the helical gear nut 21 and described to tight lock part
On part on the abrasion of screw thread and the helical gear nut 21 and the helical gear 41 gear teeth abrasion, well tightened reaching
The service life that each component is extended while effect reduces replacement number and use cost, while also reducing noise, should
The structure of locking mechanism is simple, easy to use, works well.
Embodiment 2
As seen in figures 3-6, a kind of tension of prestressed tendon holding member of the present invention, including it is as described in Example 1
A kind of locking mechanism, shaft 4, pedestal 5, the first driving assembly 51, sliding rail 52, the second driving assembly and elastic mechanism 53, it is described
Helical gear nut 21 is used to be threadedly connected to the external thread section 22 of tension rod 2.
The helical gear 41 is slidably socketed in the shaft 4, and the shaft 4 is able to drive the helical gear 41 and rotates,
First driving assembly 51 is set on the pedestal 5, and the shaft 4 is set on the pedestal 5 and is connected to described first and drives
The output end of dynamic component 51, first driving assembly 51 are used to drive the rotation of the shaft 4, the sliding of pedestal 5 adaptation
In on the sliding rail 52, second driving assembly connects the pedestal 5 and the pedestal 5 is driven to move along the sliding rail 52,
The elastic mechanism 53 is connected to the pedestal 5 along the one end in its elastic direction, and the other end is connected to the one of the helical gear 41
On end face, the elastic mechanism 53 is used to provide restoring force to the helical gear 41 moved along the shaft 4.
As the preferred embodiment of the present embodiment, the shaft 4 is splined shaft, and the helical gear 41, which is equipped with, is adapted to the flower
The hole of key axis, using this structure setting, the splined shaft can provide the helical gear 41 good torque, described in satisfaction
The rotation demand of helical gear 41, while can be good at meeting the needs of helical gear 41 is axially moved along the splined shaft.
As the preferred embodiment of the present embodiment, first driving assembly 51 includes air motor, and the shaft 4 is connected to
The output end of the air motor.
As the preferred embodiment of the present embodiment, second driving assembly includes cylinder, since gas compressibility is strong, because
And it is a kind of flexible drive mechanism of weak promotion relative to motor driven or Driven by Hydraulic Cylinder, it can be in the helical gear nut
21 and the helical gear 41 firmly abut touching when with certain retraction, the helical gear nut 21 and the helical gear 41 are played
Certain protective effect.
As the preferred embodiment of the present embodiment, the elastic mechanism 53 is spring, and the spring is socketed on the shaft 4
On, on the one hand the setting of the spring enables to the helical gear nut 21 to lock, on the other hand when the pedestal 5 drives institute
After helical gear 41 is stated far from the helical gear nut 21, the helical gear 41 is reset to initial position by the elastic mechanism 53,
To carry out next subjob.
Wherein, which can be used for precast track plate, and the tension rod 2 is connected to prestress steel
The end of muscle, after the deformed bar completes tensioning, described in the length satisfaction of the external thread section 22 on the tension rod 2
The stroke of helical gear nut 21 makes its rotation fit in 1 wall of railway plate die；For example, after the deformed bar completes tensioning,
Still there is the external thread section 22 at 1 wall of railway plate die, then the helical gear nut 21 can directly rotate simultaneously
Fit in 1 wall of railway plate die；If after the deformed bar completes tensioning, the external thread section 22 is more than the rail
1 wall of guidance tape mold has light bar segment between that is, described 1 wall of railway plate die and the external thread section 22, then, the helical gear
Nut 21 connects sleeve close to the side of 1 wall of railway plate die, and the helical gear nut 21 is along 22 turns of the external thread section
After dynamic, the sleeve can fit in 1 wall of railway plate die；It can make the external thread section 22 that there is long enough in this way
Degree meets the rotation of helical gear nut 21 and fits in 1 wall of railway plate die.
With a kind of tension of prestressed tendon holding member of the present invention, the helical gear nut 21 is in the external screw thread
It is locked in section 22 after not rotating, the relatively described helical gear nut 21 enters slipping state, the helical teeth to the helical gear 41 immediately
Wheel nut 21 and the helical gear 41 no longer engage, so that continuing to rotate for the helical gear 41 will not drive the helical gear again
Nut 21 rotates, and not only can guarantee the locking of the helical gear nut 21, but also can guarantee the helical gear 41 and the helical gear spiral shell
Mother 21 is unlikely to continue power transmission acting, causes its damage, greatly reduces the external thread section 22, the helical gear nut 21 and institute
The abrasion for stating helical gear 41 increases the service life of the tension rod 2, the secured lock after can satisfy tension of prestressed tendon
It is fixed, loss of prestress is prevented, the tension of prestressed tendon holding member structure is simple, and it is easy to use, it works well.
Embodiment 3
As seen in figures 3-6, the implementation method that a kind of tension of prestressed tendon of the present invention is kept, using such as embodiment 2
The tensioning holding member, comprising the following steps:
A, the tension rod 2 is pulled to drive deformed bar tensioning；
B, first driving assembly 51 drives the shaft 4 to rotate, and rotates the helical gear 41, second driving
Pedestal 5 described in Component driver is moved along the sliding rail 52, and the helical gear 41 is made to be close to the helical gear nut 21；
C, the helical gear 41 engages the helical gear nut 21, and the helical gear nut 21 is along 22 turns of the external thread section
Dynamic and 1 wall of rotation direction railway plate die；
D, the helical gear nut 21 fits in 1 wall of railway plate die, and the helical gear nut 21 stops operating, institute
It states helical gear 41 and is in rotary state, oblique cogging of the helical teeth on the helical gear nut 21 on the helical gear 41 moves,
The helical gear 41 is set to be axially moved simultaneously along the shaft 4 and compress the elastic mechanism 53；
E, for the helical gear 41 after the shaft 4 axial movement, the helical gear 41 and the helical gear nut 21 are wrong
Position, releases meshing state, i.e., the relatively described helical gear nut 21 of the described helical gear 41 skids；
F, second driving assembly drives the pedestal 5 to move along the sliding rail 52, makes the helical gear 41 far from institute
Helical gear nut 21 is stated, the helical gear 41 shaft 4 described in 53 restoring force of elastic mechanism effect lower edge is axially moved multiple
Position.
The implementation method kept with a kind of tension of prestressed tendon of the present invention, the helical gear nut 21 is along described
After external thread section 22 fits in 1 wall of railway plate die, the relatively described helical gear nut 21 enters skidding to the helical gear 41 immediately
State, the helical gear nut 21 and the helical gear 41 no longer engage, so that continuing to rotate for the helical gear 41 will not be again
It drives the helical gear nut 21 to rotate, not only can guarantee the locking of the helical gear nut 21, but also can guarantee the helical gear 41
With the helical gear nut 21 be unlikely to continue power transmission acting, cause its damage, greatly reduce the external thread section 22, it is described tiltedly
The abrasion of gear nut 21 and the helical gear 41 increases the service life of the tension rod 2, can satisfy presstressed reinforcing steel
Secure lock after drawing prevents loss of prestress, and this method step is simple, and it is convenient to realize, works well.
Embodiment 4
As illustrated in figures 7-11, the tensioning equipment of a kind of presstressed reinforcing steel of the present invention, comprising:
Duan Mo tensioning mechanism 7, including several end mould power parts 71, each end mould power part 71 connect one
Tensioning component 6, the corresponding tension rod 2 of the tensioning component 6 and a tensioning holding member as described in Example 2,
Duan Mo tensioning mechanism 7 is used to be adapted to the end mould of the railway plate die 1, and each tensioning component 6 is for pulling correspondence
The tension rod 2, i.e. presstressed reinforcing steel described in tensioning completes the helical gear after tensioning in each tensioning holding member
Nut 21 is used to fit in the end die wall of railway plate die 1, and Duan Mo tensioning mechanism 7 is equipped with two rows of tensioning components 6, institute
Stating end mould power part 71 includes hydraulic cylinder, pulls the corresponding tensioning by tensioning component 6 described in the Driven by Hydraulic Cylinder
Bar 2；
Side form tensioning mechanism 8, including several side form power parts 81, each side form power part 81 connect one
The tensioning component 6, the corresponding tension rod 2 of the tensioning component 6 and a tensioning maintaining part as described in Example 2
Part, side form tensioning mechanism 8 are used to be adapted to each tensioning component 6 of side form of the railway plate die 1 for pulling pair
The tension rod 2 answered, i.e. presstressed reinforcing steel described in tensioning, the helical teeth after completion tensioning in each tensioning holding member
Wheel nut 21 is used to fit in the side form wall of railway plate die 1, and side form tensioning mechanism 8 is equipped with tensioning component 6 described in a row,
The side form power part 81 includes hydraulic cylinder, pulls corresponding described by tensioning component 6 described in the Driven by Hydraulic Cylinder
Pull rod 2.
The tensioning component 6 includes claw 61, and the tension rod 2 includes clamping section 23, and the clamping section 23 is located at described
2 end of tension rod, the claw 61 is for being connected in the clamping section 23.
Duan Mo tensioning mechanism 7 further includes the first cabinet and the first lifting part 72, all end mould power parts
71 are set in first cabinet, and first lifting part 72 makes the end mould for driving first cabinet to go up and down
All claws 61 on drawing mechanism 7 are connected in the corresponding tension rod 2, and first lifting part 72 includes pedestal
721, it sets on the pedestal 721 there are two vertically arranged polished rod 722 and third driving assembly 723, is set on first cabinet
There are the through-hole being adapted to two polished rods 722, the 723 connection wire rod transmission component 724 of third driving assembly, the screw rod
Transmission component 724 connects first cabinet, and the third driving assembly 723 is for driving first cabinet along the polished rod
722 move up and down, using this structure setting, since there are two the polished rods 722 to be used as guide rail for tool, so that first lifting
72 stability of component is good, goes up and down first cabinet by screw rod transmission component 724, precision is high, has good positioning；The third driving
Component 723 includes third motor and third retarder, the preferred stepper motor of third motor, described in third motor connection
Third retarder, the screw rod transmission component 724 are connected to the output end of the third retarder.
Side form tensioning mechanism 8 further includes the second cabinet and the second lifting part 82, all side form power parts
81 are set in second cabinet, and second lifting part 82 makes the side form for driving second cabinet to go up and down
All claws 61 on drawing mechanism 8 are connected in the corresponding tension rod 2.
With a kind of tensioning equipment of presstressed reinforcing steel of the present invention, by above-mentioned tension of prestressed tendon holding member,
In the case where enabling to 21 position of helical gear nut of initial thread socket on several described tension rods 2 inconsistent,
The helical gear 41 makes it be close to 1 wall of railway plate die the corresponding helical gear nut 21 driving, it is short when distance described in
After helical gear nut 21 first locks, the corresponding helical gear 41 skids, remaining described helical gear nut 21 continues corresponding
The driving of helical gear 41 is close to 1 wall of railway plate die, and after all helical gear nuts 21 lock, the pedestal 5 is
Drive the helical gear 41 far from the corresponding helical gear nut 21, can initially be assembled in the tension rod 2 described in
In the case that 21 position of helical gear nut is inconsistent, so that the tensioning of all presstressed reinforcing steels, locking, holding, meet all pre- answer
Power muscle achievees the effect that design prestress value, and after the tensioning equipment relieving tension rod 2, the prestressing force of presstressed reinforcing steel is not
Loss, works well.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. a kind of locking mechanism, which is characterized in that including helical gear nut (21) and the helical gear (41) that can be engaged, institute
It states helical gear nut (21) to be used to be threadedly connected to locking member, helical gear nut (21) axis and the helical gear
(41) axis has angle, and the angle is greater than 0 and less than or equal to 90 °, and the helical gear (41) is described oblique for driving
Gear nut (21) rotation, the helical gear (41) can move along its axis.
2. locking mechanism according to claim 1, which is characterized in that helical gear nut (21) axis and the helical teeth
Wheel (41) axis is arranged in a mutually vertical manner.
3. a kind of tension of prestressed tendon holding member, which is characterized in that including a kind of described in any item locks of such as claim 1-2
Locking structure, the helical gear nut (21) are used to be threadedly connected to the external thread section (22) of tension rod (2).
4. tensioning holding member according to claim 3, which is characterized in that it further include shaft (4), the helical gear (41)
It is slidably socketed on the shaft (4), the shaft (4) is able to drive the helical gear (41) rotation.
5. tensioning holding member according to claim 4, which is characterized in that further include pedestal (5) and be provided thereon
One driving assembly (51), the shaft (4) are set on the pedestal (5) and are connected to the output of first driving assembly (51)
End, first driving assembly (51) are used to drive the rotation of the shaft (4).
6. tensioning holding member according to claim 5, which is characterized in that further include sliding rail (52) and the second driving group
Part, pedestal (5) sliding adapt on the sliding rail (52), and second driving assembly connects the pedestal (5) and drives
The pedestal (5) moves along the sliding rail (52).
7. tensioning holding member according to claim 6, which is characterized in that further include elastic mechanism (53), the elasticity
Mechanism (53) is connected to the pedestal (5) along the one end in its elastic direction, and the other end is connected to one end of the helical gear (41)
On face, the elastic mechanism (53) is used to provide restoring force to along the shaft (4) mobile described helical gear (41).
8. the implementation method that a kind of tension of prestressed tendon is kept, which is characterized in that application tensioning as claimed in claim 7 is kept
Component, comprising the following steps:
A, the tension rod (2) is pulled to drive deformed bar tensioning；
B, first driving assembly (51) drives shaft (4) rotation, rotates the helical gear (41), and described second drives
Pedestal (5) described in dynamic Component driver is moved along the sliding rail (52), and the helical gear (41) is made to be close to the helical gear nut
(21)；
C, the helical gear (41) engages the helical gear nut (21), and the helical gear nut (21) is along the external thread section
(22) rotation and rotation direction railway plate die (1) wall；
D, the helical gear nut (21) fits in the railway plate die (1) wall, and the helical gear nut (21) stops operating,
The helical gear (41) is in rotary state, helical teeth of the helical teeth on the helical gear nut (21) on the helical gear (41)
Slot movement, is axially moved the helical gear (41) along the shaft (4) simultaneously and compresses the elastic mechanism (53)；
E, after the helical gear (41) is axially moved along the shaft (4), the helical gear (41) and the helical gear nut
(21) it misplaces, releases meshing state, i.e., the relatively described helical gear nut (21) of the described helical gear (41) is skidded；
F, second driving assembly drives the pedestal (5) to move along the sliding rail (52), keeps the helical gear (41) separate
The helical gear nut (21), the helical gear (41) shaft (4) described in the elastic mechanism (53) restoring force effect lower edge
It is axially moved and resets.
9. a kind of tensioning equipment of presstressed reinforcing steel, which is characterized in that including at least one as claim 3-7 is described in any item
Tensioning holding member, each corresponding tension rod (2) of the tensioning holding member and a tensioning component (6), each
The tensioning component (6) completes after tensioning each described for pulling the tension rod (2), i.e. presstressed reinforcing steel described in tensioning
Draw the helical gear nut (21) in holding member for fitting in railway plate die (1) wall.
10. tensioning equipment according to claim 9, which is characterized in that further include:
Duan Mo tensioning mechanism (7), including several end mould power parts (71), each end mould power part (71) connection one
A tensioning component (6), Duan Mo tensioning mechanism (7) are used to be adapted to the end mould of the railway plate die (1)；
Side form tensioning mechanism (8), including several side form power parts (81), each side form power part (81) connection one
A tensioning component (6), side form tensioning mechanism (8) are used to be adapted to the side form of the railway plate die (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582704.7A CN110202691B (en) | 2019-06-28 | 2019-06-28 | Locking structure, prestressed tendon tensioning and holding component, implementation method and tensioning device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910582704.7A CN110202691B (en) | 2019-06-28 | 2019-06-28 | Locking structure, prestressed tendon tensioning and holding component, implementation method and tensioning device |
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| CN110202691A true CN110202691A (en) | 2019-09-06 |
| CN110202691B CN110202691B (en) | 2024-02-02 |
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| CN111300636A (en) * | 2019-12-25 | 2020-06-19 | 河间市银龙轨道有限公司 | Locking device for tensioning rod nut |
| CN113026570A (en) * | 2021-03-27 | 2021-06-25 | 浙江泛华工程咨询有限公司 | Bridge prestress tensioning equipment |
| CN117183086A (en) * | 2023-11-08 | 2023-12-08 | 中铁九局集团有限公司 | Prestressing sleeper tension control device |
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| CN111300636A (en) * | 2019-12-25 | 2020-06-19 | 河间市银龙轨道有限公司 | Locking device for tensioning rod nut |
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| CN117183086B (en) * | 2023-11-08 | 2024-01-09 | 中铁九局集团有限公司 | Prestressing sleeper tension control device |
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| CN110202691B (en) | 2024-02-02 |
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