CN113305519B - Machining process and using method of anchoring rod capable of improving anchoring efficiency - Google Patents
Machining process and using method of anchoring rod capable of improving anchoring efficiency Download PDFInfo
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- CN113305519B CN113305519B CN202110697264.7A CN202110697264A CN113305519B CN 113305519 B CN113305519 B CN 113305519B CN 202110697264 A CN202110697264 A CN 202110697264A CN 113305519 B CN113305519 B CN 113305519B
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- 238000004873 anchoring Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 47
- 238000003754 machining Methods 0.000 title description 2
- 238000001125 extrusion Methods 0.000 claims abstract description 38
- 239000011435 rock Substances 0.000 claims abstract description 35
- 238000010008 shearing Methods 0.000 claims abstract description 30
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 238000005096 rolling process Methods 0.000 claims abstract description 25
- 238000005516 engineering process Methods 0.000 claims abstract description 21
- 238000013016 damping Methods 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 11
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 230000000694 effects Effects 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 38
- 239000010959 steel Substances 0.000 claims description 38
- 230000001965 increasing effect Effects 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 239000002994 raw material Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000010276 construction Methods 0.000 abstract description 5
- WYTGDNHDOZPMIW-RCBQFDQVSA-N alstonine Natural products C1=CC2=C3C=CC=CC3=NC2=C2N1C[C@H]1[C@H](C)OC=C(C(=O)OC)[C@H]1C2 WYTGDNHDOZPMIW-RCBQFDQVSA-N 0.000 description 11
- 238000003756 stirring Methods 0.000 description 11
- 238000005553 drilling Methods 0.000 description 7
- 239000002689 soil Substances 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
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- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0093—Accessories
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The utility model provides a can improve anchor rod's of anchor efficiency processing technology, including the extrusion process, through standard extrusion in the extrusion process, form the snakelike mouth of special construction in anchor rod body one end, the preferred shearing that includes of specific processing procedure, the extrusion, the bevel connection, the undergauge, the thread rolling, the equipment process, in the equipment process, assemble anchor rod body and pretension accessory, pretension accessory is preferred to be including the tray-ball type pad subassembly of preventing shearing, antifriction gasket, metal gasket and fixed damping nut, the anchor rod body uses the tray to divide into the interior pole in inboard and the outer pole in the outside as the boundary, the extrusion processing section department that has snakelike mouth is in the distal end of interior pole, from inside to outside overlaps the ball type pad in proper order on the outer pole, antifriction gasket, metal gasket and fixed damping nut. Above-mentioned anchor rod is strutted the country rock when using, through the anchoring agent in the snakelike mouthful intensive mixing hole of special construction, plays the effect that increases the anchor, through the structural design of pretension accessory, improves pretightning force conversion efficiency and prevents shear stress.
Description
Technical Field
The invention relates to the field of composite pressure processing of metal rod pieces, in particular to a processing technology of an anchoring rod capable of improving anchoring efficiency.
Background
Bolts are common throughout the world and are typically drilled and held in the rock formation to provide support to the rock formation as a whole which assists the support structure. For example, the anchor may be used in buildings and mines, tunnels, channels, canals, fences, shafts, aisles, access ways, tunnels, and the like.
The anchor rod is a rod piece system structure for reinforcing the rock-soil body, and the defect that the tensile capacity of the rock-soil body is far lower than the compression capacity is overcome through the longitudinal tension action of the anchor rod body. Seemingly limiting the detachment of rock-soil bodies from the original bodies. Macroscopically, the cohesiveness of the rock-soil body is increased, and from the mechanical point of view, the cohesiveness and the internal friction angle of the surrounding rock-soil body are mainly improved, and the anchor rod is actually positioned in the rock-soil body to form a new complex with the rock-soil body. The anchor rod in the composite body is the key for solving the problem of low tensile capacity of the surrounding rock body, so that the bearing capacity of the rock body is greatly enhanced.
For the anchor rod supporting construction process of a rock burst roadway, a soft rock roadway, a broken surrounding rock roadway and a roadway with a hollow easy-to-collapse hole, if an anchoring agent is directly put into an anchor rod drilling hole and then a conventional anchor rod is put into the anchor rod drilling hole for stirring, because the wall of the soft broken surrounding rock drilling hole cannot be fully contacted with the anchoring agent or the hole diameter ratio of the drilling hole is not matched with the rod diameter ratio of the anchor rod, the anchoring agent is easy to deviate or insufficiently stirred, the initial anchoring efficiency of the anchor rod is greatly reduced, and the hidden danger of roadway structure supporting in the future is remained, if the shape of the anchor rod is excessively changed only for enhancing the efficiency of stirring the anchoring agent, the yield strength and the tensile strength of the anchor rod are possibly greatly weakened, and the hidden danger of the structure of the anchor rod is remained, for example, the end plane snake-shaped resin anchor rod mentioned in patent CN94206148.9, the front end of the anchor rod is bent in a plane shape, the efficiency of stirring the anchoring agent is still enough, but the front end of the rod is greatly deformed, the intensity greatly reduced of the body of rod has left very big structural hidden danger, and this plane snakelike bending requires highly to drilling aperture, and processing cost and construction cost are all great.
Disclosure of Invention
In order to solve the problems, the invention provides a processing technology of an anchoring rod capable of improving anchoring efficiency, which utilizes deformed steel bar as a raw material, prepares an anchoring rod body with a special snake-shaped opening structure through a composite pressure processing technology, increases the contact area of the anchoring rod with surrounding rocks and an anchoring agent, and fully stirs the anchoring agent.
The technical scheme of the invention is as follows:
the utility model provides a can improve anchor efficiency's anchor rod's processing technology which characterized in that, includes the extrusion process, extrudees through the standard in the extrusion process, forms adjacent bellied snakelike mouth of array in anchor rod body one end, the length direction of snakelike mouth is parallel with the axis direction of anchor rod body.
According to the processing technology of the anchoring rod capable of improving the anchoring efficiency, the group of snake-shaped openings at the same position comprises the two semi-arc snake-shaped openings which are arranged in pairs, the two snake-shaped openings at the same group are symmetrical relative to the center of the axis of the anchoring rod body, and the two groups of snake-shaped openings adjacent to each other are distributed in a staggered manner, preferably in a staggered manner of rotating clockwise by 90 degrees.
According to the processing technology of the anchoring rod capable of improving the anchoring efficiency, the raw material adopted by the processing technology is the deformed steel bar without longitudinal ribs, the mechanical property of the anchoring rod body can meet the requirements that the yield strength is not less than 500MPa, the tensile strength is not less than 630MPa, and the elongation after rod body breakage is not less than 15% by controlling the chemical components of the deformed steel bar.
The processing technology of the anchoring rod capable of improving the anchoring efficiency comprises a shearing process, an extrusion process, a diameter reducing process and a thread rolling process.
The process for processing the anchoring rod capable of improving the anchoring efficiency further comprises a bevel notch process between the extrusion process and the necking process, wherein in the bevel notch process, a bevel notch is processed at the tail end of the anchoring rod body, and the bevel angle of the bevel notch is 30-60 degrees.
The processing technology of the anchoring rod capable of improving the anchoring efficiency further comprises an assembling process, wherein in the assembling process, the anchoring rod body is assembled with a pre-tightening accessory, the pre-tightening accessory comprises a shear-proof tray-spherical pad assembly, a gasket and a fixed damping nut, the shear-proof tray-spherical pad assembly comprises a tray and a spherical pad, the tray is sleeved on the anchoring rod body, the anchoring rod body is divided into an inner rod at the inner side and an outer rod at the outer side by taking the tray as a boundary, wherein the plurality of groups of convex snake-shaped openings are located at the far end of the inner rod, and the spherical pad, the gasket and the fixed damping nut are sequentially sleeved on the outer rod from inside to outside.
In the above processing technology of the anchoring rod capable of improving the anchoring efficiency, the plurality of sets of the raised serpentine-shaped openings form an extrusion processing section, and the ratio of the total length of the extrusion processing section to the length of the anchoring rod body is 360-: 1800-2800.
According to the processing technology of the anchoring rod capable of improving the anchoring efficiency, the gasket sequentially comprises the anti-friction gasket and the metal gasket from inside to outside.
The processing technology of the anchoring rod capable of improving the anchoring efficiency adopts an integrated assembly line manufacturing mode and comprises the following steps:
(1) setting a rear baffle plate of a dumping platform of the shearing machine according to working specifications to obtain a required shearing length, shearing the raw material screw-thread steel into the required length, and placing the required length in a discharging frame;
(2) placing the deformed screw-thread steel qualified in shearing on a snake-shaped extrusion discharging platform, replacing a snake-shaped pressing groove extrusion die according to the diameter of the screw-thread steel, and performing standard extrusion;
(3) placing the deformed steel bar qualified for extrusion on an inclined-opening extrusion discharging table, performing secondary shearing and pressing, adjusting the shearing angle of a shearing die, and performing end inclined-opening treatment;
(4) placing the deformed steel bar with qualified end bevel opening treatment on a reducing table, replacing a reducing mold according to the requirement of an end diameter ruler to be subjected to thread rolling treatment of the deformed steel bar, and performing standard reducing;
(5) placing the deformed steel bar qualified by diameter shrinkage on a thread rolling unloading platform, setting a thread rolling die of a thread rolling machine according to the specification of an anchoring rod so as to obtain a standard thread rolling size, replacing the thread rolling die according to the diameter of the deformed steel bar, and performing standard thread rolling;
(6) and (4) placing the screw-thread steel qualified in thread rolling on an assembly table, and assembling pre-tightening accessories according to the assembly requirements to finally form a complete set of anchor rod assembly.
The method for using the anchor rod processed by the processing technology comprises the steps of supporting surrounding rock, drilling a hole in the surrounding rock, firstly putting an anchoring agent into the hole, then pushing the anchor rod body into the hole, stirring, applying a pretightening force after the anchoring agent is solidified, and fully stirring the anchoring agent in the hole through the anchor rod body with the raised snake-shaped opening to prevent the anchoring agent from deviating and being incapable of stirring the anchoring agent, so that the effect of increasing the anchoring is achieved.
Compared with the prior art, the invention has the advantages that:
the invention relates to a processing technique of an anchoring rod capable of improving anchoring efficiency, which designs an integrated assembly line manufacturing mode of 'shearing-extrusion-inclined mouth-diameter reduction-thread rolling-assembly' in order to process a snakelike mouth with a mirror surface which is distributed in a staggered way and can greatly improve the anchoring efficiency on an anchoring rod body and assemble the snakelike mouth with a pre-tightening accessory with high pre-tightening force conversion efficiency. The anchoring rod and the assembly thereof manufactured by the process have the function of increasing the anchoring force, and on the basis of the technical characteristics of the prestressed anchoring rod, a plurality of snake-shaped openings are extruded at the tail end of the anchoring rod body, so that the contact area of the rod body with surrounding rocks and an anchoring agent is increased, the anchoring agent is fully stirred, the anchoring effect of the anchoring rod is increased, the supporting efficiency of the anchoring rod is improved, and the aim of stably supporting a roadway is fulfilled; the anchoring rod and the components thereof manufactured by the process have strong adaptability, are suitable for construction under complex geological conditions such as rock burst roadways, soft rock roadways, broken surrounding rock roadways, roadway along empty easy-to-collapse holes and the like, and enable the weak broken surrounding rock to realize initial anchoring through the anchoring rod components; the anchor rod and the component thereof manufactured by the process have the function of improving the conversion efficiency of the pretightening force, the iron gasket, the plastic antifriction gasket and the spherical pad are sequentially arranged between the fixed damping nut and the anchor rod tray, so that the fixed damping nut and the anchor rod tray are better connected, the fixed damping nut and the anchor rod tray have better connection elasticity, the conversion efficiency of converting the torque into the pretightening force is improved as much as possible under the condition of certain torque force, the tray and the spherical pad are designed into a shearing-preventing matching structure, the shearing stress borne by the anchor rod body can be effectively prevented, and the service life is prolonged.
When the anchoring rod and the component thereof manufactured by the process are used for supporting complex surrounding rocks such as a rock burst roadway, a soft rock roadway, a broken surrounding rock roadway, a roadway along a hollow easy-to-collapse hole and the like, the anchoring rod body with the raised snake-shaped opening fully stirs the anchoring agent in the hole, the anchoring agent is prevented from deviating and cannot be stirred, and the effect of increasing the anchoring is achieved.
Drawings
The aspects and advantages of the present application will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
fig. 1 is a flow chart of a process for manufacturing an anchoring rod capable of improving anchoring efficiency according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of an anchor rod and its components made by the process of an embodiment of the present invention;
FIG. 3 is a schematic view of an end structure of an anchor rod body manufactured by the process of the embodiment of the invention;
fig. 4 is a schematic view of the extrusion process of the rod body of the anchor rod manufactured by the process of the embodiment of the invention.
FIG. 5 is a cross-sectional view of an anchor rod body manufactured by the process of an embodiment of the present invention;
fig. 6 is a schematic view of the process of making an anchor rod according to an embodiment of the present invention for anchoring surrounding rocks in use.
Wherein the reference numerals denote:
1-an anchoring rod body, 2-a tray, 3-a spherical pad, 4-an antifriction gasket, 5-a metal gasket, 6-a fixed damping nut, 7-an anchoring agent filling area, 8-drilling holes, 9-a surrounding rock surface and 10-a surrounding rock.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. It should be noted that these embodiments are provided so that this disclosure can be more completely understood and fully conveyed to those skilled in the art, and the present disclosure may be implemented in various forms without being limited to the embodiments set forth herein.
The directions "front and back", "left and right", etc. mentioned in the present invention are only used to express the relative positional relationship, and are not restricted by any specific directional references in practical application.
Example 1
The embodiment provides a can improve anchor rod's of anchor efficiency processing technology, its key feature is including the extrusion process, through standard extrusion in the extrusion process, forms the snakelike mouth of special design in anchor rod body 1 (interior pole) one end, when adopting the screw-thread steel as raw and other materials, specifically can summarize as following step:
(1) the raw material deformed steel bar is sheared to a desired length using a shearing machine.
(2) And selecting a snake-shaped pressure groove extrusion die according to the diameter of the deformed steel bar, and performing standard extrusion to generate the snake-shaped opening.
(3) And (5) carrying out secondary shearing, using a shearing die, adjusting the shearing angle of the shearing die, and carrying out end bevel processing.
(4) And (4) performing standard diameter reduction on the deformed steel bar with qualified end bevel opening treatment by using a diameter reducing die.
(5) And (3) performing standard thread rolling on the deformed steel bar qualified by diameter reduction on a thread rolling machine by using a thread rolling die to generate threads on the surface of the tail end of the other end (outer rod) of the anchoring rod body 1.
(6) And assembling the anchoring rod body 1, and assembling pre-tightening accessories according to the assembling requirements to finally form a complete set of anchoring rod assembly.
As shown in FIG. 1, this example has developed an integrated "shearing-extruding-beveling-diameter-reducing-thread rolling-assembling" flow-line manufacturing method for the above steps. The specific process comprises the following steps:
(1) the dump bed tailgate of the shear is set according to the operating specifications to achieve the desired shear length. The raw material deformed steel bar is cut into required length and placed in a discharging frame.
(2) And (4) placing the deformed steel bars qualified in shearing on a snake-shaped extrusion discharging platform, and replacing the customized snake-shaped pressure groove extrusion die according to the diameter of the deformed steel bars to perform standard extrusion.
(3) And (3) putting the deformed steel bar qualified in extrusion on an inclined opening extrusion discharging platform, performing secondary shearing and pressing, adjusting the shearing angle of a shearing die, and performing end inclined opening treatment. After the die is adjusted, if the threaded steel rod body does not meet the specification, the die can be replaced as required.
(4) And (3) placing the deformed steel bar with qualified end oblique angle treatment on a reducing table, and replacing a reducing die according to the requirement of an end diameter ruler to be subjected to thread rolling treatment of the deformed steel bar to perform standard reducing.
(5) And (3) placing the deformed steel bar qualified in the diameter reduction treatment on a thread rolling unloading platform, setting a thread rolling die of a thread rolling machine according to the specification of the anchor rod so as to obtain a standard thread rolling size, and replacing the thread rolling die according to the diameter of the deformed steel bar to perform standard thread rolling.
(6) And (4) placing the screw-thread steel qualified in thread rolling on an assembly table, and assembling pre-tightening accessories according to the assembly requirements to finally form a complete set of anchor rod assembly.
Referring to fig. 2 to 5, in the anchor rod to be manufactured by the above processing technology of this embodiment, a group of serpentine ports at the same position of the anchor rod body 1 includes two semi-arc serpentine ports arranged in pairs, the two serpentine ports of the same group are symmetrical with respect to the axis center of the anchor rod body, two groups of serpentine ports adjacent to each other on the left and right are distributed in a staggered manner by rotating clockwise by 90 degrees, the assembled anchor rod body 1 and a pre-tightening accessory, wherein the pre-tightening accessory includes a shear-resistant tray-spherical pad assembly, a friction-reducing pad 4, a metal pad 5 and a fixed damping nut 6, in this embodiment, the friction-reducing pad 4 is a plastic pad, the metal pad 5 is an iron pad, the shear-resistant tray-spherical pad assembly includes a tray 2 and a spherical pad 3, the tray 2 is sleeved on the anchor rod body 1, and the anchor rod body 1 is divided into an inner rod at the inner side and an outer rod at the outer side by taking the tray 2 as a boundary, the plurality of groups of the raised snake-shaped openings are positioned at the far end of the inner rod, so that the spherical pad 3, the antifriction pad 4, the metal pad 5 and the fixed damping nut 6 are sequentially sleeved on the outer rod from inside to outside.
Further, the external diameter d of the deformed steel bar anchoring rod selected in the embodiment is 18-25mm, and the yield strength of the deformed steel bar rod body is not less than 500MPa, the tensile strength is not less than 630MPa, and the elongation after fracture of the rod body is not less than 15%.
In order to achieve the purpose, the chemical components of the thread steel preferably comprise less than or equal to 0.3% of C, less than or equal to 0.8% of Si, less than or equal to 1.6% of Mn, less than or equal to 0.04% of P and less than or equal to 0.04% of S, the mechanical yield strength Rel of the anchoring rod can reach more than 500MPa, the tensile strength Rm can reach more than 700MPa, the bending performance bending core diameter a is 6 times of the nominal diameter (18-22 mm), and the impact absorption energy (KV2) is more than or equal to 110J.
Further, the total length L of the anchor rod body 11Can be preferably 1.8-2.8m, as shown in fig. 2, the far end of the inner rod inside the tray of the anchoring rod body 1 is extruded by snakelike flattening as the structural feature, the length of the extrusion process of the anchoring rod body 1 is 360-370mm, and by combining fig. 4 and 5, the shape of the anchoring rod body 1 after extrusion is a half arc, 4 groups of half arcs after extrusion are formed, the half arcs after extrusion are distributed in a staggered manner, the center distance of the half arcs after extrusion is 100mm, and the side length of the bottom edge of a single half arc is lwIs 35mm, and has a maximum semi-arc width ls10mm, a half arc depth ldIs 3mm, and more preferably, the length l of the center of the first serpentine mouth and the end part of the serpentine anchoring-increasing anchor rod160-70mm, the length l of the center of the second serpentine and the center of the first serpentine2The length l of the center of the third serpentine port and the center of the second serpentine port is 100mm3Is 100mm, the center of the fourth serpentine port and the center of the third serpentine port have the length l4Is 100 mm.
Further, the diameter d of the anchoring rod body 1 can be preferably 18mm, 20mm, 22mm and 25mm, and the anchoring force of the rod body is respectively greater than 153kN, 189kN, 228kN and 294 kN; the tray bearing capacity is respectively larger than 165kN, 204kN, 247kN and 319 kN.
In addition, preferably, the straightness of the body of the anchoring rod body 1 is less than or equal to 2 mm/m; preferably, the body of the anchoring rod body 1 has corrosion resistance and flame retardant and antistatic properties; preferably, the anchoring rod body 1 cannot be rusted, and the anchoring end cannot be greasy-stained.
Referring to fig. 3, the tail end of the far end of the inner rod on the inner side of the tray of the anchoring rod body 1 in fig. 3 is processed by bevel processing, the processing angle of the bevel is adjusted according to a mould, and the bevel is 30-60 degrees.
In the embodiment, as an important measure for ensuring the anti-shearing performance of the tray-ball pad assembly, an inner groove in the shape of a circular arc groove is arranged on the outer side of the tray 2, the ball pad 3 is inserted into the inner groove and can rotate around the central axis of the inner groove, through the measure, the ball pad 3 freely rotates around the central axis of the inner groove from the circular arc hole, the rotation angle is 0-30 degrees, the ball pad is controlled to enter the inner groove of the tray to a depth of more than 2/3 of the thickness of the tray in a matching way, the rod body of the anchoring rod is ensured not to be in contact with the tray, the orifice shearing of the anchoring rod is effectively prevented, and preferably, the circular arc hole is formed by engineering reaming at the existing hole of the tray.
In addition, preferably, the bearing efficiency coefficient of the anchor rod nut assembly in the implementation is not less than 0.90; preferably, the specification model of the spherical cushion is phi 50mm multiplied by phi 25mm multiplied by 13 mm.
Referring to fig. 6, the embodiment also provides a method for using the anchor rod manufactured by the above-mentioned processing technology, fig. 6 shows a surrounding rock anchoring condition of the anchor rod and its components in use, the anchor rod and its components support complex surrounding rocks 10 such as a rock burst roadway, a soft rock roadway, a broken surrounding rock roadway, a roadway along an empty easy-to-collapse hole, and the like, a drill hole 7 is drilled in the surrounding rock, an anchoring agent is firstly put in the surrounding rock, then the snake-shaped anchor rod is pushed into the hole for stirring, and a pre-tightening force is applied after the resin cartridge is solidified; the anchoring rod with the snake-shaped anchor increasing characteristic can fully stir the anchoring agent in the large hole, prevent the anchoring agent from deviating and being incapable of stirring the anchoring agent, and play a role in increasing the anchor. The installation order of the pretension component of above-mentioned anchor rod can not be wrong, tray 2 in proper order, the ball-type is filled up 3, antifriction gasket 4, metal gasket 5, fixed damping nut 6, metal gasket 5 adopts the iron shim, antifriction gasket 4 adopts the plastic shim, the two cooperation has reduced rolling friction, anchor rod moment of torsion conversion rate has been improved, make and have better connection elasticity between fixed damping nut and the anchor rod tray, the design of cooperation ball-type pad, the anchor rod body of rod and tray contactless have further been guaranteed, effectively prevent that the anchor rod from taking place the drill way and cuting, the scheme of this embodiment can be used in strikeing ground pressure tunnel very well, soft rock tunnel, broken country rock tunnel, complicated occasions such as the hole tunnel of easily collapsing along the sky are strutted.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or additions or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (7)
1. A processing technology of an anchoring rod capable of improving anchoring efficiency is characterized by comprising an extrusion process, wherein a plurality of adjacent groups of raised snake-shaped openings are formed at one end of an anchoring rod body through standard extrusion in the extrusion process, the length direction of each snake-shaped opening is parallel to the axis direction of the anchoring rod body, one group of snake-shaped openings at the same position comprises two semi-arc snake-shaped openings which are arranged in pairs, the two snake-shaped openings at the same group are symmetrical relative to the axis center of the anchoring rod body, and two groups of snake-shaped openings adjacent to each other on the left and the right are distributed in a staggered manner;
the raw material adopted by the processing technology is deformed steel, and the processing technology specifically comprises the following steps:
(1) shearing the raw material deformed steel bar into a required length by using a shearing machine;
(2) selecting a snake-shaped pressure groove extrusion die according to the diameter of the deformed steel bar, and performing standard extrusion to generate the snake-shaped opening; the plurality of groups of raised snake-shaped openings form an extrusion processing section;
(3) performing secondary shearing, using a shearing die, adjusting the shearing angle of the shearing die, and performing end bevel processing;
(4) performing standard diameter reduction on the deformed steel bar with qualified end bevel opening treatment by using a diameter reducing mould;
(5) performing standard thread rolling on the deformed steel bar qualified by diameter reduction on a thread rolling machine by using a thread rolling die to generate threads on the surface of the tail end of the other end of the anchoring rod body;
(6) and (3) assembling the anchoring rod body, specifically assembling the anchoring rod body and the pre-tightening accessory according to the assembling requirement, and finally forming a complete set of anchoring rod assembly.
2. The process for manufacturing an anchoring rod capable of improving anchoring efficiency as claimed in claim 1, wherein the two sets of serpentine shaped openings adjacent to each other are staggered by 90 degrees in a clockwise direction.
3. The process for manufacturing an anchoring rod capable of improving anchoring efficiency according to claim 2, wherein the deformed steel bar is deformed steel bar without longitudinal ribs, and the mechanical properties of the anchoring rod body are controlled by controlling the chemical components of the deformed steel bar, so that the yield strength is not less than 500MPa, the tensile strength is not less than 630MPa, and the elongation after fracture of the rod body is not less than 15%.
4. The process for manufacturing an anchoring rod capable of improving anchoring efficiency as recited in claim 1, wherein in the end bevel processing of the step (3), the bevel angle of the bevel is 30 to 60 degrees.
5. The process for manufacturing an anchoring rod capable of improving anchoring efficiency according to any one of claims 1 to 4, wherein the pre-tightening fittings comprise an anti-shearing tray-ball-shaped pad assembly, a gasket and a fixed damping nut, the anti-shearing tray-ball-shaped pad assembly comprises a tray and a ball-shaped pad, the tray is sleeved on the anchoring rod body, the anchoring rod body is divided into an inner rod at the inner side and an outer rod at the outer side by taking the tray as a boundary, wherein the plurality of groups of the convex snake-shaped openings are positioned at the far end of the inner rod, and the ball-shaped pad, the gasket and the fixed damping nut are sleeved on the outer rod from inside to outside in sequence.
6. The process for manufacturing an anchoring rod capable of improving anchoring efficiency as claimed in claim 5, wherein said gasket comprises a friction-reducing gasket and a metal gasket from inside to outside.
7. The use method of the anchor rod processed by the processing technology of claim 5 or 6 is characterized in that surrounding rocks are supported, a hole is drilled in the surrounding rocks, an anchoring agent is firstly put into the hole, then the anchor rod body is pushed into the hole to be stirred, pretightening force is applied after the anchoring agent is solidified, the anchoring agent in the hole is fully stirred by the anchor rod body with the raised snake-shaped opening, the anchoring agent is prevented from deviating and cannot be stirred, and the effect of increasing the anchor is achieved.
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| CN202110697264.7A CN113305519B (en) | 2021-06-23 | 2021-06-23 | Machining process and using method of anchoring rod capable of improving anchoring efficiency |
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| CN202110697264.7A CN113305519B (en) | 2021-06-23 | 2021-06-23 | Machining process and using method of anchoring rod capable of improving anchoring efficiency |
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| CN113305519B true CN113305519B (en) | 2022-02-01 |
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Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2541605Y (en) * | 2002-04-10 | 2003-03-26 | 王永伯 | Wedge anchor arm |
| CN1954962A (en) * | 2005-10-25 | 2007-05-02 | 包凤鸣 | Cold upset extrusion shaping method for twisted steel roofbolt post bolt |
| AT509707B1 (en) * | 2010-05-04 | 2011-11-15 | Siemens Vai Metals Tech Gmbh | METHOD FOR HOT ROLLING OF STEEL STRIPS AND HOT ROLLING STRIP |
| CN101994315B (en) * | 2010-10-16 | 2012-02-01 | 山东科技大学 | Full-length adhesive prestressed anchor rod and construction method thereof |
| DE102011018241A1 (en) * | 2011-04-20 | 2012-10-25 | Werner Berwald | Method for manufacturing anchor setting process with capsule-sleeve mill, involves pushing capsule pipe together with capsule-sleeve mill on anchor head, with rotation movement of anchor head into anchor bore |
| CN203783616U (en) * | 2014-01-17 | 2014-08-20 | 中国矿业大学(北京) | Powerful composite anchor rod |
| CN204140105U (en) * | 2014-07-28 | 2015-02-04 | 山东焱鑫矿用材料加工有限公司 | Anchor rod body |
| CN204419218U (en) * | 2015-01-16 | 2015-06-24 | 安徽理工大学 | A kind of novel combination type steel strand anchor rod |
| CN104819003B (en) * | 2015-04-01 | 2017-12-12 | 中国矿业大学 | A kind of full anchor anchor for being easier to apply pretightning force |
| CN105422151B (en) * | 2015-12-16 | 2019-01-01 | 湖南科技大学 | A kind of extensible energy-absorbing anchor |
| CN205349391U (en) * | 2016-01-25 | 2016-06-29 | 唐永志 | Total length anchor stock |
| CN205614349U (en) * | 2016-04-29 | 2016-10-05 | 太原市环宇液压机械有限公司 | Stock automatic production line |
| CN109578038A (en) * | 2018-12-18 | 2019-04-05 | 泰安泰烁岩层控制科技有限公司 | A kind of sleeve assembly improving anchor pole anti-shear performance and the anchor pole including the component |
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