CN211174164U - Anchor rod expansion shell head - Google Patents

Abstract

The utility model relates to an anchor rod shell expansion head, which comprises an inner shell expansion wedge, a clamping arm mechanism and an expansion piece component, wherein the expansion piece component is circumferentially arranged on the outer side surface of the inner shell expansion wedge and can longitudinally slide relative to the inner shell expansion wedge; the clamping arm mechanism comprises a plurality of clamping arm pieces, and the clamping arm pieces are arranged at intervals and connected with the expansion piece assembly; and one ends of the arm clamping pieces, which are far away from the expansion piece assembly, are connected with each other, and can be abutted against one side, which is far away from the expansion piece assembly, of the expansion shell inner wedge, so that the arm clamping pieces are integrally arranged. The technical scheme of the utility model be through each arm piece spare and the piece subassembly fixed connection that rises in the arm lock mechanism to with its spacing on the shell inner wedge that rises, effectively improved the stock in the time of preventing to rise the radial scattering of piece subassembly and risen the stability of shell head, have better anchor effect and suitability.

Description

Anchor rod expansion shell head

Technical Field

The utility model relates to a geotechnical engineering anchor struts technical field, especially relates to an stock shell head that rises.

Background

In the protection construction process of underground engineering, mine roadways, railway tunnels and side slopes, the stratum needs to be reinforced for preventing deformation, collapse and instability of ground survey, an anchor rod with an expansion shell head is buried in the stratum during the adopted main measures, and the stratum is reinforced by using the tension of the anchor rod and the concrete grouting body integrated with the anchor rod, so that the stratum forms an integral structure, and the purpose of controlling the deformation of the stratum is achieved.

The existing anchor rod shell expanding head adopts a method of pushing a wedge body and a shell expanding sheet against an anchor hole when expanding the shell expanding sheet, but the shell expanding sheet can slide along an inclined plane on the wedge body and can also be scattered radially. In the process of conveying the expansion shell head to a designated position, the expansion shell piece at the outer side of the wedge body in a radial scattering state is extruded by the irregular anchor hole or the residual broken stones in the anchor hole and is easily occluded with surrounding rocks halfway, so that the anchor rod is difficult to construct, and the expansion shell head cannot be taken out due to the overlarge anchoring force of the expansion shell piece to cause a waste hole.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel stock shell head that rises, this stock shell head that rises can avoid the shell splint that will rise when radially scattering of shell splint will rise the shell splint spacing in the shell wedge outside that rises, and its simple structure has higher stability.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an anchor rod shell expansion head comprises an inner shell expansion wedge, a clamping arm mechanism and an expansion piece assembly, wherein the expansion piece assembly is circumferentially arranged on the outer side surface of the inner shell expansion wedge and can longitudinally slide relative to the inner shell expansion wedge; the clamping arm mechanism comprises a plurality of clamping arm pieces, and the clamping arm pieces are arranged at intervals and connected with the expansion piece assembly; and one ends of the arm clamping pieces, which are far away from the expansion piece assembly, are connected with each other, and can be abutted against one side, which is far away from the expansion piece assembly, of the expansion shell inner wedge, so that the arm clamping pieces are integrally arranged.

Furthermore, a first bent part is formed at one end, far away from the expansion piece assembly, of each arm clamping member, the first bent part is radially arranged along the end face of the inner wedge of the expansion shell, and the first bent parts of the arm clamping members are mutually overlapped and connected into an integrated structure.

Furthermore, the clamping arm mechanism comprises a first fixing piece, the first bent part is provided with a first through hole, and the first fixing piece sequentially penetrates through the first through holes of the first bent parts so as to fixedly connect the first bent parts.

Furthermore, the expansion piece assembly comprises a plurality of expansion shell clamping pieces, and each expansion shell clamping piece is circumferentially arranged on the outer side surface of the expansion shell inner wedge and is connected to each clamping arm piece in a one-to-one correspondence manner.

Furthermore, a second through hole is formed in one end, close to the shell expansion clamping piece, of the arm clamping piece, a third through hole is formed in the shell expansion clamping piece, and the second through hole is matched with the third through hole in shape; the arm clamping piece is fixedly connected with the shell expansion clamping piece through a second fixing piece, and the second fixing piece penetrates through the second through hole and the third through hole in sequence.

Furthermore, a longitudinal groove is formed in one side, back to the inner wedge of the expansion shell, of the expansion shell clamping piece, the third through hole is formed in the longitudinal groove, and the clamping arm piece is in butt fit with the longitudinal groove.

Furthermore, a second bent part is formed at one end of the arm clamping piece back to the first bent part, and the second bent part bends towards one side departing from the shell expansion clamping piece.

Further, the inner wedge of the expansion shell is arranged in a conical shape.

Furthermore, a through hole is formed in the inner expanding shell wedge, and the inner expanding shell wedge is in threaded connection with the anchor rod through the through hole.

Furthermore, the outer side surface of the inner wedge of the expansion shell is provided with a limiting groove, and the limiting groove is in limiting fit with the clamping arm component.

Compared with the prior art, the beneficial effects of the utility model reside in that:

according to the technical scheme, the anchor rod expansion shell head is fixedly connected with the expansion piece assembly through the clamping arms in the clamping arm mechanism and limited on the expansion shell inner wedge, so that the expansion piece assembly is prevented from being scattered radially, the stability of the anchor rod expansion shell head is effectively improved, and the anchor rod expansion shell head has a good anchoring effect and applicability.

Drawings

Fig. 1 is a schematic structural view of an anchor rod expansion shell head according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the clip member shown in fig. 1.

Fig. 3 is a structural schematic diagram of the anchor rod expansion shell head shown in fig. 1 from another view angle.

Fig. 4 is a schematic structural view of the expanding-shell clip shown in fig. 3.

Fig. 5 is a schematic structural view of the inner wedge of the expanding shell shown in fig. 1.

Fig. 6 is a schematic structural view of another view angle of the inner wedge of the expanding shell shown in fig. 1.

Fig. 7 is a schematic view of the expansion shell clip shown in fig. 3 from another perspective.

100. An anchor rod shell expanding head; 10. expanding the shell and wedging; 11. a through hole; 111. internal or external threads; 12. a first inclined plane; 13. a guide groove; 14. a limiting groove; 20. a clamp arm mechanism; 21. a clip member; 211. a first bent portion; 212. a first through hole; 213. a second through hole; 214. a second bent portion; 22. a first fixing member; 30. an expansion piece assembly; 31. a shell expansion clamping piece; 311. a third through hole; 312. a longitudinal groove; 313. an abutting portion; 314. abutting the interface; 315. arc-shaped teeth; 316. a second inclined plane; 317. and (4) cambered surface.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

Referring to fig. 1, an embodiment of the present invention provides a novel anchor rod shell expansion head 100, where the anchor rod shell expansion head 100 can avoid the situation that the anchor rod is difficult to construct due to the engagement with surrounding rocks halfway when being sent to a specific location, and has a better anchoring performance.

This stock rises shell head 100 includes: the expansion shell inner wedge 10, the clamping arm mechanism 20 and the expansion piece assembly 30, wherein the expansion piece assembly 30 is circumferentially arranged on the outer side surface of the expansion shell inner wedge 10, and the expansion piece assembly 30 can longitudinally slide relative to the expansion shell inner wedge 10, so that the expansion piece assembly 30 gradually expands and tightly abuts against the side wall of an anchor hole (not shown) in the longitudinal sliding process; one end of the clamping arm mechanism 20 is fixedly connected with the expansion piece assembly 30, so that the clamping arm mechanism 20 and the expansion piece assembly 30 are integrally arranged; the other end of the clamping arm mechanism 20, which is opposite to the expansion piece assembly 30, can abut against the end of the expansion shell inner wedge 10, which is far away from the expansion piece assembly 30, and the side of the clamping arm mechanism 20 is circumferentially enclosed on the outer side of the expansion shell inner wedge 10.

It can be understood that a limiting station (not shown) for accommodating the inner expanding shell wedge 10 is formed between the clamping arm mechanism 20 and the expanding piece assembly 30, and the clamping arm mechanism 20 and the expanding piece assembly 30 cooperate to limit the inner expanding shell wedge 10, so as to prevent the expanding piece assembly 30 from being separated from the inner expanding shell wedge 10.

Wherein, the inner wedge 10 of the expansion shell is arranged in a conical shape, the expansion piece component 30 is circumferentially arranged at the narrow end (not shown) of the inner wedge 10 of the expansion shell and can longitudinally slide from the narrow end of the inner wedge 10 of the expansion shell to the wide end (not shown) of the inner wedge 10 of the expansion shell, and in the process that the expansion piece component 30 slides from the narrow end to the wide end, the expansion piece component 30 gradually expands and tightly abuts against the side wall of the anchor hole. In addition, the wide end of the inner wedge 10 of the expanding shell can abut against the clamping arm mechanism 20.

It can be understood that, when the anchor rod shell-expanding head 100 is not anchored to the anchor hole (not shown), the expanding sheet assemblies 30 are circumferentially distributed at the narrow end of the inner expanding shell wedge 10 towards one end of the inner expanding shell wedge 10; one end of the clamping arm mechanism 20 far away from the expansion piece component 30 is abutted against the end face of the wide end of the expansion shell inner wedge 10, and the other end is fixedly connected with the expansion piece component 30.

In addition, a through hole 11 is opened in the expanding case inner wedge 10, and the axial direction of the center axis of the through hole 11 is the same as the longitudinal direction of the expanding case inner wedge 10. In addition, a bolt (not shown) can extend into the through hole 11 and be screwed with the inner wedge 10 of the expanding shell.

It can be understood that an internal thread 111 is formed on the inner side wall of the through hole 11, and an external thread is formed on the end of the anchor rod, so that a technician can screw and cooperate the external thread on the anchor rod with the internal thread 111 at the through hole 11 to screw and connect the anchor rod with the inner expanding shell wedge 10 into an integrated structure; or, the inside wall in this through hole 11 department is formed with external screw thread 111, and the tip of stock is formed with the internal thread, and then, technical staff's accessible internal thread on the stock carries out the spiro union cooperation with the external screw thread 111 of through hole 11 department to with stock and the interior wedge 10 spiro union formula structure as an organic whole that rises.

The clamping arm mechanism 20 comprises a plurality of clamping arm members 21, and each clamping arm member 21 is arranged at intervals and connected with the expanding piece assembly 30, so that the clamping arm members 21 and the expanding piece assembly 30 are integrally arranged; in addition, the ends of the clip members 21 far away from the expansion piece assembly 30 are connected with each other so that the clip members 21 are integrally arranged, and the ends of the clip members 21 far away from the expansion piece assembly 30 can be abutted and matched with the side of the inner expansion shell wedge 10 back to the expansion piece assembly 30.

It can be understood that when the anchor rod shell expanding head 100 is not anchored to the anchor hole, the end surface of the wide end of the shell expanding inner wedge 10 abuts against the end of the clip arm member 21 away from the expansion piece assembly 30; when a user drives the inner expanding shell wedge 10 to move towards a direction far away from the bottom of the anchor hole through the anchor rod, the wide part of the inner expanding shell wedge 10 is separated from the clamping arm member 21, and the inner expanding shell wedge 10 longitudinally penetrates into the inner expanding piece assembly 30 to expand the expanding piece assembly 30, so that the expanding piece assembly 30 is abutted and tightly matched with the side wall of the anchor hole.

Referring to fig. 2, a first bent portion 211 is formed at an end of each clip arm 21 away from the expanding piece assembly 30, the first bent portion 211 is radially disposed along an end surface (not shown) of the inner wedge 10 of the expanding shell, and the first bent portions 211 of the clip arms 21 are stacked and connected to each other to form an integrated structure. Namely: the first bent portion 211 is located at an end surface of a wide end of the inner expanding shell wedge 10, the first bent portion 211 is radially arranged along the end surface of the wide end of the inner expanding shell wedge 10, the first bent portions 211 of the arm clamping members 21 are overlapped with each other, and the overlapped position of each first bent portion 211 is located at a central axis of the through hole 11 in the inner expanding shell wedge 10.

It can be understood that the arm clamping pieces 21 are connected to each other by the first bent portions 211 to form an integrated structure, and are spaced from each other to enclose a limiting station forming a barrel shape, the inner expanding shell wedge 10 is disposed at the limiting station, and the end surface of the wide end of the inner expanding shell wedge 10 can be abutted and matched with the bottom of the limiting station formed by each first bent portion 211.

In addition, the clamping arm mechanism 20 further includes a first fixing member 22, the first bent portion 211 is provided with a first through hole 212, the first fixing member 22 can sequentially pass through the first through holes 212 provided on the first bent portions 211, and fixedly connect the first bent portions 211, so as to connect the clamping arm members 21 into an integrated structure.

Referring to fig. 3 and 4, the expanding piece assembly 30 includes a plurality of expanding shell clamping pieces 31, each expanding shell clamping piece 31 is installed on the outer side surface of the expanding shell inner wedge 10 along the circumferential direction, the number of the expanding shell clamping pieces 31 is the same as that of the clamping arm pieces 21, and the expanding shell clamping pieces 31 are connected with the clamping arm pieces 21 in a one-to-one correspondence manner. In addition, the end portions of the two adjacent expansion shell clamping pieces 31 far from the clamping arm mechanism 20 are mutually abutted and matched, so that the phenomenon that the expansion shell clamping pieces 31 are mutually staggered due to the extrusion action of the side walls of the irregular anchor holes is prevented.

The arm member 21 has a second through hole 213 at an end thereof close to the shell expansion clamping piece 31, the shell expansion clamping piece 31 has a third through hole 311, and the second through hole 213 is matched with the third through hole 311 in shape. A technician can align the second through hole 213 with the third through hole 311, and sequentially pass the second fixing member through the second through hole 213 and the third through hole 311, so that the second fixing member can fix the clip member 21 on the outer side surface of the shell expanding clip 31.

Wherein, the side of the shell expansion clamping piece 31 back to the shell expansion inner wedge 10 is formed with a longitudinal groove 312, the third through hole 311 is opened at the longitudinal groove 312, and the clamping arm piece 21 is in butt fit with the longitudinal groove 312, that is: the parts of the clip member 21 except the first bent portion 211 are disposed at the longitudinal grooves 312, so that the clip member 21 can be fixed and limited by the longitudinal grooves 312, and friction between the shell-expanding clip 31 and the clip member 21 can be prevented.

In addition, a second bent portion 214 is formed at an end of the clamping arm member 21 facing away from the first bent portion 211, the second bent portion 214 is located at a side of the second through hole 213 away from the first bent portion 211, and is bent towards a side facing away from the shell expansion clamping piece 31 to form a barb, so that in a process that the anchor rod is brought to the shell expansion inner wedge 10 to longitudinally move away from the bottom direction of the anchor hole, the second bent portion 214 can abut against a side wall of the anchor hole to prevent the shell expansion clamping piece 31 from longitudinally moving along with the shell expansion inner wedge 10, and anchoring capability can be improved.

Referring to fig. 5 to 7, an abutting portion 313 and an abutting opening 314 are formed at an end portion of each shell expansion clamping piece 31 away from the clamping arm mechanism 20, and the abutting portion 313 of any shell expansion clamping piece 31 is in abutting fit with the abutting opening 314 of another adjacent shell expansion clamping piece 31, so that the shell expansion clamping pieces 31 are prevented from being staggered due to the extrusion effect of irregular anchor hole walls when the anchor rod shell expansion head 100 is inserted into the bottom of the anchor hole; furthermore, the abutting cooperation of the abutting portion 313 and the abutting port 314 of the other adjacent expansion shell clip 31 can avoid the deviation of the expansion process of the expansion shell clip 31 caused by the mutual staggering of the expansion shell clips 31, so as to prevent the action direction of the anchoring force of the expansion shell clip 31 and the anchor hole wall from being seriously influenced by the deviation of the expansion process of the expansion shell clip 31, effectively improve the structural stability of the anchor rod expansion shell head 100, and improve the anchoring effect.

In order to further improve the anchoring effect between the shell expansion clamping piece 31 and the wall of the anchor hole, a plurality of arc-shaped teeth 315 are formed on the outer side of the shell expansion clamping piece 31, the tooth mouth direction of the arc-shaped teeth 315 faces away from the bottom of the anchor hole, the anchoring force between the shell expansion clamping piece 31 and the wall of the anchor hole can be effectively improved, and the shell expansion clamping piece 31 is prevented from moving along with the longitudinal movement of the shell expansion inner wedge 10, namely, the shell expansion clamping piece 31 is prevented from moving along with the shell expansion inner wedge 10 towards the opening direction of the anchor hole.

Wherein, the outer side of this shell inner wedge 10 that rises vertically is formed with the first inclined plane 12 with the same quantity of shell splint 31 that rises to each first inclined plane 12 sets up each other at interval, and this first inclined plane 12 carries out sliding fit with shell splint 31 that rises, promptly: when the inner wedge 10 moves longitudinally towards the opening direction of the anchor hole, the clamping piece 31 is in a fixed state because of being abutted against the wall of the anchor hole, the first inclined surface 12 of the inner wedge 10 is attached to the clamping piece 31 and slides longitudinally relative to the clamping piece 31 to expand the clamping piece 31 outwards, so that the anchoring force of the clamping piece 31 on the wall of the anchor hole is improved, and the anchoring effect is improved. In addition, a second inclined surface 316 matched with the first inclined surface 12 is formed on the side surface of the expanding shell clamping sheet 31 facing the expanding shell inner wedge 10, and the second inclined surface 316 is in sliding fit with the first inclined surface 12; an arc face 317 is formed on the inner side of the expansion shell clip 31, and the arc face 317 is connected with the second inclined face 316.

Wherein, a plurality of guide grooves 13 are formed on the outer side surface of the inner wedge 10 of the expanding shell, and the guide grooves 13 are used for guiding and matching with the clamping sheets 31 of the expanding shell, namely: the expansion shell clamping piece 31 can be in sliding fit with the first inclined surface 12 along the guide groove 13. It can be understood that both sides of any one of the first inclined surfaces 12 are formed with guide grooves 13; when the inner expanding-shell wedge 10 moves toward the direction of the anchor eye opening, the inner expanding-shell wedge 10 can gradually slide to the inside of the expanding piece assembly 30 based on the guide groove 13 and expand each of the expanding-shell clamping pieces 31.

In addition, a limiting groove 14 is further formed in the outer side surface of the inner expanding shell wedge 10, the limiting groove 14 is connected with the first inclined surface 12, and the limiting groove 14 is located at the wide end of the inner expanding shell wedge 10. The clipping arm mechanism 20 and the limiting groove 14 are matched in a limiting manner, so that the clipping arm mechanism 20 can longitudinally slide along the limiting groove 14, namely: the part of the arm clamping member 21 is disposed in the limiting groove 14, and the inner shell expanding wedge 10 is based on the limiting cooperation between the limiting groove 14 and the arm clamping member 21, so that the inner shell expanding wedge 10 can slide in the length direction of the arm clamping member 21, and when the wide end of the inner shell expanding wedge 10 slides to the side of the shell expanding clamping piece 31 close to the first bending portion 211, the shell expanding clamping piece 31 abuts against the limiting groove 14, so as to prevent the inner shell expanding wedge 10 from separating from the arm clamping member 21 and the shell expanding clamping piece 31.

The working principle of the anchor rod expanding shell head 100 provided in the above embodiment can be detailed as follows:

a technician connects the anchor rod with the anchor rod shell expansion head 100 in a screw joint mode to form an integrated structure; the anchor rod shell expanding head 100 is conveyed into the anchor hole, the shell expanding clamping piece 31 and the second bending part 214 are attached to the inner wall of the anchor hole, and the first bending part 211 is abutted against the bottom of the anchor hole; the technician pulls the anchor rod to move towards the direction of the anchor hole opening, and drives the inner expanding shell wedge 10 to move towards the direction of the anchor hole opening, the inner expanding shell wedge 10 longitudinally moves to the inside of the expanding sheet assembly 30 based on the sliding fit action of the first inclined surface 12 and the second inclined surface 316, and each expanding shell clamping sheet 31 is expanded outwards, so that the expanding shell clamping sheet 31 abuts against the side wall of the anchor hole, and the purpose that the anchor rod expanding shell head 100 is anchored at the anchor hole is achieved.

The anchor rod expanding shell head 100 provided in the above embodiment is fixedly connected to the expanding sheet assembly 30 through each clamping arm 21 in the clamping arm mechanism 20, and is limited on the expanding shell inner wedge 10, so as to prevent the expanding sheet assembly 30 from radially scattering, effectively improve the stability of the anchor rod expanding shell head 100, and have better anchoring effect and applicability.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims (10)

1. The anchor rod shell expansion head is characterized by comprising an inner shell expansion wedge (10), a clamping arm mechanism (20) and an expansion piece assembly (30), wherein the expansion piece assembly (30) is circumferentially arranged on the outer side surface of the inner shell expansion wedge (10) and can longitudinally slide relative to the inner shell expansion wedge (10); the clamping arm mechanism (20) comprises a plurality of clamping arm pieces (21), and the clamping arm pieces (21) are arranged at intervals and connected with the expansion piece assembly (30); one ends of the arm clamping pieces (21) far away from the expansion piece assembly (30) are connected with each other, and can be abutted against one side of the expansion shell inner wedge (10) far away from the expansion piece assembly (30), so that the arm clamping pieces (21) are integrally arranged.

2. The anchor shell expanding head as recited in claim 1, characterized in that the end of the clip element (21) far away from the expanding sheet component (30) is formed with a first bent portion (211), the first bent portion (211) is arranged along the end face of the inner expanding shell wedge (10) in the radial direction, and the first bent portions (211) of the clip elements (21) are arranged on top of each other and connected into an integrated structure.

3. The anchor shell expanding head according to claim 2, wherein the clamping arm mechanism (20) comprises a first fixing member (22), the first bent portion (211) is provided with a first through hole (212), and the first fixing member (22) sequentially passes through the first through hole (212) of each first bent portion (211) to fixedly connect each first bent portion (211).

4. The anchor rod expanding shell head as recited in claim 2, wherein the expanding piece assembly (30) comprises a plurality of expanding shell clamping pieces (31), and each expanding shell clamping piece (31) is circumferentially arranged on the outer side surface of the expanding shell inner wedge (10) and is connected to each clamping arm piece (21) in a one-to-one correspondence manner.

5. The anchor rod shell expansion head as claimed in claim 4, wherein a second through hole (213) is formed at one end of the arm member (21) close to the shell expansion clamping piece (31), a third through hole (311) is formed in the shell expansion clamping piece (31), and the second through hole (213) is matched with the third through hole (311) in shape; the arm clamping piece (21) is fixedly connected with the shell expansion clamping piece (31) through a second fixing piece, and the second fixing piece sequentially penetrates through the second through hole (213) and the third through hole (311).

6. The anchor rod expanding shell head as recited in claim 5, characterized in that a longitudinal groove (312) is formed on a side of the expanding shell clamping piece (31) facing away from the expanding shell inner wedge (10), the third through hole (311) is opened on the longitudinal groove (312), and the clamping arm piece (21) is in abutting fit with the longitudinal groove (312).

7. The anchor shell-expanding head as recited in claim 4, characterized in that the end of the arm member (21) facing away from the first bend (211) is formed with a second bend (214), and the second bend (214) is bent towards the side facing away from the shell-expanding clip (31).

8. The anchor shell-expanding head as claimed in claim 1, characterized in that the shell-expanding inner wedge (10) is conically arranged.

9. The anchor rod shell expanding head as claimed in claim 1, wherein the shell expanding inner wedge (10) is provided with a through hole (11), and the shell expanding inner wedge (10) is screwed with the anchor rod through the through hole (11).

10. The anchor rod expansion shell head as claimed in claim 1, wherein the outer side surface of the expansion shell inner wedge (10) is provided with a limiting groove (14), and the limiting groove (14) is in limiting fit with the arm clamping member (21).

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