CN211116064U - Shell expansion piece and anchor rod shell expansion head with same - Google Patents

Abstract

The utility model relates to a shell piece and have this stock that rises shell piece that rises shell head should rise the shell piece and include: the expansion piece is connected to the end part of the expansion piece and can rotate relative to the expansion piece; one end of the elastic element is connected to the end part, facing the expansion piece, of the expansion piece, and the other end of the elastic element is connected to the expansion piece and used for pushing the expansion piece to rotate towards the wall of the anchor hole and enabling one end, far away from the expansion piece, of the expansion piece to abut against the wall of the anchor hole. The technical scheme of the utility model rotatable piece and the elastic element that expands are installed through the tip that rises the piece, and then when the wedge removes towards anchor eye opening direction in rising the shell, the elastic element promotes the piece that expands and rotates and make the tip that expands the piece support the anchor pore wall towards the anchor eye wall to prevent to rise the shell in the wedge drive and rise piece syntropy and remove, can effectively improve its anchoring performance, have better suitability.

Description

Shell expansion piece and anchor rod shell expansion head with same

Technical Field

The utility model relates to a geotechnical engineering anchor struts technical field, especially relates to a shell piece and has this stock that rises shell piece and rise shell head that rises.

Background

The existing supporting equipment comprises an anchor rod, wherein the end part of the anchor rod is provided with a shell expansion head, and the shell expansion head generally comprises a shell expansion sheet and a shell expansion inner wedge. In the anchoring process, one end of the anchor rod, which is provided with the shell expansion head, extends into the anchor hole, and then a user pulls the anchor rod to move towards the opening direction of the anchor hole so as to expand the shell expansion piece, so that the shell expansion head can be abutted against the wall of the anchor hole. However, when the anchor rod drives the expansion shell inner wedge to move towards the direction of the anchor hole opening, the expansion shell piece easily moves towards the direction of the anchor hole opening together with the expansion shell inner wedge, so that the anchoring performance is poor, and the anchor rod provided with the expansion shell head can not play the anchoring effect seriously.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel shell piece that rises, this shell piece that rises can support the anchor pore wall all the time when the shell wedge that rises moves towards the anchor eye opening to avoid the shell piece that rises along with the removal of the shell wedge syntropy that rises, have better suitability.

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

a shell expansion piece comprises a piece expansion piece, an expansion piece and a plurality of elastic elements, wherein the expansion piece is connected to the end part of the piece expansion piece and can rotate relative to the piece expansion piece; one end of the elastic element is connected to the end part, facing the expansion piece, of the expansion piece, and the other end of the elastic element is connected to the expansion piece and used for pushing the expansion piece to rotate towards the wall of the anchor hole and enabling one end, far away from the expansion piece, of the expansion piece to abut against the wall of the anchor hole.

Furthermore, the expansion piece is connected with the expansion piece through a pin shaft, and the expansion piece can rotate relative to the pin shaft.

Furthermore, notches are formed in two sides of the end part, facing the expansion piece, of the expansion piece, a first notch is formed in one end, facing the expansion piece, of the expansion piece, and the shape of the end part of the first notch is matched with that of the notch; the pin shaft can rotatably penetrate through the sheet expanding piece, two end parts of the pin shaft respectively extend out of the notches, and the two end parts of the pin shaft are correspondingly penetrated through the two end parts of the first notch one by one.

Furthermore, a protrusion is formed at the end part, facing the expansion piece, of the expansion piece, a second notch is formed at one end, facing the expansion piece, of the expansion piece, and the protrusion extends into the second notch.

Further, the elastic element is a spring, one end of the spring is connected to the end portion, facing the expansion piece, of the expansion piece, and the other end of the spring is connected to the expansion piece.

Furthermore, a plurality of expansion teeth are formed on one side, back to the elastic element, of the expansion piece, and tooth openings of the expansion teeth face the expansion piece.

An anchor rod shell expansion head comprises any one of the shell expansion pieces.

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

the shell piece that rises that provides and have this anchor rod that rises shell piece rise shell head among the above-mentioned technical scheme installs rotatable expansion piece and elastic element through the tip that rises the piece, and then when the wedge moves towards anchor eye opening direction in rising the shell, elastic element promotes expansion piece and rotates towards anchor eye wall and make the tip of expansion piece support the anchor pore wall tightly to prevent to rise the shell in the wedge drive and rise piece syntropy and move, can effectively improve its anchoring performance, have better suitability.

Drawings

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

Fig. 2 is a schematic view of the anchor casing head of fig. 1 from another perspective.

Fig. 3 is a schematic view of the anchor casing head shown in fig. 1 from another perspective.

Fig. 4 is a schematic view of the anchor casing head of fig. 1 from another perspective.

Fig. 5 is a schematic view of the region a shown in fig. 3.

100. An anchor rod shell expanding head; 10. expanding the shell and wedging; 11. a longitudinal opening; 12. a first inclined plane; 13. a narrow end; 14. a wide end; 15. mounting holes; 16. a hollow rod member; 20. a shell expanding sheet; 21. a sheet expanding piece; 211. a clamping part; 212. a second inclined plane; 213. a notch; 214. a protrusion; 215. expanding teeth; 22. an expansion member; 221. a first notch; 222. a second recess; 23. a resilient element or spring; 24. and (7) a pin shaft.

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, the present invention provides a novel anchor rod shell expansion head 100, and the anchor rod shell expansion head 100 can be abutted against and matched with an anchor hole (not shown), and has a better anti-pulling capability and a better anchoring performance.

This stock rises shell head 100 includes: the shell expansion inner wedge 10 and at least three shell expansion pieces 20 are arranged on the outer side surface of the shell expansion inner wedge 10 in the circumferential direction, the shell expansion pieces 20 are arranged at intervals, and the shell expansion pieces 20 can slide longitudinally relative to the shell expansion inner wedge 10. It will be appreciated that after the anchor rod expanding shell head 100 is fed into the anchor hole, the technician can pull the inner expanding shell wedge 10 to move towards the opening of the anchor hole, that is: the inner shell expanding wedge 10 moves along the longitudinal direction of the inner shell expanding wedge so as to expand the shell expanding sheet 20 positioned at the outer side of the inner shell expanding wedge 10, and further the shell expanding sheet 20 abuts against the wall of the anchor hole, thereby achieving the anchoring effect; in addition, at least three shell expansion pieces 20 are distributed on the outer side surface of the shell expansion inner wedge 10 along the circumferential direction, so that the abutting area between the anchor rod shell expansion head 100 and the wall of an anchor hole when the anchor rod shell expansion head is expanded can be effectively increased, and the anchoring performance of the anchor rod shell expansion head 100 is further improved.

Wherein, the inner wedge 10 of the expanding shell is arranged in a conical shape; in addition, when the anchor rod expanding shell head 100 is used for anchoring, the narrow end 13 of the expanding shell inner wedge 10 faces away from the bottom of the anchor hole, and the wide end 14 of the expanding shell inner wedge 10 faces towards the bottom of the anchor hole.

Wherein, this shell piece 20 includes: the expansion piece 21 is connected with the expansion piece 22, the expansion piece 22 can rotate relative to the expansion piece 21, namely, the expansion piece 22 rotates by taking one end connected with the expansion piece 21 as a shaft; one end of the elastic element 23 is connected with one side of the expansion piece 21 facing the expansion piece 22, the other end is connected with the expansion piece 22, the elastic element 23 is located on one side of the expansion piece 22 facing the expansion shell inner wedge 10, and the elastic element 23 is used for pushing the expansion piece 22 to rotate towards the anchor hole wall, so that one end of the expansion piece 22 far away from the expansion piece 21 abuts against the anchor hole wall.

It will be appreciated that during the process of feeding the bolt shell head 100 into the anchor bore, the wall of the anchor bore presses against the expansion element 22 to place the resilient element 23 in a compressed state; when the anchor rod expanding shell head 100 is sent into the anchor hole, the elastic element 23 returns from the compressed state to the relaxed state and pushes the expanding piece 22 to rotate towards the wall of the anchor hole, so that one end of the expanding piece 22, which is far away from the expanding piece 21, is abutted against the wall of the anchor hole; when the inner expanding shell wedge 10 is pulled to move longitudinally towards the opening direction of the anchor hole, the wide end 14 of the inner expanding shell wedge 10 gradually moves to the expansion piece 22, so that each expansion piece 21 expands and abuts against the wall of the anchor hole, namely, an anchoring force is formed between each expansion piece 21 and the wall of the anchor hole.

It can be understood, at the in-process that rises piece spare 21 and expand and open, expand the one end that piece spare 21 was kept away from to piece spare 22 and support the anchor pore wall all the time, other end butt is on piece spare 21 rises to can prevent to appear rising the phenomenon that piece spare 21 syntropy removed is expanded in the drive of shell interior wedge 10 to rise when the shell interior wedge 10 that rises removes towards anchor pore trompil direction, and then avoid appearing the stock and rise the problem that shell head 100 can not play the anchor effect.

Referring to fig. 2, a clamping portion 211 is formed on one side of the expansion piece 21 facing the expansion shell inner wedge 10, and the clamping portion 211 is T-shaped; one side of the inner expanding shell wedge 10 facing the expanding piece 21 is provided with a longitudinal opening 11, and the longitudinal opening 11 is arranged along the longitudinal direction of the inner expanding shell wedge 10, that is: the outer side surface of the inner expanding shell wedge 10 is provided with longitudinal openings 11 with the same number as the expanding pieces 21, and the length direction of the longitudinal openings 11 is the same as the length direction of the inner expanding shell wedge 10. The snap-in portion 211 snaps onto this longitudinal opening 11, namely: the one end that joint portion 211 kept away from the piece spare 21 that rises passes vertical opening 11 and with the medial surface looks butt of the interior wedge 10 of the shell that rises to the piece spare 21 that rises passes through joint portion 211 and vertical opening 11's joint mating reaction, so that the piece spare 21 that rises is spacing on the shell interior wedge 10 that rises. In addition, the expansion piece 21 can move along the length direction of the longitudinal opening 11.

Referring to fig. 3 and 4, first inclined surfaces 12 are formed on the outer side surface of the inner wedge 10 of the expanding shell, and the number of the first inclined surfaces 12 is the same as that of the expanding piece pieces 21; one side of the expansion piece 21 facing the first inclined surface 12 is formed with a second inclined surface 212, and the second inclined surface 212 is in sliding fit with the first inclined surface 12, that is: in the process that the wide end 14 of the inner wedge 10 of the expanding shell gradually moves to the expanding piece 22, the first inclined surface 12 and the second inclined surface 212 are attached to each other and gradually move towards the anchor hole opening direction, and meanwhile, the first inclined surface 12 is gradually far away from one end of the second inclined surface 212 back to the expanding piece 22. In addition, the longitudinal opening 11 is opened at the first inclined surface 12, and the snap-in portion 211 is formed at the second inclined surface 212 and faces the first inclined surface 12.

The expansion piece 22 and the expansion piece 21 are connected by a pin 24, and the expansion piece 22 can rotate relative to the pin 24. It can be understood that the pin 24 transversely penetrates through one end of the expansion piece 21 close to the expansion piece 22, and the pin 24 can rotate relative to the expansion piece 21, and the pin 24 is connected with the expansion piece 22, and the expansion piece 22 can rotate around the pin 24 under the pushing of the elastic element 23.

Wherein, a plurality of expanding teeth 215 are formed on one side of the expanding piece 21 back to the elastic element 23, the tooth mouth of the expanding teeth 215 faces the expanding piece 22, and the expanding teeth 215 are arranged on the expanding piece 21 in an arc shape. When the expansion piece member 21 expands, the expansion teeth 215 are abutted against the wall of the anchor hole, so that the anchoring force between the expansion piece member 21 and the wall of the anchor hole is increased, and the anchoring performance of the anchor rod expansion shell head 100 can be effectively improved.

It is understood that the outer side surface of the expansion piece 21 in the above embodiments may be smooth, besides the expansion teeth 215.

Referring to fig. 5, notches 213 are formed on both sides of the end of the expansion piece 21 facing the expansion piece 22, a first notch 221 is formed at one end of the expansion piece 22 facing the expansion piece 21, the shape of the end of the first notch 221 is matched with the notch 213, and the ends of both sides of the first notch 221 can be inserted into the notches 213 at both ends of the expansion piece 21; the pin shaft 24 is rotatably inserted into one end of the expansion piece 21 facing the expansion piece 22, two ends of the pin shaft 24 are located outside the expansion piece 21 and in the notch 213, and two ends of the pin shaft 24 are inserted into two ends of the first notch 221 in a one-to-one correspondence manner, so that the expansion piece 22 can rotate around the pin shaft 24 under the pushing of the elastic element 23, and one end of the expansion piece 22 away from the expansion piece 21 abuts against the wall of the anchor hole.

In addition, a protrusion 214 is formed at the end of the expansion piece 21 facing the expansion piece 22, a second notch 222 is formed at the end of the expansion piece 22 facing the expansion piece 21, and the protrusion 214 extends into the second notch 222. The second recess 222 is located at the bottom surface of the first recess 221.

Wherein, the elastic element 23 is a spring 23, one end of the spring 23 is connected to the end of the expansion piece 21 facing the expansion piece 22, the other end is connected to the expansion piece 22, and the spring 23 is located on the side of the expansion piece 22 facing the inner wedge 10 of the expansion shell.

It is understood that, in the above-mentioned embodiment, the elastic element 23 may be a member having deformation performance, such as an elastic rod, besides the spring 23; the spring 23 may be a straight spring, a torsion spring, or the like.

Wherein, the inner wedge 10 of the expanding shell is longitudinally provided with a mounting hole 15, and the inner wedge 10 of the expanding shell is connected with an anchor rod (not shown) through the mounting hole 15.

It can be understood that an internal thread (not shown) is formed on the side wall of the installation hole 15, an external thread is formed on the anchor rod, and further, the external thread at the anchor rod is in threaded connection with the internal thread at the inner side wall of the installation hole 15, so that the anchor rod and the inner expanding shell wedge 10 are integrally arranged; or, an external thread (not shown) is formed on the side wall of the mounting hole 15, an internal thread is formed on the anchor rod, and further, the internal thread at the anchor rod is in threaded connection with the external thread on the inner side wall of the mounting hole 15, so that the anchor rod and the inner wedge 10 of the expansion shell are integrally arranged.

Wherein, a hollow rod 16 is arranged at one end of the inner expanding shell wedge 10 close to the expanding piece 22, the hollow rod 16 is communicated with the mounting hole 15, and the anchor rod can penetrate through the hollow rod 16 and is screwed into the mounting hole 15.

The anchoring process of the anchor rod expanding shell head 100 provided in the above embodiments can be detailed as follows:

a user screws the anchor rod to the mounting hole 15 of the inner expansion shell wedge 10 and sends the anchor rod expansion shell head 100 into the anchor hole, so that the wide part of the inner expansion shell wedge 10 abuts against the bottom surface of the anchor hole; meanwhile, under the pushing of the elastic element 23, one end of the expansion piece 22 is abutted against the wall of the anchor hole, and the other end of the expansion piece 22 is abutted against the expansion piece 21, so that the expansion piece 21 is fixed in the anchor hole; the user pulls the inner wedge 10 of the expanding shell to move towards the end far away from the bottom surface of the anchor hole through the anchor rod, the wide end 14 of the inner wedge 10 of the expanding shell gradually moves to the expanding piece 22, and meanwhile, the expanding piece 21 gradually expands and supports the wall of the anchor hole, so that the shell head 100 of the expanding shell of the anchor rod is anchored with the anchor hole to form an integrated structure.

In the above embodiment, the rotatable expansion piece 22 and the elastic element 23 are mounted at the end of the expansion piece 21, and when the inner expansion wedge 10 moves towards the opening direction of the anchor hole, the elastic element 23 pushes the expansion piece 22 to rotate towards the wall of the anchor hole and the end of the expansion piece 22 abuts against the wall of the anchor hole, so as to prevent the inner expansion wedge 10 from driving the expansion piece 21 to move in the same direction, thereby effectively improving the anchoring performance and having better 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 (7)

1. The shell expansion piece is characterized by comprising a piece expansion piece (21), an expansion piece (22) and a plurality of elastic elements (23), wherein the expansion piece (22) is connected to the end part of the piece expansion piece (21) and can rotate relative to the piece expansion piece (21); one end of the elastic element (23) is connected to the end part, facing the expansion piece (22), of the expansion piece (21), and the other end of the elastic element is connected to the expansion piece (22) and used for pushing the expansion piece (22) to rotate towards the wall of the anchor hole and enabling one end, far away from the expansion piece (21), of the expansion piece (22) to abut against the wall of the anchor hole.

2. Shell expansion piece according to claim 1, characterized in that the expansion piece (22) is connected to the expansion piece (21) by a pin (24), and the expansion piece (22) is rotatable relative to the pin (24).

3. The shell expansion piece of claim 2, wherein notches (213) are formed on both sides of the end part of the expansion piece (21) facing the expansion piece (22), a first notch (221) is formed in one end of the expansion piece (22) facing the expansion piece (21), and the end part of the first notch (221) is matched with the notches (213); the pin shaft (24) is rotatably arranged in the sheet expanding piece (21) in a penetrating mode, two end portions of the pin shaft (24) extend out of the notches (213) respectively, and two end portions of the pin shaft (24) are correspondingly arranged at two end portions of the first notch (221) in a penetrating mode one by one.

4. The expansion piece according to claim 1, characterized in that a protrusion (214) is formed at the end of the expansion piece (21) facing the expansion piece (22), a second notch (222) is formed at the end of the expansion piece (22) facing the expansion piece (21), and the protrusion (214) extends into the second notch (222).

5. Shell expansion sheet according to claim 1, characterized in that said elastic element (23) is a spring, one end of which is connected to the end of the expansion sheet member (21) facing said expansion member (22) and the other end is connected to said expansion member (22).

6. Expansion shell according to claim 1, characterized in that a plurality of expansion teeth (215) are formed on the side of the expansion piece member (21) facing away from the elastic element (23), and the teeth openings of the expansion teeth (215) face the expansion piece (22).

7. An anchor shell-expanding head, characterized in that it comprises a shell-expanding sheet (20) according to any one of claims 1 to 6.

Images