CN216008552U

CN216008552U - Flexible anchor rod

Info

Publication number: CN216008552U
Application number: CN202122404485.9U
Authority: CN
Inventors: 李晓; 吴海; 王卫军
Original assignee: Hunan University of Science and Technology
Current assignee: Hunan University of Science and Technology
Priority date: 2021-09-27
Filing date: 2021-09-27
Publication date: 2022-03-11
Anticipated expiration: 2031-09-27

Abstract

The utility model relates to a mine anchor struts the field, is a flexible stock that is applicable to tunnel support under complicated difficult conditions such as soft rock in mine, broken zone, deep well, high stress area. The anchor rod tray is fixed at the tail of the anchor rod body through a threaded sleeve, and a universal fixing sleeve, an antifriction coil and a torque nut are sequentially installed on the threaded sleeve from inside to outside. The utility model discloses can design flexible stock length according to the broken degree of on-the-spot country rock, solve the stock when strutting because of anchor length lead to the anchor power inadequately not enough, anchor effect poor, can not the extension scheduling problem in effective control deep country rock plasticity zone inadequately.

Description

Flexible anchor rod

Technical Field

The utility model relates to a mine anchor struts the field, is a flexible stock that is applicable to tunnel support under complicated difficult conditions such as soft rock in mine, broken zone, deep well, high stress area.

Background

With the annual increase of the mining depth of mines, most mines enter deep mining in sequence, the geological conditions are complex, the mine pressure is obviously increased, sudden geological disasters occur frequently, and the roadway supporting difficulty is increased more and more. In deep surrounding rocks, the surrounding rocks are subjected to non-uniform stress in the tunneling process of a roadway, rock masses are mutually extruded or expanded due to stress, so that cracks are generated among the surrounding rocks, blocks are separated, and loosening of the surrounding rocks causes problems of collapse of a roadway generating sheet, inward movement of two sides, bottom heaving and the like. If the deformation of the two sides is large, the rib spalling is serious finally, and a cavity is formed between the sprayed layer and the surrounding rock. The anchor rod with the common length can only be anchored in a loose surrounding rock surface layer, the supporting function of the anchor rod is difficult to play, the deformation of a roadway is difficult to control, and the like.

Therefore, seek a flexible stock, can be according to surrounding rock atress situation, the length of effective control stock, make the stock anchor in deep surrounding rock, when especially the deep plastic zone of surrounding rock increases, show the anchoring force of reinforcing stock, restrain the extension in plastic zone, prevent that the tunnel from producing great deformation, the stock is pulled out or is broken, leads to safety problems such as tunnel deformation uncontrollable, has important meaning to the construction quality and the security of control tunnel surrounding rock anchor engineering.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a can control stock length, strengthen a flexible stock of anchor power.

The purpose of the utility model is realized through the following ways: the utility model provides a flexible anchor rod, it includes the anchor rod body, and the afterbody of the anchor rod body passes through the fixed stock tray of screw sleeve, and universal fixed cover, antifriction coil, moment of torsion nut are installed from interior to exterior in proper order on the screw sleeve.

As the further optimization of this scheme, stock tray, 4 inner groovies of evenly distributed around the circular port of its central authorities, with corresponding, 4 outer lugs of evenly distributed around the universal fixed cover outside, the outer lug on the universal fixed cover meshes with the inner groovy on the stock tray.

As a further optimization of the scheme, two sides of the inner sleeve wall of the universal fixed sleeve are respectively provided with an inner convex block, and correspondingly, two sides of the threaded sleeve are respectively provided with an outer groove.

As a further optimization of the scheme, the middle part of the anchor rod tray is outwards protruded.

The utility model relates to a flexible stock can design flexible stock length according to the broken degree of on-the-spot country rock, has solved the stock and has leaded to the anchor power inadequately not enough when strutting, the anchor effect is poor, can not the extension scheduling problem in effective control deep country rock plasticity zone because of anchor length. The operation process is simple and easy to understand, the installation time is short, the installation speed is high, the labor intensity is low, the practicability is high, and the like. During construction, the exposed section of the flexible anchor rod is shorter than the exposed section of the anchor rod, so that the construction safety is high; compared with the common anchor cable, the anchor cable has higher strength and more common practicability.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of the universal fixing sleeve of the present invention;

FIG. 3 is a schematic view of the structure of the middle threaded sleeve of the present invention;

in the figure: 1. the anchor rod body 2, the tray 3, the threaded sleeve 4, the universal fixed sleeve 5, the antifriction coil 6, the torque nut 7, the inner convex block 8, the outer convex block 9, the outer groove 10 and the inner groove.

Detailed Description

As shown in fig. 1, the utility model relates to a flexible anchor rod, it includes the stock body of rod 1, and the afterbody of the stock body of rod passes through the fixed stock tray 2 of threaded sleeve 3, and universal fixed cover 4, antifriction coil 5, torque nut 6 are installed to threaded sleeve 3 from interior to exterior in proper order. The flexible anchor rod body be formed by steel strand wires processing, the tail end of the flexible anchor rod body is installed the screw thread sleeve, screw thread sleeve and the body of rod pass through the anchoring agent and link to each other.

As shown in fig. 2, 4 inner grooves 10 are uniformly distributed around the circular hole in the center of the anchor rod tray, and correspondingly, 4 outer protrusions 8 are uniformly distributed around the outer side of the universal fixing sleeve, and the outer protrusions on the universal fixing sleeve are meshed with the inner grooves on the anchor rod tray.

As shown in fig. 3, two sides of the inner sleeve wall of the universal fixed sleeve are respectively provided with an inner convex block 7, and correspondingly, two sides of the threaded sleeve are respectively provided with an outer groove 9.

The middle part of the anchor rod tray is outwards protruded, the contact area is increased when the universal fixing sleeve is pushed in, the contact area of the component can be kept large when the universal fixing sleeve rotates, and the stability is increased.

The utility model relates to a flexible stock work progress as follows:

1. according to the supporting scheme, the length of the threaded sleeve 3 is designed, and the threaded sleeve 3 is connected with the anchor rod body 1 into a whole through an anchoring agent;

2. punching holes in tunnel surrounding rock according to a supporting scheme, putting an anchoring agent into an anchoring hole, propping the anchoring agent by the front end of a flexible anchor rod body 1, pushing the anchoring agent into the bottom of the anchoring hole, utilizing a jumbolter to rotate a torque nut 6 to drive the flexible anchor rod body 1 to rotate together, uniformly stirring the anchoring agent while the flexible anchor rod body 1 rotates, and staying for 30 seconds to wait for the anchoring agent to be solidified;

3. the anchor rod tray 2, the universal fixing sleeve 4, the antifriction coil 5 and the torque nut 6 are sequentially installed on the exposed section of the flexible anchor rod, the anchor rod drilling machine is started to drive the torque nut 6 to rotate along the threaded sleeve 3, so that the antifriction coil 5 and the universal fixing sleeve 4 are sequentially pushed forwards along the threaded sleeve until the universal fixing sleeve 4 is pushed into the anchor rod tray 2 and the antifriction coil 5 is pressed tightly, and the universal fixing sleeve 4 cannot move forwards any more to stop the anchor rod drilling machine;

when the universal fixing sleeve 4 is installed along the threaded sleeve 3, the inner bump 7 on the inner side of the universal fixing sleeve 4 is required to be nested in the outer groove 9 of the threaded sleeve 3;

when the universal fixing sleeve 4 rotationally pushes the anchor rod tray 2 along the threaded

sleeve

3, 4 outer lugs 8 on the outer side of the universal fixing sleeve 4 are in butt joint fit with 4 inner grooves 10 in the anchor rod tray,

4. and (4) withdrawing the anchor rod drilling machine, and repeating the steps 1-3 to construct the next flexible anchor rod.

The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can be covered within the protection scope of the present invention without the changes or substitutions thought by the inventive work within the technical scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a flexible stock, it includes the stock body of rod (1), its characterized in that: the tail of the anchor rod body is fixed with the anchor rod tray (2) through the threaded sleeve (3), and the threaded sleeve (3) is sequentially provided with a universal fixed sleeve (4), an antifriction coil (5) and a torque nut (6) from inside to outside.

2. A flexible rock bolt according to claim 1, wherein: stock tray, 4 inner groovss (10) of evenly distributed around the circular port of its central authorities, with this correspondence, 4 outer lugs (8) of evenly distributed around the universal fixed cover outside, outer lug on the universal fixed cover meshes with inner groovy (10) on the stock tray.

3. A flexible rock bolt according to claim 1, wherein: two sides of the inner sleeve wall of the universal fixed sleeve are respectively provided with an inner convex block (7), and correspondingly, two sides of the threaded sleeve are respectively provided with an outer groove (9).

4. A flexible rock bolt according to claim 1 or 2, wherein: the middle part of the anchor rod tray is outwards protruded.