Mechanical anchor rod structure for cavern
By designing a mechanical anchor structure and utilizing the combination of an expansion cylinder and a threaded rod, the problems of insufficient stability and complex operation of existing anchor structures were solved, achieving the effects of simplified operation and improved stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-23
- Publication Date
- 2026-03-27
AI Technical Summary
Existing anchor bolt structures lack stability in caverns, and double expansion anchor bolt structures are complex, costly, and inconvenient to operate.
Design a mechanical anchor bolt structure that achieves double expansion anchoring of the anchor bolt through the cooperation of an expansion cylinder and a threaded rod, and by utilizing the functions of a limiting block and a set nut, thereby simplifying the operation process and improving stability.
This invention achieves a simple and easy-to-operate double expansion anchoring system, improving anchoring stability and reducing costs.
Smart Images
Figure CN224049234U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of anchor rod, especially a mechanical anchor rod structure for cavern. BACKGROUND
[0002] After drilling and washing of cavern or high slope, the process of inserting rod first and grouting later is adopted, that is, the anchor rod is anchored in the hole, and then grouting is carried out. The existing anchor rod structure is mostly single expansion and is opened on the inner wall of the hole, and the stability is limited, and loosening is prone to occur. The existing double expansion anchor rod has a complex structure, and the cost of the anchor rod is high, and the anchor rod is not easy to operate. SUMMARY
[0003] The utility model provides a mechanical anchor rod structure for cavern, which has a simple structure and is easy to operate. By rotating the anchor rod body, double expansion anchoring can be realized, and the stability of anchoring is improved.
[0004] The technical scheme of the utility model is as follows: a mechanical anchor rod structure for cavern, which comprises an expansion cylinder, an anchor rod body and a threaded rod. A limiting block is fixed in the expansion cylinder. A guide cylinder and a lock nut are fixed in sequence on the left end of the anchor rod body. The right side of the lock nut abuts against the limiting block. The right end of the threaded rod is screwed through the lock nut and is arranged in the guide cylinder. The left end of the threaded rod is fixedly connected with a left sink block. The left sink block is arranged at the left end of the expansion cylinder. A right sink block and a push nut that slide axially are arranged in sequence at the right end of the expansion cylinder. The right end of the anchor rod body slides through the right sink block and is screwed through the push nut.
[0005] Further, a guide ring is fixed in the expansion cylinder on the right side of the lock nut. An axle is fixed on the right end of the guide ring. The right sink block and the push nut are arranged in sequence on the axle and slide.
[0006] Further, a supporting spring is arranged between the limiting block and the left sink block. When the left sink block moves right, the supporting spring is compressed to play a buffering role.
[0007] Further, grooves are arranged at the left and right ends of the expansion cylinder in a circumferential direction.
[0008] Further, a fixed block is fixed on the left end of the left sink block. The left end of the fixed block is an arc-shaped end.
[0009] The utility model has the advantages of:
[0010] The utility model limits the axial left movement of the anchor rod body through the limiting block. By rotating the anchor rod body, the threaded rod drives the left sink block to move right under the action of the lock nut, so that the left end of the expansion cylinder is opened. At the same time, the anchor rod body drives the push nut to move axially left, so that the right sink block moves left, and the right end of the expansion cylinder is opened. The whole structure is simple and easy to operate, and double expansion anchoring is realized. BRIEF DESCRIPTION OF DRAWINGS
[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.
[0012] Fig. 1 It is a structural schematic diagram of the present application.
[0013] Fig. 2 It is an internal structural schematic diagram of the present application.
[0014] Expansion cylinder 1, anchor rod body 2, threaded rod 3, slotted slot 4, limit block 5, guide cylinder 6, lock nut 7, left countersunk block 8, supporting spring 9, fixed block 10, guide ring 11, shaft 12, right countersunk block 13, push nut 14. DETAILED DESCRIPTION
[0015] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.
[0016] As shown in Figs. 1-2 A mechanical anchor rod structure for a chamber, comprising an expansion cylinder 1, an anchor rod body 2 and a threaded rod 3, the left and right ends of the expansion cylinder 1 are uniformly distributed with slotted slots 4 in the circumferential direction, a limit block 5 is fixed in the expansion cylinder 1, the left end of the anchor rod body 2 is coaxially fixed with a guide cylinder 6 and a lock nut 7 in turn, and the lock nut 7 abuts against the right side of the limit block 5.
[0017] The right end of the threaded rod 3 is threaded through the lock nut 7 and placed in the guide cylinder 6, the left end of the threaded rod 3 is fixedly connected with a left countersunk block 8, the left countersunk block 8 is placed at the left end of the expansion cylinder 1, a supporting spring 9 is arranged between the limit block 5 and the left countersunk block 8, the left end of the left countersunk block 8 is fixed with a fixed block 10, and the left end of the fixed block 10 is an arc-shaped end.
[0018] The expansion cylinder 1 right side of the right side of the fixing nut 7 is fixed with a guide ring 11, the right end of the guide ring 11 is fixed with a shaft 12, the shaft 12 is sequentially slidably provided with a right sink block 13 and a push nut 14, the right sink block 13 and the push nut 14 are axially slid along the shaft 12, the right sink block 13 is placed at the right end of the expansion cylinder 1, the right end of the anchor rod body 2 sequentially slides through the guide ring 11, the right sink block 13, and is screwed through the push nut 14.
[0019] The use method of the mechanical anchor rod structure is as follows: the fixed block 10 is inserted into the bottom of the drill hole, the anchor rod body 2 is rotated, the anchor rod body 2 drives the guide cylinder 6 and the fixing nut 7 to rotate, the limiting block 5 limits the axial movement of the anchor rod body 2, the fixing nut 7 makes the threaded rod 3 move right, drives the left sink block 8 to move right, makes the left end of the expansion cylinder 1 open and abut against the hole wall of the drill hole, simultaneously, the push nut 14 is axially moved left, and the right sink block 13 is moved left, so that the right end of the expansion cylinder 1 is opened and abuts against the hole wall of the drill hole.
[0020] The above only describes the preferred embodiments of the present application, and is not used to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims
1. A mechanical rock bolt structure for a chamber, characterised in that: The expansion cylinder is internally fixed with a limiting block, the left end of the anchor rod body is sequentially fixed with a guide cylinder and a locking nut, the locking nut is in abutment with the right side of the limiting block, the right end of the threaded rod is threadedly passed through the locking nut and is placed in the guide cylinder, the left end of the threaded rod is fixedly connected with a left sunk head block, the left sunk head block is placed at the left end of the expansion cylinder, the right end of the expansion cylinder is sequentially provided with a right sunk head block and a pushing nut which slide axially, the right end of the anchor rod body is slidably passed through the right sunk head block and is threadedly passed through the pushing nut.
2. A mechanical rock bolt structure for a chamber according to claim 1, characterised in that: The expansion cylinder is internally fixed with a guide ring, the right end of the guide ring is fixed with a shaft rod, the shaft rod is sequentially and slidably provided with the right sunk head block and the pushing nut.
3. A mechanical rock bolt structure for a chamber according to claim 1 or 2, characterised in that: The limiting block and the left sunk head block are provided with a supporting spring therebetween.
4. A mechanical rock bolt structure for a chamber according to claim 1, characterised in that: The left and right ends of the expansion cylinder are both circumferentially and evenly provided with slot joints.
5. A mechanical rock bolt structure for a chamber according to claim 1, characterised in that: The left end of the left sunk head block is fixed with a fixed block, the left end of the fixed block is an arc-shaped end.