A shock-absorbing energy-absorbing anchor cable support structure
By using the anti-impact energy-absorbing anchor cable support structure, the impact energy is consumed through buffer connections and anti-impact energy-absorbing mechanisms, which solves the problem of anchor bolt and anchor cable failure under rock pressure and improves the stability and safety of the roadway.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI DATUN ENERGY
- Filing Date
- 2025-09-15
- Publication Date
- 2026-07-21
AI Technical Summary
In existing technologies, anchor bolts and anchor cables are prone to failure under rock pressure, leading to roadway deformation and safety hazards. Especially in roadways with rock pressure hazards, the deformation of anchor bolts and anchor cables is not coordinated, which can easily cause anchor cable breakage, anchor bolt failure, and severe deformation of U-shaped canopies.
An impact-resistant and energy-absorbing anchor cable support structure is adopted, including a buffer connection mechanism and an impact-resistant and energy-absorbing mechanism. The impact energy is consumed by damping springs and buffer discs, and the stability is improved by filling the grouting holes, thus preventing anchor cable breakage and anchor failure.
It effectively mitigates impact loads, prevents anchor cable and bolt failure, ensures roadway stability, and improves the safety and durability of surrounding rock support.
Smart Images
Figure CN224532754U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of support structure technology, specifically to an anti-impact energy-absorbing anchor cable support structure. Background Technology
[0002] When coal is mined at depth, the roadways, operating under high ground pressure, exhibit significant deformation characteristics. This is especially true for roadways in coal seams with a risk of rockburst. The instantaneous release of a large amount of elastic compressive energy during a rockburst can cause anchor bolts and cables to snap suddenly, leading to rapid subsidence of the roadway roof and rapid bulging of the roadway floor. This can even result in the complete closure of the roadway, ultimately causing severe casualties and damage to equipment and property. Ensuring the stability of the surrounding rock support in rockburst-prone roadways has become a critical and urgent problem to be solved.
[0003] For roadways with high impact risk, the support method of "rock bolts + anchor cables + U-shaped canopy" is mostly adopted. Although this support method can effectively control the deformation and damage of the roadway under static load, the anchor cable support and rock bolt support always act independently. Due to the difference in their elongation and deformation resistance, the deformation of the rock bolts and anchor cables is not coordinated. When impact load is applied, it is very easy to cause the anchor cables to break, the rock bolts to fail, and the U-shaped canopy to deform severely. Utility Model Content
[0004] This invention proposes an anti-impact energy-absorbing anchor cable support structure to solve the problem that anchor bolts and anchor cables are prone to failure due to impact loads in the prior art.
[0005] The technical solution of this utility model is as follows: A shock-resistant and energy-absorbing anchor cable support structure includes an anchor bolt, an anchor cable, a preload nut, a buffer connection mechanism, and a shock-resistant and energy-absorbing mechanism. The anchor cable is disposed on one side of the anchor bolt, and an anchor cable cap is installed at one end of the anchor cable. The preload nut is installed on the anchor bolt through a threaded connection. The buffer connection mechanism is disposed between the anchor bolt and the anchor cable, and is used to install and fix the anchor bolt and the anchor cable and to buffer the anchor cable. The shock-resistant and energy-absorbing mechanism is disposed on the anchor bolt and is used to buffer and absorb energy between the anchor bolt and the surrounding rock.
[0006] Preferably, the anti-impact energy absorption mechanism includes a first support ring, a second support ring, and a first damping spring. The first support ring and the second support ring are fitted onto the anchor rod, and a plurality of the first damping springs are fixedly disposed between the first support ring and the second support ring.
[0007] Furthermore, the buffer connection mechanism includes a first cavity, a buffer disc, a first positioning disc, a second damping spring, and a connecting assembly. The first cavity is formed inside the anchor rod, and a movable opening is provided at one end of the first cavity near the anchor cable. The buffer disc is slidably disposed within the first cavity, and a buffer post is fixedly disposed on the buffer disc. The buffer post extends through the movable opening and out of the anchor rod. The first positioning disc is fixedly disposed at the end of the buffer post away from the buffer disc. The second damping spring is fixedly disposed between the buffer disc and the side wall of the first cavity. The connecting assembly is disposed between the anchor cable and the first positioning disc for installing the anchor cable and the anchor rod.
[0008] Furthermore, the connecting assembly includes a first positioning through groove, a reset groove, a second positioning disk, a support cover, and positioning blocks. The first positioning disk has multiple first positioning through grooves on its side wall. The reset groove is located on the first positioning disk. The second positioning disk is rotatably mounted on the first positioning disk. The second positioning disk has multiple second positioning through grooves on its side wall. A reset post is fixedly mounted on the second positioning disk. The end of the reset post away from the second positioning disk is rotatably connected to the bottom of the reset groove. A torsion spring is fitted onto the side wall of the reset post. Both ends of the torsion spring are fixedly connected to the bottom of the reset groove and the reset post, respectively. The support cover is fixedly mounted on the end of the anchor cable near the anchor rod. The support cover is adapted to the shape of the first positioning disk. Multiple positioning blocks are fixedly mounted on the inner wall of the support cover near the anchor rod. The positioning blocks are adapted to the shapes of the first and second positioning through grooves. The first and second positioning through grooves are interleaved.
[0009] Furthermore, a rubber pad is fixedly provided on the side wall of the positioning block.
[0010] Based on the above scheme, a grouting port is provided at the end of the anchor rod away from the anchor cable, and multiple grouting holes are provided on the side wall of the anchor rod, with the grouting holes communicating with the grouting port.
[0011] The working principle and beneficial effects of this utility model are as follows:
[0012] 1. In this utility model, by setting up a buffer connection mechanism, after the support cover is fastened onto the first positioning plate and the second positioning plate, the positioning block can cooperate with the first positioning through groove and the second positioning plate respectively to realize the installation and fixation between the support cover and the first positioning plate. At the same time, the second damping spring can buffer the impact force on the anchor cable, thereby preventing the anchor cable from breaking.
[0013] 2. In this utility model, by setting up an anti-impact energy absorption mechanism, when an impact pressure occurs, the first damping spring can quickly achieve large-scale compression deformation to make way under the impact load, thereby consuming and reducing some of the impact energy, and ultimately playing the role of mitigating the impact load, thereby preventing the anchor bolt from failing.
[0014] 3. In this utility model, by setting up grouting ports and grouting holes, mud can be filled into the gap between the anchor rod and the rock mass through the grouting holes and grouting ports, thereby facilitating the improvement of the installation stability of the anchor rod. Attached Figure Description
[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0016] Figure 1 This is a schematic diagram of the structure of this utility model;
[0017] Figure 2 This is a structural diagram of the anchor bolt and anchor cable of this utility model in their disassembled state;
[0018] Figure 3 This is a schematic diagram of the anchor cable structure of this utility model;
[0019] Figure 4 This is a schematic diagram of the cross-sectional structure of the new anchor bolt in this utility model;
[0020] Figure 5 This is a cross-sectional view of the first positioning plate of this utility model.
[0021] In the diagram: 1. Anchor bolt; 2. Anchor cable; 3. Preload nut; 4. First support ring; 5. Second support ring; 6. First damping spring; 7. First cavity; 8. Buffer plate; 9. Buffer column; 10. First positioning plate; 11. Second damping spring; 12. First positioning slot; 13. Second positioning plate; 14. Second positioning slot; 15. Reset column; 16. Torsion spring; 17. Support cover; 18. Positioning block; 19. Grouting port; 20. Grouting hole. Detailed Implementation
[0022] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0023] like Figures 1-5As shown in the figure, this embodiment proposes an anti-scour and energy-absorbing anchor bolt 1 cable support structure, including an anchor bolt 1, an anchor cable 2, a preload nut 3, a buffer connection mechanism, and an anti-scour and energy-absorbing mechanism. The anchor cable 2 is set on one side of the anchor bolt 1. The anchor cable 2 cap is installed at one end of the anchor bolt 1. The preload nut 3 is installed on the anchor bolt 1 through threaded engagement. The buffer connection mechanism is set between the anchor bolt 1 and the anchor cable 2, which is used to install and fix the anchor bolt 1 and the anchor cable 2 and to buffer the anchor cable 2. The anti-scour and energy-absorbing mechanism is set on the anchor bolt 1, which is used to buffer and absorb energy between the anchor bolt 1 and the surrounding rock.
[0024] Reference Figure 1 and Figure 2 The anti-impact energy absorption mechanism includes a first support ring 4, a second support ring 5, and a first damping spring 6. The first support ring 4 and the second support ring 5 are fitted onto the anchor rod 1. Multiple first damping springs 6 are fixedly arranged between the first support ring 4 and the second support ring 5. Specifically, when an impact pressure occurs, the first damping springs 6 can quickly achieve large-scale compression deformation under the impact load, thereby consuming and reducing some of the impact energy, and ultimately playing a role in mitigating the impact load, thus preventing the anchor rod 1 from failing.
[0025] Reference Figures 2-5The buffer connection mechanism includes a first cavity 7, a buffer plate 8, a first positioning plate 10, a second damping spring 11, and a connecting assembly. The first cavity 7 is located inside the anchor rod 1, and a movable opening is provided at the end of the first cavity 7 near the anchor cable 2. The buffer plate 8 is slidably disposed within the first cavity 7, and a buffer post 9 is fixedly disposed on the buffer plate 8, extending through the movable opening and out of the anchor rod 1. The first positioning plate 10 is fixedly disposed at the end of the buffer post 9 away from the buffer plate 8. The second damping spring 11 is fixedly disposed between the buffer plate 8 and the side wall of the first cavity 7. The connecting assembly is disposed between the anchor cable 2 and the first positioning plate 10, and is used for installing the anchor cable 2 and the anchor rod 1. The connecting assembly includes a first positioning through groove 12, a reset groove, a second positioning plate 13, a support cover 17, and a positioning block 18. The side wall of the first positioning plate 10 has multiple first positioning through grooves 12, and the reset groove is disposed on the first positioning plate 10. The second positioning plate 13 is rotatably disposed on the first positioning plate 10, and the side wall of the second positioning plate 13 has multiple second positioning through grooves. 14. A reset post 15 is fixedly installed on the second positioning disk 13. The end of the reset post 15 away from the second positioning disk 13 is rotatably connected to the bottom of the reset groove. A torsion spring 16 is fitted on the side wall of the reset post 15. The two ends of the torsion spring 16 are fixedly connected to the bottom of the reset groove and the reset post 15, respectively. A support cover 17 is fixedly installed at the end of the anchor cable 2 near the anchor rod 1. The support cover 17 is adapted to the shape of the first positioning disk 10. A plurality of positioning blocks 18 are fixedly installed on the inner wall of the support cover 17 near the anchor rod 1. The positioning block 18 is fitted with rubber pads on its sidewalls to match the shapes of the first positioning through groove 12 and the second positioning through groove 14. Specifically, after the support cover 17 is fastened onto the first positioning plate 10 and the second positioning plate 13, the positioning block 18 can cooperate with the first positioning through groove 12 and the second positioning plate 13 to achieve the installation and fixation between the support cover 17 and the first positioning plate 10. At the same time, the second damping spring 11 can buffer the impact force on the anchor cable 2, thereby preventing the anchor cable 2 from breaking.
[0026] Reference Figure 4 An anchor rod 1 has a grouting port 19 at the end away from the anchor cable 2. The side wall of the anchor rod 1 has multiple grouting holes 20, which are connected to the grouting port 19. Specifically, mud can be filled into the gap between the anchor rod 1 and the rock mass through the grouting holes 20 and the grouting port 19, thereby facilitating the improvement of the installation stability of the anchor rod 1.
[0027] Working principle: In use, the operator first drills holes on the surrounding rock surface, with the hole diameter matching the size of anchor rod 1. Then, a second drilling is performed, with the hole diameter matching the size of anchor cable 2. Next, the operator inserts resin anchoring agent into the sidewall of the second drilled hole. Then, the operator inserts positioning block 18 into the second positioning slot 14 and rotates the support cover 17. This, through the cooperation of positioning block 18 and the second positioning slot 14, causes the second positioning disc 13 to rotate, aligning the first positioning slot 12 and the second positioning slot 14. Then, the operator presses the support cover 17, causing positioning block 18 to extend into the first positioning slot 12. At this time, the second positioning disc 13 is reset under the action of torsion spring 16. Thus, the cooperation of positioning block 18 with the first positioning slot 12 and the second positioning disc 13 respectively achieves the fixation between the first positioning disc 10 and the support cover 17. Finally, the operator inserts anchor cable 2 and anchor rod 1 through the two drilled holes. After the resin anchoring agent has cured, the operator places the first support ring 4 and the second support ring 5 onto the anchor rod 1 and tightens the locking nut, applying a preload to press the first support ring 4 against the surrounding rock surface. Then, the operator fills the gap between the anchor rod 1 and the rock mass through the grouting hole 20 and the grouting port 19, thereby improving the installation stability of the anchor rod 1. When a rockburst occurs, the deformation of the second damping spring 11 first absorbs energy, preventing the anchor cable 2 from breaking. Simultaneously, the deformation of the first support ring 4 against the surrounding rock foundation causes the first damping spring 6 to deform rapidly under impact load, further consuming and reducing impact energy. Through these two effective energy dissipations, the impact load is mitigated, thus preventing the anchor rod 1 and anchor cable 2 from failing and ensuring the safety and stability of the roadway.
[0028] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A shock-absorbing anchor bolt (1) cable support structure, comprising an anchor bolt (1), characterized in that, Also includes: Anchor cable (2), the anchor cable (2) is disposed on one side of the anchor rod (1), and the anchor cable (2) is attached to one end of the anchor rod (1) with an anchor cable (2) cap; Preload nut (3), the preload nut (3) is installed on the anchor rod (1) by thread engagement; A buffer connection mechanism is provided between the anchor rod (1) and the anchor cable (2) for installing and fixing the anchor rod (1) and the anchor cable (2) and for buffering the anchor cable (2); An anti-impact energy absorption mechanism is provided on the anchor rod (1) and is used to buffer and absorb energy between the anchor rod (1) and the surrounding rock.
2. The anti-impact energy-absorbing anchor (1) cable support structure according to claim 1, characterized in that, The shock-absorbing and energy-absorbing mechanism includes: The first support ring (4) and the second support ring (5) are fitted onto the anchor rod (1); A first damping spring (6) is fixedly disposed between the first support ring (4) and the second support ring (5).
3. The anti-impact energy-absorbing anchor (1) cable support structure according to claim 2, characterized in that, The buffer connection mechanism includes: The first cavity (7) is opened inside the anchor rod (1), and the first cavity (7) has a movable opening at one end near the anchor cable (2); A buffer plate (8) is slidably disposed in the first cavity (7). A buffer column (9) is fixedly disposed on the buffer plate (8). The buffer column (9) extends through the movable opening and out of the anchor rod (1). The first positioning disk (10) is fixedly disposed at the end of the buffer column (9) away from the buffer disk (8); The second damping spring (11) is fixedly disposed between the buffer plate (8) and the side wall of the first cavity (7); A connecting component is disposed between the anchor cable (2) and the first positioning plate (10) for installing the anchor cable (2) and the anchor rod (1).
4. The anti-impact energy-absorbing anchor (1) cable support structure according to claim 3, characterized in that, The connection component includes: The first positioning through groove (12) is provided on the side wall of the first positioning disk (10). A reset slot is provided on the first positioning plate (10); The second positioning disk (13) is rotatably mounted on the first positioning disk (10). The side wall of the second positioning disk (13) is provided with a plurality of second positioning through slots (14). A reset post (15) is fixedly mounted on the second positioning disk (13). The end of the reset post (15) away from the second positioning disk (13) is rotatably connected to the bottom of the reset slot. A torsion spring (16) is fitted on the side wall of the reset post (15). The two ends of the torsion spring (16) are fixedly connected to the bottom of the reset slot and the reset post (15) respectively. A support cover (17) is fixedly installed at one end of the anchor cable (2) near the anchor rod (1), and the support cover (17) is adapted to the shape of the first positioning plate (10); Positioning blocks (18): Multiple positioning blocks (18) are fixedly provided on one end of the inner wall of the support cover (17) near the anchor rod (1). The positioning blocks (18) are adapted to the shape of the first positioning through groove (12) and the second positioning through groove (14).
5. The anti-impact energy-absorbing anchor (1) cable support structure according to claim 4, characterized in that, The side wall of the positioning block (18) is fixedly provided with a rubber pad.
6. The anti-impact energy-absorbing anchor (1) cable support structure according to claim 5, characterized in that, The anchor rod (1) has a grouting port (19) at one end away from the anchor cable (2), and the side wall of the anchor rod (1) has a plurality of grouting holes (20), which are connected to the grouting port (19).