Resistance-increasing large-deformation anchor cable
By designing a large deformation anchor cable with increased resistance, the problem of anchor cable support in the large deformation and dynamic pressure disturbance zone was solved, achieving a stable support effect and adapting to the large deformation and dynamic pressure disturbance of the surrounding rock in the roadway.
Patent Information
- Application Number
- CN202520409866.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-11
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-11
AI Technical Summary
Existing anchor cables fail due to large deformations in the surrounding rock of roadways caused by increased depth in underground coal mines, and cannot effectively resist dynamic pressure disturbances in the goaf of thick and extra-thick coal seams, posing safety hazards.
The high-deformation resistance anchor cable is adopted, which includes steel strands, high-deformation resistance components and locking devices. Through the design of the tapered sleeve and locking devices, the locking devices can move within the tapered sleeve, gradually increasing the support resistance, adapting to the large deformation of the roadway, and providing continuous support in the dynamic pressure disturbance zone.
It enhances the adaptability of anchor cables, avoids failure due to large deformation, and provides stable support in the dynamic pressure disturbance zone, reducing safety hazards.
Smart Images
Figure CN223676304U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to roadway support technical field, specifically, the utility model relates to a resistance increasing large deformation anchor cable. BACKGROUND
[0002] Anchor cable is widely used in the support of underground engineering, especially in underground coal mining, a large number of anchor cables are needed to support the mining roadway. However, with the increasing depth of current underground coal mining, the increase of ground stress leads to large deformation of roadway surrounding rock. The ordinary anchor cable currently used can only adapt to small deformation because its steel strand has only 3% elongation. The constant resistance anchor cable on the market can well adapt to large deformation of roadway, but when the deformation reaches its designed length, the constant resistance large deformation anchor cable will fail immediately, which will increase the risk of roof fall of the roadway roof and has great safety hazards. In addition, when the retained roadway is affected by the dynamic pressure disturbance of the overburden collapse of the goaf behind the working face during the use of the automatic roadway-forming technology by cutting the roof and releasing pressure in thick and extra-thick coal seams, the ordinary constant resistance large deformation anchor cable fails more, so single hydraulic props are needed for temporary support in the dynamic pressure disturbance area.
[0003] The conventional ordinary anchor cable cannot adapt to large deformation, and the current constant resistance large deformation anchor cable fails immediately when it reaches its designed deformation, and its supporting resistance cannot resist the large dynamic pressure disturbance behind the working face. SUMMARY
[0004] Therefore, the utility model provides a resistance increasing large deformation anchor cable, so as to solve or at least alleviate the above problems existing in the prior art.
[0005] In order to achieve the foregoing purpose, the utility model provides a resistance increasing large deformation anchor cable, which comprises a steel strand, a resistance increasing large deformation assembly, a tray and a lock; the resistance increasing large deformation assembly comprises a conical sleeve, the conical sleeve can be inserted into the tray, the steel strand can pass through the inside of the conical sleeve, the inside of the conical sleeve is trapezoidal, one end of the conical sleeve with a smaller inner diameter is in contact with the outer wall of the steel strand, and the lock is arranged at one end of the conical sleeve with a larger inner diameter.
[0006] In the resistance increasing large deformation anchor cable as described above, the lock can be trapezoidal, the lock is inserted into one end of the conical sleeve with a larger inner diameter, and the lock can be in contact with the outer wall of the steel strand.
[0007] In the large deformation anchor cable of increasing resistance as described above, optionally, the lock is slidingly installed in the larger end of the conical sleeve, a moving ring is slidingly installed on the inner wall of the larger end of the conical sleeve, an annular cavity is formed in the inside of the moving ring, a positioning ring is rotatably installed in the annular cavity, and the lock is slidingly installed on the outer wall of the moving ring.
[0008] In the large deformation anchor cable of increasing resistance as described above, optionally, a limiting block is fixedly installed on the side of the moving ring close to the conical sleeve, a first groove is formed in the end of the lock facing the moving ring, the limiting block is slidingly installed in the first groove, and a first spring is fixedly installed between the limiting block and the first groove.
[0009] In the large deformation anchor cable of increasing resistance as described above, optionally, a sliding groove is formed in the outer wall of the moving ring, and a sliding block is fixedly installed on the inner wall of the larger end of the conical sleeve and slidingly installed in the sliding groove.
[0010] In the large deformation anchor cable of increasing resistance as described above, optionally, a positioning groove is formed in the positioning ring, the positioning groove is in contact with the outer wall of the steel strand, a tooth is fixedly installed on the outer wall of the positioning ring, the tooth is arranged in the annular cavity, a stabilizing ring is fixedly installed on the two side faces of the positioning ring, and the outer wall of the stabilizing ring is in contact with the inner wall of the moving ring.
[0011] In the large deformation anchor cable of increasing resistance as described above, optionally, a second groove is formed in the annular cavity, a ratchet is rotatably installed in the inside of the second groove, and a second spring is fixedly installed between the ratchet and the second groove.
[0012] The large deformation anchor cable of increasing resistance of the utility model adopts the conical sleeve inserted into the inside of the tray, the steel strand is inserted into the hole, the steel strand is fixed in the conical sleeve, the problem of the large deformation anchor cable failure with the roadway surrounding rock is not worried, and the lock of the anchor cable is moved into the conical sleeve and the supporting resistance is gradually increased with the large deformation of the roadway surrounding rock. BRIEF DESCRIPTION OF DRAWINGS
[0013] The disclosure of the utility model will be more apparent with reference to the drawings. It should be understood that these drawings are only for the purpose of illustration, and are not intended to limit the scope of protection of the utility model. In the drawings:
[0014] Figure 1 It is a structural schematic view of the embodiment one of the utility model.
[0015] Figure 2 It is the cross section view of the resistance increasing and large deformation assembly of the embodiment one of the utility model.
[0016] Figure 3 It is the cross section view of the lock of the embodiment one of the utility model.
[0017] Figure 4 It is the structure schematic view of the embodiment two of the utility model.
[0018] Figure 5 It is the cross section view of the conical sleeve of the embodiment two of the utility model.
[0019] Figure 6 It is the structure schematic view of the moving ring of the embodiment two of the utility model.
[0020] Figure 7 It is the cross section view of the moving ring of the embodiment two of the utility model.
[0021] Figure 8 It is the connection structure schematic of the limiting block and the lock of the embodiment two of the utility model.
[0022] The figure mark: 1 - steel strand;2 - resistance increasing and large deformation assembly;201 - conical sleeve;202 - sliding block;3 - tray;4 - lock;401 - first recess, 402 - first spring;5 - moving ring;501 - annular cavity;502 - second recess;503 - ratchet;504 - second spring;505 - limiting block;506 - sliding slot;6 - positioning ring;601 - positioning groove;602 - tooth;603 - stabilizing ring. DETAILED DESCRIPTION
[0023] The technical scheme in the embodiments of the utility model will be described clearly and completely below, obviously, the described embodiments are only a part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without making creative labor are within the protection scope of the utility model.
[0024] As Figures 1 to 3 Shown in the embodiment one, a resistance increasing and large deformation anchor cable, comprising: steel strand 1, resistance increasing and large deformation assembly 2, tray 3 and lock 4;Resistance increasing and large deformation assembly 2 includes conical sleeve 201, the conical sleeve 201 can be inserted in tray 3 inside, steel strand 1 can pass through the inside of conical sleeve 201, the inside of conical sleeve 201 is set as trapezoidal, the smaller end of the inside diameter of conical sleeve 201 is in contact with the outer wall of steel strand 1, and lock 4 is arranged at the larger end of the inside diameter of conical sleeve 201.
[0025] In use, the tapered sleeve is connected at the end of the steel strand 1, when the anchor cable is constructed, first install the steel strand 1 in the anchor cable drill hole, then install the tapered sleeve and pass through the tray 3, and finally lock the steel strand 1 using the lock 4;
[0026] When the anchor cable is drilled, the steel strand 1 passes through the hole and moves the tapered sleeve 201, when the tapered sleeve 201 moves, it can drive the tray 3 to move towards the roadway, when the tray 3 contacts the roadway, the steel strand 1 continues to move, so that the lock 4 moves towards the inside of the tapered sleeve 201, the lock 4 is pressed by the trapezoidal slope inside the tapered sleeve 201, so that the lock 4 tightly clamps the steel strand 1 and drives the tapered sleeve 201 to move towards the tray 3, so that the tapered sleeve 201 and the tray 3 are tightly fitted, without worrying about the problem of anchor cable failure with large deformation of the surrounding rock of the roadway, and with large deformation of the surrounding rock of the roadway, the lock 4 of the anchor cable will move towards the inside of the tapered sleeve 201, and the supporting resistance will gradually increase, which is beneficial to the use of the automatic roadway forming technology for cutting and pressure relief of thick and extra-thick coal seam working face, and the retained roadway behind the working face can withstand the strong dynamic pressure disturbance of the thick and extra-thick coal seam working face goaf.
[0027] The lock 4 is trapezoidal, and the lock 4 is inserted into the end with a larger inner diameter of the tapered sleeve 201, and the lock 4 can contact the outer wall of the steel strand 1.
[0028] The trapezoidal lock 4 can tightly clamp the steel strand 1 when the lock 4 moves inside the tapered sleeve 201, and fix the steel strand 1 in the tapered sleeve 201.
[0029] As shown in Figures 4 to 8 In the second embodiment, the lock 4 is slidingly installed in the end with a larger inner diameter of the tapered sleeve 201, the end with a larger inner diameter of the tapered sleeve 201 has a moving ring 5 slidingly installed on the inner wall, the moving ring 5 has an annular cavity 501 formed in the inside, the annular cavity 501 has a positioning ring 6 rotatably installed inside, and the lock 4 is slidingly installed on the outer wall of the moving ring 5.
[0030] In use, the tapered sleeve 201 is passed through the end of the steel strand 1, so that the end of the steel strand 1 passes through the end with a smaller inner diameter of the tapered sleeve 201 and the end with a larger inner diameter of the tapered sleeve 201 in turn, and the steel strand 1 passes through the positioning ring 6, and the steel strand 1 moves towards the hole when the steel strand 1 passes through the hole;
[0031] When the steel strand 1 continues to move, the steel strand 1 drives the moving ring 5 to move in the tapered sleeve 201, so that the moving ring 5 drives the lock 4 to move, the lock 4 is extruded by the trapezoidal slope inside the tapered sleeve 201, at this time the lock 4 can tightly clamp the steel strand 1, and drive the tapered sleeve 201 to move towards the tray 3, when the tapered sleeve 201 is tightly attached to the tray 3, the tapered sleeve 201 is fixedly installed on the roadway.
[0032] The side of the moving ring 5 close to the tapered sleeve 201 is fixedly installed with a limiting block 505, the end of the lock 4 towards the moving ring 5 is provided with a first groove 401, the limiting block 505 is slidingly installed in the first groove 401, and a first spring 402 is fixedly installed between the limiting block 505 and the first groove 401.
[0033] When the moving ring 5 moves, the limiting block 505 can be driven to move, so that the limiting block 505 drives the lock 4 to move, when the lock 4 is extruded by the trapezoidal slope inside the tapered sleeve 201, the lock 4 is radially displaced, and the first spring 402 is stretched;
[0034] When the first spring 402 is not forced to reset, the first spring 402 drives the lock 4 to move away from the steel strand 1, and unlocks the steel strand 1, so that the steel strand 1 can be taken out of the tapered sleeve 201.
[0035] The outer wall of the moving ring 5 is provided with a sliding groove 506, and the inner wall of the end of the tapered sleeve 201 with a larger diameter is fixedly installed with a sliding block 202, and the sliding block 202 is slidingly installed in the sliding groove 506.
[0036] When the moving ring 5 moves, the sliding block 202 slides in the sliding groove 506, so that the moving ring 5 does not rotate, and the lock 4 can stably clamp the outer wall of the steel strand 1, and the lock 4 is extruded by the trapezoidal slope inside the tapered sleeve 201, so that the steel strand 1 is fixedly installed in the tapered sleeve 201.
[0037] The positioning ring 6 is provided with a positioning groove 601, the positioning groove 601 is attached to the outer wall of the steel strand 1, the outer wall of the positioning ring 6 is fixedly installed with a tooth 602, the tooth 602 is arranged in the annular cavity 501, and the two side surfaces of the positioning ring 6 are fixedly installed with a stabilizing ring 603, and the outer wall of the stabilizing ring 603 is in contact with the inner wall of the moving ring 5.
[0038] When the steel strand 1 passes through the positioning groove 601, the positioning groove 601 slides along the outer wall of the steel strand 1 and rotates, so that the steel strand 1 can pass through the positioning ring 6, the positioning groove 601 drives the positioning ring 6 to rotate when rotating, the tooth 602 slides in the annular cavity 501, at this time, the stabilizing ring 603 rotates in the moving ring 5, so that the positioning ring 6 can rotate at the center, and when the lock 4 clamps the steel strand 1, the steel strand 1 can be located at the axis of the tapered sleeve 201.
[0039] The second recess 502 is internally rotatably installed with a ratchet tooth 503, and the ratchet tooth 503 and the second recess 502 are fixedly installed with a second spring 504.
[0040] When the tooth 602 rotates in the annular cavity 501, the inclined surface of the tooth 602 can push the ratchet tooth 503 to rotate and compress the second spring 504, at this time, the ratchet tooth 503 is accommodated in the second recess 502, so that when the steel strand 1 passes through the positioning ring 6, the positioning ring 6 can be sleeved on the steel strand 1 along the outer wall of the steel strand 1 by rotating the positioning ring 6;
[0041] When the positioning ring 6 is installed on the steel strand 1, the steel strand 1 continues to move into the hole, and since the ratchet tooth 503 is in contact with the plane of the tooth 602, the ratchet tooth 503 is limited by the second recess 502, so that the ratchet tooth 503 cannot rotate, and the positioning ring 6 is locked in the moving ring 5, at this time, the steel strand 1 continues to move, driving the positioning ring 6 to move, the positioning ring 6 drives the moving ring 5 to move in the tapered sleeve 201, so that the moving ring 5 drives the lock 4 to move, the lock 4 is pressed by the trapezoidal inclined surface inside the tapered sleeve 201, so that the lock 4 tightly clamps the steel strand 1, and drives the tapered sleeve 201 to move towards the tray 3, so that the tapered sleeve 201 tightly fits with the tray 3, and the tapered sleeve 201 is fixedly installed on the roadway.
[0042] Compared with the first embodiment, the lock 4 and the tapered sleeve 201 are integrated in the second embodiment, and the lock 4 moves in the tapered sleeve 201 at the same time, and the lock 4 can clamp the steel strand 1 synchronously, this way of fixing the steel strand 1 can prevent the steel strand 1 from deviating during clamping, and through the positioning ring 6, the steel strand 1 is always on the axis of the tapered sleeve 201, so that the tapered sleeve 201 can bear force more evenly, and the anti-interference effect is better.
[0043] The technical scope of the present application is not limited to the above description, and those skilled in the art can make various modifications and changes to the above embodiments without departing from the technical concept of the present application, and these modifications and changes should be within the scope of the present application.
Claims
1. A resistance-increasing large deformation anchor cable, characterized by Include: Steel strand (1), resistance to large deformation assembly (2), tray (3) and lock (4); The resistance to large deformation assembly (2) includes a tapered sleeve (201), the tapered sleeve (201) can be inserted inside the tray (3), the steel strand (1) can pass through the inside of the tapered sleeve (201), the inside of the tapered sleeve (201) is trapezoidal, the smaller end of the tapered sleeve (201) is in contact with the outer wall of the steel strand (1), and the lock (4) is arranged at the larger end of the tapered sleeve (201).
2. A high deformation resistance anchoring cable according to claim 1, characterized in that, The lock (4) is trapezoidal, the lock (4) is inserted into the larger end of the tapered sleeve (201), and the lock (4) can be in contact with the outer wall of the steel strand (1).
3. A high deformation resistance anchoring cable according to claim 1, characterized in that, The lock (4) is slidingly installed in the larger end of the tapered sleeve (201), the larger end of the tapered sleeve (201) is slidingly installed with a moving ring (5), an annular cavity (501) is formed in the inside of the moving ring (5), a positioning ring (6) is rotatably installed in the annular cavity (501), and the lock (4) is slidingly installed on the outer wall of the moving ring (5).
4. A high deformation resistance anchoring cable according to claim 3, wherein, The side of the moving ring (5) close to the tapered sleeve (201) is fixedly installed with a limiting block (505), one end of the lock (4) close to the moving ring (5) is provided with a first groove (401), the limiting block (505) is slidingly installed in the first groove (401), and a first spring (402) is fixedly installed between the limiting block (505) and the first groove (401).
5. A high deformation resistance anchoring cable according to claim 4, characterized in that, A sliding groove (506) is formed in the outer wall of the moving ring (5), and a sliding block (202) is fixedly installed on the inner wall of the larger end of the tapered sleeve (201), and the sliding block (202) is slidingly installed in the sliding groove (506).
6. A high deformation resistance anchoring cable according to claim 4, characterized in that, A positioning groove (601) is formed in the positioning ring (6), the positioning groove (601) is in contact with the outer wall of the steel strand (1), a tooth (602) is fixedly installed on the outer wall of the positioning ring (6), the tooth (602) is arranged in the annular cavity (501), and a stabilizing ring (603) is fixedly installed on the two side faces of the positioning ring (6), the outer wall of the stabilizing ring (603) is in contact with the inner wall of the moving ring (5).
7. A high deformation resistance anchoring cable according to claim 6, characterized in that, A second groove (502) is formed in the annular cavity (501), a ratchet (503) is rotatably installed in the inside of the second groove (502), and a second spring (504) is fixedly installed between the ratchet (503) and the second groove (502).