Anchor cable unanchoring device, anchor cable assembly and unanchoring method

Abstract

The present disclosure relates to an anchor cable unanchoring device, an anchor cable assembly and an unanchoring method. The anchor cable unanchoring device is used for an anchor cable structure, the anchor cable structure comprises an anchor cable, a lock core, a lock sleeve and a sleeve ring, one end of the anchor cable is connected to a rock mass, the other end of the anchor cable extends outward, the lock core is sleeved around the circumference of the anchor cable, the lock sleeve comprises at least two lock sleeve blocks and is sleeved around the circumference of the lock core, the sleeve ring is sleeved around the circumference of the lock sleeve and is used for fastening the lock sleeve, so that the lock sleeve clamps the anchor cable in cooperation with the lock core; the anchor cable unanchoring device comprises a dismounting rod and a driving piece, the first matching part is arranged on the dismounting rod and is used for detachably connecting the sleeve ring, the driving piece is arranged at one end of the dismounting rod away from the anchor cable structure and is used for driving the dismounting rod to drive the sleeve ring to move in a first direction to unlock the lock sleeve. The technical scheme provided by the present disclosure can effectively improve the unanchoring efficiency, reduce the labor cost and improve the safety of the dismounting process.

Description

Technical Field

[0001] This disclosure relates to the field of mining equipment technology, and more specifically, to an anchor cable unanchoring device, an anchor cable assembly, and an unanchoring method. Background Technology

[0002] In coal mine roadway support, anchor cables are a commonly used, safe, and efficient support device. Anchor cables are mainly made of high-strength, low-relaxation steel strands, providing strong prestress and anchoring, thereby reducing the dangers caused by rock mass deformation. To ensure that the prestressing tension of the anchor cable acts on the rock mass, anchorages are usually used to pre-tighten the anchor cable, and the removal of the anchorages requires an anchor cable unwinding device.

[0003] The existing method for removing anchors involves connecting the pre-tensioned anchor cable to a release jack. The tensioning of the release jack causes the anchor's locking core to disengage, thus dismantling the anchor. However, if the exposed length of the anchor cable is insufficient to install the release jack, this process cannot be performed, and the anchor must be destroyed and removed. Summary of the Invention

[0004] The purpose of this disclosure is to provide an anchor cable unanchoring device, anchor cable assembly, and unanchoring method that can quickly unanchor the cable, thereby at least partially solving the aforementioned technical problems.

[0005] To achieve the above objectives, this disclosure provides an anchor cable unanchoring device for an anchor cable structure. The anchor cable structure includes an anchor cable, a locking core, a locking sleeve, and a collar. One end of the anchor cable is connected to the rock mass, and the other end extends outward. The locking core is sleeved around the anchor cable. The locking sleeve includes at least two locking sleeve blocks and is sleeved around the locking core. The collar is sleeved around the locking sleeve and is used to fasten the locking sleeve, so that the locking sleeve and the locking core cooperate to clamp the anchor cable.

[0006] The anchor cable unanchoring device includes a disassembly rod and a driving component. The disassembly rod is provided with a first mating part for detachably connecting the collar. The driving component is provided at one end of the disassembly rod away from the anchor cable structure and is used to drive the disassembly rod to move the collar along a first direction to unlock the locking sleeve.

[0007] Optionally, the collar is provided with a second mating part for engaging with the first mating part.

[0008] Optionally, the first mating part is constructed as a first mating surface, and the second mating part is constructed as a second mating surface.

[0009] Optionally, the anchor cable unanchoring device further includes a receiving housing for surrounding the anchor cable structure and having an opening, the bottom of the receiving housing having a first through hole for the dismantling rod to pass through, and the driving member being configured as a telescopic hydraulic top located outside the receiving housing; the two ends of the telescopic hydraulic top are respectively connected to the dismantling rod and the receiving housing.

[0010] Optionally, a first stop is provided on the side of the first through hole away from the receiving housing, and the first stop is connected to the disassembly rod.

[0011] Optionally, the outer side walls of the housing on both opposite sides along the second direction are provided with anti-fall lugs.

[0012] Optionally, the housing is provided with reinforcing ribs connected to the side wall and bottom wall of the housing.

[0013] Optionally, the anchor cable unanchoring device further includes a support plate, the driving member is mounted on the support plate, the support plate has a second through hole for accommodating the dismantling rod, a second stop is provided on the side of the second through hole away from the driving member, the second stop is connected to the dismantling rod, and the driving member is located between the receiving housing and the support plate.

[0014] According to a second aspect of this disclosure, an anchor cable assembly is also provided, including the aforementioned anchor cable retraction device.

[0015] According to a third aspect of this disclosure, a method for unanchoring is also provided, the method comprising the following steps:

[0016] Connect the first mating part of the disassembly rod to the collar;

[0017] Install the housing, turn the first stop to stop at the bottom of the housing, and connect the anti-fall lugs of the housing to the top plate mesh;

[0018] Install the support plate, and turn the second stop of the knob to stop at the bottom of the support plate;

[0019] The drive unit is installed on the support plate and abuts against the housing.

[0020] Start the drive unit, set the preset pressure, the drive unit drives the disassembly rod and drives the collar to move in the first direction to disengage from the locking sleeve, and the disassembly is completed.

[0021] Through the above technical solution, the anchor cable unloading device disclosed herein is used to fit a collar onto the outer wall of the lock sleeve, so that the lock sleeve and the lock core cooperate to pre-tighten the anchor cable structure. During disassembly, a driving component causes the disassembly rod to move the collar along a first direction, thereby achieving the separation of the lock sleeve and the anchor cable. This effectively improves the unloading efficiency, reduces labor costs, and enhances the safety of the disassembly process.

[0022] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a cross-sectional schematic diagram of the overall structure of the anchor cable structure and the anchor cable unanchoring device provided in the exemplary embodiments of this disclosure;

[0025] Figure 2 This is a cross-sectional schematic diagram of the overall structure of the anchor cable unanchoring device provided in the exemplary embodiments of this disclosure;

[0026] Figure 3 This is a cross-sectional schematic diagram of the overall structure of the anchor cable structure provided in the exemplary embodiments of this disclosure;

[0027] Figure 4 This is a schematic cross-sectional view of the overall structure of the housing provided in an exemplary embodiment of this disclosure;

[0028] Figure 5 This is a top view of the housing provided in an exemplary embodiment of this disclosure;

[0029] Figure 6 This is a top view of the support plate provided in an exemplary embodiment of this disclosure;

[0030] Figure 7 This is a cross-sectional view of the disassembly rod provided in an exemplary embodiment of this disclosure.

[0031] Explanation of reference numerals in the attached figures

[0032] 101. Lock sleeve; 102. Collar; 103. Lock cylinder; 112. Second mating part; 2. Disassembly rod; 210. First stop; 220. Second stop; 230. First mating part; 3. Housing housing; 310. Anti-fall lug; 320. Reinforcing rib; 330. First through hole; 340. Opening; 4. Driving component; 5. Support plate; 510. Second through hole; 6. Anchor cable; 7. Tray; 8. Rock mass. Detailed Implementation

[0033] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0034] In this disclosure, unless otherwise stated, "inner" and "outer" refer to the inner and outer contours of the corresponding components. Furthermore, the terms "first" and "second" used in this disclosure are for distinguishing one element from another and are not sequential or significant. In addition, when the following description relates to the accompanying drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements.

[0035] according to Figures 1 to 7 As shown, an embodiment of this disclosure provides an anchor cable unanchoring device for disassembling an anchor cable structure used to provide prestress to the rock mass. Specifically, the anchor cable structure includes an anchor cable 6, a locking core 103, a locking sleeve 101, and a collar 102. One end of the anchor cable 6 is connected to the rock mass 8, and the other end extends outward. The locking core 103 is fitted around the anchor cable 6. The locking sleeve 101 includes at least two locking sleeve blocks and is fitted around the locking core 103. The collar 102 is fitted around the locking sleeve 101 and is used to fasten the locking sleeve 101, so that the locking sleeve 101 and the locking core 103 cooperate to clamp the anchor cable 6. It should be noted that after the locking sleeve 101, locking core 103, and collar 102 are installed, the anchor cable needs to be connected to the rock mass 8. The anchor cable 6 is tensioned by the jack, which drives the lock core 103 to move continuously toward the inner hole of the collar 102 so that the anchor cable 6 can provide prestress to the rock mass 8. The anchor cable unanchoring device includes a disassembly rod 2 and a driving component 4. The disassembly rod 2 is provided with a first mating part 230, which is used to detachably connect the collar 102. The driving component 4 is provided at the end of the disassembly rod 2 away from the anchor cable structure. The driving component 4 is used to drive the disassembly rod 2 to move the collar 102 along the first direction X to unlock the locking sleeve 101 and realize the rapid separation of the locking sleeve 101 from the anchor cable 6.

[0036] Through the above technical solution, the anchor cable unanchoring device disclosed herein can quickly separate the locking sleeve 101 from the anchor cable 6. The disassembly rod 2 driven by the driving component 4 moves the collar 102 along the first direction X, which can effectively improve the unanchoring efficiency, reduce labor costs and improve the safety of the disassembly process.

[0037] The inner hole of the lock sleeve 101 can be constructed as a tapered hole, and the lock core 103 can be constructed as a tapered surface adapted to the tapered hole. The inner diameter of the lock sleeve 101 is larger than the diameter of the anchor cable 6, so that the anchor cable 6 can pass through the lock sleeve 101 and extend along the first direction X. The inner diameter of the lock sleeve 101 is large enough to accommodate the anchor cable 6 and the lock core 103, so that the lock core 103 can be inserted into the gap between the lock sleeve 101 and the anchor cable 6, thereby pre-tightening the anchor cable 6.

[0038] The construction of the lock cylinder 103 can be adapted to actual conditions. For example, the lock cylinder 103 can be constructed to include multiple cylinder blocks, which can be inserted into the inner hole of the lock sleeve 101 and arranged circumferentially along the anchor cable 6. The multiple cylinder blocks can also be constructed as conical surfaces with grooves for connecting to the tightening collar, so that the multiple cylinder blocks can be detachably connected. This disclosure does not make specific limitations in this regard.

[0039] It should be noted that the anchor cable structure may also include a tray 7. The tray 7 is connected to the anchor cable 6 and is located between the rock mass 8 and the locking sleeve 101. The tray 7 can be fixedly connected to the anchor cable 6 by bolts to enhance the prestress of the anchor cable 6 on the rock mass 8.

[0040] The construction of disassembly lever 2 can be adapted to suit specific circumstances, for example, by referring to... Figure 7 As shown, the disassembly rod 2 can be constructed as a T-shaped rod. This disclosure does not specifically limit it in this way, as long as its function can be achieved.

[0041] The number of disassembly rods 2 can be adjusted according to actual conditions. There can be multiple disassembly rods 2, for example, two, three, or four. Multiple disassembly rods 2 are arranged around the circumference of the collar 102 to ensure that the collar 102 is subjected to uniform force in the circumferential direction, which facilitates the disassembly of the collar 102. This disclosure does not make specific limitations in this regard.

[0042] To facilitate the separation of the collar 102 and the locking sleeve 101, in some feasible embodiments, refer to Figure 2 and Figure 3 As shown, the collar 102 may be provided with a second mating part 112 for mating with the first mating part 230. For example, the first mating part 230 may be constructed as a first mating surface, and the second mating part 112 may be constructed as a second mating surface. The first mating surface and the second mating surface correspond to each other, so that the disassembly rod 2 can drive the collar 102 to move along the first direction X under the action of the driving member 4, thereby realizing the separation of the collar 102 and the locking sleeve 101.

[0043] The structural limitations of the first mating part 230 and the second mating part 112 in this disclosure are only for the purposes of this disclosure. The first mating part 230 and the second mating part 112 can be adapted to the actual situation. For example, the first mating part 230 can be constructed as a plug rod, and the second mating part 112 can be constructed as a socket. The above-mentioned disassembly effect can be achieved by the snap-fit ​​engagement of the plug rod and the socket. This disclosure does not make specific limitations in this regard.

[0044] To facilitate the recovery of the disassembled anchor cable structure and prevent the collar 102 from being ejected and causing injury during disassembly due to excessive force when separating from the locking sleeve 101, in some feasible embodiments, for example, the anchor cable unanchoring device may also include a housing 3 for surrounding the anchor cable structure and having an opening 340. The bottom of the housing 3 has a first through hole 330 for the disassembly rod 2 to pass through. The driving member 4 is constructed as a telescopic hydraulic top located on the outside of the housing 3, with both ends of the telescopic hydraulic top connected to the disassembly rod 2 and the housing 3, respectively.

[0045] The construction of the driving component 4 described in this disclosure is only for the purposes of this disclosure. The construction of the driving component 4 can be adapted to the actual situation. For example, the driving component 4 can also be constructed as a tensioning jack. This disclosure does not make specific limitations in this regard, as long as its function can be achieved.

[0046] To prevent the housing 3 from falling during installation or use, in some possible implementations, for example, refer to Figure 1 As shown, the outer side walls of the housing 3 on both sides along the second direction Y can be provided with anti-fall ears 310. The anti-fall ears 310 are used to connect to the top plate mesh to enhance the stability and safety of the housing 3.

[0047] To further secure the housing 3 and prevent it from separating from the disassembly rod 2, in some feasible ways, for example, refer to Figure 1 and Figure 2 As shown, a first stop 210 is provided on the side of the first through hole 330 away from the housing 3, and the first stop 210 is connected to the disassembly rod 2.

[0048] To increase the load-bearing strength of the housing 3, in some feasible ways, for example, refer to Figure 1 , Figure 2 , Figure 5 and Figure 4 As shown, the housing 3 may be provided with reinforcing ribs 320 connected to the side wall and bottom wall of the housing 3.

[0049] The structural limitations of the housing shell in this disclosure are only for the purposes of this disclosure. The structure of the housing shell 3 can be adapted to actual conditions. For example, the housing shell 3 can also be constructed as a cylindrical structure with multiple internal support columns, which abut against the tray 7 or the rock mass 8 to increase the support strength and make the housing shell 3 more stable under stress. This disclosure does not make specific limitations in this regard, as long as its function can be achieved.

[0050] To reduce wear on disassembly rod 2, in some feasible ways, for example, refer to Figure 1 and Figure 2As shown, the anchor cable unanchoring device may also include a support plate 5, a driving member 4 mounted on the support plate 5, a second through hole 510 for accommodating the dismantling rod 2, a second stop 220 provided on the side of the second through hole 510 away from the driving member 4, the second stop 220 connected to the dismantling rod 2, the second stop 220 used to prevent the support plate 5 from separating from the dismantling rod 2, the driving member 4 located between the housing 3 and the support plate 5, so that the driving member 4 can act on the support plate 5 to drive the dismantling rod 2 to move.

[0051] The construction of the first stop 210 and the second stop 220 can be adapted to the actual situation. For example, the first stop 210 and the second stop 220 can be constructed as bolts. This disclosure does not make specific limitations in this regard.

[0052] The number of the first through hole 330 and the second through hole 510 can be adjusted according to actual conditions. For example, the number of the first through hole 330 and the second through hole 510 can correspond to the number of the disassembly rod 2 to facilitate installation and disassembly. This disclosure does not make specific limitations in this regard.

[0053] A second aspect of this disclosure also provides an anchor cable assembly, including an anchor cable structure and the aforementioned anchor cable retraction device;

[0054] To ensure the tightness of the collar 102 to the locking sleeve 101, in some feasible methods, for example, refer to Figure 3 As shown, the outer wall of the locking sleeve 101 can be constructed as a columnar structure, and the inner hole of the collar 102 can be constructed as a columnar hole corresponding to the columnar structure. Through the mutual correspondence between the outer wall of the locking sleeve 101 and the inner hole of the collar 102 in construction, the collar 102 can be seamlessly fitted to the circumference of the locking sleeve 101, thereby ensuring that the locking sleeve block of the locking sleeve 101 will not be loose and fall off during the installation and disassembly of the anchor cable structure, thus improving the safety of the installation and disassembly process.

[0055] To facilitate the disassembly and installation of the collar 102, in some feasible ways, for example, refer to Figure 3 As shown, the axial thickness of the collar 102 can be less than the axial thickness of the locking sleeve 101, so that the collar 102 has a space for disassembly on the side of the rock mass 8 in the first direction X, so that a force can be applied to the plane of the collar 102 on the side of the rock mass 8 within this space, thereby realizing the separation of the collar 102 and the locking sleeve 101.

[0056] The anchor cable assembly has all the beneficial effects of the aforementioned anchor cable retraction device, which will not be repeated here.

[0057] A third aspect of this disclosure provides a method for unanchoring using the second aspect of this disclosure, the method comprising the following steps:

[0058] The first mating part 230 of the disassembly rod 2 is connected to the collar 102;

[0059] Install the housing 3, with the first stop 210 of the knob stopping at the bottom of the housing 3, and connect the anti-fall hanging ear 310 of the housing 3 to the top plate mesh;

[0060] Install support plate 5, and the second stop part 220 of the knob stops at the bottom of support plate 5;

[0061] The drive component 4 is installed on the support plate 5 and abuts against the housing 3;

[0062] Start the drive unit 4, set the preset pressure, drive the disassembly rod 2 and drive the collar 102 to move along the first direction X to disengage from the locking sleeve 101, and complete the disassembly.

[0063] The following embodiments illustrate the apparatus and method of this disclosure. For example, during installation, the locking sleeve block is circumferentially butted together along the central axis of the anchor cable 6 and fixed by the collar 102. The lock core 103 is inserted into the gap between the locking sleeve 101 and the anchor cable 6, and a jack is connected to the anchor cable 6. By tensioning the anchor cable 6 with the jack, the lock core 103 and the locking sleeve 101 are fully engaged, thereby achieving pre-tightening of the anchor cable 6. During disassembly, the first mating part 230 of the disassembly rod 2 is connected to the second mating part 112 of the collar 102. The housing 3 is sleeved on the locking sleeve 101 and the disassembly rod 2 along the end of the disassembly rod 2 away from the first mating part 230. The anti-fall lug 310 of the housing 3 is connected to the top plate mesh, so that... The housing 3 is initially fixed, and the first stop 210 of the knob stops at the bottom of the housing 3 to further fix the housing 3. The support plate 5 is installed, and the second stop 220 of the knob stops at the bottom of the support plate 5, so that the support plate 5 cannot be separated from the disassembly rod 2. The drive 4 is installed on the support plate 5, and the drive 4 is located between the support plate 5 and the housing 3. The pressure value is preset and the drive 4 is started, so that the drive 4 extends and retracts in the direction of the support plate 5, thereby driving the disassembly rod 2 to move along the first direction X. In this way, the collar 102 connected to the disassembly rod 2 moves at the same time as the disassembly rod 2 moves. The collar 102 gradually separates from the locking sleeve 101, and the locking sleeve block falls into the housing 3, completing the disassembly.

[0064] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0065] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0066] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An anchor cable retraction device for use in anchor cable structures, characterized in that, The anchor cable structure includes: an anchor cable, a lock core, a lock sleeve, and a collar. One end of the anchor cable is connected to the rock mass, and the other end extends outward. The lock core is sleeved around the anchor cable. The lock sleeve includes at least two lock sleeve blocks and is sleeved around the lock core. The collar is sleeved around the lock sleeve and is used to fasten the lock sleeve so that the lock sleeve and the lock core cooperate to clamp the anchor cable. The anchor cable unanchoring device includes: a disassembly rod and a driving component. The disassembly rod is provided with a first mating part, which is used to detachably connect the collar. The driving component is provided at one end of the disassembly rod away from the anchor cable structure and is used to drive the disassembly rod to move the collar along a first direction to unlock the locking sleeve. The anchor cable unanchoring device further includes a receiving housing for surrounding the anchor cable structure and having an opening, the bottom of the receiving housing having a first through hole for the disassembly rod to pass through, and the driving component being a telescopic hydraulic top located on the outside of the receiving housing; The two ends of the telescopic hydraulic jack are respectively connected to the disassembly rod and the receiving housing; The outer side walls of the housing on both sides along the second direction are provided with anti-fall lugs; The anchor cable unanchoring device further includes a support plate, the driving member is mounted on the support plate, the support plate has a second through hole for accommodating the dismantling rod, a second stop is provided on the side of the second through hole away from the driving member, the second stop is connected to the dismantling rod, and the driving member is located between the housing and the support plate.

2. The anchor cable unanchoring device according to claim 1, characterized in that, The collar is provided with a second mating part for mating with the first mating part.

3. The anchor cable unanchoring device according to claim 2, characterized in that, The first mating part is constructed as a first mating surface, and the second mating part is constructed as a second mating surface.

4. The anchor cable unanchoring device according to claim 1, characterized in that, A first stop is provided on the side of the first through hole away from the housing, and the first stop is connected to the disassembly rod.

5. The anchor cable retraction device according to claim 1, characterized in that, The housing is provided with reinforcing ribs that connect the side walls and bottom walls of the housing.

6. An anchor cable assembly, characterized in that, Includes the anchor cable structure and the anchor cable unanchoring device as described in any one of claims 1-5.

7. A method for removing an anchor cable as described in claim 6, characterized in that: Connect the first mating part of the disassembly rod to the collar; Install the housing, turn the first stop to stop at the bottom of the housing, and connect the anti-fall lugs of the housing to the top plate mesh; Install the support plate, and turn the second stop of the knob to stop at the bottom of the support plate; The drive unit is installed on the support plate and abuts against the housing. Start the drive unit, set the preset pressure, the drive unit drives the disassembly rod and drives the collar to move in the first direction to disengage from the locking sleeve, and the disassembly is completed.

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