Applicable to multi-beam anchor cable reusable anchoring structure

Abstract

This invention relates to the technical field of anchoring structures and discloses an anchoring structure suitable for reusable multi-strand anchor cables, including a pad and an anchor head. The anchor cable has an extension section; the anchor head has an anchoring channel for the extension section to pass through, and the anchoring channel runs longitudinally through the anchor head; the anchor cable is formed by multiple strands of steel wire coiled and wound, and multiple anchor cables are respectively inserted into a positioning plate; the anchor head is provided with a fixed cylinder, which has a fixed cavity, and the fixed cavity is provided with a movable cylinder, which has a movable cavity; the lower part of the fixed cavity has an outer lower cavity, and the outer periphery of the outer lower cavity forms an outwardly inclined surface; the lower part of the movable cylinder has an inner lower wall, which surrounds and forms an inner lower cavity, and the inner lower wall is provided with multiple through holes; the inner lower cavity is provided with multiple movable balls that move laterally towards each other or laterally away from each other; the anchor head is provided with a drive cylinder that drives the movable cylinder to rotate synchronously and move longitudinally downward synchronously; multiple anchor heads are arranged in a ring on the pad.

Description

Technical Field

[0001] This invention patent relates to the technical field of anchor head anchoring structures, and more specifically, to an anchoring structure applicable to reusable multi-cable bundles. Background Technology

[0002] With the continuous development of modern construction and civil engineering technologies, cable anchoring technology has been widely used as an important structural reinforcement and stabilization technique. In cable anchoring structures, the anchor head anchoring structure, as a crucial connecting component between the anchor cable and the structure, directly affects the stability and reliability of the entire anchoring system.

[0003] In existing technologies, traditional anchor cable anchoring structures typically employ a single-use anchor head design. While this design meets engineering requirements to some extent, it also results in resource waste and high construction costs. For some detachable anchor head anchoring structures, the design is complex, requiring specialized tools and skills for disassembly and installation, increasing construction difficulty and costs. Summary of the Invention

[0004] The purpose of this invention is to provide a reusable anchoring structure suitable for multiple anchor cables, aiming to solve the problem that the disassembly of anchor head anchoring structures for anchor cables is complex and difficult in the prior art.

[0005] This invention is implemented as follows, applicable to reusable anchoring structures with multiple anchor cables, including a pad fixed to the surface of a structure and multiple anchor heads pressing against the pad. The anchor cables have an anchoring section that passes through the structure and is integrated with the grout, a tensioning section that passes through the structure and is fitted with a sheath, and an extension section that extends to the outside of the structure. The anchor head has an anchoring channel through which the extension section passes, and the anchoring channel extends longitudinally through the anchor head.

[0006] The anchor cable is formed by coiling and winding multiple strands of steel wire. Multiple bundles of the anchor cable are respectively threaded in the positioning plate. The multiple bundles of the anchor cable are arranged at intervals along the circumference of the positioning plate. The positioning plate isolates and positions the multiple bundles of anchor cables.

[0007] The anchor head is provided with an anchor head cavity, and a fixing cylinder is provided in the anchor head cavity. The fixing cylinder is fixedly installed in the anchor head cavity. The fixing cylinder has a fixing cavity with a top opening, and a longitudinally movable cylinder is provided in the fixing cavity. The movable cylinder has a movable cavity with a top opening.

[0008] The lower part of the fixed cavity has an outer lower cavity, and an outer inclined surface is formed on the outer periphery of the outer lower cavity. The outer inclined surface is arranged around the circumference of the outer lower cavity, and along the direction from top to bottom of the fixed cylinder, the outer inclined surface is arranged inclined inward.

[0009] The lower part of the movable cylinder has an inner lower wall, and the lower part of the movable cavity has an inner lower cavity. The inner lower wall surrounds and forms the inner lower cavity. There is a lower gap between the inner lower wall and the outer inclined surface. The inner lower wall is provided with a plurality of through holes, and the plurality of through holes are spaced around the inner lower wall circumferentially.

[0010] The lower inner cavity is provided with a plurality of movable balls that move laterally toward each other or laterally away from each other, and the plurality of movable balls are arranged around the circumference of the lower inner cavity; the outer side of the movable balls passes through the through hole and the lower gap to form an outer abutting side that abuts against the outer inclined surface, and the inner side of the movable balls has an inner abutting side, and the inner abutting sides of the plurality of movable balls surround to form a clamping channel for clamping the anchor cable; the anchor head is provided with a drive cylinder that drives the movable cylinder to rotate synchronously and move longitudinally downward synchronously.

[0011] When the anchor cable is inserted into the anchoring channel and the anchor cable is tensioned, the extension section has a clamping section passing through the clamping channel. The drive cylinder rotates, causing the moving cylinder to rotate synchronously. The moving cylinder moves longitudinally downward relative to the fixed cylinder. During the synchronous rotation of the multiple moving balls with the moving cylinder, they are subjected to the inclined pressure of the outer inclined surface, which applies a clamping force on the clamping section in the opposite direction and forms a rotational torque on the clamping section, so that the multiple moving balls clamp and fix the clamping section.

[0012] Multiple anchor heads are arranged in a ring around the pad, forming an enclosed area. The outer periphery of each anchor head has an enclosed sidewall facing the enclosed area, and the enclosed area is in the shape of a straight strip. The outer periphery of each anchor head also has a mating sidewall facing adjacent anchor heads, and the mating sidewall is in the shape of a straight strip. The mating sidewalls of adjacent anchor heads abut against each other, and the enclosed area is arranged in a polygonal shape.

[0013] Optionally, the enclosed area is covered with a polygonal inner positioning plate, the outer periphery of which has multiple positioning sidewalls, each of which corresponds to and abuts against the enclosed sidewalls of multiple anchor heads; the inner positioning plate abuts against the pad, and an inner pin passes through the inner positioning plate and the pad to fix the inner positioning plate and the pad relative to each other.

[0014] Optionally, along the direction away from the pad, the enclosing sidewall is arranged outward from the positioning sidewall, and the positioning sidewall is arranged in the same direction as the enclosing sidewall. The positioning sidewall is attached to and abuts against the enclosing sidewall, pressing downward against the enclosing sidewall to fix the anchor head and the pad relative to each other.

[0015] Optionally, the anchor head has multiple outer positioning plates extending outward from its outer periphery. The outer positioning plates are arranged away from the enclosed area and spaced apart along the circumference of the anchor head. The outer positioning plates abut against the pad plate, and the outer positioning plates and the pad plate are fixed relative to each other by an outer pin passing through the outer positioning plates and the pad plate.

[0016] Optionally, the drive cylinder surrounds and forms a drive cavity, the drive cylinder passes through the anchor head and is threadedly connected to the anchor head, and the drive cylinder moves longitudinally relative to the anchor head during the rotation of the drive cylinder relative to the anchor head; the bottom of the drive cylinder and the top of the moving cylinder are connected by a ratchet structure, and the ratchet structure is arranged around the circumference of the drive cylinder.

[0017] During the process of the driving cylinder rotating longitudinally downward relative to the anchor head, the driving cylinder drives the moving cylinder to move longitudinally downward relative to the fixed cylinder through a ratchet structure.

[0018] Optionally, the lower inner cavity has a top plate at the top and a bottom plate at the bottom, the top of the movable ball abuts against the top plate, and there is a rolling interval between the bottom of the movable ball and the bottom plate.

[0019] The drive cavity is provided with a rotatably arranged drive head. During the rotation of the drive head relative to the drive cylinder, the drive head moves longitudinally relative to the drive head. A spring is connected between the top plate and the drive head, and the spring is in a compressed state.

[0020] The drive cylinder rotates downward longitudinally, driving the moving cylinder to move downward longitudinally a set distance. Then, the multiple moving balls move laterally towards each other, clamping and fixing the clamping section. The drive head then rotates downward longitudinally relative to the drive cylinder and moves downward longitudinally a set distance relative to the drive cylinder. The drive head compresses the spring, and the spring presses the top plate downward longitudinally, causing the top plate to press downward against the multiple moving balls.

[0021] Optionally, the bottom of the drive head is provided with a downwardly extending limiting ring, which is arranged around the circumference of the drive cavity. The top plate abuts against the limiting ring from bottom to top, and the limiting ring limits the extreme position of the top plate's upward movement.

[0022] Optionally, the top of the top plate is provided with a guide groove, which extends radially along the top plate. The upper part of the movable ball is movably embedded in the guide groove and movably abuts against the top of the guide groove. The top of the guide groove is inclined upward in a direction away from the clamping section.

[0023] As the movable cylinder moves longitudinally downward relative to the fixed cylinder, the movable ball moves laterally along the guide groove toward the clamping section, clamping and fixing the clamping section. The top of the guide groove tilts downward and presses against the movable ball.

[0024] Optionally, the bottom plate has a longitudinally penetrating central hole in the middle, and there is a bottom gap between the bottom plate and the bottom of the outer lower cavity. A plurality of elastic clips are provided in the bottom gap. The bottom of the elastic clips is fixed to the bottom of the outer lower cavity, and the top of the elastic clips passes through the central hole and is freely arranged.

[0025] Multiple elastic clips are arranged circumferentially along the central hole. Along the clamping section from bottom to top, the elastic clips are inclined toward the clamping section. During the process of the moving cylinder moving longitudinally downward relative to the fixed cylinder, the inner wall of the central hole presses against the elastic clips and deforms elastically toward the clamping section. The multiple elastic clips converge toward each other and clamp the outer periphery of the clamping section, thus clamping and fixing the clamping section.

[0026] Optionally, along the clamping section from bottom to top, the elastic clips are arranged obliquely along the circumference of the clamping section, and multiple elastic clips are spirally inclined along the circumference of the clamping section, and the inclination direction of the elastic clips is consistent with the spiral direction of the steel strands on the anchor cable; when multiple elastic clips are squeezed and elastically deformed towards the clamping section, multiple elastic clips are spirally clamped on the outer periphery of the clamping section.

[0027] Compared with existing technologies ， This invention provides a reusable anchoring structure suitable for multiple anchor cables. Through the combined action of the anchor head and other components such as the pad, the anchor cables are fixed. The clamping and fixing effect of the anchor head, combined with the support and protection of other components, ensures the anchor cables are firmly fixed in the structure, enhancing its load-bearing capacity and stability. Furthermore, the design of the drive cylinder allows for convenient up-and-down movement of the cylinder, controlling the lateral movement of multiple moving ball bearings towards or away from each other, facilitating easy installation and disassembly. Thus, the overall operation is simple, convenient, and reliable.

[0028] Furthermore, the positioning plate allows for the positioning of multiple anchor cables, followed by convenient installation of the anchor heads. These anchor heads are arranged in a ring on the pad, abutting against each other, resulting in a compact and space-optimized design. This allows the multiple anchor heads to collectively form a stable support structure, thereby enhancing the overall stability of the anchoring structure. Moreover, because the mating sidewalls of the anchor heads are straight and abut against each other, installation is simple; the anchor heads are placed on the pad in a predetermined order, facilitating installation and maintenance. Attached Figure Description

[0029] Figure 1This is a schematic diagram of the structure of the reusable anchoring structure for multiple anchor cables provided by the present invention;

[0030] Figure 2 This is a schematic diagram of the connection between the fixed cylinder and the movable cylinder provided by the present invention;

[0031] Figure 3 This is a structural schematic diagram of the anchor head, inner positioning plate, and outer positioning plate provided by the present invention;

[0032] Figure 4 This is a schematic diagram of the connection between the anchor head and the inner positioning plate provided by the present invention;

[0033] Figure 5 This is a partial schematic diagram of the elastic clip provided by the present invention;

[0034] Figure 6 This is a schematic diagram of the connection between the elastic clip and the anchor cable provided by the present invention;

[0035] Figure 7 This is a schematic diagram showing the connection between the positioning plate, anchor cable, movable ball bearing, and fixed cylinder provided by the present invention.

[0036] Figure 8 This is a three-dimensional schematic diagram of the movable ball provided by the present invention. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0038] The implementation of the present invention will be described in detail below with reference to specific embodiments.

[0039] In the accompanying drawings of this embodiment, the same or similar reference numerals correspond to the same or similar components. In the description of this invention, it should be understood that if terms such as "upper," "lower," "left," and "right" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, they are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the accompanying drawings are only for illustrative purposes and should not be construed as limiting this patent. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0040] Reference Figure 1-8 The image shown is a preferred embodiment of the present invention.

[0041] The present invention provides an anchoring structure suitable for reusable multi-cable bundles, comprising a pad fixed to the surface of a structure and a plurality of anchor heads 100 pressing against the pad. The anchor cable has an anchoring section that passes through the structure and is integrated with the grout, a tensioning section that passes through the structure and is fitted with a sheath, and an extension section that extends to the outside of the structure. The anchor head 100 has an anchoring channel through which the extension section passes, and the anchoring channel extends longitudinally through the anchor head 100.

[0042] The anchor cable is formed by multiple strands of steel wire coiled and wound together. Multiple anchor cables are respectively threaded in the positioning plate. The multiple anchor cables are arranged at intervals along the circumference of the positioning plate, and the positioning plate isolates and positions the multiple anchor cables.

[0043] An anchor head 100 has an anchor head cavity, and a fixing cylinder 200 is provided in the anchor head cavity. The fixing cylinder 200 is fixedly installed in the anchor head cavity. The fixing cylinder 200 has a fixing cavity with a top opening, and a longitudinally movable cylinder 300 is provided in the fixing cavity. The movable cylinder 300 has a movable cavity with a top opening.

[0044] The lower part of the fixed cavity has an outer lower cavity, and an outer inclined surface is formed on the outer periphery of the outer lower cavity. The outer inclined surface is arranged around the circumference of the outer lower cavity, and the outer inclined surface is arranged inwardly in the direction from top to bottom along the fixed cylinder 200.

[0045] The lower part of the movable cylinder 300 has an inner lower wall, and the lower part of the movable cavity has an inner lower cavity. The inner lower wall surrounds and forms the inner lower cavity. There is a lower gap between the inner lower wall and the outer inclined surface. Multiple through holes 303 are provided in the inner lower wall. The multiple through holes 303 are spaced around the inner lower wall in the circumferential direction.

[0046] The lower inner cavity is provided with a plurality of movable balls 310 that move laterally toward each other or laterally away from each other. The plurality of movable balls 310 are arranged around the circumference of the lower inner cavity. The outer side of the movable balls 310 passes through the through hole 303 and the lower gap to form an outer abutting side that abuts against the outer inclined surface. The inner side of the movable balls 310 has an inner abutting side. The inner abutting sides of the plurality of movable balls 310 surround to form a clamping channel for clamping the anchor cable. The anchor head 100 is provided with a drive cylinder 400 that drives the movable cylinder 300 to rotate synchronously and move longitudinally downward synchronously.

[0047] When the anchor cable is inserted into the anchoring channel and the anchor cable is tensioned, the outer extension has a clamping section that passes through the clamping channel. The drive cylinder 400 rotates, which drives the moving cylinder 300 to rotate synchronously. The moving cylinder 300 moves longitudinally downward relative to the fixed cylinder 200. During the synchronous rotation of the multiple moving balls 310 with the moving cylinder 300, they are subjected to the inclined pressure of the outer inclined surface, which applies a clamping force in the opposite direction to the clamping section and forms a rotational torque on the clamping section so that the multiple moving balls 310 clamp and fix the clamping section.

[0048] Multiple anchor heads 100 are arranged in a ring on the pad, forming an enclosed area. The outer periphery of each anchor head 100 has an enclosing sidewall facing the enclosed area, and the enclosure is in the shape of a straight strip. The outer periphery of each anchor head 100 also has a mating sidewall facing the adjacent anchor head 100, and the mating sidewall is in the shape of a straight strip. The mating sidewalls of adjacent anchor heads 100 abut against each other, and the enclosed area is arranged in a polygonal shape.

[0049] The aforementioned reusable anchoring structure for multiple anchor cables achieves anchor cable fixation through the combined action of the anchor head 100 and components such as the pad. The clamping and fixing effect of the anchor head 100, combined with the support and protection of other components, ensures the anchor cables are firmly fixed in the structure, enhancing its load-bearing capacity and stability. Furthermore, the design of the drive cylinder 400 allows for convenient vertical movement of the cylinder 300, controlling the lateral movement of multiple moving ball bearings 310 towards or away from each other, facilitating easy installation and disassembly. Thus, the overall operation is simple, convenient, and reliable.

[0050] Furthermore, the positioning plate allows for the positioning of multiple anchor cables, followed by the convenient installation of the anchor heads 100. These anchor heads 100 are arranged in a ring on the pad and abut against each other, resulting in a compact and space-optimized design. This allows the multiple anchor heads 100 to collectively form a stable support structure, thereby enhancing the overall stability of the anchoring structure. Moreover, because the mating sidewalls of the anchor heads 100 are straight and abut against each other, installation is simple; the anchor heads 100 are placed on the pad in a predetermined order, facilitating installation and maintenance.

[0051] The enclosed area is covered by a polygonal inner positioning plate 110. The outer periphery of the inner positioning plate 110 has multiple positioning sidewalls, which respectively abut against the enclosing sidewalls of the multiple anchor heads 100. The inner positioning plate 110 abuts against a pad, and an inner pin passes through both the inner positioning plate 110 and the pad, fixing the inner positioning plate 110 and the pad relatively in place. This facilitates installation, improves stability during installation, and enhances the stability of the multiple anchor heads 100. The inner pin ensures the connection strength between the inner positioning plate 110 and the pad.

[0052] Along the direction away from the pad, the enclosing sidewall is arranged outwards from the positioning sidewall, while the positioning sidewall is arranged in the same direction as the enclosing sidewall. The positioning sidewall surface fits against the enclosing sidewall and presses downwards against the enclosing sidewall, fixing the anchor head 100 relative to the pad. This forms a plug-in installation method, which makes the connection more stable and makes it easier to position and install the anchor head 100 during the installation process.

[0053] Multiple outer positioning plates 120 extend outward from the outer periphery of the anchor head 100. These outer positioning plates 120 are arranged away from the enclosed area and spaced apart along the circumference of the anchor head 100. Each outer positioning plate 120 abuts against a pad, and is fixed to the pad by an outer pin passing through both the outer positioning plate 120 and the pad. This strengthens the connection between the anchor head 100 and the pad, resulting in a more stable overall structure.

[0054] In this embodiment, the drive cylinder 400 surrounds and forms a drive cavity. The drive cylinder 400 passes through the anchor head 100 and is threadedly connected to the anchor head 100. During the rotation of the drive cylinder 400 relative to the anchor head 100, the drive cylinder 400 moves longitudinally relative to the anchor head 100. The bottom of the drive cylinder 400 and the top of the moving cylinder 300 are connected by a ratchet structure, and the ratchet structure is arranged around the circumference of the drive cylinder 400.

[0055] During the downward longitudinal rotation of the drive cylinder 400 relative to the anchor head 100, the drive cylinder 400 drives the moving cylinder 300 to move downward longitudinally relative to the fixed cylinder 200 via a ratchet structure. In this way, the connection between the moving cylinder 300 and the drive cylinder 400 is achieved through the ratchet structure. As the drive cylinder 400 rotates downward, the moving cylinder 300 moves downward accordingly, thereby controlling the lateral movement of the moving balls 310 towards each other.

[0056] The lower inner cavity has a top plate 301 at the top and a bottom plate 302 at the bottom. The top of the movable ball 310 abuts against the top plate 301, and there is a rolling gap between the bottom of the movable ball 310 and the bottom plate 302.

[0057] The drive cavity is provided with a rotatably arranged drive head 410. During the rotation of the drive head 410 relative to the drive cylinder 400, the drive head 410 moves longitudinally relative to the drive head 410. A spring 320 is connected between the top plate 301 and the drive head 410, and the spring 320 is in a compressed state.

[0058] The drive cylinder 400 rotates vertically downwards, and the drive moving cylinder 300 moves vertically downwards a set distance. Multiple moving balls 310 move laterally towards each other, clamping and fixing the clamping section. Then, the drive head 410 rotates vertically downwards relative to the drive cylinder 400 and moves vertically downwards relative to the drive cylinder 400 a set distance. The drive head 410 compresses the spring 320, which presses downwards against the top plate 301, causing it to move vertically downwards. This causes the top plate 301 to press downwards against the multiple moving balls 310. In this way, the spring force of the spring 320 is used to press the moving cylinder 300 downwards. Furthermore, the bottom of the moving balls 310 and the bottom plate 302 have a rolling gap, facilitating the rolling of the moving balls 310. During clamping, the inward clamping of the moving balls 310 is strengthened.

[0059] A downwardly extending limiting ring 340 is provided at the bottom of the drive head. The limiting ring 340 is arranged circumferentially around the drive cavity. The top plate 301 abuts against the limiting ring 340 from bottom to top. The limiting ring 340 limits the extreme position of the upward movement of the top plate 301. In this way, the design of the limiting ring 340 effectively limits the minimum distance between the drive head and the top plate 301, avoids excessive compression of the spring 320, and ensures that the operator can clearly feel when the set minimum distance is reached.

[0060] The top of the top plate 301 is provided with a guide groove 3020, which extends radially along the top plate 301. The upper part of the movable ball 310 is movably embedded in the guide groove 3020 and movably abuts against the top of the guide groove 3020. The top of the guide groove 3020 is inclined upward along the direction away from the clamping section.

[0061] During the downward longitudinal movement of the movable cylinder 300 relative to the fixed cylinder 200, the movable ball 310 moves laterally along the guide groove 3020 toward the clamping section, clamping and fixing the clamping section. The top of the guide groove 3020 is inclined downward and presses against the movable ball 310. In this way, the lateral movement trajectory of the movable ball 310 can be well guided by the guide groove 3020.

[0062] In this embodiment, the bottom plate 302 has a longitudinally penetrating central hole in the middle, and there is a bottom gap between the bottom plate 302 and the bottom of the outer lower cavity. A plurality of elastic clips 330 are provided in the bottom gap. The bottom of the elastic clips 330 is fixed to the bottom of the outer lower cavity, and the top of the elastic clips 330 passes through the central hole and is freely arranged.

[0063] Multiple elastic clips 330 are arranged at circumferential intervals along the central hole. Along the clamping section from bottom to top, the elastic clips 330 are inclined towards the clamping section. During the downward longitudinal movement of the movable cylinder 300 relative to the fixed cylinder 200, the inner wall of the central hole presses against the elastic clips 330, causing them to elastically deform towards the clamping section. The multiple elastic clips 330 then converge towards each other, clamping the outer periphery of the clamping section and securing it. Thus, by using the movable cylinder 300 to press against the elastic clips 330 from top to bottom, the elastic clips 330 bend inward and deform, pressing against and clamping the outer periphery of the clamping section, further strengthening the anchor cable fixation.

[0064] Along the clamping section from bottom to top, the elastic clamping pieces 330 are arranged obliquely around the circumference of the clamping section. Multiple elastic clamping pieces 330 are spirally inclined around the circumference of the clamping section, and the inclination direction of the elastic clamping pieces 330 is consistent with the spiral direction of the steel strands on the anchor cable. When the multiple elastic clamping pieces 330 are compressed and elastically deformed towards the clamping section, they spirally clamp onto the outer circumference of the clamping section. In this spiral clamping method, the multiple elastic clamping pieces 330 can fit more tightly against the outer circumference of the clamping section, thereby improving anchoring efficiency. This helps reduce slippage and loosening of the anchor cable or steel strand, improving the stability and safety of the overall structure. The inclination direction of the elastic clamping pieces 330 is consistent with the spiral direction of the steel strands on the anchor cable; this design gives the clamping system a certain degree of self-adaptability. When the anchor cable or steel strand is subjected to external force, the elastic clamping pieces 330 can deform accordingly to adapt to this change, thereby maintaining a stable clamping state.

[0065] Reference Figure 8 In a preferred embodiment, multiple anchor cables are threaded through a single anchor head cavity. The anchor cables pass through a positioning plate, which has multiple through holes for the anchor cables to pass through. An outer opening is formed on the outer side of each through hole, and the outer side of the anchor cable is exposed outside the outer opening, forming an exposed section. The positioning plate remains horizontal, and the inner side of the moving ball bearing 310 has an inwardly recessed notch 311 for the exposed section to pass through. This reduces the design requirements of the anchor head and improves space utilization.

[0066] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An anchoring structure suitable for reusable multi-cable bundles, characterized in that, It includes a pad fixed to the surface of the structure and multiple anchor heads pressing against the pad. The anchor cable has an anchoring section that passes through the structure and is integrated with the grout, a tensioning section that passes through the structure and is fitted with a sheath, and an extension section that extends to the outside of the structure. The anchor head has an anchoring channel through which the extension section passes, and the anchoring channel extends longitudinally through the anchor head. The anchor cable is formed by coiling and winding multiple strands of steel wire. Multiple bundles of the anchor cable are respectively threaded in the positioning plate. The multiple bundles of the anchor cable are arranged at intervals along the circumference of the positioning plate. The positioning plate isolates and positions the multiple bundles of anchor cables. The anchor head is provided with an anchor head cavity, and a fixing cylinder is provided in the anchor head cavity. The fixing cylinder is fixedly installed in the anchor head cavity. The fixing cylinder has a fixing cavity with a top opening, and a longitudinally movable cylinder is provided in the fixing cavity. The movable cylinder has a movable cavity with a top opening. The lower part of the fixed cavity has an outer lower cavity, and an outer inclined surface is formed on the outer periphery of the outer lower cavity. The outer inclined surface is arranged around the circumference of the outer lower cavity, and along the direction from top to bottom of the fixed cylinder, the outer inclined surface is arranged inclined inward. The lower part of the movable cylinder has an inner lower wall, and the lower part of the movable cavity has an inner lower cavity. The inner lower wall surrounds and forms the inner lower cavity. There is a lower gap between the inner lower wall and the outer inclined surface. The inner lower wall is provided with a plurality of through holes, and the plurality of through holes are spaced around the inner lower wall circumferentially. The lower inner cavity is provided with a plurality of movable balls that move laterally toward each other or laterally away from each other, and the plurality of movable balls are arranged around the circumference of the lower inner cavity; the outer side of the movable balls passes through the through hole and the lower gap to form an outer abutting side that abuts against the outer inclined surface, and the inner side of the movable balls has an inner abutting side, and the inner abutting sides of the plurality of movable balls surround to form a clamping channel for clamping the anchor cable; the anchor head is provided with a drive cylinder that drives the movable cylinder to rotate synchronously and move longitudinally downward synchronously. When the anchor cable is inserted into the anchoring channel and the anchor cable is tensioned, the extension section has a clamping section passing through the clamping channel. The drive cylinder rotates, causing the moving cylinder to rotate synchronously. The moving cylinder moves longitudinally downward relative to the fixed cylinder. During the synchronous rotation of the multiple moving balls with the moving cylinder, they are subjected to the inclined pressure of the outer inclined surface, which applies a clamping force on the clamping section in the opposite direction and forms a rotational torque on the clamping section, so that the multiple moving balls clamp and fix the clamping section. Multiple anchor heads are arranged in a ring around the pad, forming an enclosed area. The outer periphery of each anchor head has an enclosed sidewall facing the enclosed area, and the enclosed area is in the shape of a straight strip. The outer periphery of each anchor head also has a mating sidewall facing adjacent anchor heads, and the mating sidewall is in the shape of a straight strip. The mating sidewalls of adjacent anchor heads abut against each other, and the enclosed area is arranged in a polygonal shape.

2. The anchoring structure for reusable multi-cable bundles as described in claim 1, characterized in that, The enclosed area is covered by a polygonal inner positioning plate. The outer periphery of the inner positioning plate has multiple positioning sidewalls, which respectively abut against the enclosed sidewalls of multiple anchor heads. The inner positioning plate abuts against the pad, and the inner positioning plate and the pad are fixed relative to each other by an inner pin passing through the inner positioning plate and the pad.

3. The anchoring structure applicable to reusable multi-cable bundles as described in claim 2, characterized in that, Along the direction away from the pad, the enclosing sidewall is arranged outward from the positioning sidewall, and the positioning sidewall is arranged in the same direction as the enclosing sidewall. The positioning sidewall is attached to and abuts against the enclosing sidewall, pressing downward against the enclosing sidewall to fix the anchor head and the pad relative to each other.

4. The anchoring structure for reusable multi-cable bundles as described in claim 1, characterized in that, Multiple outer positioning plates extend outward from the outer periphery of the anchor head. The outer positioning plates are arranged away from the enclosed area and are spaced apart along the circumference of the anchor head. The outer positioning plates abut against the pad plate, and the outer positioning plates and the pad plate are fixed relative to each other by an outer pin passing through the outer positioning plates and the pad plate.

5. The anchoring structure applicable to reusable multi-cable bundles as described in any one of claims 1 to 4, characterized in that, The drive cylinder surrounds and forms a drive cavity. The drive cylinder passes through the anchor head and is threadedly connected to the anchor head. During the rotation of the drive cylinder relative to the anchor head, the drive cylinder moves longitudinally relative to the anchor head. The bottom of the drive cylinder and the top of the moving cylinder are connected by a ratchet structure, and the ratchet structure is arranged around the circumference of the drive cylinder. During the process of the driving cylinder rotating longitudinally downward relative to the anchor head, the driving cylinder drives the moving cylinder to move longitudinally downward relative to the fixed cylinder through a ratchet structure.

6. The anchoring structure for reusable multi-cable bundles as described in claim 5, characterized in that, The lower inner cavity has a top plate at the top and a bottom plate at the bottom. The top of the movable ball abuts against the top plate, and there is a rolling interval between the bottom of the movable ball and the bottom plate. The drive cavity is provided with a rotatably arranged drive head. During the rotation of the drive head relative to the drive cylinder, the drive head moves longitudinally relative to the drive head. A spring is connected between the top plate and the drive head, and the spring is in a compressed state. The drive cylinder rotates downward longitudinally, driving the moving cylinder to move downward longitudinally a set distance. Then, the multiple moving balls move laterally towards each other, clamping and fixing the clamping section. The drive head then rotates downward longitudinally relative to the drive cylinder and moves downward longitudinally a set distance relative to the drive cylinder. The drive head compresses the spring, and the spring presses the top plate downward longitudinally, causing the top plate to press downward against the multiple moving balls.

7. The anchoring structure for reusable multi-cable bundles as described in claim 6, characterized in that, The bottom of the drive head is provided with a downwardly extending limiting ring, which is arranged around the circumference of the drive cavity. The top plate abuts against the limiting ring from bottom to top, and the limiting ring limits the extreme position of the top plate's upward movement.

8. The anchoring structure for reusable multi-cable bundles as described in claim 6, characterized in that, The top plate has a guide groove at its top, which extends radially along the top plate. The upper part of the movable ball is movably embedded in the guide groove and movably abuts against the top of the guide groove. The top of the guide groove is inclined upwards in a direction away from the clamping section. As the movable cylinder moves longitudinally downward relative to the fixed cylinder, the movable ball moves laterally along the guide groove toward the clamping section, clamping and fixing the clamping section. The top of the guide groove tilts downward and presses against the movable ball.

9. The anchoring structure for reusable multi-cable bundles as described in claim 6, characterized in that, The bottom plate has a longitudinally penetrating central hole in the middle, and there is a bottom gap between the bottom plate and the bottom of the outer lower cavity. Multiple elastic clips are provided in the bottom gap. The bottom of the elastic clips is fixed to the bottom of the outer lower cavity, and the top of the elastic clips passes through the central hole and is freely arranged. Multiple elastic clips are arranged circumferentially along the central hole. Along the clamping section from bottom to top, the elastic clips are inclined toward the clamping section. During the process of the moving cylinder moving longitudinally downward relative to the fixed cylinder, the inner wall of the central hole presses against the elastic clips and deforms elastically toward the clamping section. The multiple elastic clips converge toward each other and clamp the outer periphery of the clamping section, thus clamping and fixing the clamping section.

10. The anchoring structure for reusable multi-cable bundles as described in claim 9, characterized in that, Along the clamping section from bottom to top, the elastic clips are arranged obliquely along the circumference of the clamping section, and multiple elastic clips are spirally inclined along the circumference of the clamping section, and the inclination direction of the elastic clips is consistent with the spiral direction of the steel strands on the anchor cable; when multiple elastic clips are squeezed and elastically deformed towards the clamping section, multiple elastic clips are spirally clamped on the outer periphery of the clamping section.

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