Recyclable anchor line device

Abstract

The application discloses a recyclable anchor cable device and relates to the technical field of anchor cables. The recyclable anchor cable device comprises a steel strand, an inner anchor head and a spacer sleeve sleeved on the steel strand, further comprises an anchor head shield, the inner anchor head is arranged in the anchor head shield, the steel strand is fixed with the inner anchor head through a fixed clamping piece, a movable lock piece and a lock piece fixing portion are arranged on the inner wall of the anchor head shield, the movable lock piece is fixed in contact with the inner anchor head before the steel strand is tensioned, when the steel strand is tensioned, the inner anchor head drives the movable lock piece to be fixed with the lock piece fixing portion, and the contact between the inner anchor head and the movable lock piece is cancelled, the application completely relies on the natural transmission of tension force to trigger the unlocking mechanism, without additional torque transmission or external equipment intervention, effectively avoiding the problems of easy rusting, deformation and jamming of the traditional threaded unlocking structure, and unlocking failure caused by torque attenuation when recycling long steel strands, and ensuring stable execution of the unlocking action.

Description

Technical Field

[0001] This invention belongs to the field of anchor cable technology, and more specifically, relates to a recyclable anchor cable device. Background Technology

[0002] In geotechnical engineering practice, anchor cables are widely used as an important support structure. However, traditional disposable anchor cables cannot be recycled after completing their support function, resulting in a large amount of steel being permanently buried underground. This not only wastes resources but also causes underground space pollution problems, impacting long-term environmental sustainability. With the expansion of engineering scale and increasing environmental protection requirements, recyclable anchor cable technology has gradually become a research hotspot. The core of this technology lies in the design of the unlocking mechanism, the reliability of which directly determines the success or failure of the anchor cable recycling process, operational efficiency, and on-site safety.

[0003] Currently, the unlocking methods for recyclable anchor cables are mainly divided into mechanical unlocking, thermosetting unlocking, pull-out unlocking, and chemical unlocking. Among them, in mechanical unlocking, although the threaded unlocking structure is simple, the threaded mating surface is prone to corrosion or deformation and jamming in actual applications. Especially when retrieving long steel strands, the torque is severely attenuated during the transmission along the steel strand, making the unlocking action impossible to complete. In view of the above problems, a recyclable anchor cable device is proposed here. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a recyclable anchor cable device that can overcome or at least partially solve the above problems.

[0005] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows:

[0006] A recyclable anchor cable device includes a steel strand, an inner anchor head, and an isolation sleeve fitted onto the steel strand. It also includes an anchor head cover, with the inner anchor head disposed within the cover. The steel strand is fixed to the inner anchor head via a fixing clip. A movable locking element and a locking element fixing part are provided on the inner wall of the anchor head cover. Before tensioning the steel strand, the movable locking element is fixed against the inner anchor head. During tensioning, the inner anchor head drives the movable locking element to fix itself against the locking element fixing part, and the contact between the inner anchor head and the movable locking element is released.

[0007] As a preferred embodiment of the present invention: the anchor head cover includes a cover body, and the two ends of the cover body are respectively threaded with a cover cone head and a cover tail shell.

[0008] As a preferred embodiment of the present invention: the inner anchor head includes a fixed anchor plate that is threadedly connected to the main body of the protective cover. The fixed anchor plate is provided with a fixed conical hole. An installation column is fixedly installed on the fixed anchor plate. A limit anchor plate is slidably installed on the installation column. A second elastic element is fixedly installed on the limit anchor plate. A driving anchor plate is fixedly installed on the installation column by bolts and nuts. The diameter of the driving anchor plate is larger than that of the limit anchor plate.

[0009] As a preferred embodiment of the present invention: a conical abutment is fixedly installed at the tail of the fixing clip. When the fixing clip clamps the steel strand and inserts it into the fixing conical hole, the second elastic element abuts against the conical abutment.

[0010] In a preferred embodiment of the present invention: a clamping sleeve is fixedly installed on the fixed anchor plate, the inclined surface of the conical abutment plate abuts against the inner end face of the clamping sleeve, a third elastic element is sleeved on the fixed clamping plate, and the two ends of the third elastic element are respectively connected to the fixed anchor plate and the conical abutment plate; when the outer anchor head is unfixed to the steel strand, the third elastic element rebounds and drives the fixed clamping plate to disengage from the fixed conical hole and the clamping sleeve.

[0011] As a preferred embodiment of the present invention: a sleeve fixing head is fixedly installed on the fixed anchor plate, the sleeve fixing head is snapped and fixed with the isolation sleeve, a first elastic member is fixedly installed inside the tail shell of the protective cover, the other end of the first elastic member is in contact with the fixed anchor plate, and when the limiting anchor plate is in contact with the movable locking member, the first elastic member is in a compressed state.

[0012] As a preferred embodiment of the present invention: the movable locking member includes a hinge seat fixedly installed on the inner ring of the protective cover body, and a limiting plate is hinged on the hinge seat. When the first elastic member is in a compressed state, the limiting plate abuts against and is fixed to the limiting anchor piece. When the steel strand is tensioned, the driving anchor piece drives the limiting plate to rotate, and the locking member fixing part fixes the limiting plate.

[0013] As a preferred embodiment of the present invention: the locking part is a permanent magnet fixedly installed on the inner ring of the protective cover body, and the limiting plate is a metal plate. During the tensioning process, after the driving anchor plate drives the limiting plate to rotate more than 45°, the permanent magnet attracts and fixes the limiting plate.

[0014] In a preferred embodiment of the present invention: the movable locking component includes a locking rod slidably mounted on the protective cover body. A limiting hole is provided on the outer wall of the protective cover body. A plug is fixedly installed at one end of the locking rod extending into the limiting hole. A mounting plate is fixedly installed at the other end of the locking rod away from the plug. A fourth elastic element is fixedly installed on the mounting plate. The other end of the fourth elastic element abuts against and is fixed to the inner wall of the protective cover body. A wedge block is fixedly installed on the mounting plate. A locking groove is provided at one end of the locking rod near the wedge block. A sliding groove is provided on the side wall of the locking rod. A limiting block coupled to the sliding groove is provided in the limiting hole.

[0015] In a preferred embodiment of the present invention: the locking part includes a mounting pin and a clamp head fixedly connected to the mounting pin; a mounting ring is fixedly connected to the inner wall of the protective cover body; the mounting pin is slidably mounted on the mounting ring; a fifth elastic element is sleeved on the mounting pin; the two ends of the fifth elastic element are respectively abutted and fixed to the clamp head and the mounting ring; when the steel strand is tensioned, the driving anchor plate drives the clamp rod to move outward of the protective cover body through the inclined surface of the wedge block until the clamp head is inserted into the clamp groove, at which time the plug is inserted into the grouting stone body.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0017] 1. This invention relies entirely on the natural transmission of tension force to trigger the unlocking mechanism, without the need for additional torque transmission or external equipment intervention. This effectively avoids the problems of easy corrosion, deformation and jamming in traditional threaded unlocking structures, as well as the failure of unlocking due to torque attenuation when retrieving long steel strands, ensuring stable execution of the unlocking action.

[0018] 2. This invention, through the synergistic action of the second elastic element, the third elastic element, the conical abutment, and the clamp fixing sleeve, converts the axial force into a radial component force. After the outer anchor head is removed from the fixing, the elastic element rebounds and drives the fixing clamp to automatically disengage from the fixing conical hole and the clamp fixing sleeve, thus solving the problem that the fixing clamp is stuck in the conical hole and difficult to disengage during the traditional anchor cable retrieval.

[0019] 3. The installation process of this invention is similar to that of traditional anchor cables, requiring no additional complex procedures; during the recycling process, it relies on the automatic reset of elastic components and the coordination of mechanisms, eliminating the need for cumbersome operations and solving the problems of cumbersome installation or recycling processes and low operational efficiency of existing recyclable anchor cables.

[0020] 4. This invention forms additional anchoring points by inserting the plug of the clamp rod into the grouting stone body. Combined with the synergistic effect of multiple components of the inner anchor head, it forms a double anchoring guarantee, effectively improving the support stability of the anchor cable under complex geological conditions and solving the problem of insufficient support reliability of traditional devices.

[0021] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0022] In the attached diagram:

[0023] Figure 1 This is a three-dimensional structural diagram of a recyclable anchor cable device proposed in this invention. Figure 1 ;

[0024] Figure 2 This is a schematic diagram of the structure of the movable locking element of a recyclable anchor cable device proposed in this invention. Figure 1 ;

[0025] Figure 3 This is a three-dimensional structural diagram of a recyclable anchor cable device proposed in this invention. Figure 2 ;

[0026] Figure 4 This is a cross-sectional view of a recyclable anchor cable device proposed in this invention;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure at point A;

[0028] Figure 6 for Figure 5 Schematic diagram of the structure at point B;

[0029] Figure 7 This is a schematic diagram of the structure of an anchor head cover for a recyclable anchor cable device proposed in this invention;

[0030] Figure 8 This is a schematic diagram of the structure of the inner anchor head of a recyclable anchor cable device proposed in this invention. Figure 1 ;

[0031] Figure 9 This is an exploded view of the inner anchor head of a recyclable anchor cable device proposed in this invention;

[0032] Figure 10 This invention provides a schematic diagram of the structure of the movable locking member of the inner anchor head of a recyclable anchor cable device. Figure 2 ;

[0033] Figure 11 This is a schematic diagram of the structure of the fixing clip of the inner anchor head of a recyclable anchor cable device proposed in this invention.

[0034] In the diagram: 1. Anchor head cover; 11. Cover body; 12. Cover cone head; 13. Cover tail shell; 14. First elastic element; 15. Limiting hole; 2. Isolation sleeve; 21. Steel strand; 22. Sleeve fixing head; 3. Inner anchor head; 31. Fixed anchor plate; 32. Fixed cone hole; 33. Mounting column; 34. Limiting anchor plate; 35. Driving anchor plate; 36. Second elastic element; 4. Clamping plate fixing sleeve; 41. Fixed clamping plate; 411. Conical abutment; 42. Third elastic element; 5. Clamping rod; 51. Plug; 52. Fourth elastic element; 53. Slot; 54. Mounting plate; 55. Wedge block; 56. Slide groove; 6. Hinge seat; 61. Limiting plate; 7. Mounting pin; 71. Clamping head; 72. Fifth elastic element; 8. Permanent magnet. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0036] Example 1: Refer to Figures 1-11 A recyclable anchor cable device includes a steel strand 21, an inner anchor head 3, and an isolation sleeve 2 sleeved on the steel strand 21. It also includes an anchor head cover 1, with the inner anchor head 3 disposed inside the anchor head cover 1. The steel strand 21 is fixed to the inner anchor head 3 by a fixing clip 41. The inner wall of the anchor head cover 1 is provided with a movable locking element and a locking element fixing part.

[0037] Before the steel strand 21 is tensioned, the movable locking member is fixed in contact with the inner anchor head 3. When the steel strand 21 is tensioned, the inner anchor head 3 drives the movable locking member to be fixed with the locking member fixing part, and the contact between the inner anchor head 3 and the movable locking member is canceled. This process relies entirely on the natural transmission of tension force to trigger the unlocking mechanism, without the need for additional torque transmission or external equipment intervention.

[0038] Reference Figure 1 , Figure 3 and Figure 7 The anchor head cover 1 includes a cover body 11, and the two ends of the cover body 11 are respectively threaded with a cover cone head 12 and a cover tail shell 13.

[0039] The main body 11 of the protective cover refers to the core support structure of the anchor head protective cover 1, which can be realized by a cylindrical metal component, with the purpose of providing a stable load-bearing foundation to accommodate the inner anchor head 3 and the movable locking component; the cone head 12 and the tail shell 13 of the protective cover refer to the detachable end components, which can be realized by a metal shell with internal threads, with the purpose of achieving adaptable connection with the drilling environment and the tail structure respectively; the threaded connection refers to the detachable fixing method realized by the helical pair, with the purpose of providing reliable axial fixation while facilitating disassembly.

[0040] Reference Figure 5 , Figure 8 and Figure 9 The inner anchor head 3 includes a fixed anchor plate 31 that is threadedly connected to the main body 11 of the protective cover. The fixed anchor plate 31 is provided with a fixed conical hole 32. An installation column 33 is fixedly installed on the fixed anchor plate 31. A limit anchor plate 34 is slidably installed on the installation column 33. A second elastic element 36 is fixedly installed on the limit anchor plate 34. A driving anchor plate 35 is fixedly installed on the installation column 33 by bolts and nuts. The diameter of the driving anchor plate 35 is larger than that of the limit anchor plate 34.

[0041] Among them, the fixed anchor plate 31 refers to the component in the inner anchor head 3 used to provide the installation foundation. It can be connected to the protective cover body 11 by threaded connection or snap-fit ​​connection. Its purpose is to ensure the stability of the inner anchor head 3 during tensioning and to facilitate disassembly during recovery. The fixed conical hole 32 can be understood as a conical hole used to accommodate the fixed clamping plate 41. It can be designed with a standard taper or an adaptive taper structure. Its purpose is to ensure that the fixed clamping plate 41 is accurately inserted and firmly clamps the steel strand 21, preventing the clamping plate from slipping. The mounting column 33 is specifically a guide structure, such as a cylindrical rod or a guide rail. Its purpose is to guide... The guide anchor plate 34 moves smoothly along the axial direction to reduce frictional resistance. The guide anchor plate 34 can be understood as a movable anchor plate assembly, which can be installed on the mounting post 33 in a sliding manner. Its purpose is to move in response to the displacement of the inner anchor head 3. The second elastic element 36 refers to an elastic reset element, such as a helical spring or elastic rubber material. Its purpose is to provide automatic rebound force during the recovery stage to push the guide anchor plate 34 back to the initial position. The drive anchor plate 35 is specifically a component for transmitting thrust. For example, it can be a disc-shaped or ring-shaped structure. Its purpose is to effectively transmit thrust to the guide anchor plate 34 when the steel strand 21 is tensioned.

[0042] Specifically, the solution of this application achieves overall functionality through the collaborative design of multiple components of the inner anchor head 3. During the tensioning process of the steel strand 21, the driving anchor plate 35 is driven by the tension force to drive the movable locking member to complete the unlocking action; the threaded connection between the fixed anchor plate 31 and the protective cover body 11 provides a stable installation foundation, ensuring the stability of the inner anchor head 3; the mounting column 33 serves as a guide structure to make the movement path of the limiting anchor plate 34 precisely controllable; when the tension force is released, the elastic restoring force of the second elastic element 36 drives the limiting anchor plate 34 back to its original position, simplifying the unlocking process. This structural combination effectively avoids the accumulation of frictional resistance in traditional rigid designs, ensuring the timely triggering and smooth execution of the unlocking action.

[0043] Through the above technical solutions, during the tensioning and retrieval of the steel strand 21, the elastic buffering and dynamic adjustment capabilities of the inner anchor head 3 significantly reduce the risk of mechanical jamming, ensuring reliable triggering and smooth execution of the unlocking action, thereby improving the efficiency and operational safety of anchor cable retrieval.

[0044] Reference Figure 5 and Figure 11 A conical abutment 411 is fixedly installed at the tail of the fixing clip 41. When the fixing clip 41 clamps the steel strand 21 and inserts it into the fixing cone hole 32, the second elastic element 36 abuts against the conical abutment 411.

[0045] Among them, the fixing clip 41 refers to the component used to clamp the steel strand 21, which can be implemented by a wedge-shaped clip or a segmented clip structure. Its purpose is to achieve reliable clamping of the steel strand 21 through radial contraction. The conical abutment 411 refers to the conical component fixed at the tail of the fixing clip 41. It can be fixed by integral molding or welding. Its purpose is to provide an inclined structure that interacts with the elastic element to convert radial force into axial displacement. The second elastic element 36 refers to the elastic element, which can be implemented by a helical spring, rubber pad or elastic metal sheet. Its purpose is to store the compressive energy during the tensioning stage and release the elastic potential energy during the recovery stage. The fixing conical hole 32 refers to the conical hole provided on the fixing anchor plate 31. It can be a conical or stepped conical structure. Its purpose is to form a wedge-shaped fit with the fixing clip 41 to achieve clamping and fixing.

[0046] Specifically, when the fixing clip 41 clamps the steel strand 21 and inserts into the fixing cone hole 32, the second elastic element 36 is compressed and comes into contact with the cone-shaped abutment 411, forming an energy storage state; during the recovery stage, when the outer anchor head is unfixed to the steel strand 21, the second elastic element 36 rebounds and releases energy, and the radial thrust is efficiently converted into axial thrust through the inclined surface of the cone-shaped abutment 411, driving the fixing clip 41 to overcome the frictional resistance of the fixing cone hole 32, thereby achieving automatic disengagement.

[0047] The conical abutment 411 is designed in the shape of a truncated cone, and its inclined angle matches the taper of the fixed conical hole 32. The second elastic element 36 is a helical spring, one end of which abuts against the limiting anchor plate 34, and the other end contacts the inclined surface of the conical abutment 411. When the fixing clip 41 is inserted into the fixed conical hole 32, the helical spring is compressed to a preset position. During the recovery operation, after the outer anchor head is released from fixation, the helical spring rebounds and pushes the conical abutment 411, so that the fixing clip 41 smoothly exits the fixed conical hole 32 axially.

[0048] Through the above solution, this application realizes the automatic detachment function of the fixing clip 41 during the recovery stage, effectively avoiding the jamming phenomenon caused by manual operation, and significantly improving the smoothness and operational reliability of the anchor cable recovery process.

[0049] Reference Figure 5A clamping sleeve 4 is fixedly installed on the fixed anchor plate 31. The inclined surface of the conical abutment 411 abuts against the inner end face of the clamping sleeve 4. A third elastic element 42 is sleeved on the fixed clamping plate 41. The two ends of the third elastic element 42 abut against and connect with the fixed anchor plate 31 and the conical abutment 411 respectively. When the outer anchor head is not fixed to the steel strand 21, the third elastic element 42 rebounds and drives the fixed clamping plate 41 to disengage from the fixed conical hole 32 and the clamping sleeve 4.

[0050] The clamp fixing sleeve 4 refers to the annular guide structure fixed on the fixing anchor 31. It can be implemented by a metal sleeve, and its purpose is to provide stable axial contact for the conical abutment 411. The conical abutment 411 can be understood as the frustum-shaped component at the tail of the fixing clamp 41. It can be implemented by integral forging or separate welding structure, and its purpose is to convert the axial rebound force of the third elastic element 42 into a radial component force to drive the fixing clamp 41 to exit smoothly. The third elastic element 42 specifically refers to the energy storage element sleeved on the outer periphery of the fixing clamp 41. It can be implemented by a helical compression spring, a disc spring or an elastic rubber sleeve, and its purpose is to store compression energy during the tensioning stage and provide the driving force for the fixing clamp 41 to automatically detach during the recovery stage.

[0051] Specifically, the solution of this application achieves automatic disengagement through the synergistic effect of the clamping sleeve 4 and the third elastic element 42: During the tensioning process of the steel strand 21, the clamping clip 41 is inserted into the fixing cone hole 32 and clamps the steel strand 21. At this time, the inclined surface of the cone-shaped abutment 411 is in contact with the inner end face of the clamping sleeve 4, and the third elastic element 42 is compressed and stores energy. When the outer anchor head is unfixed to the steel strand 21, the rebound force of the third elastic element 42 acts directly on the cone-shaped abutment 411, pushing it to move axially along the inner hole of the clamping sleeve 4. The inclined surface structure of the cone-shaped abutment 41 decomposes the axial force into a radial component, so that the clamping clip 41 smoothly exits along the cone surface of the fixing cone hole 32 during the disengagement process, avoiding recovery obstacles caused by friction jamming.

[0052] Through the above solution, this application effectively solves the technical problem of the fixing clip 41 getting stuck in the fixing cone hole 32 during the recycling process, ensuring that the fixing clip 41 can reliably detach from the fixing cone hole 32 and the clip fixing sleeve 4, significantly reducing the difficulty of the recycling operation, avoiding the risk of damage to the steel strand 21 or the device structure, thereby improving the overall recycling efficiency and safety of the recyclable anchor cable device. Figure 5 A sleeve fixing head 22 is fixedly installed on the fixed anchor plate 31. The sleeve fixing head 22 is snapped and fixed with the isolation sleeve 2. A first elastic element 14 is fixedly installed inside the protective cover tail shell 13. The other end of the first elastic element 14 abuts and is fixed to the fixed anchor plate 31. When the limiting anchor plate 34 abuts against the movable locking part, the first elastic element 14 is in a compressed state.

[0053] The sleeve fixing head 22 is a positioning component used to reliably connect the isolation sleeve 2 and the fixing anchor plate 31. It can be implemented by snap-fit ​​or interference fit. The purpose is to ensure that the isolation sleeve 2 and the inner anchor head 3 move synchronously during tensioning and avoid relative displacement due to external force. The first elastic element 14 can be understood as an elastic element that provides axial buffering function. It can be implemented by helical spring or disc spring structure.

[0054] The isolation sleeve 2 is directly fixed to the fixed anchor plate 31 by the sleeve fixing head 22, so that the isolation sleeve 2 and the inner anchor head 3 form a synchronous movement unit, effectively eliminating the risk of sleeve displacement during tensioning; at the same time, one end of the first elastic element 14 is anchored inside the tail shell 13 of the protective cover, and the other end abuts against the fixed anchor plate 31. During the tensioning action, it is in a compressed energy storage state. When the outer anchor head cancels the fixation of the steel strand 21, the first elastic element 14 rebounds, driving the steel strand 21 to slide relative to the isolation sleeve 2 (at this time, the isolation sleeve 2 is fixed to the grouting stone body), so that the connection between the steel strand 21 and the isolation sleeve 2 is loosened, reducing the resistance of the third elastic element 42 to drive the steel strand 21 to slide, thereby reducing the resistance of the fixed clamp 41 to automatically disengage.

[0055] Reference Figure 2 The movable locking component includes a hinge seat 6 fixedly installed on the inner ring of the protective cover body 11. A limit plate 61 is hinged on the hinge seat 6. When the first elastic element 14 is in a compressed state, the limit plate 61 abuts against the limit anchor plate 34 and is fixed. When the steel strand 21 is tensioned, the driving anchor plate 35 drives the limit plate 61 to rotate, and the locking component fixing part fixes the limit plate 61. The locking component fixing part is a permanent magnet 8 fixedly installed on the inner ring of the protective cover body 11. The limit plate 61 is a metal plate. During the tensioning process, after the driving anchor plate 35 drives the limit plate 61 to rotate by more than 45°, the permanent magnet 8 attracts and fixes the limit plate 61.

[0056] The permanent magnet 8 refers to the fixing component that provides continuous magnetic force. It can be made of neodymium iron boron permanent magnet, ferrite permanent magnet or samarium cobalt permanent magnet. Its purpose is to achieve reliable adsorption and fixation without external energy. The limiting plate 61 can be a low carbon steel plate or an iron-nickel alloy plate. Its purpose is to ensure that it can be effectively adsorbed by the permanent magnet 8 and withstand mechanical stress. Specifically, the condition that the rotation angle exceeds 45° refers to the locking timing threshold after the limiting plate 61 rotates to the position. It can be set to an angle range between 45° and 75°. Its purpose is to avoid accidental locking during rotation and ensure the smooth progress of the tensioning process.

[0057] Specifically, the solution of this application achieves reliable fixation of the movable locking component through the magnetic attraction between the permanent magnet 8 and the limiting plate 61. When the steel strand 21 is tensioned, the driving anchor plate 35 pushes the limiting plate 61 to rotate around the hinge seat 6. As the rotation angle gradually increases, the distance between the limiting plate 61 and the permanent magnet 8 decreases. When the rotation angle exceeds 45°, the limiting plate 61 enters the effective attraction range of the permanent magnet 8. The magnetic force makes the limiting plate 61 firmly attracted to the inner ring of the protective cover body 11, thereby completing the locking of the movable locking component. This process ensures that the limiting plate 61 is fixed only after it has been fully rotated into place, avoiding the problem of premature locking caused by vibration or deviation during the rotation of the mechanical buckle. At the same time, the self-holding characteristic of the permanent magnet 8 eliminates the dependence on external energy.

[0058] The permanent magnet 8 is specifically a ring-shaped neodymium iron boron permanent magnet, and its surface is treated with epoxy resin coating to prevent corrosion. During the tensioning process, after the driving anchor plate 35 pushes the limiting plate 61 to rotate about 55°, the permanent magnet 8 generates a stable adsorption force on the limiting plate 61 to achieve fixation.

[0059] Example 2, refer to Figures 4-6 and Figure 10 A recyclable anchor cable device, basically the same as Embodiment 1, except that the movable locking component includes a locking rod 5 slidably mounted on the protective cover body 11. A limiting hole 15 is provided on the outer wall of the protective cover body 11. A plug 51 is fixedly installed at one end of the locking rod 5 extending into the limiting hole 15. A mounting plate 54 is fixedly installed at the other end of the locking rod 5 away from the plug 51. A fourth elastic element 52 is fixedly installed on the mounting plate 54. The other end of the fourth elastic element 52 abuts against and is fixed to the inner wall of the protective cover body 11. A wedge block 55 is fixedly installed on the mounting plate 54. A slot 53 is provided at the end of the locking rod 5 near the wedge block 55. The side wall of the locking rod 5... The upper part is provided with a sliding groove 56, and a limiting block coupled with the sliding groove 56 is provided in the limiting hole 15. The locking part includes a mounting pin 7 and a clamp 71 fixedly connected to the mounting pin 7. A mounting ring is fixedly connected to the inner wall of the protective cover body 11. The mounting pin 7 is slidably mounted on the mounting ring. A fifth elastic element 72 is sleeved on the mounting pin 7. The two ends of the fifth elastic element 72 are respectively abutted and fixed to the clamp 71 and the mounting ring. When the steel strand 21 is tensioned, the driving anchor plate 35 drives the clamp rod 5 to move to the outside of the protective cover body 11 through the inclined surface of the wedge block 55 until the clamp 71 is inserted into the clamp groove 53. At this time, the plug 51 is inserted into the grouting stone body.

[0060] When the steel strand 21 is tensioned, the driving anchor plate 35 moves axially and pushes the wedge block 55, so that the clamping rod 5 overcomes the elastic force of the fourth elastic element 52 and slides to the outside of the protective cover body 11; the coupling relationship between the slide groove 56 and the limiting block constrains the clamping rod 5 to only move linearly along the limiting hole 15, avoiding misalignment caused by rotational degree of freedom; during the movement of the clamping rod 5, the plug 51 is inserted into the grouting stone body to achieve external fixation, and at the same time, the clamping head 71 is aligned with the clamping groove 53 and inserted under the push of the fifth elastic element 72 to fix the clamping rod 5.

[0061] The clamping rod 5 is made of high-strength alloy steel and its surface is hardened to reduce friction. The mounting plate 54 is fixed to the clamping rod 5 with bolts. The fourth elastic element 52 is a stainless steel helical spring, with its two ends abutting against the clamping rod 5 and the inner wall of the protective cover body 11, respectively. The inclined surface of the wedge block 55 is designed with a smooth transition structure to optimize force transmission efficiency. The limiting block is fixed in the limiting hole 15 by welding and forms a tight fit with the slide groove 56.

[0062] In summary, this device, through a reliable triggering action, relies entirely on the natural transmission of tension force without the need for additional torque or external equipment intervention, thus solving the problems of easy corrosion, deformation, and jamming of traditional mechanical unlocking threads, and the failure of unlocking due to torque attenuation along the steel strand 21.

[0063] By enabling the fixing clip 41 to automatically detach from the fixing cone hole 32, the axial force is converted into a radial component force through the cooperation of multiple elastic elements, avoiding friction and jamming, and solving the problem that the fixing clip 41 is stuck in the cone hole and difficult to detach during the traditional anchor cable retrieval.

[0064] The installation process of this device is similar to that of traditional anchor cables, and the recycling operation is simple and does not require complicated procedures, thus solving the problems of cumbersome installation or recycling processes and low operational efficiency of existing recyclable anchor cables.

[0065] The device forms additional anchoring points by inserting the plug 51 into the grouting stone body through the clamp 5. The inner anchor head 3 and the clamp 5 work together to solve the problem of insufficient stability of anchor cable support under complex geological conditions.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention are within the scope of the present invention.

Claims

1. A recyclable anchor cable device, comprising a steel strand (21), an inner anchor head (3), and an isolation sleeve (2) sleeved on the steel strand (21), characterized in that, It also includes an anchor head cover (1), wherein the inner anchor head (3) is disposed inside the anchor head cover (1); The steel strand (21) is fixed to the inner anchor head (3) by a fixing clip (41); The inner wall of the anchor head cover (1) is provided with a movable locking element and a locking element fixing part; Before the steel strand (21) is tensioned, the movable locking member is fixed against the inner anchor head (3). When the steel strand (21) is tensioned, the inner anchor head (3) drives the movable locking member to be fixed against the locking member fixing part, and the contact between the inner anchor head (3) and the movable locking member is canceled. The anchor head cover (1) includes a cover body (11), and the two ends of the cover body (11) are respectively threaded with a cover cone (12) and a cover tail shell (13). The inner anchor head (3) includes a fixed anchor plate (31) threadedly connected to the protective cover body (11). The fixed anchor plate (31) is provided with a fixed cone hole (32). An installation column (33) is fixedly installed on the fixed anchor plate (31). A limit anchor plate (34) is slidably installed on the installation column (33). A second elastic element (36) is fixedly installed on the limit anchor plate (34). A driving anchor plate (35) is fixedly installed on the installation column (33) by bolts and nuts. The diameter of the driving anchor plate (35) is larger than that of the limit anchor plate (34). A sleeve fixing head (22) is fixedly installed on the fixed anchor plate (31). The sleeve fixing head (22) is snapped and fixed with the isolation sleeve (2). A first elastic element (14) is fixedly installed inside the protective cover tail shell (13). The other end of the first elastic element (14) is in contact with the fixed anchor plate (31). When the limiting anchor plate (34) is in contact with the movable locking piece, the first elastic element (14) is in a compressed state. The movable locking component includes a locking rod (5) slidably mounted on the protective cover body (11). A limiting hole (15) is provided on the outer wall of the protective cover body (11). A plug (51) is fixedly installed at one end of the locking rod (5) extending into the limiting hole (15). An mounting plate (54) is fixedly installed at the other end of the locking rod (5) away from the plug (51). A fourth elastic element (52) is fixedly installed on the mounting plate (54). The other end of the fourth elastic element (52) is fixedly abutted against the inner wall of the protective cover body (11). A wedge block (55) is fixedly installed on the mounting plate (54). A locking groove (53) is provided at one end of the locking rod (5) near the wedge block (55). A sliding groove (56) is provided on the side wall of the locking rod (5). A limiting block coupled to the sliding groove (56) is provided in the limiting hole (15). The locking part includes a mounting pin (7) and a clip (71) fixedly connected to the mounting pin (7). A mounting ring is fixedly connected to the inner wall of the protective cover body (11). The mounting pin (7) is slidably mounted on the mounting ring. A fifth elastic element (72) is sleeved on the mounting pin (7). The two ends of the fifth elastic element (72) are respectively fixed to the clip (71) and the mounting ring. When the steel strand (21) is tensioned, the driving anchor plate (35) drives the clamping rod (5) to move to the outside of the protective cover body (11) through the inclined surface of the wedge block (55) until the clamping head (71) is inserted into the clamping groove (53), at which time the plug (51) is inserted into the grouting stone body.

2. The recyclable anchor cable device according to claim 1, characterized in that, The tail of the fixing clip (41) is fixedly installed with a conical abutment (411). When the fixing clip (41) clamps the steel strand (21) and inserts into the fixing cone hole (32), the second elastic element (36) abuts against the conical abutment (411).

3. A recyclable anchor cable device according to claim 2, characterized in that, A clamping sleeve (4) is fixedly installed on the fixed anchor plate (31). The inclined surface of the conical abutment (411) abuts against the inner end face of the clamping sleeve (4). A third elastic element (42) is sleeved on the fixed clamp plate (41). The two ends of the third elastic element (42) abut against the fixed anchor plate (31) and the conical abutment (411) respectively. When the outer anchor head and the steel strand (21) are no longer fixed, the third elastic element (42) rebounds and drives the fixing clip (41) to disengage from the fixing cone hole (32) and the clip fixing sleeve (4).

4. A recyclable anchor cable device according to claim 1, characterized in that, The movable locking component includes a hinge seat (6) fixedly installed on the inner ring of the protective cover body (11). A limiting plate (61) is hinged on the hinge seat (6). When the first elastic element (14) is in a compressed state, the limiting plate (61) abuts against the limiting anchor plate (34). When the steel strand (21) is tensioned, the driving anchor plate (35) drives the limiting plate (61) to rotate, and the locking component fixing part fixes the limiting plate (61).

5. A recyclable anchor cable device according to claim 4, characterized in that, The locking part is a permanent magnet (8) fixedly installed on the inner ring of the protective cover body (11). The limiting plate (61) is a metal plate. During the tensioning process, after the driving anchor plate (35) drives the limiting plate (61) to rotate more than 45°, the permanent magnet (8) adsorbs and fixes the limiting plate (61).

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