Recyclable pre-stressed anchor cable device

Abstract

The embodiment of the utility model provides a recoverable pre-stressed anchor cable device which comprises an anchor cable body used for providing pulling force; the locking nut is arranged at the end part of the anchor cable body and can generate axial pressure through screwing; a gradual change wedge block is embedded in the clamp, and staggered meshing lines are distributed on the surface of the gradual change wedge block to increase the friction coefficient; the recovery sleeve surrounds and wraps the anchor cable body and the locking nut; a high-elasticity buffering material layer is filled between the recycling sleeve and the anchor cable body. The surface of the gradient wedge block of the clamp is coated with a nano ceramic wear-resistant coating. Through the scheme of the embodiment of the invention, the problem of how to ensure that the pre-stressed anchor cable is more stably grabbed when being stressed can be solved, and slippage is prevented.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building structure engineering, and particularly relates to a recyclable prestressed anchor cable device. BACKGROUND

[0002] The recyclable prestressed anchor cable device is a device specially designed for a fixing and supporting system in civil engineering and rock engineering, aiming to provide high reliability, long service life and recyclability. The device transmits force into the stratum through prestress, thereby enhancing the stability of the structure. However, in actual application, the device faces a technical challenge of how to ensure more stable gripping of the prestressed anchor cable under force, preventing slipping. This problem is directly related to the working performance and safety factor of the entire system, because if the clamp cannot firmly grip the anchor cable, slippage may occur under high-strength load, thereby affecting the overall stability and service life of the engineering. SUMMARY

[0003] Therefore, the present application provides a recyclable prestressed anchor cable device, which at least partially solves the problems in the prior art.

[0004] The recyclable prestressed anchor cable device provided by the present application comprises:

[0005] An anchor cable body for providing tension;

[0006] A locking nut arranged at an end of the anchor cable body and capable of generating axial pressure through tightening;

[0007] A clamp internally nested with a gradient wedge, and the surface of the gradient wedge is covered with staggered engagement grooves to enhance the friction coefficient;

[0008] A recovery sleeve surrounding the anchor cable body and the locking nut; wherein

[0009] A high-elasticity buffer material layer is filled between the recovery sleeve and the anchor cable body;

[0010] The surface of the gradient wedge of the clamp is coated with a nano-ceramic wear-resistant coating.

[0011] According to one embodiment, the staggered engagement grooves of the clamp are alternately arranged with oblique teeth and straight teeth, forming a cross grid.

[0012] According to one embodiment, the engagement grooves on the clamp are in V-shaped or trapezoidal structure.

[0013] According to one embodiment, the anchor cable body adopts a double-layer braided sheath structure at the part passing through the clamp.

[0014] According to one embodiment, the double-layer braided sheath structure comprises an inner sheath and an outer sheath, the inner sheath is close to the anchor cable body, and the outer sheath covers the inner sheath.

[0015] According to one embodiment, the end of the locking nut is provided with a spiral anti-skid protrusion.

[0016] According to one embodiment, the spiral anti-skid protrusion is a spiral protrusion with a certain depth and angle.

[0017] According to one embodiment, the clamp is provided with an auxiliary positioning frame, the auxiliary positioning frame is an L-shaped structure, and a positioning bolt is installed on the auxiliary positioning frame, so that additional pressure can be applied to the gradual wedge in the loaded state.

[0018] According to one embodiment, a threaded groove is formed in one end of the anchor cable body close to the clamp.

[0019] The disclosed embodiment provides a recyclable prestressed anchor cable device, which comprises an anchor cable body for providing tension, a locking nut arranged at the end of the anchor cable body and capable of generating axial pressure by being screwed, a clamp internally nested with a gradual wedge, and the surface of the gradual wedge is covered with staggered engagement lines to enhance the friction coefficient, and a recycling sleeve surrounding the anchor cable body and the locking nut, wherein a high-elasticity buffer material layer is filled between the recycling sleeve and the anchor cable body, and a nano-ceramic wear-resistant coating is coated on the surface of the gradual wedge of the clamp. Through the scheme of the disclosed embodiment, the stable gripping of the prestressed anchor cable under stress can be ensured, and slippage can be prevented. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present disclosure, the following will briefly introduce the drawings needed in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be considered as limiting the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0021] Figure 1 is a structural schematic diagram of the recyclable prestressed anchor cable device of the present application;

[0022] Figure 2 is a structural schematic diagram of the connection relationship between the locking nut and the anchor cable body in the recyclable prestressed anchor cable device of the present application;

[0023] Figure 3 is a structural schematic diagram of the clamp in the recyclable prestressed anchor cable device of the present application;

[0024] Figure 4It is the internal structure diagram of the recycling sleeve of the recyclable pre-stressed anchor cable device.

[0025] In the figure: 1, anchor cable body; 11, threaded groove; 2, locking nut; 21, anti-skid protrusion; 3, clamp; 31, occlusal texture; 32, tapered wedge; 321, nano ceramic wear-resistant coating; 33, positioning bolt; 34, positioning frame; 4, recycling sleeve; 41, buffer material layer DETAILED DESCRIPTION

[0026] Hereinafter, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0027] As Figure 1 shown, the recyclable pre-stressed anchor cable device of the application comprises several key components such as anchor cable body 1, locking nut 2, clamp 3 and recycling sleeve 4. In specific structure, anchor cable body 1 is the main force element of the whole device, penetrating and connecting each part, responsible for providing tension and transmitting load. Locking nut 2 is arranged at one end of anchor cable body 1, and axial pressure is applied to other parts inside the device through rotating action.

[0028] The clamp 3 is nested with a tapered wedge 32. The unique structure of the tapered wedge 32 is that the surface is distributed with a plurality of staggered occlusal textures 31, which greatly increases the friction coefficient. When the device begins to bear external applied pressure or tensile load, these tooth-shaped textures will better occlude the power source from the outside, i.e. the anchor cable outer wall, ensuring that the contact surface between the two has very high stability, effectively preventing any possible slip or even disengagement.

[0029] In addition, there is also a covering protection unit, i.e. recycling sleeve 4 wrapped around the outside. It surrounds the aforementioned anchor cable body 1 and locking nut 2, providing an additional barrier for each component to prevent erosion and damage caused by harsh environments, and playing an auxiliary role when the entire device is disassembled or discarded.

[0030] For example, during installation, first fix the anchor cable body 1 in place, then install the pre-prepared clamp 3. Inside the clamp 3, the tapered wedge 32 with staggered occlusal texture 31 design is ready for further operation. Next, install the locking nut 2 and tighten it moderately until enough axial force is generated to ensure that all links are tightly combined without gaps. The last step is to place the specially designed recycling sleeve 4 on the previously assembled part to complete the overall packaging. In this way, the functions and features described above can be achieved.

[0031] In one embodiment, further referring to Figure 3 As shown, the clamp 3 of the recyclable prestressed anchor cable device of the present application is nested with a gradual wedge 32 inside, and the surface of the gradual wedge 32 is covered with staggered engagement grooves 31. The staggered engagement grooves 31 are formed by alternating arrangement of oblique teeth and straight teeth, forming a cross grid, which optimizes the friction characteristics of the contact surface between the clamp 3 and the anchor cable. This design of staggered engagement grooves 31 not only increases the surface roughness, but also effectively disperses the pressure, so that the clamp 3 can more stably fix the outer periphery of the anchor cable, preventing any risk of slipping or disengaging. The design of the staggered engagement grooves 31 improves the friction coefficient by increasing the irregularity and mechanical locking ability on the contact surface, ensuring that the connection performance remains stable under high load conditions.

[0032] Specifically, the clamp 3 is located near the middle of the anchor cable body 1 and is connected to the locking nut 2 through threads or other means. The anchor cable body 1 passes through the clamp 3 and finally reaches the locking nut 2. In order to enhance the bonding strength between the two, a gradual wedge 32 is installed on the inner surface of the clamp 3, and the staggered engagement grooves 31 on it precisely fit the surface of the anchor cable, ensuring a close fit between the two. When the locking nut is tightened, the axial pressure makes the clamp 3 and the wedge tightly hold the anchor cable, ensuring the stability and reliability of the entire system. At the same time, the recycling sleeve 4 wraps around the anchor cable body 1 and the locking nut 2, playing a protective role and realizing the overall recycling operation together with the components.

[0033] In another embodiment, the clamp 3 of the recyclable prestressed anchor cable device of the present application is provided with special engagement grooves 31. The engagement grooves 31 adopt a V-shaped or trapezoidal structure and are located at the position inside the clamp 3 that directly contacts the anchor cable, thereby increasing the embedding stability with the surface of the anchor cable. The clamp 3 is nested with a gradual wedge 32, and the surface of the gradual wedge 32 is covered with staggered engagement grooves 31. These specially shaped grooves significantly increase the friction coefficient, ensuring that the anchor cable can be effectively prevented from slipping during the stress process and enhancing the connection strength. During installation, the axial pressure generated by the tightening of the locking nut 2 promotes the closer embedding of the gradual wedge 32 with the anchor cable, forming a stable overall structure.

[0034] For example, in order to technically realize this feature, during assembly, the gradual wedge 32 with engagement grooves 31 can be inserted into the clamp 3 first, and then the anchor cable body 1 and the clamp 3 are successively sleeved. Next, the locking nut 2 is installed at the end of the anchor cable, and the gradual wedge 32 is compressed in the radial and axial directions by appropriate tightening force, forcing the engagement grooves 31 to firmly grasp the surface of the anchor cable. The entire device is finally covered and encapsulated by the recycling sleeve 4.

[0035] In one embodiment, the anchor body 1 of the recyclable pre-stressed anchor cable device of the present application adopts a double-layer braided sheath structure when passing through the clamp 3. This double-layer braided sheath structure is composed of an inner sheath and an outer sheath. The inner sheath closely adheres to the anchor body 1 and has certain flexibility and wear resistance; the outer sheath covers the inner sheath and further increases the anti-friction ability, thereby effectively reducing the wear and tear between the outer periphery of the anchor body 1 and the clamp 3 during the pre-stress loading process. The anchor body 1 runs through the entire device and has been assembled with the above-mentioned double-layer sheath structure before it passes into the clamp 3.

[0036] The material selection of the double-layer braided sheath needs to consider both strength and flexibility. For example, high-strength nylon or polyester can be selected as the braided material. The main function of the inner sheath is to alleviate the stress generated by direct friction on the anchor itself, while the outer sheath provides an additional protective barrier for the internal and external environment, ensuring reliable connection between the clamp 3 and the anchor body 1. In practical applications, the double-layer sheath can be pre-installed on the long strip-shaped metal anchor to be processed during the prefabrication stage, and then embedded into the system in sequence with the assembly process of subsequent components. Specifically, during the process of leading the anchor body 1 from one end to the other end, the part with a specific length of double-layer braided sheath that has been previously sleeved will naturally slide into the position of the clamp 3, thereby achieving the requirements of structural optimization design and technical features.

[0037] The application of the double-layer braided sheath ensures the durability and reliability of the entire device. When the locking nut 2 applies axial pressure, the high-friction mechanism composed of the tapered wedge 32 and the staggered engagement grooves 31 on its surface fixes the anchor cable, and the double-layer braided sheath plays a particularly significant role in this link. In the case where the recovery sleeve 4 wraps around the anchor body 1 and the locking nut 2, the double-layer braided sheath further improves the safety and stability of the internal parts of the entire assembly, avoiding risks caused by excessive wear and tear.

[0038] In one embodiment, referring back to Figure 2 , the end of the locking nut 2 of the recyclable pre-stressed anchor cable device of the present application is provided with helical anti-slip protrusions 21, which effectively enhance the stability of the locking nut 2 when it exerts pressure on the clamp 3 during tightening. The design of the anti-slip protrusions 21 significantly improves the performance of the device in actual use. Specifically, this special structural arrangement effectively expands the contact area between the locking nut 2 and the clamp 3, thereby enhancing the frictional resistance between them, allowing the locking nut 2 to better transmit axial pressure during the entire installation process and ensuring that the applied pressure is more evenly and stably distributed. In addition, this improvement measure also ensures that the clamp 3 does not accidentally slip or deflect under the condition of bearing tensile stress, thereby ensuring the reliability of the system.

[0039] To achieve this feature, in one embodiment, the spiral anti-skid protrusions 21 can be a structural feature formed on the inner surface of the lock nut 2. Through fine machining technology, a series of regularly distributed, certain depth and angle spiral grooves can be set on the end of the lock nut 2. These grooves can effectively embed into the engagement grooves 31 on the outer peripheral surface of the clamp 3, providing strong gripping force and guiding effect during the rotation and compression of the lock nut 2, thereby improving the stability and durability of the entire device when bearing load. This design does not need to significantly change the structure or assembly process of other components, but only needs to add spiral anti-skid protrusions 21 on the basis of the original design, which is suitable for various application scenarios and has good practicability.

[0040] In one embodiment, as shown in Figure 4 In one embodiment, the high-elasticity buffer material layer 41 is filled between the recovery sleeve 4 and the anchor cable body 1 of the recyclable prestressed anchor cable device. The buffer material layer 41 is mainly composed of elastic material and is located in the gap between the anchor cable body 1 and the recovery sleeve 4 to ensure the protection of the internal components of the device. This design not only protects the components from damage due to external stress or vibration, but also improves the sealing performance of the overall structure, preventing external contaminants or water vapor from entering and affecting the stability and reliability of the internal structure.

[0041] Specifically, this feature achieves more detailed and multi-dimensional functional optimization. By filling the high-elasticity buffer material layer 41, the potential damage risk caused by external physical impact and vibration is effectively reduced, prolonging the service life of the anchor cable body 1 and the attached components. At the same time, the sealing effect of the entire system is improved by using the sealing properties of the buffer material, allowing it to maintain normal operation in more complex operating environments. Further, the high-elasticity feature allows it to maintain a stable form and good recovery ability even under long-term stress, ensuring the functional integrity of the entire device is not compromised. The selection and application of such materials not only enhance the protection effect, but also provide protection for improving work performance.

[0042] For example, materials with excellent compression and rebound properties such as silicone or foam rubber can be selected as the composition of the buffer layer, which is precisely machined and shaped to fit into the pre-designed space area inside the recovery sleeve 4 and the outer surface of the anchor cable body 1, completing assembly. Subsequently, on the basis of ensuring close fitting, the assembly process of other components such as the lock nut 2 is continued.

[0043] In one embodiment, the clamp 3 of the recyclable prestressed anchor cable device of the present application has a gradient wedge 32 nested inside, and the surface of the gradient wedge 32 is coated with a layer of nano-ceramic wear-resistant coating 321 (see Figure 3). This design ensures that the gradual wedge 32 maintains good gripping performance even under long-term use and high-pressure conditions, effectively extending the service life of the device. In addition, the wear-resistant coating further improves the friction and wear resistance between the gradual wedge 32 and the outer periphery of the anchor cable, enabling the clamp 3 to more stably secure the anchor cable body 1 during the bearing of tensile stress and effectively preventing any potential slipping and loosening phenomena.

[0044] Specifically, the gradual wedge 32 closely cooperates with the clamp 3, and the special design of the staggered engagement grooves 31 significantly increases the contact area and friction between the two. The nano-ceramic wear-resistant coating 321 not only enhances the surface hardness and wear resistance, but also improves the bonding strength between the coating and the substrate. This innovative design further enhances the overall performance and service life of the device through the application of material science, suitable for complex engineering environments. For example, during installation, by precisely controlling the size and morphology of the gradual wedge 32 and strictly following the specifications for coating spraying treatment, the practical application of the above technical features can be realized.

[0045] In another exemplary embodiment, the wear-resistant coating can be uniformly applied to the surface of the gradual wedge 32 by selecting high-quality nano-ceramic materials and using plasma spraying and other process methods. Subsequently, during assembly, the integrity of the coating is ensured not to be damaged, so that its excellent wear resistance and reinforcement effect can be fully utilized.

[0046] In one embodiment, with particular reference to Figure 2 , a recyclable pre-stressed anchor cable device of the present application is provided with an auxiliary positioning frame 34, which has a unique structural design. The auxiliary positioning frame 34 is L-shaped, and is installed above the side edge of the clamp 3, tightly adhering to the surface of the clamp 3 through its right-angle edge, ensuring stable installation and preventing displacement. The design of the auxiliary positioning frame 34 enhances the overall performance of the clamp 3 in the loaded state.

[0047] The specific design of the L-shaped auxiliary positioning frame 34 allows the upper end to carry and install a positioning bolt 33, which ensures that the bolt is installed and fixed vertically to the clamp 3. When tightened, the positioning bolt 33 provides downward pressure to the clamp 3 and also acts on the gradual wedge 32. This force ensures that the gradual wedge 32 tightly contacts the anchor cable surface and further enhances the stability between the two through frictional engagement, preventing slipping or disengagement under high stress loading. The application of the positioning bolt 33 also enhances the mechanical strength of the overall system, providing higher safety assurance and ensuring that the gradual wedge 32 maintains good adhesion and stable operation throughout the service life.

[0048] For example, a L-shaped steel of appropriate length and thickness can be precisely welded as an auxiliary positioning bracket 34 after the completion of the jig 3 according to its size. The position of the bracket is carefully measured and positioned on a specific area on the upper side of the jig 3, and ensures that the upper end leaves enough holes for the installation of the positioning bolt 33. This configuration not only achieves effective fixation of the jig 3, but also optimizes the effect between the gradual wedge 32 and the anchor cable.

[0049] In one embodiment, continuing to refer to Figure 2 , the anchor cable body 1 of the recyclable prestressed anchor cable device of the present application is provided with a threaded groove 11 at one end near one side of the jig 3. The threaded groove 11 is designed to facilitate the installation of the locking nut 2 on the anchor cable body 1, and further tightens the device by tightening the locking nut 2. The position of the threaded groove 11 ensures effective combination with other components such as the locking nut 2 and the jig 3, so that these parts can work better together. In addition, the presence of the threaded groove 11 allows more precise adjustment of the tensioning degree of prestress to meet the specific needs in actual application. Since the threaded groove 11 is located at a specific position of the anchor cable body 1, when axial pressure is applied, the force can be more evenly distributed throughout the anchor cable device structure, helping to maintain the long-term stability of the entire system.

[0050] For example, the outer surface of the end of the anchor cable body 1 is precisely machined according to standardized specifications to generate one or several continuous or intermittent threaded grooves 11. These threads are formed by precision CNC machine tools or professional thread rolling equipment, with appropriate lead angle and pitch. Then, use compatible standard or special locking nuts 2, and screw into the threaded groove 11. In order to enhance stability and prevent loosening in high-strength stress environment, special anti-loosening structure or material coating can also be used to assist threaded connection, to ensure reliable operation of the entire anchor cable system in various complex environments.

[0051] In actual operation, when the device is in use, the anchor cable body 1 is inserted into the predetermined position, and then the locking nut 2 is installed at the end of the anchor cable body 1. By rotating the locking nut 2 to apply axial pressure, the anchor cable body 1 is firmly embedded in the structure. During this period, the staggered engagement lines 31 on the surface of the gradual wedge 32 inside the jig 3 enhance the coefficient of friction, ensuring more stable engagement with the outer periphery of the anchor cable and preventing slipping apart. At the same time, the recovery sleeve 4 wraps around the anchor cable body 1 and the locking nut 2, not only providing protection for these components, but also participating in the recovery operation of the entire device. When the prestressed anchor cable device needs to be removed or recycled, the locking nut 2 is unscrewed in reverse, gradually releasing the axial pressure. As the pressure is released, the gradual wedge 32 weakens its grip on the anchor cable, allowing the recovery sleeve 4 to smoothly recover all components as a whole, completing the recycling process of the entire device. The components are assembled in a linear series to ensure the sequence and coordination during operation.

[0052] The methods, programs, systems, devices, etc. of embodiments of the application can be implemented in a single computer or in a distributed computer network. In some embodiments, the methods, programs, systems, devices, etc. of embodiments of the application are implemented in one or more computers or computer networks.

[0053] Exemplary systems and methods of the present application have been described herein in reference to particular embodiments. In light of the teachings herein, those skilled in the art will appreciate that various changes can be made to the embodiments described without departing from the spirit and scope of the application as defined in the appended claims.

Claims

1. A recyclable pre-stressed cable device, characterized in that, The utility model relates to an anchor cable structure, comprising: an anchor cable body (1) for providing tension; a locking nut (2) arranged at the end of the anchor cable body (1) and capable of generating axial pressure by screwing; a clamp (3) internally nested with a gradient wedge (32) and having a surface covered with staggered engagement grooves (31) to enhance the friction coefficient; a recovery sleeve (4) surrounding the anchor cable body (1) and the locking nut (2); wherein a layer of high-elasticity buffer material (41) is filled between the recovery sleeve (4) and the anchor cable body (1); the surface of the gradient wedge (32) of the clamp (3) is coated with a nano-ceramic wear-resistant coating (321).

2. The recyclable pre-stressed cable device according to claim 1, wherein: The staggered engagement grooves (31) of the clamp (3) are formed by alternately arranging oblique teeth and straight teeth to form a cross grid.

3. The recyclable pre-stressed cable device according to claim 1, wherein: The engagement grooves (31) on the clamp (3) are in V-shaped or trapezoidal structure.

4. The recyclable pre-stressed cable device according to claim 1, wherein: The anchor cable body (1) adopts a double-layer braided sheath structure at the part passing through the clamp (3).

5. A recoverable pre-stressed cable device according to claim 4, wherein: The double-layer braided sheath structure comprises an inner sheath closely attached to the anchor cable body (1) and an outer sheath covering the inner sheath.

6. The recyclable pre-stressed cable device of claim 1, wherein: The locking nut (2) is provided with a spiral anti-slip protrusion (21) at the end.

7. A recoverable pre-stressed cable device according to claim 6, wherein: The spiral anti-slip protrusion (21) is a spiral protrusion with a certain depth and angle.

8. The recyclable pre-stressed cable device of claim 1, wherein: The clamp (3) is provided with an auxiliary positioning frame (34) in L-shaped structure and installed with a positioning bolt (33) to additionally apply pressure to the gradient wedge (32) in the loaded state.

9. The recyclable pre-stressed cable device of claim 1, wherein: The anchor cable body (1) is provided with a threaded groove (11) at one end near the clamp (3).

Images