Cable hook for wiring on outer frame

Abstract

The utility model relates to the technical field of constructional engineering power equipment, in particular to a cable hook for routing on an outer frame, which comprises a hook body consisting of an upper bending part, a connecting part and a lower bending part. The upper bent part is provided with an adjustable enclasping assembly and is connected with the outer frame through an upper enclasping plate, a lower enclasping plate and a rubber gasket, and the enclasping distance is adjusted by rotating an adjusting screw rod; the upper bent part is detachably connected with the connecting part, and quick disassembly and assembly are achieved through the quick disassembly assembly. And the clamping assembly in the lower bending part drives the moving block by rotating the screw rod, and cooperates with the fixed clamping pad on the fixed block to clamp the cable, and an independent adjusting assembly is arranged to adjust the clamping force of a single cable. The cable hook solves the problems that a traditional cable is not firm in fixation, inconvenient to install, poor in applicability and the like, achieves firm and convenient fixation of the cable, can adapt to cables of different specifications, and improves the safety and stability of routing of the outer frame cable.

Description

Technical Field

[0001] This application relates to the field of electrical equipment technology in building construction, and in particular to a cable hook for cable routing on scaffolding. Background Technology

[0002] In fields such as building construction and power engineering, it is often necessary to lay and run cables on external scaffolding.

[0003] Currently, traditional cable fixing methods have the following main problems: Common binding methods, such as using wire and cable ties, are prone to loosening due to prolonged exposure to wind, sun, vibration, and other factors, leading to cable falling or shifting. Once a cable falls, it not only affects construction progress and power supply but may also cause safety accidents, threatening construction workers and the surrounding environment. Furthermore, traditional cable fixing devices are often complex in structure and cumbersome in installation, requiring significant manpower and time. Construction workers need to perform multiple steps during installation, such as wrapping and knotting, which is not only inefficient but also increases construction costs. Moreover, in high-altitude working environments, the complex installation operations increase the difficulty of work and safety risks for construction workers. In addition, existing cable fixing devices generally lack the function of adjusting the cable clamping force, making it impossible to adjust the fixing force of the cable according to actual needs. If the clamping force is too large, it may damage the cable sheath, affecting the cable's service life and electrical performance; if the clamping force is too small, it cannot guarantee the stable fixing of the cable. Furthermore, when fixing multiple cables simultaneously, it is difficult to adjust the clamping force of each individual cable individually, making it impossible to meet the fixing requirements of different cables.

[0004] To address this problem, a cable hook for cable routing on external frames was invented. Utility Model Content

[0005] The purpose of this utility model is to provide a cable hook for cable routing on external racks, which solves the problems of unstable fixing, inconvenient installation, poor applicability and lack of adjustment function of existing external rack cable fixing devices. It can achieve a firm and convenient fixing of cables, adapt to the installation requirements of cables of different specifications, and flexibly adjust the clamping force on the cables, thereby improving the safety and stability of cable routing.

[0006] This application provides a cable hook for cable routing on an external frame, which adopts the following technical solution: it includes a hook body, wherein the hook body is composed of an upper bend, a lower bend, and a connecting part connecting the two. The upper bend and the lower bend are located on the upper and lower sides of the connecting part, respectively. The upper bend is used to connect to the cable frame, and the lower bend is used to clamp and fix the cable. The lower bend is provided with a clamping component for clamping the cable.

[0007] Optionally, the upper curved portion is provided with an adjustable clamping assembly that can be connected to the outer frame. The adjustable clamping assembly includes an upper clamping plate and a lower clamping plate. Rubber pads are respectively provided on opposite sides of the upper and lower clamping plates. A vertically rotatable adjusting screw is provided on the lower clamping plate. The adjusting screw is threadedly connected to the upper clamping plate. The upper and lower clamping plates are slidably connected. The distance between the upper and lower clamping plates can be adjusted by rotating the adjusting screw.

[0008] Optionally, both rubber pads may have anti-slip textures on their surfaces.

[0009] Optionally, the upper bend and the connecting part are detachable. The bottom of the upper bend is provided with a connecting block, the connecting block is provided with a mating hole, the bottom of the connecting block is provided with a plug that can be inserted into the mating hole, and the connecting block is provided with a quick-release component that can quickly detach and install the plug.

[0010] Optionally, the quick-release assembly includes multiple limiting grooves, which are evenly distributed circumferentially around the periphery of the insertion post. A slidable limiting rod is provided inside the connecting block. A limiting protrusion that can be inserted into the limiting groove is provided on the side of the limiting rod near the insertion post. A compression spring is fitted on the limiting rod, and the other end of the compression spring is fixed inside the connecting block. A pull ring is provided on the end of the limiting rod that is close to the insertion post.

[0011] Optionally, the bottom of the insert is provided with a connecting bolt, and the lower bend is provided with a threaded hole that can be threaded with the connecting bolt.

[0012] Optionally, the clamping assembly includes a fixing block with a plurality of vertically arranged fixing clamping pads on the fixing block. The bottom of the lower bend has a horizontally sliding movable block with movable clamping pads corresponding one-to-one with the fixing clamping pads. The bottom of the lower bend has a rotatable rotating screw. The movable block is threadedly connected to the rotating screw. The clamping and fixing of the cable can be achieved through the cooperation between the movable clamping pads and the fixing clamping pads.

[0013] Optionally, the lower bend is provided with a separate adjustment component that can adjust the clamping force of a single cable. The separate adjustment component includes a sliding column that can slide horizontally on the fixed block. The sliding column is fixedly connected to the fixed clamping pad on its corresponding side. An adjustment stud is threaded onto the lower bend. The adjustment stud and the sliding column are rotatably connected. When the adjustment stud rotates, it pushes the sliding column to move.

[0014] In summary, this application includes the following beneficial technical effects:

[0015] 1. Secure and reliable fixing: By setting an adjustable clamping component, the upper clamping plate and the lower clamping plate, together with the rubber pad, can tightly clamp the outer frame to prevent the cable hook from loosening and shifting; the clamping component in the lower bend can firmly clamp the cable to prevent the cable from falling or shifting, which greatly improves the safety of cable routing.

[0016] 2. Easy and efficient installation: The adjustable clamping component can be connected and fixed to the outer frame by rotating the adjusting screw, which is simple and convenient to operate; the quick-release component between the upper bend and the connecting part makes it easier to disassemble and assemble the hook parts, which is convenient for installation and maintenance, saves a lot of manpower and time costs, and improves construction efficiency.

[0017] 3. High Applicability: The detachable connection method between the upper bend and the connecting part, as well as the design of the clamping component and the individual adjustment component, allow this cable hook to adapt to cables of different specifications and models. Whether the cable is thin or thick, it can be firmly fixed by adjusting the relevant components, thus expanding the application range of the cable hook.

[0018] 4. Flexible adjustment function: The individual adjustment component can precisely adjust the clamping force of a single cable, which can ensure the stable fixation of the cable without damaging the cable sheath due to excessive clamping force; the clamping component can achieve overall clamping of the cable by rotating the screw, which can meet the needs of fixing multiple cables at the same time, and can flexibly adjust the clamping force according to the actual situation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ;

[0020] Figure 2 This is a schematic diagram of the overall structure of the device. Figure II ;

[0021] Figure 3 This is the front view of the device;

[0022] Figure 4 This is a cross-sectional schematic diagram of the overall structure of this device;

[0023] Figure 5 This is a schematic diagram of the connection part of this device;

[0024] The components include: 1. Hook body; 2. Upper bend; 3. Lower bend; 4. Connecting part; 5. Clamping assembly; 6. Adjustable clamping assembly; 7. Upper clamping plate; 8. Lower clamping plate; 9. Rubber pad; 10. Adjusting screw; 11. Anti-slip texture; 12. Connecting block; 13. Docking hole; 14. Insert post; 15. Quick release assembly; 16. Limiting groove; 17. Limiting rod; 18. Limiting protrusion; 19. Compression spring; 20. Pull ring; 21. Connecting bolt; 22. Fixing block; 23. Fixing clamping pad; 24. Moving block; 25. Moving clamping pad; 26. Rotating screw; 27. Individual adjustment assembly; 28. Sliding post; 29. ​​Adjusting stud. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., 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 the present utility model 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, they should not be construed as limitations on the present utility model.

[0026] Reference Figure 1 One embodiment shown is a cable hook for cable routing on an external frame, comprising a hook body 1. In this embodiment, the hook body 1 consists of an upper bend 2, a lower bend 3, and a connecting part 4 connecting the two. The upper bend 2 is located above the connecting part 4, fixing the entire cable hook to the external frame. The lower bend 3 is located below the connecting part 4, and its internal space is used to accommodate the cable, which is clamped and fixed by a clamping assembly 5. The connecting part 4 acts as a bridge between the upper bend 2 and the lower bend 3, serving to transmit force and connect the structure, ensuring that the entire hook body 1 forms a stable whole.

[0027] The implementation principle of the above embodiment is as follows: The cable hook is installed on the outer frame through the connection between the upper bend 2 and the outer frame, providing a support point for the cable. The clamping component 5 within the lower bend 3 applies clamping force to the cable, fixing it within the lower bend 3 and preventing it from moving or falling under external force, thus achieving orderly routing and safe fixation of the cable on the outer frame. The connection relationship between the upper bend 2, the connecting part 4, and the lower bend 3 ensures the structural stability of the entire device, enabling the cable hook to withstand the weight of the cable and the influence of external environmental factors.

[0028] Reference Figure 1 , Figure 2One embodiment shown is as follows: The adjustable clamping assembly 6 on the upper bend 2 includes an upper clamping plate 7 and a lower clamping plate 8. In this embodiment, the upper clamping plate 7 and the lower clamping plate 8 are located on both sides of the upper bend 2 and are arranged opposite to each other. Rubber pads 9 are fixedly provided on the opposite sides of the upper clamping plate 7 and the lower clamping plate 8 by pasting or embedding. The rubber pads 9 are made of a material with a certain elasticity and friction, which can increase the contact area and friction with the surface of the outer frame. A vertically rotatable adjusting screw 10 is provided on the lower clamping plate 8. The lower end of the adjusting screw 10 is rotatably connected to the lower clamping plate 8 through a bearing, so that the adjusting screw 10 can rotate freely on the lower clamping plate 8. The upper end of the adjusting screw 10 passes through the upper clamping plate 7 and is threadedly connected to the upper clamping plate 7. The upper clamping plate 7 has a threaded hole adapted to the adjusting screw 10. Meanwhile, the upper clamping plate 7 and the lower clamping plate 8 are slidably connected. In specific implementation, for example, a guide post is set on the lower clamping plate 8 and a guide hole is opened on the upper clamping plate 7. The guide post is inserted into the guide hole to ensure that the upper clamping plate 7 can slide smoothly in the vertical direction under the action of the adjusting screw 10.

[0029] The implementation principle of the above embodiment is as follows: When it is necessary to fix the cable hook to the outer frame, the upper clamping plate 7 and the lower clamping plate 8 are placed on the upper and lower sides of the outer frame respectively, and then the adjusting screw 10 is rotated. Since the adjusting screw 10 is threadedly connected to the upper clamping plate 7, as the adjusting screw 10 rotates, the upper clamping plate 7 will move along the axial direction of the adjusting screw 10, thereby changing the distance between the upper clamping plate 7 and the lower clamping plate 8. By adjusting this distance, the rubber pad 9 is tightly attached to the surface of the outer frame, and the elasticity and anti-slip properties of the rubber pad 9 are used to achieve a firm grip on the outer frame. This adjustable gripping method can adapt to outer frames of different sizes and shapes, improving the versatility and applicability of the cable hook.

[0030] Reference Figure 1 , Figure 2 , Figure 3 One embodiment shown is as follows: Anti-slip textures 11 are formed on the surfaces of both rubber pads 9. In this embodiment, the anti-slip textures 11 can take various forms, such as serrated, mesh-like, or wavy. The anti-slip textures 11 are directly machined onto the surface of the rubber pads 9, increasing friction by increasing surface roughness. The rubber pads 9 are fixed to the opposite sides of the upper clamping plate 7 and the lower clamping plate 8 respectively by strong adhesives or other fixing methods, ensuring that the rubber pads 9 will not shift or fall off during the clamping of the outer frame.

[0031] The implementation principle of the above embodiment is as follows: When the adjustable clamping component 6 clamps the outer frame, the anti-slip texture 11 on the surface of the rubber pad 9 makes full contact with the surface of the outer frame, increasing the friction between the two. This friction can effectively prevent the cable hook from sliding or shaking on the outer frame, improving the stability of the fixation. At the same time, the elasticity of the rubber pad 9 can also buffer the unevenness of the outer frame surface, making the clamping force distribution more uniform and further enhancing the clamping effect.

[0032] Reference Figure 3 , Figure 4 , Figure 5 One embodiment shown is as follows: the upper bend 2 and the connecting part 4 are detachably connected. In this embodiment, the bottom of the upper bend 2 is integrally formed or fixedly provided with a connecting block 12 by welding or other means. The connecting block 12 has a block structure and a mating hole 13 is provided at its bottom. The top of the connecting part 4 is provided with a post 14 that can be inserted into the mating hole 13. The shape of the post 14 is adapted to the mating hole 13 and can be tightly inserted into the mating hole 13. The connecting block 12 is provided with a quick-release assembly 15 that allows for quick assembly and disassembly of the post 14. The quick-release assembly 15 enables quick connection and disassembly between the upper bend 2 and the connecting part 4.

[0033] The implementation principle of the above embodiment is as follows: When installing the cable hook, the insert 14 at the top of the connecting part 4 is inserted into the mating hole 13 of the connecting block 12 at the bottom of the upper bend 2. Then, the insert 14 is fixed in the mating hole 13 by the quick-release assembly 15, thus achieving a stable connection between the upper bend 2 and the connecting part 4. When it is necessary to disassemble or replace the parts, the quick-release assembly 15 is operated to release the fixation of the insert 14, thereby separating the upper bend 2 from the connecting part 4. This disassembly and connection method facilitates the transportation, installation, and maintenance of the cable hook, improving work efficiency.

[0034] Reference Figure 4 , Figure 5 One embodiment shown is as follows: The quick-release assembly 15 includes multiple limiting grooves 16. In this embodiment, the multiple limiting grooves 16 are evenly distributed circumferentially on the peripheral surface of the insertion post 14. The limiting grooves 16 are rectangular or trapezoidal in shape, etc., and can cooperate with the limiting protrusions 18. A slidable limiting rod 17 is provided in the connecting block 12. The limiting rod 17 slides through a guide groove or guide rail opened in the connecting block 12, ensuring that the limiting rod 17 can move smoothly in the horizontal direction within the connecting block 12. A limiting protrusion 18 that can be inserted into the limiting groove 16 is integrally formed or fixed by welding or other means on the side of the limiting rod 17 near the insertion post 14. The shape of the limiting protrusion 18 is adapted to the limiting groove 16. A compression spring 19 is fitted on the limiting rod 17. One end of the compression spring 19 abuts against the protrusion on the limiting rod 17, and the other end is fixed to the spring seat in the connecting block 12. A pull ring 20 is provided on the end of the limit rod 17 away from the insertion post 14 by means of welding or threaded connection, so that the operator can easily pull the limit rod 17.

[0035] The implementation principle of the above embodiment is as follows: When the insert 14 is inserted into the docking hole 13, the limiting protrusion 18 is pressed into the limiting groove 16 under the action of the compression spring 19, locking the insert 14 in the docking hole 13 and preventing the insert 14 from loosening or falling out. When disassembly is required, pull the pull ring 20 to make the limiting rod 17 move outward against the elastic force of the compression spring 19, and the limiting protrusion 18 exits from the limiting groove 16. At this time, the insert 14 can be freely pulled out of the docking hole 13. The function of the compression spring 19 is to provide continuous pressure to ensure that the limiting protrusion 18 always remains in the limiting groove 16, ensuring the reliability of the connection. This quick-release assembly 15 has a simple structure and is easy to operate, enabling quick assembly and disassembly between the upper bend 2 and the connecting part 4.

[0036] Reference Figure 3 , Figure 4 , Figure 5 One embodiment shown is as follows: a connecting bolt 21 is provided at the bottom of the insert post 14. In this embodiment, an installation hole is provided at the bottom of the insert post 14, and the connecting bolt 21 passes through the installation hole. A threaded hole that can be threaded with the connecting bolt 21 is provided on the lower bend 3. The position of the threaded hole corresponds to that of the connecting bolt 21, and the thread specification matches that of the connecting bolt 21.

[0037] The implementation principle of the above embodiment is as follows: When installing the cable hook, after inserting the plug 14 into the mating hole 13 and fixing it with the quick-release assembly 15, align the connecting bolt 21 with the threaded hole on the lower bend 3, and then rotate the plug 14 or the lower bend 3 to screw the connecting bolt 21 into the threaded hole, thus achieving a firm connection between the plug 14 and the lower bend 3. This threaded connection method has high connection strength and stability, ensuring that the upper bend 2, the connecting part 4, and the lower bend 3 form a stable whole, jointly bearing the weight of the cable and external forces. At the same time, the threaded connection also facilitates the disassembly and replacement of parts; when a part is damaged, it can be disassembled individually for repair or replacement.

[0038] Reference Figure 3 , Figure 4One embodiment shown is as follows: The clamping assembly 5 includes a fixing block 22. In this embodiment, the fixing block 22 is fixed to the inner wall of the lower bend 3 by welding or bolting, and is located at the upper part of the lower bend 3. The fixing block 22 is provided with a plurality of vertically arranged fixing clamping pads 23. The fixing clamping pads 23 are disposed on the surface of the fixing block 22, and are typically made of elastic materials such as rubber or silicone, which can better protect the cable sheath. A horizontal groove is formed at the bottom of the lower bend 3, and a horizontally sliding movable block 24 is disposed within the groove. The bottom of the movable block 24 is adapted to the groove and can slide freely within it. The movable block 24 is provided with movable clamping pads 25 corresponding one-to-one with the fixing clamping pads 23, and the fixing method of the movable clamping pads 25 is the same as that of the fixing clamping pads 23. The bottom of the lower bend 3 is also provided with a rotatable rotating screw 26. One end of the rotating screw 26 is rotatably connected to one side wall of the lower bend 3 through a bearing, and the other end passes through the movable block 24 and is rotatably connected to the other side wall of the lower bend 3. The movable block 24 is provided with a threaded hole that matches the rotating screw 26, and the rotating screw 26 is threadedly connected to the movable block 24.

[0039] The implementation principle of the above embodiment is as follows: When it is necessary to clamp the cable, the cable is placed between the fixed clamping pad 23 and the movable clamping pad 25, and then the rotating screw 26 is rotated. Since the rotating screw 26 is threadedly connected to the movable block 24, as the rotating screw 26 rotates, the movable block 24 moves horizontally along the slide groove, causing the movable clamping pad 25 to move closer to the fixed clamping pad 23, thereby applying a clamping force to the cable. By controlling the rotation direction and angle of the rotating screw 26, the moving distance of the movable block 24 can be adjusted, thereby adjusting the magnitude of the clamping force and achieving effective clamping and fixing of cables of different specifications. The elastic material of the fixed clamping pad 23 and the movable clamping pad 25 can increase the friction with the cable while avoiding damage to the cable sheath.

[0040] Reference Figure 2 , Figure 4 One embodiment shown is as follows: The lower bend 3 is equipped with a separate adjustment component 27 for adjusting the clamping force of a single cable. In this embodiment, the separate adjustment component 27 includes a sliding post 28 that can slide horizontally on a fixed block 22. The fixed block 22 has a horizontal sliding hole, and the sliding post 28 is inserted into the sliding hole, allowing it to slide freely within the hole. One end of the sliding post 28 is fixedly connected to the corresponding side of the fixed clamping pad 23 by welding or threaded connection, and the other end extends to the outside of the lower bend 3. An adjusting stud 29 is threadedly connected to the lower bend 3. The axis of the adjusting stud 29 coincides with the axis of the sliding post 28. One end of the adjusting stud 29 is rotatably connected to the end of the sliding post 28 via a bearing, so that when the adjusting stud 29 rotates, it can push the sliding post 28 to move, but will not cause the sliding post 28 to rotate together.

[0041] The implementation principle of the above embodiment is as follows: When it is necessary to adjust the clamping force of a certain cable, the corresponding adjusting stud 29 is rotated. Since the adjusting stud 29 is threadedly connected to the lower bend 3, as the adjusting stud 29 rotates, it will move axially, thereby pushing the sliding column 28 to move horizontally within the sliding hole of the fixed block 22. The movement of the sliding column 28 will drive the fixed clamping pad 23 connected to it to move, changing the distance between the fixed clamping pad 23 and the moving clamping pad 25, thereby adjusting the clamping force of the cable. This individual adjustment component 27 can independently adjust the clamping force for each cable, ensuring that each cable receives a suitable fixing force, thus improving the applicability and reliability of the cable hook.

[0042] The working principle of this device is as follows: In use, first place the upper bend 2 on the outer frame, rotate the adjusting screw 10 to make the upper and lower clamping plates 8 clamp the outer frame through the rubber pads 9, completing the hook installation. The upper bend 2 and the connecting part 4 cooperate through the insertion post 14 and the docking hole 13. The limiting protrusion 18 of the quick-release component 15 is locked into the limiting groove 16 of the insertion post 14 under the action of the compression spring 19 to achieve fixation. The bolt at the bottom of the insertion post 14 is connected to the threaded hole of the lower bend 3 to ensure overall stability. When installing cables, place them in the lower bend 3, rotate the rotating screw 26, and move the moving clamping pad 25 on the moving block 24 closer to the fixed clamping pad 23 to achieve overall clamping of the cable. If it is necessary to adjust the clamping force of a single cable, rotate the adjusting screw 29 to push the sliding post 28 to move, changing the position of the corresponding fixed clamping pad 23, and precisely adjusting the clamping force. Through the coordinated operation of each component, reliable fixing and routing of cables on the outer frame are achieved.

[0043] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cable hook for cabling on an external scaffold, comprising a hook body (1), characterized in that: The hook body (1) is composed of an upper bend (2), a lower bend (3) and a connecting part (4) connecting the two. The upper bend (2) and the lower bend (3) are located on the upper and lower sides of the connecting part (4), respectively. The upper bend (2) is used to connect the cable frame, and the lower bend (3) is used to clamp and fix the cable. The lower bend (3) is provided with a clamping component (5) that can clamp the cable.

2. The cable hanger for cabling on an external shelf according to claim 1, characterized in that: An adjustable clamping assembly (6) that can be connected to the outer frame is provided on the upper curved part (2). The adjustable clamping assembly (6) includes an upper clamping plate (7) and a lower clamping plate (8). Rubber pads (9) are provided on opposite sides of the upper clamping plate (7) and the lower clamping plate (8). A vertically rotatable adjusting screw (10) is provided on the lower clamping plate (8). The adjusting screw (10) is threadedly connected to the upper clamping plate (7). The upper clamping plate (7) and the lower clamping plate (8) are slidably connected. The distance between the upper clamping plate (7) and the lower clamping plate (8) can be adjusted by rotating the adjusting screw (10).

3. A cable hanger for cabling on an external shelf according to claim 2, characterized in that: The surfaces of both rubber pads (9) are provided with anti-slip textures (11).

4. The cable hanger for cabling on an external shelf according to claim 1, characterized in that: The upper bend (2) and the connecting part (4) are detachably connected. The bottom of the upper bend (2) is provided with a connecting block (12). The connecting block (12) is provided with a docking hole (13). The bottom of the connecting block (12) is provided with a plug (14) that can be inserted into the docking hole (13). The connecting block (12) is provided with a quick-release component (15) that can quickly detach and install the plug (14).

5. A cable hanger for cabling on an external shelf according to claim 4, characterized in that: The quick-release assembly (15) includes multiple limiting grooves (16), which are evenly distributed around the periphery of the insert (14). A slidable limiting rod (17) is provided in the connecting block (12). A limiting protrusion (18) that can be inserted into the limiting groove (16) is provided on the side of the limiting rod (17) near the insert (14). A compression spring (19) is fitted on the limiting rod (17). The other end of the compression spring (19) is fixed in the connecting block (12). A pull ring (20) is provided on the end of the limiting rod (17) that is away from the insert (14).

6. A cable hook for cable routing on an external frame according to claim 4, characterized in that: The bottom of the insert (14) is provided with a connecting bolt (21), and the lower bend (3) is provided with a threaded hole that can be threadedly engaged with the connecting bolt (21).

7. The cable hook for cabling on an external shelf according to claim 1, wherein: The clamping assembly (5) includes a fixed block (22), on which a plurality of fixed clamping pads (23) are arranged vertically. The bottom of the lower bend (3) is provided with a horizontally sliding movable block (24), on which a movable clamping pad (25) is provided corresponding to the fixed clamping pads (23). The bottom of the lower bend (3) is provided with a rotatable rotating screw (26). The movable block (24) and the rotating screw (26) are threadedly connected. The clamping and fixing of the cable can be achieved through the cooperation between the movable clamping pads (25) and the fixed clamping pads (23).

8. A cable hook for cabling on an external shelf according to claim 7, characterized in that: The lower bend (3) is provided with a separate adjustment component (27) that can adjust the clamping force of a single cable. The separate adjustment component (27) includes a sliding column (28) that can slide horizontally on the fixed block (22). The sliding column (28) is fixedly connected to the fixed clamping pad (23) on its corresponding side. An adjustment stud (29) is threadedly connected to the lower bend (3). The adjustment stud (29) and the sliding column (28) are rotatably connected. When the adjustment stud (29) rotates, it pushes the sliding column (28) to move.

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