Cable conduit and its assembly and disassembly devices

Abstract

This utility model provides a cable conduit and its assembly and disassembly device, characterized in that it includes a conduit body, a cable and a self-tightening assembly. The conduit body has an axially variable cavity with an opening diameter smaller than the inner cavity diameter. The cable passes through the conduit body. The self-tightening assembly is composed of multiple foam blocks arranged in segments along the axial direction of the conduit body and radially pressed against the inner cavity wall of the conduit body. The self-tightening assembly is provided with a cable groove that passes through the axial direction of the conduit body, and the cable passes through the cable groove and extends out from the port of the conduit body.

Description

Technical Field

[0001] This utility model relates to the field of cable technology, specifically to a cable conduit and its assembly and disassembly device. Background Technology

[0002] In cable laying in aerospace, shipbuilding, and high-end equipment industries, cables often need to be run through narrow, variable-diameter cable conduits. These spaces are characterized by narrow operating channels and gradually changing radial dimensions. Traditional fixing methods have the following drawbacks: The method of fixing cables by wrapping both ends with felt has limitations. The felt material is soft and prone to producing excess material. Furthermore, when the cable vibrates during operation, the felt cannot provide stable restraint, easily leading to cable overload, wear, or even breakage. This method fails to meet the vibration protection and long-term stability requirements of high-reliability scenarios. In addition, existing rigid brackets or clip structures cannot accommodate variable-diameter cavities and are difficult to assemble in confined spaces. The filled foam material, once cured, is non-removable, resulting in poor maintainability and potential compression damage to the cable.

[0003] Therefore, there is an urgent need to develop a tool-free, self-locking, highly reliable cable conduit that can be quickly assembled and disassembled. Utility Model Content

[0004] This utility model provides a cable conduit to at least solve the problems of low reliability, easy generation of excess material, and difficulty in disassembly and assembly of existing cable laying methods for narrow and variable diameter spaces.

[0005] To achieve the above objectives, this utility model provides a cable conduit, comprising: The tube body has an axially variable diameter cavity with an opening diameter smaller than the inner diameter; The cable is threaded through the conduit. The self-tightening assembly consists of multiple foam blocks arranged in segments along the axial direction of the tube and radially pressed against the inner wall of the tube. The self-tightening assembly is provided with a cable groove that runs through the axial direction of the tube, and the cable passes through the cable groove and extends out from the port of the tube.

[0006] Furthermore, the self-tightening assembly includes: Two first foam blocks are respectively disposed at the two ends of the tube body, and a first inclined surface is provided at the end facing the inside of the tube body; Multiple second foam blocks are arranged sequentially between two first foam blocks along the axial direction of the tube body, and each second foam block has a second inclined surface and a third inclined surface at both ends of its axial direction. The first inclined surface of the first foam block complements the second inclined surface of the adjacent second foam block, and the two adjacent second foam blocks complement each other through the third inclined surface and the second inclined surface.

[0007] Furthermore, the second and third inclined surfaces of the second foam block are arranged symmetrically.

[0008] Furthermore, the inclination angles of the first, second, and third inclined planes are 45°±2°.

[0009] Furthermore, the self-tightening assembly also includes: Two sealing foam blocks are fixed to the two ends of the tube body and abut against the end face of the first foam block.

[0010] Furthermore, the two sealing foam blocks are fixed to the two ends of the tube body with adhesive.

[0011] Furthermore, the width of the cable trough is adapted to the diameter of the cable.

[0012] Furthermore, the self-tightening assembly is made of polymethacrylimide foam.

[0013] This utility model provides a cable conduit assembly device, applied to the aforementioned cable conduit, comprising: control lever; A pusher is provided at the front end of the operating lever. The pusher is wedge-shaped to cooperate with the inclined surfaces of the first foam block and the second foam block. A positioning boss is provided at the front end of the pusher for fitting into the cable groove.

[0014] This utility model provides a cable conduit disassembly device, applied to the aforementioned cable conduit, comprising: Tow bar; A threaded head, located at the front end of the traction rod, is used to screw into the inclined surfaces of the first and second foam blocks to remove them.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows: This invention utilizes the inclined self-locking structure of segmented foam blocks, which automatically converts into radial expansion force during axial assembly. This allows the foam blocks to tightly adhere to the inner wall of the cable conduit with varying diameter, forming a continuous and stable radial constraint. This effectively improves the stability and reliability of the cable, solves the problem of overload wear or breakage caused by cable swaying, and meets the vibration protection and long-term stability requirements of high-reliability scenarios.

[0016] Made of polymethacrylimide foam, it leaves no excess material during installation. With the help of assembly and disassembly fixtures, it can quickly assemble and disassemble modular foam blocks, effectively improving installation and maintenance efficiency and overcoming the shortcomings of traditional foam materials that cannot be disassembled after curing. Attached Figure Description

[0017] Figure 1This is a schematic cross-sectional view of the cable conduit body of this utility model; Figure 2 This is a schematic diagram of the self-tightening assembly of the cable conduit of this utility model. Figure 3 This is a schematic diagram of the first foam block structure of this utility model; Figure 4 This is a schematic diagram of the second foam block structure of this utility model; Figure 5 This is a schematic diagram of the sealing foam block structure of this utility model; Figure 6 This is a schematic diagram of the cable pipe assembly device of this utility model; Figure 7 This is a schematic diagram of the cable pipe disassembly device of this utility model.

[0018] In the above image: 1. Pipe body; 2. Cables; 3. First foam block; 31. First inclined plane; 4. Second foam block; 41. Second inclined plane; 42. Third inclined plane; 5. Sealing foam blocks; 6. Cable trough; 7. Cable conduit assembly device; 71. Operating lever; 72. Pushing part; 721. Positioning boss; 8. Cable pipe dismantling device; 81. Traction rod; 82. Threaded head. Detailed Implementation

[0019] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] In the description of this application, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "level," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application 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, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0021] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0022] like Figure 1 As shown, currently, the method for fixing the cable 2 in a long, narrow operating space with a small opening diameter and a large inner cavity diameter is usually to wrap both ends of the cable 2 with felt and fix it to the opening of the narrow space. However, this method of fixing the cable 2 with felt is problematic because the felt material is soft and prone to producing excess material. Furthermore, when the cable 2 shakes during operation, the felt cannot provide stable restraint, which can easily lead to overload, wear, or even breakage of the cable 2. This makes it difficult to meet the vibration protection and long-term stability requirements of high-reliability scenarios.

[0023] This utility model provides a cable conduit to at least solve the problems of low reliability, easy generation of excess material, and difficulty in disassembly and assembly of existing cable laying methods for narrow and variable diameter spaces.

[0024] This utility model provides a cable conduit, such as Figures 1-2 As shown, it includes a pipe body 1, a cable 2, and a self-tightening assembly.

[0025] The tube body 1 has an axially variable cavity with an opening diameter smaller than the inner diameter.

[0026] Cable 2 is run through the conduit 1.

[0027] The self-tightening assembly consists of multiple foam blocks arranged in segments along the axial direction of the tube body 1 and radially pressed against the inner wall of the tube body 1. The self-tightening assembly is provided with a cable groove 6 that runs through the axial direction of the tube body 1. The cable 2 passes through the cable groove 6 and extends out from the port of the tube body 1.

[0028] In some embodiments, the cable trough 6 is composed of multiple segmented troughs independently opened on each foam block. When all the foam blocks are aligned along the axial direction of the pipe body 1, the segmented troughs are connected end to end in the axial direction to form a continuous through channel, so that the cable 2 is constrained on the same axis throughout the entire length of the pipe body 1.

[0029] Preferably, such as Figures 2-4 As shown, the self-tightening assembly includes two first foam blocks 3 and multiple second foam blocks 4.

[0030] Two first foam blocks 3 are respectively disposed at the two ends of the tube body 1, and a first inclined surface 31 is provided at the end facing the inside of the tube body 1.

[0031] Multiple second foam blocks 4 are arranged sequentially between two first foam blocks 3 along the axial direction of the tube body 1. Each second foam block 4 has a second inclined surface 41 and a third inclined surface 42 at both ends of its axial direction.

[0032] The first inclined surface 31 of the first foam block 3 complements the second inclined surface 41 of the adjacent second foam block 4, and the two adjacent second foam blocks 4 complement each other through the third inclined surface 42 and the second inclined surface 41.

[0033] Preferably, the second inclined surface 41 and the third inclined surface 42 of the second foam block 4 are arranged symmetrically.

[0034] Preferably, the inclination angles of the first inclined surface 31, the second inclined surface 41, and the third inclined surface 42 are 45°±2°.

[0035] In some embodiments, the 45° inclined plane structure converts the axial assembly force into a radial expansion force, enabling the foam block to adapt to the gradual change in the inner cavity size of the tube body 1, thus solving the defect of uneven local gaps between the traditional rigid support and the cavity.

[0036] Meanwhile, the inclined interlocking structure can effectively suppress the micro-displacement of the foam block under vibration, avoid overload wear or even cut of the cable 2 due to shaking, and improve reliability.

[0037] Preferably, such as Figure 2 and Figure 5 As shown, the self-tightening assembly also includes two sealing foam blocks 5.

[0038] Two sealing foam blocks 5 are fixed to the two ends of the tube body 1 and abut against the end face of the first foam block 3.

[0039] Preferably, the two sealing foam blocks 5 are fixed to the two ends of the pipe body 1 by adhesive.

[0040] In some embodiments, adhesive is used to fix the sealing foam block 5 to both ends of the pipe body 1, which serves to seal and prevent dust, allowing the cable 2 to maintain long-term reliability in environments with high humidity. At the same time, the sealing foam block 5 abuts against the end face of the first foam block 3 to form an axial force transmission chain, which increases the radial clamping force of the inclined self-locking structure and provides a function to suppress vibration displacement.

[0041] Preferably, the width of the cable trough 6 is adapted to the diameter of the cable 2.

[0042] In some embodiments, the cable 2 is not limited to a single cable, but can be configured as a bundle of cables 2, and is not limited to a fixed model. The width of the cable groove 6 is determined according to the actual diameter of the cable 2 to ensure the stability of the cable 2 and to make it highly versatile.

[0043] Preferably, the self-tightening assembly is made of polymethacrylimide foam.

[0044] In some embodiments, polymethacrylimide foam has high compressive strength, which prevents the inclined self-locking structure from plastically deforming under radial clamping force, thus ensuring long-term dimensional stability in narrow spaces.

[0045] like Figure 6 As shown, this utility model provides a cable pipe assembly device 7, which is applied to the above-mentioned cable pipe, including an operating rod 71 and a pushing part 72.

[0046] The pusher 72 is located at the front end of the operating lever 71. The pusher 72 is wedge-shaped to cooperate with the inclined surfaces of the first foam block 3 and the second foam block 4. The front end of the pusher 72 is provided with a positioning boss 721 for fitting into the cable groove 6.

[0047] In some embodiments, the pushing part 72, by setting a positioning boss 721 to cooperate with the cable groove 6, realizes the rapid positioning and axial advancement of the foam block, ensures the precise alignment of the 45° inclined surface, improves assembly efficiency, and avoids misalignment or damage caused by manual operation. In some embodiments, taking the cable conduit installation through the compartment as an example, the assembly process of the cable conduit assembly device 7 of this utility model is as follows: Process polymethacrylimide foam blocks according to the drawings, specifically including two sealing foam blocks 5, two first foam blocks 3, and multiple second foam blocks 4. All foam blocks have cable grooves 6 with a width adapted to the diameter of the cable 2 cut into their centers.

[0048] First, insert cable bundle 2 into the small end of the cable conduit, pass through the long diameter reducing cavity, and exit from the large end, ensuring that cable bundle 2 is free of knots and twists, and control the length of the cable bundle.

[0049] The first foam block 3 is passed through the cable 2 via the cable groove 6 and placed at the small port of the cable pipe body 1, with its 45° inclined surface facing inward.

[0050] Take the second foam block 4 and pass it through the cable 2. Use the wedge-shaped pushing part 72 of the cable conduit assembly device 7 to embed it into the cable groove 6. The positioning boss 721 clamps the groove wall and pushes it forward until it is aligned with the inclined surface of the first foam block 3 at the front end. At this time, the two inclined surfaces interlock to generate radial preload.

[0051] The remaining second foam blocks 4 are passed through the cable 2 in sequence. As described above, the second foam blocks 4 are aligned and overlapped with each other using the cable conduit assembly tool. Adjacent foam blocks are continuously radially tightened by 45° inclined wedge self-locking.

[0052] Another first foam block 3 is assembled into the large end of the cable conduit body 1, with its 45° inclined surface facing inward and locked with the inclined surface of the second foam block 4 at the end.

[0053] Two sealing foam blocks 5 are sealed and fixed to the two ends of the cable conduit with adhesive. HYJ-16 adhesive can be used. The adhesive should be cured for at least 72 hours.

[0054] like Figure 7 As shown, this utility model provides a cable pipe disassembly device 8, which is applied to the aforementioned cable pipe and includes a traction rod 81 and a threaded head 82.

[0055] A threaded head 82 is located at the front end of the traction rod 81 and is used to screw into the inclined surfaces of the first foam block 3 and the second foam block 4 to remove them. By screwing the threaded head 82 into the inclined surfaces of the foam blocks, the axial tension of the traction rod 81 is converted into a radial separation force to unlock the inclined surfaces, avoiding the breakage of the foam blocks caused by traditional forceful disassembly. This allows the foam blocks to be recycled and reused, further reducing costs.

[0056] In some embodiments, the disassembly process of the cable conduit using the cable conduit disassembly device 8 is as follows: First, remove the adhesive from the foam blocks 5 sealing both ends of the cable conduit, and gently pry them off the conduit openings with a tool.

[0057] Screw the threaded head 82 of the disassembly device into the 445° inclined surface of the first foam block 3 near the end, pull the traction rod 81 in the opposite direction along the axial direction of the tube body 1 to break the self-locking of the inclined surface between the first foam block 3 and the adjacent second foam block 4, and remove the first foam block 3.

[0058] Screw the threaded head 82 into the inclined surface of the exposed second foam block 4 and pull the foam block out.

[0059] Remove all the second foam blocks 4 in sequence, from the nearest to the farthest.

[0060] This disassembly process enables rapid and non-destructive disassembly in confined spaces without damaging the foam blocks, resulting in quick single-piece operation and significantly improving equipment maintainability.

[0061] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A cable conduit, characterized in that, include: The tube body has an axially variable diameter cavity with an opening diameter smaller than the inner diameter; The cable is threaded through the conduit. The self-tightening assembly consists of multiple foam blocks arranged in segments along the axial direction of the tube and radially pressed against the inner wall of the tube. The self-tightening assembly is provided with a cable groove that runs through the axial direction of the tube, and the cable passes through the cable groove and extends out from the port of the tube.

2. The cable conduit according to claim 1, characterized in that, The self-tightening assembly includes: Two first foam blocks are respectively disposed at the two ends of the tube body, and a first inclined surface is provided at the end facing the inside of the tube body; Multiple second foam blocks are arranged sequentially between two first foam blocks along the axial direction of the tube body, and each second foam block has a second inclined surface and a third inclined surface at both ends of its axial direction. The first inclined surface of the first foam block complements the second inclined surface of the adjacent second foam block, and the two adjacent second foam blocks complement each other through the third inclined surface and the second inclined surface.

3. The cable conduit according to claim 2, characterized in that, The second inclined surface and the third inclined surface of the second foam block are arranged symmetrically.

4. The cable conduit according to claim 3, characterized in that, The inclination angles of the first, second, and third inclined planes are 45°±2°.

5. The cable conduit according to claim 2, characterized in that, The self-tightening assembly also includes: Two sealing foam blocks are fixed to the two ends of the tube body and abut against the end face of the first foam block.

6. The cable conduit according to claim 5, characterized in that, The two sealing foam blocks are fixed to the two ends of the tube body with adhesive.

7. The cable conduit according to claim 1, characterized in that, The width of the cable trough is adapted to the diameter of the cable.

8. The cable conduit according to claim 1, characterized in that, The self-tightening assembly is made of polymethacrylimide foam.

9. A cable conduit assembly device, applied to the cable conduit according to any one of claims 1-8, characterized in that, include: control lever; A pusher is provided at the front end of the operating lever. The pusher is wedge-shaped to cooperate with the inclined surfaces of the first foam block and the second foam block. A positioning boss is provided at the front end of the pusher for fitting into the cable groove.

10. A cable conduit disassembly device, applied to the cable conduit according to any one of claims 1-8, characterized in that, include: Tow bar; A threaded head, located at the front end of the traction rod, is used to screw into the inclined surfaces of the first and second foam blocks to remove them.

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