A multi-layer composite corrosion-resistant coated steel cable bridge

Abstract

This invention relates to a multi-layer composite corrosion-resistant coated steel cable tray, aiming to solve the technical problems of current cable trays, such as messy cable storage, easy tangling and wear, inability to flexibly adjust the storage layout according to the number of cables, poor versatility, and inconvenient subsequent maintenance. The invention includes a cable tray body and bolts. Long plates are installed at both ends of the inner cavity of the cable tray body. Limiting components are detachably installed on the long plates, and brackets are installed at the ends of the limiting components. A bottom partition, a middle partition, and a top partition are detachably installed inside the bracket cavity. This invention features easy and quick assembly and disassembly of the cable tray support, low assembly difficulty, and reduced labor costs. The partitions can be flexibly selected and installed to accommodate different numbers of cables in a neat arrangement, effectively preventing cable tangling and wear.

Description

Technical Field

[0001] This invention relates to the field of cable trays, specifically to a multi-layer composite corrosion-resistant coated steel cable tray. Background Technology

[0002] With the continuous development of power systems, the quantity and specifications of cables are becoming increasingly diverse, placing higher demands on the neatness of cable trays, ease of installation, and versatility. However, in actual use, existing cable trays on the market generally suffer from disorganized cable storage. Most trays lack adjustable internal partitions, forcing cables of different specifications and uses to be piled together, leading to tangling and friction, causing wear on the cable sheaths. This not only affects the cable's lifespan but may also cause safety hazards such as short circuits and leakage. Furthermore, existing trays cannot flexibly adjust their layout according to the number of cables installed, resulting in poor versatility. When the number of cables changes, the entire tray must be replaced or additional auxiliary storage components must be added, increasing usage costs and operational difficulty. Moreover, the disorganized arrangement significantly reduces maintenance efficiency during subsequent cable inspections and maintenance.

[0003] Chinese patent discloses a cable tray (authorization announcement number CN220544627U). The patented technology includes a trough, a trough cover, and a U-shaped trough plate. The U-shaped trough plate is arranged and installed in the trough. The U-shaped trough plate is provided with an installation part and a mounting part. The installation part is connected to the trough. The U-shaped trough is provided in the installation part. The cable is placed in the U-shaped trough. The mounting part is provided with a fixing part. The fixing part is provided with a clamping mechanism. The clamping mechanism is provided with a vertically adjustable fixing clamp. The fixing clamp, together with the U-shaped trough, can clamp and fix the cable.

[0004] However, existing technologies have the following problems when used: Firstly, the existing cable tray supports are cumbersome to install and dismantle, require complex tools, are difficult to assemble, consume a lot of labor costs, and are inconvenient to operate during subsequent maintenance and adjustment. Secondly, existing cable trays lack flexible and adjustable storage structures, making it impossible to adjust the layout according to the number of cables. Cables are prone to becoming tangled and worn, resulting in poor versatility and inconvenience for subsequent inspection and maintenance. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art, adapt to practical needs, and provide a multi-layer composite corrosion-resistant coated steel cable tray to solve the technical problems of current cable trays, such as messy cable storage, easy tangling and wear, inability to flexibly adjust the storage layout according to the number of cables, poor versatility, and inconvenience in subsequent maintenance.

[0006] To achieve the purpose of this invention, the technical solution adopted by this invention is as follows: design a multi-layer composite corrosion-resistant coated steel cable tray, including a cable tray body and bolts, with long plates installed at both ends of the inner cavity of the cable tray body, and limit components detachably installed on the long plates, with brackets installed at the ends of the limit components; The bracket cavity is detachably equipped with a bottom partition, a middle partition, and a top partition.

[0007] In this design, long plates are installed at both ends of the inner cavity of the cable tray body. Limiting components can be detachably installed on these long plates, and the bracket is connected to the limiting components, enabling convenient assembly and disassembly of the bracket. In use, pulling the second disc moves the connecting rod and the first disc upwards, compressing the spring and causing the limiting rod to move into the second mounting bracket. The bracket is then inserted into the bracket slot, and the long plate passes through the first mounting bracket. Releasing the second disc causes the spring to return to its original position, pushing the limiting rod through the first and second limiting holes to complete the fixation. This structure requires no complex tools, significantly reducing assembly complexity and labor costs, and offers flexible assembly and disassembly for easy maintenance.

[0008] Meanwhile, the bracket's internal cavity features detachable bottom, middle, and top partitions, allowing for flexible layout adjustments based on the number of cables. Each partition is inserted into the first groove and secured with limiting plates, bolts, and nuts. Cables can pass through the through-holes formed by the semi-circular grooves of each partition, achieving categorized storage. This prevents cable tangling and wear, providing excellent protection, adapting to different cable quantities, offering strong organization, facilitating subsequent inspection and maintenance, and enhancing the versatility and practicality of the cable tray.

[0009] Preferably, the upper end of the cable tray body is provided with a support groove, and the two long plates are respectively installed at both ends of the inner wall of the support groove. The upper end of the long plates is provided with a first limiting hole.

[0010] In practical applications, a support groove is opened at the upper end of the cable tray body, and two long plates are installed at both ends of the inner wall of the groove. A first limiting hole is provided at the upper end of the long plates to provide a stable foundation for the bracket installation. The support groove positions the bracket, preventing horizontal displacement and ensuring installation accuracy and connection stability. The long plates increase the contact area with the bracket, providing a stable carrier for the limiting components. The first limiting hole accurately matches the limiting rod, ensuring reliable limiting and fixing, and preventing the bracket from shaking or shifting. This design evenly distributes weight, reduces localized stress on the cable tray body, extends service life, and improves assembly convenience and operational reliability.

[0011] Preferably, the limiting component includes a first mounting bracket, the end of the first mounting bracket being mounted on the end of the bracket, the front end of the long plate penetrating through the first mounting bracket, the upper and lower ends of the first mounting bracket respectively having second limiting holes, the upper end of the first mounting bracket having a second mounting bracket, the upper end of the second mounting bracket having a third limiting hole, the upper end of the inner cavity of the second mounting bracket having a spring, the lower end of the spring having a first disc, the lower end of the first disc having a limiting rod, the lower end of the limiting rod penetrating through the first limiting hole and the second limiting hole.

[0012] In practical applications, the first mounting bracket connects the support frame and the long plate, with the long plate passing through it. The second limiting holes at the top and bottom of the long plate correspond to the first limiting holes on the long plate, providing a through-pass for the limiting rod. The second mounting bracket provides installation space for the spring and the first disc, while the third limiting hole guides the connecting rod. The spring provides the reset force; pulling the second disc compresses the spring, and it automatically resets upon release, making operation effortless. The first disc ensures even distribution of spring force, and the limiting rod passes through both limiting holes, locking securely and preventing bracket displacement, thus ensuring operational stability.

[0013] Preferably, a connecting rod is installed on the upper end of the first disc, the upper end of the connecting rod passes through the third limiting hole, and a second disc is installed on the upper end of the connecting rod.

[0014] In practical applications, a connecting rod is installed on the upper end of the first disc, with its upper end passing through the third limiting hole and connecting to the second disc, improving operational convenience. The connecting rod connects the first and second discs, allowing operators to indirectly move the limiting rod by pulling the second disc, ensuring safe and convenient operation. The second disc increases the force application area, making pulling easier, improving assembly and disassembly efficiency, and reducing hand fatigue. The third limiting hole guides the connecting rod, ensuring its vertical movement and accurate alignment of the limiting rod with the limiting hole, improving limiting reliability. This compact and reasonable structure facilitates processing, assembly, and maintenance, further enhancing the practicality and service life of the cable tray.

[0015] Preferably, the support has a first groove at its front end, a second groove at each end of the inner wall of the first groove, and a round hole at the end of the inner wall of the second groove.

[0016] In practical applications, a first groove is provided at the front end of the bracket, and second grooves are provided at both ends of the inner wall. A circular hole is provided at the end of the second groove to provide an installation and positioning structure for each partition and limiting plate. The first groove initially limits the position of each partition, preventing horizontal displacement; the second groove cooperates with the insert blocks of each partition to achieve lateral limiting, improving the installation stability of the partition and preventing lateral displacement; the circular hole provides a through-path for bolts, facilitating the fixing of the limiting plate and limiting the longitudinal position of the partition. This structure makes the partition easy to assemble and disassemble, allows for flexible layout adjustments to accommodate different cable quantities, reduces the difficulty of bracket processing, lowers production costs, and improves usage flexibility.

[0017] Preferably, the bottom partition is inserted into the first groove, the plurality of middle partitions are inserted into the first groove, the top partition is inserted into the first groove, and the bottom partition, the middle partition and the top partition are respectively equipped with inserts at both ends. The inserts are inserted into the second groove. The bottom partition has a third semi-circular groove at its upper end, the middle partition has a second semi-circular groove at its upper and lower ends, and the top partition has a first semi-circular groove at its lower end. Rubber pads are installed in the first semi-circular groove, the second semi-circular groove and the third semi-circular groove.

[0018] In practical applications, each partition is inserted into the first groove, and the insert block is inserted into the second groove. This double-limiting mechanism ensures the partitions are securely installed, preventing displacement or tilting. The semi-circular grooves of each partition cooperate to form a circular through-hole, providing independent space for cable routing, avoiding entanglement and friction, reducing outer sheath wear, lowering safety hazards, and extending cable life. The semi-circular grooves can accommodate cables of different specifications, improving versatility. The rubber pads inside the grooves provide elastic cushioning, further buffering friction and collisions, preventing cable scratches, and also preventing slippage and displacement, improving the stability and safety of cable storage, and enhancing the performance of the cable tray.

[0019] Preferably, a limiting plate is inserted into the second groove, the end of the bolt passes through the limiting plate and the round hole, the end of the bolt passes through the nut, and the bolt and the nut are threaded together, and the lower end of the limiting plate is attached to the upper end of the top partition.

[0020] In practical applications, the use of limiting plates, bolts, and nuts enhances the positioning and fixing effect of each partition. The limiting plate inserts into the second groove, blocking and limiting each partition to prevent upward displacement. Bolts pass through the limiting plate and the round hole, connecting with the nuts via threads, ensuring a secure fixation and easy disassembly and assembly, facilitating adjustments to the partition layout. The lower end of the limiting plate adheres to the top partition, pressing each partition tightly to prevent gaps that could cause cables to detach, ensuring neat and organized storage. Simultaneously, it evenly distributes cable pressure, preventing partition damage, extending service life, improving the stability of the support structure, and ensuring safe cable installation.

[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. When the cable tray needs to be used for cable installation, the operator can directly pull the second disc upwards. The second disc drives the connecting rod upwards, and the connecting rod passes through the third limiting hole of the second mounting bracket. This pulls the first disc to compress the spring, causing the spring to elastically compress and deform. The limiting rod connected to the first disc moves upwards, detaches from the first mounting bracket, and enters the second mounting bracket, releasing the restriction on the first mounting bracket and the long plate. Then, the bracket is inserted into the bracket slot of the cable tray body, ensuring that the front end of the long plate passes through the first mounting bracket at the end of the bracket. After the bracket is installed in place, the second disc is released, the spring elastically resets, and pushes the first disc and the limiting rod downwards, so that the bottom end of the limiting rod passes through the second limiting hole of the first mounting bracket and the first limiting hole of the long plate, firmly fixing the bracket to the cable tray body. The entire operation requires no complicated tools, the steps are simple, and the operator can easily master it, greatly reducing assembly complexity and labor costs. When inspecting, replacing, or adjusting the bracket later, the reverse operation can be used for quick disassembly, improving the flexibility of use and the convenience of maintenance.

[0022] 2. The operator first inserts the bottom partition into the first groove of the bracket, so that the inserts at both ends of the bottom partition are embedded in the second groove on the inner wall of the first groove, thus completing the bottom support and fixation. Then, according to the number of cables, select an appropriate number of middle partitions and insert them one by one into the first groove, ensuring that the inserts are embedded in the second groove. The middle partitions are used to divide the space into suitable independent storage spaces. Then, insert the top partition into the uppermost part of the first groove, so that the inserts are embedded in the second groove, thus completing the partition assembly. Next, insert the limiting plate into the second groove and cover the upper part of the top partition. Use bolts to penetrate the circular grooves of the limiting plate and the second groove. After drilling the holes, tighten the nuts to secure the limiting plates and prevent the partitions from shifting. Finally, pass the cables through the corresponding through holes: the upper cable passes through the circular hole formed by the first semicircular groove of the top partition and the second semicircular groove of the middle partition; the middle cable passes through the circular hole formed by the second semicircular groove of the adjacent middle partition; and the lower cable passes through the circular hole formed by the second semicircular groove of the middle partition and the third semicircular groove of the bottom partition. This achieves classified cable laying, which makes the cables neatly stored, avoids tangling and wear, provides good protection, can flexibly adapt to the installation needs of different numbers of cables, has strong versatility, and facilitates subsequent cable inspection and maintenance. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a three-dimensional schematic diagram of the cable tray body of the present invention; Figure 4 This is a three-dimensional schematic diagram of the bracket of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point A; Figure 6This is a three-dimensional schematic diagram showing the separation of the bottom partition, middle partition, and top partition of the present invention.

[0024] In the diagram: 1. Cable tray body; 2. Long plate; 3. Frame groove; 4. Support; 5. Top partition; 6. Middle partition; 7. Bottom partition; 8. First limiting hole; 9. First groove; 10. Second groove; 11. Round hole; 12. First mounting bracket; 13. Second limiting hole; 14. First disc; 15. Spring; 16. Connecting rod; 17. Second disc; 18. Third limiting hole; 19. Second mounting bracket; 20. Bolt; 21. Limiting plate; 22. First semi-circular groove; 23. Second semi-circular groove; 24. Nut; 25. Insert block; 26. Rubber pad; 27. Third semi-circular groove; 28. Limiting rod. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and embodiments: Example 1: A multi-layer composite corrosion-resistant coated steel cable tray, see [link / reference] Figures 1 to 6 The cable tray includes a cable tray body 1 and bolts 20. Long plates 2 are installed at both ends of the inner cavity of the cable tray body 1. Limiting components are detachably installed on the long plates 2, and brackets 4 are installed at the ends of the limiting components. A frame groove 3 is formed at the upper end of the cable tray body 1, and two long plates 2 are respectively installed at both ends of the inner wall of the frame groove 3. A first limiting hole 8 is formed at the upper end of the long plates 2. The limiting component includes a first mounting bracket 12, the end of which is installed at the end of the bracket 4. The front end of the long plate 2 passes through the first mounting bracket 12, and second limiting holes 8 are formed at the upper and lower ends of the first mounting bracket 12. The first mounting bracket 12 has a limiting hole 13. A second mounting bracket 19 is mounted on the upper end of the first mounting bracket 12. A third limiting hole 18 is opened on the upper end of the second mounting bracket 19. A spring 15 is mounted on the upper end of the inner cavity of the second mounting bracket 19. A first disc 14 is mounted on the lower end of the spring 15. A limiting rod 28 is mounted on the lower end of the first disc 14. The lower end of the limiting rod 28 passes through the first limiting hole 8 and the second limiting hole 13. A connecting rod 16 is mounted on the upper end of the first disc 14. The upper end of the connecting rod 16 passes through the third limiting hole 18. A second disc 17 is mounted on the upper end of the connecting rod 16. When using this multi-layer composite corrosion-resistant coated steel cable tray to install and lay cables, the operator can directly pull the second disc 17 upwards by hand. Under the action of the pulling force, the second disc 17 will drive the connecting rod 16 fixedly connected to it to move upwards synchronously. The connecting rod 16 passes through the third limiting hole 18 on the second mounting frame 19, and then pulls the first disc 14 connected at the lower end to move upwards. At this time, the first disc 14 will exert an upward squeezing force on the spring 15 installed at the upper end of the inner cavity of the second mounting frame 19, causing the spring 15 to undergo elastic compression deformation. As the spring 15 continues to compress, the limiting rod 28 fixedly connected to the lower end of the first disc 14 will also move upwards, gradually detaching from the inner cavity of the first mounting frame 12, and finally moving completely into the inner cavity of the second mounting frame 19, thereby releasing the limiting rod 28 from the limiting constraint of the first mounting frame 12 and the long plate 2.

[0026] Subsequently, the operator can smoothly and accurately insert the bracket 4 into the slot 3 opened at the upper end of the cable tray body 1. During the insertion process, it is necessary to ensure that the front ends of the long plates 2 installed at both ends of the inner cavity of the cable tray body 1 can smoothly pass through the first mounting bracket 12 connected to the end of the bracket 4. After the bracket 4 is fully inserted into the slot 3 and the installation position is accurate, the operator releases the second disc 17 in his hand. At this time, the spring 15, which is in a compressed state, will push the first disc 14 downward under the action of its own elastic restoring force. The first disc 14 drives the limiting rod 28 to move downward in sync, so that the bottom end of the limiting rod 28 passes through the second limiting holes 13 opened at the upper and lower ends of the first mounting bracket 12 and the first limiting hole 8 opened at the upper end of the long plate 2 in sequence, so as to achieve the stable positioning of the first mounting bracket 12 and the long plate 2, thereby firmly fixing the bracket 4 on the cable tray body 1.

[0027] The entire operation process requires no complicated auxiliary tools, and the operation steps are simple and easy to understand. Operators can quickly master it after a short familiarization period. This not only greatly reduces the complexity of cable tray assembly and the labor intensity of operators, but also effectively shortens the assembly period and significantly reduces labor costs. In addition, when it is necessary to inspect, replace or adjust the position of bracket 4 in the future, the above reverse operation can be repeated to quickly complete the disassembly of bracket 4. The operation is convenient and efficient, improving the flexibility of cable tray use and the convenience of maintenance.

[0028] For details, see Figures 1 to 6The bracket 4 has a detachable bottom partition 7, a detachable middle partition 6, and a detachable top partition 5 installed inside its inner cavity. A first groove 9 is formed at the front end of the bracket 4, and second grooves 10 are formed at both ends of the inner wall of the first groove 9. A round hole 11 is formed at the end of the inner wall of the second groove 10. The bottom partition 7 is inserted into the first groove 9, multiple middle partitions 6 are inserted into the first groove 9, and the top partition 5 is inserted into the first groove 9. Insert blocks 25 are installed at both ends of the bottom partition 7, middle partitions 6, and top partition 5. 5 is inserted into the second groove 10. The bottom partition 7 has a third semi-circular groove 27 at its upper end. The middle partition 6 has a second semi-circular groove 23 at its upper and lower ends respectively. The top partition 5 has a first semi-circular groove 22 at its lower end. Rubber pads 26 are installed in the first semi-circular groove 22, the second semi-circular groove 23 and the third semi-circular groove 27. A limiting plate 21 is inserted into the second groove 10. The end of the bolt 20 passes through the limiting plate 21 and the round hole 11. The end of the bolt 20 passes through the nut 24 and the bolt 20 and the nut 24 are threaded together. The lower end of the limiting plate 21 is attached to the upper end of the top partition 5. The operator first aligns the bottom partition 7 with the first groove 9 at the front end of the bracket 4, and smoothly inserts the bottom partition 7 into the first groove 9, so that the inserts 25 at both ends of the bottom partition 7 are accurately embedded into the second grooves 10 at both ends of the inner wall of the first groove 9, thus completing the initial fixation of the bottom partition 7, which serves as the bottom support structure for cable storage.

[0029] Subsequently, based on the specific number of cables to be installed, select an appropriate number of middle partitions 6 and insert them one by one into the first groove 9 in the same manner, ensuring that the inserts 25 at both ends of each middle partition 6 are accurately embedded in the second groove 10, and use the middle partitions 6 to divide the inner cavity of the bracket 4 into independent storage spaces that match the number of cables.

[0030] Next, the top partition 5 is inserted into the uppermost end of the first groove 9, so that the inserts 25 at both ends of the top partition 5 are embedded into the second groove 10, completing the assembly of the entire partition structure. Immediately afterwards, the limiting plate 21 is aligned with the second groove 10 and inserted, so that the limiting plate 21 covers the upper end of the top partition 5. Then, the end of the bolt 20 is inserted through the round hole 11 opened at the end of the inner wall of the limiting plate 21 and the second groove 10 in sequence. The nut 24 is screwed onto the end of the bolt 20. Through the threaded connection between the bolt 20 and the nut 24, the limiting plate 21 is firmly fixed in the second groove 10, which longitudinally limits the bottom partition 7, the middle partition 6 and the top partition 5, preventing the partitions from shifting during use.

[0031] Finally, the cables to be installed are passed through the corresponding through holes. The uppermost cable passes through the complete hole formed by the first semicircular groove 22 at the lower end of the top partition 5 and the second semicircular groove 23 at the upper end of the adjacent middle partition 6. The middle cable passes through the complete hole formed by the corresponding second semicircular grooves 23 between two adjacent middle partitions 6. The lowermost cable passes through the complete hole formed by the second semicircular groove 23 at the lower end of the middle partition 6 and the third semicircular groove 27 at the upper end of the bottom partition 7, thus achieving classified laying of different cables. In this way, not only is the cable storage neat and tidy, avoiding the wear of the outer sheath caused by the cables tangling and friction, thus providing good protection for the cables, but the number of middle partitions 6 can also be flexibly adjusted according to the actual number of cables to adapt to different installation needs, making it highly versatile. It also facilitates subsequent inspection, maintenance and replacement of cables, further improving the practicality of the cable tray.

[0032] In addition, all components designed in this invention are general standard parts or components known to those skilled in the art. Their structures and principles can be learned by those skilled in the art through technical manuals or conventional experimental methods. They can be fully implemented by those skilled in the art, so there is no need to elaborate. The content protected by this invention does not involve improvements to the internal structure and methods.

[0033] The embodiments disclosed in this invention are preferred embodiments, but are not limited thereto. Those skilled in the art can easily understand the spirit of this invention based on the above embodiments and make different extensions and variations, but as long as they do not depart from the spirit of this invention, they are all within the protection scope of this invention.

Claims

1. A multi-layer composite corrosion-resistant coated steel cable tray, comprising a tray body (1) and bolts (20), characterized in that, The inner cavity of the cable tray body (1) is equipped with long plates (2) at both ends. Limiting components are detachably installed on the long plates (2), and brackets (4) are installed at the ends of the limiting components. The bracket (4) has a bottom partition (7) that can be detachably installed inside, a middle partition (6) that can be detachably installed inside, and a top partition (5) that can be detachably installed inside.

2. The multi-layer composite corrosion-resistant coated steel cable tray as described in claim 1, characterized in that, The upper end of the cable tray body (1) is provided with a frame groove (3), and the two long plates (2) are respectively installed at both ends of the inner wall of the frame groove (3). The upper end of the long plate (2) is provided with a first limiting hole (8).

3. The multi-layer composite corrosion-resistant coated steel cable tray as described in claim 2, characterized in that, The limiting component includes a first mounting bracket (12), the end of which is mounted on the end of the bracket (4). The front end of the long plate (2) passes through the first mounting bracket (12). The upper and lower ends of the first mounting bracket (12) are respectively provided with second limiting holes (13). The upper end of the first mounting bracket (12) is provided with a second mounting bracket (19). The upper end of the second mounting bracket (19) is provided with a third limiting hole (18). The upper end of the inner cavity of the second mounting bracket (19) is provided with a spring (15). The lower end of the spring (15) is provided with a first disc (14). The lower end of the first disc (14) is provided with a limiting rod (28). The lower end of the limiting rod (28) passes through the first limiting hole (8) and the second limiting hole (13).

4. The multi-layer composite corrosion-resistant coated steel cable tray as described in claim 3, characterized in that, A connecting rod (16) is installed on the upper end of the first disc (14), the upper end of the connecting rod (16) passes through the third limiting hole (18), and a second disc (17) is installed on the upper end of the connecting rod (16).

5. A multi-layer composite corrosion-resistant coated steel cable tray as described in claim 1, characterized in that, The bracket (4) has a first groove (9) at its front end, and a second groove (10) is provided at both ends of the inner wall of the first groove (9). A round hole (11) is provided at the end of the inner wall of the second groove (10).

6. A multi-layer composite corrosion-resistant coated steel cable tray as described in claim 5, characterized in that, The bottom partition (7) is inserted into the first groove (9), the middle partitions (6) are inserted into the first groove (9), the top partition (5) is inserted into the first groove (9), the bottom partition (7), the middle partitions (6) and the top partition (5) are respectively equipped with inserts (25), the inserts (25) are inserted into the second groove (10), the bottom partition (7) has a third semi-circular groove (27) at the upper end, the middle partitions (6) have second semi-circular grooves (23) at the upper and lower ends, the top partition (5) has a first semi-circular groove (22) at the lower end, and rubber pads (26) are installed in the first semi-circular groove (22), the second semi-circular groove (23) and the third semi-circular groove (27).

7. A multi-layer composite corrosion-resistant coated steel cable tray as described in claim 6, characterized in that, A limiting plate (21) is inserted into the second groove (10). The end of the bolt (20) passes through the limiting plate (21) and the round hole (11). The end of the bolt (20) passes through the nut (24). The bolt (20) and the nut (24) are threaded together. The lower end of the limiting plate (21) is attached to the upper end of the top partition (5).

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