Bridge for electric power engineering cable construction

By designing auxiliary connection mechanisms and internal reinforcement mechanisms for cable trays, and combining the use of sliders and slide bars, the installation process of cable trays is simplified, solving the problems of complex installation and inconvenient maintenance in existing technologies, and improving the installation efficiency and stability of cable trays in power engineering.

CN121863263APending Publication Date: 2026-04-14刘新官
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2023-05-10
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing cable trays are inconvenient to maintain and replace when cable lines are replaced. They are difficult to connect and complex to install, requiring a high level of expertise, which affects the efficiency of power engineering installation.

Method used

A cable tray was designed, comprising an auxiliary connection mechanism, an internal reinforcement mechanism, and a cable tray fixing mechanism. The installation process is simplified by using a combination of sliders, slide bars, and fixing bolts. A water filter groove and fire-retardant coating are provided inside the cable tray body to improve stability and protection.

Benefits of technology

It enables rapid installation of cable trays, reduces the technical requirements for installers, improves the installation efficiency of power engineering, enhances the strength and protective performance of cable trays, and avoids line damage.

✦ Generated by Eureka AI based on patent content.

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Abstract

The invention discloses a bridge for electric power engineering cable construction, which comprises a cable bridge, a bridge top cover and a bridge fixing mechanism, the bridge top cover is arranged at the top of the cable bridge, the bridge fixing mechanism is arranged at the bottom of the cable bridge, and an auxiliary connecting mechanism and an internal reinforcing mechanism are arranged in the cable bridge. The internal reinforcing mechanism is arranged in the middle of the interior of the cable bridge, the auxiliary connecting mechanisms are arranged at the two ends of the internal reinforcing mechanism, and the cable bridge comprises a bridge body, mounting holes, clamping grooves and water filtering grooves. The cable bridge has the advantages that the practicability is high, the sliding rods move, the sliding plates move from the first sliding rails to the second sliding rails, the bottoms of the mounting bolts are in threaded connection with the mounting grooves, and therefore the two bridge bodies are connected, the work that the cable bridge bodies are fixed through mounting pieces and bolts in the prior art is simplified, the mounting speed is increased, and the mounting efficiency is improved. And the working efficiency of electric power engineering installation is improved.
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Description

Technical Field

[0001] This invention relates to the field of power engineering technology, specifically to a cable tray for power engineering cable construction. Background Technology

[0002] Cable trays are classified into trough type, tray type, ladder type, and mesh type structures, and consist of supports, brackets, and installation accessories. Cable trays inside buildings can be installed independently or laid on various building and pipe rack supports. They should be characterized by simple structure, beautiful appearance, flexible configuration, and convenient maintenance. All parts must be galvanized. Cable trays installed outdoors are classified into trough type, tray type, ladder type, and mesh type structures, and consist of supports, brackets, and installation accessories.

[0003] According to publication number CN215645951U, an integrated cable tray for high-voltage cable construction is disclosed. The cable tray includes a fixed frame and a top cover on top of the fixed frame. A traction mechanism is installed inside the fixed frame. The traction mechanism includes several strip-shaped through holes, fixed plates, and vertical plates. The strip-shaped through holes are formed on the bottom wall of the fixed frame, and slide rails are fixedly connected to both sides of the inner wall. A common sliding plate is slidably connected to the outer wall of each slide rail. Movable plates are fixedly connected to the top of the slide rails. Fixed plates are fixedly connected to the bottom wall of the fixed frame. Pullers are fixedly connected to one side of each of the movable plates and the fixed plates. This integrated cable tray for high-voltage cable construction facilitates cable pulling, saving time and effort, and avoiding the problem of cable damage due to friction between the cable's outer wall and the fixed frame when pulling cables using traditional devices.

[0004] However, the above-mentioned device still has shortcomings. By moving the pulleys on the moving plate, the distance between the moving plate and the fixed plate is changed, which makes it easier to put the cable between the pulleys. After placement, the pulleys between the moving plate and the fixed plate are fixed by the spring force. The pulleys facilitate the pulling of the cable. However, when the internal wiring of the cable tray needs to be replaced, it is not convenient to maintain and replace it. The entire integrated cable tray needs to be disassembled before it can be handled, which is very inconvenient. At the same time, the connection between integrated cable trays is relatively difficult, and the installation skills of the personnel are highly required.

[0005] Therefore, it is essential to design a cable tray for power engineering with strong practicality and the ability to move the sliding rod, moving the slide plate from the first slide rail to the second slide rail, so that the bottom of the mounting bolt is threaded into the mounting groove, thereby connecting the two cable tray bodies. This simplifies the original work of fixing cable trays with mounting plates and bolts, speeds up the installation, and improves the work efficiency of power engineering installation. Summary of the Invention

[0006] The purpose of this invention is to provide a cable tray for power engineering cable construction to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a cable tray for power engineering cable construction, comprising a cable tray, a cable tray top cover and a cable tray fixing mechanism, wherein the cable tray top cover is disposed on the top of the cable tray and the cable tray fixing mechanism is disposed on the bottom of the cable tray.

[0008] The cable tray is equipped with an auxiliary connection mechanism and an internal reinforcement mechanism. The internal reinforcement mechanism is located in the middle of the cable tray, and the auxiliary connection mechanism is located at both ends of the internal reinforcement mechanism.

[0009] According to the above technical solution, the cable tray includes a tray body, mounting holes, snap-fit ​​grooves, and a water filter. The mounting holes are located on one side of the tray body, the snap-fit ​​grooves are located on the upper and lower sides of the mounting holes, and the water filter is located on both sides of the bottom of the tray body. By providing mounting holes and snap-fit ​​grooves on the tray body, the tray body can be connected to elbows or tees, facilitating compatibility with existing cable tray accessories. This high compatibility promotes the widespread installation of the tray body and enhances its practicality. The water filter at the bottom of the tray body drains water that may accidentally enter the tray body, preventing rainwater from accumulating inside and damaging the wiring. The water filter also allows for air circulation, preventing overheating of the wiring inside the tray body. Furthermore, the downward-facing opening of the water filter prevents dust from entering the tray body.

[0010] According to the above technical solution, the cable tray top cover includes a fixing block, a rotating tube, a cover plate, and a magnetic block. A groove is provided on the top of one side of the cable tray. The fixing block is fixedly connected to the inside of the groove. The rotating tube is rotatably connected to the inside of the fixing block. The cover plate is fixedly connected to the outside of the rotating tube. The magnetic block is fixedly connected to one end of the cover plate. By installing the fixing block on the cable tray and then using the rotating tube to rotate the cover plate, the top of the cable tray is closed. After the cover plate is closed, it is reinforced with the magnetic block, thereby ensuring that the cover plate is fixed and stable, and can block dust, rainwater, etc., to prevent them from entering the inside of the cable tray and damaging the wires inside.

[0011] According to the above technical solution, the cable tray fixing mechanism includes an installation pipe, a sliding groove, a slider, a fixing bolt, a connecting block, a fixing plate, and a fixing slot. The installation pipe is fixedly connected to the bottom of the cable tray body. The sliding groove is opened on one side of the installation pipe. The slider is slidably connected to the inside of the installation pipe. The fixing bolt passes through the sliding groove and is rotatably connected to the slider. The connecting block is fixedly connected to the bottom of the slider. The fixing plate is fixedly connected to the bottom of the connecting block. The fixing slot is opened on both sides of the fixing plate. By using the fixing bolt to adjust the position of the slider, the position of the fixing plate can be freely moved along the installation pipe. Cable trays are often fixed in the air using suspension rods. Therefore, the position of the suspension rods greatly restricts the installation of cable trays. Conventionally, suspension frames are used to connect the suspension rods to the cable trays for installation. This involves many accessories and requires a high level of skill from the installers. Using a fixing plate connected by a slider allows the suspension rods to be directly installed to the cable trays, saving installation steps, making installation convenient, easy to learn, and requiring less skill from the installers.

[0012] According to the above technical solution, the auxiliary connection mechanism includes a first slide rail, a slide rod, a slide plate, a mounting bolt, a second slide rail, a connecting plate, and a mounting groove. The first slide rail is fixedly connected to one end of the cable tray body, and the second slide rail is fixedly connected to the other end of the cable tray body. The slide rod is slidably connected to the inside of the first slide rail, the slide plate is fixedly connected to the top of the slide rod, the mounting bolt is rotatably connected to the top of the slide plate, the connecting plate is fixedly connected to the inside of the second slide rail, and the mounting groove is opened inside the connecting plate. By moving the slide rod, the slide plate is moved from the first slide rail to the second slide rail. Then, the mounting bolt is rotated so that the bottom of the mounting bolt is threadedly connected to the mounting groove, thereby connecting the two cable tray bodies. This simplifies the original work of using mounting plates and bolts to fix the cable trays, speeds up the installation, and improves the work efficiency of power engineering installation.

[0013] According to the above technical solution, the internal reinforcement mechanism includes a frame, a reinforcement plate, and square ribs. The frame is fixedly connected to the bottom of the inner wall of the cable tray body, the reinforcement plate is fixedly connected to the inside of the frame, and the square ribs are fixedly connected to the top of the reinforcement plate. By evenly distributing the square ribs on the top of the reinforcement plate, the strength of the reinforcement plate is increased, resulting in good strength of the cable tray body and preventing it from being easily bent or damaged during transportation.

[0014] According to the above technical solution, the first slide rail and the second slide rail are the same size, which makes it easy for the slide rod to move inside the first slide rail and the second slide rail, and makes it easy for the slide plate and the connecting block to be connected.

[0015] According to the above technical solution, there are two fixing slots, which are set on both sides of the fixing plate. The two fixing slots are used to increase the stability of the connection between the cable tray and external accessories such as the hanger rod.

[0016] According to the above technical solution, the cable tray body is coated with fire-retardant paint both inside and outside to increase the fire resistance of the cable tray and meet fire protection standards.

[0017] According to the above technical solution, the width of the cover plate is consistent with the length and width of the cable tray body, so that when multiple sections of the cable tray body are connected, the cover plate will not obstruct the connection and can provide dust and rain protection for each section of the cable tray body.

[0018] Compared with the prior art, the beneficial effects achieved by the present invention are: 1. This invention uses a fixing bolt to adjust the position of the slider, thereby allowing the fixing plate to move freely along the mounting tube. Conventionally, a hanging frame is used to connect the hanging rods to the cable tray for installation, which involves many parts and requires a high level of skill from the installer. The fixing plate connected by the slider can directly install the hanging rods to the cable tray, saving installation steps, making installation convenient, easy to learn, and requiring less skill from the installer.

[0019] 2. In this invention, the sliding rod moves the sliding plate from the first slide rail to the second slide rail, so that the bottom of the mounting bolt is threaded into the mounting groove, thereby connecting the two cable tray bodies. This simplifies the original work of fixing the cable trays with mounting plates and bolts, speeds up the installation, and improves the work efficiency of power engineering installation.

[0020] 3. This invention increases the strength of the reinforcing plate by incorporating square ribs, resulting in a strong cable tray body that is less prone to bending or damage during transportation, thus ensuring transportation safety.

[0021] 4. In this invention, the top of the cable tray is closed by using a rotating tube to rotate the cover plate. After the cover plate is closed, it is reinforced with a magnetic block, thereby ensuring that the cover plate is fixed and stable. It can block dust, rainwater, etc., and prevent damage to the wires inside the cable tray. The cover plate and the cable tray body are integrated, reducing unnecessary accessories. Attached Figure Description

[0022] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0023] In the attached diagram: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the cable tray of the present invention; Figure 3 This is a schematic diagram of the cable tray top cover structure of the present invention; Figure 4This is a schematic diagram of the cable tray fixing mechanism of the present invention; Figure 5 This is a schematic diagram of the auxiliary connection mechanism of the present invention; Figure 6 This is a schematic diagram of the internal reinforcement mechanism of the present invention.

[0024] In the diagram: 1. Cable tray; 2. Cable tray top cover; 3. Cable tray fixing mechanism; 4. Auxiliary connection mechanism; 5. Internal reinforcement mechanism; 101. Cable tray body; 102. Mounting hole; 103. Snap-fit ​​groove; 104. Filter tank; 201. Fixing block; 202. Rotary pipe; 203. Cover plate; 204. Magnetic block; 301. Mounting pipe; 302. Slide groove; 303. Slider; 304. Fixing bolt; 305. Connecting block; 306. Fixing plate; 307. Fixing groove; 401. First slide rail; 402. Slide rod; 403. Slide plate; 404. Mounting bolt; 405. Second slide rail; 406. Connecting plate; 407. Mounting groove; 501. Frame; 502. Reinforcing plate; 503. Square rib block. Detailed Implementation

[0025] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0026] Please see Figure 1-6 The present invention provides a technical solution: a cable tray for power engineering cable construction, comprising a cable tray 1, a cable tray top cover 2, and a cable tray fixing mechanism 3, wherein the cable tray top cover 2 is disposed on the top of the cable tray 1, and the cable tray fixing mechanism 3 is disposed on the bottom of the cable tray 1.

[0027] The cable tray 1 is equipped with an auxiliary connection mechanism 4 and an internal reinforcement mechanism 5. The internal reinforcement mechanism 5 is located in the middle of the cable tray 1, and the auxiliary connection mechanism 4 is located at both ends of the internal reinforcement mechanism 5.

[0028] The cable tray 1 includes a tray body 101, mounting holes 102, snap-fit ​​grooves 103, and a water filter 104. The mounting holes 102 are located on one side of the tray body 101, the snap-fit ​​grooves 103 are located on the upper and lower sides of the mounting holes 102, and the water filter 104 is located on both sides of the bottom of the tray body 101. By providing mounting holes 102 and snap-fit ​​grooves 103 on the tray body 101, it is possible to connect the tray body 101 to elbows or tee joints, thereby facilitating compatibility between the tray body 101 and existing cable tray accessories, resulting in high adaptability and benefiting the development of the cable tray system. The cable tray 101 is widely used and highly practical. The water filter 104 at the bottom of the cable tray 101 is used to drain water that accidentally enters the cable tray 101, preventing rainwater from accumulating inside the cable tray 101 and causing damage to the lines. At the same time, the water filter 104 also serves to circulate air, preventing the lines inside the cable tray 101 from overheating. The opening of the water filter 104 faces downwards, making it difficult for dust to enter the inside of the cable tray 101. Both the inside and outside of the cable tray 101 are coated with fire-retardant paint to increase the fire resistance of the cable tray 1 and meet fire protection standards.

[0029] The cable tray top cover 2 includes a fixing block 201, a rotating pipe 202, a cover plate 203, and a magnetic block 204. A groove is formed on the top of one side of the cable tray 1. The fixing block 201 is fixedly connected to the inside of the groove, the rotating pipe 202 is rotatably connected to the inside of the fixing block 201, the cover plate 203 is fixedly connected to the outside of the rotating pipe 202, and the magnetic block 204 is fixedly connected to one end of the cover plate 203. By installing the fixing block 201 onto the cable tray 1, and then rotating the cover plate 203 using the rotating pipe 202... 03. Close the top of the cable tray 1. After closing, the cover plate 203 is reinforced with magnetic blocks 204 to ensure that the cover plate 203 is fixed and secure. It can block dust, rain and other water, and prevent them from entering the inside of the cable tray 1 and damaging the wires inside. The width of the cover plate 203 is the same as the length and width of the cable tray body 101, so that when multiple sections of the cable tray body 101 are connected, the cover plate 203 will not obstruct the connection and can protect each section of the cable tray body 101 from dust and rain.

[0030] The cable tray fixing mechanism 3 includes an installation tube 301, a slide groove 302, a slider 303, a fixing bolt 304, a connecting block 305, a fixing plate 306, and a fixing groove 307. The installation tube 301 is fixedly connected to the bottom of the cable tray body 101. The slide groove 302 is formed on one side of the installation tube 301. The slider 303 is slidably connected to the inside of the installation tube 301. The fixing bolt 304 passes through the slide groove 302 and is rotatably connected to the slider 303. The connecting block 305 is fixedly connected to the bottom of the slider 303. The fixing plate 306 is fixedly connected to the bottom of the connecting block 305. The fixing groove 307 is formed on both sides of the fixing plate 306. By using the fixing bolt 304, the position of the slider 303 is adjusted, thereby allowing it to move along the cable tray body 101. The mounting tube 301 can freely move the position of the fixing plate 306. Cable trays 1 are often installed using suspension rods for aerial fixation. Therefore, the position of the suspension rods greatly restricts the installation of cable trays 1. Conventionally, a hanging frame is used to connect the suspension rods to install the cable trays 1. This involves many accessories and requires a high level of skill from the installer. The fixing plate 306 connected by the slider 303 can directly install the suspension rods to the cable trays 1, saving installation steps, making installation convenient and easy to learn. It also reduces the skill requirements for the installer. There are two fixing slots 307, which are set on both sides of the fixing plate 306. The two fixing slots 307 are used to increase the stability of the connection between the cable trays 1 and external accessories such as suspension rods.

[0031] The auxiliary connection mechanism 4 includes a first slide rail 401, a slide rod 402, a slide plate 403, a mounting bolt 404, a second slide rail 405, a connecting plate 406, and a mounting groove 407. The first slide rail 401 is fixedly connected to one end of the cable tray body 101, and the second slide rail 405 is fixedly connected to the other end of the cable tray body 101. The slide rod 402 is slidably connected to the inside of the first slide rail 401, the slide plate 403 is fixedly connected to the top of the slide rod 402, the mounting bolt 404 is rotatably connected to the top of the slide plate 403, the connecting plate 406 is fixedly connected to the inner side of the second slide rail 405, and the mounting groove 407 is formed inside the connecting plate 406. The movement of 402, with the first slide rail 401 and the second slide rail 405 having the same dimensions, facilitates the movement of the slide rod 402 within the first slide rail 401 and the second slide rail 405, allowing the slide plate 403 and the connecting block 305 to connect. The slide plate 403 is moved from the first slide rail 401 to the second slide rail 405, and then the mounting bolt 404 is rotated so that the bottom of the mounting bolt 404 is threadedly connected to the mounting groove 407, thereby connecting the two cable tray bodies 101. This simplifies the original work of using mounting plates and bolts to fix the cable trays 1, speeds up the installation, and improves the work efficiency of power engineering installation.

[0032] The internal reinforcement mechanism 5 includes a frame 501, a reinforcement plate 502, and a square rib block 503. The frame 501 is fixedly connected to the bottom of the inner wall of the cable tray body 101, the reinforcement plate 502 is fixedly connected to the inside of the frame 501, and the square rib block 503 is fixedly connected to the top of the reinforcement plate 502. By evenly distributing the square rib blocks 503 on the top of the reinforcement plate 502, the strength of the reinforcement plate 502 is increased, resulting in good strength of the cable tray body 101, which will not be easily bent or damaged during transportation.

[0033] When in use, place the two sets of cable tray bodies 101 together, then move the slide bar 402 to move the slide plate 403 from the first slide rail 401 to the second slide rail 405. Then rotate the mounting bolt 404 so that the bottom of the mounting bolt 404 is threaded into the mounting groove 407, thereby connecting the two cable tray bodies 101. Then lift the two sets of cable tray bodies 101 and fix them to the wall ceiling hangers with screws and fixing grooves 307. Use the fixing bolt 304 to adjust the position of the slider 303, so that the position of the fixing plate 306 can be moved freely along the mounting tube 301 to ensure that the cable tray body 101 is installed stably. The cable tray body 101 has mounting holes 102 and snap-fit ​​grooves 103 for connecting the cable tray body 101 to elbows or tees. After the wires are laid, cover the cover plate 203 along the rotating tube 202 and fix it with the magnetic block 204 to protect it from dust and rain. Then the installation is complete.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0035] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A cable tray for power engineering cable construction, comprising a cable tray (1), a cable tray top cover (2), and a cable tray fixing mechanism (3), characterized in that: The cable tray top cover (2) is located on the top of the cable tray (1), and the cable tray fixing mechanism (3) is located on the bottom of the cable tray (1); The cable tray (1) is provided with an auxiliary connection mechanism (4) and an internal reinforcement mechanism (5). The internal reinforcement mechanism (5) is located in the middle of the cable tray (1), and the auxiliary connection mechanism (4) is located at both ends of the internal reinforcement mechanism (5).

2. The cable tray for power engineering cable construction according to claim 1, characterized in that: The cable tray (1) includes a tray body (101), mounting holes (102), snap-fit ​​grooves (103), and a water filter (104). The mounting holes (102) are located on one side of the tray body (101), the snap-fit ​​grooves (103) are located on the upper and lower sides of the mounting holes (102), and the water filter (104) is located on the bottom sides of the tray body (101).

3. The cable tray for power engineering cable construction according to claim 1, characterized in that: The cable tray top cover (2) includes a fixing block (201), a rotating pipe (202), a cover plate (203), and a magnetic block (204). A groove is provided on the top of one side of the cable tray (1). The fixing block (201) is fixedly connected to the inside of the groove. The rotating pipe (202) is rotatably connected to the inside of the fixing block (201). The cover plate (203) is fixedly connected to the outside of the rotating pipe (202). The magnetic block (204) is fixedly connected to one end of the cover plate (203).

4. The cable tray for power engineering cable construction according to claim 1, characterized in that: The cable tray fixing mechanism (3) includes an installation tube (301), a sliding groove (302), a slider (303), a fixing bolt (304), a connecting block (305), a fixing plate (306), and a fixing groove (307). The installation tube (301) is fixedly connected to the bottom of the cable tray body (101). The sliding groove (302) is opened on one side of the installation tube (301). The slider (303) is slidably connected to the inside of the installation tube (301). The fixing bolt (304) passes through the sliding groove (302) and is rotatably connected to the slider (303). The connecting block (305) is fixedly connected to the bottom of the slider (303). The fixing plate (306) is fixedly connected to the bottom of the connecting block (305). The fixing groove (307) is opened on both sides of the fixing plate (306).

5. A cable tray for power engineering cable construction according to claim 1, characterized in that: The auxiliary connection mechanism (4) includes a first slide rail (401), a slide rod (402), a slide plate (403), a mounting bolt (404), a second slide rail (405), a connecting plate (406), and a mounting groove (407). The first slide rail (401) is fixedly connected to one end of the cable tray body (101), and the second slide rail (405) is fixedly connected to the other end of the cable tray body (101). The slide rod (402) is slidably connected to the inside of the first slide rail (401). The slide plate (403) is fixedly connected to the top of the slide rod (402). The mounting bolt (404) is rotatably connected to the top of the slide plate (403). The connecting plate (406) is fixedly connected to the inside of the second slide rail (405). The mounting groove (407) is opened inside the connecting plate (406).

6. A cable tray for power engineering cable construction according to claim 1, characterized in that: The internal reinforcement mechanism (5) includes a frame (501), a reinforcement plate (502), and a square rib block (503). The frame (501) is fixedly connected to the bottom of the inner wall of the cable tray body (101), the reinforcement plate (502) is fixedly connected to the inside of the frame (501), and the square rib block (503) is fixedly connected to the top of the reinforcement plate (502).

7. A cable tray for power engineering cable construction according to claim 5, characterized in that: The first slide rail (401) and the second slide rail (405) have the same dimensions.

8. A cable tray for power engineering cable construction according to claim 4, characterized in that: There are two fixing grooves (307), which are located on both sides of the fixing plate (306).

9. A cable tray for power engineering cable construction according to claim 2, characterized in that: The cable tray body (101) is coated with fire-retardant paint both inside and outside.

10. A cable tray for power engineering cable construction according to claim 3, characterized in that: The width of the cover plate (203) is the same as the length and width of the cable tray body (101).