Cable bridge with waterproof function
By installing cover plates and interlocking mechanisms at the cable tray connections, the problems of rainwater erosion in the gaps and cover plate detachment were solved, achieving both waterproofing and stability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANDONG CHENGZE ELECTRIC TECH CO LTD
- Filing Date
- 2025-06-03
- Publication Date
- 2026-05-29
AI Technical Summary
Traditional cable trays have gaps at the joints, which allow rainwater to easily enter the tray and corrode the cables. In addition, the cover plates are prone to detachment in strong winds, resulting in poor stability.
A cover plate and interlocking mechanism were designed. The cover plate covers the gap between adjacent cable trays and is stably connected to components such as limit grooves and hook plates through elastic telescopic rods or screws to prevent rainwater from entering and the cover plate from falling off.
It effectively prevents rainwater from eroding the cables, enhances the stability of the shield, ensures that the shield will not detach under strong winds, and improves waterproof performance and structural stability.
Smart Images

Figure CN224305322U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cable tray technology, specifically a waterproof cable tray. Background Technology
[0002] Cable trays are categorized into various structures such as trough-type, tray-type, ladder-type, and mesh-type, and consist of supports, brackets, and installation accessories. They can be installed independently or laid on various building and pipe rack supports, exhibiting characteristics such as simple structure, aesthetically pleasing appearance, flexible configuration, and convenient maintenance.
[0003] Compared to indoor cable trays, outdoor cable trays often face harsher environments, thus requiring higher standards of rain and wind protection. Traditional cable trays are typically assembled from a top cover and a lower trough using folded or flanged joints. The connection between the top cover and the lower trough is not always stable; furthermore, gaps exist at the joints between adjacent trays, allowing rainwater to seep into the tray and corrode the cables inside. Therefore, a waterproof cable tray is proposed. Utility Model Content
[0004] To address the shortcomings of existing technologies, this utility model provides a waterproof cable tray with a cover plate located above the gap between adjacent foundation cable trays, effectively preventing rainwater from entering the foundation cable tray through the gap and avoiding the corrosion of cables inside the tray by rainwater.
[0005] To achieve the above objectives, the present invention provides the following technical solution: a waterproof cable tray, comprising a trough and a cover plate, wherein the top edge of the trough extends outward to form a folded edge, and the edge of the cover plate is rolled up to form a plate sleeve that matches the folded edge, and the cover plate and the trough are combined to form a basic cable tray.
[0006] A cover plate is provided at the edge of the base cable tray to cover the gap between adjacent base cable trays, preventing rainwater from seeping into the base cable tray along the gap. An interlocking mechanism is provided between the cover plate and the base cable tray to connect the two.
[0007] Preferably, the interlocking mechanism includes several sets of through slots opened at the edge of the cover plate, and limiting slots opened at the edge of the cover plate corresponding to the through slots one by one. An elastic telescopic rod is installed in the through slot, and a limiting rod that cooperates with the limiting slot is fixed at the telescopic end of the elastic telescopic rod.
[0008] Preferably, the end of the limiting rod away from the elastic telescopic rod is fixed with a vertically arranged hook plate, and in the interlocked state, the hook plate is located at the bottom end of the plate sleeve.
[0009] Preferably, the interlocking mechanism includes a screw fixed to the bottom edge of the cover plate, and an upper through hole and a lower through hole that pass through the cover plate and the folded edge. The screw passes through the upper through hole and the lower through hole and is locked by a nut.
[0010] Preferably, the top of the cover plate is provided as an inclined surface, which is inclined from the center to the side.
[0011] Preferably, the bottom end of the trough frame is provided with several sets of drainage holes.
[0012] This utility model provides a waterproof cable tray, which has the following advantages compared with the prior art:
[0013] 1. A cover plate is installed. After the basic cable tray is assembled, the cover plate can be installed so that it is located above the gap between adjacent basic cable trays. This effectively prevents rainwater from entering the basic cable tray through the gap and avoids the corrosion of the cables in the tray by rainwater.
[0014] 2. An interlocking mechanism is provided. In the case of the interlocking mechanism in Embodiment 1, the cover plate can be conveniently installed on the top of the foundation cable tray. In the case of the interlocking mechanism in Embodiment 2, the cover plate and the channel frame can be fastened. Even in the face of strong winds, the cover plate can be prevented from falling off the channel frame, thus improving the stability of the cover plate. Attached Figure Description
[0015] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:
[0016] Figure 1 This is a schematic diagram of the cable tray structure in Embodiment 1 of this utility model;
[0017] Figure 2 This is a schematic diagram of part of the cable tray structure in Embodiment 1 of this utility model;
[0018] Figure 3 This is a structural separation diagram of the cover plate and the shield plate in Embodiment 1 of this utility model;
[0019] Figure 4 This is a schematic diagram of the cable tray assembly in Embodiment 1 of this utility model;
[0020] Figure 5 This is a schematic diagram of the cable tray structure in Embodiment 2 of this utility model;
[0021] Figure 6 This is a structural separation diagram of the slot frame, cover plate, and shield plate in Embodiment 2 of this utility model.
[0022] In the diagram: 1-channel frame, 2-folded edge, 3-cover plate, 4-plate sleeve, 5-shield plate, 6-drain hole, 7, 8-interlocking mechanism;
[0023] 71-Through groove, 72-Elastic telescopic rod, 73-Limiting rod, 74-Hook plate, 75-Limiting groove; 81-Screw, 82-Upper through hole, 83-Lower through hole, 84-Nut. Detailed Implementation
[0024] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.
[0025] Example 1
[0026] Outdoor cable trays often face harsher environments, with rain and strong winds causing the most severe corrosion. Currently, the connections between cable trays are usually directly exposed to the surrounding environment, allowing rainwater to seep into the trays through the gaps and corrode the cables. Furthermore, strong winds can cause the covers on the cable trays to detach. This embodiment provides a waterproof cable tray, such as… Figures 1-4 As shown, it includes a cable tray 1 and a cover plate 3. The bottom end of the cable tray 1 has several sets of drainage holes 6. Even if some rainwater enters the cable tray, it will drain to the outside through the drainage holes 6, preventing rainwater from accumulating inside the cable tray. The top of the cover plate 3 is set as an inclined surface, which slopes from the center to the side. When rainwater falls on the cover plate 3, it will quickly slide off the top surface of the cover plate 3, preventing rainwater accumulation. The top edge of the cable tray 1 extends outward to form a folded edge 2. The edge of the cover plate 3 is curled to form a plate sleeve 4 that matches the folded edge 2. The cover plate 3 and the cable tray 1 are combined to form a cable tray. After the cable tray is formed, the folded edge 2 is located inside the plate sleeve 4. The assembly of the two is relatively simple. Just align the plate sleeve 4 with the folded edge 2, and one end of the cover plate 3 can be inserted from one end of the cable tray 1.
[0027] A cover plate 5 is installed at the edge of the base cable tray to cover the gap between adjacent base cable trays, preventing rainwater from seeping into the base cable tray along the gap. An interlocking mechanism 7 is provided between the cover plate 5 and the base cable tray to connect the two. After the base cable tray is assembled, the cover plate 5 can be installed so that it is positioned above the gap between adjacent base cable trays, effectively preventing rainwater from entering the base cable tray through the gap. The specific installation of the cover plate 5 is described below.
[0028] The interlocking mechanism 7 in this embodiment includes several sets of through slots 71 formed on the side of the cover plate 5. Four sets of through slots 71 are evenly distributed on both sides of the cover plate 5. Four limiting slots 75 are also formed on the side of the cover plate 3, corresponding to the through slots 71. An elastic telescopic rod 72 is installed within each through slot 71, and a limiting rod 73 that cooperates with the limiting slot 75 is fixed to the telescopic end of each elastic telescopic rod 72. When installing the cover plate 5, the limiting rods 73 are pulled outwards to both sides, aligning them with the limiting slots 75. Then, the rods are slowly released. Under the pulling force of the elastic telescopic rods 72, the limiting rods 73 engage with the limiting slots 75, thereby clamping the cover plate 5 onto the cover plate 3, completing the installation of the cover plate 5. The overall operation is simple and convenient.
[0029] The above installation method only uses the limiting rod 73 to clamp onto the cover plate 3. However, in strong winds, the cover plate 5 may be lifted and detach from the cover plate 3. Therefore, a vertically positioned hook plate 74 is fixed to the end of the limiting rod 73 away from the elastic telescopic rod 72. In the interlocked state, the hook plate 74 is located at the bottom end of the cover sleeve 4. In this way, the hook plate 74 prevents the cover plate 5 from moving upwards, improving its stability.
[0030] Example 2
[0031] This is basically the same as Example 1, except that the interlocking mechanism 7 is replaced with the interlocking mechanism 8. (Refer to...) Figure 5-6 The interlocking mechanism 8 in this embodiment includes a screw 81 fixed to the bottom edge of the cover plate 5, and an upper through hole 82 and a lower through hole 83 penetrating through the plate sleeve 4 and the folded edge 2. The screw 81 passes through the upper through hole 82 and the lower through hole 83 and is locked by a nut 84. After the basic cable tray is connected, the upper through hole 82 on the plate sleeve 4 is aligned with the lower through hole 83 on the folded edge 2. At this time, the screw 81 on the cover plate 5 can be passed through the corresponding upper through hole 82 and lower through hole 83, and then the nut 84 can be screwed onto the screw 81 to realize the installation of the cover plate 5. Compared with the interlocking mechanism 7, the interlocking mechanism 8 realizes the fastening of the cover plate 3 and the trough frame 1 through the screw 81 and the nut 84. Even in the face of strong winds, the cover plate 3 will not fall off the trough frame 1. However, compared with the interlocking mechanism 7, the interlocking mechanism 8 is more complicated to install.
[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A waterproof cable tray, comprising a tray (1) and a cover plate (3), characterized in that: The top edge of the trough (1) extends outward to form a folded edge (2), and the edge of the cover plate (3) is rolled up to form a plate sleeve (4) that matches the folded edge (2). The cover plate (3) and the trough (1) are combined to form a basic cable tray. A cover plate (5) is provided at the edge of the base cable tray to cover the gap between adjacent base cable trays, preventing rainwater from seeping into the base cable tray along the gap. An interlocking mechanism (7,8) is provided between the cover plate (5) and the base cable tray to connect the two.
2. The waterproof cable tray according to claim 1, characterized in that: The interlocking mechanism (7) includes several sets of through slots (71) opened at the edge of the cover plate (5) and limiting slots (75) opened at the edge of the cover plate (3) corresponding to the through slots (71). An elastic telescopic rod (72) is installed in the through slot (71), and a limiting rod (73) that works in conjunction with the limiting slot (75) is fixed at the telescopic end of the elastic telescopic rod (72).
3. The waterproof cable tray according to claim 2, characterized in that: The end of the limiting rod (73) away from the elastic telescopic rod (72) is fixed with a vertically arranged hook plate (74). In the interlocked state, the hook plate (74) is located at the bottom of the plate sleeve (4).
4. The waterproof cable tray according to claim 1, characterized in that: The interlocking mechanism (8) includes a screw (81) fixed to the bottom edge of the cover plate (5), and an upper through hole (82) and a lower through hole (83) through the plate sleeve (4) and the folded edge (2). The screw (81) passes through the upper through hole (82) and the lower through hole (83) and is locked by a nut (84).
5. The waterproof cable tray according to claim 1, characterized in that: The top of the cover plate (3) is set as an inclined surface, which is inclined from the center to the side.
6. The waterproof cable tray according to claim 1, characterized in that: The bottom end of the trough (1) is provided with several sets of drainage holes (6).