Inclined self-fixing cable and cable trough box
By installing inclined baffles and hanging plates on the inner wall and outer shell of the cable tray, the cable can be self-fixed by its own weight, which solves the problems of fixing the cable tray in sloping sites and heat dissipation, and improves the efficiency and safety of cable installation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- 四川电力设计咨询有限责任公司
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-28
AI Technical Summary
When existing cable trays are laid on longitudinally sloping sites, there is a need for many fixing points, which makes binding difficult. Thermal expansion and contraction can cause the fixings to loosen, increasing construction costs and safety hazards, and the heat dissipation effect is poor.
Inclined baffles and hanging plates are installed on the inner wall of the cable tray and the outer shell of the cable to achieve self-fixation by the cable's own weight, reducing manual binding, increasing the cross-sectional area of the cable, and improving heat dissipation.
This enables cables to self-fix, improves installation efficiency, reduces construction costs, minimizes safety hazards, increases cable cross-section, improves heat dissipation, and ensures stable operation of the power system.
Smart Images
Figure CN224177864U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of high and low voltage cable technology, and in particular to a self-fixing inclined cable and cable tray. Background Technology
[0002] Modern production and daily life are inseparable from electricity, and cables are an important means of power transmission. Cables are laid in various ways, including underground, overhead, and in cable trays. Underground cables are effectively supported by the landfill material; overhead cables are effectively supported by suspension points; and with the rapid development of integrated utility tunnels, cable tray installation is becoming increasingly common. If the cable tray is horizontally laid, no cable support is needed. However, in most cases, the cable tray has a longitudinal slope, requiring the installation of fixed points to support the cables and prevent them from sliding down the smooth surface of the tray under their own weight, which could cause tensile damage to the cable heads, the cables themselves, or the cable tray.
[0003] Currently, commercially available cable trays and cable sheaths are all smooth, which presents the following problems when fixing conventional cables inside the trays:
[0004] 1. Numerous fixing points are required, with each cable typically needing a fixing point every 4 meters or less. These are usually secured using cable ties or wire binding. During installation, the fixing points must be sufficiently secure, while the binding force must be appropriate to avoid damaging the cable's outer sheath. These inherently conflicting installation requirements pose a significant challenge to construction workers. Ensuring construction quality requires a substantial amount of time and effort, making it difficult to meet project schedule requirements during large-scale installations. Furthermore, the weight of high-voltage cables and the smoothness of their outer sheaths make securing them using binding extremely difficult.
[0005] 2. In actual construction, conventional cable tray cable laying is divided into two processes: cable positioning and cable fixing. Cable positioning is the first process. After the cable is positioned, sufficient operating space must be reserved in the cable tray for the next process of cable fixing. This permanent operating space (which is also needed for later operation and maintenance) seriously reduces the effective cable passage cross-section of the cable tray and greatly increases the cost.
[0006] 3. After cables are put into operation and energized, thermal expansion and contraction will occur due to changes in external ambient temperature and their own heat generation. This will cause the originally firmly fixed support points to loosen. If the cables in the longitudinally sloping cable trays are not securely fixed, most of the downward force of the cable's own weight along the longitudinal direction of the tray will be borne by the cable head or a certain section of the cable. When the force exceeds the bearing limit of the cable's stress-bearing parts, the cable will be damaged. This greatly threatens the safe and stable operation of the power system and may even induce electrical fires or electric shock accidents, causing casualties. If the cable malfunctions and needs to be repaired or replaced, all fixing points must be loosened before the cable can be moved out of the tray, increasing the later maintenance costs.
[0007] 4. Outdoor cable trays are generally well-sealed. When cables run and generate heat, the enclosed trays cause heat to accumulate, resulting in cables operating in a high-temperature environment for extended periods, which increases the risk of electrical fires. Utility Model Content
[0008] The present invention provides a self-fixing inclined cable and cable tray, which improves cable installation efficiency and heat dissipation.
[0009] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0010] This utility model discloses a self-fixing inclined cable and a cable tray, including a cable and a cable tray. The inner wall of the bottom of the cable tray is provided with multiple baffles at intervals along its length. The outer shell of the cable is provided with multiple hanging plates that cooperate with the baffles at intervals along its length. The hanging plates correspond one-to-one with the baffles.
[0011] Furthermore, the mounting plate is arranged around the outer shell of the cable.
[0012] Furthermore, the height of the hanging plate is the same as the height of the baffle.
[0013] Furthermore, the baffle is inclined toward the inner wall of the cable tray bottom, and the hanging plate is inclined toward the outer shell of the cable, with the baffle having the same inclination angle as the hanging plate.
[0014] Furthermore, there is a gap between the baffle and the side wall of the cable tray.
[0015] Compared with the prior art, the beneficial effects of this utility model are:
[0016] This application provides a self-fixing inclined cable and cable tray. The cable tray has multiple baffles spaced apart on its inner wall at intervals, and the cable casing has multiple hanging plates that mate with the baffles at intervals, designed for cable laying on sloping terrain. During cable laying, a support frame is installed on the foundation of the construction site. The cable tray is fixedly mounted on the support frame, and the cable is placed inside the cable tray. The hanging plates are placed on the corresponding baffles of the cable tray. Under its own weight, the cable slightly slides downhill, and the hanging plates hook onto the corresponding baffles, stopping the cable's slide and achieving self-fixation. No manual binding is required, reducing the time and workload of on-site cable installation, disassembly, and maintenance, improving installation efficiency, ensuring installation progress, and facilitating later maintenance. The multiple hanging plates hooking onto multiple baffles provide better cable fixation, preventing the cable from sliding down again due to its own weight after fixing. The downward force on the cable head or a section of cable exceeding the cable's bearing capacity can damage the cable, affecting the safe and stable operation of the power system and reducing safety hazards. This invention also avoids damage to the cable caused by excessive manual binding force, improving installation quality. It eliminates the need for pre-reserved operating space for cable fixing, increasing the effective cable cross-section of the cable tray and reducing cable laying costs. It prevents loosening of binding supports due to thermal expansion and contraction, thus improving the fixing effect. The hanging plate supports the cable, preventing direct contact between the cable and the cable tray, allowing heat to dissipate quickly and improving heat dissipation, further reducing safety hazards. This invention's inclined self-fixing cable and cable tray are particularly suitable for cable laying in longitudinally sloping areas. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the cable tray and cable of a self-fixing inclined cable and cable tray provided in an embodiment of the present invention;
[0019] Figure 2 yes Figure 1 Enlarged view of section A in the middle;
[0020] Figure 3 yes Figure 1 Enlarged view of section B;
[0021] Figure 4 This is a top view of the bottom and baffle of the cable tray provided in this embodiment of the utility model;
[0022] Figure 5 yes Figure 4 Enlarged view of section C.
[0023] Figure label:
[0024] Cable tray 1, baffle 101, cable 2, hanging plate 201, gap 3. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.
[0027] like Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 As shown in the figure, this embodiment provides a self-fixing inclined cable and cable tray, including a cable 2 and a cable tray 1. Multiple baffles 101 are spaced apart along the length of the bottom of the cable tray 1. Multiple hanging plates 201, which cooperate with the baffles 101, are spaced apart along the length of the outer shell of the cable 2. Each hanging plate 201 corresponds to one of the baffles 101. There are at least three baffles 101 and at least three hanging plates 201. The baffles 101 are evenly distributed on the inner wall of the bottom of the cable tray 1, and the hanging plates 201 are evenly distributed on the outer shell of the cable 2. The baffles 101 are integrally formed with or bonded to the inner wall of the bottom of the cable tray 1, and the hanging plates 201 are integrally formed with or bonded to the outer shell of the cable 2. The spacing between adjacent baffles 101 is 30mm-50mm. The height of the mounting plate 201 is slightly lower or slightly higher than the height of the baffle 101. For example, if the height of the baffle 101 is 5mm-10mm, the height of the mounting plate 201 is 1mm lower than the height of the baffle 101, or the height of the mounting plate 201 is 1mm higher than the height of the baffle 101, or the height of the mounting plate 201 is the same as the height of the baffle 101. The cable tray 1 is rectangular in shape.
[0028] Based on the above structure, a self-fixing inclined cable and cable tray are provided. The inner wall of the cable tray bottom is equipped with multiple baffles at intervals, and the cable outer shell is equipped with multiple hanging plates that mate with the baffles at intervals. This design is used for cable laying on longitudinally sloping sites. During cable laying, supports are installed on the foundation of the civil engineering site. The supports are of uniform height to ensure that the longitudinal slope of the cable tray 1 is equal to the slope of the site. Similar to conventional cable tray installation methods, the cable tray is fixedly installed on the supports. Similar to conventional cable placement methods, after the cable has been manually or mechanically laid into position, it is moved into the cable tray. The cable hanging plates are placed on the baffles of the cable tray one by one. Under its own weight, the cable slides slightly downhill, and the hanging plates hook onto the corresponding baffles, stopping the cable's slide and achieving self-fixation. No manual binding is required, reducing the time and workload of on-site cable installation, disassembly, and maintenance, improving installation efficiency, ensuring installation progress, and facilitating later maintenance. Multiple hanging plates are also included. The hooks, mounted on multiple baffles, provide better cable fixation, preventing the cable from sliding back under its own weight after fixing. This prevents the cable head or a section of the cable from experiencing downward force exceeding the cable's load-bearing limit, which could damage the cable and affect the safe and stable operation of the power system, thus reducing safety hazards. It also avoids damage to the cable caused by excessive manual binding force, improving installation quality. The elimination of pre-reserved operating space for cable fixing increases the effective cable cross-section of the cable tray, reducing cable laying costs. Furthermore, it prevents the binding support points from loosening due to thermal expansion and contraction, thus ensuring effective fixation. The hanging plates support the cable, preventing direct, large-area contact between the cable and the cable tray, allowing for rapid heat dissipation and improving heat dissipation, further reducing safety hazards. This application's inclined self-fixing cable and cable tray are particularly suitable for cable laying in sloping terrain.
[0029] As one possible implementation method, such as Figure 1 , Figure 3 As shown, the mounting plate 201 is arranged around the outer shell of the cable 2.
[0030] The baffle 101 is perpendicular to the side wall of the cable tray 1. The hanging plate 201 is arranged around the outer shell of the cable 2 to form an annular hanging plate 201, which makes it easy to hang the hanging plate 201 on the baffle 101.
[0031] As one possible implementation method, such as Figure 1 , Figure 2 , Figure 3 As shown, the height of the hanging plate 201 is the same as the height of the baffle 101.
[0032] The mounting plate 201 fits into the inner wall of the bottom of the cable tray 1, and the baffle 101 fits into the outer shell of the cable 2, improving the overall integrity of the installation of the cable 2 and the cable tray 1, and allowing the mounting plate 201 to be better hooked onto the baffle 101.
[0033] In one possible implementation, the baffle 101 is inclined toward the inner wall of the bottom of the cable trough 1, and the hanging plate 201 is inclined toward the outer shell of the cable 2. The inclination angle of the baffle 101 is the same as the inclination angle of the hanging plate 201.
[0034] The baffle 101 and the hanging plate 201 are set at an angle. The hook of the hanging plate 201 is behind the hanging plate 201, and the hanging plate 201 is not easy to detach from the hanging plate 201. It can adapt to the cable laying of sloping sites with a larger slope.
[0035] As one possible implementation method, such as Figure 4 , Figure 5 As shown, there is a gap 3 between the baffle 101 and the side wall of the cable tray 1.
[0036] There is a gap 3 between the baffle 101 and the side wall of the cable tray 1, which is used to quickly dissipate the heat generated by the cable 2 and avoid the local temperature of the cable 2 from being too high. The spacing of the gap 3 is 10mm-15mm.
[0037] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.
Claims
1. A self-fixing inclined cable and cable tray, comprising a cable (2) and a cable tray (1), characterized in that, The inner wall of the cable trough (1) is provided with multiple baffles (101) at intervals along its length direction. The outer shell of the cable (2) is provided with multiple hanging plates (201) that cooperate with the baffles (101) at intervals along its length direction. The hanging plates (201) correspond one-to-one with the baffles (101).
2. The inclined self-fixing cable and cable tray according to claim 1, characterized in that, The mounting plate (201) is arranged around the outer shell of the cable (2).
3. The inclined self-fixing cable and cable tray according to claim 1, characterized in that, The height of the hanging plate (201) is the same as the height of the baffle (101).
4. The inclined self-fixing cable and cable tray according to claim 1, characterized in that, The baffle (101) is inclined toward the inner wall of the bottom of the cable trough (1), and the hanging plate (201) is inclined toward the outer shell of the cable (2). The inclination angle of the baffle (101) is the same as that of the hanging plate (201).
5. The inclined self-fixing cable and cable tray according to claim 1, characterized in that, There is a gap (3) between the baffle (101) and the side wall of the cable tray (1).