Composite cable bridge with fireproof flame-retardant interlayer
By installing fire-retardant boards and heat dissipation and fireproof components inside the cable tray, the problem of fire spread from the cable tray is solved, achieving efficient fire-retardant performance and reusable heat dissipation and cooling effect, thus improving the safety and protection of the cable tray.
Patent Information
- Application Number
- CN202520440411.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-13
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-03-13
AI Technical Summary
Existing cable trays are prone to fire spread in the event of a fire, leading to an expansion of the fire area. They lack fire-retardant functions and are not safe or protective enough.
The cable tray housing and cover are equipped with first and second fire-retardant plates and heat dissipation and fireproof components, including baffles, fireproof covers, guide posts, threaded sleeves and connecting ropes. The fireproof covers can be disassembled and replaced through plug-in clips and slot structures, forming a composite cable tray.
It effectively blocks the spread of fire sources, prevents the fire from expanding, improves fire resistance and flame retardancy, and further blocks the spread of fire sources by cooling down during a fire. Moreover, the heat dissipation and fireproof components can be reused to reduce costs.
Smart Images

Figure CN223978377U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cable tray technology, specifically relating to a composite cable tray with a fireproof and flame-retardant interlayer. Background Technology
[0002] Cable trays are classified into various structures such as trough type, tray type, ladder type, and mesh type, and consist of supports, brackets, and installation accessories. Cable trays inside buildings can be installed independently or laid on various building (structure) supports 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 also permitted.
[0003] Existing cable trays are mostly single-layer shell structures. When a cable fire occurs inside the cable tray, the fire source will spread directly out, expanding the fire range and greatly reducing the safety and protection of the cable tray. They do not have fireproof and flame-retardant functions. Therefore, we propose a composite cable tray with a fireproof and flame-retardant interlayer. Utility Model Content
[0004] The purpose of this invention is to provide a composite cable tray with a fireproof and flame-retardant interlayer to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a composite cable tray with a fireproof and flame-retardant interlayer, comprising,
[0006] A cable tray housing, wherein a first cavity is provided on the cable tray housing, and a first fireproof and flame-retardant plate is provided in the first cavity;
[0007] A cable tray cover is inserted into the cable tray housing. A second cavity is provided on the cable tray cover, and a second fireproof and flame-retardant plate is provided in the second cavity.
[0008] The cable tray cover is provided with at least two of the heat dissipation and fire prevention components. The heat dissipation and fire prevention components are used to dissipate heat and cool down the inside of the cable tray housing, and to block the fire source when a fire occurs inside the cable tray housing.
[0009] Preferably, the upper end of the cable tray housing is provided with a plug-in strip extending to both sides, and the bottom of the cable tray cover is provided with a plug-in slot corresponding to the position of the plug-in strip, and the plug-in strip and the plug-in slot are adapted to be plugged in.
[0010] Preferably, the cable tray cover has a heat dissipation vent, and the heat dissipation and fireproof component is disposed on the cable tray housing and the cable tray cover at positions corresponding to the heat dissipation vent.
[0011] Preferably, the heat dissipation and fireproof component includes a baffle frame, a fireproof cover, a guide post, a threaded sleeve, and a connecting rope;
[0012] The baffle is disposed on the outside of the heat dissipation vent on the cable tray cover, the fireproof cover is disposed above the baffle, the guide post is disposed at the bottom of the fireproof cover, and the guide post guides through the cable tray cover and the plug-in clip to extend into the interior of the cable tray housing.
[0013] The threaded sleeve is threaded to the lower part of the guide post, and the threaded sleeve and the plug-in clip are supported and connected by the connecting rope.
[0014] Preferably, the cable tray cover and the plug-in clip have guide holes at positions corresponding to the guide posts, and the guide posts are guided and inserted into the guide holes.
[0015] Preferably, the lower part of the guide post is a threaded rod structure, the threaded sleeve is a threaded sleeve structure with a larger upper part and a smaller lower part, and the threaded sleeve and the guide post are threadedly connected.
[0016] Preferably, the upper end of the threaded sleeve has a connecting hole for attaching to the connecting rope.
[0017] Preferably, the upper end of the connecting rope is provided with a snap fastener, and the snap fastener strip is provided with a snap fastener groove that snaps into the snap fastener.
[0018] Compared with the prior art, the beneficial effects of this utility model are:
[0019] 1. This utility model provides a first fire-retardant plate inside the cable tray housing and a second fire-retardant plate inside the cable tray cover, forming a composite cable tray. When a fire occurs in the cables inside the cable tray, the first and second fire-retardant plates can effectively block the spread of the fire source, prevent the fire from spreading, and improve the fire-retardant performance of the cable tray.
[0020] 2. This utility model is equipped with a heat dissipation vent and a heat dissipation and fireproof component. The heat dissipation vent can dissipate the heat inside the cable tray. When a fire occurs inside the cable tray, the fire source will burn the connecting rope. At this time, the guide column moves downward along the guide hole, thereby causing the fireproof cover to cover the baffle frame outside the heat dissipation vent, preventing the fire from spreading. On the basis of heat dissipation and cooling, it further blocks the spread of the fire source and further improves the fireproof and flame-retardant performance of the cable tray.
[0021] 3. In this utility model, the connecting rope is provided with a plug-in buckle. The plug-in buckle is plugged into the plug-in buckle groove. When the connecting rope breaks or is burned by a fire source, a new connecting rope and plug-in buckle are replaced. Then, the guide post at the bottom of the fireproof cover is inserted along the guide hole. Then, the threaded sleeve is threaded to the guide post. Next, the new connecting rope is tied to the connecting hole of the threaded sleeve, so that the heat dissipation and fireproof components can be reused and the cost is reduced. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;
[0023] Figure 2 This is a side view of the structure of this utility model;
[0024] Figure 3 This is a cross-sectional three-dimensional structural diagram of the present invention;
[0025] Figure 4 This is a partial three-dimensional structural schematic diagram of the present invention;
[0026] Figure 5 This is a partial three-dimensional structural schematic diagram of the present invention;
[0027] Figure 6 for Figure 3 A magnified structural diagram of A in the middle;
[0028] Figure 7 This is a three-dimensional structural diagram of the threaded sleeve of this utility model;
[0029] Figure 8 This is a three-dimensional structural diagram of the connecting rope and the snap fastener of this utility model.
[0030] In the diagram: 1. Cable tray housing; 101. First cavity; 102. Connecting strip; 2. First fireproof and flame-retardant plate; 3. Cable tray cover; 301. Second cavity; 302. Connecting slot; 303. Heat dissipation vent; 4. Second fireproof and flame-retardant plate; 5. Heat dissipation and fireproof assembly; 501. Baffle frame; 502. Fireproof cover; 503. Guide post; 504. Threaded sleeve; 505. Connecting rope; 506. Connecting hole; 507. Connecting buckle; 508. Connecting buckle groove; 6. Guide hole. Detailed Implementation
[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0032] Please see Figures 1-8 The composite cable tray with fireproof and flame-retardant interlayer provided by this utility model includes,
[0033] The cable tray housing 1 has a first cavity 101, and a first fireproof and flame-retardant plate 2 is installed inside the first cavity 101.
[0034] The cable tray cover 3 is inserted into the cable tray housing 1. The upper end of the cable tray housing 1 is provided with insertion strips 102 extending to both sides. The bottom of the cable tray cover 3 is provided with insertion slots 302 corresponding to the positions of the insertion strips 102. The insertion strips 102 and the insertion slots 302 are adapted to be inserted. The cable tray cover 3 is provided with a second cavity 301. A second fireproof and flame-retardant plate 4 is provided in the second cavity 301.
[0035] The heat dissipation and fire prevention components 5 are provided on the cable tray cover 3. At least two heat dissipation and fire prevention components 5 are provided on the cable tray cover 3. The heat dissipation and fire prevention components 5 are used to dissipate heat and cool down the inside of the cable tray housing 1 and to block the fire source when a fire occurs inside the cable tray housing 1. The cable tray cover 3 is provided with heat dissipation vents 303. The heat dissipation and fire prevention components 5 are provided on the cable tray housing 1 and the cable tray cover 3 at the positions corresponding to the heat dissipation vents 303.
[0036] The heat dissipation and fireproof component 5 includes a baffle 501, a fireproof cover 502, a guide post 503, a threaded sleeve 504, and a connecting rope 505. The baffle 501 is located on the outside of the cable tray cover 3 corresponding to the heat dissipation vent 303. The fireproof cover 502 is located above the baffle 501. The guide post 503 is located at the bottom of the fireproof cover 502, and the guide post 503 guides through the cable tray cover 3 and the plug-in clip 102, extending into the interior of the cable tray housing 1. The threaded sleeve 504 is threaded to the lower part of the guide post 503, and the threaded sleeve 504 and the plug-in clip 102 are connected by the connecting rope 505. 05 Support connection: Guide holes 6 are provided on the cable tray cover 3 and the plug-in clip 102 at the positions corresponding to the guide post 503. The guide post 503 is inserted into the guide hole 6. The lower part of the guide post 503 is a threaded rod structure. The threaded sleeve 504 is a threaded sleeve structure with a larger upper part and a smaller lower part. The threaded sleeve 504 and the guide post 503 are threadedly connected. The upper end of the threaded sleeve 504 is provided with a connection hole 506 for attaching to the connecting rope 505. The upper end of the connecting rope 505 is provided with a plug-in buckle 507. The plug-in clip 102 is provided with a plug-in buckle groove 508 for plugging and buckling with the plug-in buckle 507.
[0037] This utility model provides a first fireproof and flame-retardant plate 2 inside the cable tray housing 1 and a second fireproof and flame-retardant plate 4 inside the cable tray cover 3, forming a composite cable tray. When a fire occurs in the cables inside the cable tray, the first fireproof and flame-retardant plate 2 and the second fireproof and flame-retardant plate 4 can effectively block the fire source from spreading outward, prevent the fire from spreading, and improve the fireproof and flame-retardant performance of the cable tray.
[0038] This utility model is equipped with a heat dissipation vent 303 and a heat dissipation and fireproof component 5. The heat dissipation vent 303 can dissipate the heat inside the cable tray. When a fire occurs inside the cable tray, the fire source will burn the connecting rope 505. At this time, the guide post 503 moves downward along the guide hole 6, thereby causing the fireproof cover 502 to cover the baffle 501 outside the heat dissipation vent 303 to prevent the fire from spreading. On the basis of heat dissipation and cooling, it further blocks the spread of the fire source and further improves the fireproof and flame-retardant performance of the cable tray.
[0039] Furthermore, the connecting rope 505 in this utility model is provided with a plug-in buckle 507, which is plugged into the plug-in buckle groove 508. When the connecting rope 505 breaks or is burned by a fire source, a new connecting rope 505 and plug-in buckle 507 are replaced. Then, the guide post 503 at the bottom of the fireproof cover 502 is guided and inserted along the guide hole 6. Then, the threaded sleeve 504 is threadedly connected to the guide post 503. Next, the new connecting rope 505 is tied into the connecting hole 506 on the threaded sleeve 504, so that the heat dissipation and fireproof component 5 can be reused, reducing costs.
[0040] 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 composite cable tray with fireproof flame-retardant interlayer, characterized in that, Including, The cable tray shell (1) is provided with a first cavity (101) on the cable tray shell (1), and a first fireproof and flame-retardant plate (2) is arranged in the first cavity (101); The cable tray cover (3) is inserted into the cable tray shell (1), and the cable tray cover (3) is provided with a second cavity (301), and a second fireproof and flame-retardant plate (4) is arranged in the second cavity (301); The cable tray cover (3) is provided with at least two heat dissipation and fireproof assemblies (5), which are used for heat dissipation and cooling in the cable tray shell (1), and can block the fire source when the fire occurs in the cable tray shell (1).
2. The composite cable tray with fireproof and flame-retardant interlayer according to claim 1, characterized in that: The upper end of the cable tray shell (1) is provided with an insertion clamping strip (102) extending to both sides, the bottom of the cable tray cover (3) is provided with an insertion clamping groove (302) corresponding to the position of the insertion clamping strip (102), and the insertion clamping strip (102) and the insertion clamping groove (302) are adaptively inserted.
3. The composite cable tray with fireproof and flame-retardant interlayer according to claim 2, characterized in that: The cable tray cover (3) is provided with a heat dissipation opening (303), and the heat dissipation and fireproof assembly (5) is arranged on the cable tray shell (1) and the cable tray cover (3) corresponding to the position of the heat dissipation opening (303).
4. The composite cable tray with fireproof and flame-retardant interlayer according to claim 3, characterized in that: The heat dissipation and fireproof assembly (5) comprises a blocking frame (501), a fireproof cover (502), a guide column (503), a threaded sleeve head (504) and a connecting rope (505); The blocking frame (501) is arranged on the outer side of the cable tray cover (3) corresponding to the heat dissipation opening (303), the fireproof cover (502) is arranged above the blocking frame (501), the guide column (503) is arranged at the bottom of the fireproof cover (502), and the guide column (503) extends into the interior of the cable tray shell (1) through the cable tray cover (3) and the insertion clamping strip (102); The threaded sleeve head (504) is threadedly connected to the lower part of the guide column (503), and the threaded sleeve head (504) and the insertion clamping strip (102) are supported and connected by the connecting rope (505).
5. The composite cable tray with fireproof and flame-retardant interlayer according to claim 4, characterized in that: The cable tray cover (3) and the insertion clamping strip (102) are provided with a guide hole (6) corresponding to the position of the guide column (503), and the guide column (503) is inserted into the guide hole (6).
6. The composite cable tray with fireproof and flame-retardant interlayer according to claim 5, characterized in that: The lower part of the guide column (503) is a threaded rod structure, the threaded sleeve head (504) is a sleeve structure with large upper part and small lower part, and the threaded sleeve head (504) and the guide column (503) are threadedly connected.
7. The composite cable tray with fireproof and flame-retardant interlayer according to claim 6, characterized in that: The upper end of the threaded sleeve head (504) is provided with a connecting hole (506) for connecting the connecting rope (505).
8. The composite cable tray with fireproof and flame-retardant interlayer according to claim 4, characterized in that: The upper end of the connecting rope (505) is provided with an insertion clamping head (507), and the insertion clamping strip (102) is provided with an insertion clamping groove (508) for inserting and clamping the insertion clamping head (507).