Fireproof bridge with drainage function
By combining drainage layers, ventilation windows and fireproof boards in the fireproof bridge tray, the drainage and fire protection problems of the fireproof bridge tray in humid environments are solved, and the safe and stable operation and low-cost maintenance of the cable bridge are achieved.
Patent Information
- Application Number
- CN202422094756.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-27
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-27
AI Technical Summary
The existing fire-proof bridges are prone to failure in humid environments, cannot solve the drainage and fire prevention problems at the same time, and are costly to maintain.
A fire-proof bridge with drainage function was designed, combining drainage layer, ventilation window, fire-proof board and water vapor absorption box. It uses a fire-proof board made of calcium silicate board, which is fastened by bolts and connected to the sliding groove for easy installation and replacement.
It realizes the safe and stable operation of the cable tray in humid environments, effectively eliminates water accumulation, prevents the spread of fire, and reduces maintenance costs.
Smart Images

Figure CN223218759U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bridge frames, in particular to a fireproof bridge frame with a drainage function. Background Art
[0002] Fireproof cable tray is a special cable tray, mainly used for laying indoor and outdoor overhead cable trenches and tunnels for power cables below 10KV, control cables, lighting wiring, etc. In the fields of electricity, communications and construction, cable tray is an important device for supporting and protecting cables. Its function and safety are directly related to the normal operation of cable lines.
[0003] At present, although there are some cable tray products with waterproof or fireproof functions on the market, they often have single functions and cannot solve the two problems of drainage and fire prevention at the same time. At the same time, fireproof materials are easily ineffective due to humid environments during use and are difficult to replace, which increases maintenance costs. For this reason, we have proposed a fireproof cable tray with drainage function. Utility Model Content
[0004] (1) Technical problems solved
[0005] In view of the deficiencies in the prior art, the present invention provides a fireproof bridge with drainage function, which solves the above problems.
[0006] (2) Technical solution
[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a fireproof bridge with drainage function, comprising a bridge upper shell, the lower end of the bridge upper shell is movably connected to the bridge lower shell, the clamping point of the bridge upper shell and the bridge lower shell is fixed by bolts, the lower ends of both sides of the bridge upper shell are fixedly connected to a plurality of equally distributed ventilation windows, the lower ends of both sides of the inner wall of the bridge lower shell are fixedly connected to the mounting plate, a cavity is formed between the bottom inner wall of the bridge lower shell and the mounting plate as a drainage layer, the top inner wall of the bridge upper shell is fixedly connected to a plurality of water vapor absorption boxes, and further comprising:
[0008] The fireproof structure is arranged on the inner walls of the upper shell of the bridge and the lower shell of the bridge to prevent the bridge from being disturbed by fire.
[0009] Preferably, the ventilation window is a structure that protrudes outward and opens downward.
[0010] Preferably, the fireproof structure includes an installation plate, an installation groove, a fireproof board and an installation slide groove. Both ends of the inner walls of the upper shell of the bridge and the lower shell of the bridge are fixedly connected with matching installation slide grooves. The installation slide grooves are movably connected with installation plates. Installation grooves are opened on both sides of the installation plate. The fireproof board is fixedly connected in the installation grooves.
[0011] Preferably, the fireproof board is made of calcium silicate board.
[0012] Preferably, the mounting plate is provided with a plurality of water leakage holes distributed in a matrix.
[0013] Preferably, the bottom of the drainage layer bulges outward to form a drainage groove, and the bottom inner wall of the drainage groove is inclined from the middle to both ends.
[0014] (3) Beneficial effects
[0015] Compared with the existing technology, the present invention provides a fireproof bridge with drainage function, which has the following beneficial effects:
[0016] This fireproof cable tray with drainage combines drainage and fire protection, ensuring safe and stable operation in humid environments. By providing a drainage layer, this device effectively solves the problem of water accumulation inside the cable tray, preventing cable failures caused by moisture. Furthermore, fireproof panels and moisture absorption boxes are installed inside the cable tray for easy installation and replacement, ensuring the effectiveness of the fireproof material and reducing maintenance costs.
[0017] 2. The fireproof board in the fireproof bridge with drainage function is made of high temperature resistant and corrosion resistant fireproof material, and is installed inside the bridge through a simple card slot connection method. It is not only easy to install but also quick to replace. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the structure of the utility model;
[0019] Figure 2 This is a schematic diagram of the split structure of the utility model;
[0020] Figure 3 This is a schematic diagram of the disassembly of the fire protection structure of the utility model;
[0021] Figure 4 This is a schematic cross-sectional view of the drainage layer of the present invention.
[0022] In the figure: 1. Upper shell of the bridge; 2. Lower shell of the bridge; 3. Ventilation window; 4. Drainage layer; 5. Water vapor absorption box; 6. Mounting plate; 7. Fireproof structure; 8. Mounting plug plate; 9. Mounting groove; 10. Fireproof board; 11. Leakage hole; 12. Mounting slide. DETAILED DESCRIPTION
[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0024] See also Figure 1-4 A fireproof bridge with drainage function, including a bridge upper shell 1, the lower end of the bridge upper shell 1 is movably connected to the bridge lower shell 2, the connection between the bridge upper shell 1 and the bridge lower shell 2 is fixed by bolts, the lower ends of both sides of the bridge upper shell 1 are fixedly connected to a plurality of equally distributed ventilation windows 3, the lower ends of both sides of the inner wall of the bridge lower shell 2 are fixedly connected to the mounting plate 6, a cavity is formed between the bottom inner wall of the bridge lower shell 2 and the mounting plate 6 as a drainage layer 4, the top inner wall of the bridge upper shell 1 is fixedly connected to a plurality of water vapor absorption boxes 5, and further includes:
[0025] The fireproof structure 7 is arranged on the inner wall of the upper shell 1 and the lower shell 2 of the bridge frame to prevent the bridge frame from being disturbed by fire. The upper shell 1 and the lower shell 2 of the bridge frame are fixedly connected by bolts to form a closed channel for supporting and accommodating cables and other pipelines. The water vapor absorption box 5 is installed on the top inner wall of the upper shell of the bridge frame to absorb water vapor that may be generated inside the bridge frame and keep the internal environment of the bridge frame dry.
[0026] Furthermore, the ventilation windows 3 are of a structure that bulges outward and opens downward. The ventilation windows 3 are arranged at the lower ends of both sides of the bridge. The structure that bulges outward and opens downward can not only maintain ventilation inside the bridge, but also prevent rain or dust from entering.
[0027] Furthermore, the fireproof structure 7 includes an installation plate 8, an installation groove 9, a fireproof board 10 and an installation slide 12. Both ends of the inner wall of the bridge upper shell 1 and the bridge lower shell 2 are fixedly connected with matching installation slides 12. The installation plate 8 is movably inserted in the installation slide 12. Installation grooves 9 are opened on both sides of the installation plate 8, and the fireproof board 10 is fixedly connected in the installation groove 9.
[0028] Furthermore, the material of the fireproof board 10 is calcium silicate board. The fireproof board 10 is made of calcium silicate board and has excellent fireproof performance. It can effectively prevent the spread of fire and protect the bridge and the cables and other pipelines therein from fire.
[0029] Furthermore, a plurality of water leakage holes 11 distributed in a matrix are provided on the mounting plate 6 .
[0030] Furthermore, the bottom of the drainage layer 4 bulges outward to form a drainage trough, and the bottom inner wall of the drainage trough is inclined from the middle to both ends. The drainage layer 4 is located at the bottom of the lower shell 2 of the bridge frame to form a drainage trough, and its bottom is inclined from the middle to both ends to facilitate the discharge of accumulated water.
[0031] Working principle: The bridge is composed of two upper and lower shells, which are fixedly connected by bolts to form a closed channel. At the lower ends of both sides of the bridge, there are ventilation windows 3 that protrude outward and open downward. These ventilation windows not only maintain ventilation inside the bridge, effectively dissipate heat, and prevent cables from overheating, but also prevent rainwater or dust from entering the bridge. A drainage layer 4 is designed at the bottom of the bridge, the bottom of which protrudes outward to form a drainage trough. The inner wall of the bottom side of the drainage trough tilts from the middle to both ends, forming a natural drainage slope. This design can ensure that the accumulated water inside the bridge is discharged smoothly, avoiding damage to cables and other pipelines caused by accumulated water. A fireproof structure 7 is installed inside the bridge, which consists of an installation plug plate 8, an installation groove 9, a fireproof board 10 and an installation slide 12. The fireproof board 10 is made of calcium silicate board and has excellent fireproof performance. It can effectively prevent the spread of fire when a fire occurs and protect cables and other pipelines in the bridge from damage. The mounting plate 8 can be conveniently installed and disassembled through the mounting slide 12, making the replacement and maintenance of the fireproof board simple and quick. A plurality of water vapor absorption boxes 5 are installed on the inner wall of the top of the bridge. These boxes are made of high-efficiency moisture-absorbing materials and can absorb water vapor that may be generated inside the bridge, keeping the internal environment of the bridge dry, helping to prevent cables and other pipelines from being damaged by moisture, and improving the service life and safety of the bridge.
[0032] Although the 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 variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A fireproof bridge with drainage function, comprising a bridge upper shell (1), characterized in that: The lower end of the bridge frame upper shell (1) is movably connected to the bridge frame lower shell (2), and the connection between the bridge frame upper shell (1) and the bridge frame lower shell (2) is fixed by bolts. The lower ends of both sides of the bridge frame upper shell (1) are fixedly connected to a plurality of equally spaced ventilation windows (3), and the lower ends of both sides of the inner wall of the bridge frame lower shell (2) are fixedly connected to mounting plates (6). A cavity is formed between the bottom inner wall of the bridge frame lower shell (2) and the mounting plates (6) as a drainage layer (4), and the top inner wall of the bridge frame upper shell (1) is fixedly connected to a plurality of water vapor absorption boxes (5), and further comprises: A fireproof structure (7) is provided on the inner walls of the bridge upper shell (1) and the bridge lower shell (2) and is used to prevent the bridge from being disturbed by fire.
2. The fireproof bridge with drainage function according to claim 1, characterized in that: The ventilation window (3) is a structure that protrudes outwards and has a ventilation opening facing downwards.
3. The fireproof bridge with drainage function according to claim 1, characterized in that: The fireproof structure (7) includes an installation plug plate (8), an installation groove (9), a fireproof board (10) and an installation slide groove (12). Both ends of the inner wall of the bridge upper shell (1) and the bridge lower shell (2) are fixedly connected with matching installation slide grooves (12). The installation plug plate (8) is movably inserted into the installation slide groove (12). Both sides of the installation plug plate (8) are provided with installation grooves (9), and the fireproof board (10) is fixedly clamped in the installation groove (9).
4. The fireproof bridge with drainage function according to claim 3, characterized in that: The material of the fireproof board (10) is calcium silicate board.
5. The fireproof bridge with drainage function according to claim 1, characterized in that: The mounting plate (6) is provided with a plurality of water leakage holes (11) distributed in a matrix.
6. The fireproof bridge with drainage function according to claim 1, characterized in that: The bottom of the drainage layer (4) bulges outward to form a drainage groove, and the inner wall of the bottom side of the drainage groove is inclined from the middle to both ends.