Fireproof cable bridge structure

Abstract

The utility model relates to the technical field of cable bridges, and discloses a fireproof cable bridge structure which solves the problem that an existing cable bridge is poor in fireproof performance and comprises a cable bridge body, a cover body is arranged at the top end of the cable bridge body, and a first flame-retardant heat insulation layer is arranged on the inner surface of the cable bridge body. The bottom surface of the cover body is provided with a second flame-retardant heat-insulating layer, the bottom end of the interior of the cable bridge body is provided with a first polytetrafluoroethylene heat-shrinkable combined sleeve, the middle position of the interior of the cable bridge body is provided with a middle flame-retardant layer, and the top end of the interior of the cable bridge body is provided with a second polytetrafluoroethylene heat-shrinkable combined sleeve. The first polytetrafluoroethylene thermal shrinkage combination sleeve and the second polytetrafluoroethylene thermal shrinkage combination sleeve are each composed of a plurality of polytetrafluoroethylene thermal shrinkage sleeve units, cable containing grooves are formed in the polytetrafluoroethylene thermal shrinkage sleeve units, and strip-shaped gaps are formed in the top ends of the polytetrafluoroethylene thermal shrinkage sleeve units. Through the cable bridge, the fireproof performance can be effectively improved, and the use safety is further improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to cable bridge technical field, concretely is a fireproof cable bridge structure. BACKGROUND

[0002] The fireproof cable bridge is suitable for the laying of 10KV or below power cable, control cable, lighting wiring and other indoor and outdoor overhead cable trench and tunnel. The fireproof cable bridge can prevent fire and improve safety, but the existing fireproof cable bridge generally has a fire-retardant spraying layer on the surface to achieve fireproof performance. The overall fireproof structure is relatively simple, the fireproof effect is not ideal, and there is still a certain safety hazard. Therefore, the fireproof cable bridge structure is provided. SUMMARY

[0003] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a fireproof cable bridge structure, which effectively solves the problem of poor fireproof performance of the existing cable bridge.

[0004] To achieve the above purpose, the utility model provides the following technical scheme: a fireproof cable bridge structure, comprising a cable bridge body, a cover body is arranged at the top end of the cable bridge body, a fire-retardant heat insulation layer one is arranged on the inner surface of the cable bridge body, a fire-retardant heat insulation layer two is arranged on the bottom surface of the cover body, a polytetrafluoroethylene heat shrinkage combined sleeve one is arranged at the bottom end inside the cable bridge body, a middle fire-retardant layer is arranged at the top of the polytetrafluoroethylene heat shrinkage combined sleeve one at the middle position inside the cable bridge body, a polytetrafluoroethylene heat shrinkage combined sleeve two is arranged at the top end of the middle fire-retardant layer inside the cable bridge body, the polytetrafluoroethylene heat shrinkage combined sleeve one and the polytetrafluoroethylene heat shrinkage combined sleeve two are both composed of a plurality of polytetrafluoroethylene heat shrinkage sleeve units, a cable placing groove is formed in the inside of the polytetrafluoroethylene heat shrinkage sleeve unit, and a strip-shaped gap is formed at the top end of the polytetrafluoroethylene heat shrinkage sleeve unit.

[0005] Preferably, the inner surface and the outer surface of the cable bridge body and the cover body are provided with a fire-retardant spraying layer.

[0006] Preferably, the middle fire-retardant layer, the fire-retardant heat insulation layer one and the fire-retardant heat insulation layer two are all composed of aluminum silicate needle felt, graphite felt and aerogel heat insulation felt, and the graphite felt is connected between the aluminum silicate needle felt and the aerogel heat insulation felt.

[0007] Preferably, the middle fire-retardant layer is fixedly provided with a tensile fiber interlayer in the inside.

[0008] Preferably, one side of the cable bridge body is fixedly provided with a clamping plate matched with the intermediate fire-retardant layer, the top end of the clamping plate is provided with a pressing plate matched with the intermediate fire-retardant layer, the pressing plate and the clamping plate are fixedly connected through a plurality of screws, and one side of the intermediate fire-retardant layer is connected between the pressing plate and the clamping plate.

[0009] Preferably, the other side of the cable bridge body is fixedly provided with a limiting connection sleeve, the side, away from the clamping plate, of the intermediate fire-retardant layer is fixedly provided with a T-shaped connecting beam, the T-shaped connecting beam is inserted into the top end of the limiting connection sleeve, and the top end of the T-shaped connecting beam is fixedly provided with a plurality of buckling plates.

[0010] Compared with the prior art, the cable bridge structure has the beneficial effects that:

[0011] (1) In work, the intermediate fire-retardant layer, the fire-retardant and heat-insulating layer one and the fire-retardant and heat-insulating layer two composed of the aluminum silicate needle felt, the graphite felt and the aerogel heat-insulating felt can improve the fire-retardant and heat-insulating performance, avoid the spread of fire and improve the safety when the fire occurs, the polytetrafluoroethylene heat-shrinkable combination sleeve one and the polytetrafluoroethylene heat-shrinkable combination sleeve two composed of a plurality of polytetrafluoroethylene heat-shrinkable sleeve units can classify and place different cables and simultaneously realize the coating of the cables, the heat-shrinkable coating can be realized when the cable is on fire due to short circuit and the like, air can be blocked, the spread of fire is further prevented, and the use safety is improved;

[0012] (2) The tensile strength of the intermediate fire-retardant layer is improved through the setting of the tensile fiber interlayer, the one side of the intermediate fire-retardant layer is fixedly installed through the setting of the clamping plate, the pressing plate and the screw, the other side of the intermediate fire-retardant layer is fixedly installed through the setting of the limiting connection sleeve, the T-shaped connecting beam and the buckling plate, and the intermediate fire-retardant layer is convenient to disassemble, and the convenience is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The accompanying drawings are included to provide a further understanding of the present application and constitute a part of the specification, illustrate the present application and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application.

[0014] In the drawings:

[0015] Figure 1 It is a schematic view of the fireproof cable bridge structure of the present application.

[0016] Figure 2 It is a partial enlarged view of the present application. Figure 1

[0017] Figure 3 It is a schematic view of the intermediate fire-retardant layer of the present application.

[0018] Figure 4 ​A structure schematic view of the polytetrafluoroethylene heat-shrinkable combined sleeve one of the utility model;

[0019] Figure 5 A structure schematic view of the fire-retardant heat insulation layer one of the utility model;

[0020] In the drawing: 1, cable bridge body; 2, cover; 3, fire-retardant heat insulation layer one; 4, fire-retardant heat insulation layer two; 5, polytetrafluoroethylene heat-shrinkable combined sleeve one; 6, middle fire-retardant layer; 7, polytetrafluoroethylene heat-shrinkable combined sleeve two; 8, polytetrafluoroethylene heat-shrinkable sleeve unit; 9, cable placing groove; 10, strip-shaped gap; 11, fire-retardant plastic-sprayed layer; 12, aluminum silicate needle-punched felt; 13, graphite felt; 14, aerogel heat insulation felt; 15, tensile fiber interlayer; 16, clamping plate; 17, pressing plate; 18, screw; 19, limiting connection clamping sleeve; 20, T-shaped connecting beam; 21, buckling plate. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] By Figures 1 to 4 The utility model discloses a fireproof cable bridge structure, including cable bridge body 1, the top of cable bridge body 1 is provided with cover 2, the inner surface of cable bridge body 1 is provided with fire-retardant heat insulation layer one 3, the bottom surface of cover 2 is provided with fire-retardant heat insulation layer two 4, the bottom of cable bridge body 1 inside is provided with polytetrafluoroethylene heat-shrinkable combined sleeve one 5, the middle position of cable bridge body 1 inside is provided with middle fire-retardant layer 6 at the top of polytetrafluoroethylene heat-shrinkable combined sleeve one 5, the top of cable bridge body 1 inside is provided with polytetrafluoroethylene heat-shrinkable combined sleeve two 7 at the top of middle fire-retardant layer 6, polytetrafluoroethylene heat-shrinkable combined sleeve one 5 and polytetrafluoroethylene heat-shrinkable combined sleeve two 7 all are formed by several polytetrafluoroethylene heat-shrinkable sleeve units 8, the inside of polytetrafluoroethylene heat-shrinkable sleeve unit 8 forms cable placing groove 9, and the top of polytetrafluoroethylene heat-shrinkable sleeve unit 8 is provided with strip-shaped gap 10;

[0023] Fire-retardant heat insulation layer one 3, fire-retardant heat insulation layer two 4 and middle fire-retardant layer 6 can improve overall fire-retardant heat insulation effect, avoid fire spreading, middle fire-retardant layer 6 can support polytetrafluoroethylene heat-shrinkable combined sleeve two 7 simultaneously, realize layering effect, polytetrafluoroethylene heat-shrinkable combined sleeve one 5 and polytetrafluoroethylene heat-shrinkable combined sleeve two 7 can realize the classification arrangement and cladding of different cables, when cable is on fire, can utilize heat shrinkage performance and tightly cladding cable, cut off air supply, further improve fire-retardant performance.

[0024] Given by Figure 1 , Figure 2 , Figure 3 and Figure 5 A flame-retardant spray coating layer 11 is provided on both the inner and outer surfaces of the cable tray body 1 and the cover body 2. The intermediate flame-retardant layer 6, the first flame-retardant and heat-insulating layer 3, and the second flame-retardant and heat-insulating layer 4 are all composed of aluminosilicate needle felt 12, graphite felt 13, and aerogel heat-insulating felt 14. The graphite felt 13 is connected between the aluminosilicate needle felt 12 and the aerogel heat-insulating felt 14;

[0025] The flame-retardant spray coating layer 11 can further improve the flame-retardant performance. The intermediate flame-retardant layer 6, the first flame-retardant and heat-insulating layer 3, and the second flame-retardant and heat-insulating layer 4 composed of aluminosilicate needle felt 12, graphite felt 13, and aerogel heat-insulating felt 14 can achieve multi-layer flame retardation and improve the flame-retardant effect;

[0026] Given by Figures 1 to 3 An anti-tensile fiber interlayer 15 is fixedly arranged inside the intermediate flame-retardant layer 6. On one side inside the cable tray body 1, a clamping plate 16 matching the intermediate flame-retardant layer is fixedly arranged. At the top of the clamping plate 16, a pressing plate 17 matching the intermediate flame-retardant layer is arranged. The pressing plate 17 and the clamping plate 16 are fixedly connected by a plurality of screws 18. One side of the intermediate flame-retardant layer 6 is connected between the pressing plate 17 and the clamping plate 16. On the other side inside the cable tray body 1, a limiting connection card sleeve 19 is fixedly arranged. On the side of the intermediate flame-retardant layer 6 away from the clamping plate 16, a T-shaped connection beam 20 is fixedly arranged. The T-shaped connection beam 20 is inserted into the top of the limiting connection card sleeve 19. At the top of the T-shaped connection beam 20, a plurality of buckling plates 21 are fixedly arranged;

[0027] The anti-tensile fiber interlayer 15 can improve the tensile performance of the intermediate flame-retardant layer 6. The clamping plate 16, the pressing plate 17, and the screws 18 can clamp and fix one side of the intermediate flame-retardant layer 6. The limiting connection card sleeve 19, the T-shaped connection beam 20, and the buckling plates 21 fix the other side of the intermediate flame-retardant layer 6, and at the same time facilitate the disassembly of the intermediate flame-retardant layer 6, improving the convenience of use.

[0028] In work, by setting the intermediate fire-retardant layer, the fire-retardant and heat-insulating layer one and the fire-retardant and heat-insulating layer two which are composed of aluminum silicate needle felt, graphite felt and aerogel heat insulation felt, the fire-retardant and heat-insulating performance can be improved, the fire spreading can be avoided when fire occurs, and the safety can be improved; by setting the polytetrafluoroethylene heat shrinkage combined sleeve one and the polytetrafluoroethylene heat shrinkage combined sleeve two which are composed of a plurality of polytetrafluoroethylene heat shrinkage sleeve units, different cables can be classified and placed, and the cables can be coated at the same time; when the cable ignites due to short circuit or other reasons, heat shrinkage coating can be realized, and then air can be blocked, further preventing the spread of fire and improving the safety in use; by setting the tensile fiber interlayer, the tensile strength of the intermediate fire-retardant layer can be improved; by setting the clamping plate, the pressing plate and the screw, one side of the intermediate fire-retardant layer can be fixed and installed; by setting the limiting connecting clamping sleeve, the T-shaped connecting beam and the buckling plate, the other side of the intermediate fire-retardant layer can be installed and fixed, and the intermediate fire-retardant layer can be easily disassembled, improving the convenience.

Claims

1. A fireproof cable bridge structure comprising a cable bridge body (1), characterized in that: The top end of the cable bridge body (1) is provided with a cover (2), the inner surface of the cable bridge body (1) is provided with a fire-retardant heat insulation layer one (3), the bottom surface of the cover (2) is provided with a fire-retardant heat insulation layer two (4), the bottom end inside the cable bridge body (1) is provided with a polytetrafluoroethylene heat shrinkage combined sleeve one (5), the middle position inside the cable bridge body (1) is provided with a middle fire-retardant layer (6) located at the top of the polytetrafluoroethylene heat shrinkage combined sleeve one (5), the top end inside the cable bridge body (1) is provided with a polytetrafluoroethylene heat shrinkage combined sleeve two (7) located at the top end of the middle fire-retardant layer (6), the polytetrafluoroethylene heat shrinkage combined sleeve one (5) and the polytetrafluoroethylene heat shrinkage combined sleeve two (7) are both composed of a plurality of polytetrafluoroethylene heat shrinkage sleeve units (8), the inside of the polytetrafluoroethylene heat shrinkage sleeve unit (8) forms a cable placing groove (9), and the top end of the polytetrafluoroethylene heat shrinkage sleeve unit (8) is provided with a strip-shaped gap (10).

2. The fireproof cable bridge structure according to claim 1, characterized in that: The inner surfaces and outer surfaces of the cable bridge body (1) and the cover (2) are provided with fire-retardant plastic spraying layers (11).

3. The fireproof cable bridge structure according to claim 1, characterized in that: The middle fire-retardant layer (6), the fire-retardant heat insulation layer one (3) and the fire-retardant heat insulation layer two (4) are all composed of aluminum silicate needle felt (12), graphite felt (13) and aerogel heat insulation felt (14), and the graphite felt (13) is connected between the aluminum silicate needle felt (12) and the aerogel heat insulation felt (14).

4. The fireproof cable bridge structure according to claim 1, characterized in that: The inside of the middle fire-retardant layer (6) is fixedly provided with a tensile fiber interlayer (15).

5. The fireproof cable bridge structure according to claim 1, characterized in that: One side inside the cable bridge body (1) is fixedly provided with a clamping plate (16) matched with the middle fire-retardant layer (6), the top end of the clamping plate (16) is provided with a pressing plate (17) matched with the middle fire-retardant layer (6), the pressing plate (17) and the clamping plate (16) are fixedly connected through a plurality of screws (18), and one side of the middle fire-retardant layer (6) is connected between the pressing plate (17) and the clamping plate (16).

6. The fire resistant cable tray structure of claim 5, wherein: The other side inside the cable bridge body (1) is fixedly provided with a limiting connection clamping sleeve (19), and the side, away from the clamping plate (16), of the middle fire-retardant layer (6) is fixedly provided with a T-shaped connecting beam (20) inserted into the top end of the limiting connection clamping sleeve (19), and the top end of the T-shaped connecting beam (20) is fixedly provided with a plurality of buckling plates (21).

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