Floor structure of rail vehicle

Abstract

The present invention discloses a floor structure of a rail vehicle, comprising: a chassis, on which there are wire-passing openings for wire passing; a floor main body arranged on the chassis, the floor main body including a carbon fiber heat-insulating layer and a floor surface structure; a wire-passing hole structure arranged at the wire-passing openings, the wire-passing hole structure including a sleeve and a lower fireproof board, the upper end of the sleeve having an outward-turned edge lapped on the upper surface of the chassis, the lower end of the sleeve having an inward-turned edge, the lower fireproof board being connected to the inward-turned edge, a fireproof cavity for filling fireproof putty being formed by the upper top surface of the lower fireproof board and the inner wall of the sleeve, and the lower fireproof board having an opening for a cable to pass through. The floor structure of the rail vehicle provided by the present invention improves the fire resistance of the floor structure of the rail vehicle, so that the fire resistance of the floor structure of the rail vehicle meets the standard requirements.

Description

Technical Field

[0001] The present invention relates to the technical field of floors, and particularly to a floor structure for rail vehicles. Background Art

[0002] In the tests of the previous aluminum alloy rail vehicle floor structure samples, the samples did not have wire-passing holes. Therefore, it was only necessary to spray fireproof paint on the bottom of the sample chassis, lay heat insulation materials on the upper part of the chassis, and install the floor and floor cloth to meet the fireproof test requirements.

[0003] However, with customers paying more and more attention to the fireproof requirements of vehicles, and in addition, the rail vehicle floor structure itself needs to have wire-passing holes to connect the on-vehicle and off-vehicle lines, a rail vehicle floor structure with wire-passing holes and a fire resistance performance meeting the standard requirements (for example, in a 45-minute fire resistance test, the integrity, heat insulation, and deformation of the rail vehicle floor structure meet the requirements) must be put on the agenda. Summary of the Invention

[0004] The purpose of the present invention is to provide a floor structure for rail vehicles to improve the fire resistance performance.

[0005] To solve the above technical problems, the present invention provides a floor structure for rail vehicles, including:

[0006] A chassis, which has a wire-passing opening for wire passing;

[0007] A floor main body disposed on the chassis, the floor main body including a carbon fiber heat insulation layer and a floor surface layer structure;

[0008] A wire-passing hole structure disposed at the wire-passing opening, the wire-passing hole structure including a sleeve and a lower fireproof board. The upper end of the sleeve has an outwardly turned edge that overlaps the upper surface of the chassis, the lower end of the sleeve has an inwardly turned edge, the lower fireproof board is connected to the inwardly turned edge, a fireproof cavity for filling fireproof putty is formed by the upper top surface of the lower fireproof board and the inner wall of the sleeve, and the lower fireproof board has an opening for a cable to pass through.

[0009] Optionally, in the above floor structure for rail vehicles, the thickness of the carbon fiber heat insulation layer is 20 mm - 40 mm.

[0010] Optionally, in the above floor structure for rail vehicles, the floor surface layer structure includes a honeycomb floor layer and a floor cloth, and the honeycomb floor layer is located between the floor cloth and the carbon fiber heat insulation layer.

[0011] Optionally, in the above floor structure for rail vehicles, the floor main body further includes a sound insulation layer disposed between the floor surface layer structure and the chassis.

[0012] Optionally, in the above-mentioned floor structure of the rail vehicle, an aluminum foil adhesive is covered on the carbon fiber thermal insulation layer.

[0013] Optionally, in the above-mentioned floor structure of the rail vehicle, a fireproof paint layer is provided on the side of the underframe away from the floor main body.

[0014] Optionally, in the above-mentioned floor structure of the rail vehicle, a bolster and a rubber pad are provided between the underframe and the floor main body.

[0015] Optionally, in the above-mentioned floor structure of the rail vehicle, the lower fireproof board is fixed to the inwardly turned edge by self-tapping screws.

[0016] Optionally, in the above-mentioned floor structure of the rail vehicle, the wire passing hole structure further includes an upper fireproof board, and the upper fireproof board is fixed at the opening of the fireproof cavity.

[0017] Optionally, in the above-mentioned floor structure of the rail vehicle, the upper fireproof board is fixed to the outwardly turned edge by self-tapping screws.

[0018] The floor structure of the rail vehicle provided by the present invention has good high-temperature resistance and fire resistance on the basis of ensuring the heat insulation effect by setting a carbon fiber thermal insulation layer on the floor main body; moreover, the wire passing hole structure includes a sleeve and a lower fireproof board, and fireproof putty is filled in the fireproof cavity, so that the fireproof putty fills the space in the fireproof cavity except for the cables, further improving the high-temperature resistance and fire resistance effects at the wire passing hole, and thus improving the fire resistance of the floor structure of the rail vehicle, so that the fire resistance of the floor structure of the rail vehicle meets the standard requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a schematic structural diagram of the floor structure of the rail vehicle provided by the present invention;

[0020] Figure 2 is Figure 1 a partial enlarged view of part I in

[0021] Figure 3 is a schematic structural diagram of the sleeve provided by the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The core of the present invention is to provide a floor structure of a rail vehicle to improve the fire resistance.

[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0024] As Figure 1 , Figure 2 and Figure 3As shown in the figure, an embodiment of the present invention provides a floor structure for a rail vehicle, which includes a chassis 1, a floor main body, and a wire passing hole structure. The chassis 1 has a wire passing opening for passing wires; the floor main body is arranged on the chassis 1, and the floor main body includes a carbon fiber heat insulation layer 3 and a floor surface structure; the wire passing hole structure is arranged at the wire passing opening, and the wire passing hole structure includes a sleeve 5 and a lower fireproof board. The upper end of the sleeve 5 has an outward flange 51 lapped on the upper surface of the chassis 1, the lower end of the sleeve 5 has an inward flange 52, the lower fireproof board is connected to the inward flange 52, the upper top surface of the lower fireproof board and the inner wall of the sleeve 5 form a fireproof cavity for filling fireproof mortar, and the lower fireproof board has an opening for the cable to pass through.

[0025] The floor structure for a rail vehicle provided by the embodiment of the present invention, by arranging a carbon fiber heat insulation layer 3 in the floor main body, has good high-temperature resistance and fire resistance on the basis of ensuring the heat insulation effect; moreover, the wire passing hole structure includes a sleeve 5 and a lower fireproof board, and fireproof mortar is filled in the fireproof cavity, so that the fireproof mortar fills the space in the fireproof cavity except for the cable, further improving the high-temperature resistance and fire resistance effects at the wire passing hole, and then improving the fire resistance of the floor structure for a rail vehicle, making the fire resistance of the floor structure for a rail vehicle meet the standard requirements.

[0026] After the floor structure for a rail vehicle is assembled, the loading area and the thermocouple arrangement position are selected according to the sample size of the floor structure for a rail vehicle.

[0027] Meeting the standard requirements for fire resistance can mean that after a 45-minute fire resistance test, the integrity, heat insulation, and deformation of the floor structure for a rail vehicle meet the requirements. Specifically, the overall fire resistance of the floor structure for a rail vehicle will not burn through within 45 minutes, the average temperature will not exceed 140 °C, the local maximum temperature will not exceed 180 °C, and the overall deformation of the floor will not exceed 150 mm, etc.

[0028] The structural strength of the chassis 1 can withstand the chassis with a passenger load of 410 people / vehicle (9 people / square meter) under AW3. The chassis 1 is preferably an aluminum alloy double-layer hollow chassis profile, and its thickness is preferably 60 mm.

[0029] Furthermore, the thickness of the carbon fiber heat insulation layer 3 is 20 mm - 40 mm. Preferably, the thickness of the carbon fiber heat insulation layer 3 is 30 mm. The specific dimensions are not limited and are all within the protection scope.

[0030] Preferably, the carbon fiber heat insulation layer 3 is made of Osaka Gas carbon fiber raw silk with the model of RF C900N.

[0031] In this embodiment, the floor surface structure includes a honeycomb floor layer and a floor cloth, and the honeycomb floor layer is located between the floor cloth and the carbon fiber heat insulation layer 3. Among them, the honeycomb floor layer is an aluminum honeycomb floor, and the floor cloth is a rubber floor cloth.

[0032] The thickness of the aluminum honeycomb floor is preferably 18 mm, and the thickness of the rubber floor cloth is preferably 3 mm.

[0033] Furthermore, the floor main body further includes a sound insulation layer 2 disposed between the floor surface structure and the underframe 1. Among them, the sound insulation layer 2 can be disposed on the top surface of the carbon fiber heat preservation layer 3, or the sound insulation layer 2 can be disposed on the bottom surface of the carbon fiber heat preservation layer 3. The thickness of the sound insulation layer 2 can be 1 mm, or other dimensions, such as 1.2 mm or 4 mm, etc.

[0034] Furthermore, an aluminum foil back adhesive is covered on the carbon fiber heat preservation layer 3. By setting the aluminum foil back adhesive, while facilitating the arrangement of the carbon fiber heat preservation layer 3, the heat preservation effect is improved. Of course, the carbon fiber heat preservation layer 3 can also be arranged by applying heat insulation glue.

[0035] In the track vehicle floor structure provided by the embodiment of the present invention, a fireproof paint layer is provided on the surface of the underframe 1 away from the floor main body. Further improving the fireproof performance. Among them, the thickness of the fireproof paint layer is preferably 1.9 - 2.2 mm.

[0036] In order to improve the buffering effect and support stability, a cushion beam and a rubber pad are provided between the underframe 1 and the floor main body. Among them, the cushion beam is preferably an aluminum profile cushion beam with a thickness of 14 mm. The thickness of the rubber pad is preferably 5 mm.

[0037] In order to facilitate the maintenance and replacement of the cable after the fire resistance performance, the lower fireproof board is fixed to the inward flanging 52 by self - tapping screws. By setting the self - tapping screws, the installation of the lower fireproof board is facilitated, the generation of excessive gaps at the screw installation place is avoided, and the sealing performance is improved.

[0038] In this embodiment, the connection gap between the lower fireproof board and the sleeve 5 is sealed by a fireproof sealant. By sealing with the fireproof sealant, the sealing performance of the fireproof cavity is effectively improved, the leakage of fireproof putty is avoided, and the fireproof performance is ensured.

[0039] In the track vehicle floor structure provided by the embodiment of the present invention, the wire - passing hole structure further includes an upper fireproof board, and the upper fireproof board is fixed at the opening of the fireproof cavity. Among them, the upper fireproof board is also fixed by self - tapping screws. That is, the upper fireproof board is fixed to the outward flanging 51 by self - tapping screws. Through the above settings, the disassembly and assembly operation of the wire - passing hole structure is facilitated, the operation of replacing the cable in the follow - up is convenient, and maintenance is avoided.

[0040] And, the connection gap between the upper fireproof board and the sleeve 5 is also sealed by a fireproof sealant.

[0041] The above has introduced the floor structure of the rail vehicle provided by the present invention in detail. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A floor structure of an orbital vehicle, characterized in that, Comprising: A chassis (1), on one side of the chassis (1) away from the floor main body, a fireproof paint layer is provided, and the chassis (1) has a wire passing opening for wire passing; A floor main body disposed on the chassis (1), the floor main body comprising a carbon fiber heat preservation layer (3) and a floor surface structure; A wire passing hole structure disposed at the wire passing opening, the wire passing hole structure comprising a sleeve (5), a lower fireproof board and an upper fireproof board, the upper end of the sleeve (5) has an outward turning edge (51) lapped on the upper surface of the chassis (1), the lower end of the sleeve (5) has an inward turning edge (52), the lower fireproof board is connected to the inward turning edge (52), and the connection gap between the lower fireproof board and the sleeve (5) is sealed by a fireproof sealant; a fireproof cavity for filling fireproof putty is formed by the upper top surface of the lower fireproof board and the inner wall of the sleeve (5), the lower fireproof board has an opening for the cable to pass through, and the lower fireproof board is fixed to the inward turning edge (52) by self-tapping screws; the upper fireproof board is fixed at the opening of the fireproof cavity, the upper fireproof board is fixed to the outward turning edge (51) by self-tapping screws, and the connection gap between the upper fireproof board and the sleeve (5) is sealed by a fireproof sealant; wherein, fireproof putty is filled in the fireproof cavity so that the fireproof putty fills the space in the fireproof cavity except for the cable.

2. The floor structure of the rail vehicle according to claim 1, characterized in that, The thickness of the carbon fiber heat preservation layer (3) is 20mm - 40mm.

3. The floor structure of the rail vehicle according to claim 1, characterized in that, The floor surface structure comprises a honeycomb floor layer and a floor cloth, and the honeycomb floor layer is located between the floor cloth and the carbon fiber heat preservation layer (3).

4. The floor structure of the rail vehicle according to claim 1, characterized in that, The floor main body further comprises a sound insulation layer (2) disposed between the floor surface structure and the chassis (1).

5. The floor structure of the rail vehicle according to claim 1, characterized in that, The carbon fiber heat preservation layer (3) is covered with aluminum foil adhesive.

6. The floor structure of the rail vehicle according to claim 1, characterized in that, A cushion beam and a rubber pad are provided between the chassis (1) and the floor main body.

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