CN213035823U

CN213035823U - Floor structure of railway vehicle

Info

Publication number: CN213035823U
Application number: CN202022111295.3U
Authority: CN
Inventors: 孔维凤; 佟年; 张术; 徐金龙
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-04-23
Anticipated expiration: 2030-09-23

Abstract

The utility model discloses a rail vehicle floor structure, include: the bottom frame is provided with a wire passing hole for passing a wire; the floor main body is arranged on the underframe and comprises a carbon fiber heat insulation layer and a floor surface layer structure; set up in cross the line hole structure of line trompil department, cross the line hole structure and include sleeve and lower part PLASTIC LAMINATED, telescopic upper end have the overlap joint in the flanging of chassis upper surface, telescopic lower extreme has the inside flanging, the lower part PLASTIC LAMINATED with the inside flanging is connected, the last top surface of lower part PLASTIC LAMINATED reaches telescopic inner wall forms and fills the fire prevention cavity of fire prevention daub, the trompil that the power cable passed has on the lower part PLASTIC LAMINATED. The utility model provides a rail vehicle floor structure has improved rail vehicle floor structure's fire resistance for rail vehicle floor structure's fire resistance can satisfy the standard requirement.

Description

Floor structure of railway vehicle

Technical Field

The utility model relates to a floor technical field especially relates to a rail vehicle floor structure.

Background

In the test of the original aluminum alloy rail vehicle floor structure sample piece, the sample piece can not be provided with a line hole, so that the fireproof test requirement can be met only by spraying fireproof paint at the bottom of the underframe of the sample piece, paving a heat insulating material on the upper part of the underframe and installing a floor and floor cloth.

However, as customers pay more and more attention to the fire protection requirements of vehicles, in addition to the communication of the on-board and off-board lines of the railway vehicle floor structure, the railway vehicle floor structure with the line holes and the fire resistance meeting the standard requirements (for example, in a fire resistance test of 45 minutes, the integrity, the heat insulation and the deformation of the railway vehicle floor structure meet the requirements) must be scheduled.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rail vehicle floor structure improves fire resistance.

In order to solve the technical problem, the utility model provides a rail vehicle floor structure, include:

the bottom frame is provided with a wire passing hole for passing a wire;

the floor main body is arranged on the underframe and comprises a carbon fiber heat insulation layer and a floor surface layer structure;

set up in cross the line hole structure of line trompil department, cross the line hole structure and include sleeve and lower part PLASTIC LAMINATED, telescopic upper end have the overlap joint in the flanging of chassis upper surface, telescopic lower extreme has the inside flanging, the lower part PLASTIC LAMINATED with the inside flanging is connected, the last top surface of lower part PLASTIC LAMINATED reaches telescopic inner wall forms and fills the fire prevention cavity of fire prevention daub, the trompil that the power cable passed has on the lower part PLASTIC LAMINATED.

Optionally, in the above rail vehicle floor structure, the thickness of the carbon fiber insulation layer is 20mm to 40 mm.

Optionally, in the above rail vehicle floor structure, 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.

Optionally, in the above rail vehicle floor structure, the floor main body further includes a sound insulation layer disposed between the floor surface layer structure and the underframe.

Optionally, in the above rail vehicle floor structure, the carbon fiber insulating layer is covered with an aluminum foil adhesive.

Optionally, in the above rail vehicle floor structure, a fireproof paint layer is disposed on a side of the underframe, which is far away from the floor main body.

Optionally, in the above rail vehicle floor structure, a pad beam and a rubber pad are disposed between the underframe and the floor main body.

Optionally, in the above-described rail vehicle floor structure, the lower fire-proof plate is fixed to the inside gusset by a tapping screw.

Optionally, in the above rail vehicle floor structure, the wire passing hole structure further includes an upper fireproof plate, and the upper fireproof plate is fixed at an opening of the fireproof cavity.

Alternatively, in the above-described rail vehicle floor structure, the upper fire-proof plate may be fixed to the inside-out edge by a tapping screw.

The rail vehicle floor structure provided by the utility model has good high temperature resistance and fire resistance performance on the basis of ensuring the heat preservation effect by arranging the carbon fiber heat preservation layer on the floor main body; and, cross line hole structure and include sleeve and lower part PLASTIC LAMINATED to, fill fire prevention daub in the fire prevention cavity for fire prevention daub is filled in the space except that the cable in the fire prevention cavity, has further improved the high temperature resistant and fire-resistant effect of crossing line hole department, and then has improved rail vehicle floor structure's fire resistance, makes rail vehicle floor structure's fire resistance satisfy the standard requirement.

Drawings

Fig. 1 is a schematic structural view of a rail vehicle floor structure provided by the present invention;

FIG. 2 is an enlarged view of a portion I of FIG. 1;

fig. 3 is a schematic structural view of the sleeve according to the present invention.

Detailed Description

The utility model discloses a core provides a rail vehicle floor structure improves fire resistance.

In order to make the technical field better understand the solution of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings and the detailed description.

As shown in fig. 1, fig. 2 and fig. 3, the embodiment of the present invention provides a rail vehicle floor structure, which includes a bottom frame 1, a floor main body and a wire hole structure. The underframe 1 is provided with a wire passing hole for passing a wire; the floor main body is arranged on the underframe 1 and comprises a carbon fiber heat-insulating layer 3 and a floor surface layer structure; the line hole structure sets up in crossing line trompil department, crosses the line hole structure and includes sleeve 5 and lower part PLASTIC LAMINATED, and the upper end of sleeve 5 has overlap joint in the flanging 51 of chassis 1 upper surface, and the lower extreme of sleeve 5 has inside flanging 52, and the lower part PLASTIC LAMINATED is connected with inside flanging 52, and the last top surface of lower part PLASTIC LAMINATED and the inner wall of sleeve 5 form the fire prevention cavity of filling the fire prevention daub, have the trompil that the power cable passed on the lower part PLASTIC LAMINATED.

The rail vehicle floor structure provided by the embodiment of the utility model has good high temperature resistance and fire resistance performance on the basis of ensuring the heat preservation effect by arranging the carbon fiber heat preservation layer 3 on the floor main body; and, cross line hole structure and include sleeve 5 and lower part PLASTIC LAMINATED to, fill fire prevention daub in the fire prevention cavity, make fire prevention daub fill in the space in the fire prevention cavity except that the cable, further improved the high temperature resistant and fire-resistant effect of crossing line hole department, and then improved rail vehicle floor structure's fire resistance, make rail vehicle floor structure's fire resistance meet the standard requirement.

After the railway vehicle floor structure is assembled, the loading area and the thermocouple arrangement position are selected according to the sample size of the railway vehicle floor structure.

The requirement that the fire resistance meets the standard can be that after a fire resistance test of 45 minutes, the integrity, the heat insulation and the deformation of the floor structure of the railway vehicle meet the requirement. Specifically, the overall fire resistance of the railway vehicle floor structure can not be burnt through within 45 minutes, the average temperature can not exceed 140 ℃, the local maximum temperature can not exceed 180 ℃, the overall deformation of the floor can not exceed 150mm and the like.

The structural strength of undercarriage 1 can withstand AW3 passenger load 410 persons/vehicle (9 persons/square meter) undercarriage. The underframe 1 is preferably an aluminium alloy double-layer hollow underframe section, the thickness of which is preferably 60 mm.

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

Preferably, the carbon fiber heat-insulating layer 3 is made of Osaka gas carbon fiber precursor with the model number of RF C900N.

In this embodiment, 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-insulating layer 3. Wherein the honeycomb floor layer is an aluminum honeycomb floor, and the floor cloth is rubber floor cloth.

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

Further, the floor main body also comprises a sound insulation layer 2 arranged between the floor surface layer structure and the underframe 1. The sound insulation layer 2 can be arranged on the top surface of the carbon fiber heat insulation layer 3, and the sound insulation layer 2 can also be arranged on the bottom surface of the carbon fiber heat insulation layer 3. The sound insulation layer 2 may have a thickness of 1mm, or may have other dimensions, such as 1.2mm or 4 mm.

Further, the carbon fiber heat-insulating layer 3 is covered with aluminum foil gum. Through setting up the aluminium foil gum, when making things convenient for carbon fiber heat preservation 3 to arrange, improved the heat preservation effect. Of course, the carbon fiber insulating layer 3 can also be arranged by coating heat-insulating glue.

The embodiment of the utility model provides an among the rail vehicle floor structure, chassis 1 keeps away from the one side of floor main part and is provided with the fireproof paint layer. Further improving the fire-proof performance. Wherein, the thickness of the fireproof paint layer is preferably 1.9-2.2 mm.

In order to improve the buffering effect and the supporting stability, a pad beam and a rubber pad are arranged between the underframe 1 and the floor main body. Wherein, the backing beam is preferably an aluminum profile backing beam with the thickness of 14 mm. The thickness of the rubber mat is preferably 5 mm.

To facilitate maintenance and replacement of the cable after fire resistance, the lower fire shield is secured to the flange 52 by self-tapping screws. Through setting up self-tapping screw, made things convenient for the installation of lower part PLASTIC LAMINATED, avoided the too big gap of production of screw installation department, improved sealing performance.

In this embodiment, the joint gap between the lower fireproof plate and the sleeve 5 is sealed by a fireproof sealant. Through the sealing of the fireproof sealant, the sealing performance of the fireproof cavity is effectively improved, the leakage of fireproof mortar is avoided, and the fireproof performance is ensured.

The embodiment of the utility model provides an among the rail vehicle floor structure, cross the line hole structure and still include the upper portion PLASTIC LAMINATED, the upper portion PLASTIC LAMINATED is fixed in the opening part of fire prevention cavity. Wherein the upper fireproof plate is also fixed by self-tapping screws. That is, the upper fire shield is fixed to the burring 51 by tapping screws. Through the arrangement, the disassembly and assembly operation of the wire passing hole structure is facilitated, the subsequent operation of cable replacement is facilitated, and the maintenance is avoided.

And, the joint seam of the upper fireproof plate and the sleeve 5 is also sealed by fireproof sealant.

It is right above that the utility model provides a rail vehicle floor structure introduces in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A rail vehicle floor structure, comprising:

the base frame (1), the base frame (1) is provided with a wire passing hole for passing a wire;

the floor main body is arranged on the underframe (1) and comprises a carbon fiber heat-insulating layer (3) and a floor surface layer structure;

set up in cross line hole structure of line trompil department, cross line hole structure and include sleeve (5) and lower part PLASTIC LAMINATED, the upper end of sleeve (5) have the overlap joint in chassis (1) upper surface's flanging (51), the lower extreme of sleeve (5) has inside flanging (52), the lower part PLASTIC LAMINATED with inside flanging (52) are connected, the last top surface of lower part PLASTIC LAMINATED reaches the inner wall of sleeve (5) forms the fire prevention cavity of filling fire prevention daub, the trompil that has the power supply cable to pass on the PLASTIC LAMINATED of lower part.

2. Railway vehicle floor structure according to claim 1, characterized in that the thickness of the carbon fibre insulation layer (3) is 20-40 mm.

3. Railway vehicle floor structure according to claim 1, characterized in that the floor skin structure comprises a honeycomb floor layer and a floor cloth, the honeycomb floor layer being located between the floor cloth and the carbon fiber insulation layer (3).

4. Railway vehicle floor structure according to claim 1, characterized in that the floor body further comprises a sound insulation layer (2) arranged between the floor skin structure and the underframe (1).

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

6. Railway vehicle floor construction according to claim 1, characterized in that the side of the underframe (1) remote from the floor body is provided with a layer of fire-retardant lacquer.

7. Railway vehicle floor construction according to claim 1, characterized in that a pad beam and a rubber pad are arranged between the underframe (1) and the floor body.

8. The rail vehicle floor structure according to claim 1, wherein the lower fire shield is fixed to the inside flange (52) by a self-tapping screw.

9. The rail vehicle flooring structure of any of claims 1 to 8, wherein the wire passing hole structure further comprises an upper fire shield plate fixed to the opening of the fire-protected cavity.

10. The rail vehicle floor structure according to claim 9, wherein the upper fire shield is fixed to the burring (51) by a tapping screw.