阅读说明：本技术 一种地板装置及轨道车辆 (Floor device and rail vehicle ) 是由 张建敏 郭会生 傅振亮 刘晨辉 张丽博 于 2021-07-16 设计创作，主要内容包括：本申请实施例中提供了一种地板装置及轨道车辆,包括：底板组件,用于为车体提供支撑；隔热层,用于隔绝车体上方和车体下方的热量；内装地板,用于为车内人员及设备提供支撑,底板组件、隔热层、内装地板自下至上依次设置；地梁,与底板组件固定连接,地梁设于内装地板的下方进行支撑；固定于底板组件宽度方向的两侧的辅助支撑组件,用于与车体侧墙固定连接,以为底板组件提供抗变形刚度。应用地板装置及轨道车辆,在底板组件的宽度方向的两侧设置辅助支撑组件,辅助支撑组件与车体侧墙固定连接,增加底板组件的刚度以对底板组件在高温下的弯曲变形进行抑制,有效提高地板装置在高温下承重性能；为乘客疏散或逃生争取时间。(The embodiment of the application provides a floor device and rail vehicle, includes: a floor assembly for providing support to the vehicle body; the heat insulation layer is used for isolating heat above the vehicle body and heat below the vehicle body; the built-in floor is used for providing support for people and equipment in the vehicle, and the bottom plate component, the heat insulation layer and the built-in floor are sequentially arranged from bottom to top; the ground beam is fixedly connected with the bottom plate assembly and is arranged below the built-in floor for supporting; and the auxiliary support assemblies are fixed on two sides of the width direction of the bottom plate assembly and are fixedly connected with the side wall of the vehicle body to provide deformation-resistant rigidity for the bottom plate assembly. The floor device and the rail vehicle are applied, the auxiliary supporting assemblies are arranged on two sides of the bottom plate assembly in the width direction and are fixedly connected with the side wall of the vehicle body, the rigidity of the bottom plate assembly is increased to inhibit the bending deformation of the bottom plate assembly at high temperature, and the bearing performance of the floor device at high temperature is effectively improved; to strive for time for passenger evacuation or escape.)

1. A flooring apparatus, comprising:

a floor assembly for providing support to the vehicle body;

the heat insulation layer is used for isolating heat above the vehicle body and heat below the vehicle body;

the built-in floor is used for providing support for people and equipment in the vehicle, and the bottom plate assembly, the heat insulation layer and the built-in floor are sequentially arranged from bottom to top;

the ground beam is fixedly connected with the bottom plate assembly and is arranged below the built-in floor for supporting;

and the auxiliary support assemblies are fixed on two sides of the width direction of the bottom plate assembly and are fixedly connected with the side wall of the vehicle body so as to provide deformation-resistant rigidity for the bottom plate assembly.

2. The flooring apparatus of claim 1, wherein the auxiliary support assembly is disposed perpendicular to the floor assembly, the auxiliary support assembly comprising:

the first auxiliary support side wall and the second auxiliary support side wall are respectively fixed above the bottom plate assembly and are respectively welded and fixed with the side wall of the vehicle body;

the first auxiliary support side wall, the bottom plate assembly and the second auxiliary support side wall form a U-shaped cavity.

3. The flooring arrangement of claim 2, further comprising:

the first fireproof expansion sealing adhesive layer is arranged at the joint between the first auxiliary support side wall and the bottom plate assembly;

and the second fireproof expansion sealing adhesive layer is arranged at the joint between the second auxiliary support side wall and the bottom plate assembly.

4. A flooring arrangement as claimed in claim 3, wherein the floor assembly comprises:

a chassis;

the chassis floor is integrally arranged and welded above the chassis;

the first auxiliary supporting side walls are respectively welded and fixed with the edge beam of the underframe and the edge beam of the underframe floor, and the first fireproof expansion sealing glue layers are respectively covered above the welding line and are continuously arranged along the welding line;

the second auxiliary supporting side walls are respectively welded and fixed with the edge beam of the bottom frame and the edge beam of the bottom frame floor, and the second fireproof expansion sealing glue layers are respectively covered above the welding seams and are continuously arranged along the welding seams.

5. The flooring arrangement of claim 3, further comprising:

the fireproof expansion coating is arranged on the inner bottom wall or the outer bottom wall of the bottom frame; and/or the fireproof expansion coating is arranged on the inner bottom wall or the outer bottom wall of the underframe floor.

6. The floor apparatus of claim 1, further comprising a pipeline installation assembly for pipeline passing to communicate above and below the vehicle body, the pipeline installation assembly comprising:

the pipeline installation sleeve is provided with a first through hole for the pipeline comprehensive piece to pass through;

first fire prevention inflation shutoff layer, first fire prevention inflation shutoff layer is located in the first through-hole to when the thermal expansion, block up the gap between first through-hole and pipeline are synthesized.

7. The flooring arrangement of claim 6, wherein the pipeline installation assembly further comprises:

the Z-shaped pipeline mounting seat is provided with a second through hole for the Z-shaped pipeline to pass through, the Z-shaped pipeline mounting seat is fixed with the bottom plate assembly, and the Z-shaped pipeline mounting seat is arranged at the corner of the Z-shaped pipeline;

the Z-shaped pipeline mounting seat comprises a first side wall and a second side wall, the first side wall is used for being attached to the horizontal side wall of the Z-shaped pipeline, and the second side wall is attached to the upper surface of the bottom plate assembly;

and the second fireproof expansion plugging layer is arranged between the second side wall of the Z-shaped pipeline mounting seat and the upper surface of the bottom plate assembly and between the lower surface of the bottom plate assembly and the Z-shaped pipeline.

8. The floor arrangement as claimed in claim 4, wherein said ground beam is welded to said floor assembly;

the ground beam is a U-shaped ground beam, the heat insulation layer is embedded into a U-shaped cavity of the U-shaped ground beam, the upper surface of the heat insulation layer is attached to the inner top wall of the U-shaped ground beam, and the outer top wall of the U-shaped ground beam is attached to the lower wall of the built-in floor for supporting;

the distance between the outer top wall of the U-shaped ground beam and the underframe floor is greater than the distance between the upper surface of the heat insulation layer and the underframe floor.

9. The floor device as claimed in claim 4, wherein the floor assembly is a concave floor assembly, the ground beam is a concave ground beam, the concave ground beam is correspondingly disposed above the concave floor assembly, the thermal insulation layer is filled between the concave ground beam and the concave floor assembly, and the ground beam and the floor assembly are welded and fixed;

further comprising:

the adjusting pad is arranged between the upper surface of the floor beam and the interior floor and used for leveling the interior floor; the adjusting pad is rubber or PVC or wood adjusting pad.

10. A floor arrangement as claimed in any one of claims 1 to 9, wherein the insulation is rock wool insulation or glass wool insulation.

11. A rail vehicle is characterized by comprising a vehicle body side wall, a cable and the floor device of any one of claims 1-10, wherein the side wall of the auxiliary support component of the floor device is attached to the vehicle body side wall and is welded and fixed; a bottom plate assembly of the floor device is fixedly welded with the side wall of the vehicle body;

the cable passes the bottom plate subassembly, the inside electric wire that is equipped with of cable, the electric wire with be equipped with fire prevention inflation shutoff layer between the cable.

12. The rail vehicle of claim 11, wherein the rail vehicle is a double-deck rail vehicle, and wherein both a mid-deck floor and a sub-deck floor of the double-deck rail vehicle are the floor arrangement.

Technical Field

The application relates to rail vehicle technology, specifically relates to a floor device and rail vehicle.

Background

A floor assembly of a common passenger car for a railway vehicle mainly comprises an aluminum alloy car body underframe, a ground beam is made of rubber piles or wood ribs, heat insulation materials are common glass wool, polyester fibers and the like, and through holes are sealed by foaming agents. Due to the problems of cost or technical requirements, the cold-proof material only considers the theoretical heat-insulating property, and when the bottom plate assembly is removed to catch a fire or passes through a fire scene, the floor assembly deforms under the high-temperature condition, so that the bearing and energy absorption of the bottom plate assembly under the high temperature cannot be ensured; and the floor component has poor fire resistance and energy absorption, can not bear high-temperature roasting, and the heat-insulating property can not meet the test requirement.

Disclosure of Invention

The embodiment of the application provides a floor device and a railway vehicle, and aims to solve the problems that an existing floor component is not enough in rigidity and cannot protect safety of personnel and equipment in the vehicle due to bending deformation at high temperature.

A floor device, comprising:

a floor assembly for providing support to the vehicle body;

the heat insulation layer is used for isolating heat above the vehicle body and heat below the vehicle body;

the built-in floor is used for providing support for people and equipment in the vehicle, and the bottom plate assembly, the heat insulation layer and the built-in floor are sequentially arranged from bottom to top;

the ground beam is fixedly connected with the bottom plate assembly and is arranged below the built-in floor for supporting;

and the auxiliary support assemblies are fixed on two sides of the width direction of the bottom plate assembly and are fixedly connected with the side wall of the vehicle body so as to provide deformation-resistant rigidity for the bottom plate assembly.

Preferably, the auxiliary support assembly is disposed perpendicular to the base plate assembly, and the auxiliary support assembly includes:

the first auxiliary support side wall and the second auxiliary support side wall are respectively fixed above the bottom plate assembly and are respectively welded and fixed with the side wall of the vehicle body;

the first auxiliary support side wall, the bottom plate assembly and the second auxiliary support side wall form a U-shaped cavity.

Preferably, the method further comprises the following steps:

the first fireproof expansion sealing adhesive layer is arranged at the joint between the first auxiliary support side wall and the bottom plate assembly;

and the second fireproof expansion sealing adhesive layer is arranged at the joint between the second auxiliary support side wall and the bottom plate assembly.

Preferably, the base plate assembly comprises:

a chassis;

the chassis floor is integrally arranged and welded above the chassis;

the first auxiliary supporting side walls are respectively welded and fixed with the edge beam of the underframe and the edge beam of the underframe floor, and the first fireproof expansion sealing glue layers are respectively covered above the welding line and are continuously arranged along the welding line;

the second auxiliary supporting side walls are respectively welded and fixed with the edge beam of the bottom frame and the edge beam of the bottom frame floor, and the second fireproof expansion sealing glue layers are respectively covered above the welding seams and are continuously arranged along the welding seams.

Preferably, the method further comprises the following steps:

the fireproof expansion coating is arranged on the inner bottom wall or the outer bottom wall of the bottom frame; and/or the fireproof expansion coating is arranged on the inner bottom wall or the outer bottom wall of the underframe floor.

Preferably, the pipeline installation assembly is used for pipeline passing to communicate the position above the vehicle body and the position below the vehicle body, and comprises:

the pipeline installation sleeve is provided with a first through hole for the pipeline comprehensive piece to pass through;

first fire prevention inflation shutoff layer, first fire prevention inflation shutoff layer is located in the first through-hole to when the thermal expansion, block up the gap between first through-hole and pipeline are synthesized.

Preferably, the pipeline installation assembly further comprises:

the Z-shaped pipeline mounting seat is provided with a second through hole for the Z-shaped pipeline to pass through, the Z-shaped pipeline mounting seat is fixed with the bottom plate assembly, and the Z-shaped pipeline mounting seat is arranged at the corner of the Z-shaped pipeline;

the Z-shaped pipeline mounting seat comprises a first side wall and a second side wall, the first side wall is used for being attached to the horizontal side wall of the Z-shaped pipeline, and the second side wall is attached to the upper surface of the bottom plate assembly;

and the second fireproof expansion plugging layer is arranged between the second side wall of the Z-shaped pipeline mounting seat and the upper surface of the bottom plate assembly and between the lower surface of the bottom plate assembly and the Z-shaped pipeline.

Preferably, the ground beam is fixed with the bottom plate assembly in a welding mode;

the ground beam is a U-shaped ground beam, the heat insulation layer is embedded into a U-shaped cavity of the U-shaped ground beam, the upper surface of the heat insulation layer is attached to the inner top wall of the U-shaped ground beam, and the outer top wall of the U-shaped ground beam is attached to the lower wall of the built-in floor for supporting;

the distance between the outer top wall of the U-shaped ground beam and the underframe floor is greater than the distance between the upper surface of the heat insulation layer and the underframe floor.

Preferably, the bottom plate assembly is a concave bottom plate assembly, the ground beam is a concave ground beam, the concave ground beam is correspondingly arranged above the concave bottom plate assembly, the heat insulation layer is filled between the concave ground beam and the concave bottom plate assembly, and the ground beam and the bottom plate assembly are welded and fixed;

further comprising:

the adjusting pad is arranged between the upper surface of the floor beam and the interior floor and used for leveling the interior floor; the adjusting pad is rubber or PVC or wood adjusting pad.

Preferably, the heat insulation layer is a rock wool heat insulation layer or a glass wool heat insulation layer.

Adopt the floor device that provides in the embodiment of this application, include: a floor assembly for providing support to the vehicle body; the heat insulation layer is used for isolating heat above the vehicle body and heat below the vehicle body; the built-in floor is used for providing support for people and equipment in the vehicle, and the bottom plate component, the heat insulation layer and the built-in floor are sequentially arranged from bottom to top; the ground beam is fixedly connected with the bottom plate assembly and is arranged below the built-in floor for supporting; and the auxiliary support assemblies are fixed on two sides of the width direction of the bottom plate assembly and are fixedly connected with the side wall of the vehicle body to provide deformation-resistant rigidity for the bottom plate assembly.

Compared with the prior art, the floor device provided by the application has the following technical effects:

the heat insulation layer is arranged to isolate heat above the vehicle body from heat below the vehicle body, the auxiliary support assemblies are arranged on two sides of the bottom plate assembly in the width direction and fixedly connected with the side wall of the vehicle body, the rigidity of the bottom plate assembly is increased to inhibit bending deformation of the bottom plate assembly at high temperature, and the bearing performance of the floor device at high temperature is effectively improved; to strive for time for passenger evacuation or escape.

The application also provides a rail vehicle which comprises a vehicle body side wall, a cable and the floor device of any one of the embodiments, wherein the side wall of the auxiliary support component of the floor device is attached to the vehicle body side wall and is welded and fixed; a bottom plate component of the floor device is fixedly welded with the side wall of the vehicle body; the cable passes the bottom plate subassembly, and the cable is inside to be equipped with the electric wire, is equipped with fire prevention inflation shutoff layer between electric wire and cable. Due to the technical effects of the floor device, the rail vehicle with the floor device also has corresponding technical effects.

Preferably, the rail vehicle is a double-deck rail vehicle, and both a middle floor and a sub-floor of the double-deck rail vehicle are the floor device according to any one of the above embodiments.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

fig. 1 is a schematic structural diagram of a floor device according to an embodiment of the present disclosure;

FIG. 2 is an enlarged partial schematic view of the Z-shaped pipeline mount of FIG. 1;

FIG. 3 is a schematic view of a floor system according to another embodiment of the present application;

fig. 4 is a partially enlarged schematic view of fig. 3.

The reference numbers are as follows:

the device comprises an underframe 1, an underframe floor 2, a heat insulation layer 3, an interior floor 4, a ground beam 5, floor cloth 6, a pipeline 7, a first fireproof expansion plugging layer 8, a wire harness 9, a pipeline installation sleeve 10, a cable 11, a Z-shaped pipeline 12, a Z-shaped pipeline installation seat 13, an auxiliary support assembly 14, a fireproof expansion sealing coating 15, a second fireproof expansion plugging layer 16, a wire casing 17, an adjusting pad 18 and a fireproof expansion sealing glue layer 19.

Detailed Description

In the process of implementing the application, the inventor finds that the existing floor assembly has the problems of bending deformation at high temperature, insufficient rigidity, incapability of protecting safety of personnel and equipment in a vehicle and poor fire resistance.

Referring to fig. 1 to 4, fig. 1 is a schematic structural diagram of a floor device according to an embodiment of the present disclosure;

FIG. 2 is an enlarged partial schematic view of the Z-shaped pipeline mounting base 13 of FIG. 1; FIG. 3 is a schematic view of a floor system according to another embodiment of the present application; fig. 4 is a partially enlarged schematic view of fig. 3.

In response to the above problems, the present embodiment provides a floor system comprising a floor assembly, insulation 3, an interior flooring 4, a floor beam 5 and an auxiliary support assembly 14. Wherein the bottom plate assembly comprises a base frame 1 and a base frame floor 2. The underframe 1 supports the vehicle and is a bearing body for the rigidity of the whole vehicle, and is generally made of aluminum alloy or steel. The underframe floor 2 is integrally welded or arranged in an integrated manner to separate the interior and exterior of the car body and support the parts on the car body floor.

The heat insulation layer 3 is generally disposed above the floor assembly and welded to the floor assembly for isolating heat inside and outside the vehicle body, and the heat insulation layer 3 may be made of glass wool or rock wool, which is a heat insulating material having high heat insulating performance and high ignition point. The built-in floor 4 is arranged above the heat insulation layer 3 and is used for providing support for people and equipment in the vehicle; preferably, the floor cloth 6 is adhered to the upper part, and the lower part of the interior floor 4 is fixed to the floor beam 5 by adhesion or fastening. The floor beams 5 are fixedly connected, e.g. welded, to the floor assembly, which supports the interior floor 4 and provides some thermal insulation.

The two sides of the width direction of the bottom plate component are respectively provided with an auxiliary supporting component 14, and the auxiliary supporting components 14 are fixedly connected with the side wall of the vehicle body, such as by welding or threaded fasteners. The auxiliary support member 14 is preferably welded to the floor member to provide a unitary body that provides the floor member with rigidity against deformation. Preferably, the auxiliary support assembly 14 and the floor assembly are vertically disposed, and the height of the auxiliary support assembly 14 is preferably less than one meter to further provide rigidity to the floor assembly to prevent the floor assembly from bending and deforming under high temperature load bearing conditions.

It will be appreciated that the auxiliary support members 14 may be disposed above or below the floor assembly, depending on where the floor assembly is mounted on the vehicle body, such as when the floor assembly is used as an intermediate floor for a double-deck rail vehicle, the auxiliary support members 14 may be disposed in any direction of the floor assembly; when the flooring apparatus is used as a bottom floor of a double-deck railway vehicle, the auxiliary support assembly 14 is preferably disposed above the floor assembly to optimize the installation space.

Compared with the prior art, the floor device provided by the application has the following technical effects:

the heat insulation layer is arranged to isolate heat above the vehicle body from heat below the vehicle body, the auxiliary support assemblies are arranged on two sides of the bottom plate assembly in the width direction and fixedly connected with the side wall of the vehicle body, the rigidity of the bottom plate assembly is increased to inhibit bending deformation of the bottom plate assembly at high temperature, and the bearing performance of the floor device at high temperature is effectively improved; to strive for time for passenger evacuation or escape.

Specifically, the auxiliary support assembly 14 includes a first auxiliary support sidewall and a second auxiliary support sidewall. The first auxiliary support side wall and the second auxiliary support side wall are respectively fixed above the bottom plate assembly and are respectively welded and fixed with the side wall of the vehicle body; the first auxiliary supporting side walls are continuously arranged along the length direction of the bottom plate assembly, and similarly, the second auxiliary supporting side walls are continuously arranged along the length direction of the bottom plate assembly so as to improve the deformation resistance of the bottom plate assembly. The first auxiliary support side wall and the second auxiliary support side wall are welded and fixed with the side wall of the vehicle body respectively, and when the bottom plate assembly is heated to deform, counter force and rigidity are provided through the first auxiliary support side wall and the second auxiliary support side wall so as to prevent the bottom plate assembly from bending and deforming. The first auxiliary support side wall, the bottom plate assembly and the second auxiliary support side wall form a U-shaped cavity, and the U-shaped cavity is stable in structure and good in bending deformation resistance effect. In an embodiment, the first auxiliary support side wall and the second auxiliary support side wall may be configured in the shape of an arc-shaped side wall according to the cross-sectional shape of the vehicle body side wall, so as to increase the contact area with the vehicle body side wall and further increase the maximum counter force counterbalanced by the deformation tension of the bottom plate assembly.

In order to prevent the fire source or heat from entering the vehicle body from the joint of the auxiliary supporting component 14 and the bottom plate component, a fireproof expansion sealing glue layer 19 is arranged at the joint of the auxiliary supporting component 14 and the bottom plate component, and the fireproof collision sealing glue layer 19 expands when being heated to block the gap of the joint, so that the fire source and the heat are further isolated, the fire resisting time of the floor device in a fire scene is prolonged, and the fire resistance are improved.

The first fireproof expansion sealing glue layer is arranged at the joint between the first auxiliary support side wall and the bottom plate assembly; the second fireproof expansion sealing glue layer is arranged at the joint between the second auxiliary support side wall and the bottom plate assembly.

In one embodiment, the floor assembly comprises a chassis and a chassis floor 2 integrally provided; the underframe floor 2 is welded above the underframe 1; the first auxiliary supporting side wall is respectively welded and fixed with the edge beam of the bottom frame 1 and the edge beam of the bottom frame floor 2, and the first fireproof expansion sealing glue layer is arranged at the welding seam between the first auxiliary supporting side wall and the edge beam of the bottom frame 1 and the welding seam between the first auxiliary supporting side wall and the edge beam of the bottom frame floor 2 and is continuously arranged along the length direction of each welding seam; similarly, the second auxiliary supporting side walls are respectively welded and fixed with the edge beam of the underframe 1 and the edge beam of the underframe floor 2, and the second fireproof expansion sealing glue layers are respectively covered above all welding seams and are continuously arranged along the welding seams.

Further, in order to ensure the fire-resistant integrity of the floor device, the floor device further comprises a fire-resistant intumescent coating 15, wherein the fire-resistant intumescent coating 15 is arranged on the inner bottom wall or the outer bottom wall of the underframe 1; and/or, the fireproof expansion coating 15 is arranged on the inner bottom wall or the outer bottom wall of the underframe floor 2, and the fireproof expansion coating 15 is arranged at the position based on the difference of the materials of the underframe 1 and the underframe floor 2. The fire-resistant intumescent coating 15 expands when heated in a fire scene, isolating the fire scene from the floor assembly and further improving the fire resistance of the floor arrangement.

Specifically, when the floor device is required to pass a pipeline therethrough, the floor device further includes a pipeline installation assembly for passing the pipeline therethrough to communicate between the upper side of the vehicle body and the lower side of the vehicle body, and the pipeline assembly generally includes a pipeline 7, a cable, a wire harness 9, and the like, which is preferably made of stainless steel or carbon steel, and is ventilated in the pipeline or passed through the wire cable. The pipeline installation assembly comprises a pipeline installation sleeve 10 and a first fireproof expansion plugging layer 8, wherein the pipeline installation sleeve 10 is provided with a first through hole for a pipeline comprehensive piece to pass through; the pipeline installation sleeve 10 is welded and fixed with the bottom plate assembly, and it can be understood that the bottom plate assembly is provided with an installation hole for a pipeline to pass through.

Pipeline installation cover 10 is located in the mounting hole and welds in its circumference, general welding is on chassis floor 2, there is the gap between pipeline synthesis piece in pipeline installation cover 10 and the first through-hole, the hole etc., for further improvement floor device's fire behavior, set up first fire prevention inflation shutoff layer 8 in first through-hole, when it is the thermal expansion, block up the gap between first through-hole and pipeline installation cover 10, and have fire resistance, with separation pipeline installation cover 10 both ends, prevent that source of a fire or heat from passing first through-hole and getting into inside the automobile body. Generally, the thickness of the material is 0.8-1.2 mm in a normal state, and the material expands 150 times after being heated.

Wherein the pipeline installation assembly further comprises a Z-shaped pipeline installation seat 13 and a second fireproof expansion plugging layer 16. The Z-shaped pipeline 12 comprises two first pipelines arranged in parallel and a second pipeline arranged perpendicular to the first pipelines, the Z-shaped pipeline mounting seat 13 is provided with a second through hole for the Z-shaped pipeline 12 to pass through, the Z-shaped pipeline mounting seat 13 is fixed with the bottom plate assembly, for example, welded and fixed, and the Z-shaped pipeline mounting seat 13 is arranged at the corner of the Z-shaped pipeline 12; namely the joint of the first pipeline and the second pipeline, the Z-shaped pipeline mounting seat 13 comprises a first side wall and a second side wall, the first side wall is used for being attached to the horizontal side wall of the Z-shaped pipeline 12, and the second side wall is attached to the upper surface of the bottom plate component; by this arrangement, the gap between the bottom plate assembly and the Z-shaped pipeline is eliminated, and a fireproof sealing structure is formed, so that the heat or the fire source can be blocked by the first side wall, the second side wall, the horizontal side wall of the Z-shaped pipeline 12 and the upper surface of the bottom plate assembly even if the heat or the fire source passes through the second fireproof expansion sealing layer between the lower surface of the bottom plate assembly and the Z-shaped pipeline.

The first side wall and the circumferential side wall of the second pipeline are fitted to provide support for the installation of the Z-pipeline 12. Similarly, in order to prevent gaps between the Z-shaped pipeline 12 and the bottom plate assembly, a second fireproof expansion plugging layer 16 is respectively arranged between the second side wall of the Z-shaped pipeline mounting seat 13 and the bottom plate assembly, and between the bottom plate assembly and the Z-shaped pipeline 12; based on the specific structure of the Z-shaped pipeline installation base 13, it is inconvenient to arrange the second fireproof expansion blocking layer 16 between the first through hole and the Z-shaped pipeline 12, so the second fireproof expansion blocking layer 16 is arranged between the bottom plate assembly and the Z-shaped pipeline 12; in order to prevent the fire or heat from entering the interior of the vehicle body through the gap between the second side wall and the upper surface of the floor member, a second fire-resistant intumescent sealant layer 16 is disposed between the second side wall and the floor member.

Further, the ground beam 5 is fixedly welded with the bottom plate assembly, generally welded on the underframe floor 2 and is positioned below the built-in floor 4 for supporting; the ground beam 5 is a U-shaped ground beam 5, the heat insulation layer 3 is embedded into a U-shaped cavity of the U-shaped ground beam, the upper surface of the heat insulation layer 3 is attached to the inner top wall of the U-shaped ground beam, and the outer top wall of the U-shaped ground beam is attached to the lower wall of the built-in floor 4 for supporting; the distance between the outer top wall of the U-shaped floor beam and the underfloor 2 is greater than the distance between the upper surface of the insulation layer 3 and the underfloor 2 to insulate the interior floor 4 from the floor assembly. The U-shaped cavity of the U-shaped ground beam 5 is filled with the heat insulation layer 3, so that a hollow cavity cannot be formed between the U-shaped ground beam 5 and the bottom plate assembly, and the heat insulation effect is further improved by filling the heat insulation layer 3. The ground beam 5 supports the inner installed floor 4 to ensure that the thickness and the state of the heat insulation layer 3 are not affected and ensure that the heat insulation layer 3 is always in a heat insulation state.

The specific operation process is as follows: when a vehicle is on fire or passes through a fire scene, the underframe 1 and the underframe floor 2 are firstly roasted by the heat of the fire scene, the fireproof expansion coating is expanded by heat, the direct contact of the fire scene to the bottom plate component is isolated, and the temperature of the fire scene is isolated or slowed down to be transferred to the bottom plate component;

meanwhile, due to the fireproof heat insulation effect of the fireproof expansion coating, a small amount of temperature or heat energy is transferred to the heat insulation layer 3, the heat insulation layer 3 insulates heat, and the heat is reduced from being transferred to the inside of the vehicle through the built-in floor 4 and the floor cloth 6; a small amount of temperature or heat energy is transferred to the ground beam 5, the ground beam 5 supports the built-in floor 4, the initial positions of the built-in floor 4 and the floor cloth 6 are ensured, and the thickness and the state of the heat insulation layer 3 are not influenced;

the pipeline 7 in the pipeline comprehensive part is influenced by heat, and the pipeline 7 is made of stainless steel or carbon steel and can prevent fire/heat from reaching the interior of the vehicle through the pipeline; after the first fireproof expansion plugging layer 8 between the pipeline 7 and the pipeline installation sleeve 10 is heated, the pipeline installation sleeve 10 is filled with the first fireproof expansion plugging layer in an expansion mode, and a fire source or heat is isolated from being transmitted into a vehicle from a gap between the pipeline 7 and the pipeline installation sleeve 10; the wire bundle 9 in the pipeline complex is affected by heat, and the original gap inside or the gap generated after the surface skin of the wire burns is blocked after being heated by the first fireproof expansion blocking layer 8, so that heat or a fire source is isolated;

similarly, when the cable 11 in the pipeline complex is affected by heat, the surface of the cable 11 is provided with a metal steel wire mesh, a plurality of bundles/wires are arranged inside the cable, and the surface of the wire is a combustible nonmetal; there are also gaps between the wire combinations inside the cable 11. When the cable 11 is acted by a fire source or heat, gaps originally existing in the cable or gaps generated after the surface of the electric wire burns are plugged by the first fireproof expansion plugging layer 8 after being heated, so that the transmission or invasion of the heat/fire source is blocked; when the pipeline installation sleeve 10 and the pipeline complex are acted by heat/fire source, the first fireproof expansion blocking layer 8 expands to fill the gap, and the gap for isolating the fire/heat is transmitted to the interior of the vehicle.

When the floor device is ignited under a vehicle or passes through a fire scene, the floor device can resist the invasion of the fire scene to all parts in the floor assembly for a long time, protects personnel or equipment in the vehicle from being influenced by the fire scene, ensures the performance of the floor assembly of the vehicle body without deformation under the high-temperature condition, has good fire resistance and fire resistance, and can be applied to the middle layer floors of the head vehicle and the trailer of a double-layer railway vehicle.

In another embodiment, as shown in fig. 3-4, when the flooring apparatus is applied to the subfloor of a double-deck railway vehicle, the floor panel assembly, the insulation 3, the floor beams 5 and the interior floor 4 are sequentially disposed from the bottom to the top; the ground beam 5 and the bottom plate assembly are welded and fixed, such as full-length welding. The bottom plate assembly is a concave bottom plate assembly, the ground beam 5 is a concave ground beam, the concave ground beam is correspondingly arranged above the concave bottom plate assembly, namely, a groove part of the concave ground beam is correspondingly arranged with a groove part of the concave bottom plate assembly, the heat insulation layer 3 is filled between the concave ground beam and the concave bottom plate assembly, and the ground beam 5 is laid above the heat insulation layer 3; the ground beam is welded and fixed with the 5 bottom plate assembly; in view of the laying structure of the floor beams 5, the floor device further includes:

an adjusting pad 18, the adjusting pad 18 is arranged between the upper surface of the ground beam 5 and the built-in floor 4 and is used for leveling the built-in floor 4; the adjustment pad 18 is a rubber or PVC or wood adjustment pad. The heat insulation layer 3 can be a rock wool heat insulation layer 3 with high density and high heat insulation.

Preferably, a wire groove 17 is arranged in the heat insulation layer 3, the wire groove 17 and the ground beam 5 are welded and fixed for installing the electric wire or cable 11, the contact of dissimilar metals can be separated through paint spraying, and preferably, a fireproof expansion plugging layer can also be filled in the wire groove 17 to further optimize the fireproof performance of the floor device.

On the basis of each embodiment, the heat insulation layer 3 is a rock wool heat insulation layer 3 or a glass wool heat insulation layer 3.

The application provides a rail vehicle, which comprises a vehicle body side wall, a cable 11 and the floor device of any one of the embodiments, wherein the side wall of an auxiliary supporting component 14 of the floor device is attached to the vehicle body side wall and is welded and fixed; a bottom plate component of the floor device is fixedly welded with the side wall of the vehicle body; the cable 11 passes the bottom plate subassembly, and the inside electric wire that is equipped with of cable 11 is equipped with the fire prevention inflation shutoff layer between electric wire and cable 11. Therefore, gaps and holes after the floor device is perforated, and hole gaps among the cables 11 and the electric wires are plugged, so that the fire-proof and fire-resistant integrity of the railway vehicle is improved.

Preferably, the rail vehicle is a double-deck rail vehicle, and the middle floor and the sub-floor of the double-deck rail vehicle are the floor device of any one of the above embodiments. Thereby further optimizing the fire-resistant performance of the two-layer floor of the double-layer rail vehicle.

While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.