CN210526534U

CN210526534U - Floor structure adapting to American standard fire-proof requirement

Info

Publication number: CN210526534U
Application number: CN201921099161.5U
Authority: CN
Inventors: 奚大业; 胡金玉
Original assignee: CRRC Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2019-07-12
Filing date: 2019-07-12
Publication date: 2020-05-15
Anticipated expiration: 2029-07-12

Abstract

The utility model provides a floor structure that adapts to beautiful mark fire prevention requirement which characterized in that: the main body fireproof structure comprises floor cloth, a phenolic resin composite floor, carbon fiber cotton, ceramic fibers and a vehicle body from top to bottom in sequence, the ceramic fibers and the carbon fiber cotton are added into a cavity between the floor and a steel structure corrugated plate of the underframe from top to bottom, an electric through hole adopts a fireproof mud structure, fireproof paint is sprayed on a part of a region with a smaller interlayer space between the floor and the vehicle body, the interlayer space between the floor and the steel structure is very small, only a ceramic fiber fireproof material can be used, and fireproof paint is sprayed below the steel structure underframe corrugated plate to make up the defect that the heat insulation material in the region between the floor and the steel structure is less; the utility model discloses can satisfy the fire prevention requirement, can reach again and subtract heavy effect.

Description

Floor structure adapting to American standard fire-proof requirement

Technical Field

The utility model belongs to rail vehicle floor structure especially relates to a high fire behavior's that accords with beautiful mark requirement floor structure.

Background

As the manufacture of the Chinese subway enters the American market, the fire protection of the floor structure of the subway vehicle correspondingly adopts the American standard of fire protection. Due to the extreme importance on subway safety and the strict requirements on Chinese manufacturing, American owners have additional requirements on the basis of American standard fire prevention standards, including the requirements that a floor structure fire prevention sample piece is consistent with a real vehicle, the side surface of the floor structure sample piece is exposed in a fire source, the maintenance of electric cable through hole wiring is convenient, the fire-resistant time is increased, and the like. The American Standard ASTM E119 fire protection Standard itself is more demanding than other fire protection standards, such as the British Standard BS 6853. The owner has increased extra requirement to the American standard again, just so greatly increased floor structure fire prevention test degree of difficulty.

The problems of the original American standard floor structure are as follows:

1. the electric through hole is inconvenient to maintain; the floor structure has large unit area weight and large thickness; in the floor interlayer structure, the passenger room floor and the underframe steel structure are not wired; the floor structure has no or few through holes; the fire-proof structure sample piece of the floor is only exposed to the fire source at the bottom, and the side face of the fire-proof sample piece is not exposed to the fire source.

2. The floor structure fire-proof test sample piece is not strong enough to represent a whole train of vehicles; the fire-resistant time of the floor structure fire-resistant test sample piece is 15 minutes, and the fire-resistant requirement cannot be met.

Therefore, in order to meet the requirements of the U.S. owners and the subsequent projects for developing the U.S. market demands, the utility model of the fireproof floor structure which can meet the U.S. market demands is urgently needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rail vehicle floor structure that adapts to American standard requirement for electric through hole maintenance is maintained conveniently, floor structure unit area light in weight, and passenger room floor and chassis steel construction are walked the line among the floor sandwich structure, and a large amount of through holes of floor structure, floor fire resistive construction appearance bottom and side all expose in the fire source, and the fire-resistant time of floor structure fire resistive construction appearance is improved to 30 minutes by 15 minutes.

In order to realize the above utility model purpose, the utility model provides a floor structure that adapts to American standard fire prevention requirement, its characterized in that: the main part fire resistive construction from the top down is floor cloth in proper order, phenolic resin laminate flooring, carbon fiber cotton, ceramic fiber, the automobile body, cavity between floor and the chassis steel construction buckled plate and the space top-down between the supporting beam add ceramic fiber, carbon fiber cotton, the electric through hole adopts the fire prevention mud structure, the less regional local spraying fire prevention coating in intermediate layer space between floor and the automobile body, intermediate layer space is very little between floor and the steel construction, only can use ceramic fiber fire-proof material, for remedying the regional defect that thermal-insulated material is few between floor and the steel construction, it has the fire prevention lacquer to the spraying of steel construction chassis buckled plate below. Fixing the floor on the underframe steel structure through countersunk screws, and simultaneously bonding the floor and the underframe steel structure through elastic bonding glue; two floors are connected through screws, a through long supporting beam is arranged below the joint of the floors, and the supporting beam and the floors are adhered by elastic adhesive glue above and below the supporting beam.

And the bare wires pass through the through holes of the underframe steel structure, and the fireproof structures of the underframe steel structure electrical through holes and the electrical junction box below the underframe steel structure electrical through holes are required to be increased. Adopt fire prevention daub to cable through hole and carry out the shutoff to the gap between cable and the chassis steel construction through hole, adopt the better fire prevention inflation of mobility to glue simultaneously and carry out the shutoff to the gap that fire prevention daub can't reach, adopt the sealed stopper of gluing of fire prevention inflation between nylon hose and the chassis steel construction through hole, set up attach fitting in the below car position of nylon hose simultaneously, the inside foaming type fire prevention that scribbles of nylon hose is glued and is carried out the shutoff.

For the fireproof structure of the through hole of a small amount of cable sheath nylon hoses, the fireproof expansion sealant is adopted to plug the through hole between the nylon hose and the steel structure, meanwhile, a connecting joint is arranged below the nylon hose at the position below a vehicle, and the connecting joint is opened to coat and foam the fireproof glue inside the nylon hose to plug the through hole.

For a chassis steel structure that cannot be filled with thermal insulation material: if equipment is arranged below the floor and above the steel structure, no space is available or fireproof cotton is inconvenient to add. The upper surface and the lower surface of the steel plate with the underframe steel structure are sprayed with fireproof paint for fire prevention.

The floor and the underframe steel structure have a smaller interlayer space: the main body adopts the adjustment pad to support the floor, adopts 4mm thick ceramic fiber in the floor and the steel structure interlayer of the chassis, and simultaneously 6 below spraying fireproof paint of steel structure of the chassis.

The floor and the underframe steel structure have a smaller interlayer space: the main part adopts the adjustment pad to support the floor, adopts 4mm thick ceramic fiber in floor and steel construction intermediate layer, and chassis steel construction below spraying fire prevention lacquer simultaneously.

The utility model adopts the structure of floor cloth, aldehyde resin composite floor, carbon fiber cotton, ceramic fiber and stainless steel car body, the fixing mode mainly adopts elastic glue bonding, the thickness of the ceramic fiber is only 10mm, the fireproof requirement can be met just, and the weight reduction effect can be achieved; the electric through hole adopts a fireproof mud structure, so that the electric through hole is convenient to disassemble; fireproof paint is sprayed below the corrugated plate of the underframe, so that the defect of less heat insulation materials in the area is overcome; aiming at the floor area which can not be filled with the heat insulation material, a fireproof structure which is formed by spraying fireproof paint on the upper surface and the lower surface of a corrugated steel plate of the underframe steel structure is adopted; satisfy american owner's strict requirement, through fire prevention test verification, this kind of utility model floor structure can satisfy structure fire prevention 30 minutes.

Drawings

FIG. 1 is a sectional view of the main structure of the floor board of the present invention;

FIG. 2 is a schematic structural view of the fixing mode of the floor structure and the steel structure of the present invention;

FIG. 3 is a schematic view of the joint connection of the floor boards according to the present invention;

fig. 4 is a cross-sectional view of a through hole through which a bare electrical cable of the present invention passes;

FIG. 5 is a cross-sectional view of a through hole through which an electrical nylon hose of the present invention passes;

FIG. 6 is a cross-sectional view of a floor area that cannot be filled with insulation according to the present invention;

fig. 7 is a sectional view of a region with a smaller interlayer space between the floor and the steel structure of the present invention.

Detailed Description

Referring to fig. 1, the entire floor mainly has: floor cloth 1, floor 2, supporting beam 3, adjusting pad 4, elastic adhesive 5 and underframe steel structure 6. The carbon fiber cotton 7 and the ceramic fiber 8 with the thickness of 10mm are added from top to bottom in the cavity formed between the corrugated plates of the floor and the underframe steel structure 6 and the space between the supporting beams.

Referring to fig. 2, utility model the fixed mode of floor structure and steel construction: the floor 2 is fixed on the edge beam of the underframe steel structure 6 through a countersunk screw 9, and the floor 2 is bonded with the underframe steel structure 6 through elastic bonding glue 5.

Referring to fig. 3, utility model the floor and floor seam fixed mode: the two floor panels 2 are connected by means of screws 10. A support beam 3 is arranged below the floor joint in a full length mode, the support beam 3 and the floor 2 are bonded by elastic bonding glue 5 above the support beam 3, and the support beam 3 and a corrugated plate of a chassis steel structure 6 are bonded by the elastic bonding glue 5 below the support beam 3.

Referring to fig. 4, for a bare wire to pass through the underframe steel structure 6 through hole, the underframe steel structure 6 electrical through hole and the electrical junction box below the same both need an additional fireproof structure. Adopt fire prevention daub 11 to add the stifled gap between cable 13 and the chassis steel construction 6 through hole to the cable 13 through hole, to the gap that fire prevention daub 11 can't reach simultaneously, adopt the better fire prevention inflation glue 12 of mobility to add the stifled. The structure of adopting the fireproof daub has the advantages that the fireproof daub is easy to clear and convenient to maintain. For the electric junction box below the through hole of the underframe steel structure 6, the surfaces of the box body 17 and the box cover 14 are sprayed with fireproof paint 15, and rubber with excellent fireproof performance is adopted between the box body 17 and the box cover 14, so that the fireproof and sealing performance of the junction box can be ensured. This is suitable for a large number of bare wires to pass through the through holes of the underframe steel structure 6.

Referring to fig. 5, for the fire-proof structure of the through hole of the nylon hose sleeved outside a small amount of cables 13, the space between the nylon hose 18 and the through hole of the steel structure is blocked by adopting fire-proof expansion sealant 21, a connecting joint 20 is arranged below the nylon hose 18 at the lower position, and the connecting joint 20 is opened to block the interior of the nylon hose 18 by coating foaming type fire-proof adhesive 19. The foaming type fireproof glue 19 is characterized in that the foaming type fireproof glue is self-foamed after being coated and beaten at room temperature, and automatically blocks the gap between the cable 13 and the pipe wall in the nylon hose 18. The foaming fireproof glue 19 can automatically expand to block the fire source after meeting high temperature.

Referring to fig. 6, the underframe steel structure 6, which cannot be filled with heat insulating material: if equipment is arranged below the floor and above the steel structure, no space is available or fireproof cotton is inconvenient to add. At the moment, the upper surface and the lower surface of the steel plate of the underframe steel structure 6 are sprayed with fireproof paint 15 for fire prevention.

Referring to fig. 7, the area with a relatively small interlayer space between the floor 2 and the underframe steel structure 6: the main body adopts adjusting pad 4 to support floor 2, adopts 4mm thick ceramic fibre 22 in floor and 6 interlayers of chassis steel construction, and the spraying fireproof paint 15 of chassis steel construction 6 below simultaneously.

Claims

1. The utility model provides a floor structure that adapts to beautiful mark fire prevention requirement which characterized in that: the main part fire resistive construction from the top down is floor cloth, floor, carbon fiber cotton, ceramic fiber in proper order, and the space top-down between the cavity that forms between floor and the chassis steel construction buckled plate and the supporting beam adds carbon fiber cotton and ceramic fiber, and the floor is fixed on chassis steel construction boundary beam, bonds floor and chassis steel construction through elastic bonding glue simultaneously, floor and floor seam below have logical long supporting beam, bond supporting beam and floor with elastic bonding glue in supporting beam's top, bond supporting beam and chassis steel construction buckled plate with elastic bonding glue in supporting beam's below, intermediate layer space spraying fire prevention coating between floor and the automobile body, spraying has the fire prevention lacquer in chassis steel construction buckled plate below.

2. A flooring structure adapted to meet the fire protection requirements of the united states standard as claimed in claim 1, wherein: gaps in cable through holes of the underframe steel structure, which are passed through in a bare wire mode, are plugged by adopting fireproof daub and fireproof expansion glue.

3. A flooring structure adapted to meet the fire protection requirements of the united states standard as claimed in claim 1, wherein: fireproof paint is sprayed on the surfaces of a box body and a box cover of the electric junction box below the through hole of the underframe steel structure, and fireproof rubber is adopted between the box body and the box cover.

4. A flooring structure adapted to meet the fire protection requirements of the united states standard as claimed in claim 1, wherein: the gap in the cable through hole of the chassis steel structure that the overcoat nylon hose mode passes through adopts the sealed stopper of gluing of fire prevention inflation, and the below car position below the nylon hose sets up attach fitting, opens attach fitting and scribbles the foaming type fire prevention and glues the shutoff to nylon hose inside.

5. A flooring structure adapted to meet the fire protection requirements of the united states standard as claimed in claim 1, wherein: and fireproof paint is sprayed on the upper surface and the lower surface of the steel plate of the underframe steel structure.

6. A flooring structure adapted to meet the fire protection requirements of the united states standard as claimed in claim 1, wherein: the floor is supported by the adjusting pad, ceramic fiber with the thickness of 4mm is adopted in an interlayer of the floor and the underframe steel structure, and fireproof paint is sprayed below the underframe steel structure.