Floor structure of railway vehicle

Abstract

The invention relates to a floor structure of a railway vehicle. The floor structure comprises a vehicle body chassis structure, floor cloth, heat insulation materials and metal sheets. The floor cloth is laid on the upper surface of the vehicle body chassis structure, the heat insulation materials are arranged on the lower layer of the vehicle body chassis structure, the metal sheets are laid on the lower surfaces of the heat insulation materials and the metal sheets are fixedly connected with the vehicle body chassis structure. The floor structure of the railway vehicle is simple in overall structure and low in weight, the heat insulation materials and the stainless steel metal sheets are laid on the lower portion of the chassis structure, the metal sheet on the bottommost layer is used for directly confront flames during a fire disaster, the high melting point performance of stainless steel is fully utilized for delaying collapse of a vehicle body structure, so that the vehicle body structure is effectively protected, and the floor structure is more beneficial to a low-melting-point aluminum alloy vehicle body.

Description

technical field [0001] The invention relates to a floor, in particular to a floor structure with a fireproof function used on rail vehicles such as urban rails, and belongs to the technical field of rail vehicles. Background technique [0002] Such as figure 1 and figure 2 As shown, the conventional practice for the floor structure of rail vehicles is to lay heat and sound insulation materials on the upper layer of the underframe structure of the car body (that is, the inside of the passenger compartment), and then lay the anti-slip and flame-retardant floor cloth for the interior. [0003] figure 1 The one shown is a ceramsite sand structure. A heat insulating material 3 is arranged above the vehicle body chassis structure 1, and a layer of floor cloth 2 is laid on the top of the heat insulating material 3. In this structure, the heat insulating material 3 is made of ceramsite sand. figure 2 Shown is a suspended floor structure, a heat insulating material 3 is set abov...

AI Technical Summary

Problems solved by technology

The burning time of the flame retardant test shall not be less than the time required to evacuate passengers from the vehicle (the nominal test time shall not be less than 15 minutes). Considering the matching with the evacuation capacity of the train, it is recommended that the fire barrier standard shall be at least 45 minutes. The floor structure is no longer suitable for urban rail vehicles with modern high-standard fire protection requirements

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