Sand-proof railway vehicle

Abstract

The invention relates to a sand-proof railway vehicle. The sand-proof railway vehicle comprises a vehicle body, a bogie, a device chamber and an air conditioning ventilating system; the vehicle body comprises an end wall, a side wall, a roof and a bottom frame; a coating structure of the sidewall comprises a primer layer, a putty layer, a medium painting layer, a finishing paint layer and a varnish layer; the coating structure of the roof comprises a primer layer, a medium painting layer, a finishing paint layer and a varnish layer; the coating structure of the bottom frame comprises a primer layer and a finishing paint layer. According to the sand-proof railway vehicle, high-flexibility coatings form an elastic coating system for the vehicle body, so that the sand-proof railway vehicle is outstanding in outer surface wear resistance, remarkable in ageing resistance, and high in interlayer attaching force and cold resistance; the external stand impact force can be buffered under the recoverable deformation effect of the system, and therefore, the railway vehicle is adapted to the high-sand regional environment and can also be applied to operation in a high cold and high ultraviolet regions.

Description

technical field [0001] The invention relates to a rail vehicle, in particular to an anti-wind and sand rail vehicle suitable for operating in a high wind and sand area, and belongs to the technical field of rail vehicle manufacturing. Background technique [0002] Existing car body coating systems for rail vehicles such as EMUs include side wall removal, roof coating, underframe and bogie coating, wherein end side wall coating generally includes primer, putty, intermediate coating Paint and topcoat, the thickness of each layer is about 60μm, 3mm, 40μm and 60μm; roof coating generally includes primer, asphalt paint and topcoat, the thickness of each layer is about 60μm, 3mm and 60μm; chassis coating Including primer, asphalt paint and topcoat, the thickness of each layer is about 60μm, 3mm and 60μm; the bogie coating includes primer and topcoat, and the thickness of each layer is 60μm. [0003] The applicable ambient temperature of existing EMUs and other rail vehicles is +4...

AI Technical Summary

Problems solved by technology

[0003] The applicable ambient temperature of existing EMUs and other rail vehicles is +40°C to -25°C, and when the vehicle is operating at high speed, the damage to the outer surface of the car body will be multiplied by the wind shear force and the collision force of sand and stones, especially in the In areas with high wind and sand, the above coating systems cannot meet the requirements of wind and sand protection in terms of flexibility, wear resistance, aging resistance and interlayer adhesion.

[0004] In addition, if the rail vehicle is operated in an extremely cold environment of -40°C, ice and snow will accumulate on the surface of the bogie axle box, traction motor, frame and other components. At the same time, under low temperature conditions, the flexibility of the material itself will decrease and the brittleness will increase. The vehicle exterior surface coating system will be tested by the recoverable deformation in the process of entering and exiting the tunnel.

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