Double-layer wind resistance braking device, double-layer cab structure and high-speed train

Abstract

The invention discloses a double-layer wind resistance braking device, a double-layer cab structure and a high-speed train. The double-layer wind resistance braking device comprises an outer-layer wind resistance braking plate and an inner-layer wind resistance braking plate which are installed in a variable cross-section area of the train, the outer-layer wind resistance braking plate comprises aplurality of outer-layer braking unit plates which are transversely arranged along the outer contour of the variable cross-section area, the inner-layer wind resistance braking plate comprises a plurality of inner-layer braking unit plates which are transversely arranged along the outer contour of the variable cross-section area, an opening and closing driving mechanism is installed on a high-speed train cab, and when the outer-layer wind resistance braking plate and the inner-layer wind resistance braking plate are opened, the inner-layer braking unit plates are located on the inner side ofthe outer-layer braking unit plate and located in gaps between adjacent outer-layer braking unit plates. The double-layer wind resistance braking device, the double-layer cab structure and the high-speed train are simple in structure, convenient to install and high in reliability, the requirement of the high-speed train for braking force in the emergency braking state can be met, and the problem that the braking force is insufficient when the high-speed train is braked emergently is solved.

Description

technical field [0001] The invention relates to the technical field of rail transit equipment, in particular to a double-layer wind resistance braking device, a double-layer driver's cab structure and a high-speed train. Background technique [0002] When the speed of traditional trains in my country is 120km / h, the air resistance accounts for about 40% of the total resistance; for the speed-up train composed of blunt locomotives pulling speed-up passenger cars (the bottom of the vehicle is exposed), when the speed is 160km / h, the air resistance accounts for about 75% of the total resistance; At 300km / h, air resistance accounts for about 85% of the total resistance. The air resistance of the train is proportional to the square of the train speed. With the increase of the train speed, the air resistance of the train increases rapidly, and the proportion of the air resistance of the train in the total resistance is also increasing. [0003] When the running speed of the high-s...

AI Technical Summary

Problems solved by technology

Traditional train braking methods rely on tread braking, disc braking or regenerative braking depending on the adhesion between the wheels and rails. As the speed of high-speed trains increases, the braking distance will be greatly extended when the train is braking at a speed of 350km / h. The train cannot stop within the traditional braking distance of 350km / h.

[0004] Traditional braking forms can no longer meet the braking needs of high-speed trains under emergency conditions such as earthquakes or train collisions

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