Device for maintaining adhesion coefficient of wheel rail

Abstract

The invention discloses a device for maintaining adhesion coefficient of a wheel rail. The device at least comprises a bogie flashing board, a motor, a rotating shaft, a disk brush, an air knife, an air duct, an electric heating device, a fan, a lifting platform and a transmission device, wherein the bogie flashing board is mounted on the outer side of a motor car bogie wheel set; and the rest equipment is mounted in an equipment cabin above a power shaft. When in rainy, snowy, frost and heavy fog and wet days or when attachments such as floating dust, oil contamination and leaves are on a rail surface, a control system controls the transmission device so that the disk brush and the air knife drop to the rail surface from the equipment cabin; and the motor drives the disk brush on the rotating shaft to rotate at high speed, the leaves, the oil contamination, accumulated water, accumulated snow and other attachments on the rail surface are removed from the rail surface, high-pressure air generated by the fan is sprayed out from the air knife at high speed, residual water is blow-dried instantly, so that the rail surface is always in a dry state, stable adhesion coefficient between wheel rails is ensured, and a high-speed train can safely and stably run at high speed around the clock.

Description

technical field [0001] The invention belongs to the technical field of high-speed train power, and in particular relates to a device for maintaining the wheel-rail adhesion coefficient. Background technique [0002] When a locomotive or motor vehicle pulls a train, the force acting on the rail by the moving wheel can only be equal to but not greater than the adhesion force under any circumstances, otherwise the moving wheel will idle on the rail, causing the traction or braking force of the locomotive to drop sharply or even disappear. A train climbing a slope or a train braking is very dangerous. The relationship between the wheel load P and the adhesive traction force F is as follows: F=P·μ. [0003] In the formula, μ is the adhesion coefficient, which is the static friction coefficient at the contact point between the locomotive wheel and the rail. The driving wheel load of a certain type of locomotive is a fixed value. After the driving wheel load of the locomotive is ...

AI Technical Summary

Problems solved by technology

[0004] Sprinkle small particles of dry sand between the moving wheel and the rail, which can increase the friction and improve the adhesion coefficient; in the case of water medium, sand can increase the wheel-rail adhesion coefficient by 35-65%; but with the increase of speed, the water medium The viscosity-increasing effect of sanding under working conditions becomes worse

In addition, the coefficient of adhesion decreases significantly with the increase of train speed

[0005] If there are oil stains, leaves and other attachments on the rail surface or in rainy and snowy weather, the train will have to slow down and run, which will seriously affect the operating efficiency of the high-speed rail. Although sand is generally used to increase friction, the effect is limited. Moreover, the long-term use of sanding measures will accelerate the damage of the wheel set and the rail surface, pollute the track, and increase the workload of track cleaning

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