Linear permanent magnetic rail brake

Abstract

The invention discloses a linear permanent magnetic rail brake. A permanent magnetic shaft in the same direction with a pole shoe is arranged between two side plates; a permanet magnet is fixedly sleeved on a permanent magnetic shaft; the permanent magnet is a shaft body composed of two half cylinders with different radiuses; a semi-arc separating plate is fixedly sticked on the surface of the half cylinder with the smaller radius; the semi-arc separating plate is combined with the permanent magnet to form a cylinder; an U-shaped permanent magnet is arranged between the semi-arc separating plate and each side plate; an U-shaped fixing slot is arranged between the half cylinder with the larger radius of the permanent magnet and each side plate; and the S pole or N pole of the U-shaped permanent magnet is arranged corresponding to the N pole or S pole of the permanent magnet. The braking power is controlled through controlling the rotating angle of the permanent magnet shaft, so that the vortex and friction braking manners are realized; the braking distance is reduced; and the braking effect is good.

Description

technical field [0001] The invention relates to a magnetic track brake of a railway train vehicle, which realizes the braking or release of the railway train vehicle through the closing or separation between the magnetic field and the track. Background technique [0002] At present, disc brakes are commonly used on railway passenger vehicles. Although the degree of thermal damage is lower than that of tread brakes, when the train is running at high speed or quasi-high speed, the braking distance must be extended to achieve safety due to the limitation of adhesion conditions. brake. However, if a magnetic rail brake is added to the rail vehicle on the basis of the original braking method, the braking force can be increased, the braking distance can be shortened, and the driving safety of the high-speed rail vehicle can be greatly guaranteed. Magnetic track braking is a new type of braking method developed as the speed of rail vehicles continues to increase. It includes two f...

AI Technical Summary

Problems solved by technology

The disadvantages of the structure and working method of this kind of permanent magnet rail brake are that the braking force is not easy to control, and the friction is serious at high speed, so that the temperature of the brake is too high, and the permanent magnet is prone to demagnetization; Clearance to track reduces braking effect

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