Superconduction eddy-current brake device of track multiple unit

Abstract

The invention provides a superconducting eddy-current braking device for a rail motor car, which comprises a braking controller with an excitation power supply and an eddy-current braking device, wherein an iron core column of an electromagnet of the eddy-current braking device adopts an iron core column of a superconducting electromagnet, a coil of the superconducting electromagnet is connected with the excitation power supply, the iron core column of the superconducting electromagnet is arranged on a steering frame of a carriage, and an air gap is reserved between the bottom plane of the iron core column of the superconducting electromagnet and the upper surfaces of steel rails of a rail. The superconducting eddy-current braking device for the rail motor car has the advantages that the eddy-current braking is non-contact electromagnetic braking, a superconducting electromagnetic system is adopted, the electric resistance of the coil approaches to zero, and the large current can be conducted into the coil, so the produced magnetic-field intensity is also large, and the produced electromagnetic force of eddy-current braking is also large. Compared with the prior art, the device has the advantages of small volume, light weight, and small consumption of electric energy, greatly improves the reliability and the service life, and can be widely applied to eddy-current braking technology of rail motor cars (such as trains, subways, city trains, tram cars and so on).

Description

technical field [0001] The invention relates to a brake device, in particular to a superconducting eddy current brake device for a rail vehicle. Background technique [0002] Most of the traditional rail train brakes use train foundation braking, resistance braking and regenerative braking. These braking methods ultimately rely on the adhesion between the wheel rim and the rail, that is, friction to achieve braking. Friction braking inevitably involves sliding between the wheel rails and other braking components, causing heat and wear. This inevitably requires frequent inspection and replacement of worn brake parts, which increases the input of manpower and material resources, thereby increasing the operating cost. These defects are then more prominent for high-speed rail motor vehicles (such as: trains, subways, urban railways, trams, etc.). [0003] After the 1980s, Germany, France, and Japan successively began to use the eddy current generated by electromagnets on the ...

AI Technical Summary

Problems solved by technology

However, increasing the magnetic field strength will make the volume of the eddy current braking device larger and larger, which is difficult to realize on the motor vehicle.

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