A system for improving wheel-rail adhesion of trains

A technology of adhesion and train wheels, applied to locomotives and other directions, can solve problems such as inapplicability, inapplicability of braking deceleration, and increase of wheel-rail adhesion
CN109501817BActive Publication Date: 2020-07-07TONGJI UNIV
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Patent Information

Authority / Receiving Office
CN ¡ China
Patent Type
Patents(China)
Current Assignee / Owner
TONGJI UNIV
Publication Date
2020-07-07

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Abstract

The invention relates to a system for improving the adhesion force of a train wheel rail. The system comprises a control device (1), an excitation power supply (2), a wheel tread electromagnetic device (3) and a pneumatic pushing device (4); when a train is subjected to traction or braking, the control device (1) controls pressure air to be input into the pneumatic pushing device (4) and the wheeltread electromagnetic device (3) is pushed to get close to a wheel tread; meanwhile, an instruction is sent to the excitation power supply (2) and needed excitation current is output to the wheel tread electromagnetic device (3) to form a magnetic field nearby the rotary train wheel tread; an eddy flow is generated on the tread and an adsorption force on a steel rail is generated; meanwhile, thesurface of the train wheel tread is magnetized; meanwhile, the adsorption force on the steel rail tread is increased through the train wheel tread; the effect of increasing the adsorption force on a train wheel is realized under the condition of an adhesion coefficient between the wheel rails. Compared with the prior art, the system provided by the invention has the advantages that the system is convenient to mount, the adhesion force of the wheel rail is remarkably improved, damages to the steel rail and the wheel are not caused and the like.
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Description

technical field

[0001] The invention relates to a train braking or traction device, in particular to a system for improving the wheel-rail adhesion of a train. Background technique

[0002] Since the speed of high-speed trains is higher than that of ordinary trains, the braking or traction of high-speed trains consumes more kinetic energy than ordinary trains, and also requires greater braking or traction. The operation of the train is realized by traction and braking adhesion friction generated by the interaction between the wheel and the rail. The adhesion coefficient and adhesion between the wheel and rail at high speeds are greatly reduced. The friction between the wheels will also be reduced, and it is very easy to cause the wheels to spin and slip. Once skidding occurs, the wheel treads will be scratched and the braking or traction distance of the train will be prolonged, which will endanger the driving safety. Therefore, measures need to be taken to improve the adhes...

Claims

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