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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

Active Publication Date: 2020-07-07
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution is only suitable for removing rainwater and snowwater to increase the wheel-rail adhesion, and cannot be applied to braking and deceleration under normal conditions, and does not have universal applicability

Method used

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  • A system for improving wheel-rail adhesion of trains
  • A system for improving wheel-rail adhesion of trains
  • A system for improving wheel-rail adhesion of trains

Examples

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Effect test

Embodiment

[0032] The system for improving the wheel-rail adhesion of trains includes a control device 1, an excitation power supply 2, a wheel tread electromagnetic device 3 and a pneumatic propulsion device 4, see figure 1 , the wheel tread electromagnetic device 3 is non-contact suspended on both sides of the train wheel tread, the control device 1 includes an electronically controlled pneumatic device 11 and a microcomputer controller 12, see figure 2 , the excitation power supply 2 includes a power unit 21 and a regulator 22 connected to each other, see image 3 , the power unit 21 is a rectifier, the regulator 22 is used to adjust the size of the output excitation current, the wheel tread electromagnetic device 3 includes a cast iron friction block 31, a coil core 32, a yoke 33, an electromagnetic Iron bracket 34, junction box 35 and connecting plate 36, refer to Figure 4 One side of the electromagnet holder 34 is connected with a yoke 33, a coil iron core 32 and an iron frictio...

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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.

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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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B61C15/00B61C15/04
CPCB61C15/00B61C15/04
Inventor 应之丁陈家敏樊嘉慧梁晖
Owner TONGJI UNIV
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