Wheel slip dump valve for railway braking system

2017 2nd International Seminar on Advances in Materials Science and Engineering

Zhang, Xuan^1 ; Zhang, Lihao^1 ; Li, Qingxuan^1 ; Shi, Yantao^1

SORL Auto Parts Inc., Wenzhou

325200, China^1

关键词: Braking distance;    Occurrence probability;    Passenger vehicles;    Pneumatic braking;    Railway braking;    Railway vehicles;    Sticking coefficients;    Vehicle service;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/231/1/012158/pdf
DOI  :  10.1088/1757-899X/231/1/012158

来源: IOP

【 摘 要 】

As we all know, pneumatic braking system plays an important role in the safety of the whole vehicle. In the anti slip braking system, the pressure of braking cylinder can be adjusted by the quick power response of wheel slip dump valve, so that the lock situation won't occur during vehicle service. During the braking of railway vehicles, the braking force provided by braking disc reduces vehicle's speed. But the locking slip will happen due to the oversize of braking force or the reduction of sticking coefficient between wheel and rail. It will cause not only the decline of braking performance but also the increase of braking distance. In the meanwhile, it will scratch the wheel and influence the stable running of vehicles. Now, the speed of passenger vehicle has been increased. In order to shorten the braking distance as far as possible, sticking stickiness must be fully applied. So the occurrence probability of wheel slip is increased.