The thesis introduces the liquid system of light flame proof rubber tyre and the work principle and structure constitute of its pivotal equip dint machine,and makes simple introducetion of the function and right operation methods of braked fluid,according to the usage circumstance of the vehicle,then puts forward the opinions on how to improve the system.

Described are the structure features of wheels,axles and brake discs on the high speed light wheelsets for PW 200 type bogies,the model selection of the high speed light bearings as well as the results of tests for cars with light wheelsets on the rolling,vibration test stands and normal line.

This paper mainly research on the feasibility technique of high speed fan-type light wheel coal grinding machine in boiler powder manufacturing system which applied in power plant used brown coal.