Study On The Integrality Driving System Scheme Of The Locomotive At 200km/h Speed

Since long-time ago, passenger locomotive speed-up is always the preferred way to increase the economic and social benefits. It is inexorable trend that the driving system develop to high speed and large power to meet the requirement of the locomotive.The international sophisticated drive units of the bogie have been analysed carefully. Combine the internal industry foundation, the integrality driving system scheme of the locomotive at 200km/h speed was determined. According to traction calculation of the train, the axle power of driving system and the model number of electric motor was determined. Thereby gaining the motion parameter and the dynamic parameter of driving system. Based on that the physical dimension of the driver gear and the transmission shaft was primarily designed, and the bearing designation was determined. The structural style that the hollow shaft was installed at the inner side of the gearbox was used in this paper. The motion anlysis and the rigidity anlysis of the hollow shaft was done. In addition, crown wheel draw bail was adopted in this driving system. It offers a solution to the problems of high speed bogie, such as the high rotative velocity of hollow shaft which endure large driving moment and large brake moment with small space for draw bail .At the same time, the key technic of the driving system was studied in this paper. The FEM software ANSYS was used to proceed analytical study on tooth contact strength, tooth flexural strength, mechanical strength of hollow shafting and bearing fitting allowance. The bearing arrangement manner of drive gear shaft on locomotive motor was studied. Its influence on bearing life and gear mesh was analysed from quantificational aspect. Discuss the effect of load distribution on contact state of the crown wheel. The modal analysis of the driving system was done by using rigid-body dynamics software SIMPACK.