系统地分析了高速轮对双空心轴式动力车转向架驱动制动单元的组成、结构特点及悬挂方式,对转向架运行过程中单元的运动情况作了详细的计算分析,证明了这种新型驱动方式在实现牵引电机体悬的同时,能够满足高速动力车转向架运动关系的要求.“,”The composition, structure characteristics and suspension pattern of a driving braking unit system used in high speed power bogie with double hollow axles is analyzed in this paper. During the process of motion, the relative movement between the unit and its adjacent components is analyzed and calculated in detail. It is proved that this new type of driving braking system can satisfy the kinematical requirements of the high speed power bogies, with the body suspension of the driving motor being achieved.