本文着重叙述电机全悬挂于转向架构架上对构架强度的要求,构架强度取决于设计结构、受力状况、使用材料的性能等。为确保运用20～25年的使用寿命(国际上电动转向架一般使用年限)则需按疲劳强度来考虑,以此着重分析结构设计中所存在的问题,并结合国内外经验改进疲劳结构的设计。 This article focuses on the full suspension of the motor on the bogie frame on the frame strength requirements, the strength of the frame depends on the design structure, the force status, the performance of the use of materials. In order to ensure the service life of 20-25 years (the service life of electric bogies in the world), it is necessary to consider the fatigue strength so as to analyze the problems existing in structural design and to improve the design of fatigue structure based on domestic and foreign experience .