动车组转向架簧间大质量部件(牵引电机)振动解耦技术方案

Vibration Decoupling Technology of the Massive Components(Traction Motor)between Springs in EMU Bogie

针对更高速度等级动车组转向架的簧间大质量部件(牵引电机)振动解耦技术进行了专题研究,分析了牵引电机的横向悬挂刚度和阻尼对转向架动力学性能的影响。结果表明,让牵引电机和构架在横向方向解耦到一定程度,即适当降低牵引电机的横向悬挂刚度和阻尼,可提高转向架的蛇行临界速度。为达到较高蛇行临界速度所需的横向悬挂刚度和阻尼,提出了一种高速转向架牵引电机横向解耦弹性架悬机构技术方案。该方案能将电机的横向悬挂刚度降低至0.34 MN/m,可实现电机与构架的横向低刚度解耦。

Vibration decoupling technology of the massive components （traction motor） between springs for the highcr speed electric multiple unit （EMU） bogie is studied, the influence of the lateral suspension stiffness and damping of traction motor on the bogie dynamic performance is analyzed. The result shows that the hunting speed can be in- creased by lowering the lateral stiffness and damping of traction motor. A lateral decoupled elastic suspension technical solution of traction motor for high-speed bogie is proposed, which could meet the requirements of a higher critical hunting speed. Thus, the lateral stiffness of the lateral decoupled elastic suspension mechanism could be lowed to 0. 34 MN/mm, thus to realize the low stiffness lateral decoupling between traction motor and bogie.