牵引变压器悬挂系统静刚度设计研究

Design Research of Suspension System Static Stiffness for Traction Transformer

针对车体与车下悬挂设备牵引变压器之间的隔振器刚度设计问题,对牵引变压器悬挂系统进行模型简化,得到关于牵引变压器的力和力矩平衡方程。同时再根据变压器隔振器6点共平面条件得到几何约束协调方程,得出了给定隔振器静挠度条件下设计隔振器刚度以及给定隔振器刚度条件下计算各个隔振器的静挠度的方法。对某动车牵引变压器静刚度进行实例设计。确定隔振器刚度工况,计算出了各工况下每个隔振器的静挠度值。考虑各个隔振器静挠度差,得到满足各个隔振器静挠度差均在1mm范围内对应的各个隔振器静刚度;考虑每个隔振器静挠度在6~7mm范围内的设计目标,得到各个隔振器的静刚度以及对应的静挠度。

Aiming at the stiffness design problem of rubber isolator between the carbody and the vehicle suspension devices of traction transformer,the force and moment balance equations of the traction transformer have been obtained based on a simplified force model of the transformer.Designing isolator stiffness method under the given condition of static deflection and calculating each isolator static deflection method under the given condition of isolator stiffness have been obtained according to geometry compatibility equations of 6points coplanar conditions.Static stiffness of an EMU traction transformer has been designed as an example.Isolator stiffness conditions are given and each isolator static deflection has been obtained.Each isolator static deflection difference is considered,to obtain the static stiffness of each isolator whose static deflection difference is in the range of 1mm.Considering the principle of each isolator static deflection in the range of 6~7mm,static stiffness and the corresponding static deflection of each isolator are obtained.