轮对空心轴双级六连杆传动系统刚度分析研究

Stiffness Research of Wheelset Hollow Shaft Drive System with Two-stage Six-link Mechanism

轮对空心轴双级六连杆装置作为准高速铁路机车架悬式转向架驱动装置的传动机构,其各向刚度的大小对整车动力学性能有着重要影响。用经典力学方法对轮对空心轴传动机构各典型工况进行了运动关系和受力分析,推导出了传动机构各向刚度的计算公式。结合1个铁路机车转向架驱动系统实例,分别用推导的刚度公式和SIMPACK动力学仿真软件进行了各向刚度分析计算,2种方法所得到的结果差异很小,验证了刚度计算公式的准确性,表明所推导出的刚度公式可用于同类传动机构各向刚度的计算。

Stiffness characteristic of wheel-set quill transmission mechanism with two stage six-link device,used on frame suspended motor driving unit for quasi high speed locomotive,has significant effect on vehicle dynamic performance.Based the analysis of the movement and forces in the typical working conditions of the wheel-set hollow shaft transmission mechanism with classical mechanics method,some calculation formulas of the transmission mechanism are derived.On an example of a railway locomotive bogie drive system,the stiffness calculation formulas and SIMPACK dynamic simulation analysis software are respectively used to analyze and calculate the stiffness in each direction.The difference of stiffness results obtained by two methods is very small,which verifies the accuracy of the stiffness calculation formulas and shows that the formulas can be used for stiffness calculation of the same kind of transmission mechanism.