受轴承选型限制影响,国内某出口2C0机车转向架中间轴只能选取较小自由横动量。为取得与原方案一致的动力学性能,采取减小中间轴一系横向刚度的方案解决。文章采用多体动力学软件SIMPACK对该机车进行动力学仿真计算,通过计算结果对机车稳定性进行分析,并对三种工况下机车曲线通过性能与原方案进行对比分析,优化选取中间轴一系横向刚度。这将为类似转向架设计提供参考。 Affected by the bearing selection restrictions, the domestic export 2C0 locomotive bogie axis can only choose a small free traversing. In order to obtain the kinetic performance consistent with the original plan, a solution to reduce the transverse stiffness of the first series of intermediate shafts is adopted. The article uses multi-body dynamics software SIMPACK to carry on the dynamic simulation calculation of the locomotive, and analyzes the locomotive stability through the calculation results. And compares and analyzes the locomotive curve passing performance and the original plan under the three conditions, Department of horizontal stiffness. This will provide a reference for similar bogie designs.