东风8B内燃机车径向转向架耦合连杆直线工况受力分析

摘要

利用东风8B内燃机车径向转向架的力学简化模型,推导出径向机构中耦合连杆的受力计算公式.通过动力学软件SIMPACK仿真分析以及实车试验,得出列车在直线轨道以不同速度工况行驶时,转向架耦合连杆载荷的仿真结果和试验数据.将理论值、仿真结果与试验数据三者进行对比,验证了理论推导的准确性.通过对耦合连杆受力计算公式的分析,总结了耦合连杆在直线工况下受力的影响因素,为径向转向架的运用和推广奠定了理论基础.%Through the simplified mechanical model of DF8B diesel locomotive radial bogie,the formula of coupling rod's loads can be deduced.In the straight track condition with different train speed,the result of simulation and test can be got respectively by the simulator software SIMPACK and real vehicle test.Through contrasting the theoretical value,simulated value and test value of the loads of the coupling rod of the bogie,the accuracy of theoretical derivation has be verified.With the conclusion of the analysis,the factors affecting the coupling rod' s loads in the straight condition are founded and the result provides a theoretical basis to the radial bogie further improve.