采煤机截割部摇臂齿轮传动系统动力学响应分析

Dynamic Response Analysis of the Transmission System of the Cutting Part of Shearer

采煤机截割部传动系统实际工况时很容易受到瞬时冲击力,从而产生剧烈振动,加速其薄弱环节的疲劳损伤破坏。现有研究仅以空载或均匀载荷下分析其动力学响应,没有考虑实际工况外部激励载荷以及非线性轴承刚度对齿轮传动系统动力学性能的影响。本文运用LS-DYNA软件对实际工况下的采煤机截割部外部激励载荷进行仿真模拟,同时建立基于ADAMS的截割部齿轮传动系统刚柔耦合动力学模型。考虑截割部重载零部件的柔性效应、齿轮的啮合时变刚度、综合啮合误差、滚动轴承变刚度等因素,对实际工况下截割部齿轮传动系统各齿轮副的动态啮合力和各支撑轴的动态接触力进行分析,得到其在实际工况下的动力学响应。

the actual working condition of the transmission system of the coal mining machine cutting part is easy to be subjected to the instantaneous impact force, thus resulting in violent vibration, and the fatigue damage of the weak link is accelerated. In the present study, the dynamic response of the gear transmission system is not considered in the condition of load or uniform load, without considering the external excitation load and the nonlinear bearing stiffness. Using LS-DYNA software under the actual working conditions of shearer cutting of external excitation load simulation, at the same time based on ADAMS cut cutting department of gear transmission system rigid flexible coupling dynamic model. Consider the cut cut the flexible effect of the heavy parts, gear variable stiffness, gear error and rolling bearing stiffness and other factors, to the actual working conditions under section cut gear transmission system of each gear pair of dynamic meshing force and the support shafts and the dynamic contact force analysis and its dynamics in the actual operating conditions of the response.