采煤机截割部行星传动齿轮啮合动力学仿真

为了分析采煤机截割部行星传动机构齿轮啮合动载系数的影响,利用Pro/E建立了某采煤机截割部两级行星传动机构的三维实体模型,导入到LMS Virtual.Lab Motion模块中,分别进行了有无润滑油影响两种情况下重合度引起的时变啮合刚度动力学仿真。结果表明,不考虑润滑油影响时,高速级外、内啮合的动载系数分别为1.045和1.003,低速级外、内啮合的动载系数分别为1.024和1.014;采煤机截割部行星传动处于低速、重载运行状态,润滑油对其动态动载系数影响相对较小,对于220号和320号齿轮油,高速级外、内啮合的动载系数分别增加了1.53%～2.58%和3.79%～4.19%;低速级外、内啮合的动载系数分别增加了0.88%～1.37%和1.68%～1.97%。

Dynamic simulation of planetary transmission gear meshing for cutting part of coal mining machine

Aimed at analyzing the effect of dynamic load coefficient of gear meshing in planetary transmission mechanism for cutting part of coal mining machine, this paper describes the use of Pro/E to develop 3D solid model of certain two-stage planetary transmission for cutting part of coal mining machine introduced into LMS Virtual Lab Motion module, and the dynamic simulation of time-varying meshing stiffness caused by coincidence degree with or without oil film. The results show that the absence of the effect of lubricating oil means a dynamic load coefficient of the high level outer and inner meshing of 1. 045 and 1. 003 respectively and a dynamic load coefficient of the low level outer and inner meshing of 1. 024 and 1. 014 respectively. Planetary transmission mechanism for cutting part of coal mining machine stays in low speed and high load running state, with relatively little effect of oil film on dynamic load co- efficient; dynamic load coefficient of the high level outer and inner meshing sho, ss 1.53% 0 2.58% and 3.79% -4.19% increases respectively for No. 220 and No. 320 gear oil; dynamic load coefficient of the low level outer and inner meshing shows 0.88% - 1.37% and 1.68% - 1.97% increases respectively.