LK500型顶驱传动系统的动态特性分析

为了更好地解决顶驱装置传动系统在特殊工况下运行不平稳的问题,以LK500型顶驱为研究对象,对其传动系统的实时动态特性进行分析.建立传动系统的三维模型及齿轮轴大齿轮的有限元模型,借助Ansys-Workbench分析软件对齿轮轴大齿轮进行模态分析及谐响应分析,应用ADAMS分析了齿轮轴柔性对齿轮副啮合力、啮合误差的影响.结果表明:要使传动系统能够更加平稳运行,避免发生共振,系统激励的频率应尽量避开齿轮的固有频率;齿轮轴为柔性轴时对轮齿间的啮合力影响较小,啮合误差较大,使系统产生振动,影响运行平稳性.仿真结果为研究顶驱齿轮传动系统的动态性能及优化设计提供了参考.

Analysis of dynamic characteristics of top drive system

In order to solve well the problem of instable operation drive system in top drive device under special working condition, an LK500-type top drive is taken as research object to analyze the real-time dynamic characteristics of its drive system. A three-dimensional model of the transmission system and a finite element model of the major gear wheel on gear shaft are established, the modal analysis and harmonic response analysis of the major gear wheel on gear shaft is carried out with the help of analysis software Ansys-Workbench, and the influence of the flexibility of gear shaft on meshing force and meshing error of the gear pairs is analyzed by using ADAMS. The results show that the excitation frequency of the system should be as far as posible from the inherent frequency of the gears to make the operation of the drive system even more smooth. However, when the gear shaft is a flexible one, its influence on meshing force between gears will less and meshing error greater, so that making the system to vibrate and having influence on the smoothness of the system operation. The simulation result will provide reference for studying the dynamic performance and optimal design of the top drive gear transmission system.