摘要
采煤机摇臂传动系统是决定采煤机工作效率的关键因素。针对采煤机摇臂壳体与各轴、各轴上轴承滚动体与其内外圈实时接触力难预测的问题,文中参照MG7180型采煤机摇臂建立了以摇臂壳体、各轴、液压缸缸筒为柔性体的采煤机摇臂传动系统刚柔耦合模型。以RecurDyn软件为仿真平台施加边界条件和负载进行动力学仿真,得出传动系统中各轴与采煤机摇臂壳体的接触力、接触压力及各齿轮间啮合力曲线,生成摇臂壳体位移应力云图且对各轴孔中心点位移变化值进行统计,并在此基础上对摇臂壳体进行结构改进。文中研究为采煤机摇臂传动系统的优化设计与疲劳寿命分析提供新思路和数据参考。
The transmission system of shearer’s ranging arm serves as a key factor for the shearer’s efficiency. Since it is difficult to predict the real-time contact force between the shear’s ranging arm and each shaft,and between the bearing rollers on each shaft and their inner and outer rings,in this article,the rigid-flexible coupling model is set up based on the MG7180 shear’s ranging arm,with the flexible characteristics of ranging arm,each shaft and hydraulic cylinder. With the boundary conditions and load imposed on the simulation platform,the dynamics simulation is carried out with the aid of RecurDyn software.The contact force and contact stress between the shear’s ranging arm and each shaft,and the curves of gear’s meshing force are obtained. Besides,both the ranging arm’s displacement and stress nephogram and the statistics of changing displacement values of the center point of each shaft hole are summarized,and based on this,the body’s structure is improved. It provides new ideas and data reference for the optimization design and fatigue-life analysis of the transmission system of shearer’s ranging arm.
作者
毛君
刘晓宁
陈洪月
MAO Jun;LIU Xiao-ning;CHEN Hong-yue(School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000;High-end Fully-mechanized Equipment Dynamic Test and Data Analysis Center,National Coal Association,Fuxin 123000;Mine Hydraulic Technology and Equipment of the National Engineering Research Center,Fuxin 123000)
出处
《机械设计》
CSCD
北大核心
2019年第1期58-66,共9页
Journal of Machine Design
基金
国家能源研发(实验)中心重大资助项目(2010_215)
关键词
摇臂壳体
刚柔耦合
接触力
壳体改进
ranging arm
rigid-flexible coupling
contact force
body improvement
