摘要
采煤机工作环境复杂、恶劣,振动情况严重,导致采煤机工作可靠性和使用寿命降低。通过建立煤岩截割试验台,采集采煤机割煤状态下的实验数据,进行分析处理,利用Pro/Enginer建立采煤机壳体的三维模型,通过有限元软件ANSYS对壳体进行柔性化处理,利用ADAMS/Vibration模块对壳体进行自由振动和受迫振动特性分析。研究结果表明:引发壳体振动的主要原因为系统第二阶模态容易被外载荷激发,提出增大支撑耳处圆弧半径,增大调高油缸系统刚度的方法减小振动,为截割部结构的改进优化提供依据。
The shearer has intense vibration under poor working conditions,resulting in the deduction of the reliability and service life of the shearer.It collects and deals with the experimental data about load under working conditions by cutting testbed for coal and rock,building the 3D model of shearer cutting unit by Pro/Enginer,taking flexible processing about shearer cutting unit by ANSYS,and operating the vibration analysis by ADAMS/Vibration.The results of research indicate the main reason of causing vibration is that 2 order system mode is easily excited,proposing methods of increasing arc radius of supporting lug and improving stiffness of hydraulic cylinder to reduce the vibration,providing the reference for the structure improvement and optimization of the cutting unit.
出处
《机械设计与制造》
北大核心
2013年第8期14-17,共4页
Machinery Design & Manufacture
基金
国家"863"计划项目(2012AA062104)
江苏省高校科研成果产业化推进项目(JHB2011-31)
江苏省自然基金(BK2009098)
关键词
试验
截割部
振动
优化
Experiment
Cutting Unit
Vibration
Optimization
