复杂煤层赋存条件下薄煤层采煤机可靠性分析

发布时间：2018-03-10 13:09

  本文选题：采煤机　切入点：多体系统动力学　出处：《机械强度》2016年01期 　论文类型：期刊论文

【摘要】：以刚柔耦合多体系统动力学理论为基础,建立了采煤机截割部刚柔耦合模型,研究了内齿圈在啮合过程中的动力学行为;根据采煤机在复杂煤层赋存条件工作时滚筒受力情况,基于Matlab编程模拟出滚筒的载荷文件。通过Recur Dyn多体动力学软件进行仿真分析,得到采煤机内齿圈的应力分布及其与行星轮的接触力和接触力矩,与理论值进行比较验证了其正确性;通过疲劳寿命计算,得到了内齿圈齿面的最小疲劳循环次数,对内齿圈疲劳寿命的薄弱区域提出改进方法,延长其使用寿命。在产品设计时对其可靠性进行分析,降低了研发成本,为研究采煤机设备在大范围刚性运动与柔性构件小变形运动时的应力和疲劳寿命情况提供了新的方法。
[Abstract]:Based on the theory of rigid-flexible coupling multi-body system dynamics, the rigid-flexible coupling model of cutting part of shearer is established, and the dynamic behavior of inner gear ring in meshing process is studied. The load file of the drum is simulated based on Matlab. The stress distribution of the gear ring in the shearer, the contact force and the contact moment between the gear and the planetary wheel are obtained through the simulation and analysis of Recur Dyn multi-body dynamics software. Compared with the theoretical value, the correctness of the method is verified, the minimum fatigue cycle number of the inner gear tooth surface is obtained by fatigue life calculation, and the improvement method is put forward for the weak region of the inner ring fatigue life. In order to prolong its service life and analyze its reliability in product design, the cost of research and development is reduced, which provides a new method for studying the stress and fatigue life of shearer equipment under the condition of large range rigid motion and small deformation movement of flexible members.
【作者单位】： 辽宁工程技术大学机械工程学院;
【基金】：中国煤炭工业科技计划资助项目(MTKJ2009-264)资助~~
【分类号】：TD421.63
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本文编号：1593477