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为研究复杂煤层赋存条件下采煤机截割部行星减速机构的动态特性,建立了采煤机刚-柔耦合动态模型。对极端工况下的采煤机滚筒外负载进行了分析及动态模拟,在动态仿真分析软件Recur Dyn中进行了加载与虚拟仿真。对截割部行星减速机构中的内齿圈进行了受力分析,找到了最大等效应力位置并根据其受力情况进行了结构优化。对齿轮修形后的行星减速机构再次进行仿真,发现最大等效应力小于材料许用应力,并且齿面疲劳寿命得到了较大地提高,保证了采煤机可靠工作,为齿轮动力学研究提供了重要参考。
In order to study the dynamic characteristics of the planetary reduction mechanism at the cutting section of the shearer under the condition of complex coal seams, a rigid-flexible coupled dynamic model of shearer was established. Analysis and dynamic simulation of shearer drum load under extreme conditions were carried out. The loading and virtual simulation were carried out in the dynamic simulation software Recur Dyn. The force analysis of the ring gear in the planetary reducer of the cutting part was carried out to find the position of the maximum equivalent stress and to optimize the structure according to its force. Simulation of the planetary gear reduction mechanism after gear modification shows that the maximum equivalent stress is less than the allowable material stress and the fatigue life of the tooth flank has been greatly improved to ensure the reliable operation of shearer and provide a Important reference.