薄煤层采煤机装煤性能研究

为了提高薄煤层采煤机的装煤性能及工作效率,运用理论分析与离散元数值模拟的方法对其进行了研究。针对理论落煤量及理论装煤量与牵引速度、滚筒截深、滚筒转速、螺旋升角的关系进行了理论分析;基于PRO/E与EDEM建立了采煤机截割部的离散元仿真模型及煤壁模型,模拟了采煤机截割、破碎煤岩的复杂过程,并获得了相应的装煤率;基于正交试验法分析了牵引速度、滚筒转速、叶片螺旋升角、滚筒截深对采煤机装煤性能的影响规律及显著程度。基于实际工况,得到了新型薄煤层采煤机的最优设计参数,为采煤机滚筒装煤性能的研究及优化提供了一种新方法。

Loading performance of thin seam shearer

In order to improve the loading performance and working efficiency of thin seam shearer,it was investigated using the method of theoretical analysis and discrete element numerical simulation.The relationship of theoretical coal falling and theoretical loading quantity with traction speed,drum depth,roller speed,and helix angle were theoretically analyzed.The discrete element simulation model of shearer cutting unit and coal wall model were established based on PRO/E and EDEM.The complex process of broken coal rock cutting of shearer was simulated and the corresponding loading rate was obtained.The influence and significant extent of traction speed,roller speed,helix angle,and drum depth on shearer loading performance were analyzed based on the orthogonal test method.Based on the actual working conditions,the optimal design parameters of the new thin coal seam shearer were obtained,and the loading performance of shearer was improved greatly,which provides a new method for the research and optimization of shearer loading performance.