摘要
针对薄煤层采煤机滚筒装煤效率低的问题,采用离散元仿真方法对滚筒装煤过程进行研究。在UG中建立滚筒模型,利用颗粒流离散元软件PFC3D,建立模拟煤壁模型,将滚筒模型导入,形成滚筒、煤壁的组合仿真模型。通过顺转和逆转装煤对比实验,得出滚筒逆转装煤效率比滚筒顺转装煤效率高9.3%左右。通过正交实验,得到了叶片螺旋升角、滚筒转速、牵引速度三因素对滚筒装煤效率影响的显著性和最佳取值。仿真研究结果对薄煤层采煤机滚筒的设计具有一定的指导意义。
Aiming at the problems of poor coal loading efficiency of thin seam shearer,the coal loading process of drum is studied based on discrete element simulation method. The drum model is established in the three modeling software UG. The simulation model of coal wall is established by the simulation software PFC3D,and the drum model is imported to form a combined simulation model of drum and coal wall. By comparing the coal loading experiments of clockwise and reverse,it is resulted that the drum coal loading efficiency of reverse is about 9.3% higher than the coal loading efficiency of clockwise.Through the orthogonal experiment,the significance analysis results of helix angle of helical blade,drum speed and traction speed affecting the drum coal loading efficiency are acquired,and the best values of the three factors are achieved. The simulation results have certain guiding significance for the design of drum of thin coal seam shearer.
作者
徐婵
王义亮
杨兆建
XU Chan1,2, WANG Yi-liang1,2, YANG Zhao-jian1,2(1.Shanxi Key Laboratory of Fully Mechanized Coal Mining Equipment, Shanxi Taiyuan 030024, China;2.Taiyuan University of Technology, Shanxi Taiyuan 030024, Chin)
出处
《机械设计与制造》
北大核心
2018年第8期184-186,共3页
Machinery Design & Manufacture
基金
山西省煤基重点科技攻关项目(MJ2014-05-02)
山西省科技重大专项项目(20111101040)
关键词
薄煤层
采煤机
滚筒
装煤效率
离散元
Thin Coal Seam
Shearer
Drum
Coal Loading Performance
Discrete Element
