为了解决传统薄煤层采煤机装运效率低和载荷波动大的问题，以滚筒的螺旋叶片为研究对象，通过离散元仿真试验，研究不同螺旋升角下滚筒装运性能的变化规律。结果表明：直径为1 200 mm的滚筒在螺旋升角逐渐增加的情况下，滚筒的装运效率从73.31%逐步提高至76.56%，当螺旋升角达到18°时获得最佳装运效率，螺旋升角由18°继续增长至30°时，滚筒的装运效率与螺旋升角呈负相关趋势。以最佳螺旋升角为基础，对螺旋叶片进行结构优化，仿真试验表明：优化后滚筒的装运效率提高了9.94%，载荷波动降低了22.59%。

In order to solve the problems of low loading efficiency and large load fluctuation of traditional thin seam shearer, taking the spiral blade of the drum as the research object, the variation law of the loading performance of the drum under different spiral lift angle was studied through discrete element simulation test. The results show these as follows When the spiral angle of the drum with a diameter of 1 200 mm is gradually increased, the loading efficiency of the drum is gradually increased from 73.31% to 76.56%. When the spiral angle reaches 18°, the optimal loading efficiency is obtained. When the spiral angle continues to increase from 18° to 30°, the loading efficiency of the drum is negatively correlated with the spiral angle. Based on the optimal spiral lifting angle, the structure of the spiral blades was optimized, and the simulation results showed that the loading efficiency of the drum was increased by 9.94% and the load fluctuation was reduced by 22.59%.