黑龙江科技大学学报2025，Vol.35Issue(1)：84-89,102,7.DOI:10.3969/j.issn.2095-7262.2025.01.013
极薄煤层采煤机滚筒渐变升角叶片的装煤效果
Coal loading effect of gradient rising angle blades of drum for very thin coal seam shearer
摘要
Abstract
This paper aims to address the problem of low coal loading efficiency of the shearer drum for very thin coal seams,and designs the gradient helix angle blades suitable for the coal flow direction characteristics within the drum for extremely thin coal seams.By taking the position of the segmentation point and the helix angle at the unloading end as the main design parameters,the study consists of stud-ying the coal loading process of the shearer drum with the discrete element method;developing a coupling model of the shearer spiral drum cutting the coal wall by using the discrete element analysis software EDEM to simulate the coal loading process of the shearer spiral drum;analyzing the coal loading efficien-cies of the ordinary blades and the gradually changing helix angle blades,and obtaining the particle ve-locities within the drum envelope range.The results show that the coal loading efficiency of the shearer spiral drum obtains an optimal value,as happens when the segmentation point of the gradient helix angle blade is taken at 1/2,the helix angle at the blade segmentation point is 18°,and the helix angle on the unloading end side is 24°;and within the blade envelope range,the ratio of the velocity of coal particles in y direction to that in x direction can obtain an optimal value.关键词
螺旋滚筒/装煤/离散元/EDEM/颗粒速度Key words
screw drum/coal loading/discrete element/EDEM/particle velocity分类
矿山工程引用本文复制引用
宋胜伟,高加龙,李士魁,陈翔宇..极薄煤层采煤机滚筒渐变升角叶片的装煤效果[J].黑龙江科技大学学报,2025,35(1):84-89,102,7.基金项目
黑龙江省首批"揭榜挂帅"科技攻关项目(2021ZXJ02A01) （2021ZXJ02A01）
