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

作　　者：宋胜伟 高加龙 李士魁 陈翔宇 Song Shengwei;Gao Jialong;Li Shikui;Chen Xiangyu(School of Mechanical Engineering,Heilongjiang University of Science&Technology,Harbin 150022,China;Shuangyashan Shuangmei Electro Mechanical Equipment Co.Ltd.,Shuangyashan 155110,China)

机构地区：[1]黑龙江科技大学机械工程学院,哈尔滨150022 [2]双鸭山双煤机电装备有限公司,黑龙江双鸭山155110

出　　处：《黑龙江科技大学学报》2025年第1期84-89,102,共7页Journal of Heilongjiang University of Science And Technology

基　　金：黑龙江省首批“揭榜挂帅”科技攻关项目(2021ZXJ02A01)。

摘　　要：针对极薄煤层采煤机滚筒装煤效率差的问题,设计适用于极薄煤层滚筒内煤流走向特性的渐变升角叶片。以分段点的位置和卸载端升角为主要设计参数,采用离散元方法研究滚筒装煤过程,利用离散元分析软件EDEM构建滚筒截割煤壁耦合模型,仿真分析滚筒的装煤过程,探究普通叶片和渐变升角叶片装煤效率,以及滚筒包络范围内颗粒速度。结果表明,当渐变升角叶片的分段点取在1/2时,叶片分段点处升角为18°,卸载端侧升角为24°,滚筒装煤效率获得较优值,叶片包络范围内煤炭颗粒在y与x方向速度比值获得较优值。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 studying 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 efficiencies of the ordinary blades and the gradually changing helix angle blades,and obtaining the particle velocities 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 

分 类 号：TD421[矿业工程—矿山机电]