doi:10.16186/j.cnki.1673-9787.2020090075

Received:2020/09/17

Revised:2021/01/19

Published:2022/01/10

Ｒesearch on cutting performance of shearer drum under different coal unloading condition

ZHANGQiang 1,2, ZHANGXiaoyu 2

1.School of Mechanical and Electronic Engineering， Shandong University of Science and Technology， Qingdao 266590 ， Shandong， China；2.School of Mechanical Engineering， Liaoning University of Engineering and Technology， Fuxin  123000 ， Liaoning， China

Abstract: In order to improve the mining coal efficiency of machine，the cutting model of drum was established in EDEM． For the influence regulation and influence sequence of hole aperture，hole depth and hole spacing， cutting resistance，cutting moment，breaking coal rate and falling coal amount were analyzed by orthogonal test method and range method． Breaking coal rate and falling coal amount were taken as evaluation indexes，the best matching parameter of drilling and the influence sequence of three factors on cutting performance were obtained by matrix． The results showed that: With the increase of hole aperture，the cutting resistance was decreased，the cutting torque and falling coal amount were decreased first and then increased，and the breaking coal rate increased; With the increase of hole depth，the cutting resistance increased，the cutting torque and breaking coal rate decreased，and the falling coal amount increased first and then decreased; With the increase of hole spacing，the cutting resistance first decreased and then increased，the cutting torque and falling coal amount de creased，and the breaking coal rate increased and then decreased． The regulation of influence of three factors on cutting resistance and cutting torque was hole diameter，hole spacing and hole depth，the regulation of influence of three factors on breaking coal rate was hole depth，hole diameter and hole spacing，the regulation of influence of three factors on falling coal amount was hole spacing，hole diameter and hole depth，and the influence regulation of the three factors on cutting performance was hole spacing，hole diameter and hole depth． The best matching parameters of drilling were that hole diameter 60 mm，hole depth 180 mm，hole spacing 375 mm．

Key words:coal unloading;shearer drum;cutting performance;EDEM

 不同卸荷工况下采煤机滚筒截割性能研究_张强.pdf