Influence of coal cowl parameters on the coal loading process of thin coal seam shearer drum

Author:

Xu Weipeng,Zhang Xiaodi,Gao Kuidong,Ma Shenghao

Abstract

AbstractThe low loading rate of the thin coal seam shearer drum is a severe obstacle to the efficient mining of thin seam resources, and the auxiliary drum loading through the cowl is an effective measure to alleviate this situation. However, the working mechanism of the coal cowl still remains unclear. In this paper, with the help of the discrete element method and the modeling experiment method, the effects of coal cowl’s offset distance, tilt angle and wrap angle on the coal loading rate under different loading modes of the drum are investigated; and the significance of various factors and their interactions to the drum coal loading rate is explored by designing response surface experiments. The findings show that a monotonous negative correlation between the offset distance of the coal cowl and the coal loading rate is identified, and that a smaller offset distance can effectively improve the coal loading rate of the drum. The conveying torque is significantly increased, easily inducing the drum choking, coal recycling coal over-crushing. Along with the increasing tilt angle, the rate of ejection loading decreases monotonically, and the rate of pushing loading increases first and then decreases. Coal loading rate is weakly affected by changes in coal cowl’s wrap angle. The results of response surface analysis reveal that the most significant factors affecting the drum’s coal loading rate are tilt angle and offset distance in ejection and pushing loading modes, respectively. The conclusions drawn here offer implications for improving the coal loading performance of the thin coal seam shearer drum, as well as certain guidance on the optimal design of coal cowl parameters.

Funder

National Natural Science Foundation of China

Project of Shandong Province Higher Educational Young Innovative Talent Introduction and Cultivation Team

Publisher

Springer Science and Business Media LLC

Reference41 articles.

1. Hurt, K. G. & Mcstravick, F. G. High performance shearer drum design. Colliery Guard. 236, 425–429 (1988).

2. Ayhan, M. Investigation into the Cutting and Loading Performance of Drum Shearer in OAL Mine (The University of Hacettepe, 1994).

3. Ayhan, M. & Eyyumboglu, E. M. Comparison of globoid and cylindrical shearer drums’ loading performance. J. S. Afr. Inst. Min. Metall. 106(1), 51–56 (2006).

4. Gao, K. D. et al. An applied model of minimum rotating speed for drum shearer to avoid drum clogging. J. Eng. Res. 7, 1–19 (2019).

5. Gao, K. D. et al. Model test of helical angle effect on cola loading performance of shear drum. Int. J. Min. Sci. Technol. 22(002), 165–168 (2012).

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3