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Factors affecting thin coal seam shearer drum coal-loading performance by a model test method

薄煤层采煤机滚筒装煤率影响因素的模化试验研究

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Abstract

To solve the problem of a low coal-loading rate being exhibited by the drum shearer on Chinese thin coal seams, systematic tests and research were performed to study the pivotal factors’ influences on drum coal-loading rate using a model test method. The effects of the drum hub diameter, cutting depth, vane helix angle, drum rotation speed and hauling speed on drum coal-loading rate were determined under circumstances of coal-loading with drum ejection and pushing modes, and reasons for these phenomena were analyzed. The results indicate that the influence of the drum cutting depth on the drum coal-loading rate is the most significant. The parameters of hub diameter, drum rotation speed and hauling speed can influence the drum coal-loading rate by cutting the coals’ filling rate in the drum. The parameters of vane helix angle and drum rotation speed can influence drum coal-loading rates by influencing the ratio of cutting coals’ tangential and axial speed in the drum. The coal-loading rate with drum ejection is clearly higher than that observed with drum pushing. Research in this study can provide support to design the drum structure and select drum operational parameters for a thin coal seam shearer.

摘要

针对中国薄煤层开采中滚筒采煤机装煤率低这一问题,本文利用模化试验的方法对影响滚筒装 煤率的几个关键因素展开了系统的试验研究。通过试验获得了滚筒筒毂直径、截深、叶片螺旋升角、 滚筒转速和牵引速度在抛射装煤和推挤装煤条件下对滚筒装煤率的影响规律,并分析了产生这些现象 的主要原因。通过研究发现:滚筒截深对滚筒装煤率的影响最为显著;筒毂直径、滚筒转速、牵引速 度通过影响滚筒内截落煤体的填充率而影响滚筒装煤率;叶片螺旋升角和滚筒转速通过影响滚筒内煤 体的切向速度和轴向速度比值而影响滚筒装煤率;滚筒抛射装煤率要明显高于推挤装煤。上述研究结 论能够为指导薄煤层采煤机滚筒的结构设计和运行参数选择提供帮助。

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Authors and Affiliations

  1. College of Mechanical & Electrical Engineering, Shandong University of Science and Technology, Qingdao, 266590, China

    Kui-dong Gao  (高魁东), Wen-bo Xu  (徐温博) & Shou-bo Jiang  (江守波)

  2. Jiangsu Key Laboratory of Mine Mechanical and Electrical Equipment, China University of Mining and Technology, Xuzhou, 221116, China

    Kui-dong Gao  (高魁东) & Chang-long Du  (杜长龙)

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  1. Kui-dong Gao  (高魁东)
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  2. Wen-bo Xu  (徐温博)
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Correspondence to Kui-dong Gao  (高魁东).

Additional information

Foundation item: Project(2012AA062104) supported by the National High Technology Research and Development Program of China; Project(51704178) supported by the National Natural Science Foundation of China; Project(ZR2017MEE034) supported by Natural Science Foundation of Shandong Province, China; Project(2018T110700) supported by China Postdoctoral Science Foundation

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Gao, Kd., Xu, Wb., Jiang, Sb. et al. Factors affecting thin coal seam shearer drum coal-loading performance by a model test method. J. Cent. South Univ. 26, 1619–1636 (2019). https://doi.org/10.1007/s11771-019-4117-4

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