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Nonlinear multi body dynamic modeling and vibration analysis of a double drum coal shearer

双滚筒采煤机的非线性多体动力学建模及振动分析

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Abstract

The double drum coal shearer is widely applied for the underground coal exploration in the mining industry. The vibration and noise control are significant factors for the stability design of the double drum coal shearer. In this paper, the vibration properties of a double drum coal shearer are firstly investigated. The horizontal, transverse and torsional vibrations of the motor body and the angle displacements of the rockers are taken into account. The walking units and the hydraulic units are modeled by the stiffness-damping systems. The nonlinear equation of motion of the double drum coal shearer is established by applying the Lagrange’s equation. The nonlinear vibration response of the system is calculated by using the Runge Kutta numerical method. The effects of the shearing loads, the equivalent damping and stiffness of the walking units, the inclination angels of the rockers and the equivalent damping and stiffness of the hydraulic units on the vibration properties of the system are discussed.

摘要

双滚筒采煤机广泛应用于煤矿工业中的地下煤炭开采。 采煤机的振动和噪声控制是对采煤机进行稳定性设计的重要因素之一。 本文对双滚筒采煤机的多体动力学振动特性进行分析。 考虑采煤机机身横向、纵向和扭转位移,以及采煤机摇臂的转角,将采煤机行走部以及液压缸模拟为弹簧-阻尼系统,采用Lagrange 法建立了双滚筒采煤机的非线性多体动力学模型,并用龙格库塔法进行数值求解。 讨论了截割载荷、行走部的等效弹性-阻尼系数、摇臂转角以及液压缸的等效弹性-阻尼系数对系统振动行为的影响。 通过仿真结果提出了对于双滚筒采煤机稳定性的若干设计建议。 本文可为煤炭开采机械的设计提供依据。

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Funding

Projects(51975511, U1708254) supported by the National Natural Science Foundation of China; Project(N2003023) supported by the Fundamental Research Funds for the Central Universities of China; Project(2019YFB2004400) supported by the National Key Research and Development Program of China; Project(2020-MS-092) supported by the Natural Science Foundation of Liaoning Province, China

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Authors and Affiliations

  1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang, 110819, China

    Xiao-li Zhang  (张晓丽) & Guo Yao  (姚国)

  2. School of Mathematics, Changchun Normal University, Changchun, 130032, China

    Xiao-li Zhang  (张晓丽)

  3. Equipment Reliability Institute, Shenyang University of Chemical Technology, Shenyang, 110142, China

    Yi-min Zhang  (张义民)

Authors
  1. Xiao-li Zhang  (张晓丽)
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  2. Guo Yao  (姚国)
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  3. Yi-min Zhang  (张义民)
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Contributions

YAO Guo provided the research background of the paper and edited the draft of manuscript. ZHANG Xiao-li conducted the literature review and wrote the first draft of the manuscript. ZHANG Yi-min provided the experiment conditions.

Corresponding authors

Correspondence to Guo Yao  (姚国) or Yi-min Zhang  (张义民).

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Conflict of interest

ZHANG Xiao-li, YAO Guo, and ZHANG Yi-min declare that they have no conflict of interest.

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Zhang, Xl., Yao, G. & Zhang, Ym. Nonlinear multi body dynamic modeling and vibration analysis of a double drum coal shearer. J. Cent. South Univ. 28, 2120–2130 (2021). https://doi.org/10.1007/s11771-021-4757-z

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  • DOI: https://doi.org/10.1007/s11771-021-4757-z

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