东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (12): 1744-1749.DOI: 10.12068/j.issn.1005-3026.2019.12.014

• 机械工程 • 上一篇    下一篇

直行截割下采煤机截割部齿轮箱动态特性实验分析

张睿1， 朱丽莎2， 张义民3   

  1. (1. 东北大学 机械工程与自动化学院， 辽宁 沈阳110819; 2. 肇庆学院 机械与汽车工程学院， 广东 肇庆526061；3.沈阳化工大学　装备可靠性研究所， 辽宁　沈阳 110142)
  • 收稿日期:2018-05-11 修回日期:2018-05-11 出版日期:2019-12-15 发布日期:2019-12-12
  • 通讯作者: 张睿
  • 作者简介:张睿(1989-)，男，辽宁抚顺人，东北大学博士研究生； 张义民(1958-)，男，吉林长春人，沈阳化工大学教授，博士生导师，长江学者特聘教授.冯明杰(1971-)， 男， 河南禹州人， 东北大学副教授; 王恩刚(1962-)， 男， 辽宁沈阳人， 东北大学教授，博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51171041).国家自然科学基金资助项目(51975511)； 广东省教育厅特色创新类项目(自然科学)(2018KTSCX252)； 国家自然科学基金-辽宁联合基金资助项目(U1708254).

Experimental Research of Dynamic Characteristics for Long Wall Shearer Cutting Unit Gearbox in Straight Line Cutting

ZHANG Rui1， ZHU Li-sha2， ZHANG Yi-min3   

  1. 1. School of Mechanical Engineering & Automation， Northeastern University， Shenyang 110819， China; 2. College of Mechanical Automotive Engineering， Zhaoqing University， Zhaoqing 526061， China; 3.Equipment Reliability Institute， Shenyang University of Chemical Technology， Shenyang 110142， China.
  • Received:2018-05-11 Revised:2018-05-11 Online:2019-12-15 Published:2019-12-12
  • Contact: ZHU Li-sha
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摘要： 目前对采煤机截割部齿轮箱振动特性的研究主要通过理论模型，但这些研究缺乏实验验证.通过实验室模拟井下真实的采煤机直行截割过程来分析齿轮箱非线性振动特性.以振动烈度为评判标准，与已有研究所得理论计算结果进行对比.以截深、牵引速度及煤岩体硬度为实验变量，分析它们对齿轮箱振动的影响规律.分析了煤岩体硬度突变冲击、拍振现象和电机启动冲击等影响齿轮箱可靠性的恶劣工况及其影响因素.本实验所得到的数据及相关结论可以为采煤机齿轮箱理论模型及可靠性分析提供参考和对照.

关键词: 采煤机, 振动实验, 截割部齿轮箱, 拍振现象, 动态特性

Abstract: The vibration characteristics of a long wall shearer’s cutting unit gearbox (SCUG) are mostly investigated by theoretical models， however， these results are lacking in experimental validation. For validating theoretical results and investigating some nonlinear dynamic characteristics of SCUG， a dedicated test set-up which can simulate the real coal mining process is developed to operate the long wall shearer in loaded and unloaded working conditions. Vibration severity is taken as a comparison standard of theoretical and experimental results. Cutting depth， traction speed and coal hardness are considered as the experimental variables and the contributions of these factors to the vibration of SCUG are ranked. Coal hardness mutation， beat vibration phenomenon and motor run-up impact which can contribute to the resonance and fatigue damage of SCUG are analyzed in the experiment， and the impact of drum load on them is also quantified. The data obtained by the experiment and the relevant conclusions may provide a certain reference for the correct understanding of vibration response and reliability analysis of SCUG.

Key words: long wall shearer, vibration experiment, cutting unit gearbox, beat vibration phenomenon, dynamic characteristics

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