不同煤岩硬度下采煤机侧向振动特性分析  

Analysis on the shearer’s lateral vibration characteristics with different coal and rock hardness

作　　者：杨辛未 毛君[2] 陈洪月[2,3,4] 宋秋爽 YANG Xin-wei;MAO Jun;CHEN Hong-yue;SONG Qiu-shuang(School of Electrical and Control Engineering,Liaoning Technical University,Huludao 125105;School of Mechanical Engineering,Liaoning Technical University,Fuxin 123000;Dynamic Research for High-end Complete Integrated Coal Mining Equipment and Big Data Analysis Center,China National Coal Association,Fuxin 123000;Combined Mining Technology and Equipment Engineering National Research Center,Fuxin 123000;China National Coal Mining Equipment Co.,Ltd.,Beijing 100011)

机构地区：[1]辽宁工程技术大学电气与控制工程学院,辽宁葫芦岛125105 [2]辽宁工程技术大学机械工程学院,辽宁阜新123000 [3]煤炭工业协会高端综采成套装备动力学测试与大数据分析中心,辽宁阜新123000 [4]矿山液压技术与装备国家工程研究中心,辽宁阜新123000 [5]中国煤矿装备有限责任公司,北京100011

出　　处：《机械设计》2019年第11期37-43,共7页Journal of Machine Design

基　　金：国家能源研发（实验）中心重大资助项目（2010_215）;辽宁省教育厅创新团队资助项目（LT2013009）

摘　　要：针对采煤机在实际工作过程中的振动问题,运用多体动力学理论,综合考虑采煤机导向滑靴与销排的接触特性、平滑靴与刮板输送机的中部槽之间的摩擦及采煤机滚筒、摇臂、机身各部分之间的连接特性和机身的振动摆角,建立了采煤机侧向的6个自由度的动力学模型。并将采煤机滚筒轴向栽荷作为外部激励,采用数值分析方法,求解了不同煤岩硬度对采煤机侧向振动特性的影响。结果表明:当煤岩的截割阻抗均值在200〜400 kN/m之间变化时,对采煤机前后截割部的振动位移影响较大,前后滚筒的变化范围分别为3.241~7.062 m m和3.077~6.703 m m,前后摇臂的变化范围分别为1.298~2.829 mm,1.133~2.468 m m,最后通过试验对模型结果进行了验证。In order to deal with the vibration of the shearer in practical work,the 6-degree-of-freedom dynamic model of theshearer*s lateral section is worked out based on the theory of multi-body dynamics,with the following factors taken into consideration:the contact characteristics of the guide boots and the pin-rail,the friction between the flat boots and the middle trough,aswell as the connectivity among the parts of the shearer and its vibration angle. In addition,based on the assumption that the axialsection of the shearer drum is taken as the external excitation, the influence of different coal and rock hardness on the lateralvibration characteristics of the shearer is solved by numerical analysis. The results show that the mean of coal cutting impedancehas great influence on the vibration displacement of the front and rear cutting units when the range is 200~400 kN/m. The displacementranges of the front and rear drums are 3.241 〜7.062 mm and 3.077〜6.703 mm,while the displacement ranges of thefront and rear rocker arms are 1.298〜2.829 mm and 1.133〜2.468 mm. Finally,the model results are verified by experiments.

关 键 词：采煤机 煤岩硬度 振动 数值分析 试验研究 

分 类 号：TH113.1[机械工程—机械设计及理论]