采煤机刚柔耦合动力学仿真及实验研究

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英文篇名：DYNAMIC SIMULATION AND EXPERIMENTAL STUDY ON RIGID-FLEXIBLE COUPLING OF SHEARER 作者：张东升 ; 李岩 ; 宋秋爽 英文作者：ZHANG DongSheng;LI Yan;SONG QiuShuang;School of Construction Mechanical,Shandong Jiaotong University;Fuxin Innovation and Promotion Center of Industrial Technology;China Coal Mine Machinery Equipment Co.,Ltd.; 关键词：采煤机 ; 刚柔耦合 ; 动力学 ; 疲劳寿命 英文关键词：Shearer;;Rigid-flexible coupling;;Dynamics;;Fatigue life 中文刊名：JXQD 英文刊名：Journal of Mechanical Strength 机构：山东交通学院工程机械学院;辽宁市产业技术创新推广中心;中国煤矿装备有限责任公司; 出版日期：2019-08-05 出版单位：机械强度 年：2019 期：v.41;No.204 基金：国家自然科学基金资助项目(51304102);; 中煤能源集团重点科技项目(13-8)资助~~ 语种：中文; 页：JXQD201904025 页数：6 CN：04 ISSN：41-1134/TH 分类号：162-167

摘要

以大采高采煤机为研究对象,针对摇臂变形较大的问题,采用虚拟样机技术将前、后摇臂进行柔性化处理,建立了采煤机刚柔耦合动力学模型,通过实验测试获取了截齿传感器应变片数据,通过对传感器的实际标定及数据二次拟合得到载荷数据后进行仿真分析,并对关键零部件进行寿命预测。结果表明:在考虑采煤机摇臂的柔性变形时,摇臂连接销轴受力值和载荷波动值较大,说明摇臂柔性变形增加了整机的振动冲击,降低了采煤机的强度和寿命,并且采煤机摇臂销轴的疲劳寿命满足使用要求,疲劳寿命为1.738×10~6次,进一步证明了实验方法的可行性,并为实际工况中摇臂销轴的选型提供了理论依据。
        In order to solve the problem of large deformation of the rocker arm, the virtual prototyping technology is used to soften the front and rear rocker arm, and the dynamic and mechanical model of the shearer is established. The strain gauge data of the picking sensor are obtained, and the load data is obtained by quadratic fitting the actual calibration of the sensor and the data, and the life prediction of the key components is carried out. The results show that the stress value and the load fluctuation value of the rocker joint pin are larger when the flexible deformation of the rocker arm is considered, which indicates that the flexible deformation of the rocker arm increases the vibration impact of the whole machine and reduces the strength of the shearer And the life expectancy of the shearer's rocker pin, the fatigue life is 1.738×10~6 times, which proves the feasibility of the experimental method and provides the theory for the selection of the rocker pin in the actual working condition.

引文

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