卡链工况下刮板输送机扭摆振动特性分析
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摘要
考虑到常规研究刮板输送机卡链工况时仅考虑双侧同样载荷卡链工况,主要研究单侧卡链工况及其对刮板链条体系扭摆振动特性的影响。对卡链故障的产生原因以及卡链载荷的模拟施加方式进行了分析。研究了刮板输送机卡链工况的力学模型,选用Voigt模型建立刮板输送机扭摆振动动力学模型,使用Matlab软件建立动力学方程和状态方程,对建立的动力学方程构造出函数子程序,实现动力分析的前处理。通过仿真分析得到卡链位置前后物料不同的4种工况下刮板链条体系扭摆振动速度、加速度以及张力情况,并进行了实验验证。研究结果可知,卡链过程会引起刮板链条体系强烈的扭摆振动,并且初始时候无物料情况下,扭摆振动更明显。前后方均有物料情况下,扭摆振动稍有减弱。
The conventional study on scraper conveyor chain working condition only considers the bilateral same load chain working condition.This paper mainly studies the single side chain condition and its effect on the vibration characteristics of the scraper chain system torsional pendulum.The cause of the chain failure and the way of applying the load simulation are analyzed.Also,the paper investigates the mechanical model of scraper conveyor chain working condition,selects Voigt model to establish the dynamic model of scraper conveyor torsion pendulum vibration,uses Matlab software to establish dynamic equation and state equation,and constructs a function subroutine to the established dynamic equation.The preprocessing of dynamic analysis is realized.The vibration speed,acceleration and tension of the torsion pendulum of the scraper chain system are obtained by simulation analysis under four different working conditions of different materials before and after the chain position,and the experimental results are verified. The results show that the chain process will cause a strong torsion vibration of the scraper chain system,and the torsional pendulum vibration is more obvious when there is no material at the beginning.In the case of both front and rear materials,the vibration of torsion pendulum weakens slightly.
The conventional study on scraper conveyor chain working condition only considers the bilateral same load chain working condition.This paper mainly studies the single side chain condition and its effect on the vibration characteristics of the scraper chain system torsional pendulum.The cause of the chain failure and the way of applying the load simulation are analyzed.Also,the paper investigates the mechanical model of scraper conveyor chain working condition,selects Voigt model to establish the dynamic model of scraper conveyor torsion pendulum vibration,uses Matlab software to establish dynamic equation and state equation,and constructs a function subroutine to the established dynamic equation.The preprocessing of dynamic analysis is realized.The vibration speed,acceleration and tension of the torsion pendulum of the scraper chain system are obtained by simulation analysis under four different working conditions of different materials before and after the chain position,and the experimental results are verified. The results show that the chain process will cause a strong torsion vibration of the scraper chain system,and the torsional pendulum vibration is more obvious when there is no material at the beginning.In the case of both front and rear materials,the vibration of torsion pendulum weakens slightly.
引文
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[19]刘治翔,谢春雪,毛君,等.基于物料分布特征的刮板输送机运行阻力分析[J].煤炭学报,2018,43(4):1155-1161.LIU Zhixiang,XIE Chunxue,MAO Jun,et al.Analysis of operation resistance of scraper conveyor based on material distribution characteristics[J].Journal of China Coal Society,2018,43(4):1155-1161.
[20]杨超峰,殷智宏,吕兆平,等.多通道式液压衬套动态特性的测试与计算分析[J].振动.测试与诊断,2016,36(6):1057-1064.YANG Chaofeng,YIN Zhihong,LZhaoping,et al.Experiment and calculation of the low frequency performance of a hydraulic bushing with multiple tracks[J].Journal of Vibration,Measurement&Diagnosis,2016,36(6):1057-1064.
[2]ZHANG Qiang,WANG Haijian,GUO Tong.Fatigue damage of Vlock chain ring under radom load[J].Polish Maritime Research,2016,23(S1):4-9.
[3]SOBOTA P.Determination of the friction work of a link chain interworking with a sprocket drum[J].Archives of Mining Sciences,2013,58(3):805-822.
[4]DOLIPSKI M,REMIORZ E,SOBOTA P.Dynamics of non-uniformity loads of AFC drives[J].Archives of Mining Sciences,2014,59(1):155-168.
[5]李惟慷,毛君,李建刚,等.刮板输送机刮板间距的优化[J].辽宁工程技术大学学报,2008,27(6):912-914.LI Weikang,MAO Jun,LI Jiangang,et al.Optimization for scraper spacing of scraper conveyor[J].Journal of Liaoning Technical University,2008,27(6):912-914.
[6]徐广明,杨伟红.刮板输送机运行阻力计算分析[J].煤矿机械,2009,30(1):3-5.XU Guangming,YANG Weihong.Analysis of scraper conveyor running resistance[J].Coal Mine Machinery,2009,30(1):3-5.
[7]韩德炯,李冬浩,宋伟刚.刮板输送机动力学问题的差分数值解法与计算机仿真[J].矿山机械,2009,37(11):22-26.HAN Dejiong,LI Donghao,SONG Weigang.Differential numerical solution and computer simulation of dynamic problems of the scraper conveyor[J].Mining Machinery,2009,37(11):22-26.
[8]ZHANG Xing,LI Wei,ZHU Zhencai,et al.Tension monitoring for the ring chain transmission system using an observer-based tension distribution estimation method[J].Advances in Mechanical Engineering,2017,9(9):1-16.
[9]马树焕.刮板输送机动态分析中货载量的处理[J].煤矿机械,2011,32(1):192-193.MA Shuhuan.Dealed with load in dynamics characteristic analysis of scraper conveyer[J].Coal Mine Machinery,2011,32(1):192-193.
[10]蔡柳.煤散料在刮板输送机中部槽内的运输状态与力学行为[D].太原:太原理工大学,2016.CAI Liu.Conveying state and mechanical behavior of bulk coal in the middle pan of scraper conveyor[D].Taiyuan:Taiyuan University of Technology,2016.
[11]SHI Zhiyuan,ZHU Zhencai.Wear analysis of the middle plate of a heavy-load scraper conveyor chute under a range of operating conditions[J].Wear,2017,380(6):36-41.
[12]王亚滨.重型刮板输送机可控启动装置控制系统研究[D].太原:太原理工大学,2016.WANG Yabin.Research on the control system of controlled starting transmission in heavy scraper conveyor[D].Taiyuan:Taiyuan University of Technology,2016.
[13]张东升,毛君,刘占胜.刮板输送机启动及制动动力学特性仿真与实验研究[J].煤炭学报,2016,41(2):513-521.ZHANG Dongsheng,MAO Jun,LIU Zhansheng.Dynamics smulation and experiment on the starting and braking of scraper conveyor[J].Journal of China Coal Society,2016,41(2):513-521.
[14]许文馨.刮板输送机在冲击载荷作用下的动态特性研究[D].阜新:辽宁工程技术大学,2015.XU Wenxin.Study on dynamic characteristics of Scraper coveyor under impact load[D].Fuxin:Liaoning Technical University,2015.
[15]谢苗,毛君,许文馨.重型刮板输送机故障载荷工况与结构载荷工况的动力学仿真研究[J].中国机械工程,2012,23(10):1200-1204.XIE Miao,MAO Jun,XU Wenxin.Dynamics simulation of heavy scraper conveyor in working condition of failure-load and structural load[J].China Mechanical Engineering,2012,23(10):1200-1204.
[16]毛君,师建国,张东升,等.重型刮板输送机动力建模与仿真[J].煤炭学报,2008,33(1):103-106.MAO Jun,SHI Jianguo,ZHANG Dongsheng,et al.Dynamic modeling and simulation of heavy scraper conveyor[J].Journal of Coal,2008,33(1):103-106.
[17]HARGRAVE CHAD O,JAMES CRAIG A,RALSTON JONATHON C.Infrastructure-based localisation of automated coal mining equipment[J].International Journal of Coal Science&Technology,2017,4(3):252-261.
[18]WANG Jinhua.Development and prospect on fully mechanized mining in Chinese coal mines[J].International Journal of Coal Science&Technology,2014,1(3):153-260.
[19]刘治翔,谢春雪,毛君,等.基于物料分布特征的刮板输送机运行阻力分析[J].煤炭学报,2018,43(4):1155-1161.LIU Zhixiang,XIE Chunxue,MAO Jun,et al.Analysis of operation resistance of scraper conveyor based on material distribution characteristics[J].Journal of China Coal Society,2018,43(4):1155-1161.
[20]杨超峰,殷智宏,吕兆平,等.多通道式液压衬套动态特性的测试与计算分析[J].振动.测试与诊断,2016,36(6):1057-1064.YANG Chaofeng,YIN Zhihong,LZhaoping,et al.Experiment and calculation of the low frequency performance of a hydraulic bushing with multiple tracks[J].Journal of Vibration,Measurement&Diagnosis,2016,36(6):1057-1064.
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