基于物料分布特征的刮板输送机运行阻力分析
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摘要
考虑到常规的链条安全系数是按照两个链条共同承受外界载荷来计算的,而实际情况是两根链条载荷是不均匀的,因此研究了基于考虑物料分布特征的刮板输送机运行阻力计算方法。对煤块物料与中部槽底板的摩擦阻力、煤块物料与挡煤板摩擦阻力以及移动的煤块物料与煤壁侧静止物料的摩擦阻力进行理论推导。得到刮板和链条在运行时,不同负载情况下的运行阻力计算公式。依托国家能源局研发(实验)中心建设的综采成套装备模拟实验台对基于物料分布特征的运行阻力计算方法进行实验研究。研究结果表明:本计算方法与实验数据误差在允许范围内。基于考虑物料分布特征的刮板输送机运行阻力计算方法可为后续进行偏置载荷影响下的链条寿命预测、安全系数计算等提供依据。
Considering that the conventional chain safety factor is calculated according to the external load of two chains,and the actual situation is that the load of two chains is uneven,this paper studies the calculation method of the operation resistance of scraper conveyor based on the material distribution characteristics. The frictional resistance of the coal material and the bottom of the central trough,frictional resistance of the coal material and the retaining plate,and the frictional resistance of the moving coal material and the static material on the wall side are deduced theoreti cally. The calculation formula of the running resistance of the scraper and chain is obtained under different load condi tions. Based on the simulation test rig of fully mechanized complete sets of equipment constructed by National Energy Agency Research and Development(experimental)Center,this paper investigates the operating resistance calculation method on the basis of the material distribution characteristics. The research results show that the computational meth od and the error of experimental data are within the allowable range. In this paper,the calculation method of the oper ating resistance of scraper conveyor based on the material distribution characteristics provides the basis for the chain life prediction and the safety factor calculation under the influence of offset load.
Considering that the conventional chain safety factor is calculated according to the external load of two chains,and the actual situation is that the load of two chains is uneven,this paper studies the calculation method of the operation resistance of scraper conveyor based on the material distribution characteristics. The frictional resistance of the coal material and the bottom of the central trough,frictional resistance of the coal material and the retaining plate,and the frictional resistance of the moving coal material and the static material on the wall side are deduced theoreti cally. The calculation formula of the running resistance of the scraper and chain is obtained under different load condi tions. Based on the simulation test rig of fully mechanized complete sets of equipment constructed by National Energy Agency Research and Development(experimental)Center,this paper investigates the operating resistance calculation method on the basis of the material distribution characteristics. The research results show that the computational meth od and the error of experimental data are within the allowable range. In this paper,the calculation method of the oper ating resistance of scraper conveyor based on the material distribution characteristics provides the basis for the chain life prediction and the safety factor calculation under the influence of offset load.
引文
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[13]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,2016:11-20.WANG Yabin.Study on the control system of controllable start-ing device of heavy scraper conveyor[D].Taiyuan:Taiyuan Univer-sity of Technology,2016:11-20.
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[15]SHI Zhiyuan,ZHU Zhencai.Wear analysis of the middle plate of a heavy-load scraper conveyor chute under a range of operat-ing conditions[J].Wear,2017,380-381:36-41.
[16]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 simula-tion and experiment on the starting and braking of scraper conveyor[J].Journal of China Coal Society,2016,41(2):513-521.
[17]王淑平,杨兆建,王学文.刮板输送机驱动链轮磨损与啮合力学行为[J].煤炭学报,2014,39(1):166-171.WANG Shuping,YANG Zhaojian,WANG Xuewen.Wear of driving sprocket for scraper convoy and mechanical behaviors at meshing progress[J].Journal of China Coal Society,2014,39(1):166-171.
[19]WANG Jinhua.Development and prospect on fully mechanized min-ing in Chinese coal mines[J].International Journal of Coal Science&Technology,2014,1(3):253-260.
[18]毛君,李贵轩.刮板输送机动力学行为分析与控制理论研究[M].沈阳:辽宁大学出版社,2006.MAO Jun,LI Guixuan.Study on scraper conveyor dynamics analysis and control theory[M].Shenyang:Liaoning University Press,2006.
[20]WANG Haijian,ZHANG Qiang,XIE Fei.Dynamic tension test and intelligent coordinated control system of a heavy scraper conveyor[J].IET Science Measurement&Technology,2017,11(7):871-877.
[2]WANG Jinhua,YU Bin,KANG Hongpu,et al.Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultra-thick coal seams[J].International Jour-nal of Coal Science&Technology,2015,2(2):97-161.
[3]王金华,黄乐亭,李首滨,等.综采工作面智能化技术与装备的发展[J].煤炭学报,2014,39(8):1418-1423.WANG Jinhua,HUANG Leting,LI Shoubin,et al.Development of intelligent technology and equipment in fully-mechanized coal mining face[J].Journal of China Coal Society,2014,39(8):1418-1423.
[4]SIKORA W.The inhomogeneity of drive device of efficient scrap-er conveyor[J].Przegl.Gorn,1993(4):23-26.
[5]MURPHY C J,BLISS R E.Method and apparatus for belt conveyor load tracking[P].U.S.Patent:5335777,1994-08-09.
[6]KATTERFELD A,GR?GER T,MINKIN A.Discrete element simu-lation of transfer stations and their verification[A].9th International Conference on Bulk Materials Storage,Handling and Transportation[C].Newcastle,NSW,Australia,2007.
[7]DOLIPSKI M,REMIORZ E,SOBOTA P.Dynamics of non-uniformi-ty loads of AFC drives[J].Archives of Mining Sciences,2014,59(1):155-168.
[8]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 of scraper spacing in scraper conveyor[J].Journal of Liaoning Technical Uni-versity,2008,27(6):912-914.
[9]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.Calculation and analysis of running resistance of scraper conveyor[J].Coal Mine Machinery,2009,30(1):3-5.
[10]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 numeri-cal method and computer simulation of dynamic problem of scrap-er conveyor[J].Mining Machinery,2009,37(11):22-26.
[11]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.
[12]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,2016:5-10.CAI Liu.Transportation and mechanical behavior of coal bulk mate-rial in the middle trough of scraper conveyor[D].Taiyuan:Taiyuan University of Technology,2016:5-10.
[13]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,2016:11-20.WANG Yabin.Study on the control system of controllable start-ing device of heavy scraper conveyor[D].Taiyuan:Taiyuan Univer-sity of Technology,2016:11-20.
[14]HARGRAVE Chad O,JAMES Craig A,RALSTON Jonathon C.In-frastructure-based localisation of automated coal mining equipment[J].International Journal of Coal Science&Technology,2017,4(3):252-261.
[15]SHI Zhiyuan,ZHU Zhencai.Wear analysis of the middle plate of a heavy-load scraper conveyor chute under a range of operat-ing conditions[J].Wear,2017,380-381:36-41.
[16]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 simula-tion and experiment on the starting and braking of scraper conveyor[J].Journal of China Coal Society,2016,41(2):513-521.
[17]王淑平,杨兆建,王学文.刮板输送机驱动链轮磨损与啮合力学行为[J].煤炭学报,2014,39(1):166-171.WANG Shuping,YANG Zhaojian,WANG Xuewen.Wear of driving sprocket for scraper convoy and mechanical behaviors at meshing progress[J].Journal of China Coal Society,2014,39(1):166-171.
[19]WANG Jinhua.Development and prospect on fully mechanized min-ing in Chinese coal mines[J].International Journal of Coal Science&Technology,2014,1(3):253-260.
[18]毛君,李贵轩.刮板输送机动力学行为分析与控制理论研究[M].沈阳:辽宁大学出版社,2006.MAO Jun,LI Guixuan.Study on scraper conveyor dynamics analysis and control theory[M].Shenyang:Liaoning University Press,2006.
[20]WANG Haijian,ZHANG Qiang,XIE Fei.Dynamic tension test and intelligent coordinated control system of a heavy scraper conveyor[J].IET Science Measurement&Technology,2017,11(7):871-877.