带式输送机运行过程中，输送带所受的动张力沿输送带运行方向以波的形式传播，并在传播的过程中产生纵向振动，输送带较大的纵向振动会影响多滚筒驱动力的分配。本文以Kelvin-Voigt黏弹性模型作为输送带力学模型进行分析，由输送带的本构方程建立长距离带式输送机输送带纵向振动驱动力分配方程，以天津港某条头部双滚筒驱动长距离带式输送机为例，仿真启动过程中驱动滚筒的驱动力变化曲线及输送带振动曲线，将仿真结果与试验结果相比对，得到对于头部双滚筒驱动的带式输送机系统，随着输送带弹性模量的增大输送带振动减轻，双滚筒驱动驱动力的分配更加接近理想的功率配比的结果。研究结论为输送带的合理选型提供可靠依据，并能使电机工作在设计工作点附近，避免因驱动力分配不均而烧毁驱动电机。
Abstract
In running process of a belt conveyor, the dynamic tension of conveyor belt propagates in the form of wave along the running direction of belt, and produces longitudinal vibration in process of transmission. The larger longitudinal vibration of belt can affect the distribution of driving force of multiple rollers. Here, Kelvin-Voigt viscoelastic model was taken as the mechanical model of conveyor belt, and the distribution equation of driving force for longitudinal vibration of long-distance belt conveyor was established based on the constitutive equation of conveyor belt. Taking a certain long-distance belt conveyor driven by its head double-drum in Tianjin Port as an example, the driving force variation curve of driving drum and the vibration curve of conveyor belt in start-up process were simulated. The simulation results were compared with test ones. It was shown that for the belt conveyor system driven by its head double-drum, with increase in elastic modulus of conveyor belt, vibration of belt is reduced, and driving force distribution of double-drum drive is closer to the ideal power ratio; the study results can provide a reliable basis for rational selection of conveyor belt, and make the motor work near the design work point to avoid burning the drive motor due to uneven driving force distribution.
关键词
长距离带式输送机 /
纵向振动 /
多滚筒驱动 /
驱动力分配 /
AMEsim
{{custom_keyword}} /
Key words
long distance belt conveyor /
longitudinal vibration /
multi-drum drive /
driving force distribution /
AMEsim
{{custom_keyword}} /
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
［1］乔博,李军霞.带式输送机纵向振动特性仿真研究［J］.煤炭技术,2015,34(1):285-288.
QIAO Bo, LI Junxia. Simulation study on longitudinal vibration characteristicsof belt conveyor ［J］. Coal Technology,2015,34(1):285-288.
［2］庞晓旭. 带式输送机纵向振动特性研究［D］.太原:太原理工大学,2015.
［3］桑宏琪.煤矿井下带式输送机多电动机驱动功率平衡［J］.煤矿机电,2019,40(6):58-60.
SANG Hongqi. Power balance driven by multiple motors of underground coal mine belt conveyor［J］. Coal Mine Electro Mechanical,2019,40(6):58-60.
［4］TATKIC＇ S, JEFTENIC＇ I B, MILAN Z, et al. Reliability assessment of the single motor drive of the belt conveyor on drmno open-pit mine［J］. International Journal of Electrical Power & Energy Systems,2019,113:393-402.
［5］王保华,刘敬平,卢杉.大功率高速带式输送机发展分析［J］.矿山机械,2014,42(1):4-7.
WANG Baohua, LIU Jingping, LU Shan. Development analysis of high-power high-speed belt conveyor［J］. Mining Machinery,2014,42(1):4-7.
［6］GRAMBLIKA S, KOHR R, STOPKA M. Dynamic analysis of mechanical conveyor drive system［J］.Procedia Engineering, 2017,192:259-264.
［7］ANDRIANOV I V, HORSSEN W T V. On the transversal vibrations of a conveyor belt［J］.Applicability of Simplified Models Journal of Sound and Vibration, 2008,313(3/4/5):822-829.
［8］周广林,韩忠惠,郭延超.阻尼比对输送带横向振动特性的影响研究［J］.机械设计,2019,36(11):50-55.
ZHOU Guanglin, HAN Zhonghui, GUO Yanchao. Influence of damping ratio on transverse vibration characteristics of conveyor belt ［J］. Mechanical Design,2019,36(11):50-55.
［9］庞明鑫.大型带式输送机纵向振动动力学研究［J］.煤矿机械,2016,37(10):27-30.
PANG Mingxin. Study on longitudinal vibration dynamics of largebelt conveyor ［J］.Coal Mine Machinery,2016,37(10):27-30.
［10］刘广胜.强力带式输送机输送带纵向撕裂机理研究［J］.矿山机械,2012,40(6):56-59.
LIU Guangsheng. Research on longitudinal tearing mechanism of conveyor belt of strong belt conveyor［J］. Mining Machinery,2012,40(6):56-59.
［11］SUWEKEN G, HORSSEN W T V. On the transversal vibrations of a conveyor belt with a low and time-varying velocity, part I: the string-like case［J］. Journal of Sound and Vibration, 2003,264(5/6):117-133.
［12］HOMIIN J, GREGA R, KAAY P, et al. Removal of systematic failure of belt conveyor drive by reducing vibrations［J］.Engineering Failure Analysis,2019,99(5): 192-202.［13］陈洪月,张坤,李恩东,等.基于三元固体本构模型的带式输送机纵向动态特性与拉伸能耗分析［J］.机械设计与研究,2017,33(6):182-186.
CHEN Hongyue, ZHANG Kun, LI Endong, et al. Longitudinal dynamic characteristics and energy consumption analysis of belt conveyor based on ternary solid constitutive model ［J］. Mechanical Design and Research,2017,33(6):182-186.
［14］张杰，李军霞.基于AMEsim的带式输送机制动过程的动态分析［J］.机械设计与制造,2016(8):161-163.
ZHANG Jie, LI Junxia. Dynamic analysis of belt conveyor braking process based on AMEsim［J］. Machinery Design and Manufacturing, 2016(8): 161-163.
［15］周亚傲.大型带式输送机系统仿真分析方法的研究［D］.北京：华北电力大学,2016.
［16］HE D J, PANG Y S, LODEWIJKS G. Green operations of belt conveyors by means of speed control［J］.Applied Energy,2017,188:330-341.
［17］杨庭杰，郝洪涛，张超,等.带式输送机起动与加载过程建模仿真［J］.机械设计与研究,2019,35(5):153-157.
YANG Tingjie, HAO Hongtao, ZHANG Chao, et al. Modeling and simulation of starting and loading process of belt conveyor［J］. Mechanical Design and Research, 2019,35(5):153-157.
［18］赵晓霞，孟文俊，陈昱璇.基于输送带弹性伸长率的带式输送机功率平衡研究［J］.煤炭技术,2017,36(9):219-221.
ZHAO Xiaoxia, MENG Wenjun, CHEN Yuxuan. Research on power balance of belt conveyor based on elastic elongation of conveyor belt［J］. Coal Technology, 2017,36(9):219-221.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(1645 KB)
