基于分形维数的大型带式输送机动态特性研究
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摘要
为定量研究带式输送机启动制动过程中的动态特性,利用基于分形维数的评价方法,分析输送带黏弹性模型特性,建立离散有限元模型与仿真模型,并设计了带式输送机系统正弦速度控制曲线,研究在启动制动时,机头部、机尾部纵向动张力变化特性,应用分形理论分析在不同启动时间下,机头部张力维数与输送机系统稳定性的关系,内置张紧装置与外置张紧装置动态特性。结果表明:分形维数适用于评价带式输送机动态特性,分形维数越大,系统越不稳定,故障率越高,启动时,机头部张力维数大于机尾部,机头部更易发生故障,内置张紧装置载荷维数更大,故障率更高;启动时间为35～40 s时,机头部张力维数较小,带式输送机稳定性较高。
In order to quantitatively study the dynamic characteristics of belt conveyor during starting and braking,the characteristics of the viscoelastic model of conveyer belt were analyzed by fractal dimension-based evaluation method.The discrete finite element model and the simulation model were established.The sinusoidal speed control curve of belt conveyor system was designed.The characteristics of longitudinal dynamic tension of nose part and rear part of belt conveyor during starting and braking were studied.The fractal theory was applied to analyze the relationship between the tension force dimension of the head and the stability of conveyor system at different starting times,and the dynamic characteristics of the built-in tensioner and the external tensioning device.The results show that the fractal dimension is suitable for evaluating the dynamic characteristics of the belt conveyor. When the fractal dimension increases,the stability of the system becomes worse and the failure rate of belt conveyor becomes higher.When starting,the tensioning dimension of the head part is larger than that of rear part of engine,the head part is more prone to failure,and the built-in tension device has larger load dimension and higher failure rate.When starting time is 35 ～ 40 s,the tension dimension of the head part is small,and the belt conveyor has high stability.
In order to quantitatively study the dynamic characteristics of belt conveyor during starting and braking,the characteristics of the viscoelastic model of conveyer belt were analyzed by fractal dimension-based evaluation method.The discrete finite element model and the simulation model were established.The sinusoidal speed control curve of belt conveyor system was designed.The characteristics of longitudinal dynamic tension of nose part and rear part of belt conveyor during starting and braking were studied.The fractal theory was applied to analyze the relationship between the tension force dimension of the head and the stability of conveyor system at different starting times,and the dynamic characteristics of the built-in tensioner and the external tensioning device.The results show that the fractal dimension is suitable for evaluating the dynamic characteristics of the belt conveyor. When the fractal dimension increases,the stability of the system becomes worse and the failure rate of belt conveyor becomes higher.When starting,the tensioning dimension of the head part is larger than that of rear part of engine,the head part is more prone to failure,and the built-in tension device has larger load dimension and higher failure rate.When starting time is 35 ～ 40 s,the tension dimension of the head part is small,and the belt conveyor has high stability.
引文
[1]李军霞,寇子明.下运带式输送机复合制动系统仿真及试验研究[J].煤炭学报,2015,40(S2):553-559.LI Junxia, KOU Ziming. The characteristic analysis and experimental research of hydraulic speeding soft brake for downward belt conveyor[J]. Journal of China Coal Society,2015,40(S2):553-559.
[2]宋伟刚,王丹,左博.单点驱动带式输送机动力学分析的半解析方法[J].煤炭学报,2012,37(S1):217-223.SONG Weigang,WANG Dan,ZOU Bo. Semi-analytical solution to dynamic continuous model of belt conveyor with single drive[J].Journal of China Coal Society,2012,37(S1):217-223.
[3]王繁生.输送带柔性多体动力学建模方法研究[J].机械传动,2018,42(4):43-46.WANG Fansheng. Research of flexible multibody dynamics modeling of conveyor belt[J].Journal of Mechanical Transmission,2018,42(4):43-46.
[4] GAO Yang.Dynamics analysis and modeling of rubber belt in large mine belt conveyors[J]. Sensors&Transducers,2014,181(10):210-218.
[5]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 stretching energy consumption analysis of the belt conveyor based on the tertiary solid constitutive model[J].Machine Design&Research,2017,33(6):182-186.
[6]杜永强,廉自生.基于AMESim的长距离可伸缩带式输送机动态分析[J].机械工程与自动化,2017(4):66-67.DU Yongqiang,LIAN Zisheng. Dynamic analysis of long distance telescopic belt conveyor on AMESim[J]. Mechanical Engineering&Automation,2017(4):66-67.
[7] INDRASWARI Kusumaningtyas,ASHLEY J G Nuttall,GABRIEL Lodewijks. Dynamic of multiple-drive belt conveyors during starting[J]. Applied Mechanics and Materials,2016,842:141-146.
[8] BEBIC M Z,RISTIC L B.Speed controlled belt conveyors:drives and mechanical considerations[J]. Advances in Electrical and Computer Engineering,2018,18(1):51-60.
[9]李冬梅,赵士明.带式输送机拉紧装置启动过程动态仿真分析[J].机械传动,2017,41(2):100-103.LI Dongmei,ZHAO Shiming. Dynamic simulation analysis of the start-up process of take-up device of the belt conveyor[J].Journal of Mechanical Transmission,2017,41(2):100-103.
[10]杨俊宇.带式输送机永磁变频自动张紧装置的研究[D].太原:太原理工大学,2017:1-86.
[11]李纪栋,蒲绍宁,翟超,等.基于视频识别的带式输送机煤量检测与自动调速系统[J].煤炭科学技术,2017,45(8):212-216.LI Jidong,PU Shaoning,ZHAI Chao,et al.Coal quantity detection and automatic speed regulation system of belt conveyor based on video identification[J]. Coal Science and Technology,2017,45(8):212-216.
[12]陶伟忠.基于视频的煤矿带式输送机自动调速控制系统[J].煤炭科学技术,2017,45(5):28-33.TAO Weizhong.Automatic speed control system of mine belt conveyor based on video[J]. Coal Science and Technology,2017,45(5):28-33.
[13] BEBIC M Z,RISTIC L B.Speed controlled belt conveyors:drives and mechanical considerations[J]. Advances in Electrical and Computer Engineering,2018,18(1):51-60.
[14] HE D,PANG Y,LODEWIJKS G.Green operations of belt conveyors by means of speed control[J].Applied Energy,2017,188:330-341.
[15]张济忠.分形[M].北京:清华大学出版社,2011:79-82.
[16] YAKOV Pesin,VAUGHN Climenhaga.分形几何与动力系统讲义[M].北京:高等教育出版社,2016:79-85.
[17] PIOTR Kulinowski.Simulation method of designing and selecting tensioning systems for mining belt conveyors[J].Archives of Mining Sciences,2014,59(1):123-138.
[18]董立红,赵鹏兵.带式输送机拉紧装置张力的灰色预测PID控制[J].煤炭学报,2013,38(2):342-347.DONG Lihong,ZHAO Pengbing. Grey predictive PID control of the tensioning device system in belt conveyor[J].Journal of China Coal Society,2013,38(2):342-347.
[19]周广林,李阳星,聂文明.外置拉紧装置的带式输送机动态特性[J].黑龙江科技大学学报,2017,27(2):133-138.ZHOU Guanglin,LI Yangxing,NIE Wenming. Research on dynamic characteristics behind belt conveyor of external tension device[J]. Journal of Heilongjiang University of Science and Technology,2017,27(2):133-138.
[20]周广林,聂文明.外置张紧装置位置对带式输送机动态特性的影响研究[J].矿山机械,2017,45(7):30-33.ZHOU Guanglin,NIE Wenming.Research on influence of location of external tension device on dynamic characteristics of belt conveyor[J].Mining&Processing Equipment,2017,45(7):30-33.
[2]宋伟刚,王丹,左博.单点驱动带式输送机动力学分析的半解析方法[J].煤炭学报,2012,37(S1):217-223.SONG Weigang,WANG Dan,ZOU Bo. Semi-analytical solution to dynamic continuous model of belt conveyor with single drive[J].Journal of China Coal Society,2012,37(S1):217-223.
[3]王繁生.输送带柔性多体动力学建模方法研究[J].机械传动,2018,42(4):43-46.WANG Fansheng. Research of flexible multibody dynamics modeling of conveyor belt[J].Journal of Mechanical Transmission,2018,42(4):43-46.
[4] GAO Yang.Dynamics analysis and modeling of rubber belt in large mine belt conveyors[J]. Sensors&Transducers,2014,181(10):210-218.
[5]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 stretching energy consumption analysis of the belt conveyor based on the tertiary solid constitutive model[J].Machine Design&Research,2017,33(6):182-186.
[6]杜永强,廉自生.基于AMESim的长距离可伸缩带式输送机动态分析[J].机械工程与自动化,2017(4):66-67.DU Yongqiang,LIAN Zisheng. Dynamic analysis of long distance telescopic belt conveyor on AMESim[J]. Mechanical Engineering&Automation,2017(4):66-67.
[7] INDRASWARI Kusumaningtyas,ASHLEY J G Nuttall,GABRIEL Lodewijks. Dynamic of multiple-drive belt conveyors during starting[J]. Applied Mechanics and Materials,2016,842:141-146.
[8] BEBIC M Z,RISTIC L B.Speed controlled belt conveyors:drives and mechanical considerations[J]. Advances in Electrical and Computer Engineering,2018,18(1):51-60.
[9]李冬梅,赵士明.带式输送机拉紧装置启动过程动态仿真分析[J].机械传动,2017,41(2):100-103.LI Dongmei,ZHAO Shiming. Dynamic simulation analysis of the start-up process of take-up device of the belt conveyor[J].Journal of Mechanical Transmission,2017,41(2):100-103.
[10]杨俊宇.带式输送机永磁变频自动张紧装置的研究[D].太原:太原理工大学,2017:1-86.
[11]李纪栋,蒲绍宁,翟超,等.基于视频识别的带式输送机煤量检测与自动调速系统[J].煤炭科学技术,2017,45(8):212-216.LI Jidong,PU Shaoning,ZHAI Chao,et al.Coal quantity detection and automatic speed regulation system of belt conveyor based on video identification[J]. Coal Science and Technology,2017,45(8):212-216.
[12]陶伟忠.基于视频的煤矿带式输送机自动调速控制系统[J].煤炭科学技术,2017,45(5):28-33.TAO Weizhong.Automatic speed control system of mine belt conveyor based on video[J]. Coal Science and Technology,2017,45(5):28-33.
[13] BEBIC M Z,RISTIC L B.Speed controlled belt conveyors:drives and mechanical considerations[J]. Advances in Electrical and Computer Engineering,2018,18(1):51-60.
[14] HE D,PANG Y,LODEWIJKS G.Green operations of belt conveyors by means of speed control[J].Applied Energy,2017,188:330-341.
[15]张济忠.分形[M].北京:清华大学出版社,2011:79-82.
[16] YAKOV Pesin,VAUGHN Climenhaga.分形几何与动力系统讲义[M].北京:高等教育出版社,2016:79-85.
[17] PIOTR Kulinowski.Simulation method of designing and selecting tensioning systems for mining belt conveyors[J].Archives of Mining Sciences,2014,59(1):123-138.
[18]董立红,赵鹏兵.带式输送机拉紧装置张力的灰色预测PID控制[J].煤炭学报,2013,38(2):342-347.DONG Lihong,ZHAO Pengbing. Grey predictive PID control of the tensioning device system in belt conveyor[J].Journal of China Coal Society,2013,38(2):342-347.
[19]周广林,李阳星,聂文明.外置拉紧装置的带式输送机动态特性[J].黑龙江科技大学学报,2017,27(2):133-138.ZHOU Guanglin,LI Yangxing,NIE Wenming. Research on dynamic characteristics behind belt conveyor of external tension device[J]. Journal of Heilongjiang University of Science and Technology,2017,27(2):133-138.
[20]周广林,聂文明.外置张紧装置位置对带式输送机动态特性的影响研究[J].矿山机械,2017,45(7):30-33.ZHOU Guanglin,NIE Wenming.Research on influence of location of external tension device on dynamic characteristics of belt conveyor[J].Mining&Processing Equipment,2017,45(7):30-33.