紧急制动工况下矿井提升机动力学特性研究
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摘要
针对矿井提升机在紧急制动过程中存在的振动冲击及钢丝绳打滑问题,利用ANSYS和多体动力学软件RecurDyn建立落地式摩擦矿井提升机刚柔耦合动力学仿真模型,并搭建罐笼振动信号测试系统对仿真模型进行验证。在此基础上,利用仿真模型分析了恒减速紧急制动时由钢丝绳柔性特性引起的力矩传递延迟现象,并讨论载荷、制动减速度及制动曲线等提升参数对提升系统动力学特性的影响。结果表明:制动过程中系统的动负荷及制动曲线的变化率是引起提升系统产生振动冲击及打滑的重要因素;相比恒减速制动曲线和非恒减速制动曲线,提升机在制动时采用下降沿和上升沿带有斜坡的恒减速制动曲线可实现提升系统的快速平稳停车。
Aimed at the problems of vibration impact and slippage in the braking process of mine hoist,the rigid-flexible coupling dynamic simulation model of the floor-type friction hoist was established by using ANSYS and RecurDyn software,and the vibration signal test system of cage was built to verify the simulation model.The phenomenon of moment transfer delay caused by the flexible characteristics of the wire rope during constant deceleration braking was analyzed by simulation.The effects of lifting parameters such as load,braking deceleration and braking curve on the dynamic characteristics of hoisting system were discussed.The results show that the change rate of braking deceleration curve and the dynamic load in braking process are the important factors causing vibration impact and slippage of the hoisting system;Compared with the constant deceleration braking curve and the non-constant deceleration braking curve,the constant deceleration braking curve with slope on the descending edge and the ascending edge of the hoist can realize the fast and stable parking of the hoisting system.
Aimed at the problems of vibration impact and slippage in the braking process of mine hoist,the rigid-flexible coupling dynamic simulation model of the floor-type friction hoist was established by using ANSYS and RecurDyn software,and the vibration signal test system of cage was built to verify the simulation model.The phenomenon of moment transfer delay caused by the flexible characteristics of the wire rope during constant deceleration braking was analyzed by simulation.The effects of lifting parameters such as load,braking deceleration and braking curve on the dynamic characteristics of hoisting system were discussed.The results show that the change rate of braking deceleration curve and the dynamic load in braking process are the important factors causing vibration impact and slippage of the hoisting system;Compared with the constant deceleration braking curve and the non-constant deceleration braking curve,the constant deceleration braking curve with slope on the descending edge and the ascending edge of the hoist can realize the fast and stable parking of the hoisting system.
引文
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[12]刘义,杨芳,夏长高,等.摩擦提升机的横向振动特性[J].江苏大学学报(自然科学版),2016(5):518-524.LIU Y,YANG F,XIA C G,et al.Lateral vibration characteristics of friction hoist[J].Journal of Jiangsu University(Natural Science Edition),2016(5):518-524.
[13]张宣超.落地式多绳摩擦提升机钢丝绳绳弦横向振动研究[D].徐州:中国矿业大学,2015.ZHANG X C.Research on hoisting rope transverse vibration of console-model multi-cables rubbing hoist[D].Xuzhou:China University of Mining and Technology,2015.
[14]蒋玉强.立井刚性罐道系统的非线性耦合特性及状态评估研究[D].徐州:中国矿业大学,2011.JIANG Y Q.Research on nonlinar coupling characteristcs and condition assessment of vertical steel guide system[D].Xuzhou:China University of Mining and Technology,2011.
[15]李玉瑾,张保连.立井提升装置过卷动力学研究[J].煤炭科学技术,2016,44(1):157-160.LI Y J,ZHANG B L.Study on overwinding dynamics of mine shaft hoisting device[J].Coal Science and Technology,2016,44(1):157-160.
[2]赵强.提升机制动系统动态特性仿真及试验研究[D].太原:太原理工大学,2016.ZHAO Q.Simulation and experimental study on dynamic characteristics of hoist braking system[D].Taiyuan:Taiyuan University of Technology,2016.
[3]刘秋军.矿井提升钢丝绳动力学仿真分析[J].煤矿机械,2014,35(10):73-76.LIU Q J.Dynamics simulation of mine hoist wire rope[J].Coal Mine Machinery,2014,35(10):73-76.
[4]吴荣华.立井摩擦提升钢丝绳张力平衡动态特性及优化研究[D].徐州:中国矿业大学,2014.WU R H.Dynamic characteristics and optimization of hoisting frictional rope's tension balance[D].Xuzhou:China University of Mining and Technology,2014.
[5]吴娟,寇子明,梁敏,等.摩擦提升系统钢丝绳纵向-横向耦合振动分析[J].中国矿业大学学报,2015,44(5):885-892.WU J,KOU Z M,LIANG M,et al.Theoretical model and experiment verification of the coupling longitudinal-transverse vibration of rope for friction hoisting system[J].Journal of China University of Mining&Technology,2015,44(5):885-892.
[6]吴娟,寇子明,梁敏.摩擦提升系统钢丝绳横向动力学分析[J].振动与冲击,2016,35(2):184-188.WU J,KOU Z M,LIANG M.Transverse dynamics analysis of rope in multi-rope friction hoisting system[J].Journal of Vibration and Shock,2016,35(2):184-188.
[7]WU J,KOU Z M.Theoretical coupling longitudinal-transverse model and experimental verification of transverse vibration of rope for multi-rope friction hoisting system[J].Journal of China University of Mining&Technology,2016,3(1):77-84.
[8]包继虎,张鹏,朱昌明.变长度柔性提升系统钢丝绳横向振动建模及分析[J].上海交通大学学报,2012,46(3):341-345.BAO J H,ZHANG P,ZHU C M.Modeling and analysis of rope transverse vibration for flexible hoisting systems with timevarying length[J].Journal of Shanghai Jiaotong University,2012,46(3):341-345.
[9]BAO J H,ZHANG P,ZHU C M,et al.Transverse vibration of flexible hoisting rope with time-varying length[J].Journal of Mechanical Science&Technology,2014,28(2):457-466.
[10]曹国华,朱真才,彭维红,等.缠绕提升矿车进出罐笼过程钢丝绳耦合振动行为[J].煤炭学报,2009,34(5):702-706.CAO G H,ZHU Z C,PENG W H,et al.Coupled vibration of hoisting rope during tramcar pushing into of out cage in winding hoist system[J].Journal of China Coal Society,2009,34(5):702-706.
[11]WANG N,CAO G,ZHU Z,et al.Dynamical analysis and simulation validation of incompletely restrained cable-suspended swinging system driven by two cables[J].Shock and Vibration,2016:1-11.
[12]刘义,杨芳,夏长高,等.摩擦提升机的横向振动特性[J].江苏大学学报(自然科学版),2016(5):518-524.LIU Y,YANG F,XIA C G,et al.Lateral vibration characteristics of friction hoist[J].Journal of Jiangsu University(Natural Science Edition),2016(5):518-524.
[13]张宣超.落地式多绳摩擦提升机钢丝绳绳弦横向振动研究[D].徐州:中国矿业大学,2015.ZHANG X C.Research on hoisting rope transverse vibration of console-model multi-cables rubbing hoist[D].Xuzhou:China University of Mining and Technology,2015.
[14]蒋玉强.立井刚性罐道系统的非线性耦合特性及状态评估研究[D].徐州:中国矿业大学,2011.JIANG Y Q.Research on nonlinar coupling characteristcs and condition assessment of vertical steel guide system[D].Xuzhou:China University of Mining and Technology,2011.
[15]李玉瑾,张保连.立井提升装置过卷动力学研究[J].煤炭科学技术,2016,44(1):157-160.LI Y J,ZHANG B L.Study on overwinding dynamics of mine shaft hoisting device[J].Coal Science and Technology,2016,44(1):157-160.