摘要
针对井下大型液压支架斜井提升运输问题,结合该煤矿实际工况参数,构建了大型液压支架运输虚拟样机系统,探析了不同速度、加速度以及制动减速度对缠绕时钢丝绳动张力以及平板车运输液压支架运行稳定性的影响。结果发现:平板车的最大振动幅值约5.0 mm左右;平板车的中心随着制动减速度增大而逐渐偏离轨道中心;钢丝绳最大动张力均小于最小破断力,最小安全系数仅为2.0,但是加速和匀速阶段钢丝绳平均动张力均大于最大静张力,在此种工况下钢丝绳极易发生疲劳损伤而提前失效,不满足长期使用的要求。
Aiming at the inclined shaft hoisting and transportation of the large hydraulic support in mine,a virtual prototype system for transporting large hydraulic support was constructed according to the actual working conditions of the coal mine.The effect of the speed,acceleration and braking deceleration on the dynamic tension of wire rope and the transportation stability of the flat car in the process of mine hoisting was analyzed.The results show that the maximum vibration amplitude of the flat car is about 5.0 mm.The mass center of the flat car gradually deviates from the track center with the increase of braking deceleration.The maximum dynamic tension of wire rope is less than the minimum breaking force and the minimum safety factor is only 2.0.However,the average dynamic tension of wire rope is greater than the maximum static tension in the acceleration and uniform speed stages.Therefore,the wire rope is prone to fatigue damage and early failure,which can not meet the requirements of long-term use.
作者
陈太光
李学泽
王迎春
徐春明
CHEN Tai-guang;LI Xue-ze;WANG Ying-chun;XU Chun-ming(Xinjiang Co.,Ltd.,National Energy Group,Uruniqi 830001,China;School of Mechanical and Electrical Engineering,China University of Mining and Technology,Xuzhou 221116,China)
出处
《煤炭技术》
CAS
2020年第12期136-140,共5页
Coal Technology
关键词
井下运输
大型液压支架
斜井提升
钢丝绳
动力学特性
underground transportation
large hydraulic support
inclined shaft hoisting
wire rope
dynamic property
