缠绕提升矿车进出罐笼过程钢丝绳耦合振动行为  

Coupled vibration of hoisting rope during tramcar pushing into or out cage in winding hoist system

作　　者：曹国华[1] 朱真才[1] 彭维红[1] 邵杏国[1] 

机构地区：[1]中国矿业大学机电工程学院,江苏徐州221008

出　　处：《煤炭学报》2009年第5期702-706,共5页Journal of China Coal Society

基　　金：国家自然科学基金资助项目(50875253);江苏省自然科学基金资助项目(BK2008127)

摘　　要：为合理评估矿车进出罐笼过程的振动特性,考虑提升钢丝绳的扭转运动、天轮和绳弦的作用,并根据Hamilton原理推导了摇台搭接和弹性承接装置承接2种工况下钢丝绳纵向-扭转耦合振动数学模型,基于阶跃函数给出了钢丝绳振型函数及矿车进出罐笼过程的振动位移、张力和扭矩的求解方法及近似解析表达式.应用分析结果表明:矿车进罐后承接装置承接时罐笼下沉的距离远小于摇台搭接下降的距离,提升钢丝绳张力和扭矩也相对较小,而罐笼冲击减速度的峰值变化不明显.在罐笼承接减速度满足煤矿安全规程要求时可采用弹性承接装置,有助于避免罐笼过度下沉而影响矿车进出罐笼.In order to evaluate the vibration characteristics reasonably during the tramcar pushing into or out cage, the coupled vibration characteristics of hoisting rope was investigated. According to Hamilton principle and considering the effect of torsional movement of wire rope, head sheave and hoisting rope string, the extensional-torsional coupled mathematical models during the cage supporting on the swing deck and the elastic supporting device was built. Based on the property of step function, the mode of hoisting rope was obtained and the method of numerical solution and approximately analytical expressions for displacement, tension and torque were proposed. The results show that the descendent distance of cage by using the elastic supporting device is much less than the swing deck, whereas the tension and torque of rope are slightly lower, but the cage deceleration peak is approximately equal. Consequently, it is suggested that the elastic supporting device should be used while the cage deceleration is limited to the allowable scope of the coal mine safety regulation, which favors to enhance the safety during tramcar pushing into or out cage.

关 键 词：缠绕提升 钢丝绳 耦合振动 承接装置 

分 类 号：TD532[矿业工程—矿山机电]