钢丝绳在箕斗装载过程中的纵向振动行为研究  

Analysis of Longitudinal Vibration of Wire Rope in Loading of Skip

作　　者：朱真才[1] 曹国华[1] 彭维红[1] 彭玉兴[1] 

机构地区：[1]中国矿业大学机电工程学院

出　　处：《中国矿业大学学报》2007年第3期325-329,共5页Journal of China University of Mining & Technology

基　　金：江苏高校高新技术产业发展项目(JHB05-34);江苏省六大人才高峰项目(苏人通[2005]6)

摘　　要：以矿井提升装载过程中的箕斗和钢丝绳为研究对象,建立了变质量箕斗的运动微分方程及钢丝绳的纵向振动微分方程.通过振型叠加和数值计算,分析了装载过程中钢丝绳的动位移、速度、动张力和末端载荷.结果表明:随着下落煤流量和速度的减小,动位移、动张力、速度以波动形式衰减且速度衰减明显,末端载荷以波动形式增加;装载前的初始值对波动幅值具有较大的影响;波动的频率随着装载进行而减小.装载时,采用适当的初始值及下落煤流量能够减小钢丝绳纵向振动幅度,有助于测得的载荷较准确地反映箕斗及煤的重量.Aiming at wire rope and skip in loading, movement differential equations of skip with different mass and longitudinal vibration differential equations of wire rope were proposed. By means of mode superposition and numerical estimation, the dynamic displacement, dynamic tension, velocity and terminal load of hoisting wire rope were investigated. The results show that amplitude of dynamic attenuates distinctly, and loading has a strong effect ues and coal flux both red ured by the instrument to displacement and dynamic tension decreases gradually, but velocity terminal load increases with fluctuation. The initial value before on amplitude, and frequency declines in loading. Optimal initial valuce wire rope＇s longitudinal amplitude, which favors the force measreflect weight of skip and coal.

关 键 词：箕斗装载 纵向振动 变质量运动 钢丝绳 

分 类 号：TD532[矿业工程—矿山机电]