立井提升系统的卡罐动力学分析与研究

Analysis and Study on Cage Jammed Mechanics of Mine Shaft Hoisting System

论文建立了立井提升容器卡住时提升系统的动力学模型,研究了提升容器卡住时的动力学特性,得出了提升容器在突然卡住时钢丝绳的冲击力与系统变位质量成正比,与提升速度成正比,与振动频率成正比,与提升容器距提升机卷筒的距离成反比的重要结论。通过分析提升容器卡住时提升机两侧钢丝绳的冲击力数值,就可以合理确定井架或井塔的最大载荷,为分析卡罐、断绳事故提供了计算方法和理论依据。

A dynamics model of a hoisting system as a hoisting container jammed in the mine shaft was established. The dynamics features of the hoisting container as jammed were studied. Important conclusions on impact force of steel rope and system shift quantity being a direct ratio when a hoisting container suddenly jammed, the impact force and the hoisting speed being a direct ratio, the impact force and vibration frequency being a direction ratio, the impact force and the hoisting container distance to hoist drum being an inverse ratio were obtained. With an analysis on the impact force value of the two side steel ropes along the hoist when the hoisting container jammed, a max load of the mine shaft headframe or mine shaft tower could be rationally set up, which could provide the calculation method and theoretical basis to the analysis on the cage jammed and rope broken accident.