矿井提升钢丝绳的动力学研究

Research of Hoisting Rope Dynamics in Mine

对矿井多绳摩擦提升过程的钢丝绳张力及动张力的变化进行了研究。在建立带尾绳的多绳摩擦提升系统提升过程中钢丝绳的粘弹性振动数学模型基础上,进行了动张力的求解。利用MATLAB6.5工具进行了计算机仿真,得到了上提加速、匀速、减速一个周期的多绳提升张力及动张力的变化规律。与实测钢丝绳张力信号的对比分析表明,本文所建立的钢丝绳粘弹性振动模型是正确的。最后模拟了在刚性罐道存在故障时钢丝绳动张力的变化。该建模仿真对于提升钢丝绳的合理选用、提升机运行控制方式的设计与改进以及刚性罐道的故障诊断都有着重要的参考价值。

The change of rope tension and dynamic tension during hoisting in multirope friction shaft were studied. Based on establishment of viscoelasticity vibration mathematical model about rope during hoisting process in multirope friction shaft with tail rope, the rope dynamic tension was resolved. With the MATLAB6.5 software, the change rule of rope tension and dynamic tension was simulated during one period of speed - up, uniform speed and slowdown in multirope friction shaft. Contrasting the simulation above and tension signals measured, it was indicated that the viscoelasticity vibration mathematical model is right. Finally, the change of rope dynamic tension was simulation in the case of failures in steelwork. The model building and simulation above are very useful in choosing rope properly, designing and improving the operational control mode of hoist and diagnosing failures about steelwork.