矿井提升钢丝绳的动力学研究_李占芳.pdfVIP

试验研究 ( 2007- 10) 11 李占芳,肖兴明, 刘正全, 季 华 (中国矿业大学 机电工程学院, 江苏 徐州 221008) : 对矿井多绳摩 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 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。 :提升钢丝绳; 动张力;仿真 : TD532 : A : 1003- 496X(2007) 10- 0011- 04 R esearch of H oisting R op e D ynam ics in M ine LI Zhan- fang, XIA X ing- ming, LIU Zheng- quan, JIHua ( College of M echanical and E lectricalE ngineering, China University of M ining and Technology, X uzhou 221008, China ) A bstrac t: The change of rope tension and dynam ic tension during hoisting inmultirope friction shaftwere studied. Based on establish- ment of viscoelasticity vibration mathematicalmodel about rope during hoisting process in multirope friction shaft with tail rope, the rope dynamic tension was resolved. W ith theMATLAB6. 5 software, the change rule of rope tension and dynam ic tensionwas smi ulated during one period of speed- up, uniform speed and slowdown inmultirope friction shaft. Contrasting the smi ulation above and tension signalsmeasured, itwas indicated that the viscoelasticity vibration mathematicalmodel is right. F inally, the change of rope dynam ic tensionwas smi ulation in the case of failures in steewl ork. The modelbuilding and smi ulation above are very useful in choosing rope properly, designing and mi proving the operational controlmode of hoist and diagnosing failures about steewl ork. K ey w ord s: hoisting rope; dynam ic tension; smi ulation 随着高产高效矿井的发展, 现代矿井提升的高 位等故障,这种冲击会急剧增大, 使得钢丝绳的动张 度和速度都在提高, 致使提升钢丝绳在运行过程所 力产生突变, 因此, 通过测量钢丝绳的动张力