多绳摩擦式提升机钢丝绳动态特征及提升参数研究

Study on Dynamic Characteristics and Lifting Parameters of Wire Ropes of Multi-rope Friction Type Hoist

  • 摘要: 为避免多绳摩擦式矿井提升机因大幅横向振动引起的碰绳故障,进而确定合理的提升参数,分析了恒定长度的提升钢丝绳和可变长度的提升钢丝绳在天轮波动引起的周期性外部激励下的动力学行为,建立了动力学模型并进行了实验验证,阐述了提升参数对提升钢丝绳横向振动的影响。结果表明:大振幅横向振动通常与提升钢丝绳相关,当外部激励频率在危险共振频率范围内时,会激发出大幅度的横向振动,从而诱发可能的绳索碰撞。研究成果可为提升系统的优化设计、安全运行和维护保养提供理论依据和技术支持。

     

    Abstract: In order to avoid rope collision faults caused by large-amplitude transverse vibration of multi-rope friction-type mine hoist, and then to determine reasonable hoisting parameters, the dynamic behaviors of constant-length hoisting wire ropes and variable-length hoisting wire ropes under periodic external excitation induced by fluctuation of the flywheel are analyzed, and a dynamic model and experimental validation are established to illustrate the effect of hoisting parameters on the transverse vibration of hoisting wire ropes. The results show that large-amplitude transverse vibration is usually associated with hoisting ropes, and when the external excitation frequency is in the range of hazardous resonance frequency, large-amplitude transverse vibration will be excited, thus inducing possible rope collisions. The research results can provide theoretical basis and technical support for the optimized design, safe operation and maintenance of the hoisting system.

     

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