Influence of longitudinal vibration on the friction and wear characteristics of multi-layer winding hoisting wire rope
Influence of longitudinal vibration on the friction and wear characteristics of multi-layer winding hoisting wire rope
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DOI：
10.1016/j.wear.2021.204211
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发表时间：
2021-12
期刊：
影响因子：
5
通讯作者：
Qing Zhang;Yu-xing Peng;Zhengyan Zhu;X. Chang;Hao Lu;Zhou Zhou-Zhou;Guo-hua Cao;Wei Tang;Guoan Chen
中科院分区：
文献类型：
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作者：
Qing Zhang;Yu-xing Peng;Zhengyan Zhu;X. Chang;Hao Lu;Zhou Zhou-Zhou;Guo-hua Cao;Wei Tang;Guoan Chen
多层缠绕提升钢丝绳由于自重时变和提升加速度的波动，其纵向振动是不可避免的。纵向振动会导致提升钢丝绳与绳槽之间产生相对滑动，产生摩擦磨损，从而威胁钢丝绳的使用寿命。为了研究纵向振动对钢丝绳摩擦学特性的影响及其磨损机理，利用自行研制的试验台，进行了不同纵向振动幅值和频率下滑动钢丝绳与固定钢丝绳槽之间的摩擦磨损试验。结果表明，钢丝绳摩擦系数随滑动距离的增加经历了快速增长、"凹"过渡和相对稳定3个阶段，在相对稳定阶段，摩擦系数随振幅的增加先增大后减小，随频率的增加变化不明显。另外，在相对稳定阶段，滑动钢丝绳出绳区和接触钢丝绳中部的最大温升随振幅的增大先增大后减小，随频率的增大而逐渐增大。在快速磨损阶段，钢丝绳磨损区域的振动强度有很大的增加。钢丝绳的振动磨损机制主要为磨粒磨损和粘着磨损，沟槽和磨粒粘着区O元素含量较高，频率对钢丝绳磨损表面氧化程度的影响小于振幅。
The longitudinal vibration of the multi-layer winding hoisting wire rope is inevitable due to the time-varying dead weight and the fluctuation of hoisting acceleration. Longitudinal vibration will lead to relative sliding between the hoisting wire rope and the rope groove, resulting in friction and wear, and thus threaten the service life of the wire rope. In order to investigate the influence of longitudinal vibration on the tribological characteristics of the wire rope and its wear mechanism, the friction and wear tests between the sliding wire rope and the fixed wire rope groove under different longitudinal vibration amplitudes and frequencies were carried out with the help of a self-developed test rig. Results show that the coefficient of friction (CoF) of the wire rope has experienced three stages of rapid growth, “concave” transition and relative stability with the increase of sliding distance, which increases first and then decreases with increasing the amplitude in the relatively stable stage and has no obvious change with an increase in the frequency. Additionally, the maximum temperature rises at the wind-out region of the sliding wire rope and the middle of the contact wire ropes increase first and then decrease with the increase of the amplitude in the relatively stable stage, but increase gradually with an increase in the frequency. The vibration intensities in the wear regions of the wire ropes have a great increase in the rapid wear stage. Furthermore, the main vibration wear mechanisms of the wire rope are abrasive wear and adhesive wear, the content of O element in the furrows and the abrasive adhesion regions are higher, and the frequency has less effect on the oxidation degree of the worn surface of the wire rope than the amplitude.