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首页 > 过刊浏览>2022年第45卷第6期 >131-140. DOI:10.11835/j.issn.1000-582X.2021.04
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曳引电梯磁流制动器的磁流变液摩擦学性能分析
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TH-117.1

基金项目:

科技部国家重点研发计划子课题(2019YFB2005103);福建省自然科学基金面上项目(2020J01452);福建省教育厅中青年教师教育科研项目(JT180025;JAT190007)。


Analysis on the tribological properties of MRF for traction elevator magnetorheological brake
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    摘要:

    由于磁流变液存在颗粒自磨损以及颗粒与磁流变制动器工作壁面的摩擦问题,会影响电梯磁流变制动器的制动效果,因此对磁流变液的摩擦学性能进行分析非常关键。通过以石墨、油脂作为添加剂,制备4种硅油基磁流变液。利用四球摩擦试验机模拟磁流变液在电梯传动装置中的运行工况,记录摩擦系数的变化,并用影像显微镜观察和测量磨斑大小。通过流变仪测量磁流变液在摩擦实验前后流变性能的变化,分析磁流变液在装置中的摩擦磨损对其性能的影响。结果表明:添加剂在一定程度上对磁流变液具有减摩作用,摩擦后的流变性能均有所增大;所配制的编号3磁流变液具有低零场黏度、高磁致剪切应力、较好的稳定性,是适用于曳引电梯磁流变制动器中的磁流变液。

    Abstract:

    Due to the particle self-wear and friction between particles and the working wall of magnetorheological (MR) brake, the braking effect of MR brake will be affected. Therefore, it is very important to analyze the tribological performance of MR fluid. In this study, four kinds of MR fluid (MRF) were prepared with graphite and grease of silicone fluid as extra additives. First, the working condition of MRF in elevator transmission device was simulated by four-ball test machine. The friction coefficient changing of MRF was recorded, and the size of wear scar was observed and measured by image microscope. Then, by measuring the changes of the rheological properties of MRF before and after the friction experiment with rheometer, the influence of friction and wear on performance of the MRF in the device was analyzed. The experimental results show that the additive can reduce the friction of MRF to a certain extent, and the rheological properties increase after friction. The prepared MRF number 3 has low zero-field viscosity, high yield shear stress, and good stability, suitable for the MRF of traction elevator brake.

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陈郴,李雨铮,黄惠,陈凯峰,陈淑梅.曳引电梯磁流制动器的磁流变液摩擦学性能分析[J].重庆大学学报,2022,45(6):131-140.

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  • 收稿日期:2020-12-28
  • 最后修改日期:2021-04-12
  • 在线发布日期: 2022-06-18
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