弓网接触副磨耗演变规律及其对动力学性能影响研究

doi:10.3901/JME.2025.18.288

摘要/Abstract

摘要： 当前弓网系统接触副不均匀磨耗现象频发，极大地增加了弓网系统运维成本，因此探究接触副磨耗性能演变规律及其对弓网动力学性能影响研究有着十分重要的意义。本研究首先通过地面试验探究接触副磨耗性能随运行里程的演变规律，并对接触线磨耗模型的磨损系数进行修正；随后，基于多体动力学理论及修正的接触线磨耗预测模型，建立考虑接触线磨损的弓网系统耦合模型，以探究接触线磨耗演变规律及其对弓网动力学性能的影响规律。结果表明：随着运行里程的增加，接触线不均匀磨耗加剧，弓网系统动力学性能恶化，接触线磨耗性能恶化，其中接触力最大值增加80.13%，接触力最小值降低98.82%，甚至出现离线情况，接触力标准差增加286.61%，接触线不均匀磨耗最恶劣处磨耗率增加546.33%。基于地面试验与仿真分析，发现滑板与接触线磨耗周期内均存在三个阶段，对于滑板可分为磨合期、稳定期及恶化期；对于接触线，由于受流质量的变化，其磨耗率变化可分为磨耗稳定期、缓慢恶化期及急剧恶化期。研究结果可为弓网载流摩擦磨损研究及弓网系统运维提供参考。

关键词: 弓网系统, 动力学性能, 磨耗性能, 接触线磨耗

Abstract: The frequent phenomenon of contact pair abnormal wear in the pantograph-catenary system(PCS) has significantly increased operational costs. Therefore, investigating the evolutionary law of contact pair wear performance and its impact on the dynamic performance of PCS is of great significance. Firstly, this study conducted ground experiments to explore the evolutionary law of contact pair wear performance with running mileage and to adjust the wear coefficient of the contact wire wear model. Subsequently, a pantograph-catenary coupled model considering contact wire wear is established based on multibody dynamics theory and the contact wire wear model above. The results indicate that as the operating distance increases, non-uniform wear of the contact wire escalates, leading to degradation in the dynamic performance of PCS and deterioration in the wear performance of the contact wire. The maximum contact force increases by 80.13%, while the minimum contact force decreases by 98.82%. Furthermore, the standard deviation of contact force rises by 286.61%. The wear rate of the most severe uneven wear point on contact wire increases by 546.33%. Based on ground experiments and simulation analysis, it is found that there are three stages in the wear cycle of both the carbon strip and the contact wire. For the carbon strip, these stages are the running-in stage, the stable stage, and the deterioration stage. For the contact wire, due to variations in dynamic interaction quality, its wear rate changes can be categorized into the wear stable stage, the slow deterioration period, and the deterioration period. The results of this study can provide reference for research on current-carrying friction and wear and maintenance of PCS.

Key words: pantograph and catenary system, dynamic performance, wear performance, contact wire wear

中图分类号:

U264

支兴帅, 程尧, 周宁, 李智威, 姜杭艳, 张卫华, 陈光雄. 弓网接触副磨耗演变规律及其对动力学性能影响研究[J]. 机械工程学报, 2025, 61(18): 288-298.

ZHI Xingshuai, CHENG Yao, ZHOU Ning, LI Zhiwei, JIANG Hangyan, ZHANG Weihua, CHEN Guangxiong. Study on Wear Evolvement of Pantograph-catenary System Contact Pairs and its Influence on Dynamic Performance[J]. Journal of Mechanical Engineering, 2025, 61(18): 288-298.

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