摘要
通过理论分析与实验测试相结合的方法,研究了受电弓滑板压力分布规律与磨损机理之间的关联性。滑板表面压力分布呈周期性演化特征,分为初始振动与稳定波动两个阶段。列车运行速度从100 km/h提升至160 km/h时,压力均方根值从0.22 N增至0.52 N,不均匀系数提高25%。滑板材料在载流工况下主要发生机械磨损与电气磨损,包括黏着磨损、磨粒磨损、疲劳磨损和电弧烧蚀。电气磨损随列车运行速度增加而加剧,在160 km/h工况下对总磨损量的贡献率达45%。通过建立压力-磨损耦合分析模型,量化压力分布不均匀性与磨损率的关系:不均匀系数每增加0.1,材料磨损率提高约12%。该研究为受电弓滑板的结构优化设计及磨损控制提供了理论指导。
By combining theoretical analysis with experimental testing,this study investigates the correlation between the pressure distribution pattern and wear mechanism of pantograph sliding contacts.The surface pressure distribution exhibits periodic evolution characteristics,divided into two stages:initial vibration and stable fluctuation.When train speed increases from 100 km/h to 160 km/h,the root mean square(RMS)pressure value rises from 0.22 N to 0.52 N,with the unevenness coefficient increasing by 25%.Under current-carrying conditions,the contact strip material primarily experiences mechanical and electrical wear,including adhesive wear,abrasive wear,fatigue wear,and arc erosion.Electrical wear intensifies with increasing speed,contributing up to 45%of total wear at 160 km/h.A coupled pressure-wear analysis model quantifies the relationship between pressure distribution non-uniformity and wear rate:each 0.1 increase in the non-uniformity coefficient elevates material wear rate by approximately 12%.This study provides theoretical guidance for structural optimization and wear control of pantograph collector sliders.
作者
江海晨
Jiang Haichen(Guiyang Urban Rail Transit Operation Co.,Ltd.,Guiyang Guizhou 550081,China)
出处
《机械管理开发》
2025年第12期9-11,14,共4页
Mechanical Management and Development
关键词
受电弓滑板
压力分布
磨损机理
动力学模型
电弧烧蚀
pantograph collector shoe
pressure distribution
wear mechanism
kinetic model
arc ablation
