第三轨中间接头不平顺阈值研究  

Research on threshold of irregularity of the third rail intermediate joint

作　　者：阮杰[1] 郭文 魏国梁 徐鸿燕[2] 阎晓晖 RUAN Jie;GUO Wen;WEI Guoliang;XU Hongyan;YAN Xiaohui(Hubei Key Laboratory of Modern Automobile Parts Technology,Wuhan University of Technology,Wuhan 430070,China;Electrification Department of China Railway Siyuan Survey and Design Institute Group Co.,Ltd.,Wuhan 430063,China;Wuhan Metro Operation Co.,Ltd.,Wuhan 430035,China)

机构地区：[1]武汉理工大学现代汽车零部件技术湖北省重点实验室,湖北武汉430070 [2]中铁第四勘察设计院集团有限公司电化院,湖北武汉430063 [3]武汉地铁运营有限公司,湖北武汉430035

出　　处：《铁道科学与工程学报》2021年第6期1563-1572,共10页Journal of Railway Science and Engineering

基　　金：中国铁路总公司课题(2016J006-B)。

摘　　要：第三轨中间接头安装的平整度直接影响到整个第三轨受流系统的可靠性。以武汉地铁某线使用的第三轨受流系统为研究对象,通过靴轨动态特性试验探究了靴轨动态接触力的变化规律及第三轨动态冲击来源。结合靴轨动态接触的特点,建立了含中间接头的靴轨冲击模型,并利用实验数据验证了冲击模型的计算结果;基于验证后的该模型,分析了中间接头不平顺激励下靴轨系统的动力学特性,并明确了中间接头不平顺的阈值。分析结果表明:中间接头不平顺高度差控制在0.2 mm以内,能够满足地铁车辆在较高速度下运行,并能有效减小靴轨冲击峰值和降低离线率。The smoothness of the third rail intermediate joint installation directly affects the reliability of the whole third rail current collection system.Taking the current collection system of the third rail used in a certain line of Wuhan Metro as the research object,the variation law of the dynamic contact force of the shoe rail and the source of the dynamic impact of the third rail were explored through the dynamic characteristics test of the shoe rail.According to the characteristics of shoe rail dynamic contact,a shoe rail impact model with intermediate joint was established,and the calculation results of the impact model were verified by experimental data;based on the verified model,the dynamic characteristics of shoe rail system under the excitation of intermediate joint irregularity were analyzed,and the threshold value of intermediate joint irregularity was defined.The analysis results show that:the height difference of the middle joint irregularity is controlled within 0.2 mm,which can meet the requirements of metro vehicle running at high speed,and can effectively reduce the impact peak value of shoe rail and reduce the off-line rate.

关 键 词：第三轨 中间接头 动态响应 阈值 

分 类 号：U263.34[机械工程—车辆工程]