摘要
弓网系统作为高铁获得电能的装置,其接触状态严重影响列车运行状态,故研究弓网的载流摩擦磨损性能意义重大。利用销-盘式高速载流摩擦磨损试验机,以铜盘、纯碳为摩擦副来研究弓网系统中受电弓-接触线的载流摩擦磨损性能,研究电流、法向载荷、相对滑动速度与摩擦力矩的关系,并分析电流、法向载荷、相对滑动速度对销试样表面轮廓的影响。试验结果表明:摩擦力矩随电流的增大而减小,随法向载荷的增大而增大,随滑动速度的增大先减小后增大。销试样表面磨痕数量以及磨痕深度均随电流、法向载荷、相对滑动速度的增大而出现增加趋势,且此现象在大电流和高速度下尤为明显。
As a device for transporting energy to high-speed trains,the pantograph-catenary system will affect significantly the operation state of trains by the contact state,and so it is meaningful to study the tribological properties of pantograph-catenary system with electric current.In this work,using pin-on-disc high-speed current-carrying friction and wear tester,the tribological behaviors of pantograph-catenary system with electric current were studied by taking the copper disc/carbon pin as frictional pairs.Subsequently,the relationship between electrical current,normal load,relative sliding velocity and friction torque was discussed,and the influences of the above parameters on surface profile of the pin sample were further discussed.Results showed that the friction torque decreased with the increase of the electric current,increased with the increase of normal load,decreased initially and then increased with the increase of the relative sliding velocity.As electrical current,normal load and relative sliding velocity were improved,the number and depth of wear scars on the surface of pin samples all the time presented a tendency of increase,which especially became more obvious at high current and high speed.
作者
杨震
丁涛
郭媛
YANG Zhen;DING Tao;GUO Yuan(School of Mechanical Engineering,Hubei Engineering University,Xiaogan 432000,China;Key Laboratory of Metallurgical Equipment and Control Technology,Ministry of Education,Wuhan University of Science and Technology,Wuhan 430081,China;Hubei Key Laboratory of Mechanical Transmission and Manufacturing Engineering,Wuhan University of Science and Technology,Wuhan 430081,China)
出处
《材料保护》
CAS
CSCD
北大核心
2019年第11期63-67,76,共6页
Materials Protection
基金
湖北省教育厅科学研究计划重点项目(D20192704)资助
关键词
弓网系统
载流摩擦
摩擦力矩
表面轮廓
pantograph-catenary system
current-carrying friction
friction torque
surface profile
