刚性悬挂接触网弓网磨耗原因分析及改善建议  

Analysis of Abnormal Wear of Pantograph and Catenary in Rigid Suspension Overhead Contact System and Improvement Suggestions

作　　者：刘志洲[1] Liu Zhizhou

机构地区：[1]上海市隧道工程轨道交通设计研究院

出　　处：《隧道与轨道交通》2024年第2期67-70,75,共5页Tunnel and Rail Transit

摘　　要：刚性悬挂接触网的弓网异常磨耗是轨道交通供电系统的突出问题,不仅会增加运营成本,同时也是轨道交通安全运营的重要隐患。从弓网受流的原理出发,结合刚性悬挂接触网特点,对刚性悬挂接触网异常磨耗原因进行了分析,得出加速取流段大电流热效应、锚段关节结构本身与受电弓匹配性差、局部接触网硬点等是造成弓网异常磨耗的主要原因。针对性地提出了改善异常磨耗的建议,包括提高刚性悬挂接触网弹性、采用扁平底部型接触线、优化锚段关节参数及布置方式、重视运营初期动态检测及调整、采用局部磨耗辅助装置及优化列车牵引策略等建议,以期提高刚性悬挂接触网服役水平,保障轨道交通安全、经济、高效运行。Abnormal wear of pantograph and catenary in rigid suspension overhead contact systems is a prominent issue in the power supply system of rail transit,which not only increases operating costs but also poses a significant safety hazard to the safe operation of rail transit.Based upon the principle of current collection between pantograph and catenary,and combining the characteristics of rigid suspension overhead contact system,the causes of abnormal wear are analyzed.It concludes that the main reasons are the thermal effect of high current in the accelerated current collection section,the poor matching between the joint structure of the anchor section and the pantograph,and local hard spots of the catenary.The suggestions proposed include improving the elasticity of the rigid suspension overhead contact system,adopting flat-bottom contact wires,optimizing the joint parameters and layout of the anchor section,emphasizing dynamic detection and adjustment in the early stage of operation,adopting local wear-resistant auxiliary devices,and optimizing train traction strategies.These suggestions will contribute to improving the service level of the rigid suspension overhead contact system and ensuring the safe,economical,and efficient operation of rail transit.

关 键 词：轨道交通 刚性悬挂接触网 弓网磨耗 改善建议 

分 类 号：U226.8[交通运输工程—道路与铁道工程] U269.6[机械工程—车辆工程]