摘要
为研究气动特性与轨道不平顺作用下受电弓—接触网的动力学动态特性,基于受电弓—车体有限体积模型、车体—轨道动力学模型与弓网耦合动力学模型,分析多种工况下弓网耦合特性。研究结果表明,弓网接触力通常表现为开口运行方向大于闭口运行方向,开口运行时接触力最大值较闭口运行大1.14%~11.51%,接触力均值较闭口运行大1.29%~7.69%,弓网接触力在不同跨内呈现相同且有规律的周期变化,通常在吊弦与定位点后出现峰值,建议在接触网养护维修阶段定期检查吊弦与定位点处的接触线磨损情况。
In order to investigate the dynamic characteristics of pantograph-catenary coupling under the influence of aerodynamic properties and track irregularities,finite volume models were established for the pantograph-car body,as well as models for car body-track dynamics and pantograph-catenary coupling.The coupling characteristics of the pantograph-catenary system under various operating conditions were analyzed.The results show that the contact force between the pantograph and catenary typically exhibits a greater magnitude in the open operating direction compared to that in the closed operating direction.Specifically,it was found that the maximum contact force in the open operating direction was 1.14%to 11.51%larger than that observed in closed operation,while the average contact force was 1.29%to 7.69%greater than its counterpart in closed operation.Furthermore,it was observed that contact forces display consistent and periodic variations across different spans,generally peaking after both droppers and fixing points.Therefore,it is recommended that regular inspections of wear on the contact line at droppers and fixing points be conducted during maintenance phases of overhead contact wire systems.
作者
陈云龙
赵奇
徐风远
张骞
CHEN Yun-long;ZHAO Qi;XU Feng-yuan;ZHANG Qian(College of Mechanical and Electrical Engineering,Qingdao University,Qingdao 266071,China;National Engineering Laboratory for High-speed Train System Integration,CRRC Qingdao Sifang Co.,LTD.,Qingdao 266111,China)
出处
《青岛大学学报(自然科学版)》
2025年第2期36-45,共10页
Journal of Qingdao University(Natural Science Edition)
基金
山东省自然科学基金(批准号:ZR2019PEE011)资助。
关键词
弓网耦合
弓网接触力
轨道不平顺
气动特性
pantograph and catenary coupling
contact force of pantograph and catenary
track irregularity
aerodynamic characteristics
