单链形悬挂接触网刚度分布对弓网受流质量影响  

Influence of Stiffness Distribution of Single Chain Suspension Catenary on Pantograph Catenary Current Collection Quality

作　　者：张宗芳 Zhang Zongfang(Xian Railway Vocational and Technical Institute,Xian,Shaanxi 710026,China)

机构地区：[1]西安铁路职业技术学院机电工程学院铁道车辆教研室,陕西西安710026

出　　处：《西安轨道交通职业教育研究》2021年第4期21-27,共7页Xi'an Rail Transit Vocational Education Research

摘　　要：受轮轨和空气激扰的影响,提高列车行驶速度会使受电弓的振动与接触线波动加剧,弓网受流质量恶化。为了对弓网接触压力特性进行研究,本文采用有限元分析法,利用MSC.marc软件建立接触网模型和多体受电弓模型,对接触网和受电弓耦合运动特性进行仿真计算。首先分析了接触网刚度分布与接触压力的关系,得知弓网间接触压力的大小及其变化与接触网刚度大小和曲率相关。然后分别讨论了线索张力对接触网的刚度以及弓网接触压力的影响。最后,对列车运行时速为500km/h时接触网设计参数进行优化,即增大接触线张力,减小承力索张力,可以有效的改善弓网受流质量。Under the influence of wheel rail and air disturbance,increasing the train speed will aggravate the vibration and contact line fluctuation of pantograph and deteriorate the current collection quality of pantograph and catenary.In order to study the contact pressure characteristics of pantograph and catenary,the catenary model and multi-body pantograph model are established by using finite element analysis method and msc.marc software,and the coupling motion characteristics of catenary and pantograph are simulated and calculated.Firstly,the relationship between catenary stiffness distribution and contact pressure is analyzed.It is known that the magnitude and variation of contact pressure between pantograph and catenary are related to catenary stiffness and curvature.Then the effects of the tension on the stiffness of the catenary and the contact pressure of the pantograph catenary are discussed.Finally,the catenary design parameters are optimized when the train speed is 500km/h,that is,increasing the catenary tension and reducing the catenary tension can effectively improve the pantograph catenary current collection quality.

关 键 词：接触网 受电弓 接触压力 刚度 优化 

分 类 号：U225.3[交通运输工程—道路与铁道工程]