受电弓-接触网系统的总平均抬升力研究  

Study on Uplift Force of Pantograph / Cantenary System

作　　者：仲伟广 梅桂明[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《高速铁路技术》2013年第6期14-18,共5页High Speed Railway Technology

基　　金：十一五国家科技支撑计划(2009BAG12A05);牵引动力国家重点实验室开放课题项目(ZZ2011001);中央高校基本科研业务费专题研究项目(SWJTU11CX074)

摘　　要：总平均抬升力指弓头不与接触网接触时所测得的垂向力,该力的大小等于静态力与在给定的弓头高度与速度下由空气产生的气动力之和。在列车的实际运行中,受电弓与接触网间的垂向相互作用力的大小与总平均抬升力基本一致;因此,对总平均抬升力的研究能反应弓网间的实际服役状态,为受电弓服役中抬升力的选择作参考。文章基于多体系统动力学的方法,建立了受电弓质量块模型与弹性体接触网的耦合动力学模型,分析了仿真速度、总平均抬升力对弓网系统动态接触压力的影响,并给出了比较理想的总平均抬升力数值。结果表明:弓网间的动态接触压力并不会随着仿真速度的变大而呈现出严格的恶化趋势;相同速度下,随着总平均抬升力的变大,仿真所得接触力的最大值、最小值、标准差呈现变大的趋势;通过对仿真数据的分析,得出总平均抬升力取值120 N比较合理。Total mean uplift force implies the vertical force tested when the pan-head do not contact with catenary, the value of the total mean uplift force is equal to the sum of static force and aerodynamic cased by the height of pantograph and the speed of the vehicle. In service status of pantograph and catenary systems, the value of vertical force from interacting of pantograph and catenary is equal to the total uplift force; so the research of total uplift force is closer to the service status of pantograph and catenary systems, and the result can be the reference to the choice of uplift force of the pantograph. Modeling the pantograph-catenary system dynamics based on the Multi-body method, and analyzing the effect of speed and total mean uplift force on the dynamic contact force in the simulation of pantograph-catenary system dynamics, showing that： With the higher speed of the simulation, the contact force between pantograph and catenary does not become worse strictly; With total mean uplift force becoming larger, the maximum, minimum and standard deviation of dynamic contact force will become larger too; It is suitable to define the value of total mean uplift force as 120N through the analysis of the date obtained in the dynamic simulation.

关 键 词：抬升力 受电弓 动力学 接触网 

分 类 号：U225.1[交通运输工程—道路与铁道工程]