阶跃不平顺下接触刚度对受流质量影响分析
吴旭1，胡俊雄1,2，罗世辉1，马卫华1
（1.西南交通大学 牵引动力国家重点实验室，四川 成都 610031；2.郑州铁路职业技术学院 河南省轨道交通智能安全研究中心，河南 郑州 451460）
摘要：接触轨不平顺直接作用于受流器并影响中低速磁浮列车的受流质量。为研究接触轨不平顺及接触刚度对受流器的动力学响应，本文建立了中低速磁浮列车动力学模型与刚柔耦合靴-轨动力学模型，定义离线率、接触力合格率为受流质量的评价指标，通过仿真计算了阶跃不平顺工况下靴轨接触刚度对受流质量的影响。研究表明：离线率随接触刚度的增加而减小，接触力合格率先随接触刚度的增加而增加，后随接触刚度增加而减小。为保证中低速磁浮列车线路运行时的受流质量，靴轨接触刚度应取1×107 N/m。
关键词：中低速磁浮列车；受流器；靴－轨关系；接触刚度
中图分类号：TH113 文献标志码：A doi：10.3969/j.issn.1006-0316.2021.04.007
文章编号：1006－0316 (2021) 00－0041－07
Influence of Contact Stiffness on Current Collection Quality under the Condition of Step Irregularity
WU Xu，HU Junxiong，LUO Shihui，MA Weihua
( 1.State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China; 2.Henan Engineering Research Center of Rail Transit Intelligent Security, Zhengzhou Railway Vocational & Technical College, Zhengzhou 451460, China )
Abstract：The contact rail irregularity directly affects the current collector and the current collection quality of medium-low-speed maglev train. In order to study the dynamic response of contact rail irregularity and contact stiffness to current collector, this paper establishes a dynamic model of the medium-low-speed maglev train and a dynamic model of rigid-flexible coupled brake shoe and wheel rail. The off-line rate and contact force qualified rate are defined as the evaluation indexes of current collection quality. The influence of brake shoe and wheel rail contact stiffness on current collection quality under the condition of step irregularity is calculated by simulation. The results show that the off-line rate decreases with the increase of contact stiffness, and the contact force qualified rate first increases with the increase of contact stiffness, and then decreases with the increase of contact stiffness. In order to ensure the current collection quality of medium-low-speed maglev train, the contact stiffness should be 1×107 N/m.
Key words：medium-low-speed maglev train；collector；brake shoe-wheel rail relationship；contact stiffness
———————————————
收稿日期：2020－09－24
基金项目：2019河南省轨道交通智能安全工程技术研究中心开放基金（2019KFJJ002）
作者简介：吴旭（1996－），男，四川资阳人，硕士研究生，主要研究方向为车辆系统动力学，E-mail：wuxuwd@163.com；罗世辉（1964－），男，江西赣州人，博士，教授，主要研究方向为车辆系统动力学。
设为首页 | 加入收藏 | 免责条款
《机械》杂志版权所有 Copyright©2008-2012 Jixiezazhi.com All Rights Reserved
电话：028-85925070 传真：028-85925073 E-mail：jixie@vip.163.com
地址：四川省成都锦江工业开发区墨香路48号 邮编：610063
Powered by PageAdmin CMS