摘要
为研究地铁车辆的动力学性能,分析了径向机构的导向原理,建立了传统、自导向、迫导向3种地铁车辆动力学模型,并根据车轮滚动接触疲劳损伤模型对车辆通过曲线时的车轮损伤进行计算。计算结果表明:车辆径向机构加强了车辆部件间的连接,优化了车辆稳定性及横向平稳性的指标;迫导向车辆在曲线运行时具有较大优势,且各项评价指标均优于自导向车辆;3种车辆模型运行于相同线路时,迫导向车辆车轮损伤值最小,在曲线半径为300 m时仅为传统地铁车辆车轮损伤的21%,自导向车辆与传统车辆的车轮损伤较大,且随着曲线半径的增大自导向车辆车轮损伤小于传统车辆。地铁车辆安装迫导向机构可以有效地减小轮轨间作用力,减缓车轮损伤。
In order to study the dynamic performance of metro vehicles, the steering principle of radial mechanism was analyzed, three dynamic models of metro vehicles were established, which were traditional, self-steering and forced-steering and according to the wheel rolling contact fatigue damage model, the wheel damage of vehicle passing curve was calcalated. The results showed that the radial mechanism of the vehicle strengthened the connection between the vehicle components and optimized the stability and lateral smoothness of the vehicle, the forced-steering vehicle had a greater advantage in curve operation, and all the evaluation indexes were better than the self-steering vehicle. When the three vehicle models run on the same line, the wheel damage of the forced-steering vehicle was the smallest, which was only 21% of the traditional metro vehicle wheels when the curve radius was 300 m. The damage of the self-steering vehicle and the traditional vehicle wheels was greater, and the damage of the self-steering vehicle wheels was less than the traditional vehicle wheels with the increase of the curve radius. So, the installation of forced steering mechanism for metro vehicles could effectively reduce the wheel rail interaction force and reduce wheel damage.
作者
李金城
丁军君
杨阳
吴朋朋
李芾
LI Jincheng;DING Junjun;YANG Yang;WU Pengpeng;LI FU(School of Mechanical Engineering,Southwest Jiaotong University,Chengdu,Sichuan 610031,China;China Railway Materials Track Technology Service Co.,Ltd.,Beijing 100036,China)
出处
《机车电传动》
北大核心
2019年第1期98-103,108,共7页
Electric Drive for Locomotives
基金
国家重点研发计划项目(2016YFB1200501)
关键词
地铁车辆
导向机构
径向转向架
动力学性能
车轮损伤
metro vehicle
steering mechanism
radial bogies
dynamic performance
wheel damage
