基于轮对横移量的货车轮对状态识别研究
Research on Freight Car Wheelset Status Recognition Based on Wheelset Lateral Displacement
刘霄 1曹政祥 2卢小永 3魏来 4彭莘宇5
作者信息
- 1. 中车齐齐哈尔车辆有限公司技术开发中心,辽宁大连 116041
- 2. 中国铁路太原局集团有限公司车辆部,山西太原 030013
- 3. 大秦铁路股份有限公司科学技术研究所,山西太原 030013
- 4. 西南交通大学轨道交通运载系统全国重点实验室,四川成都 610031
- 5. 航空工业成都飞机工业(集团)有限责任公司,四川成都 610092
- 折叠
摘要
铁路重载因其具有较高的经济效益,成为我国铁路货运发展的新方向.轮对故障威胁车辆的安全、平稳运行,有必要对货车轮对状态进行实时监测,实现对车轮状态的预判,保证车辆正常运行、提高维修效率.基于轨边监测装置,对货车轮对横向偏移量进行实时监测,定义轮对横向偏移量并分析其与轮对蛇行失稳的关系,提出基于轮轨横向偏移量的蛇行失稳状态判定方法及限值.通过建立货车-轨道刚柔耦合动力学模型仿真,并对实测数据进行对比分析,研究轮对横向偏移量与轮径差的映射关系,并排除轮对蛇行失稳导致的轮径差反演误差的影响.研究结果表明,通过监测轮对横移量评判车辆的失稳状态并反演轮径差,实现货车轮对状态识别,具有一定的工程应用价值.
Abstract
Railway heavy haul has become a new direction for the development of railway freight transport in China due to its high economic benefits.The faults in wheelsets pose a threat to the safe and smooth operation of vehicles.It is necessary to carry out real-time monitoring of freight car wheelset status to predict the wheel status,ensure normal vehicle operation and improve maintenance efficiency.Based on the trackside inspection device,this paper conducts real-time monitoring of the freight car wheelset lateral displacement,defines the wheelset lateral displacement,analyzes its relationship with wheelset hunting instability,and proposes a method for determining the hunting instability based on the wheel-rail lateral displacement,as well as monitoring limits.By establishing a freight car-track rigid-flexible coupling dynamic model for simulation,and comparing and analyzing the measured data,this paper studies the mapping relationship between wheelset lateral displacement and wheel diameter difference,and eliminates the influence of wheel diameter difference inversion error caused by wheelset hunting instability.The study results indicate that by inspecting the wheelset lateral displacement to assess the vehicle instability status and invert the wheel diameter difference,the freight car wheelset status can be recognized,demonstrating significant engineering application value.
关键词
重载货车/横向偏移量/蛇行失稳/轮径差/状态识别Key words
heavy-haul freight car/lateral displacement/hunting instability/wheel diameter difference/status recognition引用本文复制引用
基金项目
中国国家铁路集团有限公司科技研究开发计划项目(N2022J024)
出版年
2024
NETL
NSTL
万方数据