基于线路跟踪试验的地铁车辆转向架服役性能研究
杨利强1杨陈2李龙涛2
In-service Performance of Metro Vehicle Bogies Based on Line-tracking Tests
YANG Liqiang1YANG Chen2LI Longtao2
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作者信息:1.徐州地铁集团有限公司， 220009， 徐州
2.中车南京浦镇车辆有限公司， 210032， 南京
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Affiliation:1.Xuzhou Metro Group Co., Ltd., 220009, Xuzhou, China
2.CRRC Nanjing Puzhen Co., Ltd., 210032, Nangjing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.20241560
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中图分类号/CLCN:U279.3
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栏目/Col:车辆制造与列车控制
摘要:
［目的］随着城市轨道交通的发展，地铁线路不断扩增，地铁车辆转向架的服役环境日益复杂，这对转向架的运行安全性和可靠性提出了新的要求，因此有必要研究地铁车辆转向架在复杂环境下的实际服役性能。［方法］选取深圳某条地铁线路的车辆转向架为研究对象，对其进行长期服役性能研究。通过全方位的线路跟踪试验，针对各种工况下的试验线路和试验条件，在一个镟轮周期内进行了多次测试。系统地收集了地铁车辆转向架在实际运行条件下的车轮状态、动力学性能、结构强度和振动特性，获得了车轮径跳分布、车轮不圆特征、等效锥度、滚动圆磨耗量等的演变趋势。通过布置测点，获取了转向架的振动加速度测试数据，并结合其车轮状态数据综合分析了转向架动力学性能的演变规律。通过在构架上布置8个关键动应力测点，分别对空载和高峰时期载客运行这2类工况下的关键位置动应力变化展开了观测。［结果及结论］因车轮径跳对车轮影响最大，须加强对车轮径跳的定期监测。电机吊座对接焊缝部位属于较危险位置，须对其定期监测维护。
Abstracts:
［Objective］ With the continuous development of urban rail transit and the ongoing expansion of metro lines, the service environment for metro vehicle bogies is becoming increasingly complex. This poses new challenges to the operational safety and reliability of bogies. Therefore, it is necessary to study the actual in-service performance of metro vehicle bogies under complex conditions. ［Method］ The vehicle bogies of a Shenzhen Metro line are selected as the research object and their long-term in-service performance study is carried out. Comprehensive line-tracking tests are conducted targeting test lines and test scenarios under various working conditions, with multiple rounds of testing performed within a single wheel reprofiling cycle. Data are systematically collected on wheel conditions, dynamics performance, structural strength, and vibration characteristics of metro vehicle bogies under real operation conditions. Trends for wheel radial runout distribution, wheel out-of-roundness characteristics, equivalent conicity, and rolling circle wear are obtained. Vibration acceleration test data of bogies are acquired by placing test points, and the dynamics performance evolution law of bogies is comprehensively analyzed in conjunction with the wheel condition data. Additionally, eight key dynamic stress measurement points are arranged on the bogie frame to observe changes in critical stress locations under the unloaded and the peak passenger load two operating conditions. ［Result & Conclusion］ Since wheel radial runout has the greatest impact on wheels, periodic monitoring of wheel radial runout should be strengthened. The weld joint at the motor suspension bracket is identified as a high-risk location, requiring regular monitoring and maintenance.
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