高速动车组轴箱轴承可靠性试验台动态加载系统设计研究
杜洪军1梁娜2郑晓波3刘冠男1卢秉正1
Design and Research of Dynamic Loading System for High-speed EMU Axle Box Bearing Reliability Test Bench
DU Hongjun1LIANG Na2ZHENG Xiaobo3LIU Guannan1LU Bingzheng1
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作者信息:1.中车长春轨道客车股份有限公司，130062，长春
2.国家铁路局安全技术中心安全评价研究所，100891，北京
3.中国国家铁路集团有限公司，100844，北京
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Affiliation:1.CRRC Changchun Railway Vehicles Co., Ltd., 130062, Changchun, China
2.Safety Evaluation Research Institute, Safety Technology Center, National Railway Administration of the People′s Republic of China, 100891, Beijing, China
3.China State Railway Group Co., Ltd., 100844, Beijing, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2024.08.052
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中图分类号/CLCN:U270.1+4
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栏目/Col:应用技术
摘要:
［目的］台架试验是研究高速动车组轴箱轴承性能的主要技术手段，而准确模拟轴箱轴承的实际运行载荷工况是获取真实、可靠的轴箱轴承性能数据的必要前提。合理设计轴箱轴承试验台，以模拟轴箱轴承高速重载的运转工况；设计径向加载机构和轴向加载机构控制策略，以满足加载系统控制精度和响应速度的要求。［方法］设计了一套高速动车组轴箱轴承可靠性试验台电液伺服动态加载系统。介绍了该系统中轴向加载系统和径向加载系统的结构组成及工作原理，并提出了一种模糊PID(比例-积分-微分)控制算法。搭建轴箱轴承可靠性分析试验台，进行加载性能测试和轴箱轴承可靠性测试试验，用以验证动态加载系统的合理性。［结果及结论］所设计的电液伺服动态加载系统能够满足轴箱轴承可靠性试验的加载要求；轴向加载响应时间为0.276s，轴向加载稳态误差为0.339kN，径向加载稳态误差为1.742kN，满足EN12082：2017标准要求。
Abstracts:
［Objective］ Bench test is a primary technical means for studying the performance of high-speed EMU (electric multiple units) axle box bearings. Accurately simulating the practical operational load conditions of axle box bearings is essential for obtaining authentic and reliable performance data. A test bench for axle box bearings is reasonably designed to simulate the high-speed, heavy-load operational conditions. Control strategies for radial and axial loading mechanisms are developed to meet the requirements for control precision and response speed of the loading system. ［Method］ A dynamic loading system with electro-hydraulic servo is designed for the high-speed EMU axle box bearing reliability test bench. The structural composition and working principles of the axial and radial loading systems within this setup are introduced and a fuzzy-PID (proportional-integral-derivative) control algorithm is proposed. The axle box bearing reliability analysis test bench is constructed to conduct loading performance tests and axle box bearing reliability testing, thereby validating the rationality of the dynamic loading system. ［Result & Conclusion］ Test results indicate that the designed electro-hydraulic servo dynamic loading system meets the loading requirements for axle box bearing reliability test. The axial loading response time is 0.276 s, the axial loading steady-state error is 0.339 kN, and the radial loading steady-state error is 1.742 kN, all of which satisfy requirements specified in the EN 12082:2017 standards.
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