• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2019, Vol. 55 ›› Issue (14): 80-87.doi: 10.3901/JME.2019.14.080

• 运载工程 • 上一篇    下一篇

动车组制动盘螺栓载荷测试及疲劳损伤研究

范童柏, 任尊松, 王文静, 王曦, 邹骅   

  1. 北京交通大学机械与电子控制工程学院 北京 100044
  • 收稿日期:2018-06-03 修回日期:2018-11-26 出版日期:2019-07-20 发布日期:2019-07-20
  • 通讯作者: 王文静(通信作者),女,1976年出生,博士,教授,博士研究生导师。主要研究方向为轨道车辆结构强度与可靠性。E-mail:wjwang@bjtu.edu.cn
  • 作者简介:范童柏,男,1993年出生,博士研究生。主要研究方向为轮轨动力学。E-mail:15116354@bjtu.edu.cn;任尊松,男,1969年出生,博士,教授,博士研究生导师。主要研究方向为车辆/轨道系统动力学及结构强度。E-mail:zsren@bjtu.edu.cn
  • 基金资助:
    北京交通大学基本科研基金(M16JB00020)、国家自然科学基金(51575036)和国家重点研发计划(2016YFB1200505-010)资助项目。

Study on Bolt Load Test and Fatigue Damage of Brake Discs of EMU

FAN Tongbai, REN Zunsong, WANG Wenjing, WANG Xi, ZOU Hua   

  1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing 100044
  • Received:2018-06-03 Revised:2018-11-26 Online:2019-07-20 Published:2019-07-20

摘要: 在线运营高速动车组制动盘螺栓的结构可靠性对列车运行安全性有十分重要的影响。在研究高速动车组制动盘螺栓载荷测试技术基础上,在某客运专线,对国内某型高速动车组动轴制动盘螺栓载荷进行5天线路测试,获得制动盘螺栓载荷动态时间历程。测试工况包括正常工况和故障工况,总测试里程为6546 km。抽样分析了电制动、连续空气制动以及紧急制动等工况下的应力特性,给出螺栓一定运用里程下的应力谱以确定幅值、次数与测试里程之间的关系。结合螺栓结构特点和测试分析结果,评估了螺栓不同运行工况下的疲劳强度。结果表明,正常工况下动轴制动盘螺栓载荷无明显变化;故障工况下,动轴制动盘螺栓拉伸载荷、周向弯矩和径向弯矩均有显著提高,且随着空气制动增加,制动热使得制动盘和螺栓温度升高。由于材质和结构的不同,两者膨胀变形存在差异,导致制动盘螺栓应力有较大变化。

关键词: 动车组, 损伤, 载荷, 制动盘螺栓, 制动作用

Abstract: The structural reliability of brake disc bolts of the high speed EMU is important for operation safety. Based on the load test of brake disc bolts of the high speed EMU, there is a five days' test on a certain type of EMU, with the total test mileage of 6 546 km. Under normal working conditions and failure conditions, dynamic characteristics of bolt load of brake discs are obtained, and the fatigue strength assessment under different operation conditions is completed. The characteristics of bolt structure are combined with the test data. The samples of electrical braking, continuous air braking and emergency braking are analyzed, and its operational reliability is estimated. It is shown that the load of the brake discs of the power axle is not obviously changed under normal conditions. Under failure conditions, the load of the brake discs of the power axle is obviously increased. With the increase of air braking, a rise in the temperature of brake discs and bolts is resulted by the fiction heat. Because of the differences of the materials and structures, there are different deformations of brake discs and bolts, which lead to a great change of bolt stress.

Key words: bolts of brake discs, braking action, damage, EMU, load

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