高速列车新型齿轮箱箱体强度仿真与试验研究

发布时间：2018-02-03 10:46

本文关键词： 高速列车新型齿轮箱箱体强度仿真模态分析试验研究　出处：《北京交通大学》2017年硕士论文　论文类型：学位论文

【摘要】：高速列车齿轮箱组成承载传递整车牵引力和制动力,是转向架关键承力旋转部件,其可靠性直接影响列车的运行安全和旅客的生命财产安全。目前,国内四个平台动车组用齿轮箱技术参数、结构尺寸等顶层指标差异大;齿轮箱组成结构复杂,运行环境恶劣,在长期服役过程中曾发生过箱体裂纹、轴承失效、润滑油乳化和漏油等故障。基于上述背景,本文主要研究中国标准动车组新型齿轮箱箱体结构设计、强度仿真,对新型箱体进行实验台试验和线路测试,具体内容如下:(1)梳理既有高速动车组齿轮箱箱体故障原因。基于失效箱体的断口金相分析、强度模态仿真分析和线路动应力测试,从齿轮箱结构设计、工艺制造、质量管控及线路运营环境等方面分析失效原因。(2)进行新型齿轮箱箱体结构设计、强度及模态仿真分析。按高速列车齿轮箱组成统型互换要求,利用CATIA软件进行箱体结构优化设计,研究箱体与构架、车轴、联轴节接口,关注齿轮箱吊杆安装座、油位视窗和观察孔等部位详细结构;利用Hyper Mesh软件重点优化齿轮箱吊杆安装座和油位视窗;利用ANSYS有限元对箱体进行静强度和疲劳强度仿真分析,以保障箱体结构强度安全可靠,进行模态仿真分析,以掌握其固有振动特性。(3)进行新型齿轮箱实验台静强度及模态测试研究。在实验台上对新型齿轮箱箱体进行短路扭矩测试,对关键部位进行应力测试,验证齿轮箱箱体强度,对箱体和齿轮箱组成在自由状态下的模态频率测试,研究其振动特性。(4)进行新型齿轮箱箱体线路强度测试和振动特性研究。基于有限元分析和实验台测试结果,制定新型箱体动应力和加速度测试方案,进行线路测试,对测试数据进行时域和频域特性分析,评估箱体使用寿命。上述研究工作对研制具有自主知识产权的高速列车新型齿轮箱组成,实现自主化生产具有重要意义。
[Abstract]:The gearbox of high-speed train is the key component of bogie, which is composed of carrying and transmitting traction and braking force. Its reliability directly affects the safety of train and the safety of passenger's life and property. At present. The technical parameters of gearbox and the structural size of the top layer indexes of the four platforms EMU in China are quite different. The gearbox has complicated structure and bad operating environment. There have been some faults such as box crack, bearing failure, lubricating oil emulsification and oil leakage during the long service. Based on the above background. This paper mainly studies the structure design and strength simulation of the new type gear box box of the Chinese standard EMU, and carries on the test bench test and the circuit test to the new type box body. The main contents are as follows: 1) combing the fault causes of the existing high-speed EMU gearbox box. Based on the fracture metallographic analysis, strength modal simulation analysis and line dynamic stress test, the gearbox structure is designed from the gearbox structure. The structural design, strength and modal simulation analysis of the new type of gearbox box are carried out according to the requirements of high-speed train gearbox system. The optimal design of the box structure is carried out by using CATIA software. The interface between the box and the frame, the axle, the coupling joint, the installation seat of the suspender of the gear box, the oil level window and the observation hole are studied. The Hyper Mesh software is used to optimize the gearbox hanger mounting seat and oil level window. The static strength and fatigue strength of the box are simulated by ANSYS finite element method to ensure the structural strength of the box is safe and reliable, and the modal simulation analysis is carried out. In order to master its inherent vibration characteristics, the static strength and modal test of the new type gearbox test bench are studied. The short-circuit torque of the new type gearbox box is tested on the test bench, and the stress of the key parts is tested. The strength of the gearbox box is verified, and the modal frequency of the box and the gearbox composition in the free state is tested. Based on the finite element analysis and the test results of the test bench, a new type of dynamic stress and acceleration test scheme was developed. Through line testing, the time-domain and frequency-domain characteristics of the test data are analyzed to evaluate the service life of the box. The above research work is composed of the development of a new type gearbox of high-speed train with independent intellectual property rights. It is of great significance to realize autonomous production.
【学位授予单位】：北京交通大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U270.33

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