高速铁路轴承试验台设计研究

发布时间：2018-07-06 21:25

本文选题：高速铁路轴承 + 试验台　；参考：《河南科技大学》2011年硕士论文

【摘要】：高速铁路轴承是铁路车辆重要的行走支承部件,其精度、寿命、可靠性等指标对高铁车辆的性能和安全性起着重要的作用,因此高速铁路轴承各项性能参数须进行试验测试。本文研究的目的是设计一种能够试验高速铁路轴承性能的试验台,该试验台能最大程度地模拟铁路车辆行驶工况,并测试高速铁路轴承的耐久性。主要研究内容如下: 分析了轴承试验台的国内外发展状况,根据高速铁路轴承试验台的功能与技术要求确定了总体设计方案;根据试验台模拟工况的特性完成了试验台的机械系统的设计,其中主要的是被试轴承、主轴、驱动系统等设计,并完成试验台的三维CAD模型设计;根据试验要求,设计出试验台的加载系统;建立了高速铁路轴承试验台主轴的参数化有限元模型,利用有限元分析软件ANSYS对主轴进行了模态分析,初步判定主轴会发生共振,为了避免共振,以提高主轴一阶固有频率、降低主轴重量对主轴结构进行了优化计算,从而确立了支撑轴承的位置,主轴在自重减轻的情况下提高了其一阶固有频率,改善了主轴的动态性能,并且有效地避开了共振区;借助优化后的数据,基于ANSYS对试验台关键零件进行了有限元结构静力学分析,既满足了设计要求,又验证了结构的安全性。
[Abstract]:High speed railway bearing is an important moving supporting part of railway vehicles. Its precision, life, reliability and other indexes play an important role in the performance and safety of high speed railway vehicles. Therefore, the performance parameters of high speed railway bearings must be tested and tested. The purpose of this paper is to design a kind of test bed which can test the performance of high-speed railway bearings. The test bench can simulate the running conditions of railway vehicles to the greatest extent and test the durability of high-speed railway bearings. The main research contents are as follows: the development of bearing test-bed at home and abroad is analyzed, and the overall design scheme is determined according to the function and technical requirements of high-speed railway bearing test-bed; According to the characteristics of the simulated working conditions of the test bed, the design of the mechanical system of the test bed is completed, including the design of the bearing, the spindle, the drive system, and the design of the three-dimensional CAD model of the test bed, according to the requirements of the test, The loading system of the test bed is designed, the parameterized finite element model of the spindle of the high-speed railway bearing test-bed is established, the modal analysis of the spindle is carried out by using the finite element analysis software ANSYS, and it is preliminarily determined that the spindle will resonate, in order to avoid the resonance, In order to increase the first order natural frequency of the spindle and reduce the weight of the spindle, the structure of the spindle is optimized and the position of the supporting bearing is established, and the natural frequency of the first order is improved and the dynamic performance of the spindle is improved when the weight of the spindle is reduced. With the help of the optimized data, the finite element statics analysis of the key parts of the test-bed is carried out based on ANSYS, which not only meets the design requirements, but also verifies the safety of the structure.
【学位授予单位】：河南科技大学
【学位级别】：硕士
【学位授予年份】：2011
【分类号】：TH133.3

【引证文献】