文档介绍：摘要
摆式列车是既有线路提速的有效手段,它以投资少、见效快受到世界各国的广泛重视,既使一些大量采用高速铁路的国家,也在加强摆式列车的研制工作和商业运营。目前,为加速铁路现代化进程,我国正在研制国产摆式列车。
倾摆机构是实现摆式列车车体倾摆,保证列车安全运行的重要部件。本论文对四吊杆式倾摆机构进行了较为深入的研究,进一步分析论证了摆式列车的连接部件一一车钩和风挡装置对倾摆机构的影响。
一/论文首先介绍了摆式列车提速的机理以及国外几种摆式列车倾摆机构的结
构和特点。接着,分析了车体倾摆的运动规律,利用向量法,对四连杆型摆式
列车倾摆机构比较全面、系统地进行了运动学和动力学分析,推导出求取倾摆机构重要参数的理论公式。在此基础上,针对摆式列车的结构特点,建立了多变量多约束多目标的优化模型,对摆式列车倾摆机构的三个重要设计变量进一步进行了优化处理,利用加权系数法和复合形法求得优化模型的最优解。并编制了倾摆机构计算、优化程序。
其次,根据摆式列车用车钩缓冲装黄的结构特点,针对列车通过缓和曲线的实际工况,通过对车辆间车钩力和车钩模型的研究,分析了车钩缓冲装置对
倾摆机构的影响。
最后,分析研究了国内外客车风挡装置的基本型式和结构特点。然后提出了一种用于摆式列车的风挡装置结构方案,并研究了风挡扭转刚度和扭转阻尼对倾摆机构的影响。
在进行倾摆机构优化时,通过对优化方案与原方案的全面比较,认为优化方案要优于原方案。这里,不但通过实际编程计算得到了一组较理想的优化结果,同时也提出了一种进行倾摆机构设计变量优化的可行方法。在对摆式列车
\) 车钩缓冲装置和风挡装置研究的基础上,得出结论:在车体倾摆过程中,车钩
力对倾摆机构的影响很小;风挡扭转刚度和扭转阻尼应控制在一定范围之内j
【关健词】摆式列车倾摆机构运动学动力学结构优化车钩风挡
西南交通大学硕士学位论文
Abstract
The development and application of tilting trains,which are 811 effective means of increasing speeds over existing lines with less investment and quick returns on the investment。are getting more and more attention in the some
’V colmtries that have high—speed railway systems have strengthened their works on this ,China is launching the programs to develop and test tilting trains to speed up the modernization of railway.
The tilting mechanism plays all important role in ensuring the car·body tilting properly and the train running four-bar linkage tilting mechanism is studied thoroughly,and the effect by the coupling and vestibule diaphragm on the tilting mechanism is interpreted in this thesis.
The principle of the tilting ofcar—body as well as the structure and the character of tilting trains abroad are briefly introduced ,by vector method the kinematics and ics of the four-bar linkage tilting mechanism and parameter optimization are studied thoroughly and the formulas that Can be used to get data of the important parametel‘5 when ear—body is tilting are the basis of these works and by seRing up an optimization model wi