摘要ECAS(electronic-controlled air suspension)是客车电子控制空气悬架系统的简 称。这种悬架系统主要用于大客车,用来提高车辆在行驶过程中的平顺性。大客车一直 是我们出行的重要交通工具。我国的一些老式客车没有采用空气悬架系统,行驶性能特 别差,坐在车上会感觉到很明显的颠簸。近年来国外的大客车都选用了空气悬架系统, 它能明显的改善客车的行驶性能,越来越多的汽车生产公司开始使用空气悬架系统。就 目前而言,我国正在使用空气悬架的公司一般以进口为主,很难做到可以自己制造。对 此情况,我认为我国客车行业进一步发展的重心应该放在对空气悬架系统的研究,努力 做到可以自主研发。本课题针对大客车空气悬架的导向机构进行设计,以我国现有的大 客车作为技术支持,合理选择导向机构的种类,考虑客车的空间布局,对其进行结构设 计,前空气悬架选择双横臂独立悬架,后悬架选择 V 型四连杆空气悬架。83330
毕业论文关键词:电子控制;空气悬架;导向机构;结构设计
Abstract ECAS is the abbreviation of bus electronic control air suspension system。 The suspension system is mainly used for the bus, which is used to improve the ride comfort of the vehicle in the course of running。 Bus has always been an important means of transportation for our trip。 Some old cars in our country did not use air suspension system, particularly poor performance, sitting in the car will feel very obvious bumps。 In recent years, the large passenger cars have chosen the air suspension system, it can significantly improve the performance of the bus, more and more automobile manufacturers began to use air suspension system。 For now, China is the use of air suspension of the company in general to import based, it is difficult to make their own。 In this case, I believe that the further development of China's passenger car industry should focus on the study of air suspension system, andstrive to achieve independent research and development。 This topic for bus air suspension guiding mechanism design, to our country's existing bus as a technical support, reasonable choice of types of guiding mechanism, considering the spatial layout of the bus, carries on the structural
design,front air suspension to choose the double cross arm independent suspension, after the
suspension of the choice of V type four link air suspension。
Key words: electronic control ;air suspension; guide mechanism; structure design
目 录
第一章 绪论 1
1。1 研究背景 1
1。2。1 空气悬架的技术 3
1。2。2 空气悬架的发展过程和国内外研究成果 3
1。3 研究意义 5
1。4 车型介绍及整车参数 5
第二章 空气悬架的初步设计 7
2。1 空气悬架的设计基本要求 7
2。2 空气悬架的种类 7
2。3 前后悬架的选择 9
2。4 导向机构设计的主要原则 10
第三章 前后导向机构的设计 11
3。1 双横臂独立悬架主要参数确定 11
3。1。1 车轮的定位角 11
3。1。2 横向平面设计计算