某小型SUV循环球式转向器设计

毕业设计（论文）某小型SUV循环球式转向器设计系别：专业名称：学生姓名：学号：指导教师姓名、称：完成日期年月日I某小型SUV循环球式转向器设计摘要汽车不仅仅只是一种简单的运输工具，也是现今人们出行的一种便利的交通工具。伴随人们生活质量也跟着不断的变化，变得越来越好，人们也开始追求物质上的享受。汽车也不再只是富贵人家的象征，它也渐渐走进平常人家，仅仅只是作为一种简单的代步工具。随着汽车的需求越来越大，汽车工业的发展也呈现一种蒸蒸日上的势头，在这样的的大环境下，逐渐造成汽车泛滥，交通拥堵等现象。而伴随着这些现象而来的问题也一时无法得到解决，例如，交通事故也频繁发生，全世界几乎每时每刻都有人因交通事故而死于非命。所以行车安全也成为人们所面临的一个重要问题。该如何有效规避交通事故的发生也成为当今人们所要考虑的问题。首先是我们人为关系，需要每个人共同努力，遵守交通法规；其次汽车本身去解决问题，性能好坏与行车安全也息息相关。例如，转向器，它所起到的作用也是毋庸置疑的。转向器，根据他的名字就很容易看出它的作用是与汽车的转向有关，行车过程中无时无刻没在用着转向器，所以转向器的重要性也就不言而喻了，因此转向系统需要我们去了解和掌握。关键词汽车；安全；转向器；研究；设计；IIDesignofasmallSUVrecirculatingballtypesteeringgearAbstractCarismorethanjustasimplemeansoftransport,isnowaconvenientmeansoftransportation.Withpeople'slivingstandardsalsofollowsconstantlychanging,gettingbetter,peoplealsobegantopursuematerialenjoyment.Carsarenolongerjustrich'ssymbol,itgraduallyintothewarmfamily,justasasimplemeansoftransport.Asthedemandforcarsisgrowing,alsoshowagrowingmomentuminthedevelopmentofautomobileindustry,insuchcircumstances,graduallycausedproliferationofcars,trafficjamsandsoon.Andwiththemcametheproblemcan'tbesolved,forexample,trafficaccidentsalsooccurfrequently,almostallthepeoplewhodiedinatrafficaccident.Trafficsafetyhasbecometheurgentneedtoresolveaproblem.Howtoavoidtrafficaccidentshavebecometheissuestobeconsidered.Firstofall,theindividual,needeveryonetoworktogether,tocomplywithtrafficlaws;secondly,thecaritselftosolvetheproblem,theperformanceiscloselyrelatedtotrafficsafety.Forexample,steeringgearandtheroleitplaysisbeyonddoubt.Steeringgear,accordingtohisname,itiseasytoseethatitisassociatedwiththecar'ssteering,drivingallthetimewithoutusingtheSteering,sotheimportanceofsteeringisself-evident,sosteeringsystemthatweneedtounderstandandmaster.Keywordsautomobile;safety;steeringgear;research;design;III目录1论述................................................................11.1课题研究背景.......................................................11.1.1循环球式转向器................................................11.2国内外研究现状.....................................................11.3研究目的及意义.....................................................11.4循环球式转向器发展前景.............................................21.5本课题研究的难点...................................................21.6研究内容和设计方法.................................................22汽车转向系统.........................................................32.1汽车转向系的类型和组成.............................................32.1.1机械式转向系..................................................32.1.2动力转向系....................................................33转向系设计概述.......................................................43.1转向操纵机构.......................................................43.2转向传动机构.......................................................43.3转向器.............................................................53.4转角及最小转弯半径.................................................54汽车转向器的组成与分类...............................................74.1齿轮齿条式转向器...................................................74.2循环球式转向器.....................................................75转向系的主要性能参数.................................................85.1转向系的效率.......................................................85.1.1转向器的正效率................................................85.1.2转向器的逆效率................................................85.2传动比变化特性.....................................................95.2.1转向系传动比..................................................9IV5.2.2力传动比和角传动比之间的关系.................................105.2.3转向器角传动比的选择.........................................105.3传动副的传动间隙△T...............................................116转向器设计计算......................................................126.1转向系计算载荷的确定..............................................126.2转向器设计........................................................126.2.1参数的选取...................................................126.2.2计算参数....................................................136.3强度计算..........................................................136.3.1钢球与滚道的接触应力.........................................136.3.2转向摇臂直径的确定...........................................147动力转向机构设计....................................................157.1动力转向机构的要求................................................157.2液压式动力转向机构的计算..........................................157.2.1动力缸尺寸计算...............................................157.2.2分配阀的设计.................................................167.3动力转向的评价指标................................................188转向传动机构设计....................................................208.1选材与表面处理....................................................208.2杆件设计结果......................................................20结论..................................................................21致谢................................................................22参考文献..............................................................2311论述1.1课题研究背景我们都知道转向器是汽车零件中不可缺少的一个组成元件，转向器的运作是作为一个减速的装置进行系统的运作。而现在在汽车领域里，循环球式转向器成为了很多汽车的首选。对循环球式转向器的设计以及研究是很有必要，目前全世界各个国家都在大力发展汽车领域，对汽车的投入也越来越大。