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毕业设计说明书论文作者学号院系部机械工程学院专业机械设计制造及其自动化（机械电子工程）题目保洁车（发动机、车架、车轮、总装）指导者讲师评阅者2007年6月南京毕业设计说明书（论文）中文摘要发动机是汽车的中枢。保洁车采用的是直列四缸汽油发动机，其结构简单、维修方便、造价低廉、工作可靠、宽度小、易布置。冷却方式采用风冷，系统简单、维修简便，与水冷相比，省去了消耗铜材的水箱。摩擦式离合器其工作原理是在动力传递路线上的输出和输入端设计有主动和从动两块摩擦盘，通过摩擦盘的结合来控制动力的传导和切断。发动机产生的转矩在实际使用的转速范围内几乎没有变化，所以当起步或上坡时，可通过大幅度降低转速来增加转矩，发挥这种作用的装置就是变速器。对称式锥齿轮普通差速器由行星齿轮、半轴齿轮、行星齿轮轴和速器壳等组成，是一个差速传动机构，用来保证各驱动轮在各种运动条件下的动力传递，避免轮胎与地面间的打滑。关键词发动机离合器变速器差速器毕业设计说明书（论文）外文摘要TitleCleaningVehicleAbstractEngineisthecenterofautomobile.Theinsurecleanvehicletoadoptisthe4straightrowgasolineenginesofbigjar,itsstructureissimple,maintenanceconvenienceandcostarecheap,workisreliable,widthislittle,easytoarrange.Itisaircooling,systemissimple,hassimpletoservice,andiswatercoolingtocompare,economizeconsumesthewatertankofcoppermaterial.Itsfrictiontypeclutchworkingprincipleiswhenpowertransmitstheexportandinputenddesignonroutehaveisactiveanddrivenmovetwopiecesoffrictionplate,theconductthatpassesthroughthecombinationoffrictionplatetocontrolpowerandcutoff.Inthescopeofrotationalspeedandthattorqueusesinrealitythatengineproducesdonotchange,sowhenstartorgotoslope,theinstallationthatmayincreasetorquethroughreducingrotationalspeedsubstantiallyandplaysthisequipmentistransmission.Thesymmetricaltypeordinarydifferentialhavebevelgearisabadfastmaintransfermachinerybythecompositionssuchasplanetgear,thegearofaxleshaft,axesofplanetgearanddifferentialshell,transmitsusedforthepowertoguaranteethathostwheelmotivitytransfereachinvariousdriveconditions,avoidsthattheskidbetweentyreandground.KeywordsEngineClutchTransmissionDifferential目录第一章绪论...........................................................11.1课题背景.........................................................11.1.1保洁车简介...................................................11.1.2保洁车的组成.................................................11.2课题相关研究.....................................................11.3课题意义及本文主要工作...........................................21.3.1选题的意义...................................................21.3.2本文主要工作及结构...........................................2第二章汽车草图布置..................................................32.1搜集和绘制有关总成部件的外形图...................................32.2基准线的选择及其画法.............................................32.2.1车架上平线...................................................32.2.2前轮中心线...................................................32.2.3汽车中心线...................................................32.2.4地面线.......................................................32.2.5前轮铅垂线...................................................32.3车厢及驾驶室的布置...............................................42.4垃圾箱布置.......................................................5第三章汽车主要参数的选择...........................................63.1汽车主要尺寸参数的选择...........................................63.1.1轴距L........................................................63.1.2前、后轮距B1与B2............................................63.1.3汽车外轮廓尺寸...............................................63.1.4汽车的前悬FL和后悬RL........................................73.2汽车质量参数的确定...............................................73.2.1汽车的装载量Gm...............................................7
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