黑龙江工程学院本科生毕业设计摘要变速器是汽车重要核心部件，传动系更是汽车不可分割的一部分。其作用是在原地爬坡、起步、转弯、加速各种行驶的工况之下，使汽车获得不同的牵引力及速度，同时使发动机处在最有利的工况范围内工作运转。手动机械式变速器是传统的汽车传动系统，由于其结构简单、体积小、制造成本不高、便于装配以及修理，传动效率高等优点，一直沿用至今。变速器的性能已经直接体现出整车性能的高低，尤其是燃油经济性的好坏。所以变速器的设计质量的好坏一直是汽车行业竞争的焦点。随着汽车工业的发展，并且要求变速器具有较小的尺寸以及良好性能。本设计在给定QL1040发动机输出转矩、转速及最高车速、最大爬坡度等条件下，着重对变速器齿轮的结构参数、轴的结构尺寸等进行设计计算。并在CAD，UG软件平台上，对相关零部件进行二维，三维模型创建。关键词：轻型货车；变速器；齿轮；同步器；轴；设计；UG。ABSTRACT黑龙江工程学院本科生毕业设计Asthetransmissionsystemoftheimportantcoreoftheautomobile,transmissionisaninseparablepartoftheautomobile.thepurposeisanearthtostartandclimbvariousconditionthatdroveworks,suchasascent,turnandacceleration...etc.atfirstdown,makedifferenttravtiveforceofautocaracquisitionandvelocity,maketheengineworkinthemostbeneficialworkconditionrangeatthesametime.Mechanicaltransmissionisatraditionalmanualtransmissioncar,becauseofitssimplestructure,smallsize,lowmanufacturingcost,easeofassemblyandrepair,hightransmissionefficiency,arestillinuse.Transmissionperformanceofthevehicledirectlyreflectsthelevelofperformance,especiallyfueleconomyisgoodorbad.Therefore,thedesignoftransmissionqualityhasbeenthefocusofcompetitionintheautomotiveindustry.Alongwiththedevelopmentoftheautomobileindustry,thetrendofcartransmissiondesigningistoincreaseitstransmissionpoweranddecreseitsweight,andhopehavesmallersizeandexcellentperformance.InconditionsthatknowingtheQL1040engineoutputtorque,speedofengineandmaximumspeedofvehicles,maximumdegree,focusonthedesigningoftransmissiongearstructuralparameters,axisgeometrydesigncomputation;aswellasthetransmissionanddriveprogramstructuredesign。UsingCAD,UGsoftware,therelevantpartsfortwo-dimensional,three-dimensionalmodelcreated。Keywords:lighttruck;transmission;gear;synchronization;shaft;design;UG。目录摘要....................................................................1Abstract...............................................................1第1章变速器传动方案确定..........................................11.1目的意义....................................................11.2国内外现状研究............................................21.3研究的基本内容拟解决的主要问题..............................21.4变速器的设计要求............................................3黑龙江工程学院本科生毕业设计第2章变速器传动方案确定..........................................42.1变速器传动机构分析............................................52.2倒档布置方案..................................................62.3变速器操纵机构................................................72.3.1远距离操纵手动换挡变速器...................................72.3.2直接操纵式手动换挡变速器...................................72.3.3直接换挡变速器............................................172.4典型的操纵机构及互锁装置......................................72.4.1换挡机构...................................................82.4.2防脱档设计.................................................82.5零、部件结构方案分析..........................................92....
