车辆工程毕业设计14CA1040轻型货车驱动桥设计

黑龙江工程学院本科生毕业设计I本科学生毕业设计CA1040轻型货车驱动桥设计学院名称：汽车与交通工程学院专业班级：车辆工程学生姓名：指导教师：职称：实验师黑龙江工程学院本科生毕业设计II摘要驱动桥位于传动系末端，其基本功用是增矩、降速，承受作用于路面和车架或车身之间的作用力。它的性能好坏直接影响整车性能，而对于载重汽车显得尤为重要。轻型货车在商用货运汽车生产中占有很大的比重，为满足目前当前载货汽车的高速度、高效率、高效益的需要，必须要搭配一个高效、可靠的驱动桥。因此设计出结构简单、工作可靠、造价低廉的驱动桥，能大大降低整车生产的总成本，推动汽车经济的发展，并且通过对汽车驱动桥的学习和设计实践，可以更好的学习并掌握现代汽车设计与机械设计的全面知识和技能，所以本课题设计一款结构优良的轻型货车驱动桥具有一定的实际意义。驱动桥设计应主要保证汽车在给定的条件下具有最佳的动力性和燃油经济性。本设计根据给定的参数，按照传统设计方法并参考同类型车确定汽车总体参数，再确定主减速器、差速器、半轴和桥壳的结构类型，最后进行参数设计并对主减速器主、从动齿轮、半轴齿轮和行星齿轮进行强度以及寿命的校核。驱动桥设计过程中基本保证结构合理，符合实际应用，总成及零部件的设计能尽量满足零件的标准化、部件的通用化和产品的系列化及汽车变型的要求，修理、保养方便，机件工艺性好，制造容易。关键词：驱动桥；单级主减速器；差速器；半轴；桥壳黑龙江工程学院本科生毕业设计IIIABSTRACTDriveaxleisattheendofthepowertrain,anditsbasicfunctionisincreasingthetorqueandreducingthespeed,bearingtheforcebetweentheroadandtheframeorbody.Itsperformancewillhaveadirectimpactonautomobileperformance.Becauseusingthebigpowerenginewiththebigdrivingtorquesatisfiedtheneedofhighspeed，heavy-loaded，highefficiency，highbenefittoday’heavytruck，mustexploitingthehighdrivenefficiencysinglereductionfinaldriveaxleisbecomingtheheavytruck’developingtendency.Becauseusingthebigpowerenginewiththebigdrivingtorquesatisfiedtheneedofhighspeed,heavy-loaded,highefficiency,highbenefittoday`truck,mustexploitingthehighdrivenefficiencysinglereductionfinaldriveaxleisbecomingthetrucks’developingtendency.Designasimple,reliable,lowcostofthedriveaxle,cangreatlyreducethetotalcostofvehicleproduction,andpromotetheeconomicdevelopmentofautomobileandautomotivedriveaxleofthestudyanddesignpractice,canbetterlearnandtomastermodernautomotivedesignandmechanicaldesignofacomprehensiveknowledgeandskills,sothetitleofthefinestructureofthedesignofapickupvehicledriveaxlehasacertainpracticalsignificance.Accordingtothedesignparametersgiven,firstlydeterminetheoverallvehicleparametersinaccordancewiththetraditionaldesignmethodsandreferencethesamevehicleparameters,thenidentifythemainreducer,differential,axleandaxlehousingstructuretype,finallydesigntheparametersofthemaingear,thedrivengearofthefinaldrive,axlegearsandspiralbevelgearandcheckthestrengthandlifeofthem.Indesignprocessofthedriveaxle,weshouldensureareasonablestructure,practicalapplications,thedesignofassemblyandpartsasmuchaspossiblemeetingrequirementsofthestandardizationofparts,componentsandproducts’universalityandtheserializationandchange,convenienceofrepairandmaintenance,goodmechanicaltechnology,beingeasytomanufacture.Keywords:Driveaxle;Singlereductionfinaldrive;Differential;Axle;DriveAxlehousing黑龙江工程学院本科生毕业设计IV目录摘要………………………………………………………………………………………ⅠAbstract………………………………………………………………………………Ⅱ第1章绪论.......................................................................................................11.1论文研究的背景及意义...........................................................................................11.2国内外研究现状.......................................................................................................21.2.1国外研究现状.................................................................................................21.2.2国内研究现状.................................................................................................31.3设计的主要内容.......................................................................................................4第2章驱动桥总体方案设计..........................................................................52.1汽车车桥的种类.......................................................................................................52.2驱动桥的种类...........................................................................................................52.2.1非断开式驱动桥.............................................................................................52.2.2断开式驱动桥.................................................................................................62.3多驱动桥的布置.......................................................................................................62.4驱动桥的设计要求...................................................................................................72.5设计车型参数...........................................................................................................72.6主减速器方案...........................................................................................................82.6.1主传动比0i的确定..........................................................................................82.6.2主减速器的齿轮类型.....................................................................................92.6.3主减速器的减速形式...................................................................................102.6.4主减速器主从动锥齿轮的支撑方案...........................................................112.7差速器结构方案的确定.........................................................................................122.8半轴形式的确定.....................................................................................................132.9桥壳形式的确定.....................................................................................................142.10本章小结.........................................................................