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1、重型自卸汽车设计（驱动桥总成设计）摘要驱动桥作为汽车四大总成之一，它的性能的好坏直接影响整车性能，对于重型自卸汽车也很重要。驱动桥位于传动系的末端，它的基本功用是将传动轴或变速器传来的转矩增大并适当减低转速后分配给左、右驱动轮，另外还承受作用于路面和车架或车身之间的垂直力，纵向力和横向力。通过提高驱动桥的设计质量和设计水平，以保证汽车良好的动力性、安全性和通过性。此次重型自卸汽车驱动桥设计主要包括：主减速器、差速器、轮边减速器、车轮传动装置和驱动桥壳进行设计。主减速器采用中央减速器附轮边减速器的形式，且中后桥采用双级贯通式布置形式，国内外多桥驱动的重型自卸汽车大多数采用这种布置形式；本设计
2、主减速器采用了日益广泛应用的双曲面齿轮；差速器设计采用普通对称圆锥行星差速器；车轮传动装置采用全浮式半轴；驱动桥壳采用整体型式；并对驱动桥的相关零件进行了校核。本文驱动桥设计中，利用了CAD绘图软件表达整体装配关系和部分零件图。关键词：驱动桥、主减速器、差速器、半轴、双曲面齿轮全套图纸，加IIITHEDESIGNOFHEAVYSELFUNLOADINGTRUCK(THEDESIGNOFTRANSAXLEASSEMBLY)ABSTRACTDriveaxleistheoneofautomobilefourimportantassemblies.It’sperformancedirectlyin
3、fluencesontheentireautomobile，especiallyfortheheavyselfunloadingtruck.Drivingaxlesetattheendofthetransmissionsystem.Thebasicfunctionofdrivingaxleistoincreasethetorquetransportedfromthetransmissionshaftortransmissionanddecreasethespeed,thendistributeittotheright、leftdrivingwheel,anotherfunctionisto
4、beartheverticalforce、lengthwaysforceandtransversalsforcebetweentheroadsurfaceandthebodyortheframe.Inordertoobtainagoodpowerperformance,safetyandtrafficabilitycharacteristic,engineersmustpromotequalityandlevelofdesignDrivingaxledesignoftheheavyselfunloadingtruckmainlycontains:mainreduction,differen
5、tial,wheelborderreduction,transmittedapparatusofwheelandthehousingofdrivingaxle.Themainreduceradoptscentralreductionalongwithwheelborderreduction.Andalsothedesignhavethesamerun-throughstructurebetweenmiddletransaxleandtherearonewithheavytruckshomeandabroadthathaveseveraltransaxles.Hypoidgear,anewt
6、ypegearisagoodchoiceforthemainreducerofheavyselfunloadingtruck.Thedifferentialadoptedacommon,symmetry,taper,planetgear.Transmissionapparatusofwheeladoptedfullfloatingaxleshaft,andthehousingofdrivingaxleadoptedthewholepattern,andproofreadinterrelatedparts.Duringthedesignprocess,CADdraftingsoftwarei
7、susedtoexpressesthewholestoassemblerelationshipandpartdrawingbydrafting.Keywords：drivingaxle,themainreducer，differential,wheelborderIIIreduction,halfshaft,hypoidgearIII目录第一章绪论1§1.1驱动桥简介1§1.2驱动桥设计的要求1第二章驱动桥的结构方案分析
