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1、汽车后桥是汽车的主耍部件Z-,其基本的功用是增大由传动轴或直接由变速器传来的转矩，再将转矩分配给左右驱动车轮，并使左右驱动车轮具有汽车行驶运动所要求的差速功能:同时，驱动桥述要承受作用于路面和车架或承载车身Z间的铅垂力、纵向力，横向力及其力矩。其质量，性能的好坏直接影响整车的安全性，经济性、舒适性、可靠性。在论述汽车驱动桥运行机理的基础上，提练出了在驱动桥设计屮应掌握的满足汽车行驶的平顺性和通过性、降噪技术的应用及零件的标准化、部件的通用化、产品的系列化等三大关键技术；阐述了汽车驱动桥的基本原理并进行了系统分析；根据经济、适用、舒适、安全可靠的设计原则和分析比较，确定了重型卡车驱
2、动桥结构形式、布置方法、主减速器总成、差速器总成、桥壳及半轴的结构型式。通过本课题的研究，开发设计岀适用于装置大马力发动机重型货车的单级驱动桥产品，确保设计的重型卡车驱动桥经济、实用、安全、可靠。关键字：载重汽车、驱动桥、单级减速桥、弧齿锥齿轮ABSTRACTDriveaxleisoneofthemostimportantpartsofautomobile・Thefunctionistoincreasethetorquefromdriveshaftorfromtransmissiondirectly,andthendistributeittoleftandrightwheelsw
3、hichhavethedifferentialabilityautomobileneededwhendriving・Andthedriveaxlehastosupporttheverticalforce,longitudinalforce,horizontalforceandtheirmomentsbetweenroadandframeorbody.Itsqualityandperformancewillaffectthesecurity,economic,comfortabilityandreliability.Throughthestudyofthistopic,wecand
4、esignthesingledrivingaxledevicesthatapplytotheheavytruckwithhigh-poweredengine,andmakesurethedriveaxlewedesignofheavytruckeconomic,practical,safeandreliable.Ontalkingabouttherunningprincipalofdrivingaxle,thethreekeytechnoledgeaboutvehicletravelingontherideandthrough,andnoisereductiontechnolog
5、yapplicationsandthestandardizationofparts,componentsoftheuniversal,Productssuchastheserializationthatweshouldmastertomeet,itdescribesandhasasystematicanalysisonthebasicprinciplesofvicclcdriveaxle.Accordingtothedesignprinciplesandanalysisandcomparisonofeconomy,application,comfortability,safety
6、andreliability,theheavytruckdriveaxlestructure,layoutways,andthefinaldriveassembly,differentialassembly,thebridgeeaseandaxlestructurecanbedetermined;andthestrengthcheckingofbrakeparts,aswellasmajorcomponentsimprovesoveralldesignofthedrivingaxle.Throughthestudyofthistopic,wecandesignthesingled
7、riveaxledevicesthatapplytotheheavytruckwithhigh-poweredengine,andmakesurethedriveaxlewedesignofheavytruckeconomic,practical,safeandreliable.Keywords:heavytruck、driveaxle、singlereductionfinaldrive、thespiralbevelgear目录摘要IABSTRACTII第1章绪论1第2章驱动桥结
