欢迎来到天天文库
浏览记录
ID:59202944
大小:27.00 KB
页数:4页
时间:2020-09-10
《差速器和后轴.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、DifferentialandRearAxlesThedifferentialispartoftherear-axle-housingassembly,whichincludesthedifferential,rearaxles,wheels,andbearings.Ifthecarweretobedriveninastraightlinewithouthavingtomaketurns,thennodifferentialwouldbenecessary.However,whenthecarroundsaturn,theouterwheelmusttravelfarthe
2、rthantheinnerwheel.Thedifferentialpermitsthetworearwheelstorotatedifferentamountswhenthecargoesaroundaturn,whilestilldeliveringpowertobothrearwheels.Therearaxlesareattachedtothewheelsandhavebevelsidegearsontheirinnerends.Thedifferentialcaseisassembledontheleftaxlebutcanrotateonabearinginde
3、pendentlyoftheaxle.Thedifferentialcasesupportsthedifferential-piniongearonashaft,andthisgearmesheswiththetwobevelgears.Theringgearisattachedtothedifferentialcasesothatthecaserotateswiththeringgearwhenthelaterisdrivenbythedrivepinion.Thedrivingpowerentersthedifferentialthroughthedrivepinion
4、ontheendofthepropellershaft.Thedrivepinionismeshedwithalargeringgearsothattheringgearrevolveswiththepinion.Attachedtotheringgear(throughthedifferentialcase)isadifferential-pinionshaftonwhichareassembledtwodifferential-piniongears.Eachrearcarwheelhasaseparateaxle,andtherearetwosidegearsspli
5、nedtotheinnerendsofthetwowheelaxles.Thetwodifferential-piniongearsmeshwiththesetwosidegears.Whenthecarisonastraightroad,thetwodifferential-piniongearsdonotrotateonthepinionshaft,buttheydoexertpressureonthetwosidegearssothatthesidegearsturnatthesamespeedastheringgear,causingbothrearwheelsto
6、turnatthesamespeed,also.Thedifferentialcaseissupportedinthecarrierbytwotapered-rollersidebearings.Thisassemblycanbeadjustedfromsidetosidetoprovidetheproperbacklashbetweentheringgearandpinionandtherequiredsidebearingpreload.Thisadjustmentisachievedbythreadedbearingadjustersonsomeunitsandthe
7、placementofselectiveshimsandspacersonothers.Thedifferentialcaseissupportedinthecarrierbytwotapered-rollersidebearings.Thisassemblycanbeadjustedfromsidetosidetoprovidetheproperbacklashbetweentheringgearandpinionandtherequiredsidebearingpreload.Thisadjustmentisa
此文档下载收益归作者所有