驱动桥设计外文翻译.doc
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驱动桥设计外文翻译.doc
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Cardriveaxledesign
1Introduction
Thestructureformofthemainreducerisbasedonthetypeofthegearandthewayoftheactivegearandthedrivengear.
2driveaxle
Driveaxleinthetailendofthepowertransmissionsystem,itsbasicfunctionistoincreasethetorquecamebythedriveshaftortransmission,thereasonabledistributionofpowertotheleftandrightdrivingwheels,andalsobearroleofroadandtheframeorbodybetweenverticalandlongitudinalforceandlateralforce.Thedriveaxleiscomposedofamainreducer,adifferential,awheeldrivedeviceandadriveaxlehousing.
Reduceristheoriginalmotivationandindependentoftheworkingmachinebetweentheclosedtransmission,usedtoreducespeedandincreasetorquetomeettheneedsofavarietyofworkingmachinery.Accordingtotransmissionformcanbedividedintothreedifferentforthegearreducer,wormreducerandplanetaryreducer;inaccordancewiththetransmissionoftheseriescanbedividedintosingleandmultistagespeedreducer;accordingtotransmissionlayoutsituationcanbedividedforexpansion,shunttypeandcoaxialtypereducer.Gearreducertransmissionefficiencyandhighreliability,longservicelife,maintenanceissimple,andthereforethescopeofapplicationisverywide.
2.1mainreducer
Themainreducergearhasthespiralbevelgeartype,thetypeofthedoublecurvedsurfacegeartype,thetypeofthecylindricalgearandthewormgearandsoon.Atpresent,themainreducergearoftheautomobiledriveaxleadoptsspiralbevelgear.Whentheloadishigh,theworkisstable,thenoiseissmall,andthecontactloadonthetoothsurfaceislow.Sotheuseofsinglebevelgears.
2.1.2mainreducerdrive,drivenbevelgearsupportform
Thecardrivingaxledesign,sotheuseofcantileverinstallation.Theusingofthecantileverinstallation,ensurethatthegearstiffness,activegearshaftneckshouldbeincreased,sothatthedistancebetweenthetwobearingsthanthedistanceofthecantileverhighatleast2.5times.
3thedifferentialdesign
Carintheexerciseofthesecurity,abouttwowheelsatthesametimetherolloverthejourneyisoftennotequal,aroundtwointhepressureisnotequal,andthetreadwearuneven,twowheelloadisunevenandcausethewheelrollingradiusdoesnotmatch;thewheelstouchthepavementconditionsaboutdifferent,exercisestheresistancerange,ontheonehandwillincreasetirewear,powerandfuelconsumption,ontheotherhandwilldiverttoodifficult,throughandhandlingstabilityisbad.Therefore,theleftandrightwheelsofthedriveaxleareprovidedwithawheeldifferentialmechanism.
Differentialisadifferentialtransmissionmechanism,usedinthetwooutputshafttorquedistribution,andensuretwooutputshaftmayrotateatdifferentangularvelocities,toensurethedrivingwheelsinvariouskindsofsportsundertheconditionofpowertransmission,toavoidslippingbetweenthetireandtheground.Differentialaccordingtoitsstructuralcharacteristicscanbedividedintogeartype,convexwheel,wormwheeltypeandteethembeddedinavarietyofforms,suchasfreewheel.
4halfshaftForsemiaxisdiameter
notlessthanthediameteroftherod,theendpartoftheprocessingdoneslightlythicker,andappropriatetoreducespendinglessofthekeywaydepth,thetoothnumbermustbeacorrespondingincreasein,usuallytake10teeth(carhalfaxle)to18teeth(truckhalfaxle).Thefailuremodeofthehalfshaftisbasicallytoofatiguefailure.Therodpartoftheaxleshaftoftheheavydutytruckisthicker,theouterendflangeisrelativelylarge,andthetwoendsoftheshaftcanbeusedasthehalfshaftstructurewithconnectionwhennolargerforgingequipmentisadopted,andtheprocessissimplifiedbytakingthesameparameters.Inthemodernautomobilehalfshaft,theisusedquitewidely,butalsohasthestructureformoftherectangleorthetrapezoidal.
Shaftisoneofthemainpartsofthemachine,andallofthetransmissionpartsofrotarymotionmustbeinstalledontheaxistocarryoutthemovementandpowertransmission.Sothemainfunctionoftheshaftistosupporttherotatingpartsandthetransmissionofmotionandpower.Accordingtothedifferentloadbearing,theshaftcanbedividedintoshaft,mandrelandshaftofthethirdclass,therelayunderbendingmomentandbearingtorquebecomestheshaft.Thistypeofshaftinthemachineinthemostcommon,onlytowithstandthebendingmomentanddoesnotbearthetorqueamandrel,themandrelisdividedintorotationandfixedmandrelmandreltwo.Shaftwhichisonlysubjectedtotorqueanddoesnotbearthebendingmomentbecomesthedriveshaft.
5thebridgeshellandthebridgeshellaccessoriesdesign
驱动桥壳主要功用是支承汽车的质量,且受由车轮传来的路面反力和反力矩,并且悬架传给车身;它又是由减速器、差速器、半轴的装配基体。
驱动轴壳是传力件又是载体,因此桥壳应满足如
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