驱动桥设计外文翻译

1、 CardriveaxledesignIntroductionThestructureformofthemainreducerisbasedonthetypeofthegearandthewayoftheactivegearandthedrivengear.driveaxleDriveaxleinthetailendofthepowertransmissionsystem,itsbasicfunctionistoincreasethetorquecamebythedriveshaftortransmission,thereasonabledistributionofpowertotheleft

2、andrightdrivingwheels,andalsobearroleofroadandtheframeorbodybetweenverticalandlongitudinalforceandlateralforce.Thedriveaxleiscomposedofamainreducer,adifferential,awheeldrivedeviceandadriveaxlehousing.Reduceristheoriginalmotivationandindependentoftheworkingmachinebetweentheclosedtransmission,usedtore

3、ducespeedandincreasetorquetomeettheneedsofavarietyofworkingmachinery.Accordingtotransmissionformcanbedividedintothreedifferentforthegearreducer,wormreducerandplanetaryreducer;inaccordancewiththetransmissionoftheseriescanbedividedintosingleandmultistagespeedreducer;accordingtotransmissionlayoutsituat

4、ioncanbedividedforexpansion,shunttypeandcoaxialtypereducer.Gearreducertransmissionefficiencyandhighreliability,longservicelife,maintenanceissimple,andthereforethescopeofapplicationisverywide.mainreducerThemainreducergearhasthespiralbevelgeartype,thetypeofthedoublecurvedsurfacegeartype,thetypeofthecy

5、lindricalgearandthewormgearandsoon.Atpresent,themainreducergearoftheautomobiledriveaxleadoptsspiralbevelgear.Whentheloadishigh,theworkisstable,thenoiseissmall,andthecontactloadonthetoothsurfaceislow.Sotheuseofsinglebevelgears.2.1.2mainreducerdrive,drivenbevelgearsupportformThecardrivingaxledesign,so

6、theuseofcantileverinstallation.Theusingofthecantileverinstallation,ensurethatthegearstiffness,activegearshaftneckshouldbeincreased,sothatthedistancebetweenthetwobearingsthanthedistanceofthecantileverhighatleast2.5times.thedifferentialdesignCarintheexerciseofthesecurity,abouttwowheelsatthesametimethe

7、rolloverthejourneyisoftennotequal,aroundtwointhepressureisnotequal,andthetreadwearuneven,twowheelloadisunevenandcausethewheelrollingradiusdoesnotmatch;thewheelstouchthepavementconditionsaboutdifferent,exercisestheresistancerange,ontheonehandwillincreasetirewear,powerandfuelconsumption,ontheotherhand

8、willdiverttoodifficult,throughandhandlingstabilityisbad.Therefore,theleftandrightwheelsofthedriveaxleareprovidedwithawheeldifferentialmechanism.Differentialisadifferentialtransmissionmechanism,usedinthetwooutputshafttorquedistribution,andensuretwooutputshaftmayrotateatdifferentangularvelocities,toen

9、surethedrivingwheelsinvariouskindsofsportsundertheconditionofpowertransmission,toavoidslippingbetweenthetireandtheground.Differentialaccordingtoitsstructuralcharacteristicscanbedividedintogeartype,convexwheel,wormwheeltypeandteethembeddedinavarietyofforms,suchasfreewheel.halfshaftForsemiaxisdiameter

10、notlessthanthediameteroftherod,theendpartoftheprocessingdoneslightlythicker,andappropriatetoreducespendinglessofthekeywaydepth,thetoothnumbermustbeacorrespondingincreasein,usuallytake10teeth(carhalfaxle)to18teeth(truckhalfaxle).Thefailuremodeofthehalfshaftisbasicallytoofatiguefailure.Therodpartofthe

11、axleshaftoftheheavydutytruckisthicker,theouterendflangeisrelativelylarge,andthetwoendsoftheshaftcanbeusedasthehalfshaftstructurewithconnectionwhennolargerforgingequipmentisadopted,andtheprocessissimplifiedbytakingthesameparameters.Inthemodernautomobilehalfshaft,theisusedquitewidely,butalsohasthestru

12、ctureformoftherectangleorthetrapezoidal.Shaftisoneofthemainpartsofthemachine,andallofthetransmissionpartsofrotarymotionmustbeinstalledontheaxistocarryoutthemovementandpowertransmission.Sothemainfunctionoftheshaftistosupporttherotatingpartsandthetransmissionofmotionandpower.Accordingtothedifferentloa

13、dbearing,theshaftcanbedividedintoshaft,mandrelandshaftofthethirdclass,therelayunderbendingmomentandbearingtorquebecomestheshaft.Thistypeofshaftinthemachineinthemostcommon,onlytowithstandthebendingmomentanddoesnotbearthetorqueamandrel,themandrelisdividedintorotationandfixedmandrelmandreltwo.Shaftwhic

14、hisonlysubjectedtotorqueanddoesnotbearthebendingmomentbecomesthedriveshaft.thebridgeshellandthebridgeshellaccessoriesdesignThemainfunctionofthedriveaxlehousingistosupportthequalityofthevehicle,andisaffectedbytheroadsurfacereactionforceandtorquetransmittedbythewheel,andthesuspensionispassedtothebody.

15、Thedriveshaftshellisaforcetransmittingmemberandthecarrier,sotheaxlehousingshouldmeetthefollowingrequirements:withsufficientstrengthandstiffness,toensurethatthereducergearmeshisnormalanddoesnotcauseadditionalbendingstress.underthepremiseofensuringsufficientrigidity,asfaraspossibletoreducethecartoimpr

16、ovetheridecomfort.toensuresufficientgroundclearance.thestructurecraftisgood,thecostislow.Thebridgeshellisacrossbeam,thepivotpointislocatedinthecenterofthetire,theloadfunctioninthesteelplatespringseat,theaveragetruckisusedtoimprovetheoverallcarryingcapacityofthetruck,thedistancebetweenthepivotpointof

17、thetwinshaftiscalculatedaccordingtothedistancebetweenthetwo.Themaximumstressofthedriveaxlehousingoccursnearthesteelplatespring.Theforcethatcausesthebendingmomentofthebridgeshellis:thecarryingcapacityoftheverticalloadG2,thetractionforceFanditsreactiontorqueM.AndcarshiftwhenthetirelateralforceY2extern

18、alforceinthedriveaxlehousing,inordertosimplifythecalculation,justneversideslipBRDFismovinginastraightlinecalculated,andintermsofsafetycoefficientdueconsideration.Thebendingstressofthemalleablecastironbridgeshouldnotexceed300mA2.Thebendingstressshouldnotexceed500m2onthehalfshaftbushingandwheelaxleofm

19、ediumcarbonalloysteel,andtheshearstressshouldnotexceed250N/mmA2.Combinestheactualsituationofthevehicle,consideringtheoverallexpansionformingweldingaxle,sothematerialtoconsiderductility.Wechoose16Mn.6summaryThroughthisdesign,itisnowtodesignaproduct,onlytofeelthattheirknowledgeisfarfromenough.Thereisa

20、saying:itisnevertoolatetolearn.Thatsabitofapoint!Ismyteacher,allmyknowledgetolearn!Throughthisdesign,theabilitytocheckthemanualhasbeengreatlyimproved.Now,throughtheguidanceofteachers,throughtheirownpractice,youcannowgotothelibrarytochecktheinformation,butalsotolookatwhataspectsoftheinformation,theps

21、ychologicalisveryclear,notsomuchasbefore.Inotherareasalsohavealotofharvest,thisgraduationdesignmakesmedevelopameticulousworkmethod.Beforedoinghomeworkalwaysgivealickandapromise,didnthaveabitofpatience,sittinginthestoolisnotanundertheheart,alwayswithafickleattitudetotreattheirownthing,now,Icanverycal

22、m,veryserioushasbeenabletocarryon.Thismaybetodothecoursedesignformetoleavethings,thiswillbeofgreatbenefittomelaterinthecommunity.Allinall,thisdesignhasmademealot!thankyou!轿车驱动桥设计1引言驱动桥处于动力传动系尾端，其基本功能是增加由传动轴或变速器传来的转矩，将动力合理分配给左、右驱动轮，且还承受作用路面和车架或车身之间的垂立、纵向力和横力。驱动桥由主减速器、差速器、车轮传动装置和驱动桥壳构成。2驱动桥驱动桥处于动力传动系尾

23、端，其基本功能是增加由传动轴或变速器传来的转矩，将动力合理分配给左、右驱动轮，且还承受作用路面和车架或车身之间的垂立、纵向力和横力。驱动桥由主减速器、差速器、车轮传动装置和驱动桥壳构成。减速器是原动机和工作机之间的独立的闭式传动装置，用来降低转速和增大转矩以满足各种工作机械的需要。按照传动形式不同可分为齿轮减速器，蜗杆减速器和行星减速器；按照传动的级数可分为单机和多级减速器；按照传动的布置形势又可分为展开式，分流式和同轴式减速器。齿轮减速器传动效率及可靠性高，工作寿命长，维护简便，因而适用范围很广。减速器的结构形式主减速器的结构形式是根据其齿轮的类型和主动齿轮与从动齿轮的安置方法与减速形式的不

24、同而异。主减速器的齿轮类型主减速器齿轮有弧齿锥齿轮类型，双曲面齿轮类型，圆柱齿轮类型和蜗轮蜗杆等形式。现今汽车驱动桥的主减速器齿轮基本采用螺旋锥齿轮。其在承受较高载荷时，工作够平稳，噪音较小，作用齿面上的接触负荷也低。所以运用单级锥齿轮。主减速器主动，从动锥齿轮的支承形式本此设计轿车驱动桥，所以运用悬臂式安装。采用悬臂式安装之时，保证齿轮的刚度，主动齿轴颈应加大，使二轴承之间的距离比悬臂的距离大至少2.5倍。3、差速器的设计汽车在安全行使过程中，左右俩车轮在同一时间所滚过的路程往往是不相等的，左右两轮胎内的气压不相等、胎面磨损不均匀、两车轮上的负荷不均匀而引起车轮滚动半径不符；左右两轮接触的路

25、面条件不同，行使阻力不等，一方面会加剧轮胎磨损、功率和燃料消耗，另一方面也会使转向过于困难，通过性和操纵稳定性变坏。因此，在驱动桥的左右车轮间都装有轮间差速器。差速器是个差速传动机构，用来在两输出轴间分配转矩，并保证两输出轴有可能以不同的角速度转动，用来保证各驱动轮在各种运动条件下的动力传递，避免轮胎与地面间打滑。差速器按其结构特征可分为齿轮式、凸轮式、蜗轮式和牙嵌自由轮式等多种形式。4.3半轴的结构设计及材料与热处理为使半轴的花键内径不小于杆部直径，常将加工花键的端部做得略粗些，并且适当地减小少花键槽的深度，花键齿数必须相应地增加，通常取10齿（轿车半轴）至18齿（载货汽车半轴）。半轴的破坏形式基本为扭转疲劳破坏。重型车半轴的杆部较粗，外端突缘比较大，当无较大锻造设备时可以采用两端均为花键联接的半轴结构，并且取相同花键参数来简化工艺。在现代的汽车半轴上，渐开线花键用得比较广，但也是有采用矩形或梯形花键的结构形式的。轴是组成机器的主要零件之一，一切做回转运动的传动零件，都必须安装在轴上才能进行运动及动力的传递。因此轴的主要功用是支撑回转零件及传递运动和动力。按照承受载荷的不同，轴可分为转轴，心轴和传动轴三类，工作中继承受弯矩又承受扭矩的成为转轴。这类轴在机器中最常见，只承受弯矩而不承受扭矩的成为心轴，心轴又分为转动心轴和固定心轴俩