外文翻译--汽车后轮驻车制动器的特点与维修.doc

附录Carrearparkingbrakeiswellknowncharacteristicsandmaintenanceparkingbrake,thecarmusthaveoneofthebrakingdevice.Ivecosecondgenerationproductsinvehiclebrakes,parkingbrakeisamechanicalcontrolmechanismandthereardrumbrakecombination.Suchastructure,sothatnotonlyafterthebrakedrumbrakeandparkingbrakealsoplayedarole.Withtheuseofreardiscbrake,TurinVvehicleparkingbrakewiththerearbrakeswillbefixedintheformandchange.Iftherearwheelswithdrumbrakes,whilemaintainingthebasicstructureoftheoriginalsecondgenerationproductstheuseofadiscbrake,rearwheelwillhavetoconfigureadedicatedparkingbrake.Onthediscbrakeisconcerned,thereisthestructurewiththeparkingbrakediscbrake,theparkingbrakingforceactsonthebrakediscsonbothsidesoftheworksurface,suchabrakecomplexstructure,relativelysomewhatlessreliable.TurinVcarsequippedwithdualpistonslidingfrontdiscbrakeshavespecificallysetupaftertheparkingbrake.Theroleoftheparkingbrakeforcetothebrakedruminnerdiskontheworksurface,sothatthebrakedischastwoseparatefrictionsurface,lifecanbeimproved,brakecaliperisalsosimplifiedthestructure.TurinVcarrearparkingbrakedevicemanipulatedbyamechanicalparkingbrakeandspecialclimateoftwopartsbrakediscforthetraffic,sharedparkingbrakeparts.1,mechanicalcontrolmechanismtomaintainthebasicstructureoftheoriginalsecondgenerationproducts,mainlycomposedofpieceswithahandle,thefirstwirecable,ratchetplate,adjustthethreadedsleeve,lockingnut,afterthewirecableandtheguidediscandsoon.2,thespecialstructureandprincipleoftheparkingbrakediscbrakeafterthematchwithaspecialparkingbrake,parkingbrakeafterthespecialbottombracketthrougheightholes,andtherearaxlerelativetothefixedaxleshaftflangebolts.Beforeandafterthefrictionshoeupperandlowerendsarepulledtightagainstthereturnspringontheroleofregulationunderthepullpinandarminthemiddleandthebottomthroughtheactivesupportunderwritingphase.Slidethegearonthepinontheregulatorcanadjusttheelongationorshorteningthelengthofsalestoadjustthefrictioninsidetheshoeanddrumbrakediscspace.Roleinpullingarm,itissubjecttomanipulationafterthewirecable,whenthepullthehandbrakelever,therolewillbethecentralaxisofthepinpullingarmasafulcrum,thefrictionshoebeforeandafterdistraction,sothatthedrumwithaneffectivebrakediscfrictiontorque,andthusplayaroleintheprivateparkingbrakeparkingbrakeinthebrakeplatebracket,andanothertwoholesfortheinstallationofrearbrakeclampassembly.AfterthebanddrumandwheelbrakediscwillbeYi,afterthespecialparkingbrake,brakecaliperassembly,andsoorderlytogether.3,specialparkingbrakeafterthedecompositionandsynthesisinvehiclerearwheelswhentheremovaloftheYi,anumberofcomponentssuchasrearbrakedisc,youcanspecialparkingbrakeonthedecompositionandsynthesis,thebasicprocessstepsareasfollowsFromthefrontBufrictionshoe,removethereturnspring,spinofftheshortlengthadjustment,removethefrictionbetweenthesupportshoeunderwritingfolder,youcanremovethefrictionshoe.Removethebranchunderwriting,HouLasuolooseparkingbrakepullarmconnectedwiththerole,removetheeffectofthesecondarmpullthewheelspeedsensormountingbracketremoved,youcanremovethesensor.Removetheaxlecasingundertheflangeandtheeightmountingbolts,thenremovetheparkingbrakebottombracket.accordingtotherequirementsofthedrumbrakesonthepartsremovedforcleaningchecks,abandonedexceededthedifferenceofwearparts.synthesisbydecompositionofthereversesteps.Aftersynthesis,measuredwithaverniercaliperbeforethehindpiecediameter,whiletoggleadjustmentpin1,thediametervaluethan1720,asmall0.4}1mm.Aftertheadjustmentofparkingbrakeparkingbrakebecausethebrakeafterthenonautomaticcompensatingclearance,theuseofaperiodoftime,thebrakegapwillgraduallyincrease,reflectingthetensioninthehandlespinewhenthenumberofteethaffected,willexceedthenumberofnormalnumberofteethaffected4}6,whichwillaffecttherearwheelinvehicleperformance.Tothisend,promptlyaftertheparkingbrakeadjustment.Adjustedasfollowsfromthetoprearofthecar,andtosupporttheframebracket,thenremovetherearwheelsLoosentheparkingbrakecableadjustingscrewlocknutsetsRemovethetoplongaftertheparkingbrakeholerubberplug,theuseofspecialtools99,372,249toggleadjustmentpingear,sothatbeforeandafterthefrictionshoedistraction,resultinginhandcannotturntheplatesofarlooseagainwithspecialtoolstoadjustthepingearaside,thesystemFixeddiskfreetorotatebrakegapofabout0.2}0.5mrri,rebuilttherubberpluginthehole,refittedtherearwheelsParkinginthecabpullingteethsoundsystemtothethirdpositionofthehandleandtightentheadjustmentscrewsetscannotbepulledupbyhanduntilthewheelrotatesPulldownandreleasetheparkingbrakelever3}4,onthewholedeviceaftertheparkingbrakeadjustments,andcheckthefinaltighteningwhenthehandleis6Maximumstroketeeth,andfinallytightentheadjustingscrewlocknutsets,andloweredcars.汽车后轮驻车制动器的特点与维修众所周知，驻车制动是汽车必备的制动装置之一。依维柯二代产品的驻车制动装置，是由驻车制动机械操纵机构与后鼓式制动器组合而成。这样的结构，使后鼓式制动器不仅是行车制动器，而且还起到了驻车制动作用。随着后轮盘式制动器的运用，都灵V汽车的驻车制动器将会随着后轮制动器动形式而变化。若后轮采用鼓式制动器，则基本维持原二代产品的结构若采用盘式制动器，则要配置专用的后轮驻车制动器。就盘式制动器而言，存有带驻车制动结构的盘式制动器，其驻车制动力也作用在制动盘两侧工作表面上，这种制动器结构复杂，可靠性相对稍差。都灵V汽车为配用双活塞滑动前盘式制动器须要，专门设置了后驻车制动器。使其驻车制动力作用在制动盘的内鼓工作表面上，这样使制动盘具有两种分开的摩擦表面，寿命可以提高，制动钳的结构也相应简化。都灵V汽车的后轮驻车制动装置，由机械式操纵和专用候驻车制动器两大部分组成（制动盘为行车、驻车制动器共用件）。1、机械式操纵机构基本维持原二代产品的结构，主要组成件有手柄、前钢丝拉索、棘齿板、调整螺套、锁紧螺母、后钢丝拉索及导盘等。2、专用驻车制动器结构和原理与后盘式制动器相配的专用驻车制动器，专用后驻车制动器通过底板支架上的八个孔，与后桥半轴凸缘用螺栓相固定。前、后摩擦蹄片上下端被回位弹簧紧拉靠在上调节销和下作用拉臂上，中间通过支承销与底板活络相接。拨动上调节销上的齿轮可伸长或缩短调节销的长度，从而可调整摩擦蹄片与制动盘内鼓的间隙。作用拉臂，它受后钢丝拉索的操纵，当拉紧驻车制动手柄时，作用拉臂将以中心轴销为支点，撑开前后摩擦蹄片，使与制动盘内鼓产生有效摩擦力矩，从而起到驻车制动作用在专用驻车制动器的制动底板支架上，另有二只安装孔，以便装置后制动钳总成。带内鼓的后制动盘将和轮毅、后专用驻车制动器、制动钳总成等有序地组合在一起。3、专用后驻车制动器的驻车分解与合成当拆除了后轮毅、后制动盘等若干零部件后，即可对专用驻车制动器进行分解与合成，基本工艺步骤如下从前后摩擦蹄片卜，拆下回位弹簧，旋短调节销长度，拆下摩擦蹄片中间的支承销夹,即可取下摩擦蹄片。