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外文翻译--电梯曳引机.doc

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外文翻译--电梯曳引机.doc

英文翻译TRACTIONMACHINEASPOWERPROVIDERFORLIFT,TRACTIONMACHINE,ALSOCALLEDMAINMACHINE,ISCOMPOSEDOFMOTOR,BRAKE,GEAREDMACHINEANDSEATITISADRIVETOMAKECARMOVEBYMEANSOFTHEFRICTIONBETWEENTRACTIONROPEANDSHEAVEACCORDINGTOWHETHERTHEGEAREDMACHINEISPROVIDEDORNOT,ITISCLASSIFIEDINTOGEAREDANDGEARLESSTYPESGEAREDTRACTIONMACHINEGEAREDTRACTIONMACHINEISWIDELYUSEDINCARGOLIFT,PASSENGERLIFTANDSERVICELIFTWITHSPEEDOFNOTMORETHAN20M/STOREDUCEWORKINGNOISEANDENHANCESTABILITY,WORMGEARISNORMALLYUSEDASGEAREDDRIVESUCHMACHINEISCOMPOSEDOFMOTOR,WORM,GEAR,BRAKE,ROPEANDSEAT,ASSHOWNISFIGURE21MAINPARAMETERS,SUCHASLIFTLOADANDSPEEDAREDETERMINEDBYHPANDSPEEDOFTRACTIONMACHINE,WORMANDGEARNUMBERS,GEARRATIO,DIAMETEROFTRACTIONMACHINE,ROPEGROOVESANDTRACTIONRATIOTRACTIONMODEFORLIFTSADOPTINGGEAREDTRACTIONMACHINE,THERELATIONSHIPBETWEENLIFTSPEED,TRACTIONGEARRATIO,TRACTIONMACHINEDIAMETER,TRACTIONMOTORSPEEDISASFOLLOWSWHEREVLIFTSPEED(M/S)DDIAMETEROFTRACTIONMACHINE(M)NMOTORSPEEDR/MINΊYTRACTIONRATIO(TRACTIONMODE)ΊJGEARRATIOFOREXAMPLEGIVENTHEFACTTHATSHEAVEDIAMETEROFTRACTIONSHEAVEIS08M,MOTORSPEEDIS1500R/MIN,REDUCTIONRATIOIS533,GEARRATIOIS21,WHATISLIFTSPEEDD08M,N1000R/MIN,ΊY2/1,ΊJ53/3FROMTHEGIVENCONDITIONS,WELEARNTHATD08M,N1000R/MIN,ΊY2/1,ΊJ53/3ACCORDINGTOABOVEMENTIONEDFORMULA,WECANCALCULATETHATASPOWERPROVIDERFORLIFTMOVEMENT,TRACTIONS/75M1353126014800814360JYIIΠDNVMACHINEFEATURESCOMPLICATEDOPERATIONPROCEDURES,AMONGWHICHISINVOLVEDWITHFREQUENTSTARTUP,BRAKE,CLOCKWISEANDCOUNTERCLOCKWISEROTATIONDUETOCONSTANTLYCHANGINGLOAD,WORKINGSTATUSOFTRACTIONMACHINEISCHARACTERISTICOFREPETITIOUSSHORTTIMEOPERATION,ELECTRICALCONTROLANDREGENERATIONTHEREFORE,WITHLOWSTARTUPCURRENT,LARGESTARTUPTORQUE,MECHANICALLYRIGIDFEATURESANDLOWNOISE,ITISREQUIREDTHATTRACTIONMACHINESHOULDNOTONLYBEADAPTEDFORFREQUENTSTARTUP,BRAKE,BUTALSOSTARTUPANDFUNCTIONWELLWHENPOWEROLTAGEFLUCTUATESWITHINNORMALRANGEBEINGSPECIALMACHINEFORLIFT,TRACTIONMACHINEISCHARACTERISTICOFCOMPLICATEDOPERATION,WHOSEHPCANBECALCULATEDTHROUGHFOLLOWINGFORMULAWHEREPSHAFTHPOFTRACTIONMACHINEKWGRATEDLOADOFCARKGΑOFFSETTINGCOEFFICIENTΗTOTALMECHANICALEFFICIENCYVLIFTSPEED(M/S)FORLIFTWITHGEAREDTRACTIONMACHINE,IFWORMGEARISARCHIMEDESTYPE,TOTALMECHANICALEFFICIENCYRANGESFROM05TO055;FORLIFTWITHGEARLESSTRACTIONMACHINE,TOTALMECHANICALEFFICIENCYRANGESFROM075TO08FOREXAMPLEFORANACTWOSPEEDLIFTWHOSERATEDLOADIS2000KGANDRATEDSPEEDIS05M/S,WORMGEARISARCHIMEDESTYPE,RATEDSPEEDOFMOTORIS960R/MIN,WHATISHPOFMOTORACCORDINGTOG2000KG,Α05,V05M/S,Η05,WECANCALCULATEBYINPUTTINGGIVENVALUESGEAREDTRACTIONMACHINEISCLASSIFIEDINTOACANDDCTYPESW191TRACTIONMACHINEISACFREQUENCYVARIABLEMOTORCURRENTLY,BESIDESWORMGEAREDMACHINE,BEVELANDSTARGEAREDMACHINESAREALSOAVAILABLEGEARLESSTRACTIONMACHINE98KW05102050512000102ΗΑVG1PGEARLESSTRACTIONMACHINEISUSEDINLIFTSWITHSPEEDOFMORETHAN20M/SWITHTRACTIONSHEAVEFIXEDINMOTORSHAFT,THISTRACTIONMACHINEISSIMPLEINSTRUCTUREWITHOUTANYMECHANICALGEAREDMACHINESPECIALLYDESIGNEDFORMANUFACTUREDFORLIFT,TRACTIONMOTORISSUITABLEFORLIFTOPERATIONANDCLASSIFIEDINTOSPEEDVARIABLEDCANDFREQUENCYVARIABLEACMOTORINFIGURE22ISSHOWNANACFREQUENCYVARIABLEGEARLESSTRACTIONMACHINETHISMACHINENEEDSMUCHMOREBRAKETORQUETHANGEAREDMACHINEWHENITISMANUFACTURED,THEREFORE,ITNEEDSARATHERBIGGERBRAKEGEARLESSTRACTIONMACHINEISMOREOFTENTHANNOTUSEDINCOMPOUNDWINDINGDRIVE,THEREFORE,FORCEAPPLIEDONTRACTIONSHEAVE,COMPOUNDWINDINGSHEAVEANDBEARISMUCHLARGERTHANTHATONTRACTIONMACHINE;CORRESPONDINGSHAFTISOFLONGERDIAMETERWITHNOGEAREDMACHINE,ITHASLONGERUSAGELIFEPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRACTIONMACHINEWECAN’THELPMENTIONINGTHEAPPLICATIONOFPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRACTIONMACHINEINLIFTWITHTHERAPIDDEVELOPMENTOFTRACTIONTECHNOLOGYINLIFT,MOREANDMORELIFTSWITHOUTMACHINEROOMAREADOPTINGPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRAILINGTECHNOLOGYFORLIFTSWITHOUTMACHINEROOM,THEREISNONEEDTOENLARGEWELLDIMENSIONS,SIMPLIFYINGANDBEAUTIFYINGCONSTRUCTION,SAVINGCOST,ESPECIALLYTHEAPPLICATIONVALUEOFSUCHLIFTSISENHANCEDBY图22无齿轮曳引机DAF290FIGURE22GEARLESSTRACTIONMACHINEDAFBRAKEMOTORTRACTIONSHEAVELOWNOISE,HIGHEFFICIENCYANDPOWERECONOMIZATION,ANDWHATDISTINGUISHESLIFTSWITHOUTMACHINEROOMFROMOTHERSLIESINTHEPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRACTIONMACHINEINFIGURE23ISSHOWNPMS425ALPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRACTIONMACHINEUSEDINTHYSSEN’SLIFTSWITHOUTMACHINEROOMTHETRACTIONMACHINEISFLATINSTRUCTURE,SOONLYAVERYSMALLSPACEISNEEDEDBETWEENWELLWALLSANDCARTOCOMPLETEINSTALLATIONWITHGEARLESSDESIGN,MOTORTORQUEDIRECTLYPASSESONTOTRACTIONSHEAVE,COMBINEDWITHSTATICFRICTIONOFNONDECELERATIONPART,DRIVINGEFFICIENCYCANEXCEED90;BESIDES,DUETOLOWROTATIONSPEED,TRACTIONMACHINERUNSWITHLOWNOISEANDISFREEFROMVIBRATIONTHETRACTIONMACHINEHASTWOMECHANOELECTRONICBRAKES,THEREFORE,THEOTHERBRAKECANPROVIDESUFFICIENTJERKFORCETOSTOPCARWITH100RATEDLOADIFONEBRAKEFAILSTOFUNCTIONCHARACTERISTICSOFPERMANENT–MAGNETSYNCHRONOUSGEARLESSTRACTIONMACHINE●COMFORTABLERIDING;●LOWRUNNINGNOISE;●HIGHEFFICIENCY;●LOWLOADOFELECTRICALDEVICES;●CONVENIENTANDRELIABLEMAINTENANCE,WITHOUTNEEDTOCHANGEOIL,ELIMINATINGOILLEAKAGE;●EASYTOREPLACEASSEMBLY,WITHEXTERIORBRAKE;●WIDERANGEOFSETTINGANDINSTALLATIONINTRACTIONMACHINECOMPOSEDOFSPRINGS,BRAKEBLOCKWITHLINER,BRAKEARMANDMAGNETIRON,MAGNETICBRAKEISMOSTFREQUENTLYUSEDINTRACTIONMACHINE,ASSHOWNINFIGURE24WHENMAGNETICCOILISPOWERON,BRAKEWILLRELEASE;WHENMAGNETICCOILISPOWEROFF,BRAKEBLOCKWILLPRODUCETORQUE,RELYINGONSPRINGSPRESSEDTIGHTLYONBRAKEGEAR

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