多马达驱动机械外文翻译.docx

多马达驱动机械外文翻译.docx

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多马达驱动机械外文翻译

Themulti-motordrive

DESCRIPTION:

Thepresentinventionconcernsadriveforanescalator,whichdrivesthestairbeltandisarrangedononeorbothsidesoftheescalatorattheupperand/orthelowerendthereof,whereinthedrivecomprisesamaindrivewheelandatleastonemotorwithgearandbrakecomponents.

BACKGROUNDOFTHEINVENTION

Differentdispositionsandconstructionalprinciplesareknownforescalatordrives.Sincethedrivemustbedesignedforthemaximallyoccurringload,arelativelylargeandstronglydimensionedmotorwithacorrespondinggearisnecessary.Poorefficiencyatthemostlyprevailingpartialloadandthelargeinstallationvolumeinthecaseoflimitedspaceavailabilitywithinanescalatorconstructionaredisadvantagesofsuchadrive.

Thesedisadvantagesarepresenttoalesserdegreeornotatallwithmulti-motordrives.Suchadriveforescalatorsandwalkways,whichcomprisestwoindividualdrivesortwotwindrives,theoutputgearwheelsofwhichdrivethestairchainortheplatechainand,bywayofanadditionalgear,thehandrail,isknownfromDE3526905.

Suchaconstructionisexecutedindifferentvariantsandcorrespondinglycomprisesanumberofdifferentgearsandgearhousingsforthestairchaindriveortheplatechaindrive.Furthermore,theindividualdrivesareequippedwithplanetarygears,whichcausesrelativelyhighcosts.

Theobjectofthepresentinventionistocreateanimprovedmulti-motordriveforescalators,whichcanbeimplementedatfavorablecosts,whichmaybebuiltupinamodularmanner,andwhichcoversausualperformancerange.

BRIEFDESCRIPTIONOFTHEINVENTION

Thedriveaccordingtothepresentinventiondistinguishesitselfbyseveralconstructionallyidenticaldriveunitsbeingmountabledistributedatthecircumferenceofamaindrivewheel,wherebythemaindrivewheeloritstoothingneedbedimensionedonlyforloadingbyasingledriveunit.Themaindrivewheelitselfthuscanhaveasmallerwidth,whichisofgreatadvantagefortheaccommodationofthedrivepartsinthecaseofanescalator.

Thedriveunits,inanumbercorrespondingwithpowerrequirements,maybeflange-mountedtoamaingearhousingidenticalforallperformanceclasses.Thissimplifiestheproductionprocessfortheentireconstructionalseries,reducestheinventoryandfacilitatesmaintenanceandrepairs.Thedriveunitsareprovidedwithtorquetransmittersand/orrotationalspeedtransmittersforrecognitionoftheirmechanicalloading.

Eachofthedriveunitscanfurthermorebeprovidedwithaclutchwhichmakesaselectableswitching-inorswitching-outofadriveunitpossible.Thedrivefurthercomprisesafrequency-settingdevicewhichiscommontoalldriveunitsandbymeansofwhichdifferentspeedscanbesetandwhichalsoservesasastartingaid.Acontrolandregulatingunitproducescorrespondingcontrolandregulatingcommandsbytheprocessingofincomingdata.Thecontrolandregulatingunitcausestheswitching-inandswitching-outofindividualdriveunitsonthebasisofactualloaddatafromthetorquetransmitters,whichhelpstoimprovetheelectricalandmechanicalefficiencyandthusalsoreducestheenergyconsumption.

Theuseofpolyphasealternatingcurrentsquirrel-cagemotorsofvariablefrequencyandtheirassociatedcontrolhastheadvantagethathightorquescanbeproducedatlowrotationalspeeds.

BRIEFDESCRIPTIONOFTHEDRAWINGS

Theinventionisexplainedmorecloselyinthefollowingwiththeaidofanillustrativeexampleofanembodimentthereofandisillustratedintheaccompanyingdrawings,wherein:

FIG.1showsanescalatorwithadriveaccordingtotheinventionattheupperendoftheescalator;

FIG.2showsthedrivewithdriveunitsflange-mountedonamaingeartransverselytothedirectionoftraveloftheescalator;

FIG.3showsthedrivewithdriveunitsflange-mountedonamaingearlongitudinallyofthedirectionoftraveloftheescalator;

FIG.4showsathree-dimensionalillustrationofthedrivearrangementaccordingtoFIG.2;

FIG.5showsathree-dimensionalillustrationofthedrivearrangementaccordingtoFIG.3;and

FIG.6showsablockschematicdiagramandfunctionaldiagramofthedrivewithallassociatedcomponents.

DETAILEDDESCRIPTIONOFTHEINVENTION

FIG.1showsanescalator1withanupperend2,belowwhichdriveunitsdenotedby7andapartofastairchain3arevisible.

FIG.2showsthedetailsofadrive,whichisinstalledwithinacarryingstructure9attheupperend2oftheescalator1.Threeidenticallyconstructeddriveunits7driveatoothedmaindrivewheel6bywayofanoutputgearwheel7.6andanintermediategearwheel21,andarearrangedanddistributedaboutthecircumferenceofthemaindrivewheel6.Themaindrivewheel6,togetherwithastairchainwheel5,arefastenedonthemainshaft4ofthedrive.Thedriveunits7arefirmlyconnectedtoamaingearhousing8atthreeplanarflange-connectingopenings24formedforthispurpose.Whenlessthanthreedriveunits7areneeded,theunusedflange-connectingopening24maybeclosedbyacoverandtheassociatedintermediategearwheel21isnotinserted.Withthisconstruction,thesamemaingearhousing8canalwaysbeusedforone,twoorthreeneededdriveunits7.Theaxlesofthedriveunits7arearrangedtransverselytothedirectionofmovementoftheescalator1,whichyieldstheadvantageofashortmachineroom.

Asexampleofavariant,FIG.3showsanarrangementofthedriveunits7paralleltothedirectionofmovementoftheescalator1.Inthismannerofarrangement,thedriveunits7additionallycompriseabevelgear7.3.Motor7.1,clutch7.2,brake7.4,flywheel7.5andtheoutputgearwheel7.6,whichareotherwiseconstructionallyidenticalwithandincorporatedinthedriveunits7ofFIG.2,arepresentforeachdriveunit7.Themaingearhousing8islikewisealwaysthesameforone,twoorthreedriveunits7andunusedflange-connectingopenings24canlikewisebecoveredbyacover.

FIG.4isaspatialillustrationofthedriveaccordingtoFIG.2withinthecarryingstructure9oftheescalator1.Twostairelements22areillustratedinadditiontotheelementsshownintheprecedingillustrations.

FIG.5isasimilarspatialillustrationofthedriveaccordingtoFIG.3withinthecarryingstructure9ofescalator1.Thetwostairelements22arelikewiseadditionallyshown.

Thefunctionandoperationofthemulti-motordriveaccordingtotheinventionistobeexplainedmorecloselyinthefollowingbyreferencetoFIG.6.Thecurrentsupplyofthedrivetakesplaceasusualfromlocalthree-phasecurrentmains13withphasesR,SandTwhichareledtoamainswitch14.Followingthereon,theentiredriveisconnectedthroughamainrelayorseveralrelays15.Therethenfollowsafrequency-settingdevice16,whichbywayofarelaycontrol23withtherelaysS1,S2toSnfeedsthemotors7.1（M1,M2toMn）ofthedrivemodules7atavariablefrequencycurrentanddirectionofrotationasprovidedbythefrequency-settingdevice16.ThemotorsM1,M2toMnare,asalreadyshownanddescribedinthepreceding,operativelyconnectedwiththemaindrivewheel6bywayofgears7.3andoutputgearwheels7.6andintermediategearwheels21,whicharenotfurtherillustratedhere.Torquetransmitters20（L1,L2toLn）forthepurposeofthemeasurementoftheactualmechanicalloadingofthemotorsM1,M2toMnareinstalledatasuitableplaceinthetransmissionbetweenthemotorsM1,M2toMnasknownintheart.Themaingearwheel6drivesaspeedtransmitter19bywayofanappropriateknowntransmission,whichsimilarlyisnotmorecloselyillustrated.

Acontrolandregulatingunit10containsmicroprocessorandrelaycontrolcomponents,aswellassignalanddatainputsandoutputs.Firstinputdataline18.1suppliesspeedvaluesfromthespeedtransmitter19,whicharefedasactualvaluestoaninternalregulatingsection.Thesecondgroupofinputdatalines18.2providemeasurementvaluesfromthetorquetransmitters20and,throughappropriateprocessing,causetheswitching-inandswitching-outofindividualdrivemodules7.Athirdgroupofinputdatalines18.3suppliesdatafromtransmitters11,whichessentiallyconcerncontrolsafetycontactsandmodeofoperationswitches.Afirstgroupofoutputdatalines17.1leadstotherelays15andtothefrequency-settingdevice16.Asecondgroupofoutputdatalines17.2containcontrolsignalsfortherelaycontrol23,andthethirdgroupofoutputdatalines17.3providesthedatatocontrolopticalsignalsandillumination12.

Themulti-motordriveaccordingtotheinventionfunctionsasfollowing:

Duringstarting-upoftheescalator1,therelay15forthedriveisswitchedon,thefrequency-settingdevice16isrunupandatleastonedrivemodule7isswitchedonbywayoftherelaycontrol23bythecontrolandregulatingunit10accordingtothechoiceofdirectionandastart-upprogram.Onreachingthetargetspeed,thedriveregulationinthecontrolandregulatingunit10holdsthespeedoftraveloftheescalator1constantwithincloselimitsindependentlyoftheload.Duringthenowfollowingoperationoftheescalator1,theinputdatalines18.2fromthetorquetransmitters20supplyinformationaboutthemechanicalloadingoftheswitched-indrivemodules7（motorsM1,M2toMn）.

Inthecaseoflowornoloadingbytransportedpersons,thedrivepowerofthefirstmotorM1maysuffice,andthefurthermotorsM2toMnremainswitchedoff.IfafullloadingwithatendencytolastingoverloadissignalledbythetorquetransmitterL1,thenextmotorM2isswitchedonafteradefinedtime.Thesignalsfr