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1、附录AHydraulicsystemC.J.Sexton,S.M.LewisandC.P.PleaseUniversityofSouthampton,UKAbstract:Acompletehydraulicsystemconsistsoffiveparts,namely,powercomponents,actuators,controlcomponents,auxiliarycomponents(accessories)andhydraulicoil.Thefunctionofhydraulicsystemistohelphuman
2、work,mainlythroughtheimplementationofcomponentsintothepressureofrotationorreciprocatingmovement.Otheradvantagesofthehydraulicsystemincludebi-directionalmovement,overloadprotection,andvariablespeedcontrol.Inanyoftheexistingpowertrainsystems,thehydraulicsystemalsohasthela
3、rgestunitmasspowerratio.Sealsandsealsareanimportantpartofhydraulicequipment.Itsreliabilityandservicelifeisanimportantindextomeasurethequalityofhydraulicsystem.Keywords:Apowerelement;anactuatingelement;acontrolelement;anauxiliaryelement;hydraulicfluidGenerally,thereareon
4、lythreebasicwaystotransmitpower:electrical,mechanical,andhydraulic.Mostapplicationsactuallycombinethethreemethodsintothemostefficientandcomprehensivesystem.Inordertoreasonablydeterminewhichmethodtotake,itisimportanttounderstandthesalientfeaturesofthevariousmethods.Forex
5、ample,thehydraulicsystemtransmitspowermoreeconomicallyoveralongdistancethanamechanicalsystem.Thehydraulicsystem,however,hasashortertransmissiondistancethantheelectricalsystem.-9-Hydraulictransmissiontherearemanyoutstandingadvantages,itiswidelyused,suchasthegeneralindust
6、rialuseofplasticsprocessingmachinery,pressuremachinery,engineeringmachinery,machinetoolsandothermechanicalequipment;applicationofconstructionmachinery,agriculturalmachinery,automobileandothermetallurgicalmachinery;ironandsteelindustry,liftingmachinery,arolleradjustmentd
7、evice;controlgatedeviceinthewaterconservancyproject,riverbedliftingdevice,bridgesandotheroperatingmechanism;highspeedturbinepowerplantequipment,suchasnuclearpowerplants;shipdeckwithcrane(winch),bowdoor,bulkheadvalvesternthruster;specialtechnologygiantantennawithcontrold
8、evicesmeasurementbuoysmovementssuchasrotatingstage;militaryindustrialcontroldevicesusedinartilleryshipantiroll
