外文翻译液压站及液压元件发展概况Word格式.docx
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HydraulicPumpStationalsoknownasthestationsareindependenth-ydraulicdevice.
Itrequestedbytheoilgradually.Andcontrollingthehydraulicoilflowdirection,pressureandflowrate,appliedtothemainframeandhy-draulicdevicesseparabilityofhydraulicmachinery.
Userswillbeprovidedafterthepurchasehydraulicstationandhostofimplementingagencies(motoroilorfueltanks)connectedwithtubing,Hydraulicmachinerycanberealizedfromthesemovementsandtheworkcycle.
Hydraulicpumpstationisinstalled,Manifoldorvalvecombination,t-anks,acombinationofelectricalboxes.
Functionalcomponents:
Pumpdevice--isequippedwithmotorsandpumps,hydraulicstationisthesourceofpower.tomechanicalenergyintohydraulicoilpressurecanbe.
Manifold--fromhydraulicvalvebodyandchannelassembled.Rightdirectionforimplementationofhydraulicoil,pressureandflowcontrol.
Valveportfolio--platevalveisinstalledinupboardafterboardconn-
ectswiththesamefunctionalIC.
Tank--plateweldingsemi-closedcontainers,alsoloadedwithoilfilteringnetwork,airfilters,usedoil,oilfiltersandcooling.
Electricalboxes--atthetwopatterns.Asetofexternalfuseterminalplate;
distributionofafullrangeofelectricalcontrol.
HydraulicStationprinciple:
motordrivenpumprotation,whichpumpoilabsorptionfromtheoiltank.tomechanicalenergyintohydraulicpressuretothestation,hydraulicoilthroughManifold(orvalvecombinations)realizedthedirection,pressure,Afteradjustingflowpipeandexternaltothecylinderhydraulicmachineryormotoroil,soastocontrolthedirectionofthemotivefluidtransformationforcethesizeandspeedthepaceofpromotingthevariousactinghydraulicmachinery.
Adevelopmentcourse
ChinaHydraulic(includinghydraulic,thesamebelow),pneumaticandsealsindustrialdevelopmentprocesscanbebroadlydividedintothreephases,namely:
20early1950stotheearly1960s,theinitialstage;
60'
sand70forspecializedproductionsystem;
80~90'
sgrowthstagefortherapiddevelopmentstage.Which,hydraulicindustryintheearly1950sfromthemachinetoolindustryproductionoffakeSu-grinder,broachingmachine,copyinglathe,andotherhydraulicdrivestarted,HydraulicComponentsfromtheplanthydraulicmachineshop,self-occupied.Afterenteringthe1960s,theapplicationofhydraulictechnologyfromthemachinegraduallyextendedtotheagriculturalmachineryandmechanicalengineeringfields,attachedtotheoriginalvelocityofhydraulicshopsomestandoutaspiecesofhydraulicprofessionalproduction.Tothelate1960s,early1970s,withthedevelopmentofmechanizedproduction,especiallyinthesecondautomobilefactoryinprovidingefficient,automatedequipment,alongwiththeHydraulicComponentsmanufacturinghasexperiencedrapiddevelopmentofthesituation,agroupofSMEshavebecomeprofessionalhydraulicpartsfactory.1968China'
sannualoutputofhydrauliccomponentshavenearly200,000in1973,machinetools,agriculturalmachinery,mechanicalengineeringindustries,theproductionofhydraulicpartsfactoryhasbeentheprofessionaldevelopmentofmorethan100andanannualoutputmorethanonemillion.anindependenthydraulicmanufacturingindustryhasbeguntotakeshape.Then,hydraulicpiecesoffakeproductsfromtheSovietUnionfortheintroductionoftheproductdevelopmentandtechnicaldesigncombiningtheproductstothepressure,Hypertension,andthedevelopmentoftheelectro-hydraulicservovalvesandsystems,hydraulicapplicationareasfurtherexpanded.Aerodynamicthanthestartoftheindustrialhydraulicyearslater,in1967begantoestablishprofessionalpneumaticcomponentsfactory,PneumaticComponentsonlyascommodityproductionandsales.Sealedwithrubberandplastics,mechanicalsealsandsealingflexiblegraphitesealingindustry,theearly1950sfromtheproductionordinaryO-rings.rubberandplasticsextrusion,suchasoilsealsealingandsealasbestosproductsstarttotheearly1960s,begunproductionofmechanicalsealsandflexiblegraphitesealingproducts.1970s,theburningoftheformerMinistry,aMinistry,theMinistryofAgriculturalMechanizationSystem,agroupofprofessionalproductionplantshavebeenestablished,andtheofficialestablishmentofindustriestosealindustrialdevelopmenthaslaidthefoundationforgrowth.
Sincethe1980s,inthecountry'
sreformandopeninguppolicyguidelines,withthedevelopmentofthemachineryindustry,basedmainframepiecesbehindtheconflictshavebecomeincreasinglyprominentandattractedtheattentionoftherelevantdepartments.Tothisend,theMinistryoftheoriginalonein1982,formedthebasisofcommonpiecesofIndustry,willbescatteredintheoriginalmachinetools,agriculturalmachinery,mechanicalengineeringindustriescentralizedhydraulic,pneumaticandsealsspecializedfactories,placingthemundercommonmanagementinfrastructurepiecesBureau,sothattheindustryintheplanning,investment,technologyandscientificresearchanddevelopmentinareassuchasinfrastructurepiecesBureauofguidanceandsupport.Sincethenenteredaphaseofrapiddevelopment,hasintroducedmorethan60itemsofadvancedtechnologyfromabroad,includingmorethan40itemsofhydraulic,pneumatic7.Afterdigestionandabsorptionandtransformation,nowhavemassproduction,andindustry-leadingproducts.Inrecentyears,theindustryincreasedthetechnologicaltransformationefforts,in1991,Localenterprisesandtheself-financingtotalinputofabout20billionyuan,ofwhichmorethan1.6billionyuanHydraulic.Throughtechnologicaltransformationandtechnologyresearch,andanumberofmajorenterprisestofurtherimprovetheleveloftechnology,techniqueandequipmenttobegreatlyimproved.Inordertoformahigherstartingpoint,specialization,andrunproductionhaslaidagoodfoundation.Inrecentyears,manycountriesinthedevelopmentofcommonownershipguidelines,underdifferentownershipSMEsrapidriseshowinggreatvitality.Withthefurtheropeningup,three-fundedenterprisesrapiddevelopmentofindustrystandardsforimprovingandexpandingexportsplayanimportantrole.Today,ChinahasandtheUnitedStates,Japan,Germanyandothercountriesfamousmanufacturersjointventuresorwholly-ownedbyforeignmanufacturerstoestablishapistonpump/motor,planetaryreductiongears,steeringgear,hydrauliccontrolvalve,hydraulicsystem,hydrostatictransmission,hydraulicCasting.pneumaticcontrolvalve,cylinder,gasprocessingtriplepieces,mechanicalseals,rubberandsealproductsmorethan50productionenterprises,attractingforeigninvestmentover200millionU.S.dollars.
Second,thecurrentsituation
(1)BasicProfiles
After40yearsofefforts,Chinahydraulic,pneumaticandsealingindustryhasformedarelativelycompletecategories.acertainleveloftechnicalcapacityandtheindustrialsystem.Accordingtothe1995ThirdNationalIndustrialCensusstatistics,hydraulic,Pneumaticsealsandindustrial370,000annualsalesincomeof100millionyuaninstate-owned,village-run,privateandcooperativeenterprises,individual,"
threecapital"
enterpriseswithatotalofmorethan1,300,ofwhichabout700hydraulic,Pneumaticsealsandtheapproximately300thousand.By1996withtheinternationaltradestatistics,thetotaloutputvalueofChina'
sindustryhydraulic2.348billionyuan,accountingfortheworld'
s6;
Pneumaticindustryoutput419millionyuan,accountingforworldNo.10.
(2)thecurrentsupplyanddemandprofiles
Throughtheintroductionoftechnology,independentdevelopmentandtechnologicalinnovation,andhigh-pressurepistonpump,gearpumps,vanepump,GeneralMotorshydraulicvalves,tanks,Non-lubricatedaerodynamicpiecesandvarioussealsofthefirstlargetechnologyproductshasincreasednoticeably.stabilityofthemassproductionmay,forvariousmainframeproductsprovidealevelofassurance.Inaddition,hydraulicandpneumaticcomponentsoftheCADsystem,pollutioncontrol,proportionalservotechnologyhasscoredsomeachievements,andisalreadyinproduction.Currently,hydraulic,pneumaticandsealsproductstotalabout3,000species,morethan23,000specifications.Amongthem,thereare1,200hydraulicvarieties,morethan10,000specifications(includinghydraulicproducts60varieties500specifications);
Pneumaticare1,350varieties,morethan8,000specifications;
Rubberseal350speciesmorethan5,000specificationshavebeenbasicallycatertothedifferenttypesofmainframeproductstothegeneralneeds,completesetsofequipmentformajorvarietiesofmatchingratewasover60%,andstartedasmallamountofexports.
1998piecesofhomemadehydraulicoutput4.8million.salesofabout28billion(ofwhichabout70%mechanicalsystems);
aerodynamicpiecesyield3.6million.salesofabout5.5billion(ofwhichabout60%ofmechanicalsystems);
Sealsoutputofabout800million.salesofabout10billion(ofwhichabout50%mechanicalsystems).AccordingtotheChinaHydraulicPneumaticSealsIndustryAssociation1998annualreport,hydraulicproductsalesrateof97.5%(101%forhydraulic),pneumatic95.9%,98.7%sealed.Thisfullyreflectsthebasicmarketingconvergence.
Myhydraulic,pneumaticandsealingindustryhasattainedagreatdealofprogress,butwithmainframedevelopmentneeds,andtheworld'
sadvancedlevel,therearestillmanygaps,mainlyreflectedintheproductvariety,performanceandreliability,andsoon.Hydraulicproductsasanexample,productsabroadonlyone-third,lifeforhalfabroad.Inorderto