ofhydrauliccomponentsProfiles液压站及液压元件发展概况

TingBaowasrevisedonJanuary6,20021ofhydrauliccomponentsProfiles液压站及液压元件发展概况HydraulicStationandthedevelopmentofhydrauliccomponentsProfilesHydraulicPumpStationalsoknownasthestationsareindependenth-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.AdevelopmentcourseChinaHydraulic(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,ofwhichmorethanbillionyuanHydraulic.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,attractingforeigninvestmentover200million.dollars.Second,thecurrentsituation(1)BasicProfilesAfter40yearsofefforts,Chinahydraulic,pneumaticandsealingindustryhasformedarelativelycompletecategories.acertainleveloftechnicalcapacityandtheindustrialsystem.Accordingtothe1995ThirdNationalIndustrialCensusstatistics,hydraulic,Pneumaticsealsandindustrial370,000annualsalesincomeof100millionyuaninstate-owned,village-run,privateandcooperativeenterprises,individual,"threecapital"enterpriseswithatotalofmorethan1,300,ofwhichabout700hydraulic,Pneumaticsealsandtheapproximately300thousand.By1996withtheinternationaltradestatistics,thetotaloutputvalueofChina''sindustryhydraulicbillionyuan,accountingfortheworld''s6;Pneumaticindustryoutput419millionyuan,accountingforworldNo.10.(2)thecurrentsupplyanddemandprofilesThroughtheintroductionoftechnology,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.1998piecesofhomemadehydraulicoutputmillion.salesofabout28billion(ofwhichabout70%mechanicalsystems);aerodynamicpiecesyieldmillion.salesofaboutbillion(ofwhichabout60%ofmechanicalsystems);Sealsoutputofabout800million.salesofabout10billion(ofwhichabout50%mechanicalsystems).AccordingtotheChinaHydraulicPneumaticSealsIndustryAssociation1998annualreport,hydraulicproductsalesrateof97.5%(101%forhydraulic),pneumatic%,%sealed.Thisfullyreflectsthebasicmarketingconvergence.Myhydraulic,pneumaticandsealingindustryhasattainedagreatdealofprogress,butwithmainframedevelopmentneeds,andtheworld''sadvancedlevel,therearestillmanygaps,mainlyreflectedintheproductvariety,performanceandreliability,andsoon.Hydraulicproductsasanexample,productsabroadonlyone-third,lifeforhalfabroad.Inordertomeetkeymainframe,andmainframeimportsofmajortechnologyandequipmentneeds,everyyearalargenumberofhydraulic,pneumaticandsealingproductsimports.Accordingtocustomsstatisticsandtheanalysisofdata,in1998hydraulic,pneumaticandsealsintheimportabout200million.dollars,Hydraulicwhichaboutbilliondollars,aerodynamicnearly030million.dollars,sealedabout030million.dollars.comparedwithaslightdeclinein1997.Bysums,currentlyimportedproductsonthedomesticmarketshareofabout30%.1998piecesofthedomesticmarketdemandforhydraulictotalofaboutsixmillion,thetotalsalesofnearly40billion;aerodynamicpiecesofthetotaldemandofabout5million,withsalesmorethan700millionyuan;Sealstotaldemandofaboutbillion.totalsalesofaboutbillion.Third,thedevelopmenttrendofthefuture1,affectthedevelopmentofthemainfactors(1)productdevelopmentability,andtheleveloftechnologicaldevelopmentandspeedcannotcompletelymeettheadvancedmainframeproducts,majorequipmentandtechnologyimportedequipmentandmaintenancesupport;(2)thenumberofenterprisesmanufacturingtechnology,thelevelofequipmentandmanagementstandardsarecomparativelybackward,coupledwithastrongsenseofquality,resultinginlowlevelsofproductperformance,quality,Reliabilitypoorservicesinatimelymanner,lackofusersatisfactionandtrustofthebrand-nameproducts;(3)industryspecializationofproductionlow,scatteredstrength,lowrepeatserious,betweenregionsandenterprisesofconvergenceproducts,blindlycompetewitheachother,drivingdownprices,thedeclineofenterprisereturns,lackoffunds,liquiditydifficulties,productdevelopmentandtechnologicaltransformationisinadequateandseriouslyrestrictedtheindustrytoimprovetheoveralllevelofcompetitionandtheincreaseofstrength;(4)TheinternationalizationofthedomesticmarketandtheincreasingdegreeofforeigncompanieshaveenteredtheChinesemarketandparticipateincompetitionwiththedomesticprivateandcooperativeenterprises,individuals,foreign-fundedenterprises,suchastheriseofstate-ownedenterprisesduetothegrowingimpact.2,thedevelopmenttrendAsthesocialistmarketeconomycontinuestodeepen,hydraulic,pneumaticandsealingproductsinthemarketsupplyanddemandandthereisagreaterchange,longagotoa"shortage"oftheseller''smarkethasbasicallybecomea"structuralsurplus"ofthecharacteristicsofthebuyer''smarketplace.Overallcapacity,isalreadyinoversupplysituation,inparticularthegenerallowlevelofhydraulic,pneumaticandseals,thegeneraloversupply;andthehostofurgenthigh-techhigh-parameter,highvalue-addedhigh-endproducts,andtheydonotsatisfythemarketneeds,onlydependentonimports.ChinajoinstheWTO,itsimpactmaybeevengreater.Therefore,the"15"duringthegrowthoftheoutputvalueofindustry,mustnotdependonvolumegrowthandtheindustryshouldaddressthestructuralproblemsoftheirown,increasetheintensityoftheadjustmentoftheindustrialstructureandproductmix,is,weshouldrelyontheimprovementofquality,andpromotetechnicalupgradingofproductstomeetmarketdemandandstimulating,seekgreaterdevelopment.