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外文翻译--液压支架的发展与前瞻.doc

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外文翻译--液压支架的发展与前瞻.doc

英文文献Hydraulicsupportsdevelopmentandperspective1domesticandforeignhydraulicsupportdevelopmentoutlineThehydraulicsupportistakethehighpressuredliquidasapower,bycertainhydraulicelementcylinder,pipeaccessoryonekindofsupportandthecontrolroofminingcoalworkingsurfaceequipmentwhichbecomeswithsomesteelworkcombination.Hastheintensitytobehigh,thetravelingspeedisquick,supportsandprotectionsperformancegood,safereliableandsooncharacteristics.Sincethe20thcentury50s,thehydraulicsupporthasbecometheminingcoalworkingsurfacecoreequipmentgradually,intheworldmainlyproducedthecoalcountrytoputinthemassivemanpowerandresourcesandthefinancialresourcecarriesontheresearchdevelopmenttoit.Atpresent,tendstobematuretakethehydraulicsupportasthemainbodysupportsandprotections,intheworldalreadythemanufacturingseveralhundredkindofframesandtheuptotenthousandkindofmodelshydraulicsupport,meetseachkindofcoalbedminingsupportsandprotectionsneed.Onthecentury60s,ourcountryoncehadalsodeveloped10kindofhydraulicsupports,forvariousreasonshasnotobtainedthepromotedapplication,thehydraulicsupportisinthedevelopment,thelaboratorystagethe70sfromBritain,Germany,Poland,theformerSovietUnionandsoonmainlyproducethecoalcountrytointroduceseveral10setofhydraulicsupportssuccessively.Aftertheunceasingexploration,theuse,thedigestionandthesummary,makeeachtypethesupport,itisthebeginningwhichthedomesticproducthydraulicsupportdevelopsthe80shydraulicsupportresearchanddevelopmentareintheinnovationtoenhancethestage,develops30kindofnewframeoneafteranother,makestheZZseries,theXYseries,theZDseriesandsoondifferentspecification,andwidelyusesinthestateownedlargeandmiddlescalecoalmines,obtainsthegoodeconomicefficiency90sspecialhydraulicsupportsdevelopmentobtainstherapidlyexpand,themechanizedshopnetsupport,thewatergranulatedsubstancebackfillsupport,thereasonsupport,theforcesupport,putsgoesagainstthecoalsupportandsoontobepublishedoneafteranotherThepresentcenturyalongwiththecomputertechnology,theautomatedtechnologyspopularizationandtheapplication,hydraulicsupportscontrolmakesthebreakthroughprogress,graduallytotheprogrammedcontrol,thenumericalcontrol,theremotecontrolandtheautomatedcontrolmakesgreatstridesforward.2DomesticandforeignhydraulicsupportdifferenceThedomesticallyproducedsupportinthetechniqueofmanufacture,thematerialqualityperformance,theprocessingcraft,thecontrolsystemandinthesealingpropertycompareswiththeoverseasadvancedcountrieshastheverybigdisparity.2.1ProcessingmanufactureaspectAccordingtotherelatedsynthesispickstheengineersandtechnicianstoreflectthatthedomesticproducthydraulicsupportsprocessingtechnology,theservicelife,theoperationalperformance,usedthematerialqualitysofarnotyettoachievein1979tointroduce100setofsupportstechnicallevels.IfstructuralmaterialGermanyusestheST52materialitsyieldstrengthis500MPa,butourcountryuses16Mnmaterialyieldstrengthisonly350MPaValveclassOverseashasusedthecopperalloyvalveshellandthehighstrengthstainlesssteelvalvecore,ourcountryhasbeenthe45steeladdsthesuperficialheattreatmentInprocessingcraftTheoverseascylinderendophragmisduplicateplates,thedomesticproductfordoesnotplate,causesthecolumnprematuretopresentthespotintheuseprocess,scratchesandsoonsealstoleakthefluidphenomenon,affectsthesupportsandprotectionseffect.Thedomesticproducthydraulicsupportandtheoverseasproductionshydraulicsupportcomparestheaveragetoreduce23servicelives.2.2ControlsystemaspectThedomesticproducthydraulicsupportcontrolsystemsresearchanddevelopmentareatbackwardnesscondition,restrictedthesupporttomoveseriouslysupposesthespeedtheenhancementandthesynthesispickstheeconomicefficiencythedisplay.Intheworldseveralmainlyproducethecoalgreatnationtoenhancethesupportcontrolsystemachievementthesynthesistopickthroughouttheeconomicefficiencytheimportantmeansthatthe20thcentury60susemanualcontrolstheoperatingsystemstraightthe70susetheforerunnercontrolsystem,alongwithitBritainfirstproposedthatthedevelopmentbatterysolutioncontrolsystem,the80stendstobematurethe90sladdercompanydevelopstheentireworkingsurfacebatterysolutioncontrolsystem,followsWistertocutdownLiyatheBeiruitecompanytodevelopmoreadvancedPM3,PtheM4batterysolutioncontrolsystem.PresentcountriesandsoonUS,Germany,Britain,Australiabasicallyallaretheprogrammablebatterysolutioncontrols,butourcountrystillusedthehandcontrolsystem.2.3HydraulicelementaspectHydraulicelementsresearchanddevelopmentspeedlagsbyfarinthehydraulicsupportneedtodevelop.Hydraulicsupportsreliabilitymainlyreliesonhydraulicelementsreliability,thehydraulicsupportinthecoalmineproductionapplieswhethertosucceed,thekeyliesinhydraulicelementstechnicalperformancewhethertomeettherequirements.Overseasusesthegreatcurrentcapacitysafetyvalve,thefluidtocontroltheconewayvalve,thecutoffvalveatpresent,initiallytosupportthestrengthmaintainingvalveandthecolumnreturnstothefluidvalvefast.Tohydraulicelementsstructuralstyle,thegeometrysize,thechoiceofmaterial,theheattreatmentmethodandthesurfacetreatmentandsoonvariousaspectshaveconductedthethoroughresearchandthedevelopment.Developsonebatchofsealingpropertytobegood,thesensitivityhigh,enterstherowoffluidabilityinabigway,theantiimpactloadstrongeachkindofhydraulicelement,adaptsthehydraulicsupportoperatingperformancerequest.Butourcountrylagstothiskindofhydraulicelementresearchanddevelopment,atpresentstillcontinuedtouseonthecentury80sproducts,hasnotformedthehydraulicelementuniversalization,theseriation,thestandardization.3HydraulicsupportprospectsfordevelopmentforecastInviewofthefactthatsciencesandtechnologyshighspeeddevelopment,newtechnology,newcraft,newmethod,thenewmaterialwillapplyandthecomputertechnologyunprecedentedexpansionunceasingly,hydraulicsupportsfuturedevelopmenthastheveryattractiveprospect3.1Thedesignideasrenewal,thehydraulicsupportdevelopsarevolutionMustconsidertheenvironmentinthehydraulicsupportdesigntheattribute.Becausehydraulicsupportsworkingconditionisbad,thehuman,machinetheenvironmentreciprocityquestionappearsmoreimportant.Thegreendesignisthechoiceofmaterial,theproductmix,thetechnique,theoutwardappearancemodellingandcolormatchingaccordingtocertainrule,adoptsartisticthemethodtoperformtheingeniousfusion,manifeststhemanmachineenvironmentsystemsharmoniousunificationfully.Theunwieldyhydraulicsupportimagesafe,reliable,easytobeserviced,consumesenergy,thehighefficiency,thehandsomeappearancetosubstitutelowly.Thiskindofgreendesign,itisnotonlyfearedtheenvironmentandtheresourcesbothmustmeettheeconomicdevelopmentneeds,andmustmeetthehumansurvivaldevelopment

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