外文翻译--液压支架的发展与前瞻.doc

英文文献Hydraulicsupportsdevelopmentandperspective1domesticandforeignhydraulicsupportdevelopmentoutlineThehydraulicsupportistakethehigh-pressuredliquidasapower,bycertainhydraulicelement(cylinder,pipeaccessory)onekindofsupportandthecontrolroofminingcoalworkingsurfaceequipmentwhichbecomeswithsomesteelworkcombination.Hastheintensitytobehigh,thetravelingspeedisquick,supportsandprotectionsperformancegood,safereliableandsooncharacteristics.Sincethe20thcentury50s,thehydraulicsupporthasbecometheminingcoalworkingsurfacecoreequipmentgradually,intheworldmainlyproducedthecoalcountrytoputinthemassivemanpowerandresourcesandthefinancialresourcecarriesontheresearchdevelopmenttoit.Atpresent,tendstobematuretakethehydraulicsupportasthemainbodysupportsandprotections,intheworldalreadythemanufacturingseveralhundredkindofframesandtheuptotenthousandkindofmodelshydraulicsupport,meetseachkindofcoalbedminingsupportsandprotectionsneed.Onthecentury60s,ourcountryoncehadalsodeveloped10kindofhydraulicsupports,forvariousreasonshasnotobtainedthepromotedapplication,thehydraulicsupportisinthedevelopment,thelaboratorystage；the70sfromBritain,Germany,Poland,theformerSovietUnionandsoonmainlyproducethecoalcountrytointroduceseveral10setofhydraulicsupportssuccessively.Aftertheunceasingexploration,theuse,thedigestionandthesummary,makeeachtypethesupport,itisthebeginningwhichthedomesticproducthydraulicsupportdevelops；the80shydraulicsupportresearchanddevelopmentareintheinnovationtoenhancethestage,develops30kindofnewframeoneafteranother,makestheZZseries,theXYseries,theZDseriesandsoondifferentspecification,andwidelyusesinthestate-ownedlargeandmiddlescalecoalmines,obtainsthegoodeconomicefficiency；90sspecialhydraulicsupportsdevelopmentobtainstherapidlyexpand,themechanizedshopnetsupport,thewatergranulatedsubstancebackfillsupport,thereasonsupport,theforcesupport,putsgoesagainstthecoalsupportandsoontobepublishedoneafteranother；Thepresentcenturyalongwiththecomputertechnology,theautomatedtechnologyspopularizationandtheapplication,hydraulicsupportscontrolmakesthebreakthroughprogress,graduallytotheprogrammedcontrol,thenumericalcontrol,theremotecontrolandtheautomatedcontrolmakesgreatstridesforward.2DomesticandforeignhydraulicsupportdifferenceThedomesticallyproducedsupportinthetechniqueofmanufacture,thematerialqualityperformance,theprocessingcraft,thecontrolsystemandinthesealingpropertycompareswiththeoverseasadvancedcountrieshastheverybigdisparity.2.1ProcessingmanufactureaspectAccordingtotherelatedsynthesispickstheengineersandtechnicianstoreflectthatthedomesticproducthydraulicsupportsprocessingtechnology,theservicelife,theoperationalperformance,usedthematerialqualitysofarnotyettoachievein1979tointroduce100setofsupportstechnicallevels.Ifstructuralmaterial:GermanyusestheST52materialitsyieldstrengthis500MPa,butourcountryuses16Mnmaterialyieldstrengthisonly350MPa；Valveclass:Overseashasusedthecopperalloyvalveshellandthehighstrengthstainlesssteelvalvecore,ourcountryhasbeenthe45#steeladdsthesuperficialheattreatment；Inprocessingcraft:Theoverseascylinderendophragmisduplicateplates,thedomesticproductfordoesnotplate,causesthecolumnprematuretopresentthespotintheuseprocess,scratchesandsoonsealstoleakthefluidphenomenon,affectsthesupportsandprotectionseffect.Thedomesticproducthydraulicsupportandtheoverseasproductionshydraulicsupportcomparestheaveragetoreduce23servicelives.2.2ControlsystemaspectThedomesticproducthydraulicsupportcontrolsystemsresearchanddevelopmentareatbackwardnesscondition,restrictedthesupporttomoveseriouslysupposesthespeedtheenhancementandthesynthesispickstheeconomicefficiencythedisplay.Intheworldseveralmainlyproducethecoalgreatnationtoenhancethesupportcontrolsystemachievementthesynthesistopickthroughouttheeconomicefficiencytheimportantmeansthatthe20thcentury60susemanualcontrolstheoperatingsystemstraight；the70susetheforerunnercontrolsystem,alongwithitBritainfirstproposedthatthedevelopmentbatterysolutioncontrolsystem,the80stendstobemature；the90sladdercompanydevelopstheentireworkingsurfacebatterysolutioncontrolsystem,followsWistertocutdownLiya-theBeiruitecompanytodevelopmoreadvancedP-M3,P-theM4batterysolutioncontrolsystem.PresentcountriesandsoonUS,Germany,Britain,Australiabasicallyallaretheprogrammablebatterysolutioncontrols,butourcountrystillusedthehandcontrolsystem.2.3HydraulicelementaspectHydraulicelementsresearchanddevelopmentspeedlagsbyfarinthehydraulicsupportneedtodevelop.Hydraulicsupportsreliabilitymainlyreliesonhydraulicelementsreliability,thehydraulicsupportinthecoalmineproductionapplieswhethertosucceed,thekeyliesinhydraulicelementstechnicalperformancewhethertomeettherequirements.Overseasusesthegreatcurrentcapacitysafetyvalve,thefluidtocontrolthecone-wayvalve,thecut-offvalveatpresent,initiallytosupportthestrengthmaintainingvalveandthecolumnreturnstothefluidvalvefast.Tohydraulicelementsstructuralstyle,thegeometrysize,thechoiceofmaterial,theheattreatmentmethodandthesurfacetreatmentandsoonvariousaspectshaveconductedthethoroughresearchandthedevelopment.Developsonebatchofsealingpropertytobegood,thesensitivityhigh,enterstherowoffluidabilityinabigway,theanti-impactloadstrongeachkindofhydraulicelement,adaptsthehydraulicsupportoperatingperformancerequest.Butourcountrylagstothiskindofhydraulicelementresearchanddevelopment,atpresentstillcontinuedtouseonthecentury80sproducts,hasnotformedthehydraulicelementuniversalization,theseriation,thestandardization.3HydraulicsupportprospectsfordevelopmentforecastInviewofthefactthatsciencesandtechnologyshighspeeddevelopment,newtechnology,newcraft,newmethod,thenewmaterialwillapplyandthecomputertechnologyunprecedentedexpansionunceasingly,hydraulicsupportsfuturedevelopmenthastheveryattractiveprospect3.1Thedesignideasrenewal,thehydraulicsupportdevelopsarevolutionMustconsidertheenvironmentinthehydraulicsupportdesigntheattribute.Be