液压支架外文翻译液压支架电液控制系统使用中的问题及对策.docx
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液压支架外文翻译液压支架电液控制系统使用中的问题及对策
本科生毕业设计外文翻译
学生姓名:
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专业:
机械设计制造及其自动化
班级:
机05-3班
指导教师:
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Inhydraulicsupportbatterysolutioncontrolsystemusequestionandcountermeasure
ZhangMingli(张命林)
(ZhengzhoucoalminemechanicalgroupLimitedliabilitycompanyHenanZhengzhou450013)
LuoYueyong(罗跃勇)
(BeijingworldMaKebatterysolutioncontrolsystemLimitedcompanyBeijing100013)
Abstract:
Tofurtherdisplaythesupportbatterysolutioncontrolsystem'sperformance,demonstratesthesupportbatterysolutioncontrolsystem'ssuperiorityfully,Inmanyyearresearch'sfoundations,elaboratedsystematicallythesupportbatterysolutioncontrolsystemseveralaspectswhichdisplaysinthedomesticandforeignapplicationconditionandthepresentinfluenceandtherestrictiondomesticproductsupportbatterysolutioncontrolsystemuseandtheperformance.ProposedtheformulationbatterysolutioncontrolsystemGuanyuanpartmanufacturingunifiedstandards,theunificationfilteringelementprofessionstandardandtheestablishmentbatterysolutioncontrolsystemworkingsurfacepreventsthecleanlinesscontrolsystem'simportancewhichonowninitiativeandthepassivefiltrationprotectionunifies,Establishestheperfectfiltrationprotectionsystem,furtherdisplaysthedomesticallyproducedsupportbatterysolutioncontrolsystemperformance.
Keyword:
Hydraulicsupport;Batterysolutioncontrolsystem;Filtrationsystem;Filterfineness
1、hydraulicsupportbatterysolutioncontrolsystem'ssuperiority
Thehydraulicsupportbatterysolutioncontrolsystemisbyelectronicinstallationsandthehydrauliccircuitcontrolportionandsoonmonolithicintegratedcircuit,sensoriscomposed,mayneedtocontrolthehydraulicsupportautomaticperformanceaccordingtotheproductionthesystem.
①Behindmayfallthehydraulicsupport,totrytobreakupafight,torisetheframe,thepassagefrontpartconveyer,topulltheconveyer,toreceiveprotectshelpstheboard,toextendprotectshelpstheboard,theatomizationwatersprayandputsgoesagainstmovementsandsooncoaltochangebytheoriginalman-powermanualoperationthebatterysolutionautomaticcontrol,thesequencingtooperate,Canmatchwiththehighlyeffectivecoalminingmachinespeedsuptheworkingsurfaceadvancementspeed,obviouslyenhancestheminingcoalworkingsurfacetheproductionefficiency.
②Mayrealizewithmachinetheautomatedwork,reducestheoperatorswhothelaborintensity,theimprovementworkcondition,reducestheworkingsurface.
③Maysolveunderthespecialgeologicalconditionandthedifficultworkingconditiontechniqueofproductionquestion,forexample,inthethincoalbedworkingsurfacepersonnelareunableundertheconditionwhichoperatesintheworkingsurface,mayrealizethenon-hominizationworkingsurface(towithcoalplowsystemcoordinationuse).
④Mayrealizethemulti-framessimultaneouslytopushtheconveyerandmaythequotaadvancement,guaranteedthatconveyergentlecurving,middleavoidsthetroughattachmentpointhavingtheoversizedstress,lengthensconveyer'slife,simultaneouslymayprotectworkingsurfaceconveyer'sstraight,realizestheworkingsurfacestraightpassage.
⑤Easytorealizethebeltpressuretomovetotheframe,andpreventstherooffailureaccidentregardingtheprotectionroof'sstabilitytobeadvantageous.
⑥Maycontrolthesupportinitiallytosupportthestrengthwell,obviouslyimprovesthesupportsandprotectionseffectandtheworkingsurfacemanagementlevel.
2、domesticandforeignapplicationsituation
Overseasstartedinthe1970stodevelopthedevelopmenthydraulicsupportwiththeelectricallycontrolledsystem,inthe80senteredthesubstantiveapplicationstage.Tothe90s,thehydraulicsupportbatterysolutionautomaticcontroltechnologyhadbeenalreadymature,theoperatingperformanceandthereliabilityhavebeenabletosatisfytheoperationrequirements,thusdevelopsveryrapidly,becomesproducesthecoalcountrysynthesistopicktheworkingsurfacehydraulicsupport'sstandardcontrolequipmentdeveloped.Accordingtoincompletestatistics,hadmorethan300synthesestopicktheworkingsurfaceusebatterysolutioncontrolhydraulicsupportatpresent,mainlyconcentratesincountriesandsoonUS,Australia,Germany,China,Slovenia,SouthAfrica,Russia,Poland,Mexico,Canada.AtpresentChinahas131synthesestopicktheworkingsurfaceusebatterysolutioncontrolsystem,thePM31batterysolutioncontrolsystemisthepresentdomesticproducthydraulicsupport'smainstreambatterysolutioncontrolsystem,occupiesthedomesticproducthydraulicsupportbatterysolutioncontrolsystemmarket80%aboveshares.
3、atpresentfacesquestion,reasonandkeytothesituation
Alongwithbatterysolutioncontrolsystem'spromotedapplication,alsohasmetsomequestions,isrestrictingthebatterysolutioncontrolsystem'suseandtheperformancefulldisplay,concretemanifestationinthefollowingseveralaspects:
①Thesystemhydraulicelementfailureratecomparesthecompletesetintroductionsystemtocomparehighsomewhat,speciallyinworkingsurfacetrialproductionandproductioninitialperiod.Inrecentyears,alongwiththehomeproductionprocessinglevel'senhancement,hydraulicelementsandsoonsupportaswellasbatterysolutioncrossvalvehasrealizedthemanufacturedomestically,carriesonthesystemsassemblytogetherthroughseveralfactories,thishadanewproblem,eachfactoryactsaccordingtotherespectiveproductperformancerequestdeterminationmanufacturestandard,buthasnotconsideredtheentirebatterysolutioncontrolsystem'sperformancerequirementTakethecleanlinessastheexample,thedomesticsupportintheproductionknewthebatterysolutioncontrolswhenthesupportcontinuestousetheoriginalhandcontrolsystemsupportproductioncleanlinesscontrolstandard,thiscreatesthesupportuseproblem,butbecausethebatterysolutioncontrolcrossvalverequestshightothecleanliness,entiresupportbatterysolutioncontrolsystemuseinitialperiodelectromagnetismfirstpilotvalveandmainvalve,becausethepollutiondamageisserious,thefailurerateincreases.Generallyrequiresperiodoftime(1-2months)aftertheuse,thesystemcanrestorenormally.Thisistakehasagoodfiltrationsystemasapremise.Iffiltrationsysteminthisprocess,becausepollutestheseriousjammingtoexpire,willcreatethehydraulicsystemviciouscircle,thesystemfailureratefurtherincreasesreally,evencreatesthesystemparalysis.Atpresent,urgentneedsaccordingtothebatterysolutioncontrolsystemrequest,theformulationbatterysolutioncontrolsystemGuanyuanpartprocessingmanufacturestandard,thusguaranteestheentirebatterysolutioncontrolsystem'sreliablesteadyoperation.
②Becausethebatterysolutioncontrolcrossvalvestructureandtheperformanceneedthemediumcleanlinesstobehigh,thesystemnecessary25mprecisionfilter,setthenewrequesttothemediumandtheemulsionallocatedproportion.Alongwiththeseyearsbatterysolutioncontrolsysteminthedomesticpromotedapplication,appearedgenerally,becausetheemulsionchoiceunqualified,thedensityallocatedproportioncausesinthemediumtostickthethickshapematerialseparationunreasonable,sothattheworkingsurfacefiltrationsystemstopsupseriously,thesupportslowinone'smovementsorcannotact,filterelementbigareajammingexpiration.
③Filtersthesystemstandardnottobeunified,thepartmanufacturedomesticallyfilterelementmanufacturequalityisunqualified,takessubstandardproductsasfineproducts,causesthebatterysolutioncontrolsystemnottobeunstable,failureratehigher.
Atpresentdomesticisnotunifiedtofilterfineness'sdefinitionvariousprofessionsstandard,evensomefilterelementManufacturerandtheuserdonotknowthefilterfinenessthedefinitionmethod,butinternationallyhasseveraldifferentdefinitionmethodsaboutthefilterfineness,Hasthreekindsapproximately:
1)thehydraulicpressurefiltrationtechnologyusestipulation'sexperimentpowder(ISOMTD),theexperimentalstandardisISO16889"AdoptsCut-and-trymethodManytimes".EveryusesISO16889andtheexperimentalpowderisISOMTD,whenstandardfilter'sprecisionindicateswith(C).AfterthistestingmethodisjoinsthepilotsystemtheunificationdensityISOMTDpowder,inthefilterupstreamanddownstreamseparatelytakesasamplethetest,andchoosestheappropriateatleast5kindofparticlesizescope,determineswiththepelletcounterandcounts.Theupstreamsomesizepelletnumbercomparesthedownstreamsamesizepelletnumber,ratioisβ.βthevaluetakes5,20,75,200,2000decidesasenterpriseevaluationfilterlevel(thisratioisfilterefficiency).If5μmpelletupstreamanddownstreamratiois20,thenmayunderstandthatfor5μmthefilterefficiencyis95%.Usuallythelabellingfilterprecisionwrote=20,xfordeterminedβ=20thatparticlesize.
②Filterandsoonautomobile,machineshoptruck,commonequipmentlubrication,fueloilmostlyusetheSAE806bstandard.Itusesthebiggestpelletpassage,theuseglassmicrobeadortheACexperimentpowder,joinsthepowderafterthetestplatformfromthefilterdownstreamsample,thefluidtype(0.8or0.5μm)filtersandcollectsthepelletwiththemilliporefilter,thenexaminedunderthemicroscope.Ifdiscoversthebiggestpelletfor20μm,thenfilterfinenessfor20μm.
③Theaircleaner,thepurificationenvironmentusethefilter,usuallybyweightfilterefficiencynominalfiltrationcharacteristic.Thecustomsaidthatseveral“9”thefieldtestpowderisACFTD.Althoughabove3kindoffilter'sfilterfinenessdefinesdifferently,butbasedononetestmet