外文翻譯--工作面刮板輸送機技術現狀與發(fā)展趨勢.doc

英語翻譯英文原文ScraperconveyorofthestatusquoanddevelopmenttrendoftechnologyAbstract:TheFacescraperconveyorofthemachineanditshead,tail,thecentraltrough,ringlinked,soft-startdevices,componentsofthetechnicalstatusquoanddevelopmenttrend,andmadeChinasdevelopmentscraperconveyorTrend.Keywords:scraperconveyorwithtwo,components,developmenttrends.Inrecentyears,withhighyieldandhighefficiencyoftherapiddevelopmentofintensivemine,thecoalmineinaminetoachieveahighdegreeofconcentrationofwellsaproductionmodel.Facethelongarmasthemaintransportationequipment,thescraperconveyortransportcapabilitymainlybyhighyieldandhighefficiencyoftheproductioncapacityoftheminetodecide,butalsodeterminesthescraperconveyortrendofdevelopment.1TechnologystatusSincethe1980s,bothathomeandabroadscraperconveyortothelargevolume,longdistance,high-power,high-intensity,highreliabilityandlonglifedirection.Atpresent,thelargestforeignFully-facescraperconveyortotransportvolumehasreached6000t/h,installedpower4800kW,distance450m.Domesticindependentresearchanddevelopmentofthescraperconveyortransportvolumehasreached3500t/h,installedpower3700kW,distance300m.WithGodEast,andotherlargecoalbase400mfacetheemergenceofChina-madescraperconveyorwillbemovinginthedirectionofmorelarge-scale.However,volume,distanceandtheincreaseofpowerbymanyfactors.Firstofall,theheightofthecentraltroughshouldnotbetoohigh,otherwisetheywillbeaffectedwithcoaleffect.Second,theconveyorslengthshouldnotbetoolong,Willreducetherateofadvance.Thenthemostimportantfactorsisalsokeycomponentsofthetechnicalperformanceandlifeexpectancy.Therefore,thescraperconveyortothedevelopmentoflarge-scale,high-performancecomponentsoftheR&Dwillbecomethenextscraperconveyorfocusonthedevelopment,soft-starttechnology,thestatusoftesting,runningstatecontroltheuseofmechanicalandelectricalintegrationtechnologywillbeScraperconveyorintothefuturedevelopmentofanimportantsymbol2Yuanpartsofthetechnicalstatusquo2.1HeadWiththefullymechanizedcoalfaceofrapidlyincreasingproductionapacity,scraperconveyor-unloadinghasbeendifficulttomeettherequirementsofdomesticandforeignlargevolumeofheavyscraperconveyoradoptcross-lateralinstitutionsunloaded,theagencyafterseveralgenerationsofimprovementsintheabilitytooffload,Efficiency,lifeandotheraspectsofabigincrease.Atthesametime,unloadingahighdegreeofreducedsupportforthefullymechanizedcoalmininghasbroughtconvenience.2.2TailForlongdistance,high-powerscraperconveyor,thechaintensionneedgreaterflexibilitytrip,bothathomeandabroadusingretractabletail,andisdividedintomanualandautomatictightchaintightchain.Manualtightchainsystemisregularlymeasuredbythechainofartificialtension,stretchingthetail,whichcannotguaranteethechainwillalwaysbeinthebeststateoftensionandtheautomaticsystemistheidealtightchainoftension,asshowninFigure1.Thesysteminthechainandthenose,taildrivesprocketchainfromthebottom,atensionsensorplacement,inaccordancewiththeactualchainoftake-uptensioncontrolthefueltank.Thisautomaticuseofthetightchain,conveyorchainoperationwillalwaysmaintainthebeststateoftension,toextendthelifeofthechain,reducingdowntime.Figure1automaticallytensioningsystem2.3SprocketcomponentsSprocketscraperconveyorcomponentsisthekeycomponent,anditsdevelopmenttrendofimprovingthereliabilityofsprocketcomponents,thepriceincreasesprocketaccuracy,improvingheattreatmentprocesstoextendthelifeofsprocket.Atpresentsprocketcomponentsinthestructureofuseofdouble-rowtaperedrollerbearings,lightoillubrication,noseandtailofthesprocketcomponentsarethesame,throughdifferentgearreducercouplingconnectionwiththereplacementofundergroundReducer,notdemolition；sprocketusinghigh-strengthalloysteel,ofquenchingthehardnesstoeatHRC55,effectivehardeningdepthof10mmandabove,theservicelifeofupto400to5milliontofthemedia.Inaddition,fromsprocketonthetoothtobeimproved,forexample,acompanydesigntheGR-sprocketandthereisgreatdifferencebetweenconventionalsprocket,whichalwayshasthreesprockettoothledtheentireload.3toothcontactwillinevitablyreducethewearchainandsprocket,therebyextendingthelifeofthechainandsprocket,reducingthechainelongation,powertransmissionefficiencyishigher.2.4Soft-startdevicesForeignadvancedconveyortransmissionuseofsoft-starttechnology,inscraperconveyoronthesuccessfuluseofthesoft-startmainvalvecontroldevice-filledhydrauliccoupler,CSTcontrollablestartandtheexchangeofelectricaltransmissionsystem,suchasFrequencyControl.Becausethereisnodomesticmaturetechnologiesandproducts,theChina-madehigh-powerscraperconveyorusedinsoft-startdeviceforallimportedproducts.Figure2wasdevelopedbyGermany-filledhydraulicvalvecontrolDTPcoupler.2.4.1-filledhydraulicvalvecontrolcoupledwiththeprincipaltechnicalcharacteristicscanachievetheemptyscraperconveyorstartandoverloadprotection；Changecanbeachievedthroughscraperconveyorthefrequentstart,withoutlimitationstartfrequency；throughhydrauliccouplerdivisionswillalsore-orderthemulti-drivecanbeachievedundertheloadbalancing；slowpost-mortemcanbelinked；dual-chamberdesign,compact,powertransmissioncomponentswithoutmechanicalcontact,highreliability.withwaterasaworkingfluid,safeandconvenientandcheap,throughpipesorwatersupply,drainagetubethroughthepumprow,rowofpressurefromthemainhydraulicmotor-drivencycleproducedbythepilotoftheportfoliodirectlytothevalveTocontrolthewatercycle；withoutaffectingthepowertransmissioncircumstances,*Changetoheatthrough.Figure2DTP-valve-controlledoil-filledhydrauliccoupler2.4.2CSTcontrolledtransmissionsystemactivatedthemaintechnicalcharacteristicsinanyloadcantrackanylaunchcurve,thespeedofplusorminusanyadjustment；relativespeedhydrauliccoupler,thetransmissionefficiency；anarbitrarycontrolledundertheconditionsofparkingcapacity；canbedriventoachievemorebalanceofpowerbetweenthehigh-precision,balanceaccuracyupto98percent；conveyorofallmechanical,electricalsystemoverloadprotection,theprotectionsystemfastresponse；berunninglowontime,andcashinginonthetrendpost-mortemchain；scenedebuggingsimple,itiseasytomodifytheparametersonlineanddebugging.2.4.3ACmotortechnologythemaintechnicalcharacteristicsandothersoft-startmodecomparedtothefullrealizationofelectricalsoft-startcontrol,scraperconveyordrivesystemandpowersupplysystemtomaximizethesimplification；start-uptimecanbeloadedwithself-regulation；achievedascraperconveyorloadedwithemptyandthesmoothstart-up；significantlyreducethestartingcurrentandimprovethequalityofelectricitysupplygrid,powergridtoreduceimpact.2.5CentralgrooveCentraltroughconveyorofthewholefaceofthetrunk,itslifeisameasureofanimportantindicatoroflife.Atpresentthecentraltroughuseoftrough-shapedcrosssectionforthewholecastbackcoverweldingstructure,lifeexpectancyhasreached10milliont.Tofurtherimprovetheservicelifeofthemajormanufacturersofdomesticandforeigncentraltroughofform,structureandmaterialshavedoneagreatdealofresearch.SuchasGermanyofacompanythroughresearchanddevelopment,bethatindifferentsectionsofthemineshaftsforalargenumberofCentralTestandeventuallyfound,andtr