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英语翻译英文原文ScraperconveyorofthestatusquoanddevelopmenttrendoftechnologyAbstractTheFacescraperconveyorofthemachineanditshead,tail,thecentraltrough,ringlinked,softstartdevices,componentsofthetechnicalstatusquoanddevelopmenttrend,andmadeChinasdevelopmentscraperconveyorTrend.Keywordsscraperconveyorwithtwo,components,developmenttrends.Inrecentyears,withhighyieldandhighefficiencyoftherapiddevelopmentofintensivemine,thecoalmineinaminetoachieveahighdegreeofconcentrationofwellsaproductionmodel.Facethelongarmasthemaintransportationequipment,thescraperconveyortransportcapabilitymainlybyhighyieldandhighefficiencyoftheproductioncapacityoftheminetodecide,butalsodeterminesthescraperconveyortrendofdevelopment.1TechnologystatusSincethe1980s,bothathomeandabroadscraperconveyortothelargevolume,longdistance,highpower,highintensity,highreliabilityandlonglifedirection.Atpresent,thelargestforeignFullyfacescraperconveyortotransportvolumehasreached6000t/h,installedpower4800kW,distance450m.Domesticindependentresearchanddevelopmentofthescraperconveyortransportvolumehasreached3500t/h,installedpower3700kW,distance300m.WithGodEast,andotherlargecoalbase400mfacetheemergenceofChinamadescraperconveyorwillbemovinginthedirectionofmorelargescale.However,volume,distanceandtheincreaseofpowerbymanyfactors.Firstofall,theheightofthecentraltroughshouldnotbetoohigh,otherwisetheywillbeaffectedwithcoaleffect.Second,theconveyorslengthshouldnotbetoolong,Willreducetherateofadvance.Thenthemostimportantfactorsisalsokeycomponentsofthetechnicalperformanceandlifeexpectancy.Therefore,thescraperconveyortothedevelopmentoflargescale,highperformancecomponentsoftheRDwillbecomethenextscraperconveyorfocusonthedevelopment,softstarttechnology,thestatusoftesting,runningstatecontroltheuseofmechanicalandelectricalintegrationtechnologywillbeScraperconveyorintothefuturedevelopmentofanimportantsymbol2Yuanpartsofthetechnicalstatusquo2.1HeadWiththefullymechanizedcoalfaceofrapidlyincreasingproductionapacity,scraperconveyorunloadinghasbeendifficulttomeettherequirementsofdomesticandforeignlargevolumeofheavyscraperconveyoradoptcrosslateralinstitutionsunloaded,theagencyafterseveralgenerationsofimprovementsintheabilitytooffload,Efficiency,lifeandotheraspectsofabigincrease.Atthesametime,unloadingahighdegreeofreducedsupportforthefullymechanizedcoalmininghasbroughtconvenience.2.2TailForlongdistance,highpowerscraperconveyor,thechaintensionneedgreaterflexibilitytrip,bothathomeandabroadusingretractabletail,andisdividedintomanualandautomatictightchaintightchain.Manualtightchainsystemisregularlymeasuredbythechainofartificialtension,stretchingthetail,whichcannotguaranteethechainwillalwaysbeinthebeststateoftensionandtheautomaticsystemistheidealtightchainoftension,asshowninFigure1.Thesysteminthechainandthenose,taildrivesprocketchainfromthebottom,atensionsensorplacement,inaccordancewiththeactualchainoftakeuptensioncontrolthefueltank.Thisautomaticuseofthetightchain,conveyorchainoperationwillalwaysmaintainthebeststateoftension,toextendthelifeofthechain,reducingdowntime.Figure1automaticallytensioningsystem2.3SprocketcomponentsSprocketscraperconveyorcomponentsisthekeycomponent,anditsdevelopmenttrendofimprovingthereliabilityofsprocketcomponents,thepriceincreasesprocketaccuracy,improvingheattreatmentprocesstoextendthelifeofsprocket.Atpresentsprocketcomponentsinthestructureofuseofdoublerowtaperedrollerbearings,lightoillubrication,noseandtailofthesprocketcomponentsarethesame,throughdifferentgearreducercouplingconnectionwiththereplacementofundergroundReducer,notdemolitionsprocketusinghighstrengthalloysteel,ofquenchingthehardnesstoeatHRC55,effectivehardeningdepthof10mmandabove,theservicelifeofupto400to5milliontofthemedia.Inaddition,fromsprocketonthetoothtobeimproved,forexample,acompanydesigntheGRsprocketandthereisgreatdifferencebetweenconventionalsprocket,whichalwayshasthreesprockettoothledtheentireload.3toothcontactwillinevitablyreducethewearchainandsprocket,therebyextendingthelifeofthechainandsprocket,reducingthechainelongation,powertransmissionefficiencyishigher.2.4SoftstartdevicesForeignadvancedconveyortransmissionuseofsoftstarttechnology,inscraperconveyoronthesuccessfuluseofthesoftstartmainvalvecontroldevicefilledhydrauliccoupler,CSTcontrollablestartandtheexchangeofelectricaltransmissionsystem,suchasFrequencyControl.Becausethereisnodomesticmaturetechnologiesandproducts,theChinamadehighpowerscraperconveyorusedinsoftstartdeviceforallimportedproducts.Figure2wasdevelopedbyGermanyfilledhydraulicvalvecontrolDTPcoupler.2.4.1filledhydraulicvalvecontrolcoupledwiththeprincipaltechnicalcharacteristics⑴canachievetheemptyscraperconveyorstartandoverloadprotectionChangecanbeachievedthrough⑵scraperconveyorthefrequentstart,withoutlimitationstartfrequency⑶throughhydrauliccouplerdivisionswillalsoreorderthemultidrivecanbeachievedundertheloadbalancing⑷slowpostmortemcanbelinked⑸dualchamberdesign,compact,powertransmissioncomponentswithoutmechanicalcontact,highreliability.⑹withwaterasaworkingfluid,safeandconvenientandcheap,throughpipesorwatersupply,drainagetubethroughthepumprow,rowofpressurefromthemainhydraulicmotordrivencycleproducedbythepilotoftheportfoliodirectlytothevalveTocontrolthewatercycle⑺withoutaffectingthepowertransmissioncircumstances,Changetoheatthrough.Figure2DTPvalvecontrolledoilfilledhydrauliccoupler2.4.2CSTcontrolledtransmissionsystemactivatedthemaintechnicalcharacteristics⑴inanyloadcantrackanylaunchcurve,thespeedofplusorminusanyadjustment⑵relativespeedhydrauliccoupler,thetransmissionefficiency⑶anarbitrarycontrolledundertheconditionsofparkingcapacity⑷canbedriventoachievemorebalanceofpowerbetweenthehighprecision,balanceaccuracyupto98percent⑸conveyorofallmechanical,electricalsystemoverloadprotection,theprotectionsystemfastresponse⑹berunninglowontime,andcashinginonthetrendpostmortemchain⑺scenedebuggingsimple,itiseasytomodifytheparametersonlineanddebugging.2.4.3ACmotortechnologythemaintechnicalcharacteristics⑴andothersoftstartmodecomparedtothefullrealizationofelectricalsoftstartcontrol,scraperconveyordrivesystemandpowersupplysystemtomaximizethesimplification⑵startuptimecanbeloadedwithselfregulation⑶achievedascraperconveyorloadedwithemptyandthesmoothstartup⑷significantlyreducethestartingcurrentandimprovethequalityofelectricitysupplygrid,powergridtoreduceimpact.2.5CentralgrooveCentraltroughconveyorofthewholefaceofthetrunk,itslifeisameasureofanimportantindicatoroflife.AtpresentthecentraltroughuseofΣtroughshapedcrosssectionforthewholecastbackcoverweldingstructure,lifeexpectancyhasreached10milliont.Tofurtherimprovetheservicelifeofthemajormanufacturersofdomesticandforeigncentraltroughofform,structureandmaterialshavedoneagreatdealofresearch.SuchasGermanyofacompanythroughresearchanddevelopment,bethatindifferentsectionsofthemineshaftsforalargenumberofCentralTestandeventuallyfound,andΣtroughshapedcrosssectionforcomparison,curvedsectionslotforthescrapertohelpwiththetroughincontactwiththesideofthesmall,therebyreducingfrictionandreducepowerconsumption,extendthecentralslotandscraperlife.ΣscraperandarcshapedcrosssectionandthesectionforsurfacetroughcomparisonshowninFigure3.Figure3scraperandΣarcshapedcrosssectionandthesectionforsurfacetroughcomparisonFromtoptobottomforaslotonthedesign,showninFigure4,fromtoptobottomslotforthesame,youcanchooseanythicknessandwidthoftheplateinthecentraltroughdesignmakesforgreaterflexibility.SlotforeachboardandthecentralslotbetweenthetwoWeld,thecentralsideofthetroughoffourseam,onlyontheinsideofthetanktohelpwithstandthewearandtearaseam,evenifitwaspolishedwelds,Thecentraltroughcanmaintainahighdegreeofstability.
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