2023年全國碩士研究生考試考研英語一試題真題(含答案詳解+作文范文)_第1頁
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1、英文原文英文原文英文原文英文原文TheTechnicalSituationDevelopmentTrendofElectricalHaulageShearersAbstractAbstractAbstractAbstract:Inthispaper,thetechnicaldevelopmenthistytechnicalsituationofelectricalhaulageshearersfthinseamofChinaarerev

2、iewed,themaintechnicalparameters,generalstructure,serializationdevelopmenttrendofsuchshearesareintroducedKeywdsKeywdsKeywdsKeywds:thinseam;shearer;electricalhaulage;multi—motdriving;transversearrangementGermanEickhoffcom

3、panyAmericanJOYcompanythe70sin20centuriesdevelopsadirectcurrenttoleadtoadoptcoalmachineoneafteranother.Henceftheachmainlyadoptedcoalmachinearesearchamanufacturingacompanytoallleadtoadoptcoalmachinetocarryontotheelectrici

4、tyinthewldagreatdealofofstudyadevelopment.80Theageexpectedtoappearalternatecurrenttoleadtoadoptcoalmachinebehind.90Agethebigpowerelectricitywhichdevelopstogatherelectronicsmicroelectronicsinfmationmanagementcalculatintel

5、ligencetechniqueintheintegralwholeleadstoadoptcoalmachineliketheLSseriesofAmericanJOYcompanyBritishLongAirdoxtheElectraSLseriesofthecompanytheEDWSLseriesofGermanEickhofcompanythreewellsinJapanthreepondcreationtheMCLEDRof

6、seriesetc.theelectricityleadtoadoptcoalmachine.TheelectricityleadstoadoptcoalmachinegooddependablesexwithitsfunctionparameterGaoautomationdegreeGaooperationconveniencesupervisionprotectionexaminationthefunctionperfecteco

7、nomicperfmanceGaoDeng3sadvantagebequicklyexpedanusage.1Thefeignelectricityleadslongtoadoptthecoalmachinedevelopmentgeneralsituation1.1GermanEickhofcompanyAfter1976developpedsuccessfuldirectcurrenttoleadtoadoptcoalmachine

8、itwasbasictostoppedaliquidtopresstoleadadevelopmentresearchofadoptthecoalmachinecontinuouslydeveloppedvariousfmelectricitiestoleadtoadoptcoalmachine.90TheSLseriesthattheagedevelopishizontaltoarrangethealternatecurrentlea

9、dtoadoptcoalmachinecuttomowelectricalengineeringtoarrangeinshakingarm.AmongthemtheStypeelectricityleadstoadoptcoalmachinetopackmachinepowertoreachtoone580kWsbiggestleaddint998LSOkNs.SL300typeelectricityleadstoadoptcoalma

10、chinetoalwayspackmachinepowerone018kWstheadoptiondoublechangeoncethePinmachinedragalongonesystembiggestleadspeedtoreachto54.5msraisystemthesystemhavetohoverwitheachotheratypeapersonthemachinedialogueequipmentshealthilyfe

11、caststheonlinecontroldatadeliveretc.function.1.2:BritishLongAirdoxcompanyAfter1984developpedsuccessthefirstsetcuttomowelectricalengineeringtoarrangeatmanydecationswithhizontalelectricalengineeringsofshakethearmsgetElectr

12、a550typedirectcurrentledtoadoptcoalmachineatitsfoundationtopenlargementpowerthendevelopintoanElectra1000typedirectcurrenttoleadtoadoptcoalmachine.90AgeonthemodelfoundationoftheElectraseriesenlargementpowertheimprovementc

13、ontrolssystemdeveloppedELseriesmachinebranchinShanghaiagainsuccessivelydevelopsucceedcuttomowthealternatecurrentthattheelectricalengineeringlengthwayssetsouttoleadtoadoptcoalmachinecuttomowelectricalengineeringhizontalse

14、toutofbeapplicabletointhickwiththealternatecurrentofthinnercoalseamleadtoadoptcoalmachinesucceedappliedattheJincityHuaisouthXu2Zhoubigequalmineraldutybureau.3Techniqueacteristicsdeveloptrend3.1packmachinepowertoenlarge.T

15、hefunctionparameterraise(1)Thesinglesetpiecemowselectricalengineeringpowerallinthe400kWsabove.Themostadoptsthecoalmachinesinglesetpiecetomowelectricalengineeringpowertoalreadyarrive6OOkWthe7LS5sadoptsthecoalmachinesingle

16、setpiecetomowelectricalengineeringpowertobeupto750kWs.(2)Leadpowerallaboveinthe80kWsbiggestalready220kWs.(3)Alwayspackmachinepowermethanone000kWsreachtoone94OkWssuchasthe7LS5stheEL3000alwayspacksmachinepowerastallestas20

17、00kWs.(4)Leadspeedleaddinttosignificantlyraise.Leadthespeedl525msminleadthedint500kNsabove.Biggestleadspeed54.5msrain(SL300)biggestleaddint998kNs.(5)Cuttomowpoweraggrizementthesupptrompaystoprotectofrealizationtheenlarge

18、mentrollercutsdeeply.Thelis0yearagoscutdeeplymostlyisa630700Inll1swidespreadnowadopt10001200Zistocutdeeplyseparatelyattain1500Infnsestocutdeeply.(6)Theexaltationadoptsthecoalmachinecredibilitywithcanutilization.Theabroad

19、adoptscoalmachineadollarapartsadesignlifespan:Thewheelgear12500hsthebearingsis2000030000hsestheelectricalengineeringinsulatesthelifespan44000hstherolleradoptscoal640000ts.Adoptcoalmachinetogreatlyfixaperiodf2yearsthecoal

20、measure3005000000ts.Ourcountryrequeststhatadoptingcoalmachinecoalmeasuresa1502000000tsbutnotgreatlyfixsthemarginisverybig.3.2mediumhighpressurepowersuppliesAlongwithadoptcoalmachinetopackthemachinepowersignificantexaltat

21、ionthewknoodlescontinuouslylengthensthewholewknoodlescapacitywksoverthe5000kWsthenoodleslengthattain300ms.Indertoreducepowerlineroadtoexhaustqualityelectricalengineeringfunctionoftheexaltationpowersupplyhighpressurepower

22、supplyinthewidespreadadoption.Themainpowersupplygradehasa2300330041605000Vetc..3.3supervisionsprotectionsystemintelligenceturnThemodernelectricityleadstoadopttheintelligencethatthecoalmachineallhasestablishmentinthemicro

23、processfoundationtoturnsupervisionmonitprotectionsystemcancarryouttohoverwitheachothertypepersonmachinedialoguewirelesscontrolfromadistancethewkconditionmonitappearanceshowthedatacollecttosavedeliverhealth(breakdown)diag

24、nosiswithearlywarningautocontrolautomaticallykeyupetc.variousfunctionsadoptthecoalmachinemaintenancequantityleastbyassurancetheutilizationisthetallestcancarryouttopressasupptwithliquidwkthenoodlestranspttheinfmationofmac

25、hinetohoverwitheachotherwithalliedmoveacontroletc.function.SuchasAnnevirtuousSencompanyELseriesthemodelupequipsImpac:ThetintegratesprotectionsupervisionsystemtheEichhofoftheEichhofcompanyadatagatherstogethertechniquesyst

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