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TheTechnicalSituationDevelopmentTrendofElectricalHaulageShearersAbstract:Inthispaper,thetechnicaldevelopmenthistytechnicalsituationofelectricalhaulageshearersfthinseamofChinaarereviewed,themaintechnicalparameters

2、,generalstructure,serializationdevelopmenttrendofsuchshearesareintroducedKeywds:thinseam;shearer;electricalhaulage;multi—motdriving;transversearrangementGermanEickhoffcompanyAmericanJOYcompanythe70sin20centuriesdevelopsa

3、directcurrenttoleadtoadoptcoalmachineoneafteranother.Henceftheachmainlyadoptedcoalmachinearesearchamanufacturingacompanytoallleadtoadoptcoalmachinetocarryontotheelectricityinthewldagreatdealofofstudyadevelopment.80Theage

4、expectedtoappearalternatecurrenttoleadtoadoptcoalmachinebehind.90Agethebigpowerelectricitywhichdevelopstogatherelectronicsmicroelectronicsinfmationmanagementcalculatintelligencetechniqueintheintegralwholeleadstoadoptcoal

5、machineliketheLSseriesofAmericanJOYcompanyBritishLongAirdoxtheElectraSLseriesofthecompanytheEDWSLseriesofGermanEickhofcompanythreewellsinJapanthreepondcreationtheMCLEDRofseriesetc.theelectricityleadtoadoptcoalmachine.The

6、electricityleadstoadoptcoalmachinegooddependablesexwithitsfunctionparameterGaoautomationdegreeGaooperationconveniencesupervisionprotectionexaminationthefunctionperfecteconomicperfmanceGaoDeng3sadvantagebequicklyexpedanus

7、age.1Thefeignelectricityleadslongtoadoptthecoalmachinedevelopmentgeneralsituation1.1GermanEickhofcompanyAfter1976developpedsuccessfuldirectcurrenttoleadtoadoptcoalmachineitwasbasictostoppedaliquidtopresstoleadadevelopmen

8、tresearchofadoptthecoalmachinecontinuouslydeveloppedvariousfmelectricitiestoleadtoadoptcoalmachine.90TheSLseriesthattheagedevelopishizontaltoarrangethealternatecurrentleadtoadoptcoalmachinecuttomowelectricalengineeringto

9、arrangeinshakingarm.AmongthemtheStypeelectricityleadstoadoptcoalmachinetopackmachinepowertoreachtoone580kWsbiggestleaddint998LSOkNs.SL300typeelectricityleadstoadoptcoalmachinetoalwayspackmachinepowerone018kWstheadoptiond

10、oublechangeoncethePinmachinedragalongonesystembiggestleadspeedtoreachto54.5msraisystemthesystemhavetohoverwitheachotheratypeapersonthemachinedialogueequipmentshealthilyfecaststheonlinecontroldatadeliveretc.function.1.2:B

11、ritishLongAirdoxcompanyAfter1984developpedsuccessthefirstsetcuttomowelectricalengineeringtoarrangeatmanydecationswithhizontalelectricalengineeringsofshakethearmsgetElectra550typedirectcurrentledtoadoptcoalmachineatitsfou

12、ndationtopenlargementpowerthendevelopintoanElectra1000typedirectcurrenttoleadtoadoptcoalmachine.90AgeonthemodelfoundationexchangeschangePinadjustsoontechnicalthincoalseamtoclimbscaleboardtoadoptcoalmachinebranchinShangha

13、iagainsuccessivelydevelopsucceedcuttomowthealternatecurrentthattheelectricalengineeringlengthwayssetsouttoleadtoadoptcoalmachinecuttomowelectricalengineeringhizontalsetoutofbeapplicabletointhickwiththealternatecurrentoft

14、hinnercoalseamleadtoadoptcoalmachinesucceedappliedattheJincityHuaisouthXu2Zhoubigequalmineraldutybureau.3Techniqueacteristicsdeveloptrend3.1packmachinepowertoenlarge.Thefunctionparameterraise(1)Thesinglesetpiecemowselect

15、ricalengineeringpowerallinthe400kWsabove.Themostadoptsthecoalmachinesinglesetpiecetomowelectricalengineeringpowertoalreadyarrive6OOkWthe7LS5sadoptsthecoalmachinesinglesetpiecetomowelectricalengineeringpowertobeupto750kWs

16、.(2)Leadpowerallaboveinthe80kWsbiggestalready220kWs.(3)Alwayspackmachinepowermethanone000kWsreachtoone94OkWssuchasthe7LS5stheEL3000alwayspacksmachinepowerastallestas2000kWs.(4)Leadspeedleaddinttosignificantlyraise.Leadth

17、espeedl525msminleadthedint500kNsabove.Biggestleadspeed54.5msrain(SL300)biggestleaddint998kNs.(5)Cuttomowpoweraggrizementthesupptrompaystoprotectofrealizationtheenlargementrollercutsdeeply.Thelis0yearagoscutdeeplymostlyis

18、a630700Inll1swidespreadnowadopt10001200Zistocutdeeplyseparatelyattain1500Infnsestocutdeeply.(6)Theexaltationadoptsthecoalmachinecredibilitywithcanutilization.Theabroadadoptscoalmachineadollarapartsadesignlifespan:Thewhee

19、lgear12500hsthebearingsis2000030000hsestheelectricalengineeringinsulatesthelifespan44000hstherolleradoptscoal640000ts.Adoptcoalmachinetogreatlyfixaperiodf2yearsthecoalmeasure3005000000ts.Ourcountryrequeststhatadoptingcoa

20、lmachinecoalmeasuresa1502000000tsbutnotgreatlyfixsthemarginisverybig.3.2mediumhighpressurepowersuppliesAlongwithadoptcoalmachinetopackthemachinepowersignificantexaltationthewknoodlescontinuouslylengthensthewholewknoodles

21、capacitywksoverthe5000kWsthenoodleslengthattain300ms.Indertoreducepowerlineroadtoexhaustqualityelectricalengineeringfunctionoftheexaltationpowersupplyhighpressurepowersupplyinthewidespreadadoption.Themainpowersupplygrade

22、hasa2300330041605000Vetc..3.3supervisionsprotectionsystemintelligenceturnThemodernelectricityleadstoadopttheintelligencethatthecoalmachineallhasestablishmentinthemicroprocessfoundationtoturnsupervisionmonitprotectionsyst

23、emcancarryouttohoverwitheachothertypepersonmachinedialoguewirelesscontrolfromadistancethewkconditionmonitappearanceshowthedatacollecttosavedeliverhealth(breakdown)diagnosiswithearlywarningautocontrolautomaticallykeyupetc

24、.variousfunctionsadoptthecoalmachinemaintenancequantityleastbyassurancetheutilizationisthetallestcancarryouttopressasupptwithliquidwkthenoodlestranspttheinfmationofmachinetohoverwitheachotherwithalliedmoveacontroletc.fun

25、ction.SuchasAnnevirtuousSencompanyELseriesthemodelupequipsImpac:ThetintegratesprotectionsupervisionsystemtheEichhofoftheEichhofcompanyadatagatherstogethertechniquesystemtheJOYcompany6LStypetheelectricityleadtheJNAwkinfma

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