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外文翻译--液压支架.doc

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外文翻译--液压支架.doc

翻译部分英文原文Introduction.Chinascoalreserves,thedistributionofawiderangeofcomplexconditionsofoccurrenceanddistributionofthe1.3m3.5m.dipbelow25degrees,inthemiddleofstabilityandstabilitywhichthefollowingconditionsundertheroofoftheseam,withitsoutputaccountingforabout86oftotaloutput.Chinasoverallminingfaceinthedistributionofrelieftothemajorityofwhichtiltstabilityandthestabilitywhichtheroofabovethethickseam,andtheotherconditionsundertheseam,theexistinghydraulicsupportpooradaptability,theuseoftheresultisnotsatisfactory.Nationwide,thecomplexgeologicalconditionsandthelackoffundsandotherreasons,despite10yearsofefforts,Fullylevelisstillonly21,whilefullydevelopedcountriesabroadgenerallevelhasreached7080.FromChinainrecentyearssupportingthereform,thehugeinvestmentoffullymechanizedminingdevelopmentisveryslow.andthehydraulicpropfacetherewasamajordevelopment,asmallnumberofmineshasbasicallyrealizedthehydraulicpropof.Chinafullymechanizedhydraulicsupporttopromotetheuse,therearestillmanyproblemstobesolved.1.VarietySerieshydraulicsupportsthereasonablestructureinourcountry,theconditionsaregoodface,financialstrengthoftheminingareabasicallytheuseofthefullymechanized.Althoughsomeotherminingareasfullymechanized,butwiththeintensityofdevelopment,faceincreasinglyworseconditions,thestrikelengthhasbecomeincreasinglyshort.difficultminingcoalseamimbalanceisgettingworse.Withamineormineswithausedone,twotypesofstentsitdifficulttoadapttoallthecoalfaceandconditionsthepurchaseofFwidehugeinvestmentandtechnologyisnotnecessarilyeconomicallyreasonable,themajorityofsmallandmediumsizedminefundingdifficulties,butsomeoftheexistinghydraulicsupportsaredifficulttoadapttotheminegeologyandproductiontechnology.TheaboveanalysisindicatesthatwhileChinascoalminessupportingthelowlevelofmechanization,hydraulicsupportsandotherfoodmanufacturers.TheproblemisnotsuitableformostgeologicalconditionsandtheproductiontechnologysupportVarietySeries.TakingapanoramicviewofChinascoalminesandstentmanufacturersoftheactualsituation,webelievethatthedevelopmentofChinascoalminingsupportseriesFullygowiththesimplefullymechanized,highgrademiningandgeneralminingcomprehensiveancillaryroad,Atpresent,thefocusshouldbeonthefullymechanizedsummarysupportingproductresearchanddevelopment.Sinceshiftinghydraulicstent,tofurtherimprovethequalityofproducts,improvefunction,improvingstructure,reducecostsandenhancetheadaptabilitystent.Wemustcontinuetoimproveandinnovateunderspecialconditionsforexploitationofthespecialstent.Forhydraulicprop,althoughdevelopmenthasbeenlaid,butthereisstillalotofproblems,mainlythreevalveclearance,however,pillarsofmaintenancecapacity,highfailurerate,support,demolition,removalofallmanual,laborintensivehydraulicpropwithhingedmetalroofbeamssupportinglowefficiency.Therefore,hydraulicpropshouldalsoimproveproductquality,reducecosts,andsupportingthedevelopmentofanexclusivetopbeam,achievepillarsandroofbeamscombineanddoshiftfromrunning.Focusonresearchanddevelopmentofwideadaptation,morepowerful,cheap,simpleandfullysupporting,Sincerangedfromlargehydraulicshiftstentsandstentslipbetweenthetopbeamofthelightframe,bothfromtheshift,wipingthetopandpressureshiftfunction,butalsowithmonomerstentsmallsize,lightweight,flexibleandadaptabletothechangingcharacteristics,greaterscopetoadapttotheoccurrenceofcoalproductionandtechnologicalconditions.FullydevelopmentSimpleLighthydraulicsupporttotheattractionofforeignmentionlegsstent,domesticslidingroofbeamstentsuccessonthebasisofexperience,toovercometheirshortcomings,dostentlightweight,resistance,lowcost,overallfunctionsandadaptability.AccordingtoChinasactualsituationinthecoalmine,webelievethatthedevelopmentofChinaLightEasyFullyhydraulicshiftfromthestent,canbedividedintothefollowingthreestepsFirst,tocontinuetoimprovetheslidingroofbeamtypestructure,andimproveitsfunction.furtherexpandthescopeofuseSecond,thetransformationofpooruseoftheCribandFestivalstent,asstructure,FmorereasonableandmoreadaptabletotheshiftinglightfromthestentThird,thedevelopmentofmoreinnovativefunctionalwhole,structureandworkingmethodsmorereasonablenewlightsincetheshiftstent.Asaresult,thereisaverycompleteportablehydraulicsupportseries.Highgradegeneralminingwillbesimpletofullymechanizedminingdevelopment,generalminingtothehighgradegeneralminingtransition,notanincreaseininvestmentinthecircumstances,sothatthemajorityofthemechanizedcoalminingtoimprovethegenerallevelanotch.2.Hydraulicsupportsthetechnicalstatusquo.Inrecentyears,Chinascomprehensivemechanizationofcoalmininglevelhasincreased,WithintegratedmechanizedminingtechnologyandthedevelopmentofnewhighpowerShearer,theconveyorsemergencerequireacorrespondingstent,butthestentcontrolsystemwithoutcorrespondingimprovementisnotenoughtomeettherequirements.Sofar,Myhomemadehydraulicsupportcontrolremainedinhandwithaonewayplaneocontrolorthecontrollevel.Suchcontrol,althoughthecontrolsystemissimple,easytomanufacture.andthelowercostofcoalgeologicalconditionschangeadaptationstrongadvantages,butithadseriousshortcomings①poorworkingconditionsofworkers,securityispoor②Movingveryslowly,theimpactontheefficiencyofShearertoplay③ventilationwaspoor,thehighfailurerateofstent④Supportingtheeffectivenessoftheoperationandtheextenttoplaytheexperienceandskillslevelofthenumberofcloselyrelated.Hydraulicsupporttoachieveautomaticcontrol,canbeeffectivelyovercometheabovedrawbacks,achievingtherightstentelectrohydrauliccontrol,andavarietyofcontroloptionsareavailable,Officersintherelativelysafeplacesfocusontheentirefaceofthestentremotecontrolorprocesscontrol.Nowforeignordinaryfullymechanizedcoalfacehydraulicsupporthasachievedthecomputerinfraredelectrohydrauliccontrol,group.Rowstotheadvancementracks,liquidratedforupto40MPapressure.Lmin300flow450Lminforliquiddiameter100mm120mm.Movingfasterthanthe10mingroup.Domesticandhydraulicsupportsorlowvoltagesolutionforsmalldiameter,artificialmanualoperation.Statisticsactualscene,aforwardsupportgroupwilltakeabout1min.Supportforthelargestfluidpressurenotexceed32MPafor25mmdiameterby30mm,Flowin150200LminLmin.Twocolumnscoverhydraulicsupporttheworkofresistance780t,Fwidth1.5m,usinginfraredPM4electrohydrauliccontrolsystem,Shearermicrocomputerfromtheremotecontrol,supportcolumnsmorethan400mmindiameter,speedshiftinggroup10min.3.FullydevelopmentSimpleLightstentprospects.Mechanizedmininginthecentralpartofthestentissupporting.Chinasmorethan300existinghighgradegeneralminingoperationsandtheuseofhydraulicpropbracing,slow,laborintensive,productionfalters,andthehighfailurerateofstent,themaintenancecostishigh.IfasmallinvestmentaboutFully1416,highgradegeneralminingfacedevelopmentassimplefullymechanizedcoalface.Supportingintensityofthestentrealizeshift,andtosomeextentwithpressuremoving,Faceroofmanagementwillbesignificantlyimprovedyield,theeffectivenesswillbesignificantlyenhanced.Summaryoffullymechanizedminingmechanizationlevelalthoughoutpacedlargefullymechanized,butitsadaptabilitylarger,broaderscope,investmentinhighgradegeneralminingincreasedmarginally,mechanizationhasincreaseddramatically,significantlyreducedlaborintensity.Forsomelargehydraulicsupportitdifficulttoadapttotheminingdistrictandotherfinancialdifficultiesofsmallandmediumsizedmine,thelocalcoalmine,FullyEasydevelopmentisundoubtedlyenhanceminingmechanizationleveltoenhanceeconomicefficiencyandguaranteeproductionsafetyimprovetheworkingconditionsofworkersinawellestablishedtechnique.4.Conclusion.Afternearly30yearsofdevelopmentandhardwork,Chinashydraulicsupportinthedesign,manufacturelevelhasbeenimproving.especiallyinthegentlyinclinedthickseamofhydraulicsupporthasaccumulatedconsiderableexperience,thebasicframetypehasbecomemature,perfect,inthevarietyandqualitywiththeadvancedinternationallevelgapisgettingsmallerandsmaller.Butthecontrolcomponentsandcontrolsystemsandproductsinadvancedcountriesthereisalargegap.Henceforth,itshallcontinuetobedirectedagainstChinasnationalconditionsandspecificconditionsseam,developingsomenewtype,thenewvarieties,Itshouldalsoimprovestentcontrolsystemsandimprovethereliabilitystenteffort.References1ZhuShishun.TalkaboutthehydraulicsupportVarietySeriesqualifiedstructureJ.Minemachinery,1990335.2RongPENGXiWen.hydraulicsupportcontrolandtheprospectsofthedevelopmentJ.Minemachinery,19901113.3withYangMinWangYueFei.ComprehensiveuptodomesticdevelopmentandsupportingequipmentThoughtsJ.MineMachinery,1999823.

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