会员注册 | 登录 | 微信快捷登录 QQ登录 微博登录 | 帮助中心 人人文库renrendoc.com美如初恋!
站内搜索 百度文库

热门搜索: 直缝焊接机 矿井提升机 循环球式转向器图纸 机器人手爪发展史 管道机器人dwg 动平衡试验台设计

   首页 人人文库网 > 资源分类 > DOC文档下载

外文翻译--工作面刮板输送机技术现状与发展趋势.doc

  • 资源星级:
  • 资源大小:501.00KB   全文页数:14页
  • 资源格式: DOC        下载权限:注册会员/VIP会员
您还没有登陆,请先登录。登陆后即可下载此文档。
  合作网站登录: 微信快捷登录 支付宝快捷登录   QQ登录   微博登录
友情提示
2:本站资源不支持迅雷下载,请使用浏览器直接下载(不支持QQ浏览器)
3:本站资源下载后的文档和图纸-无水印,预览文档经过压缩,下载后原文更清晰   

外文翻译--工作面刮板输送机技术现状与发展趋势.doc

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.

注意事项

本文(外文翻译--工作面刮板输送机技术现状与发展趋势.doc)为本站会员(英文资料库)主动上传,人人文库网仅提供信息存储空间,仅对用户上传内容的表现方式做保护处理,对上载内容本身不做任何修改或编辑。 若此文所含内容侵犯了您的版权或隐私,请立即通知人人文库网(发送邮件至[email protected]或直接QQ联系客服),我们立即给予删除!

温馨提示:如果因为网速或其他原因下载失败请重新下载,重复下载不扣分。

[email protected] 2015-2017 人人文库网网站版权所有
苏ICP备12009002号-5