TextContentsbeltconveyor 皮帶輸送機(jī)troughshape 槽形roller 托輥,滾筒idler 托輥pulley 滑輪take-up 張緊裝置chute 溜槽

feeder 供料器tripper 卸料器beltwidth 帶寬beltspeed 帶速troughangle 槽角dipangle 傾角tiltangleslantanglelarge-blockmaterial 大塊物料

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Beltconveyorsarewidelyusedinmining采礦;采礦業(yè);,metallurgical[?met??l??d??kl]adj.冶金的；冶金學(xué)的;andcoalindustrytotransfersandyorlump(n塊)material,orpackagedmaterial.Accordingtodifferenttransferrequirements,thetransfersystemcanbeonlyonebeltconveyorormulti-conveyors,orcombinedwithothertransferequipment.Thebeltconveyorscanbeinhorizonorinslope（n斜坡）tomeettheneedsofdifferenttransferlines.Theyhavetheadvantagesoflargetransferquantity,simplestructure,easymaintenanceandstandardparts.Thebeltconveyorsareusuallyusedintemperaturebetween-20℃and40℃andthetemperatureofthematerialsshouldbebelow50℃.

Abeltconveyor(Figure4-1)consistsessentially基本上

ofanendlessmovingbelttosupportthematerialtobeconveyed.Forcarryingbulk大塊的materials,thebeltisgenerallygivenatrough[tr?f]水槽shapebyintermediaterollersoridlersforgreatercarryingcapacityandeconomy.Thebeltisdrivenbyapulleyandissupportedonruns,goingandcoming,generallybyrollers,butsometimes,andespeciallyforlightworkandshortdistances,byarunway.Thematerialisloadedonthebeltinsomeconvenientway,andlateritisremovedfromitattheendofthelineoratsomepointalongtherunbyanappropriatedevice.bulkmaterials散裝物料指大塊的particlematerial散裝物料指顆粒狀

Coal,ash灰塵,gravel[?ɡr?vl]礫石,cement[s??ment]水泥andstoneareafewoftheessentialbulkmaterialwhichcanbecarriedbybeltconveyor,butanyotherlooseorgranular顆粒狀materialinbulkform,thatdoesnotadheretoocloselytothesurfaceofthebelt,maybealsohandledsuccessfully.2Theelementsofthebeltconveyor:(1)Abeltinordertocarrythematerialandtransmitthepull(2)Meanstosupportthebelt,oftenrollersorpulleys(3)Meansinordertodrivethebelt,usuallyapulleyorapairofpulleysTheaccessoriesofthebeltconveyor:(1)Keepingbelttension,suchastake-ups(2)Loadingthebelt,forinstance,achuteorfeeder

(3)Dischargingthematerial,forexample,achuteortripper(4)Cleaningdevices,suchasbrushesandcoversBeltconveyorsare,undercommoncircumstance,thelowestincostofpowerandupkeep保養(yǎng);維修.Frictionlossesareless,sincethematerialdoesnotcomeintocontactwiththemovingsurfacesofpulleysandshafts.Thebeltwithitsrollersweighslessthanothertypesofconveyorsdoingsimilarjob,andhencethesupportingstructuresarerelativelylighter.Figure4-1Beltconveyorupkeep=maintenance

動(dòng)詞maintainBeltconveyorsenjoywideapplicationinvariousfieldsformovingdiverseunitloadandbulkmaterials.Abeltconveyorhasthefollowingcharacteristics:longtransportingdistance,largeconveyingcapacity,simpleconstruction,andsimpleoperationandsoon.Thepermissibleparticlesizeofabeltconveyornotonlydependsonbeltwidth,beltspeed,troughangleanddipangle,butalsodependsonthefrequencyoflarge-blockmaterialappearance.Table4-1showsthemaximumparticlesizeofvariousbandwidths.Table4-2showsthetechnicaldataofbeltconveyors.

Table4-2Thebeltconveyor’stechnicaldataWidth(mm)Particlesize(mm)50065080010001200140016001800200022002400100%averageparticlesize10013015020025028032035035035035010%maximumparticlesize150200250300350350400400400400400

Table4-1ThemaximumparticlesizeofvariousbandwidthsModelHUS40-8HUS50-8HUS40-10HUS50-12HUS50-15HUS60-15Conveyinglength(m)8810121515Conveyingheight(m)1.5to41.5to42to72to82to82to8Conveyingcapacity(t/h)404045505060Beltwidth(mm)400500400500500600Ⅰ.AnswerthefollowingquestionsinEnglish.1.Whereisabeltconveyorused?

2.Whataretheelementsofabeltconveyor?

3.Whatdoesthepermissibleparticlesizeofabeltconveyordependon?

Ⅱ.TranslatethefollowingEnglishsentencesintoChinese.1.Beltconveyorsarewidelyusedinmining,metallurgicalandcoalindustrytotransfersandyorlumpmaterial,orpackagedmaterial.Accordingtodifferenttransferrequirements,thetransfersystemcanbeonlyonebeltconveyorormulti-conveyors,orcombinedwithothertransferequipment.

2.Thebeltconveyerscanbeinhorizonorinslopetomeettheneedsofdifferenttransferlines.Theyhavetheadvantagesoflargetransferquantity,simplestructure,easymaintenanceandstandardparts.Thebeltconveyorsareusuallyusedintemperaturebetween-20℃and40℃andthetemperatureofthematerialsshouldbebelow50℃.

3.Abeltconveyorconsistsessentiallyofanendlessmovingbelttosupportthematerialtobeconveyed.Forcarryingbulkmaterials,thebeltisgenerallygivenatroughshapebyintermediaterollersoridlersforgreatercarryingcapacityandeconomy.Thebeltisdrivenbyapulleyandissupportedonruns,goingandcoming,gen