




已閱讀5頁(yè),還剩2頁(yè)未讀, 繼續(xù)免費(fèi)閱讀
版權(quán)說(shuō)明:本文檔由用戶提供并上傳,收益歸屬內(nèi)容提供方,若內(nèi)容存在侵權(quán),請(qǐng)進(jìn)行舉報(bào)或認(rèn)領(lǐng)
文檔簡(jiǎn)介
致謝7附錄(英文資料翻譯)BalerAbalerisapieceoffarmmachineryusedtocompressacutandrakedcrop(suchashay,straw,orsilage)intocompactbalesthatareeasytohandle,transportandstoreSeveraldifferenttypesofbalersarecommonlyused,eachproducingadifferenttypeofbalesrectangularorcylindrical,ofvarioussizes,boundwithtwine,netting,orwire.Industrialbalersarealsousedinmaterialrecyclingfacilities,primarilyforbalingmetal,plastic,orpaperfortransport.RoundbalerThemostfrequentlyusedtypeofbalerinindustrializedcountriesisthelargeroundbaler.Itproducescylinder-shapedroundorrolledbales.Grassisrolledupinsidethebalerusingrubberizedbelts,fixedrollers,oracombinationofthetwo.Whenthebalereachesapredeterminedsize,eithernettingortwineiswrappedaroundittoholditsshape.Thebackofthebalerswingsopen,andthebaleisdischarged.Thebalesarecompleteatthisstage,buttheymayalsobewrappedinplasticsheetingbyabalewrapper,eithertokeephaydrywhenstoredoutsideorconvertdampgrassintosilage.Variable-chamberbalerstypicallyproducebalesfrom48to72inches(120to180cm)indiameterandupto60inches(150cm)inwidth.Thebalescanweighanywherefrom1,100to2,200pounds(500to1,000kg),dependinguponsize,material,andmoisturecontent.OriginallyconceivedbyUmmoLuebbenscirca1910,thefirstroundbalerdidnotseeproductionuntil1947,whenAllis-ChalmersintroducedtheRoto-Baler.Marketedforthewater-sheddingandlightweightpropertiesofitshaybales,AChadsoldnearly70,000unitsbytheendofproductionin1960.Thenextmajorinnovationcamein1972,whentheVermeerCompanybegansellingitsmodel605-thefirstmodernroundbaler.Previously,roundhaybaleshadbeenlittlemorethanlumpsofgrasstiedtogether,buttheVermeerdesignusedbeltstocompacthayintoacylindricalshapeasisseentoday.LargerectangularbalerAnothertypeofbalerincommonuseproduceslargerectangularbales,eachboundwithahalfdozenorsostringsoftwinewhicharethenknotted.Suchbalesarehighlycompactedandgenerallyweighsomewhatmorethanroundbales.IntheprairiesofCanadatheyarecalledprairieraptors.SmallrectangularbalerAtypeofbalerwhichislesscommontodayinsomeplacesbutwhichisstillprevalentinmanycountriessuchasNewZealandandAustraliatotheexclusionoflargebalesproducessmallrectangular(oftencalledsquare)bales.Eachbaleisabout15inx18inx40in(40x45x100cm).Thebalesarewrappedwithtwo,three,orsometimesfourstrandsofknottedtwine.Thebalesarelightenoughforonepersontohandle,about45to60inches(1.1to1.5m).Toformthebale,thematerialtobebaled,(whichisoftenhayorstraw)inthewindrowisliftedbytinesinthebalerspickup.Thismaterialisthendraggedoraugeredintoachamberthatrunsthelengthofonesideofthebaler.Acombinationplungerandknifemovesbackandforthin附錄thefrontendofthischamber.Theknife,positionedjustaheadoftheplunger,cutsoffthematerialatthespotwhereitentersthechamberfromthepickup.Theplungerramsthematerialrearwards,compressingitintothebales.Ameasuringdevicemeasurestheamountofmaterialthatisbeingcompressedand,attheappropriatelengthittriggersthemechanism(theknotter)thatwrapsthetwinearoundthebaleandtiesitoff.Asthenextbaleisformedthetiedoneisdrivenoutoftherearofthebalingchamberontothegroundorontoaspecialwagonhookedtotherearofthebaler.Thisprocesscontinuesaslongasthereismaterialtobebaled,andtwinetotieitwith.Thisformofbaleisnotmuchusedinlarge-scalecommercialagriculture,becauseofthecostsinvolvedinhandlingmanysmallbales.However,itenjoyssomepopularityinsmall-scale,low-mechanizationagricultureandhorse-keeping.Besidesusingsimplermachineryandbeingeasytohandle,thesesmallbalescanalsobeusedforinsulationandbuildingmaterialsinstraw-baleconstruction.Squarebaleswillalsogenerallyweatherbetterthanroundbalesbecauseamoremuchdensestackcanbeputup.Convenienceisalsoamajorfactorinfarmersdecidingtocontinueputtingupsquarebales,astheymakefeedingandbeddinginconfinedareas(stables,barns,etc.)mucheasier.Manyoftheseolderbalersarestilltobefoundonfarmstoday,particularlyindryareas,wherebalescanbeleftoutsideforlongperiods.Theautomatic-balerforsmallsquarebalestookonmostofitspresentformin1940.ItwasfirstmanufacturedbytheNewHollandAganditusedasmallpetrolenginetoprovideoperatingpower.Itisbasedona1937inventionforatwine-tiebalerwithautomaticpickup.WirebalersBalespriorto1937weremanuallywire-tiedwithtwobalingwires.Evenearlier,thebalerwasastationaryimplement,drivenbypowertake-off(PTO)andbelt,withthehaybeingbroughttothebalerandfedinbyhand.Thebiggestchangetothistypeofbalersince1940isbeingpoweredbythetractorthroughitsPTO,insteadofbyabuilt-ininternalcombustionengine.Inpresentdayproduction,smallsquarebalerscanbeorderedwithtwineknottersorwiretieknotters.PickupandhandlingmethodsInthe1940smostfarmerswouldbalehayinthefieldwithasmalltractorwith20orlesshorsepower,andthetiedbaleswouldbedroppedontothegroundasthebalermovedthroughthefield.Anotherteamofworkerswithhorsesandaflatbedwagonwithwouldcomebyanduseasharpmetalhooktograbthebaleandthrowitupontothewagonwhileanassistantstacksthebale,fortransporttothebarn.Alatertime-savinginnovationwastotowtheflatbedwagondirectlybehindthebaler,andthebalewouldbepusheduparamptoawaitingattendantonthewagon.Theattendanthooksthebaleofftherampandstacksitonthewagon,whilewaitingforthenextbaletobeproduced.Eventually,astractorhorsepowerincreased,thethrower-balerbecamepossible,whicheliminatedtheneedforsomeonetostandonthewagonandpickupthefinishedbales.Thefirstthrowermechanismusedtwofast-movingfrictionbeltstograbfinishedbalesandthrowthematanangleupintheairontothebalewagon.Thebalewagonwasmodifiedfromaflatbedintoa3-sidedskeletonframeopenatthefront,toactasacatchersnetforthethrownbales.Astractorhorsepowerfurtherincreased,thenextinnovationofthethrower-balerwasthehydraulictossingbaler.Thisemploysaflatpanbehindthebaleknotter.Asbalesadvanceoutthebackofthebaler,theyarepushedontothepanoneatatime.Whenthebalehasmovedfullyontothepan,thepansuddenlypopsup,pushedbyalargehydrauliccylinder,andtossesthebaleupintothewagonlikeacatapult.Thepan-throwermethodputsmuchlessstressonthebalescomparedtothebelt-thrower.Thefrictionbeltsofthebelt-throwerstressthetwineandknotsastheygripthebale,andwouldoccasionallycausebalestobreakapartinthethrowerorwhenthebaleslandedinthewagon.NewHollandhasinventedamachinenamedtheStackcruiser,orastacker.Smallsquarebalesaredroppedbythebalerwiththestringsfacingoutward,thestackerwilldriveuptothebalesanditwillpickitupandsetitonathree-bale-widetable(thestringsarenowfacingupwards).Oncethreebalesareonthetable,thetableliftsupandback,causingthethreebalestofacestringstothesideagain;thishappens3moretimesuntilthereare16balesonthemaintable.Thistablewillliftlikethesmallerone,andthebaleswillbeupagainstaverticaltable.Themachinewillhold160bales(tentiers),usuallytherewillbecross-tiersnearthecentertokeepthestackfromswayingorcollapsingifanyweightisappliedtothetopofthestack.Thefullloadwillbetransportedtoabarn,thewholerearofthestackerwilltiltupwardsuntilitisvertical.Therewillbetwopushersthatwillextendthroughthemachineandholdthebottomofthestackfrombeingpulledoutfromthestackerwhileitisdrivenoutofthebarn.InBritain(ifsmallsquarebalesarestilltobeused),theyareusuallycollectedastheyfalloutofthebalerinabalesledgedraggedbehindthebaler.Thishasfourchannels,controlledbyautomaticmechanicalbalances,catchesandsprings,whichsorteachbaleintoitsplaceinasquareeight.Whenthesledgeisfull,acatchistrippedautomatically,andadoorattherearopenstoleavetheeightlyingneatlytogetherontheground.Thesemaybepickedupindividuallyandloadedbyhand,ortheymaybepickedupalleighttogetherbyabalegrabonatractor,aspecialfrontloaderconsistingofmanyhydraulically-powereddownward-pointingcurvedspikes.Thesquareeightwillthenbestacked,eitheronatrailerfortransport,orinaroughlycubicfieldstackeightortenlayershigh.Thiscubemaythenbetransportedbyalargemachineattachedtothethree-pointhitchbehindatractor,whichclampsthesidesofthecubeandliftsitbodily.附錄打包機(jī)打包機(jī)是一種農(nóng)業(yè)機(jī)械,它用于壓縮已切割和傾斜的作物(如草、稻草或青貯飼料)成易于處理、運(yùn)輸和儲(chǔ)存的小包。常用的打包機(jī)有幾個(gè)不同類(lèi)型,分別生產(chǎn)不同類(lèi)型的包-矩形的、圓柱形的,大小各不相同,用麻繩、網(wǎng)或金屬絲纏繞起來(lái)。工業(yè)打包機(jī)還可以用在材料回收設(shè)備上,主要用于包裝需要運(yùn)輸?shù)慕饘?、塑料或紙。圓形打包機(jī)在工業(yè)化國(guó)家最常用的打包機(jī)是這種又大又圓的打包機(jī)。它生產(chǎn)圓柱狀的“圓”或“筒狀”的包。草在打包機(jī)內(nèi)被捲起,使用橡膠帶、固定滾筒,或兩者的組合。當(dāng)包達(dá)到規(guī)定尺寸時(shí),用網(wǎng)或麻繩裹住它,以保持其固有的形狀。打包機(jī)的后面打開(kāi),包被排出。包在這個(gè)階段完成,但也可以用塑料薄膜包裹,當(dāng)在室外儲(chǔ)存時(shí)能保持干草的干燥或者將潮濕的草變成青貯飼料??勺儌}(cāng)打包機(jī)通常生產(chǎn)直徑為48至72英寸(120180厘米)、寬達(dá)60英寸(150厘米)的包。無(wú)論在任何地區(qū),這些包可以重達(dá)1100至2200磅(500-1000公斤),包的重量取決于大小,材料,和水分含量。最初,圓形打包機(jī)的構(gòu)思由UmmoLuebbens于大約1910年提出,第一臺(tái)圓形打包機(jī)才生產(chǎn)出來(lái),一直到1947年Allis-Chalmers引進(jìn)了旋轉(zhuǎn)打包
溫馨提示
- 1. 本站所有資源如無(wú)特殊說(shuō)明,都需要本地電腦安裝OFFICE2007和PDF閱讀器。圖紙軟件為CAD,CAXA,PROE,UG,SolidWorks等.壓縮文件請(qǐng)下載最新的WinRAR軟件解壓。
- 2. 本站的文檔不包含任何第三方提供的附件圖紙等,如果需要附件,請(qǐng)聯(lián)系上傳者。文件的所有權(quán)益歸上傳用戶所有。
- 3. 本站RAR壓縮包中若帶圖紙,網(wǎng)頁(yè)內(nèi)容里面會(huì)有圖紙預(yù)覽,若沒(méi)有圖紙預(yù)覽就沒(méi)有圖紙。
- 4. 未經(jīng)權(quán)益所有人同意不得將文件中的內(nèi)容挪作商業(yè)或盈利用途。
- 5. 人人文庫(kù)網(wǎng)僅提供信息存儲(chǔ)空間,僅對(duì)用戶上傳內(nèi)容的表現(xiàn)方式做保護(hù)處理,對(duì)用戶上傳分享的文檔內(nèi)容本身不做任何修改或編輯,并不能對(duì)任何下載內(nèi)容負(fù)責(zé)。
- 6. 下載文件中如有侵權(quán)或不適當(dāng)內(nèi)容,請(qǐng)與我們聯(lián)系,我們立即糾正。
- 7. 本站不保證下載資源的準(zhǔn)確性、安全性和完整性, 同時(shí)也不承擔(dān)用戶因使用這些下載資源對(duì)自己和他人造成任何形式的傷害或損失。
最新文檔
- 政治思想工作題庫(kù)及答案
- 應(yīng)用安全管理試題及答案
- 2023保密考試題庫(kù)及答案
- 情感計(jì)算在CRM中的應(yīng)用-洞察及研究
- 視覺(jué)適應(yīng)性進(jìn)化路徑-洞察及研究
- 2025至2030年中國(guó)筆架行業(yè)市場(chǎng)運(yùn)行狀況及投資潛力研究報(bào)告
- 高端旅游住宿市場(chǎng)的差異化競(jìng)爭(zhēng)分析-洞察闡釋
- 以教育家精神引領(lǐng)教師隊(duì)伍建設(shè)的策略及實(shí)施路徑
- 城市廢物管理政策評(píng)估-洞察闡釋
- 乳品消費(fèi)創(chuàng)新的策略及實(shí)施路徑
- 儀器儀表制造職業(yè)技能競(jìng)賽理論題庫(kù)
- 稅收分析試題及答案
- 2025年西式面點(diǎn)師(中級(jí))面包烘焙實(shí)操考試試卷
- 回遷樓房買(mǎi)賣(mài)合同協(xié)議書(shū)
- 新課程理念下語(yǔ)文課堂教學(xué)體系重建
- 工程完工后的回訪與保修服務(wù)承諾
- 從技術(shù)革新到應(yīng)用拓展:高效便捷三維人體重建的多維探索
- 2025年湖南省中考數(shù)學(xué)模擬試卷(二)
- 國(guó)家開(kāi)放大學(xué)2025年《創(chuàng)業(yè)基礎(chǔ)》形考任務(wù)3答案
- 廣東省大灣區(qū)2025屆普通高中畢業(yè)年級(jí)聯(lián)合模擬考試(二)化學(xué)(含答案)
- 電大《組織行為學(xué)》期末題庫(kù)及答案
評(píng)論
0/150
提交評(píng)論