机械专业毕业设计外文翻译Word下载.docx
- 文档编号:22523688
- 上传时间:2023-02-04
- 格式:DOCX
- 页数:16
- 大小:29.38KB
机械专业毕业设计外文翻译Word下载.docx
《机械专业毕业设计外文翻译Word下载.docx》由会员分享,可在线阅读,更多相关《机械专业毕业设计外文翻译Word下载.docx(16页珍藏版)》请在冰豆网上搜索。
ThebasisoftheloaderclassificationistheSocietyofAutomotiveEngineersofAmerica(SAE)ratedcapacityofthebucket.TheclassificationisbasedonthelargestgeneralpurposebucketofferedbythemanufacturerorthebucketsizeadoptedbytheContractor,whicheveristhelesser.Theloaderassemblymaybearemovableattachmentorpermanentlymounted.Oftenthebucketcanbereplacedwithotherdevicesortools—forexample,manycanmountforkstoliftheavypalletsorshippingcontainers,andahydraulicallyopening"
clamshell"
bucketallowsaloadertoactasalightdozerorscraper.Thebucketcanalsobeaugmentedwithdeviceslikeabalegrapplerforhandlinglargebalesof
hay
or
straw.
Large
loaders,suchasthe
Kawasaki95ZV-2,
JohnDeere844K,
Caterpillar950H,
VolvoL120E,
Case921E,or
HitachiZW310
usuallyhaveonlyafrontbucketandarecalled
FrontLoaders,whereassmallloadertractorsareoftenalsoequippedwithasmall
backhoe
andarecalled
backhoeloaders
orloaderbackhoesor
JCBs,afterthecompanythatfirstinventedthem.
ThelargestloaderintheworldisLeTourneauL-2350.CurrentlytheselargeloadersareinproductionintheLongview,Texasfacility.TheL-2350usesadieselelectricpropulsionsystemsimilartothatusedinalocomotive.Eachrubbertiredwheelisdrivenbyitsownindependentelectricmotor.
Komatsu-integrateddesignoffersthebestvalue,reliability,andversatility.Hydraulics,powertrain,frame,andallothermajorcomponentsareengineeredbyKomatsu.Yougeta18machinewhosecomponentsaredesignedtoworktogetherforhigherproduction,greaterreliability,andmoreversatility.Komatsu’shighlyproductive,innovativetechnology,environmentallyfriendlymachinesbuiltforthe21stcentury.
Loadersareusedmainlyforuploadingmaterialsinto
trucks,layingpipe,clearingrubble,anddigging.Aloaderisnotthemostefficientmachinefordiggingasitcannotdigverydeepbelowthelevelofitswheels,likea
backhoecan.Thecapacityofaloader
bucket
canbeanywherefrom0.5to36
m3
dependinguponthesizeofthemachineanditsapplication.Thefrontloader'
sbucketcapacityisgenerallymuchbiggerthanabucketcapacityofa
backhoeloader.
Unlikemost
bulldozers,mostloadersare
wheeled
andnot
tracked,although
trackloaders
arecommon.Theyaresuccessfulwheresharpedgedmaterialsinconstructiondebriswoulddamagerubberwheels,orwherethegroundissoftandmuddy.Wheelsprovidebettermobilityandspeedanddonotdamage
paved
roads
asmuchastracks,butprovidelesstraction.
Inconstructionareasloadersarealsousedtotransportbuildingmaterials-suchasbricks,pipe,metalbars,anddiggingtools-overshortdistances.
Frontloadersarecommonlyusedto
removesnow
especiallyfromsidewalks,parkinglots,andotherareastoosmallforusingsnowplowsandotherheavyequipment.Theyaresometimesusedassnowplowswitha
snowplow
attachmentbutcommonlyhaveabucketorsnowbasket,whichcanalsobeusedtoloadsnowintotherearcompartmentofasnowplowordumptruck.
High-tipbucketsaresuitableforlightmaterialssuchaschip,peatandlightgravelandwhenthebucketisemptiedfromaheight.
Loadersbucket
characteristics
1.Bucket
edge
for
super-hard
wearresistantsteelplate
upto500
Brinellhardnessforlonglife.
2.Bucket
shell
andside
Brinellhardness
of400
toresist
abrasivewear.
Installed
bythe
enhancedtreatment
of
attachment
hingepoints
to
reduceWearandtear.
3.bucket
cutting
blade
resistanceto
abrasive
wear
ofsteel,
of500.
Resistantliner
installed
in
the
onthefloor
by
The
bolt
maybereplaced,
of500.
4.
and
theedgeof
savings
andstaging
toprevent
unnecessarywear
thecuttingedge.
5.
Volvo
buckettooth
system
isequippedwith
a
orweld
type
connector,
theBrinellhardness
515,with
best
interpolationinto
depthand
smaller
thewearandtear.
Skid-steerLoaderFeatures
1.Theround-backbucketdesignisstrongerwithnoangledcorners.Thisconfigurationmakesiteasiertofillanddump—improvingproductivity.
2.TheROPS/FOPSstructureprotectsandshieldstheoperator.
3.Atotaloffourexteriorlightshelptoilluminateanyjobsitedayornight.
4.Asafetysystemlockslift,tiltanddrivesystemswhentheoperatorleavestheseat,raisestheseatbar,orturnsofftheignitionswitch.Thebrakesarewet-typemultiplediscsthatrequirenomaintenance.
5.Heavy-dutytiresarestandard—matchingthedurabilityoftheskid-steer.
6.Theruggedall-weldedunitizedframeisconstructedof.375-inchgaugesteelforyearsofproductivity.Stepbushingsareplacedinallkeypivotareastoincreasestrengthandreducestress.
7.Awiderwheelbaseprovidesforasmoothrideandmorebalanceforstabilitywithheavierloads.A9-inchgroundclearanceallowseasymaneuverabilitythroughmudandotherterrain.
8.Hydrauliclinesareprotectedwithintheloaderarm.
9.Mustangfeaturesaself-levelingverticallift.
10.Theadvancedhydraulicsystemaffordslongerserviceintervalsandcomeswithasightglassforquickandeasyfluidlevelinspections.
11.Adrop-downstepmakesitconvenienttocheckengineandmaintenancePoints.
Thiswheelloaderofferstwoselectableengineoperatingmodes—NormalandPower.Theoperatorcanadjustthemachine’sengineperformancetomatchtheconditionrequirements.Thissystemiscontrolledwithadialontherightsidecontrolpanel.
(1)NormalMode:
providesmaximumfuelefficiencyformostgeneralloadingconditions.
(2)PowerMode:
providesmaximumpoweroutputforharddiggingconditionsorhillclimboperations.
2AutomaticTransmissionwithFourModeSelectSystem
Thisoperatorcontrolledsystemallowstheselectionofmanualshiftingorthreelevelsofautomaticshiftingmodes(low,medium,andhigh).Theoperatorcanmatchthemachine’soperatingrequirementswithoptimumperformanceefficiency.Thissystemiscontrolledwithadialontherightsideofthecontrolpanel.
(1)Manual:
Thetransmissionisfixedtothegearspeedandselectedwiththegearshiftlever.
(2)AutoLow:
Lowmodeprovidessmoothgearshiftingatlowenginespeedssuitableforgeneralexcavatingandloadingwhileofferingreducedfuelconsumption.
(3)AutoMedium:
Mediummodeprovidesgearshiftingatmid-rangeenginespeedsrequiredformoreaggressiveconditions.
(4)AutoHigh:
Highmodeprovidesmaximumrimpullandfastcycletimesbyshiftingthetransmissionathighenginespeeds.Thismodeissuitableforhill-climbandloadandcarryoperations..
Unlikebackhoesorstandardtractorsfittedwithafrontbucket,manylargeloadersdonotuseautomotivesteeringmechanisms.Instead,theysteerbyahydraulicallyactuatedpivotpointsetexactlybetweenthefrontandrear
axles.Thisisreferredtoas"
articulatedsteering"
andallowsthefrontaxletobesolid,allowingittocarrygreaterweight.Articulatedsteeringprovidesbettermaneuverabilityforagivenwheelbase.Sincethefrontwheelsandattachmentrotateonthesameaxis,theoperatorisableto"
steer"
hisloadinanarcafterpositioningthemachine,whichcanbeuseful.Thetradeoffisthatwhenthemachineis"
twisted"
toonesideandaheavyloadisliftedhigh,ithasagreaterriskofturningovertothe"
wide"
side.
Frontloadersgainedpopularityduringthelasttwodecades,especiallyinurbanengineeringprojectsandsmallearthmovingworks.
Heavyequipment
manufacturersofferawiderangeofloadersizesandduties.Theterm"
loader"
isalsousedinthedebrisremovalfieldtodescribetheboomona
grappletruck.
Israeli
CombatEngineeringCorps
usearmoredCaterpillar966wheelloaderforconstructionand
combatengineeringmissionsinhostileterritoriessuchasthe
WestBank.Theyareoftenseenbuildingorremovingroadblocks,buildingbasesand
fortifications
andstartingin2005,demolishingsmallhouses.The
IDF
addedarmorplatingfortheloader,protectingitagainstrocks,stones,
molotovcocktails,andlightgunfire.
RiodeJaneiro'
spoliceelitesquad
BOPE
haverecentlyacquiredonewheelloaderofmilitarypurposestoopenroutesandmakewayforthepoliceinRiodeJaneiro'
sslums,whicharecontrolled,andblocked,bydrugdealers.
Theseloadersareapopularadditiontotractorsfrom50to200
hp.Itscurrent'
drive-in'
formwasoriginallydesignedanddevelopedin1958byacompanycalledQuicke.
Theyweredevelopedtoperformamultitudeoffarmingtasks,andarepopularduetotheirrelat
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 机械 专业 毕业设计 外文 翻译