路面养护机器简介 毕业论文外文翻译

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1、英文资料翻译PavementMaintenanceMachineIntroductionTheforerunneroftoday’sgenerationofcoldplanersweredevelopedinthe1970’s.Earlymachineswereeitherbasedonagraderorasubgradetrimmingmachine.Machinedesignhasnowsettleddown.Basicparameterssuchaspowertocuttingwidthandweighttocuttingwidthratioareremai

2、ningrelativelyconstant.Today’smachinesarecapableofmuchhigherproductionandthereliabilityofequipmentishigher.Roadmillingmachinesin1984Presentdesignofmachinesfromallmanufacturersconsistofthreebasicsystems.PowerunitThiswillbeadieselenginewhichwillprovidepowerforbothforwardmovementonthemac

3、hineandtocuttingdrum.Powermaybetransmittedtothecuttingdrumviahydraulicormechanicalsystem.Ingeneraltherewillbebetween1~1.75horsepowerpercmofcuttingwidthofthedtum.CuttingdrumAllmachineswillhaveacuttingdrumandonmachinesof2mdiameterandoverthedrumnormallyhasadiameterofapprox1m.Thisdrumwill

4、belacedwithaseriesoftungstencarbideteethandingeneraltheseareofthepointattackstyle.Thedrumwillberigidlymountedinaframeordirectlymountedtothechassis.Thedepthofcutiscontrolledbyeithermovingthedrumassemblyupordownorthewholechassissisraisedandloweredonitssupportingwheelsortracks.Conveyings

5、ystemMostofthelargermachinescurrentlymadehavetheirownelevationsystemwherebycutmaterialispickedup,placedonaconveyoranddepositedinawaitingtruck.Alltheabovefunctionsarecontrolledfromonecentralarea.Onemanwilldriveandoperatethemachine.Itislikelythathewillhaveonemanworkingwithhimwhowillchec

6、kthecuttingdepthfromthegroundandmakenecessaryalterationstothedepthofcut.MethodofoperationofcoldplaningmachinesTherearevirtuallynospecificationswrittenbyanycountrythatcovercoldplaning.Inmostcountriesamachineiscalledforwhichwillefficientlyremovearoadsurfacetoagivendepthwithagivenaccurac

7、y,normally±3mm.Themethodbywhichthemachinedoesthisisnotusuallyspecifiedwiththeexceptionthatcoldmillingandself-loadingmaybespecified.Oncetheseparamentershavebeensettleditisuptothevariousmanufacturersoftheequipmenttoputforwardwhattheyconsidertobethemosteconomicwayandmostproductivewayofdo

8、ingth