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《馬鈴薯播種機(jī)的性能評估外文翻譯、外文文獻(xiàn)翻譯、機(jī)械類中英文翻譯》由會員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在行業(yè)資料-天天文庫。
1、馬鈴薯播種機(jī)的性能評估外文翻譯、外文文獻(xiàn)翻譯、機(jī)械類中英文翻譯AssessmentoftheBehaviourofPotatoesinaCup-beltPlanterHBuitenwerfWBHoogmoedPLerinkJMullerFarmTechnologyGroupWageningenUniversityPOBox176700AAWageningenTheNetherlandse-mailofcorrespondingauthorwillemhoogmoedwurnlKroneGmbHHeinrich-Kr
2、oneStrasse1048480SpelleGermanyIB-LerinkLaanvanMoerkerken853271AJMijnsheerenlandTheNetherlandsInstituteofAgriculturalEngineeringUniversityofHohenheimD-70593StuttgartGermanyReceived27May2005acceptedinrevisedform20June2006publishedonline2August2006Thefunctioningo
3、fmostpotatoplantersisbasedontransportandplacementoftheseedpotatoesbyacup-beltThecapacityofthisprocessisratherlowwhenplantingaccuracyhastostayatacceptablelevelsThemainlimitationsaresetbythespeedofthecup-beltandthenumberandpositioningofthecupsItwashypothesisedth
4、attheinaccuracyinplantingdistancethatisthedeviationfromuniformplantingdistancesmainlyiscreatedbytheconstructionofthecup-beltplanterTodeterminetheoriginofthedeviationsinuniformityofplacementofthepotatoesatheoreticalmodelwasbuiltThemodelcalculatesthetimeinterval
5、betweeneachsuccessivepotatotouchingthegroundReferringtotheresultsofthemodeltwohypotheseswereposedonewithrespecttotheeffectofbeltspeedandonewithrespecttotheinuenceofpotatoshapeAplanterunitwasinstalledinalaboratorytotestthesetwohypothesesAhigh-speedcamerawasused
6、tomeasurethetimeintervalbetweeneachsuccessivepotatojustbeforetheyreachthesoilsurfaceandtovisualisethebehaviourofthepotatoTheresultsshowedthatathehigherthespeedofthecup-beltthemoreuniformisthedepositionofthepotatoesandbamoreregularpotatoshapedidnotresultinahigh
7、erplantingaccuracyMajorimprovementscanbeachievedbyreducingtheopeningtimeatthebottomoftheductandbyimprovingthedesignofthecupsanditspositionrelativetotheductThiswillallowmoreroomforchangesinthecup-beltspeedswhilekeepingahighplantingaccuracy1IntroductionThecup-be
8、ltplanterFig1isthemostcommonlyusedmachinetoplantpotatoesTheseedpotatoesaretransferredfromahoppertotheconveyorbeltwithcupssizedtoholdonetuberThisbeltmovesupwardstoliftthepotatoesout
