马铃薯播种机的性能评估外文翻译、外文文献翻译、机械类中英文翻译

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1、马铃薯播种机的性能评估外文翻译、外文文献翻译、机械类中英文翻译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