玉米精量播种机同位仿形半低位投种单体设计与试验.pdf

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1、第28卷增刊2182012年10月农业工程学报TraIlsactionsoftheChineseSocietyofA鲥culturalEngineeringV01．28Supp．20ct．2012：Desi2nandexDerimentofcOUocated．copVingand．UeSlgnandeXDerlment0tCO儿0Cated-CODVlngann●1'●■JlJ●●Jp●1Seml-10W-nelgntplantlng—Unlt10rC0rnpreClSlonSeederCuiTaO，ZhangDOngxing，、向n

2、gLi※，GaONanaKotlege嘭Eng诫eer讯g．ChtnnAgriculturnlun却ers订y．Be莳ingChmd)Abstract：Aimingattheproblemofpoorunif0彻ityofrowspac协g，seedspacingalldplantingdepthcausedbytraditionalplarningunitswhichcouldn’tmeettheneedsofcollocated-copyingandlowplantingheightsimultaneously，anewtypeo

3、fplantingunitwasdesigned．Comparedwim仃aditionalplantingunitswithplantingheightof400—440mm，mep【antinghei曲tofthenewuIlitwasonly280mmandatthesametimetheplallting-uIlithadthe血nctionofcollocated·copyillg．Theconfigurationpar砌etersofcmcialcomponents，suchasthediameterofc叩yingwhe

4、el，thelen舀hofcopyingwheelbracket，thelengthandtiltangleofanti．blockofcopyingwheel，andetc，wereanalyzedanddetermined．111eminim岫andmaximumplaIltingdepthwas40al_Id90mm，respectiVely．Someplanting-unithadagreateradjustmentrangeofplantingdepthandcouldmeettlleneedsofprecisionplan

5、tinginmostcases．FieldexperimentalresultsindicatedthatmenewdesigIleduIlitcouldaccor印lishcomprecisionplanting，andthequalifiedindexofseedspacing，reseedingindex，missplalltingindex，coemcientofv撕ationofspacinga11dunifom时ofplaJltingdeptIlwere94．8％，2．9％，2．3％，15．1％and88．3％respec

6、6vely，andallofwhichwereobViouslybettert11arIthecoITespondingindexesofthetraditionalplantingu11itwithhi曲plantingheight．Keywords：a鲥cultlIralmachinery，stmctllres，optimazation，comprecisionplanter，plantingunit，collocated·copyin岛semi—low-heightplantingdoi：10．3969a．issn．1002—6

7、819．2012．z2．004CLCnumber：S223．2+2Documentcode：AArticleID：1002—6819(2012)一Supp．2—00l8—06CuiTao，ZhangD0ngxing，YangLi，etal-Desi印锄dexperimentofcollocated—copyingandsemi一10w-heightplallting-u11itforcomprecisionseeder[J]．1’mnsactionsoftheChineseSocie哆ofAgricult眦alEngineering(

8、rI_ransactionsoftheCSAE)，2012，28(supp．2)：18—23．(inEnglishwithchineseabs仃act)崔涛，张东兴，杨丽，等．玉米精量播种机同位仿形半低位投种单体设计与试