试析驱动圆盘破茬式玉米免耕播种机试验研究

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1、分类号密级y9397G1单位代码学号弋啜塞-f文杂学位论文10019s030825驱动圆盘破茬式玉米免耕播种机试验研究StudyonNo-tnlMaizePlanterwithPowerDrivenDiscforCuttingStubble研指导教师：奎阈堡剑生选合作指导教师：申请学位门类级别：三堂亟±专业名称：盛些垫璺巡三墨研究方向：垫撼蓥壶盟塞鱼盐差垫型撞所在学院：王堂瞳2006年5月摘要针对北方一年一熟地区根茬地上免耕播种时，开沟器入土困难，根茬不易破除，开沟器易将根茬挑起，造成地表高低不平，影响播种质量等问题，试验研究了驱动圆盘式玉米根茬破茬装置及相应的玉米免耕播种机

2、。通过土槽试验详细比较了大、小波纹圆盘与缺口圆盘刀的破茬性能，通过单因素分析比较，得出大波纹圆盘刀在相同试验条件下的功率消耗比小波纹圆盘刀增加10％左右，缺口圆盘刀功率消耗比大、小两波纹圆盘刀降低60％左右。并建立了小波纹圆盘破茬装置的功耗模型，为圆盘刀的选取提供了理论依据。研制出驱动【圊盘破茬式两行玉米免耕播种机，其开沟破茬装置通过一楔形圆盘调整使圆盘刀的安装角度与前进方向成7。夹角，结构简单，圆盘的拆卸安装更换和行距调整简便。在有根茬未耕地上进行免耕播种的试验结果表明，圆盘开沟器入土能力强，破茬效果好，能够一次完成破茬、开沟、播种、施肥、镇压等作业；扰土量少，整机消耗动力

3、小；播种、开沟质量等满足农艺要求。关键词：免耕播种机，土槽试验，驱动圆盘，破茬装置AbstractAimingattheproblemsthattheopeneroftheno-tillplanteroftencan’tbreakupcoinrootstalkshardpenetrateintothesoilandtendstohangtherootswhichhadbecomeanimportantfactorsaffectingseedingqualityofone—crop—a-yearregioninNorthofChina．Inordertosolvethesepr

4、oblemsanewdrivendisccuttingmechanismandanewno-tillmaizeplanterwercdeveloped．Throughsoilbinexperimentsadetailedcomparisonabouttheperformanceoftwokindsofrippledisksandnotcheddiskhavebeendone．Throughsingle-factoranalysisandcomparison，powerconsumptionofbigripplediskis10％morethanthatofsmallrippl

5、ediskandpowerconsumptionofnotcheddiskis60％lessthanthatoftworippledisksinthesanletestconditions．Throughfurthersoilbinexperimentsestablishedmathematicmodelofpowerconsumeofsmallrippledisk．Itcanprovideatheoreticalbasisfortheseleclionofdisk．Designedandimprovedtworawsno-tillmaizeplanterwithpowerd

6、rivendiscforcuttingstubble．Throughawedge-shapeddiskadjustment，adiscwasinstalledwithallangleof7degreestothedirectionofthefront．Thestructureofthedeviceissimpleandeasytothediskreplacement．Rowspacingadjustmentisalsoeasy．Inno-tillfieldswithcornrootstalksthedisccuttingmechanismhasagoodperformance

7、ofpenetratingandtheeffectofbreakingmotstalkisgood．TheⅡwmachineCallfinishcuttingrootstalk．trenching，sowing，fertilization，repressioninonecourse．Theplanterdisturbedsoilissmallandhaslowerpowerconsume．Seedingqualityshowedthatthenewmachinecouldmeetagdculturald