双粒舵轮气吸式精密穴播器的设计.doc

中文摘要I摘要本文针对玉米的播种要求设计出了性能可靠、结构简单、布局合理的双粒舵轮气吸式穴播器,实现一穴两粒精播玉米的功能。气吸式排种器是利用高速风机产生负压传给真空室,在真空室负压作用下吸附种子,并随排种盘一起转动。当种子转出真空室后,不再承受负压,就靠自重或在刮种器作用下下落,完成一次排种,对种子外形尺寸要求不严,伤种率小,排种质量高。而舵轮式穴播器可实现作物的定距、定穴、定行的精密播种,具有投种准确、可靠,无空穴等特点。因此可集成气吸排种和舵轮成穴播种技术,实现精量、精密播种,最大限度的减少空穴率。本文对舵轮穴播技术与气吸排种原理进行了理论分析,给出了相应的结构参数和气吸参数,并对影响播种质量的各种因素进行了分析,从而设计出了双粒舵轮气吸式精密穴播器的整体结构。此穴播器能一次性完成双粒气吸排种与成穴点播,保证每穴必有种子,最大限度的杜绝了空穴率,提高了播种精度和播种质量,保证高出苗率,满足了农民朋友的要求。关键词:双粒;气吸式;舵轮;精密播种;穴播器英文摘要-II-AbstractInthispaper,requirementsofmaizeplantingdesignandreliableperformance,simplestructure,reasonablelayoutofthetwo-particlebunchplantingwheelair-suctiondevice,-suctionmeteringdeviceistheuseofhigh-speedblowervacuumchambertoproducenegativepressureinthevacuumchamberundernegativepressureadsorptionseeds,,thevacuumisnolongeraffordable,werelyonself-pletionofthefirstseedtoseedsizenotstrict,therateofinjuryofthesmall,high--dropandwheel-typecanbefixedfromthecrop,willbepoint,urate,reliable,non-,precision,precisionplanting,,bunchplantingwheeltechnologyandtheprincipleofsuctionseedtheoreticalanalysis,giventhestructuralparametersofthecorrespondingparametersandairabsorption,andthequalityoftheimpactofplantingavarietyoffactorsareanalyzedinordertodesignadual-grainwheelprecisionair-suctiontheoverallstructureofhill--pletethetwo-particleone-timeseed-suctioncavitationanddemand,toensurethatthereiseachholeseeds,uracyandsowingtheseedquality,andensureahighgerminationrate,:Two-particle;air-suction;wheel-type;precisionplanter;hill-dropplanter目录-III-目录摘要.....................................................................................................................IABSTRACT(英文摘要)...............................................................