摘要本设计按照现有的单粒精播播种机加以改进设计，主要用于小田作业，目的是在玉米、大豆等作物精量播种施肥的同时，进行覆土和镇压土壤。单粒精播播种机覆土镇压装置的设计主要包括机架、仿形机构、覆土机构、镇压机构、以及整体的安装。本文主要包括覆土镇压机构的覆土盘、仿形机构、镇压轮和整机装配的设计整机主要保证对种种子进行覆土，再压实土壤，同时加以仿形机构，改善镇压效果。整机的装配保证各机构位置之间合理，结构紧凑，行距可调且机构间不会发生干涉，从而提高播种机的工作性能。关键词：单粒精播；播种机；镇压装置AbstractThedesignisimprovedaccordingtotheexistingsingle-grainprecisionseeder.ItIismainlyusedforfieldoperation.Thepurposeistocoverandsuppressthesoilwhileprecisionsowingandfertilizingcorn,soybeanandothercrops.Thedesignofthepressure-increasingdeviceforcoveringsoilofsingle-grainprecisionseedermainlyincludesframe,copyingmechanism,coveringmechanism,pressingmechanismandoverallinstallation.Thispapermainlyincludesthedesignofcoveringplate,copyingmechanism,pressingwheelandassemblyofthewholemachine.Thewholemachinemainlyguaranteestocoverseeds,compactthesoil,andimitatethemechanismtoimprovethecompressioneffect.Theassemblyofthewholemachineensuresthatthepositionsofeachmechanismarereasonable,thestructureiscompact,therowspacingisadjustableandthereisnointerferencebetweenthemechanisms,thusimprovingtheworkingperformanceoftheseeder.Keywords：singleseedprecisionseeding;seeder;suppressiondeviceII目录1绪论...............................................................................................................................................11.1研究背景和意义.................................................................................................................11.2研究现状.............................................................................................................................11.3研究内容.............................................................................................................................31.4研究方法.............................................................................................................................31.5预期目标.............................................................................................................................41.6本章小结.............................................................................................................................42播种机概述...................................................................................................................................52.1播种方法及分类.................................................................................................................52.2播种机的发展趋势.............................................................................................................62.2.1发展联合作业的直接播种......................................................................................62.2.2播种机的通用性和适应性不断提高......................................................................62.2.3播种机向高速宽幅发展..........................................................................................62.3.4精密播种推广..........................................................................................................72.3.5新原理新技术运用....................................................................................................
