搜索
1新型玉米脱粒机的设计摘要：随着社会的进步，生活中的每一个角落都有机器的参与。农业是我国的基础经济、是国家发展的根本，机械化的普及，不仅使农业加强了农业化生产，同时也减轻了农民的劳动强度。如今我国北方大部分地区基本上从种到收到入仓，都实现了机械化作业，更值得庆幸的是每种机械的开发和利用都有相当可观的市场，科技的创新更好的开阔了市场。这里是一种新型玉米脱粒机的设计，玉米经过一段时间的风干，通过玉米脱粒机的板齿模拟人搓玉米的形式使玉米和玉米芯分开，然后对玉米粒进行清选。该机主要有入料口、栅格式凹板、脱粒仓、主轴、机架、料斗、排芯口、皮带轮、风机及传动部件等组成。以电动机为动力源，动力由电动机输出轴输出，再通过传动带传递到板齿主轴上，板齿配合栅格式凹板将玉米脱粒，玉米粒从栅格式凹板分离经过风机清选并排出机体外，而玉米芯从入料的另一端排出机体之外，完成脱粒。关键词：玉米脱粒机；板齿；传动系统；带轮ThedesignofnewcornShellerAbstract:Withtheprogressofsociety,therearealotofmachineineverycorneroflife.Agricultureistheeconomicfoundationofourcountryisthefundamentaldevelopmentofthecountry,thepopularityofmechanization,notonlytostrengthenagriculturalproductionagriculture,butalsoreducethelaborintensityoffarmers.Today,inmostpartsofnorthernChinafromspeciestoreceivebasicallywarehousing,mechanizedoperations,butitisfortunatethatthedevelopmentanduseofeachmachinehasaconsiderablemarket,innovationoftechnologyopenthemarketofcornSheller.HereisanewdesignofcornSheller,afteraperiodofdry,rubintheformofmaize,cornthresherboardthroughasimulatedhumantoothcornandcorncobsseparately,andthencleartheelectionofcornkernels.Themachineismainlycomposedofthefeedinlet,gridformatintaglio,threshingpositions,spindle,rack,hoppers,guidepinport,exhaustportcores,pulleys,fansandtransmissioncomponents.Electricmotorasapowersource,thepoweroutputfromthemotoroutputshaft,andthenpassedthroughthebeltontothespindleplateteeth,toothplatewithrecessedpanelgridformatthreshingcorn,cornkernelsseparatedaftercleaningthefananddischargedfromthegridformatintagliooutsidethebody,butfromtheotherendofthecorncobmaterialdischargedintotheoutsideofthebodytocompletethreshing.Keywords:cornSheller;plateteeth;transmission;pulley2目录1绪论.....................................................................................................................................41.1引言...........................................................................................................................41.2国内外玉米脱粒行业的现状..................................................................................41.2.1国内研究现状分析.......................................................................................41.2.2国外研究现状分析.......................................................................................41.3本课题研究内容......................................................................................................52新型玉米脱粒机的设计.....................................................................................................72.1脱粒方式的选择.......................................................................................................72.2功能分析..................................................................................................................72.3清选机构设计..........................................................................................................73电动机的选择......................................................................................................................83.1电动机的转速..........................................................................................................83.2脱粒机所需功率......................................................................................................84带及带轮的设计...............................................................................................................104.1传动带的设计........................................................................................................104.1.1确定计算功率.............................................................................................104.1.2选择V带的型号........................................................................................104.1.3确定带轮的基准直径..................................................................................104.1.4确定传动中心距和带长..............................................................................114.1.5验算主动轮上的包角.................................................................................114.1.6确定V带的根数:........................................................................................114.1.7确定带的初拉力..........................................................................................124.1.8求V带传动作用在轴上的压力.................................................................124.2带轮的设计............................................................................................................124.2.1带轮材料的选择.........................................................................................124.2.2主动带轮的设计..........................................................................................134.2.3从动带轮的设计..........................................................................................135脱粒板齿主轴的设计........................................................................................................145.1求传动轴上的功率2P、转速2N和转矩2T.........................................................155.2初步确定轴的最小直径.........................................................................................155.3根据轴向定位的要求确定轴的各段直径和长度.............................................