水稻联合收获机割台装置的设

青岛农业大学毕业论文(设计)题目:4LZ-2.0型水稻联合收获机割台装置的设计姓名:学院：机电工程学院专业：机械设计制造及其自动化班级：2005.03学号：03050117指导教师：王延耀2009年6月18日目录摘要.......................................................................................................................................ⅠAbstrac........................................................................................................................................Ⅱ1绪论.........................................................................................................................................11.1研究的目的和意义...........................................................................................................11.2水稻收获机的发展现状...................................................................................................12方案比较与论证.........................................................................................................................42.1谷物收获的农业技术要求...............................................................................................42.2割台设计方案...................................................................................................................42.3方案比较与选择...............................................................................................................53拨禾器的设计.............................................................................................................................63.1拨禾器的选择...................................................................................................................63.2拨禾轮的结构设计...........................................................................................................63.3拨禾轮的工作原理...........................................................................................................73.3拨禾轮主要性能参数的确定...........................................................................................93.4拨禾轮的工作过程分析.................................................................................................113.5拨禾轮弹齿的设计.........................................................................................................134割台螺旋推运器的设计...........................................................................................................154.1割台螺旋的设计.............................................................................................................154.2伸缩扒指的设计.............................................................................................................165传动系统的设计.......................................................................................................................195.1传动类型的选择.............................................................................................................195.2链传动的设计.................................................................................................................195.3传动系统总体结构的设计.……………………………………………………………215.4割台悬臂轴的设计.........................................................................................................21总结.......................................................................................................................................25参考文献.......................................................................................................................................26致谢.......................................................................................................................................27I4LZ-2.0型水稻联合收获机收割台的设计摘要联合收获机是将收割机和脱粒机用中间输送装置连接成为一体的机构，现在已经得到广泛的应用。其中割台是其重要的组成部分，收割台的功用是切割作物，并将作物运向脱粒装置，它由拨禾轮、切割器、分禾器和输送器等组成。本文设计了一种全喂入式水稻联合收获机收割台，拨禾轮将作物拨向切割器，切割器将作物割下后，由拨禾轮拨倒在割台上。割台螺旋推运器将割下的作物推集到割台中部，并由螺旋推运器上的伸缩扒指将作物转向送入倾斜输送器，然后由倾斜输送器的输送链耙把作物喂入滚筒进行脱粒。本联合收割机的割台具有结构简单、成本低廉、使用方便的特点，缩小了联合收获机的体积并减轻机重，对多种作物均有较好的适应性。关键词：联合收获机；水稻；全喂入式；割台IIDesignof4LZ-2.0CombineharvesterHeaderAbstractUnitestheharvesterisconnectsintotheharvesterandthethresherwiththemiddlefeedwayabody'sorganization,nowalreadyobtainedthewidespreadapplication.Andtheheaderisitsimportantconstituent,header'sfunctioncutsthecrops,andtransportsthecropstothethreshingmechanism,itbythereelpaddle,thecutterbar,thenearsidedividerandtheconveyorandsooniscomposed.Thisarticledesignedonekindtofeedintothetypepaddyriceunionharvesterheader,thereelpaddledialsthecropstothecutterbar,afterthecutterbarcutthecrops,bythereelpaddledialspoursontheheader.Theheaderscrewpushesthecropswhichwilltransportwillcuttopushthecollectiontotheheadermiddle,andwillpushbythescrewtransportsonexpansiontodigupreferstochangesthecropssendsintheinclinedconveyor,willthenfeedintobytheinclinedconveyor'stransportationchainrakethecropsthedrumtocarryontheseedextraction.Thiscombine'sheaderhasthestructuretobesimple,thecostisinexpensive,easytooperate'scharacteristic,reducedunitedharvester'svolumeandreducestheengineweight,hadthegoodcompatibilitytomanykindsofcrops.Keyword:Unitestheharvester;Paddyrice;Allfeedsintothetype;Header青岛农业大学机电工程学院本科毕业设计（论文）11绪论1.1研究的目的和意义水稻是我国主要种植的粮食作物之一，2006年全国耕地面积12204.69万hm2，水稻种植面积约2929.46万hm2，占世界水稻种植面积的20%，居世界界第二；总产量约2亿t，占世界稻谷总产量的35%，位居世界第一。全国农业机械总动力为7.26亿kW