目录1引言...................................................................................................................................................................12玉米脱粒机总体结构.......................................................................................................................................12.1入料部分...............................................................................................................................................12.2脱粒部分...............................................................................................................................................12.3筛选部分...............................................................................................................................................12.4机架部分...............................................................................................................................................22.5玉米脱粒机的总体设计........................................................................................................................23玉米脱粒机的设计..........................................................................................................................................23.1电动机的选择......................................................................................................................................23.2钉齿条上的钉齿转速..........................................................................................................................33.3钉齿滚筒的转速..................................................................................................................................33.4电动机的功率......................................................................................................................................33.5电动机的转速......................................................................................................................................34带及带轮的设计...............................................................................................................................................44.1传动带的设计.......................................................................................................................................44.1.1确定计算功率..........................................................................................................................44.1.2选择V带的型号.......................................................................................................................54.1.3确定带轮的基准直径................................................................................................................54.1.4确定传动中心距和带长..........................................................................................................54.1.5验算主动轮上的包角..............................................................................................................64.1.6确定V带的根数.......................................................................................................................64.1.7确定带的初拉力......................................................................................................................74.1.8求V带传动作用在轴上的压力...............................................
