本科论文目 录摘 要........................................................................................................................IAbstract.....................................................................................................................II引 言.......................................................................................................................11 水果分选机............................................................................................................21.1 课题研究意义...............................................................................................21.2 国外发展现状...............................................................................................21.3 国内发展现状...............................................................................................42 总体设计................................................................................................................62.1 设计内容.......................................................................................................62.2 设计依据.......................................................................................................72.3 设计要求.......................................................................................................83 总体结构的布置与设计........................................................................................93.1 分级机械整体布局.......................................................................................93.2 主要结构分析与设计...................................................................................94 上料部件设计......................................................................................................124.1 上料机尺寸设计.........................................................................................124.2 上料链条设计................................................................................................
