玉米脱粒机的论文定稿

本资料包含doc文件1个，下载需要5积分

绪论........................................................................1
1.玉米脱粒机总体设计方案...................................................1
1.1设计任务分析.............................................................2
1.1.1总功能确定.............................................................2
1.2功能分析.................................................................2
1.2.1功能分析...............................................................2
2.电动机的选择..............................................................2
2.1电动机的转速.............................................................2
2.2确定电机工作效率.......................................................4
2.3确定电机的型号...........................................................4
3.带轮与传动带的设计........................................................5
3.1带轮材料的选择...........................................................5
3.2带轮的结构设计...........................................................5
3.2.1主动轮的结构设计......................................................5
3.2.2从动带轮的设计........................................................6
3.3传动带的设计............................................................7
4.轴的设计................................................................10
4.1轴材料的选择............................................................10
4.2轴结构的基本要求........................................................10
4.3根据轴向定位的要求确定轴的各段直径和长度................................12
4.4 初步选择输出轴系.......................................................12
4.5确定输出轴上的圆角半径 值...............................................12
4.6按弯扭合成条件校核轴的强度..............................................12
4.6.1作轴的简图............................................................12
4.6.2 求输出轴上的所受作用力的大小.........................................12
4.6.3钉齿条上的合力........................................................12
4.6.4轴上水平面内所受支反力如图............................................13
4.6.5轴在垂直面内所受的支反力..............................................13
4.6.6 作弯矩图.............................................................13
4.6.7作弯矩图.............................................................14
4.6.8作当量弯矩图（弯矩、扭矩合成图）.....................................14
4.7 校核轴的强度..........................................................15
4.8轴承座的设计..........................................................16
5.钉齿滚筒的设计.........................................................16
5.1钉齿条的总体结构设计...................................................16
5.2钉齿条及钉齿的设计......................................................17
5.2.1钉齿的设计............................................................17
5.3 圆盘的设计 ............................................................17
6.玉米脱粒机的安全操作.....................................................18
6.1超速运转，机械爆炸”...................................................18
6.2禁止过疲劳或酒后操作....................................................18
7.玉米脱粒机的维护.......................................................29
7.1玉米脱粒机的技术保养...................................................20
7.2玉米脱粒机的保管........................................................20
结论......................................................................20
致谢......................................................................21
参考文献...................................................................21