小型玉米脱粒机的设计 毕业设计

摘要

此次设计的小型玉米脱粒机，其工作原理为电动机通过皮带轮传动, 玉米棒通过入料斗进入脱粒滚筒，在高速回转的脱粒滚筒的冲击和玉米棒、滚筒、凹板式栅格的作用下被脱粒下来。采用挤搓式的原理使用板齿进行脱粒，板齿呈螺旋均布便于脱粒滚筒。小风扇的作用是将夹在玉米粒中的轻杂带走。与同类产品相比，结构非常紧凑，性能优良，操作十分轻便，安全可靠，而且不占场地，搬运存放十分方便，成本非常低。破碎率很低，可以提高种子发芽率。能大大的减轻农民劳动强度，有利于抢赶农业季节，促进农民发家致富，推动农业的发展，适宜在广大农村推广应用。

关键词：玉米；脱粒机；板齿

The design of small corn thresher, its working principle for the motor through the pulley drive, corn cob through into the hopper into the cylinder, and the impact of the high-speed rotary cylinder corn cob, roller, concave plate under the action of grid by threshing. The crowded rub board tooth principle used for threshing, tooth a spiral plate uniform easy threshing cylinder. Is the role of small fan clip light impurity in the corn kernels. Compared with similar products, the structure is very compact, high performance, operation is very portable, safe and reliable, and do not take a site, handling storage is very convenient, cost is very low. Breakage rate is very low, can improve the seed germination rate. Can greatly reduce labor intensity of farmers, is conducive to rob farming season, promote the farmers get rich, promote the development of agriculture, suitable for application in the countryside.

Keywords:Corns；Shellers machine；Plank-tooth

目录

摘要.............................................................................................................................................. I 前言 .............................................................................................................................................. I V 1 引言 ........................................................................................................................................ - 1 -

1.1 毕业设计课题的任务和要求.................................................................................... - 1 -

1.2 课题的主要内容........................................................................................................ - 1 -2小型玉米脱粒机的设计......................................................................................................... - 2 -

2.1 脱粒机构....................................................................................... 错误!未定义书签。

2.2 筛选机构.................................................................................................................. - 4 -

2.3 清选机构.................................................................................................................. - 4 -

2.4 机架.......................................................................................................................... - 5 -

3 玉米脱粒机的设计计算........................................................................................ - 5 -

3.1 电动机的选择 ......................................................................................................... - 5 -

3.2 V带传动的计算....................................................................................................... - 7 -

3.3 带轮的设计.............................................................................................................. - 9 -

3.4 轴的结构尺寸设计................................................................................................ - 12 -

3.5 轴承的选用............................................................................................................ - 16 -

3.6 键的选择与计算.................................................................................................... - 18 -

3.7 风机的选用............................................................................................................ - 19 -4玉米脱粒机的使用和维护................................................................................................... - 21 -

4.1玉米脱粒机使用的注意事项 ................................................................................ - 21 -

4.2 玉米脱粒机的维修保养........................................................................................ - 22 -5总结与展望 .......................................................................................................................... - 23 -参考文献.................................................................................................................................. - 24 -致谢..................................................................................................................................... - 25 -附录 ......................................................................................................................................... - 26 -