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玉米脱粒机设计机械毕业设计

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玉米脱粒机设计机械毕业设计
The Design of the Corn Thresher

Abstract: This design of the corn sheller is principle of work is that electrical machinery is driver pulley.The mealies are put into the drum through the hopper, in the impact of the which is rotating in high speed the impact and the mealie, the drum, under the notch-board mutual function is extracted seeds. Majority of seeds are taken off through notch-board hole. Then the ear axis axial will move along the drum flow out the outside of the screen surface of the aircraft. The partial of seeds smuggling in the ear axis are discharged through the mess mild of the clamps light which are mixed in the seed. Compared to the similar product, the strudures in compact the performance is fine, the operation is facile, safe reliable, also does not occupy the location, transporting depositing is convenient.The percentage of damage is very low, may enhance the seed-germination percentage.Can reduces the farmer labor intensity greatly, is advantageous in snatches catches up with the farmer season season, promotes the farmer to become rich, impels agricultural the development.Being suitable in general countryside promotion application.

Keywords: corn; threshier; organ;



目 录

1 引言... 1
2 玉米脱粒机机体方案的设计. 4
2.1 玉米脱粒机的种类、功能 4
2.2 脱粒装置的种类和特点 4
3 喂入口和排出口的设计... 6
4 脱粒装置的设计..... 7
4.1 滚筒类型的设计.. 7
4.2 滚筒的直径、转速和长度的设计.. 7
4.3 钉齿的形状和尺寸的设计 8
4.4 钉齿的排列.. 8
4.5 凹板的主要参数设计 10
4.6 滚筒与凹板的工作间隙.. 10
4.7 滚筒末端的穗轴排出口.. 10
5 清选装置的设计. 11
5.1 清选装置的功用 11
5.2 风机的选择.. 11
6 传动部分的设计.. 13
6.1 带轮传动. 13
6.2 带轮的材料... 13
6.3 滚筒轴的设计计算 14
7 电动机的选择. 17
8 轴承的选择与校核.. 19
8.1 轴承选型. 19
8.2 轴承的校核. 19
9 玉米脱粒机的使用和维护... 22
9.1 玉米脱粒机使用的注意事项 22
9.2 玉米脱粒机的维修保养.. 22结论 . 23
致谢 . 24
参考文献 25

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