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玉米脫粒機設計機械畢業(yè)設計

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玉米脫粒機設計機械畢業(yè)設計
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;

目錄

1 引言………………………………………………………………………………………... 1
2 玉米脫粒機機體方案的設計………………………………………………………………. 4
2.1 玉米脫粒機的種類、功能………………………………………………………………… 4
2.2 脫粒裝置的種類和特點……………………………………………………………… 4
3 喂入口和排出口的設計.………………………………………………………………..… 6
4 脫粒裝置的設計.…………………………………………………...………………………. 7
4.1 滾筒類型的設計……………………………………………………………………..…… 7
4.2 滾筒的直徑、轉(zhuǎn)速和長度的設計……………………………………………………….. 7
4.3 釘齒的形狀和尺寸的設計……………………………………………………………… 8
4.4 釘齒的排列……………………………………………………………………………….. 8
4.5 凹板的主要參數(shù)設計…………………………………………………………………… 10
4.6 滾筒與凹板的工作間隙……………………………………………………………….. 10
4.7 滾筒末端的穗軸排出口……………………………………………………………….. 10
5 清選裝置的設計…………………………………………………………………………. 11
5.1 清選裝置的功用………………………………………………………………………… 11
5.2 風機的選擇…………………………………………………………………………….. 11
6 傳動部分的設計………………………………………………………………………….. 13
6.1 帶輪傳動………………………………………………………………………………. 13
6.2 帶輪的材料……………………………………………………………………………... 13
6.3 滾筒軸的設計計算……………………………………………………………………… 14
7 電動機的選擇…………………………………………………………………………. 17
8 軸承的選擇與校核……………………………………………………………………….. 19
8.1 軸承選型………………………………………………………………………………. 19
8.2 軸承的校核……………………………………………………………………………. 19
9 玉米脫粒機的使用和維護………………………………………………………………... 22
9.1 玉米脫粒機使用的注意事項…………………………………………………………… 22
9.2 玉米脫粒機的維修保養(yǎng)……………………………………………………………….. 22結(jié)論 …………………………………………………………………………………………. 23
致謝 …………………………………………………………………………………………. 24
參考文獻 …………………………………………………………………………………… 25

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