农业工程学报2012，Vol.28Issue(12)：31-37,7.DOI:10.3969/j.issn.1002-6819.2012.12.006
玉米免耕播种机滚筒式防堵机构的设计与试验
Design and experiment of drum-type anti-blocking mechanism of no-till planter for maize
摘要
Abstract
A rotary drum-type anti-blocking mechanism was designed to solve the problem of straw blocking when no-till planter for maize was used in wheat residue or weed-covered fields. Based on the theory of boundary layer in fluid mechanics and contrast test, the appropriate shape of the drum was parabola appearance. And the reasonable velocity of rotation of the drum was calculated as simplifying the relative motion of the drum and straw into circulative streaming of cylinder with uniform flow. Field experiments showed that the rotary drum-type anti-blocking mechanism was effective in solving straw blocking and ensuring the passing ability of the no-till planter for maize. In order to avoid seeds being placed out of seedbed, a residue separating device with 30°aperture angle was designed to set between fertilizer openers and seeding openers.关键词
流体力学/滚筒式/边界层/免耕播种机/防堵机构/分禾栅板Key words
fluid mechanics/ rollers/ boundary layers/ no-till planter/ anti-blocking mechanism/ residue separating device分类
农业科技引用本文复制引用
高娜娜,张东兴,杨丽,刘佳,史嵩,崔涛..玉米免耕播种机滚筒式防堵机构的设计与试验[J].农业工程学报,2012,28(12):31-37,7.基金项目
玉米机械化生产工艺与装备系统优化研究与示范项目(200903059) （200903059）
国家现代玉米产业技术体系建设项目(CARS-02) （CARS-02）
农业部土壤-机器-植物系统技术重点实验室 （）
