3GY-1920型宽幅水田中耕除草机的设计与试验

为了提高机械除草的作业效率、降低地头频繁调头引起的伤苗率,该文研制了3GY-1920型宽幅水田中耕除草机。该机由12 k W水田拖拉机提供动力,工作幅宽为5.7 m,一次作业可覆盖6行插秧机3个行程的作业宽度,并配备了4个双作用液压缸,控制整个机架的展开闭合与除草轮位置的横向调节。该文结合水田土壤特性和现有除草部件的特点,通过对除草轮的运动学与显式动力学仿真分析,设计并优化了螺旋刀齿式样除草轮,该除草轮通过与土壤及杂草的剪切、翻耕作用实现中耕除草作业。田间除草试验结果表明:在机具不同前进速度(0.3、0.6、0.9 m/s)和除草轮入土深度(3、6、9 cm)条件下,该机平均除草率为82%,伤...

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Published in农业工程学报 Vol. 33; no. 8; pp. 47 - 55
Main Author 齐龙 赵柳霖 马旭 崔宏伟 郑文汉 芦玉龙
Format Journal Article
LanguageChinese
Published 华南农业大学工程学院,广州 510642 2017
华南农业大学南方农业机械与装备关键技术教育部重点实验室,广州 510642%华南农业大学工程学院,广州,510642
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Summary:为了提高机械除草的作业效率、降低地头频繁调头引起的伤苗率,该文研制了3GY-1920型宽幅水田中耕除草机。该机由12 k W水田拖拉机提供动力,工作幅宽为5.7 m,一次作业可覆盖6行插秧机3个行程的作业宽度,并配备了4个双作用液压缸,控制整个机架的展开闭合与除草轮位置的横向调节。该文结合水田土壤特性和现有除草部件的特点,通过对除草轮的运动学与显式动力学仿真分析,设计并优化了螺旋刀齿式样除草轮,该除草轮通过与土壤及杂草的剪切、翻耕作用实现中耕除草作业。田间除草试验结果表明:在机具不同前进速度(0.3、0.6、0.9 m/s)和除草轮入土深度(3、6、9 cm)条件下,该机平均除草率为82%,伤苗率为4.8%;根据机具作业速度和幅宽可知该机作业效率为0.6-1.8 hm^2/h;整机工作性能和作业效率满足水稻田机械中耕除草作业的技术要求。机械除草与化学除草产量对比试验结果表明:在试验区域内,机械除草产量高于化学除草,该研究可为中耕除草对水稻田产量的影响提供参考。
Bibliography:11-2047/S
In order to improve the mechanical weeding efficiency and reduce the injury rate of seedling caused by frequent swerve at the end of the field, a wide-swath machine, named 3GY-1920 type wide-swath weeder, was designed for intertillage and weeding in paddy field. This weeding machine driven by the paddy tractor mounted relevant components including the wide-swath adjustable frame, the hydraulic control system, the weeding unit and profiling mechanisms. To match triple working widths of ride style high-speed rice transplanter, this weeder was equipped with 19 weeding rolls. The working width was designed to be 5.4 m according to line spacing of rice seeding, which was normally 0.3 m. As the transplanter could not follow one path line in 3 different processes, the whole frame was divided into 3 parts including the left-side frame, the right-side frame and the bearing frame. A hydraulic system, including oil pump, different types of electromagnetic valves, hand valve, 4 hydraulic cylinders, relief valve,
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2017.08.006