| 凸轮摇杆式摆动型玉米株间除草装置设计与试验 |
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| 引用本文： | 周福君,王文明,李小利,唐遵峰.凸轮摇杆式摆动型玉米株间除草装置设计与试验[J].农业机械学报,2018,49(1):77-85. |
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| 作者姓名： | 周福君 王文明 李小利 唐遵峰 |
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| 作者单位： | 东北农业大学,东北农业大学,东北农业大学,中国农业机械化科学研究院 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0701905）和黑龙江省应用技术研究与开发计划重大项目（GA16B301） |
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| 摘 要： | 为满足我国北方玉米苗间机械除草作业需求,设计了一种凸轮摇杆式摆动型玉米株间除草装置,阐述了除草装置的总体结构与工作原理,对其关键部件凸轮摇杆机构和除草刀进行参数化设计,通过对除草装置避苗过程的运动和受力分析,得到影响其作业效果的主要因素及各因素的取值范围。以前进速度、弹簧刚度和除草刀转速为试验因素,以除草率、伤苗率为试验指标,在室内土槽中进行L9(34)正交试验,以考察试验因素对除草装置工作性能的影响。结果表明,各因素对指标影响的主次顺序为弹簧刚度、前进速度、除草刀转速;最优水平组合为弹簧刚度60 N/mm、前进速度0.6 m/s、除草刀转速130 r/min。以最优水平组合进行验证试验,结果为除草率89.8%,伤苗率2.1%,证明其具有较优的作业性能。
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| 关 键 词： | 玉米 株间除草 摆动型 凸轮摇杆机构 优化试验 |
| 收稿时间： | 2017/9/6 0:00:00 |
Design and Experiment of Cam Rocker Swing Intra-row Weeding Device for Maize |
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| ZHOU Fujun,WANG Wenming,LI Xiaoli and TANG Zunfeng.Design and Experiment of Cam Rocker Swing Intra-row Weeding Device for Maize[J].Transactions of the Chinese Society of Agricultural Machinery,2018,49(1):77-85. |
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| Authors: | ZHOU Fujun WANG Wenming LI Xiaoli and TANG Zunfeng |
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| Institution: | Northeast Agricultural University,Northeast Agricultural University,Northeast Agricultural University and Chinese Academy of Agricultural Mechanization Sciences |
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| Abstract: | As people pay more and more attention to food safety issues, chemical weeding is increasingly limited. Compared with chemical weeding and artificial weeding, mechanical weeding has the advantage of less pollution and high efficiency, which conforms to the trend of sustainable agricultural development. However, the traditional cultivation can only remove interstage weeds and cannot remove weeds between plants. In order to meet the requirements of mechanical intra-row weeding for maize in China, a cam rocker swing intra-row weeding device was designed. The overall structure and working principle of the weeding device were illustrated and analyzed. The key components of weeding device were designed, such as the cam rocker mechanism and the weeding knife. The factors that affected the effect of weeding were got based on the kinematic and force analysis of weeding device. For the performance of weeding device, the forward speed, spring stiffness coefficient and weeding knife rotating speed were taken as experimental factors, and weeding rate and injury rate were taken as test indexes. The orthogonal test L9 (34) was conducted in the indoor soil bin for getting test factors affect the performance of weeding device work. Test results showed that the order of the various affecting factors were the spring stiffness coefficient, forward speed and weeding knife rotating speed;the best combination was as follows: the spring stiffness coefficient was 60 N/mm, forward speed was 0.6m/s, weeding knife rotating speed was 130r/min. To the optimal level combination of verification experiment: weeding rate was 89.8%, and injury rate was 2.1%. |
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| Keywords: | corn intra-row weeding swing type cam rocker mechanism optimization test |
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