吊杯式栽植器的优化设计及试验
针对目前吊杯式移栽机在移栽过程中出现的膜上穴口尺寸过大、栽植器容易撕膜、刮膜等问题,从栽植器的结构参数和分析特征系数入手,对于膜上穴口尺寸进行了研究.通过Pro/E建立栽植器的三维模型并进行优化设计与制造,对8 cm×8 cm和6 cm×6 cm口径的2种栽植器进行了田间对比试验,分析了其对膜上穴口尺寸的影响程度.然后通过变换传动比改变运动特征系数来研究运动特征系数对膜上穴口尺寸的影响规律.试验表明通过改进栽植器的结构,膜上横向尺寸较改进前平均降低了约45.3%;膜上纵向尺寸较改进前平均降低了17.9%.当运动特征系数从小变大时,膜上穴口平均值表现为先减小后增大,在运动特征...
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Published in | 农业工程学报 Vol. 31; no. 14; pp. 58 - 64 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
内蒙古农业大学机电工程学院,呼和浩特,010018
2015
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Subjects | |
Online Access | Get full text |
ISSN | 1002-6819 |
DOI | 10.11975/j.issn.1002-6819.2015.14.008 |
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Summary: | 针对目前吊杯式移栽机在移栽过程中出现的膜上穴口尺寸过大、栽植器容易撕膜、刮膜等问题,从栽植器的结构参数和分析特征系数入手,对于膜上穴口尺寸进行了研究.通过Pro/E建立栽植器的三维模型并进行优化设计与制造,对8 cm×8 cm和6 cm×6 cm口径的2种栽植器进行了田间对比试验,分析了其对膜上穴口尺寸的影响程度.然后通过变换传动比改变运动特征系数来研究运动特征系数对膜上穴口尺寸的影响规律.试验表明通过改进栽植器的结构,膜上横向尺寸较改进前平均降低了约45.3%;膜上纵向尺寸较改进前平均降低了17.9%.当运动特征系数从小变大时,膜上穴口平均值表现为先减小后增大,在运动特征系数为 1.238 时膜上穴口尺寸最小,说明运动特征系数存在最优值.改进栽植器机构后的试验结果为:株距的平均值维持在40 cm左右,漏苗率为1.07%,伤苗率为0.71%,直立度合格率为92.6%.当运动特征系数为1.238时,穴口纵向尺寸平均值为71 mm,横向尺寸平均值为18.5 mm,均为最小值.故对于2ZP型移栽机,运动特征系数取1.238为宜.该研究为吊杯式移栽机改进设计和性能优化提供参考. |
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Bibliography: | agricultural machinery;transplants;optimization;transplanting device;movement characteristic coefficient;hole size;structure design 11-2047/S Li Xuying, Wang Yuwei, Lu Guocheng, Zhang Bo, Zhang Haijun (College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 01 O018, China) Dibble-type transplanting device is a core component of dibble-type transplanting machine, and the structural size and the movement rules directly affect the quality of seedling planting. At present, dibble-type transplanting machine in the transplanting process appears that the up-film hole size is too large, and hence the transplanting machine is easy to tear and scrape film, as well as other issues. Starting with the structure parameters of transplanting machine and analyzing the movement characteristic coefficient, the up-film hole size is studied. First of all, the design of the parts of seedling cup, spatial cam, cup mouth and so on is improved, and the three-dimensional model of improved planting |
ISSN: | 1002-6819 |
DOI: | 10.11975/j.issn.1002-6819.2015.14.008 |