凸轮摆杆式栽植机构运动分析及性能试验

该文针对钵苗栽植机构栽植直立度低的问题,设计一套凸轮摆杆式栽植机构。建立了栽植机构的运动学模型,得到机构栽植器栽植轨迹、栽植速度和栽植加速度方程。基于MATLAB/GUI开发了应用于栽植机构运动分析的图形交互界面,分析了栽植机构曲柄CD长度与初始相位角、摆杆OA长度与初始相位角以及平行杆AG长度对栽植轨迹的影响,并通过正交试验方法对移栽结构参数进行优化。根据优化所得参数加工出试验样机,以钵苗直立度为主要检测指标对该试验样机进行田间试验。试验表明：该栽植机构能够在0.556 m/s的工作速度和栽植频率60.7株/min条件下较好地满足钵苗农艺栽植要求,钵苗栽植直立度优良率为95%且其变异系数为2...

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Bibliographic Details
Published in农业工程学报 Vol. 32; no. 6; pp. 34 - 41
Main Author 何亚凯 李树君 杨学军 颜华 王薇
Format Journal Article
LanguageChinese
Published 中国农业机械化科学研究院,北京100083 2016
现代农装科技股份公司,北京100083%中国农业机械化科学研究院,北京,100083%现代农装科技股份公司,北京,100083
Subjects
优化
农业机械
凸轮摆杆
栽植机构
移栽机
试验
运动学
运动学分析
agricultural machinery
栽植机构
test
试验
运动学
kinematics
cam-swing link
移栽机
运动学分析
optimization
优化
transplanter
transplanting mechanism
kinematic analysis
农业机械
凸轮摆杆
Online AccessGet full text
ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2016.06.005

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Summary:该文针对钵苗栽植机构栽植直立度低的问题,设计一套凸轮摆杆式栽植机构。建立了栽植机构的运动学模型,得到机构栽植器栽植轨迹、栽植速度和栽植加速度方程。基于MATLAB/GUI开发了应用于栽植机构运动分析的图形交互界面,分析了栽植机构曲柄CD长度与初始相位角、摆杆OA长度与初始相位角以及平行杆AG长度对栽植轨迹的影响,并通过正交试验方法对移栽结构参数进行优化。根据优化所得参数加工出试验样机,以钵苗直立度为主要检测指标对该试验样机进行田间试验。试验表明：该栽植机构能够在0.556 m/s的工作速度和栽植频率60.7株/min条件下较好地满足钵苗农艺栽植要求,钵苗栽植直立度优良率为95%且其变异系数为2.03%,倒伏率为1.67%,栽植株距误差率为0.22%,无缺苗和漏栽现象。由此表明所设计栽植机构在高栽植效率的条件下,仍具有良好的栽植性能,所涉及的研究方法和试验结果可为后期样机的设计提供参考依据。
Bibliography:11-2047/S
The application of mechanical transplanting on crops can effectively increase the product of crops and reduce the labor intense as modern cultivation techniques. But the popularization and application are limited by the problem of lower upright degree to some certain extent. A new type cam-swing link type transplanting machinewas designed to solve the problem of lower upright degree in current pot seedling planting machine. In addition, the receiving seedling stability of planting apparatus can be guaranteed well, owing to double parallel four-bar mechanism of this planting machine. In this paper, the kinematic model of the transplanting machine was established, including the equations of planting trajectory,planting velocity and planting acceleration for the planting device. For the purpose of high efficiency, interactive GUI design tool had been explored based on the MATLAB/GUI according to these mathematic equations. The influences on the transplanting trajectory of main parameters were analyzed b
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2016.06.005