OPTIMIZATION AND TESTING OF OPERATING PARAMETERS FOR THE AUTOMATIC SEEDLING PICKING DEVICE OF TOMATO POT SEEDLING TRANSPLANTER

番茄钵苗移栽机自动取苗装置作业参数优化与试验

DOI : https://doi.org/10.35633/inmateh-75-52

Authors

Fukang ZHOU

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Mengqi ZHANG

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Weichen YAN

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Shijun SONG

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Yi NIU

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Tao FAN

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Bolong WANG

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

Fangyuan LU

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

(*) Guohai ZHANG

Shandong University of Technology, Collage of Agricultural Engineering and Food Science, ZiBo, China 2)Shandong University of Technology, Institute of Modern Agricultural Equipment, ZiBo, China

(*) Corresponding authors:

guohaizhang@sdut.edu.cn |

Guohai ZHANG

Abstract

This study focused on an in-depth analysis of the cam motion process of the seedling clamp within the automatic seedling-picking device for tomato pot seedlings. Key influencing factors, including spring stiffness coefficient, seedling needle holding angle, and seedling-picking frequency, were selected for investigation. Evaluation indicators included substrate loss rate, pot seedling drop rate, and seedling-picking success rate. A three-factor, three-level, second-order rotational orthogonal combination test was conducted. Using Design-Expert V13.0.5 software for data analysis, the theoretical optimal parameter combination was identified: a spring stiffness coefficient of 376.8 N/m, a seedling needle holding angle of 15.6°, and a seedling-picking frequency of 89 plants per minute. Under this parameter combination, the substrate loss rate was reduced to 3.94%, the pot seedling drop rate to 2.01%, and the seedling-picking success rate reached 94.05%. A verification test conducted on the seedling-picking device test bench showed that the experimental results closely aligned with the optimized theoretical values. These findings provide a valuable reference for the structural optimization and performance improvement of seedling-picking devices in fully automatic tomato transplanters and contribute significantly to the advancement of automation in tomato transplanting operations.

Abstract in English

本研究聚焦于番茄钵苗自动取苗装置中的夹苗器凸轮运动过程展开深入分析。在研究过程中，选定弹簧刚度系数、苗针夹持角度以及取苗频率作为关键影响因素，并将基质损失率、钵苗脱落率和取苗成功率确定为评价指标，进而开展三因素三水平二次旋转正交组合试验。借助 Design-Expert.V13.0.5 软件对试验数据进行分析处理，最终获取理论上的最优参数组合，即弹簧刚度系数为 367.8N/m，苗针夹持角度为 15.6°，取苗频率为 89 株 /min。在该参数组合条件下，基质损失率低至 3.94%，钵苗脱落率仅为 2.01%，而取苗成功率高达 94.05%。随后，在自动取苗试验台上进行验证试验，试验结果与优化所得理论结果基本相符。本研究所得的相关成果，能够为番茄全自动移栽机取苗装置的结构优化改进以及作业参数的精准控制提供有益的参考借鉴，对于推动番茄移栽作业的自动化发展具有重要意义。

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