Performance Analysis and Operation Parameter Optimization of Shaker-Type Harvesting for Camellia Fruits

Qiaoming Gao, Jianfeng Han, Shan Zeng, Yu Wang (), Wei Wei, Dongxue Wang, Hang Ye, Jing Lu and Haoxiang Zeng
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Qiaoming Gao: School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545616, China
Jianfeng Han: School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545616, China
Shan Zeng: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Yu Wang: College of Engineering, South China Agricultural University, Guangzhou 510642, China
Wei Wei: Forestry Science Research Institute, Guigang 537121, China
Dongxue Wang: Forestry Science Research Institute, Guigang 537121, China
Hang Ye: Forestry Science Research Institute, Guigang 537121, China
Jing Lu: School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545616, China
Haoxiang Zeng: School of Mechanical and Automotive Engineering, Guangxi University of Science and Technology, Liuzhou 545616, China

Agriculture, 2024, vol. 14, issue 11, 1-15

Abstract: This study aims to address the challenges of achieving a high harvesting rate and low flower bud damage rate during the harvesting of camellia fruits. To this end, a dynamic model of the camellia osmantha tree and a self-developed shaker-type harvesting machine were used as research subjects. The first 24 natural frequencies and mode shapes of the camellia tree were solved using the finite element method, and the effects of vibration frequency, excitation position, and vibration duration on the harvesting rate and flower bud damage rate were quantitatively analyzed through an orthogonal experiment. The numerical analysis results indicate that the camellia tree exhibits good response characteristics at vibration frequencies of 10–15.5 Hz and 38.5 Hz. The three-factors orthogonal experiment figured out that the optimal operational parameters for shaker-type harvesting were determined to be a vibration duration of 30 s, a motor output frequency of 12.5 Hz, and a gripping position height of 50 to 60 cm above the ground. Meanwhile, under these operational parameters, the harvesting efficiency reached 96.97%, while the flower bud damage rate was only 6%.

Keywords: harvesting machinery; camellia fruits; shaker-type; modal analysis; orthogonal test (search for similar items in EconPapers)
JEL-codes: Q1 Q10 Q11 Q12 Q13 Q14 Q15 Q16 Q17 Q18 (search for similar items in EconPapers)
Date: 2024
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