https://doi.org/10.4081/jae.2024.1676

Design and experiment of a self-propelled two-row garlic combine harvester

Vol. 56 No. 1 (2025)
Published: 19 December 2024
Garlic harvester, flexible clamping, seedling-bulb separation, soil cleaning, parameter optimization
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Authors

Xu Zhang
College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.
Hua Li
lihua@njau.edu.cn
College of Engineering, Nanjing Agricultural University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.
Xindan Qi
College of Mechanical and Power Engineering, Nanjing Tech University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.
Samuel Mbugua Nyambura
College of Engineering, Nanjing Agricultural University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.
Yongjian Wang
College of Engineering, Nanjing Agricultural University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.
Jieyi Fu
College of Engineering, Nanjing Agricultural University, Nanjing; Key Laboratory of Intelligent Agricultural Equipment in Jiangsu Province, Nanjing Agricultural University, Nanjing, China.

Given the significant damage rate observed during the transportation of current garlic combine harvesters in China, this study aims to design a new garlic combine harvester capable of achieving minimal harvest losses. The designed machine can simultaneously complete operations for garlic digging, clamping transport, seedling-bulb separation, soil cleaning, and fruit collection across two rows. Through the use of theoretical analysis and calculation of garlic harvesting operations, the key parameters of soil-breaking device, clamping transport device, length-limiting cutting device, and soil cleaning conyeyor were determined. The Box-Behnken test technique was utilized within Design-Expert software, and orthogonal experiments were conducted with the unit's forward speed, digging depth, and soil-breaking angle as test factors, and the stem cutting rate and bulb damage rate as test indices. The test results showed that when the unit's forward speed, digging depth, and soil-breaking angle were 0.49 m/s, 100 mm, and 20°, respectively, the working parameter combination was the best, and the rate of stem cutting and damage were 95.71% and 3.10%, respectively. The findings from the field experiment and optimization aligned closely. This study can provide reference for the development of mechanized garlic harvesting.

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How to Cite

Zhang, X. (2024) “Design and experiment of a self-propelled two-row garlic combine harvester”, Journal of Agricultural Engineering, 56(1). doi: 10.4081/jae.2024.1676.
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