Modeling and Simulation of Reel Motion in a Foxtail Millet Combine Harvester

Zhenwei Liang (), Jia Liu, Deyong Yang and Kangcheng Ouyang
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Zhenwei Liang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Jia Liu: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Deyong Yang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Kangcheng Ouyang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2024, vol. 15, issue 1, 1-16

Abstract: Due to the high plant height, heavy ear, and easy forward tilt of millet during harvesting, the reel of a traditional combine harvester is often difficult to adapt to the special growth characteristics of millet, resulting in serious grain loss. Therefore, optimizing the design of the reel is important to improve the harvesting efficiency of millet and reduce the grain header loss. In order to determine the optimal reel speed ratio(λ), kinematics simulation experiments and analysis were carried out under different combinations of forward speed and reel revolution speed. The results showed that the supporting effect of the reel is insufficient when λ ≤ 1, and the trochoidal trajectory of the reel can provide a backward driving force when λ > 1, the optimum speed ratio of the reel should be controlled between 1.5 and 1.6. Field experiments results showed that the grain header loss rate was the lowest (0.9%) when λ = 1.6. This study provides key guidance for the adjustment of the combine harvester, effectively reducing the grain header loss rate in harvesting millet, and improving the harvesting efficiency.

Keywords: foxtail millet; combine harvester; reel; reel speed ratio; RecurDyn (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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