Seed Trajectory Control and Experimental Validation of the Limited Gear-Shaped Side Space of a High-Speed Cotton Precision Dibbler

Zibin Mao, Yiquan Cai, Mengyu Guo (), Zhen Ma, Luochuan Xu, Junwei Li, Xiangyu Li and Bin Hu ()
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Zibin Mao: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Yiquan Cai: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Mengyu Guo: Key Laboratory of Northwest Agricultural Equipment, Ministry of Agriculture and Rural Affairs, Shihezi 832003, China
Zhen Ma: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Luochuan Xu: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Junwei Li: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Xiangyu Li: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China
Bin Hu: College of Mechanical and Electrical Engineering, Shihezi University, Shihezi 832003, China

Agriculture, 2024, vol. 14, issue 5, 1-23

Abstract: In this paper, a cotton precision seed-taking dibbler device was designed to address the problems of congestion and leakage of the hole-type dibbler during high-speed operation (more than 4 km/h). Firstly, the motion trajectory of the seed in the limited gear-shaped space was analyzed and a motion model was established to analyze the relationship between the motion trajectory and seed-filling performance. Secondly, a central combination test with four factors and five levels was implemented using the discrete element software EDEM2018, which simulated the seed-filling performance of the seed-holding space with different structural dimensions. The optimal parameters impacting the seed-filling behavior of the designed dibbler were derived via response surface optimization and multiple regression analyses. Under optimal conditions, three bench tests were repeatedly conducted, and the average qualified index was 93.67%, the leakage index Y 3 was 2.67%, and the multiple index Y 2 was 3.66%, which was close to the simulation results. Finally, for the speed adaptability test of the seed-holding space with optimal structural parameters, the qualified index was more than 90% when the rotating speed ranged from 1.0 to 2.0 r/s (the speed of the corresponding dibbler was 5.4 km/h to 7.2 km/h), indicating that the dibbler could meet the requirements of high-speed operation and had good speed adaptability. The results can not only provide a reference for the development of precision hole-type dibblers but also have theoretical significance for the quantitative separation of the individual from the population of irregularly rotating agricultural materials and ore materials such as cotton seeds.

Keywords: agricultural planting machinery; seed-holding space; high-speed filling; parameter optimization (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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