Design and Experiment of Toggle Lever-Type Potato Picker

Kailiang Lu, Shengshi Xie (), Xiuzhi Gai and Xinjie Ji
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Kailiang Lu: College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010010, China
Shengshi Xie: College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010010, China
Xiuzhi Gai: College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010010, China
Xinjie Ji: College of Mechanical and Electrical Engineering, Inner Mongolia Agricultural University, Hohhot 010010, China

Agriculture, 2024, vol. 14, issue 6, 1-22

Abstract: To address the issues of significant soil blockage and high potato damage rates in current potato picking machines, this study developed a toggle lever-type potato picker designed to minimize potato damage and improve operational efficiency. Design calculations were performed for the picker components, and kinematic analyses were conducted for the toggle lever. Single-factor experiments were carried out to determine the variation in performance parameters of the potato picker under different experimental conditions. Discrete element simulations were performed to measure the peak soil height before the pick-up shovel and the peak force on potatoes during the pick-up process. A Box–Behnken response surface experiment was conducted using toggle lever speed, machine forward speed, and shovel angle as experiments factors. Subsequently, an analysis of variance was performed, and a mathematical regression model was established based on the experiments results. The findings revealed that at a toggle lever speed of 50 r/min, machine forward speed of 0.9 m/s, and shovel angle of 19°; the potato leakage rate was 2.32%, and the potato damage rate was 2.72%, thereby meeting the requirements stipulated by potato mechanized picking technology regulations.

Keywords: agricultural machinery; pick-up device; discrete element; EDEM; response surface (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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