Investigation of Collision Damage Mechanisms and Reduction Methods for Pod Pepper

Gaoliang Wang, Binghua He, Dianlei Han, He Zhang, Xinzhong Wang, Yongcheng Chen, Xuegeng Chen, Rongqiang Zhao and Guoyu Li ()
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Gaoliang Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Binghua He: Changyi Modern Agriculture Development Center, Changyi 261502, China
Dianlei Han: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
He Zhang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Xinzhong Wang: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Yongcheng Chen: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Xuegeng Chen: School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Rongqiang Zhao: School of Biological and Agricultural Engineering, Jilin University, Changchun 130022, China
Guoyu Li: School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, China

Agriculture, 2024, vol. 14, issue 1, 1-17

Abstract: This study aims to address the current situation of the late start of mechanized harvesting technology for the pod pepper, the high damage rate of existing pod pepper harvesters, and the lack of theoretical support for key harvesting components. The Hertz theory is employed to investigate the damage mechanism of collisions between pod pepper and comb fingers. The study analyzes the maximum deformation of pod pepper and the critical speed at which damage occurs during the collision process. Furthermore, it explores the critical relative speed that leads to damage in pod pepper. Orthogonal tests are conducted to analyze the effects of rotational speed, hose thickness, and moisture content on the efficiency of pod pepper picking. The experimental results are then subjected to multifactorial ANOVA to identify the optimal test parameters. The structural and motion parameters of the picking device are optimized based on these conditions. It is determined that the critical relative velocity for damage to pod pepper during a collision with the comb finger is V 0 = 11.487 m s −1 . The collision velocities of pod pepper with different hose thicknesses are analyzed using the i-SPEED TR endoscopic high-speed dynamic analysis system to obtain the corresponding collision velocities for different hose thicknesses. The study finds that rotational speed, hose thickness, and the water content of pod pepper affect the damage rate and stem shedding rate. The optimal experimental parameters are determined to be a rotational speed of 705.04 rpm, hose thickness of 3 mm, and water content of the pepper of 71.27%.

Keywords: comb finger; Hertz contact theory; collision speed; damage reduction methods (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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