Design and Experiment of Sweet Potato Up-Film Transplanting Device with a Boat-Bottom Posture

Lin Li, Yalei Xu, Zhiguo Pan (), Huan Zhang, Tianfeng Sun and Yuming Zhai
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Lin Li: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Yalei Xu: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Zhiguo Pan: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Huan Zhang: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Tianfeng Sun: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China
Yuming Zhai: College of Mechanical and Electrical Engineering, Qingdao Agricultural University, Qingdao 266109, China

Agriculture, 2022, vol. 12, issue 10, 1-25

Abstract: Aimed at solving the problem of the incidence of large film-breaking holes in the current sweet potato boat-bottom-shaped transplant, a boat-bottom-shaped up-film transplanting device was designed. Starting from the agronomic requirements of sweet potato up-film transplanting with a boat-bottom posture, an arc-shaped gripping mechanism was designed. In order to avoid further tearing and breaking the film hole during the movement of the clamping mechanism under the membrane, a transposition mechanism and a positioning cam were designed to jointly control the movement of the clamping mechanism. In order to ensure the stability of the transplanting plant spacing during the operation of the machine, a rotary encoder was used to collect the forward speed of the machine and adjust the speed of the power shaft in real time. Field experiments were carried out in order to verify the reliability and stability of the operation of the above-mentioned design mechanism. In the field test, the advance speed was used as the test factor, and the test indexes included three indexes of the seedlings after transplanting and three indexes of the film holes. The test results showed that the qualified rate of node depth in the middle of the seedling (QRNDMS) is between 95.67% and 86.79%, the qualified rate of root depth at the base of the seedlings (QRRDS) is between 94.00% and 90.11%, and the qualified rate of seedling length into the soil (QRSLS) is between 97.89% and 91.67%. The film hole spacing is between 240.33 mm and 245.32 mm, the film hole length is between 37.01 mm and 42.10 mm, and the film hole length variation rate is between 1.05% and 7.48%. This study can serve as a reference for up-film transplantation, particularly for boat-bottom-shaped up-film transplantation devices.

Keywords: sweet potato; up-film transplanter; boat-bottom-shaped; transplanting device; field experiment (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: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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