Author
Listed:
- Zhenhua Lin
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Xiao Li
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Hao Sun
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Maile Zhou
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Jianjun Yin
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Jijia He
(School of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China)
- Daqing Yin
(College of Engineering, Northeast Agricultural University, Harbin 150030, China)
Abstract
As a core component of a fully automatic pepper transplanter, the performance of the seedling-picking mechanism is of particular significance. However, existing seedling-picking mechanisms have problems such as being prone to damaging the seedling roots and substrate, as well as having poor stability. To develop a highly efficient, stable, and minimally damaging seedling-picking mechanism, this study proposed a design scheme for a stem-clamping-and-pulling-out-type seedling-picking end actuator driven by a non-circular gear system. The specific methods and objectives include the following: (1) designing a differential non-circular gear system to replicate a manual picking trajectory accurately; (2) establishing a kinematic model and developing optimization software to determine the optimal parameter combination; (3) experimentally validating the mechanism’s performance through virtual simulations and bench tests. The bench tests showed that the mechanism could complete two seedling-picking operations per rotation, extracting an entire row (eight plants) in a single rotation at a speed of 30 r/min. The measured angles of the end effector at four key postures were highly consistent with simulation and high-speed camera data, with all key posture errors less than 1°. These results demonstrate the mechanism’s high accuracy, efficiency, and reliability.
Suggested Citation
Zhenhua Lin & Xiao Li & Hao Sun & Maile Zhou & Jianjun Yin & Jijia He & Daqing Yin, 2025.
"Design and Experimental Validation of Stem-Clamping-and-Pull-Out-Type Pepper Plug Seedling-Picking Mechanism,"
Agriculture, MDPI, vol. 15(14), pages 1-18, July.
Handle:
RePEc:gam:jagris:v:15:y:2025:i:14:p:1563-:d:1706440
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