Original Articles
1 July 2025
Vol. 56 No. 3 (2025)
https://doi.org/10.4081/jae.2025.1902

Study on the seed metering performance of potato seed metering device with three claw type on DEM

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Potato, seed metering, simulation, DEM
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Authors

Linrong Shi
shilr@gsau.edu.cn
College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, China.
Erhao Chen
College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, China.
Yuhuan Sun
College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, China.

To solve the problems of high seed replaying rate and seed missing rate in the existing potato seed-metering device, a triangle chain claw potato seed-metering device was designed. Based on the discrete element method (DEM), the influence of seed picking claw and seed cleaning plate on the seed-metering process was analyzed. An orthogonal experiment was carried out with lateral spacing, vertical spacing, and terminal radian of the seed picking claw as experiment factors and the qualification rate as experiment indicator. The influence of relevant factors on seed picking performance was analyzed, and the optimal solution of seed picking claws was obtained. The target rate was 89.93% when the lateral spacing of the claw was 29.92 mm, the vertical spacing was 15 mm, and the terminal angle was 29.25°. Moreover, a single factor experiment was carried out with the angle of the seed cleaning plate as the experiment factor and the qualification rate and seed missing rate as the experiment indicators. The results showed that when the angle of the seed cleaning plate was 7.53°, the qualification rate was 90.1%, and the seed missing rate was 3.7%. In addition, an orthogonal experiment was carried out with seed picking speed, different types of seed picking claw, and the angle of seed cleaning plate as experiment factors, and the seed replaying rate and the seed missing rate as experiment indicators. Finally, the results of the simulation experiment were tested on the bench, and the seed replaying rate was 2.7%, and the seed missing rate was 1.9%.

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“Study on the seed metering performance of potato seed metering device with three claw type on DEM” (2025) Journal of Agricultural Engineering, 56(3). doi:10.4081/jae.2025.1902.
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