The Design and Experimentation of a Wing-Shaped Stubble-Breaking Device for Maize Stubbles

Xuanting Liu, Hongyan Qi, Shuo Wang, Zihe Xu, Peng Gao, Daping Fu and Yunhai Ma ()
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Xuanting Liu: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Hongyan Qi: College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, China
Shuo Wang: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Zihe Xu: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Peng Gao: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China
Daping Fu: College of Engineering Technology, Jilin Agricultural University, Changchun 250100, China
Yunhai Ma: Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun 130022, China

Agriculture, 2024, vol. 14, issue 12, 1-21

Abstract: To achieve high-quality no-till seeding, a wing-shaped stubble-breaking device with excellent stubble-breaking performance was designed for maize stubble. A model of maize stubble was developed based on the Discrete Element Method (DEM) and verified through soil bin tests. The DEM model was used to optimize the design parameters of the device and to investigate the interaction between the blades and the maize stubble during the stubble-breaking process. Field experiments were conducted to evaluate the performance of the device. The results indicated that the DEM model was accurate; when the optimal design parameters of the wing-shaped stubble-breaking device were a 37° slide cutting angle, 31° pitching angle, and 50 mm wing width, the average torque was 41.26 N·m, the soil breakage rate was 85.68%, and the soil backfill rate was 71.65%; the wing-shaped stubble-breaking device could separate the inside and outside of the strip tillage area and cut maize stubbles and soil blocks twice, thus having excellent stubble-breaking performance. This study provided an effective and feasible method for designing stubble-breaking devices and studying the interaction between blades, soil, and roots, which improved soil tillage theory and was beneficial in promoting conservation tillage technology.

Keywords: wing-shaped stubble-breaking device; discrete element method; maize stubble; average torque; soil breakage rate; soil backfill rate (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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