Design and Parametric Optimization Study of an Eccentric Parallelogram-Type Uprighting Device for Ratoon Rice Stubbles

Shuaifeng Xing, Yang Yu, Guangqiao Cao, Jinpeng Hu, Linjun Zhu, Junyu Liu, Qinhao Wu, Qibin Li and Lizhang Xu ()
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Shuaifeng Xing: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Yang Yu: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Guangqiao Cao: Nanjing Institute of Agricultural Mechanization, Ministry of Agriculture and Rural Affairs, Nanjing 210014, China
Jinpeng Hu: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Linjun Zhu: Jiangsu World Agricultural Machinery, Danyang 212300, China
Junyu Liu: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Qinhao Wu: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Qibin Li: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China
Lizhang Xu: College of Agricultural Engineering, Jiangsu University, Zhenjiang 212013, China

Agriculture, 2024, vol. 14, issue 4, 1-19

Abstract: To address the issue of reduced yield in the second season caused by damaged stubbles resulting from being compressed during the harvesting process of the first season’s ratoon rice, a device for rectifying the compressed stubbles was designed. Utilizing the DEM-MBD coupling simulation method, a simulation analysis was conducted to determine the range of key parameters and verify the feasibility of the solution. Using rotational speed, forward speed, and stubble entry angle as experimental factors and stubble rectification rate and second-season yield as evaluation metrics, a three-factor, three-level Box–Behnken response surface field trial was conducted. The theoretically optimal working parameter combination was found to be a forward speed of 1.4 m/s, device rotational speed of 75 rpm, and stubble entry angle of 39°. Under these conditions, three parallel experiments were performed, resulting in a rectification rate of 90.35% in the mechanically harvested and compressed area and a second-season yield of 2202.64 ± 35 kg/hm 2 . The deviation from the numerical simulation results of parameter optimization was less than 5%. These findings suggest that the designed stubble rectification device for ratoon rice can meet the requirements of stubble rectification during the first-season harvest of ratoon rice. Furthermore, it provides valuable insights for reducing harvest losses in the first season and further improving the level of mechanized harvesting for ratoon rice.

Keywords: ratoon rice; stubble uprighting; DEM-MBD analysis; response surface methodology 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: 2024
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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