Coupled Bionic Design Based on Primnoa Mouthpart to Improve the Performance of a Straw Returning Machine

Jiale Zhao, Xiaogeng Wang, Jian Zhuang, Huili Liu, Yijia Wang and Yajun Yu
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Jiale Zhao: Key Laboratory of Bionics Engineering, Ministry of Education, Jilin University, Changchun 130025, China
Xiaogeng Wang: College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China
Jian Zhuang: Key Laboratory of Bionics Engineering, Ministry of Education, Jilin University, Changchun 130025, China
Huili Liu: Key Laboratory of Bionics Engineering, Ministry of Education, Jilin University, Changchun 130025, China
Yijia Wang: Department of Industrial and Manufacturing Systems Engineering, The University of Hong Kong, Hong Kong, China
Yajun Yu: College of Biological and Agricultural Engineering, Jilin University, Changchun 130025, China

Agriculture, 2021, vol. 11, issue 8, 1-14

Abstract: The high energy consumption and low crushing length qualification rate of traditional straw returning machines in the main maize-growing regions of northeast China make it difficult to promote straw returning operations in the region. The primnoa locust mouthpart is extremely efficient in cutting maize rootstocks. In this paper, it was found that there are significant differences between the primnoa locust mouthpart and the conventional machine, these exist mainly in the cutting edge structure and cutting motion. Thus, this paper develops a coupled bionic design for structural and kinematic coupling elements to develop a bionic straw returning machine. This paper found that the operating performance of the bionic straw returning machine was mainly affected by the blade rotation radius and the output rotation speed of the drive mechanism through DEM (discrete element method) simulation, and the optimal combination of the two parameters was 248 mm rotation radius and 930 r/min output rotation speed. Finally, this paper finds that the most obvious operational performance difference of the bionic straw returning machine compared with the traditional straw returning machine is that it can reduce the cutting power consumption by 9.4–11.7% and improve the crushing length qualification rate by 10.4–14.7% through the operational performance comparison test. Based on the above findings, this paper suggests that in future research and development of straw returning machines, more attention can be focused on finding suitable bionic prototypes and improving bionic design methods.

Keywords: straw returning; coupling bionic; cutting energy consumption; crushing length qualification rate; maize straw (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: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

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