Back to Search Start Over

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

Authors :
Jiale Zhao
Xiaogeng Wang
Jian Zhuang
Huili Liu
Yijia Wang
Yajun Yu
Source :
Agriculture, Vol 11, Iss 8, p 775 (2021)
Publication Year :
2021
Publisher :
MDPI AG, 2021.

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.

Details

Language :
English
ISSN :
20770472
Volume :
11
Issue :
8
Database :
Directory of Open Access Journals
Journal :
Agriculture
Publication Type :
Academic Journal
Accession number :
edsdoj.01148baa43904ca89aac25b75dbaa0e9
Document Type :
article
Full Text :
https://doi.org/10.3390/agriculture11080775