Design and Experimental Study of a Bionic Blade for Harvesting the Wild Chrysanthemum Stem

Zhengdao Liu, Tao Wang, Suyuan Liu, Xiaoli Yan (), Hongbo Zhao, Xiaopeng Wu and Shuo Zhang
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Zhengdao Liu: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Tao Wang: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Suyuan Liu: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Xiaoli Yan: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Hongbo Zhao: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Xiaopeng Wu: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China
Shuo Zhang: College of Mechanical and Electronic Engineering, Northwest A&F University, Xianyang 712100, China

Agriculture, 2023, vol. 13, issue 1, 1-16

Abstract: Wild chrysanthemum has a high medicinal value. Its mechanized harvest can improve harvesting efficiency, reduce labor costs and improve planting benefits, which is an important way to promote artificial planting. However, one of the difficulties in mechanized harvesting is the large diameter and hardness of the stem, leading to high cutting resistance and power consumption. In order to reduce cutting resistance and power consumption, a bionic cutting blade is designed in this paper by employing the bionics principle and the contour of the cricket’s upper jaw incisor lobe instead of the sharp triangular teeth of the standard harvester blade. Using the finite element method, the cutting-edge angle, cutting angle, and reciprocating speed were taken as test factors. The maximum shear force and power consumption were taken as evaluation indexes. At the same time, the center combination simulation test was carried out to optimize the cutting body and to determine the optimal cutting speed. When the cutting-edge angle was 21°, the cutting angle was 66°, the reciprocating speed was 1.29 m/s, and the maximum shear force and power consumption were minimal. The results showed that the maximum shear force of the bionic cutter was reduced by 18% and the power consumption by 15.8%. The bench test showed that the maximum shear force and power consumption of the bionic cutter were reduced by 10.5% and 10.8%, respectively, when the entire wild chrysanthemum stem was cut. The results can provide a reference for the mechanical harvesting of wild chrysanthemum stems.

Keywords: wild chrysanthemum stem; maximum shear force; cutting power consumption; finite element; mechanization (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: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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