Design and Testing of a Directional Clamping and Reverse Breaking Device for Corn Straw

Xun He, Xudong Fan, Wenhe Wei, Zhe Qu, Jingzhao Shi, Hongmei Zhang () and Bo Chen
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Xun He: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Xudong Fan: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Wenhe Wei: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Zhe Qu: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Jingzhao Shi: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Hongmei Zhang: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China
Bo Chen: College of Mechanical and Electrical Engineering, Henan Agricultural University, Zhengzhou 450002, China

Agriculture, 2023, vol. 13, issue 8, 1-24

Abstract: Realizing high-quality and increased production of fresh corn and promoting diversified development of the corn industry structure not only can effectively promote the development of agricultural economy, but also can enrich people’s dietary culture. However, existing fresh corn machinery has a high rate of ear damage during the harvesting process, and the overall harvesting efficiency is not ideal. To reduce damage during the harvesting of fresh corn, a device for breaking ears of fresh corn was designed based on the directional clamping of corn straw reverse breaking method. Based on the physico-mechanical characteristics parameters of fresh corn ears, the main structural parameters of the directional clamping and conveying mechanism and the ear-breaking mechanism were determined. The overall inclination angle of the device was 15°, and the effective conveying length of the directional clamping mechanism was 550 mm; the ear-snapping mechanism was a snapping roll composed of a pair of six radial distribution function fingers, with an effective operating radius of 320 mm. By simulating and analyzing the reverse breaking movement of directional clamping corn straw, the key motion parameter ranges of the directional clamping conveying mechanism and breaking mechanism were obtained. The results of the bench test showed that under the optimal conditions of a directional clamping feeding speed of 1.67 m/s, a breaking wheel speed of 80 rpm, and a travel speed of 1.06 m/s, the lowest ear damage rate was 0.57%, and the lowest impurity rate was 1.87%. In addition, it was observed that flexible harvesting can improve harvest efficiency and quality. The study also found that actively applying force to the device can effectively avoid the problem of machine blockage and reduce the damage rate of ears (the following text uses ears instead of fresh corn ears).

Keywords: fresh corn; directional clamping; reverse ear breaking; bench test; optimal design (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 complete reference list from CitEc
Citations: View citations in EconPapers (1)

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