Research and Experimentation on Sparse–Dense Interphase Curved-Tooth Sorghum Threshing Technology

Jie Ma, Qinghao He, Duanyang Geng (), Lin Niu, Yipeng Cui, Qiming Yu, Jianning Yin, Yang Wang and Lei Ni
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Jie Ma: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Qinghao He: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Duanyang Geng: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Lin Niu: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Yipeng Cui: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Qiming Yu: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Jianning Yin: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Yang Wang: College of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255200, China
Lei Ni: Shandong Shanli Risheng Information Technology Co., Ltd., Zibo 255000, China

Agriculture, 2024, vol. 14, issue 10, 1-15

Abstract: The high-speed development of the liquor industry brings sorghum demand, which is increasingly strong at the moment. Still, its harvesting mechanization level is low, and with the design of a longitudinal flow sparse and dense curved-teeth sorghum threshing technology, the harvester’s work quality is improved by the reduction of seed impurities. This article describes the working principle of the harvester, the overall distribution of threshing elements, and force analysis of the threshing aspects to determine the structure of the threshing elements. The orthogonal test was carried out, with a sparse–dense interphase threshing drum as the research object, selecting operating speed, threshing element bending angle, and threshing element mounting angle as the test factors, with the entrainment loss rate and the net threshing rate as the assessment indexes for the three-factor, three-level test, and the use of Design-Expert to establish a mathematical regression model between the factors and the two indicators, resulting in the following optimized parameters: when the operating speed is 1.0 m·s −1 , the bending angle of the threshing element is 80°, and the mounting angle of the threshing element is 45°, the loss rate of entrainment is 1.89%, and the net threshing rate is 95.53%. The machine’s design indexes are in line with relevant national standards and can meet the demand for mechanized harvesting of sorghum.

Keywords: sorghum threshing; sparse–dense interphase; threshing elements; curved tooth (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
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