数字农科院2.0

V-Shaped Toothed Roller Cotton Stalk Puller: Numerical Modeling and Field-Test Validation

文献类型： 外文期刊

作者： Wang, Zhenwei;Zhao, Weisong;Fu, Jingjing;Xie, Hu;Zhang, Yinping;Chen, Mingjiang

作者机构：

关键词： V-shaped tooth roller;removal ratio;orthogonal experiment;structure design

期刊名称： AGRICULTURE-BASEL

ISSN：

年卷期： 2023 年 13 卷 6 期

页码：

收录情况： SCIE（2023版）

摘要： The V-shaped toothed roller cotton stalk puller has a low removal ratio and weak pulling effect. Hence, we constructed a simplified mathematical model of the V-shaped tooth roller stalk puller based on elastic collision theory and simple beam theory and conducted a mechanical analysis based on this model to explore the causes of pulling errors and fractures. Specifically, the V-shaped tooth plates of the machine were optimized in an orthogonal experiment with the rotational speed, cogging angle, and ground clearance as the influencing factors, and the removal ratio as the evaluation index. This experiment was designed to enable analysis of the physical characteristics of cotton stalks, and the forces applied during the pulling process. Additionally, a V-shaped toothed roller-type stalk-pulling test bench was constructed. The results revealed that, unlike the cogging angle, the ground clearance significantly affected the removal ratio. Furthermore, the highest removal ratio (i.e., 97%) was achieved when the ground clearance was -20 mm, the rotational speed was 300 rpm, and the cogging angle was 32.5 & DEG;. An L-9 (3(4)) orthogonal field experiment was also conducted with the rotational speed, cogging angle, and ground clearance as the influencing factors to investigate their respective influences on the stalk removal ratio. The results revealed that the ground clearance most significantly influenced the ratio, followed by the rotational speed, and cogging angle. The ground clearance and rotational speed of the V-shaped toothed roller were each found to significantly influence the ratio. Furthermore, a ground clearance of -20 mm, rotational speed of 300 r/min, and cogging angle of 25 & DEG; yielded an average removal ratio of 98.27%. Through this research, the mechanism of toothed roller stalk pulling is further deepened and the toothed series stalk pulling technology provides theoretical support.

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