| Laying mechanism and experiment of industrial hemp windrower |
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| DOI：10.7606/j.issn.1000-7601.2025.05.29 |
| Key Words: industrial hemp harvest windrower laying mechanism laying angle |
| Author Name | Affiliation | | HAO Zhaohui | School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China
China Agricultural Machinery (Beijing) Technology Development Co., Ltd., Beijing 102206, China
School of Control Engineering, Xinjiang Institute of Engineering, Urumqi, Xinjiang 830023, China | | WU Zongjian | School of Mechanical and Electrical Engineering, Xinjiang Agricultural University, Urumqi, Xinjiang 830052, China | | CHEN Hongsheng | School of Mechanical Engineering, Taishan University, Tai’an, Shandong 271000, China | | YU Jingbo | China Agricultural Machinery (Beijing) Technology Development Co., Ltd., Beijing 102206, China | | XIAO Zuoling | China Agricultural Machinery (Beijing) Technology Development Co., Ltd., Beijing 102206, China | | ZHOU Tao | School of Control Engineering, Xinjiang Institute of Engineering, Urumqi, Xinjiang 830023, China | | ZHANG Yandong | School of Control Engineering, Xinjiang Institute of Engineering, Urumqi, Xinjiang 830023, China | | XU Tianyu | School of Control Engineering, Xinjiang Institute of Engineering, Urumqi, Xinjiang 830023, China |
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| Abstract: |
| Aimed at the problems such as blockage and poor laying quality of the industrial hemp windrower, the mechanisms of how the traveling speed and hemp\|throwing speed affected the laying angle were studied. Through theoretical analysis and calculation, the theoretical formula of the laying angle and the conditions for the plants not to topple towards the cutting platform were obtained: when the traveling speed was 3 km·h-1, and the theoretical hemp\|throwing speed ≥149.59 r·min-1. Obtained through MATLAB simulation analysis that when the hemp\|throwing rotational speed was constant, the laying angle decreased as the traveling speed increased, and the lower the hemp\|throwing rotational speed was, the faster the decreasing rate; when the traveling speed was constant, the laying angle increased as the hemp\|throwing rotational speed increased, and the higher the traveling speed was, the faster the increasing rate. Through field experiments, it was obtained that the relative error between the theoretical laying angle and the experimental laying angle was within the 5% confidence interval, which verified that the correction coefficient k=0.9 was reliable. The optimal parameter combination was obtained: the hemp\|throwing rotational speed was 306.90 r·min-1, and the traveling speed was 5.73 km·h-1. Under this parameter combination, the hemp stalk laying angle, angle difference, and root difference were 89.44°, 7.66°, and 20.47 mm. Based on the optimal parameter combination, the rotating speed and driving speed of the hemp cutting and paving machine were adjusted to 306 r·min-1 and 5.7 km·h-1, respectively, for field test verification. The measured industrial hemp laying angle was 88.6°, the angle difference was 7.9°, and the root difference was 20.78 mm, and their relative errors were all less than 5%. The results of the field tests showed that the theoretical formula of the laying angle was reliable and could provide a theoretical reference for the mechanized harvesting of industrial hemp in China. |
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