| Design and experiment of vibrating separating rhizome harvesting machine for Chinese medicinal materials |
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| DOI：10.7606/j.issn.1000-7601.2024.03.28 |
| Key Words: rhizome Chinese herbal medicine digging device eccentric drive vibration separation harvester EDEM-Recur Dyn |
| Author Name | Affiliation | | ZHANG Xuejian | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | DAI Fei | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | SHI Ruijie | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHAO Wuyun | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | MA Haijun | Gansu Tao River Tractor Manufacturing Co., Ltd., Dingxi, Gansu 730500, China | | ZHAO Xinping | Gansu Tao River Tractor Manufacturing Co., Ltd., Dingxi, Gansu 730500, China |
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| Abstract: |
| To solve the problems such as high digging resistance, insufficient digging depth, poor soil crushing ability and serious power loss, a vibratory digging and separating harvester for root and stem Chinese medicinal materials was designed. This new designed machine adopted vibration excavation device composed of eccentric wheel, primary medicine soil separation device, secondary medicine soil separation device and other structures to realize the excavation, separation and transportation of root and stem medicinal materials. The key components were redesigned, analyzed and simulated, and field tests were carried out. The simulation test showed that the digging shovel had good performance in soil, and the maximum displacement of digging and throwing on the roots was 165 mm. The conveying separation device was able to achieve a thorough separation between the roots and soil. The field test results showed that the net rate of the harvester was 95.14%, the damage rate was 1.24%, and the average digging depth was 400 mm, which was higher than the design minimum value. During the operation period, the whole machine ran smoothly, the operation index met the harvest standards of rhizome Chinese medicinal materials, met the requirements of mechanized harvesting of rhizome Chinese medicinal materials, which could be used as a vibrating separated rhizome Chinese medicinal material harvesting machine. |
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