| The design and test of air suction pepper harvester device |
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| DOI：10.7606/j.issn.1000-7601.2021.04.28 |
| Key Words: air\|suction pepper picker design parameter optimization zanthoxylum bungeanum |
| Author Name | Affiliation | | WAN Fangxin | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | SUN Haobo | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | PU Jun | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LI Shengyuan | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHAO Yongbiao | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | HUANG xiaopeng | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Due to the extension of the branches, thorns and small fruits of zanthoxylum bungeanum, manual picking is still a main method for harvesting, which has a low efficiency. In order to improve the harvesting efficiency and quality of zanthoxylum bungeanum, a tooth comb\|air suction picking device and theoretical analysis of picking flow field was tested. To improve the operation quality of the air suction pepper picking device, the “dahongpao” and “thorn pepper” pepper varieties were used as the test objects, and the self\|made air suction pepper picking device was used with the picking head speed, air flow speed and comb cutting edge angle of the blade as factors. The recovery rate, damage rate, were used as evaluation indicators to conduct a quadratic rotation orthogonal combination test. Through Design\|Expert 6.0.10 software, a mathematical regression model of the evaluation index and various influencing factors was established, the impact of significant factors on the evaluation index was analyzed and the test parameters were optimized. The optimal parameter combination was determined as follows: picking head speed 367.5 r·min-1, air velocity 32.7 m·s-1, comb\|tooth blade cutting edge angle 31.5°. Under this parameter combination, the harvesting effect was: the net recovery rate was 95.2%, the damage rate was 1.2%, and the recovery rate was 96.5% (that is the impurity content rate was 3.5%). The cutting\|edge angle of the comb blade was 32°, the fan flow rate was adjusted to 30 m·s-1, the picking head speed was 350 r·min-1, and the verification experiment was conducted. The harvesting effect: the net recovery rate was 91.8%, the relative error was 5.3%, and the damage rate was 1.3%. The relative error was 8.3%, the harvest cleanliness was 92.5%, and the relative error was 4.1%, which met the design requirements. |
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