| Simulation analysis and experiment on the operation process of mechanized double ridge tillage and fertilization operation |
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| DOI：10.7606/j.issn.1000-7601.2023.05.28 |
| Key Words: double ridge tillage and fertilization device simulation discrete element method qualified rate of seed bed tillage qualified rate of fertilization |
| Author Name | Affiliation | | LI Wenlong | 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 | | ZHAO Wuyun | 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 | | SONG Xuefeng | 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 |
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| Abstract: |
| In order to study the effects of different structural devices on the performance and the quality of seed bed construction, the numerical simulation of ridging, ditching and fertilization was carried out by using discrete element method. The operation molding effect and excavation resistance change characteristics of the two types of soil lifting shovel and fertilization shovel as well as the variation coefficient and stability of the fertilizer discharge uniformity of the two types of fertilizer discharge devices were respectively compared and tested. After optimization, the combination of the double\|wing trench shovel, the ordinary fertilizer shovel and the straight slot wheel fertilizer discharge device were obtained, and numerical simulation was carried out. The qualified rate of seeding bed tillage and fertilization was used as indicators to evaluate the effect of the device on the performance of seeding bed construction. The results showed that the qualified rate of seeding bed tillage and fertilization was 95.40% and 93.40% under the parameters of 0.50 m·s-1, 200 r·min-1 and 40 r·min-1 respectively. Field verification experiments showed that the average pass rate of fertilization was 90.30%, 3.10% lower than the simulation result, and the average pass rate of seed bed tillage was 93.60%, 1.80% lower than the simulation result. The results indicated that there was little difference between the actual working conditions and the simulation results, which verifying the accuracy of the simulation research model. |
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