| Design and test of vertical cotton stalk crushing and returning to the field machine |
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| DOI：10.7606/j.issn.1000-7601.2022.01.29 |
| Key Words: cotton straw crushing and returning to the field machine fluid analysis parameter optimization |
| Author Name | Affiliation | | NIU Guoliang | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China
College of Water Conservancy, Shenyang Agricultural University, Shihezi, Xinjiang 832000, China | | LI Bin | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China | | LIU Yang | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China | | WANG Shiguo | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China | | WANG Tao | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China | | SUN Xiaoxiao | Machinery Equipment Research Institute, Xinjiang Academy of Agricultural and Reclamation Science, Shihezi, Xinjiang 832000, China
College of Water Conservancy, Shenyang Agricultural University, Shihezi, Xinjiang 832000, China |
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| Abstract: |
| To solve the problems of low work efficiency, high stubble retention, and mismatch with existing agronomy, a vertical cotton straw crushing and returning to the field was developed based on the Xinjiang cotton planting model and the requirements of straw crushing machine, mainly consisting of frame, cutting device and power transmission device. Fluent was used for fluid analysis to clarify the performance of the working machine and improve the working quality. The results showed that the new design of polyline rack, three groups of crushing knives, and the angle between the crushing knives and the ground of 3° were beneficial to the straw smash. The forward speed of the machine tool, the speed of the power output shaft and the ground clearance of the blade were selected as the test factors. The qualified rate of the straw length and the average height of the stubble were used as the evaluation indicators. Field experiments were carried out according to the principle of quadratic regression orthogonal combination test. Design-Expert V8.0.6.1 software was employed to conduct response surface analysis on the test results. It was concluded that the best operating parameters of the machine were: machine forward speed 3.5 m·s-1, large cutter head speed 1 200 r·min-1, small cutter head speed 1 380 r·min-1, and the blade tip 70 mm from the ground. Field experiments were conducted to verify the best operating parameters. The results showed that the qualified rate of straw length was 92.24%, the average height of stubble was 74.63 mm, and the error from the predicted value was 0.58% and 3.71%. The parameter optimization results were reliable. |
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