| Design and test of a new type of potato seeder with integrated sowing and compensating |
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| DOI：10.7606/j.issn.1000-7601.2020.06.35 |
| Key Words: potato seeder miss\|seeding integrated seeding and compensation infrared radiation seeding monitoring one\|way clutch catching\|up compensation |
| Author Name | Affiliation | | YANG Hao | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Guanping | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | SUN Wei | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHU Liang | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | YANG Sen | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | WANG Chengjiang | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | ZHANG Hua | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China | | LIU Xiaolong | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: |
| Compensatory seed box and separated compensating seed channel are generally needed in current potato miss\|seeding compensation schemes. The coexistence of these two sets of device makes the potato seeder complex and the compensation accuracy is difficult to be achieved. Therefore, an idea of ‘integrated seeding and compensating potato planter based on one\|way clutch’ was proposed in this study. In this scheme, the seed\|metering power only came from ground wheels under normal planting with main power transmission one\|way clutch; however, during the compensation period, it is transferred to compensatory motor with the help of compensatory one\|way clutch. After compensation is completed, the system controller turns the compensatory motor off, and the seed\|metering power naturally comes back to the land wheels again automatically. Based on this working principle, the catching\|up compensation scheme can be adopted, during a calculated period of time, the seed potato on the latter spoon can directly catch up with the previous missed potato seed. The compensated seed potato can also move in the original seed channel, special channel for compensating potato seeds will no longer needed. In this way, the system structure is simplified and the reliability is improved. The field test of the prototype showed that, the misjudgment rate of the system was not more than 1‰; the average natural rate of miss\|seeding was not sensitive to the seed\|metering chain speed; the success rate of miss\|seeding compensation decreased rapidly with the increase of seed\|metering chain speed, however, even if it reached 0.8 m·s-1, on average, over 74% of missed potato seeds were compensated successfully. It was also found that, the average final rate of miss\|seeding was generally not more than 1/4 of the Average Natural Rate of miss\|seeding, the effect of miss\|seeding compensation was significant. |
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