Theoretical analysis and experiment of seed-picking mechanism of belt high-speed seed-guiding device for corn
Journal of Agricultural Engineering, ISSN: 2239-6268, Vol: 55, Issue: 1
2024
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Heilongjiang Bayi Agricultural University Researchers Provide New Study Findings on Agricultural Engineering (Theoretical analysis and experiment of seed-picking mechanism of belt high-speed seed-guiding device for corn)
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Article Description
Under the condition of high-speed sowing (12-16 km/h) due to the high rotational speeds of the seed disk, the seeds leave the disk at an excessively high speed, which challenges the seed-picking capacity of the belt-type high-speed seed guide device. In this paper, the theory of the seed-picking mechanism is analyzed, and performance optimization tests are completed to further improve the operation effect of the seeder. The mechanical model of seed picking was established through the force analysis of seeds. The influence of vacuum degree, feeder wheel rotation speed, and seed-picking angle on seed-picking quality and the parameter range of each factor were obtained by single factor test. A threefactor five-level quadratic orthogonal rotation combination test was performed, and the test results were refined and evaluated. The test factors used were vacuum degree, feeder wheel rotation speed, and seed-picking angle. The test indexes used were the seed-picking rate, re-picking rate, and miss-picking rate. According to the results, the seed-picking rate was 99.89%, the repicking rate was 0, and the miss-picking rate was 0.11% when the vacuum degree was 6.89KPa, the feeder wheel rotation speed was 568.95rpm, and the seed-picking angle was 7.6°.
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