| Design and simulation of precision seeder for flax in dryland ridge with plastic-film mulching |
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| DOI：10.7606/j.issn.1000-7601.2019.02.35 |
| Key Words: precision seeder flax ridge mechanism parameter indenting tool |
| Author Name | Affiliation | | ZHOU Gang | School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou, Gansu 730070,China | | SHI Lin-rong | School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou, Gansu 730070,China | | ZHAO Wu-yun | School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou, Gansu 730070,China | | XIN Shang-long | School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou, Gansu 730070,China | | YANG Xiao-ping | School of Mechanical and Electrical Engineering,Gansu Agricultural University,Lanzhou, Gansu 730070,China |
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| Abstract: |
| In order to solve the problems of low seeding efficiency, poor quality, and low seedling rate of the existing grain drilling machine and artificial seeding for flax, a precision seeder in dryland ridge plastic-film mulched surface in arid area of northwestern China was designed. To ensure the accuracy of the lifting and descending of the dibbling wheel during the diversion and transportation of the seeder, the parallelogram linkage mechanism and the rocker device were adopted, and the parameters of the mechanism were determined. The four-bar link profiling mechanism was adopted to improve the depth consistency of the dibbling wheel, and the maximum and lower profile amount was determined to be 89.87 mm, to verify the feasibility of profiling. In order to improve the seeding precision of the seeder, a new seed metering device was designed. The motion of plug-in in Solidworks was used to simulate the process of hole-forming and the effects of different slip rate (δ), machine advancing speed (v) and the depth of the indenting tool (h1) on width of hole (displacement of fixed duck-bill) were studied. The optimal results are obtained: when δ=11%, v=0.5 m·s-1, and h1=0.03 m, the slipping of the indenting tool was small, and it was not easy to produce the film-picking and tearing-film. |
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