| Design and simulation of pneumatic direct insert hill-seeder with corn whole plastic-film on double ridges |
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| DOI：10.7606/j.issn.1000-7601.2018.05.40 |
| Key Words: whole plastic-film on double ridges hill-seeder pneumatic direct insert design simulation |
| Author Name | Affiliation | | DAI Fei | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China | | GAO Ai-min | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China | | ZHANG Feng-wei | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China | | HAN Zheng-sheng | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China | | ZHAO Wu-yun | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China | | WANG Song-lin | College of Mechanical and Electrical Engineering, Gansu Agricultural University, Lanzhou， Gansu 730070, China |
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| Abstract: |
| The furrow sowing with whole plastic-film mulching on double ridges was widely used in the arid region of northwest China for its drought resisting and production increasing. The mechanical sowing on film was an inevitable trend in farming. On the basis of corn whole plastic-film on double ridges agricultural technical requirements, the pneumatic direct insert precision hill-seeder was designed. The key operation parameters of the operating machine were calculated and combined with STEP control function for the seeding trajectory simulation analysis. To reveal the interaction mechanism of pneumatic seeding unit punching opener and seedbed soil, ABAQUS finite element method was used to build the three-dimensional interactions model. The corresponding alternating stress nephogram, alternating spatial displacement nephogram and alternating plastic strain nephogram were obtained respectively. Simulation results showed,the maximum interaction stress nephogram of taper punching-opener and seedbed soil was 1.541 MPa under the same pneumatic direct insert sowing force, which was 1.39 times as much as the cuneiform punching-opener. Within the same load and analytical step time, the maximum plastic deformation of taper punching-opener and seedbed soil was 19.35 mm, and the maximum plastic deformation of cuneiform punching-opener and seedbed soil was 12.35 mm. Therefore, the taper punching opener had the better ability to form a hole and dig the soil effect than the cuneiform punching opener. The study results would provide the reference for the development of the mechanized seeding equipment for the corn whole plastic-film on double ridges in the northwest arid region of China. |
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