Detalhes bibliográficos
| Ano de defesa: |
2012 |
| Autor(a) principal: |
Niemczewski, Bóris Kluwe |
| Orientador(a): |
Reis, Ângelo Vieira dos |
| Banca de defesa: |
Não Informado pela instituição |
| Tipo de documento: |
Dissertação
|
| Tipo de acesso: |
Acesso aberto |
| Idioma: |
por |
| Instituição de defesa: |
Universidade Federal de Pelotas
|
| Programa de Pós-Graduação: |
Programa de Pós-Graduação em Sistemas de Produção Agrícola Familiar
|
| Departamento: |
Faculdade de Agronomia Eliseu Maciel
|
| País: |
BR
|
| Palavras-chave em Português: |
|
| Palavras-chave em Inglês: |
|
| Área do conhecimento CNPq: |
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| Link de acesso: |
https://guaiaca.ufpel.edu.br/handle/123456789/2378
|
Resumo: |
In Family Farming, the work is repetitive, and very tiring, and the labor is limited. Mechanization is the solution. The farmer cannot have knowledge to acquire adequate equipment, and a more powerful tractor can raise the fuel and maintenance costs, making it difficult for him to profit. For low power tractors, in the range of 18 kW (≈25 cv) with front wheel traction (FWT), there s only a few options of choice of planters considered adequate, and that the existing options are not satisfactory to the farmer needs. In this study, were defined the design requirements for a planter frame with characteristics for small properties, in a proposition of 4 rows to be pulled by a low power tractor. The methodology used in the design of the conception of the planter, and thus of the frame, was developed by the Santa Catarina University s Mechanical Engineering Department, which is based in a consensual model that divides the design process in 4 main phases: Informational Design, Conceptual Design, Embodiment Design and Detail Design. In the present work only the Informational and Conceptual Design phases were approached. The detailing of the referential theory of this methodology is shown by Reis and Forcellini (2002). The modeling of loading was developed for dimensioning the frame, employing a CAD 3D software and the analysis of the frame s structural static behavior, using the Finite Element Analysis technique, considering the actual work the machine would be subject to, was also done. To validate the model made by SolidWorks Simulation, a real scale prototype was subject to carrying vertical forces to compare the real deformations of the model with the displacements calculated by the software. The mathematical model was considered trustworthy, though the horizontal carrying was not conducted in the test. Despite the shortcomings observed owing to the impossibility of conducting loadings consistent with the reality of machine use in the field, the results are considered promising in this phase of product development. With the adopted solutions and the dimensioning done by the software SolidWorks Simulation, in the concept of the frame for sliding reservoirs, with four rows, and the proposal of just one fertilizer and seed meter for every two rows, it was possible to reduce the prototype frame s weight compared to the commercial machines observed for the execution of this study. |
