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COMPARATIVE STUDY OF VERTICAL LOADS ON COIL AND LEAF SPRINGS AND THEIR APPLICATION IN AGRICULTURAL EQUIPMENT Engenharia na Agricultura
Lambrecht, Edson; Ferreira, Mauro Fernando; Medeiros, Fabricio Ardais; Reis, Ângelo Vieira dos.
This paper studied the behavior of helical springs compression and flat spring pressure by the action of vertical loads, and aimed to analyze the possibility of replacing a set of three coil springs in parallel and concentric for a flat spring without compromising the functioning and performance of the mechanism that compose it. Existing planters in the domestic market use coil springs and these have the function of applying load on the planter’s rows. They are complex and robust systems. The study was based on calculation methods and measurements were compared and discussed. For the three coils in parallel and concentric yielded a maximum total stress of 3.157N in compression, for a displacement (deformation) of 200mm. The leaf spring yielded a maximum...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Engenharia Agrícola; Agronomia; Mecanização Agrícola Agricultura familiar; Linha de adubação; Mecanismos sulcadores; Mola plana; Semeadoras.
Ano: 2017 URL: http://www.seer.ufv.br/seer/index.php/reveng/article/view/733
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FERTILIZER METER WITH DOUBLE OUTPUT DEVELOPED FOR FAMILY FARMING - ASSESSMENT OF THE MASS FLOW RATE Engenharia na Agricultura
Nogueira, Cesar Augusto Azevedo; Reis, Ângelo Vieira dos; Vasconcelos, Márcia Beatriz Sila.
The aim of this study was to establish the rotation influence of the meter component and the aperture of the hopper over the mass flow rate of solid fertilizer in a meter equipped with two outputs for dosed material, intended for use in small capacity planters. The meter was evaluated in laboratory using the fertilizer NPK 05-20-20, characterized according to water content, bulk density, particle size and repose angle. The experiment was designed to evaluate the combined effect of the angular speed of the rotor blades and the aperture of the hopper over the meter mass flow rate, in a factorial arrangement 4x4, with fve replications. The mass flow of this fertilizer was found to be directly proportional to the angular speed of the two output meter rotors and to...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mecanização Agrícola razão de distribuição de adubo; Adubação; Semeadoras adubadoras.
Ano: 2017 URL: http://www.seer.ufv.br/seer/index.php/reveng/article/view/730
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FUNCTIONAL STRUCTURE OF A PLANTER FERTILIZER ROW Engenharia na Agricultura
Lambrecht, Edson; Ferreira, Mauro Fernando; Medeiros, Fabricio Ardais; Reis, Ângelo Vieira dos.
In the search for fertilizer machinery on the market, we found there is a shortage of machines that suit the needs of farmers, because most of the times these machines have a need for power demand higher than that available in the properties, and are too big and expensive. The objective of this study was to use a systematic approach methodology, providing adequate functional structure suitable for a fertilizer row of low-power planter for direct seeding, organized by a block diagram. The chosen functional structure accomplishes the weight transfer to cut straw and to open fertilizer furrow on the same system, this functional structure will allow the creation of a simpler and more compact fertilizer row, in accordance to most of the needs of family-based...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Engenharia Agrícola Agronomia Mecanização Agrícola agricultura familiar; Aplicação de fertilizantes; Equipamentos agrícolas; Metodologia de projeto; Modelo de fases.
Ano: 2017 URL: http://www.seer.ufv.br/seer/index.php/reveng/article/view/789
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