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| Macedo,Deivielison X. S.; Nicolau,Francisca E. de A.; Nascimento,Henryque C. F. do; Costa,Enio; Chioderoli,Carlos A.; Loureiro,Danilo R.. |
| ABSTRACT The sowing process is one of the most important steps in agricultural production chain, requiring a good efficiency in order to avoid seed and plant population losses. In order to achieve a satisfactory performance of the seeder, the agricultural implement needs to be properly adjusted. Therefore, the present study aimed to verify both the operational performance and sowing quality of the agricultural equipment, depending on different working depths and different operating velocities. The experimental design was a factorial, with two theoretical velocities and three working depths. The velocity of 6.8 km h-1 achieved both a good operating consumption and a low fuel consumption per working area and when associated with working depth of 0.05 m... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mobilized área; Specific resistance; Operating consumption; Specific consumption. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000300280 |
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| Queiroz,Renata Fernandes de; Mota,Wesley Araújo da; Macedo,Deivielison Ximenes Siqueira; Costa,Enio; Chioderoli,Carlos Alessandro. |
| RESUMO O desempenho operacional de máquinas agrícolas está sujeito a alterações devido a fatores como carga a ser tracionada e a velocidade de trabalho, podendo interferir diretamente nos processos agrícolas mecanizados. A melhor forma de obter essas respostas é por meio de ensaios de desempenho operacional. Objetivou-se com o trabalho determinar o desempenho operacional do conjunto mecanizado trator-semeadora com diferentes cargas no depósito de adubo e regime de marcha do trator. O delineamento constitui-se de blocos casualizados, em esquema fatorial 3 x 2 com 4 repetições, sendo dois regimes de marcha (3 L e 4 L com velocidades médias de 1,25 e 1,80 m s-1) e três cargas de fertilizantes no depósito da semeadora-adubadora de fluxo contínuo (100; 75 e... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Patinagem; Potência; Consumo de combustível. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000200271 |
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| Santos,Viviane Castro dos; Monteiro,Leonardo de Almeida; Macedo,Deivielison Ximenes Siqueira; Costa,Enio. |
| ABSTRACT: Agricultural tractors have been reported to exert negative effects on operator health. It is well known that when a farm machine is designed it must consider the human factors, to raise the safety levels and work quality. The aim of the present study was to estimate the degree of vibration transmissibility from the agricultural equipment used for the periodic soil preparation process and determine the exposure of the whole body of the operator to the vibration, incident to the agricultural tractor during the operation. A 4x2 TDA tractor was employed, coupled to the periodic soil preparation equipment. Five sets were used (tractor- disk plough, tractor-moldboard plow, tractor-offset disc harrow, tractor-rotary hoe, and tractor-scarifier) and the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ergonomics; Agricultural machinery; Vibrations. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100351 |
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