Influência do desgaste das garras dos pneus e das condições superficiais do solo nas operações de campo de um trator agrícola

• Autor(a) principal: Jesuino, Paulo Roberto [UNESP]
• Data de Publicação: 2011
• Outros Autores: Lanças, Kléber Pereira [UNESP], Gabriel Filho, Antonio, Masiero, Fabrício Campos [UNESP]
• Tipo de documento: Artigo
• Idioma: por
• Título da fonte: Repositório Institucional da UNESP
• Texto Completo: http://dx.doi.org/10.17224/EnergAgric.2011v26n3p141-159; http://hdl.handle.net/11449/137442
• topic: Efficiency; Drawbar traction; Slippage tires; Fuel consumption; Eficiência; Força de tração; Patinagem; Consumo de combustível

The objective of this work was to compare the performance of a tractor equipped with used and new bias-ply tires (63.4% and 41.2%, front and rear tire waste, respectively), in three surface conditions: tillage soil, vegetal covered soil and firm soil. Field data were collected to calculate: forward speed, front and rear slippage tires, drawbar pull, available power at drawbar bar and fuel consumption. Results showed that both, tires and soil conditions, changed tractor capacity on developing drawbar traction. The worst performance was observed on tillage soil. The best performance of the tractor was observed at firm soil track. On the track with tilled soil, results showed that the forward speed was the lowest among the three soil conditions due to the front and rear slippage tires which was higher than vegetal covered and firm soil tracks. Fuel consumption results showed higher values on tilled tracks when compared with firm and vegetal covered tracks. The fuel consumption levels evaluated on bias-ply tires lead to significant changes on tractor’s performance at tilled soil, indicating that, at this condition, it’s necessary to replace the used tires by new tires. For vegetal covered soil operations, and also on firm soil conditions, used tires, at studied levels, indicated that these tires might still be used without tractor performance changing.