Desempenho e custos operacionais de um harvester em floresta de baixa produtividade
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Engenharia na Agricultura
Abstract
O objetivo deste trabalho foi avaliar o desempenho e os custos de um harvester em floresta de eucalipto de baixa produtividade. Um estudo temporal foi realizado para se conhecer o tempo de cada elemento do ciclo operacional. Dados de custo operacional e de produção foram fornecidos pela empresa onde foi realizada a pesquisa. A etapa que consumiu mais tempo foi a de processamento (66%), seguida pelo deslocamento (20%), abate (9%) e paradas (5%). A produtividade média foi de 7,92 m³sc h-1, com um volume individual médio de 0,125 m³sc arv.-1 e eficiência operacional média de 57%. O custo da hora efetivamente trabalhada foi de R$ 218,99 e o custo de produção foi de R$ 27,72 m3sc, O custo de produção se mostrou sensível às pequenas mudanças de produtividade. Os custos variáveis representam 69% do total, seguidos dos custos fxos (18%), de administração (9%) e de mão de obra (4%).
The objective of this study was to evaluate the performance and cost of a harvester in eucalyptus forest with low productivity. A time study was carried out in order to know the time spent by each element of the operating cycle. Results showed processing as the most time-consuming step, followed by displacement, slaughter and the stops. The average productivity was 7.92 m3 h -1 sc, with an average of individual volume of 0,125 m3sc arv. -1 , and an average operating efficiency of 57%. The cost for hours actually worked was R$ 218,99 and the cost of production was R$ 27,72 m -3 sc. The production cost proved quite sensitive to small changes in productivity. Variable costs represent 69% of the total cost, followed by fixed costs (18%), administrative costs (9%) and labor costs (4%).
The objective of this study was to evaluate the performance and cost of a harvester in eucalyptus forest with low productivity. A time study was carried out in order to know the time spent by each element of the operating cycle. Results showed processing as the most time-consuming step, followed by displacement, slaughter and the stops. The average productivity was 7.92 m3 h -1 sc, with an average of individual volume of 0,125 m3sc arv. -1 , and an average operating efficiency of 57%. The cost for hours actually worked was R$ 218,99 and the cost of production was R$ 27,72 m -3 sc. The production cost proved quite sensitive to small changes in productivity. Variable costs represent 69% of the total cost, followed by fixed costs (18%), administrative costs (9%) and labor costs (4%).
