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Abstract(s)
Cada vez mais os equipamentos hidráulicos utilizados para a movimentação de grandes
cargas, quer seja na agricultura, indústria ou construção têm de ser muito versáteis, a
fim de conseguirem efetuar os vários trabalhos a que se destinam.
O caso de estudo refere-se a uma giratória multifunções da marca Mecalac 12 MXT,
sendo o objeto de estudo da dissertação a análise dos parâmetros hidráulicos para
identificação de falhas dos vários sistemas hidráulicos, uma vez que este equipamento
sofreu uma profunda intervenção técnica de substituição de componentes hidráulicos
depois de largas horas de funcionamento sem ser seguido o plano de manutenção
adequado ao seu bom funcionamento, tendo perdido grande parte das suas funções de
trabalho após a intervenção.
Sendo a atividade de manutenção, uma parte essencial para o objetivo de assegurar as
perfeitas condições de trabalho dos equipamentos, é por isso de extrema importância
seguir os planos de manutenção aconselhados pelos fabricantes, de modo a reduzir
custos de operação e ajudar na longevidade dos equipamentos.
Para tal, e com base no manual de reparação do equipamento, foram identificados os
movimentos afetados pela intervenção referida, sendo estudados todos os vários
sistemas hidráulicos que constituem o equipamento e respetivas eletroválvulas.
Após a identificação dos sistemas hidráulicos inoperativos, foram efetuadas as
intervenções recomendadas no manual de reparação do fabricante. Com o objetivo de
se solucionarem as anomalias, optou-se por esta estratégia uma vez que este
equipamento já tinha sido intervencionado e também porque o manual de reparação
existente é um pouco escaço em termos de falhas hidráulicas.
Increasingly, the hydraulic equipment used to move large loads, whether in agriculture, industry or construction, must be very versatile in order to perform the various tasks for which they are intended. The case study refers to a multifunction gyratory of the Mecalac 12 MXT brand, being the object of study of the dissertation the analysis of the hydraulic parameters for the identification of failures of the various hydraulic systems, since this equipment suffered a deep technical intervention of replacement of hydraulic components after many hours of operation without being followed the maintenance plan suitable for its proper functioning, having lost much of its work functions after the intervention. As maintenance activity is an essential part of the objective of ensuring perfect working conditions for equipment, it is therefore extremely important to follow the maintenance plans recommended by manufacturers, in order to reduce operating costs and help ensure the longevity of the equipment. To this end, and based on the equipment repair manual, the movements affected by the aforementioned intervention were identified, and all the various hydraulic systems that make up the equipment and their respective solenoid valves were studied. After the identification of the inoperative hydraulic systems, the interventions recommended in the manufacturer's repair manual were performed in order to solve the anomalies. This strategy was chosen because this equipment had already been serviced and also because the existing repair manual is rather scarce in terms of hydraulic failures.
Increasingly, the hydraulic equipment used to move large loads, whether in agriculture, industry or construction, must be very versatile in order to perform the various tasks for which they are intended. The case study refers to a multifunction gyratory of the Mecalac 12 MXT brand, being the object of study of the dissertation the analysis of the hydraulic parameters for the identification of failures of the various hydraulic systems, since this equipment suffered a deep technical intervention of replacement of hydraulic components after many hours of operation without being followed the maintenance plan suitable for its proper functioning, having lost much of its work functions after the intervention. As maintenance activity is an essential part of the objective of ensuring perfect working conditions for equipment, it is therefore extremely important to follow the maintenance plans recommended by manufacturers, in order to reduce operating costs and help ensure the longevity of the equipment. To this end, and based on the equipment repair manual, the movements affected by the aforementioned intervention were identified, and all the various hydraulic systems that make up the equipment and their respective solenoid valves were studied. After the identification of the inoperative hydraulic systems, the interventions recommended in the manufacturer's repair manual were performed in order to solve the anomalies. This strategy was chosen because this equipment had already been serviced and also because the existing repair manual is rather scarce in terms of hydraulic failures.
Description
Keywords
Equipamento Falhas Manual de Reparação Manutenção Sistema Hidráulico