Diagnóstico e solução para movimentos involuntários em um guindaste de carga

Abstract

The cargo lifting market has been increasingly strong, both in the domestic market and abroad. From a large wholesale network, which needs to build structures quickly to expand their business with speed to other cities and states, as well as to public health agencies, which in turn need to build campaign medical centers and centers of expertise to fight a pandemic that it spreads with speed through the oceans. For these and so many other examples that could be cited to be successful, it is necessary that the load lifting sector continues to gain strength and investment in technology. In view of this, the present work aimed to diagnose involuntary movements presented in some specific models of load lifting cranes, when submitted to monitored rest periods. After an initial test to verify the phenomenon, a brainstorm with the team involved allowed listing the possible causes and defining which interventions could be carried out to stop such effects. For each of these hypotheses, a specific test was planned and executed to validate it. At the end of the tests, it was possible to point to residual pressures in the system as the main cause of these movements, even though it was not possible to accurately identify the source of this pressure. As a solution to the problem, a component of the hydraulic circuit was replaced, which would efficiently isolate the hydraulic cylinder that performed the movement, when the equipment was at rest. [resumo fornecido pelo autor]