Desenvolvimento de um programa para cálculo de componentes mecânicos e estruturais para transportadores de correia

Abstract

Mechanical design of components and equipaments used on mining area have being an amazing development along those last years. Studying it, we have perceived a great amount of methods of calculation for even mechanical and structural components used in its equipments. In order to improve the performance of the transportation equipmentsknown as Belt Conveyors we show here an objective and simple calculation methodology of some mechanical and structural elements for the belt conveyors like pulley shafts, metallic small structures and threaded rods as screws, anchors or pins seeking for gains on safety and standardization of these components. Its shown here an explanation of these calculation methodologies based upon the method of the allowable tension for the shafts and the method of the limit states for the metallic structures and threaded rods, beginning with the definition of the input data, the development of the sequence of analytic calculations and the interventions necessary for the choice of standardized elements with graphic interface made through Excel®. As a result, its proposed a process of standardization of these components, considering the established data from Brazilian standard NBR-6172 from 1995 which one can be followed by mechanical design companies and pulley shafts manufacturers and standard NBR-8800 from 2008 for the metallic structures and threaded rods manufacturers. Doing this, we believe that better execution of the projects can be achieved, minimizing the mistakesand reducing the times of planning, calculation, manufacturing and deployment.