Dimensionamento de um guindaste rotativo montado em coluna considerando as necessidades operacionais e a norma ABNT NBR 8400

Abstract

This study presents the design of a column-mounted rotary crane, developed to optimize the handling of logs and other materials in a plywood company. The project aims to replace manual methods, which are considered risky, with a safer and more efficient solution. The crane was designed to support loads of up to 1200 kg, with a reach of 4 meters and 360° rotation, in compliance with the ABNT NBR 8400 standard. The methodology employed combines Design Failure Mode and Effects Analysis (DFMEA), according to the SAE J1739 standard, with machine design methodology. The project included the definition of operational requirements, the selection of the crane model, and the lifting system. The structural design encompassed the boom, column, shaft, base, and fasteners, as well as the roller shafts, main shaft bushing, and welded joints. Finite element analysis (FEA), using Ansys software, verified the structural integrity of the crane, confirming its safety and efficiency, with stresses and deformations within acceptable limits. The application of the NBR 8400 standard was essential to ensure the safety of the equipment, providing guidelines for design and classification. The results indicate that the crane meets the requirements, proving to be an effective solution. It is recommended to validate the design through practical testing.