Mejora del módulo de ensayos de la vida acelerada en rodamientos del laboratorio de diagnóstico técnico y eficiencia energética de la Facultad de Mecánica de la ESPOCH

Abstract

The accelerated life tests of bearings carried out in the Technical Diagnostic Laboratory determined that due to the overload exerted on the bearings, they reached temperature levels of 100°C and higher. Therefore, it is deduced that the characteristics of the lubricant were compromised. Thus, the objective of this Curricular Integration Work was to improve the accelerated life testing module in bearings of the Technical Diagnostic and Energy Efficiency Laboratory of the Faculty of Mechanics of ESPOCH. To carry out this project, the initial situation of the module through functional tests with the help of the VibraCheck 200 ABG, the characteristic vibration spectra of the misalignment due to the 2x increment were obtained, and the SATIR thermal imaging camera visualized the increase in temperature in the bearing and pillow blocks. In this way, useful elements for its improvement were identified in the reconstruction. A design software was used with which the pieces were sized for their structure, and the additional elements were selected based on their technical sheets, in addition to other different aspects for the Assembly of the module and its commissioning. The results obtained through thermographic analysis demonstrated a reduction in the temperature variation of the bearing without load from 15.3°C to 7.7°C concerning ambient temperature, and the vibrational analysis showed reduction of the 1x, 2x and 3x vibration harmonics of 3.269mm/s; 1,883 mm/s; 0.356 mm/s to 2.071 mm/s; 0.718mm/s; 0.219 mm/s respectively when applying a load demonstrating the failures experienced by the bearing. In this way, it is concluded that the improvement of the module made it possible to reduce the temperature and the amplitude of the undesirable harmonics.