COMPARATIVE ANALYSIS OF POWER TRANSMISSION GEARBOXES WITH HIGH GEAR RATIOS

Abstract

In modern industrial practice, there is a growing need for power transmission gearboxes with high gear ratios. Until a few decades ago this requirement was solved using conventional gear types (cylindrical, bevel, worm and planetary). The development of science has also resulted in the emergence of new types of power transmission gearboxes (harmonic drives, cycloidal reducers, ...) which are more often used today, especially when high gear ratios are required. Within this paper planetary reducer, cycloidal reducer and harmonic drives are presented. Their basic operating characteristics as well as the field of application in different working conditions are described. Mutual comparison was made from the aspect of dimensions, mass and efficiency for different gear ratios. For this purpose, catalogues of renowned manufacturers of these types of reducers have been used. The advantages of using new generation reducers are presented in this paper. Paper concludes with observations and guidelines for future research in this field were presented.