The Results of Changing the Current Solution Concept of Universal Motor Gear Reducers with Helical Gears

Marko Penčić,Dijana Čavić,Nicolae Florin Cofaru,Mirjana Bojanić Šejat,Siniša Kuzmanović,N.F Cofaru,Srđan Nikačević,Milan Rackov,Ivan Knežević,Maja Čavić,M Inţă

doi:10.1051/matecconf/202134301012

Abstract

By analysing and comparing the existing solutions of universal gear reducers with helical gears of the leading manufacturers, it can be noticed the effort to increase the load capacity of the gear reducer within the same axis height. In this way, the manufacturers can offer smaller (cheaper) gear reducers, as well as to simultaneously increase the values of the largest gear ratios. This concept enables the offer of lower-stage (cheaper) gear reducers with higher gear ratios in certain segments of gear ratios. By these efforts, it is reached the maximum, but the further increase is possible only by changing the current concept of universal gear drives. Within this paper, it is given an overview and analysis of one of the possible new conceptual solutions of modern universal motor gear reducer.

Highlights

Almost all manufacturers of universal gear reducers try to increase the load capacity of their gear reducers by applying a larger module, i.e. by reducing the number of teeth of the drive gear, and by increasing the centre distance, i.e. by increasing the diameter of the driven gear, which conditioned the expansion of the housing and its opening so that these large gears could be installed in it
In addition to increasing the bearing capacity, they try to increase the highest values of gear ratios, by the same such interventions, and above all by reducing the number of teeth of the first gear in order to enable the offer of lower gears
It should be noted that some manufacturers, who make universal gear reducers in a universal housing for two and three-stage gear reducers, can achieve or slightly lower, values of load capacity and gear ratios, which leads to the conclusion that the use of gear reducers with output gear set down, justified only by the possibility of its simple connection with the feet and the flange, ie. due to the possibility of using only one connection housing via the foot and the flange

Summary

Introduction

Almost all manufacturers of universal gear reducers try to increase the load capacity of their gear reducers by applying a larger module, i.e. by reducing the number of teeth of the drive gear, and by increasing the centre distance, i.e. by increasing the diameter of the driven gear, which conditioned the expansion of the housing and its opening (usually from the upper, it can be the lower side) so that these large gears could be installed in it.

Problem description and analysis

Solving the problem

Conclusion