Experimental Dynamic Rigidity of an Elastic Coupling with Bolts

Marilena Ghitescu,Ion-Marius Ghitescu,Paul Nicolae Borza,Sorin Vlase

doi:10.3390/sym13060989

Marilena Ghitescu, Ion-Marius Ghitescu + Show 2 more

Open Access

https://doi.org/10.3390/sym13060989

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Abstract

The paper presents an elastic coupling with bolts and intermediary non-metallic elements, which allows for radial and axial deviation and can absorb shocks and torsional vibrations. The designed bolts have a particular shape of a circular area of a length equal to the width of the non-metallic element, a cylindrical area larger than the diameter of the cylindrical groove where the non-metallic elements are mounted, and a cylindrical area smaller than the threaded area to avoid stress concentrators and bolt breakage. The coupling represents a symmetrical piece, having two planes of symmetry. Therefore, the study of such a mechanical system can be considerably simplified considering the design and description of the repeating elements. The novelty of this coupling consists in the existence of an intermediate disc between two half-couplings (driving and driven half-coupling). The non-metallic elements with different shapes are made of different types of rubber, mounted on cylindrical bolts fixed by the driving half-coupling, transmitting the motion in both directions.

Highlights

In the field of engingeering, an elastic coupling can make a significant contribution when two machines work together [1,2,3,4,5,6,7,8]
For elastic couplings with bolts, a large variety of solutions and materials are used depending on the demands and practical role
From the study carried out in this domain of elastic couplings using non-metallic elements, we found that there are elastic couplings with bolts having simple functional and designing principles

Summary

Introduction

In the field of engingeering, an elastic coupling can make a significant contribution when two machines work together [1,2,3,4,5,6,7,8]. Symmetry 2021, 13, 989 by mounting the non-metallic element between the plates and not in bores processed in semi-couplings, it allows the non-metallic element to relax, this being required besides crushing, shearing, and traction; transmits the torque in both directions regardless of the chosen direction of rotation, as it does not become rigid; different elastic characteristics can be obtained, depending on the constructive3shape of 12 and the material of the non-metallic elastic element; ensures the compensation of radial and angular deviations; the designed coupling has a simple construction, small overall dimensions and a low from condition of resistance ofwith the non-metallic crushing and cost,the compared to the classic ones non-metallic element elementsbesides and bolts.

Constructive

The test coupling

Experimental

Discussion

Conclusions