Contribution to Geometrical Identification of Carriers in Radial Axial Bearings with Big Diameters

Abstract

A large number of building and transporting machines with rotating platform have a carrying structure with radial axial bearings of big diameters. Application of such bearings demands certain conditions which have to be fulfilled by the bearing carriers which are, primarily, related to the rigidity of carrier members. The paper defines some influential parameters of bearing carriers which have domineering effects on preventing deflection of the supporting area of bearings. The values of relation between height and width of box-like cross section (coefficient k) are defined, as well as relation between moments of inertia during bending and twisting of transverse and longitudinal beam of the carrier (coefficient e) in case of constant values of carrier deflection f and rigidity of longitudinal beam B2. Also, theoretical dependence between the values of additional forces at support is defined in terms of change of distance between longitudinal beams of the carrier.