hydrodynamic bearings

Abstract

A hydrodynamic bearing includes an annular inner surface surrounding a rotary shaft to support and guide rotation thereof about the longitudinal rotation axis thereof in an upstream to downstream rotation direction. The inner surface includes an orifice for supplying lubricant and first and second discharge recesses distributed on either side of the supply orifice according to the width of the bearing. The first discharge recess opens into a first side groove and the second discharge recess opens into a second side groove. The first and second side grooves extend along a portion of the circumference of the bearing on lateral sides of the inner surface of the bearing, from the respective first and second discharge recesses towards a third discharge recess located downstream of the two recesses, to direct the lubricant collected by the first and second discharge recesses towards the third recess to be discharged outside the bearing.

Description

hydrodynamic bearings technical field The invention relates to a hydrodynamic bearing designed to carry a rotor or a rotating shaft according to the preamble of claim 1 . In particular, the invention relates to hydrodynamic bearings capable of carrying and guiding rotation of rotors or rotating shafts, such as are typically used to support high speed / high power rotating shafts (reduction gears or speed increase gears) in the gas and oil energy markets bearings. Bearings according to the invention are particularly suitable for high radial loads and high shaft speeds. Background technique Such a bearing is described, for example, in patent application US 2002 / 0018604 A1. Such bearings are usually in the form of a hollow cylindrical member comprising one or more cylindrical projections, the inner cylindrical portion of which is arranged to receive a rotating shaft, such as the pinion of a reduction gear, for Carrying said shaft and guiding said shaft in rotation, said inn...

AI Technical Summary

Problems solved by technology

- axial flow of lubricant in a direction substantially aligned with the longitudinal axis of rotation of said rotor, said flow further increasing losses due to injection from gears positioned close to said bearings