Bearings – Rotary bearing – Fluid bearing
Patent
1995-09-29
1996-10-22
Footland, Lenard A.
Bearings
Rotary bearing
Fluid bearing
384307, 384308, F16C 1706
Patent
active
055670571
ABSTRACT:
An equalizing tilting pad thrust bearing assembly with inner and outer concentric retaining rings supporting an array of upper and lower equalizing links which support a circular array of tilting bearing pads. Each tilting pad has a flat bottom surface supported by a raised radial cylindrical surface on the upper side of an upper equalizing link. The pads tilt circumferentially to develop a hydrodynamic lubricating wedge by rolling on the radius of the raised cylindrical surface of an upper equalizing link. Each bearing pad and its supporting upper equalizing link tilt together radially by rolling on the radius of two slightly crowned radial cylinders on the bottom surface of the upper link. Each upper link pivots circumferentially about a stub radial pin extending inward from the outer retaining ring which engages an axial slot in the upper link. Each lower equalizing link is supported by and pivots circumferentially about a radial pin whose opposite ends are fixed in the inner and outer retaining rings. The axes of the upper and lower link pivot pins and the interconnecting contact points all lie in a common plane when the equalizing links are in a position of zero pivoting angle. The inner and outer retaining rings are concentricly connected by radial spokes that serve as pad separators and direct fresh oil into the hydrodynamic oil film by means of grooves in the spokes.
REFERENCES:
patent: 4026613 (1977-05-01), Moravchik
patent: 4403873 (1983-09-01), Gardner
patent: 4501505 (1985-02-01), Chambers
patent: 5046864 (1991-09-01), Boller
Footland Lenard A.
Johnson Merrill N.
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