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AssigneeApparatebau Rothemuhle Brandt & Kritzler
InventorSiegfried Schluter
Estimating the term…
A thrust or journal bearing which is suitable for use in particular in slow-running machines is intended to have as large as possible a bearing surface with a minimum diameter and at the same time to have optimal running properties and long life in normal operation, as well as good emergency running properties in the event of oil deficiency. Here a base body 2, e.g. a ring or a ring sector, bears sliding shoes 3 disposed in a uniform distribution peripherally and radially, on which is supported a plant bearing surface above a supporting film of lubricant. The sliding shoes 3 have an outline at least approximating to that of a square and are located congruently to each other on predetermined pitch circles d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x of the base body 2. The side length of the sliding shoes 3 increases from the interior to the exterior proportionately to the increase in the pitch circle diameter d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x and the adjacent sliding shoes 3 are in each case delimited from each other by fluted or grooved profiles 7, 7', 7". Two groups 7' and 7" of fluted or grooved profiles 7 run spirally, and the directions of curvature of them are counter to each other. They are preferably in each case in the shape of a logarithmic spiral.
In an axial thrust and support bearing for slow-running machines, including a base body (2) having an axis and a periphery, the base body being rotatable about the axis, a plurality of sliding shoes (3) having running surfaces (4) mounted on the base body (2), a plane bearing surface (9) extending perpendicularly of the axis supported by the sliding shoes (3), the sliding shoes (3) being arranged uniformly distributed in the radial direction and in the direction of rotation of the base body (2), each sliding shoe (3) having approximately the shape of a square having sides (3', 3"), wherein adjacent sliding shoes (3) are separated from each other by grooves (7) defined in the base body (2), the improvement comprising the sliding shoes (3) being arranged uniformly distributed on concentric circles (d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x) extending around the axis in the direction of rotation of the base body (2), the sliding shoes (3) on each of the circles (d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x) being congruent to each other, the lengths of the sides (3', 3") of the sliding shoes (3) increasing toward the periphery proportionately to the increase of the diameters of the concentric circles (d.sub.0, d.sub.1, d.sub.2 . . . d.sub.x), the grooves (7) extending in the shape of partial spirals, the grooves (7) being provided in two groups (7', 7"), wherein the grooves of the two groups intersect each other with oppositely directed curvatures.
Dependencies are inferred from the claim text.