Axial bearing arrangement

摘要

A hydrodynamic axial bearing is provided with segments arranged on a circular ring on axial bearings, wherein a plurality of pressure fields are built up. The length of the individual segments is defined in the circumferential direction, between a first edge and a second edge. The first edge delimits the wedge surface of the segments. In fast-rotating bearings, the ratio of segment width to segment length has a decisive influence on the attainable load-bearing capacity and resulting friction losses. The load-bearing capacity and friction losses are improved by increasing the segment length more intensely with increasing radius. The first edge does not run straight but rather has steps, is arcuate or has linear portions with different gradients.

主权项

1. An axial bearing arrangement (11) for a rotating shaft (10) which extends in an axial direction, comprising
a non-rotating axial bearing (3) having a bearing surface (24), having a plurality of surface segments (25) which are distributed along the circumferential direction and which project from or are recessed into the bearing surface (24) of the axial bearing (3) in the axial direction, and a run-on collar (12, 13) which is rotationally conjointly connected to the shaft (10), wherein the run-on collar (12, 13) comprises an annular load-bearing surface (15) for support on the segments (25) of the axial bearing, wherein the segments (25) are delimited, with respect to the direction of rotation of the rotating shaft (10) and run-on collar (12, 13), by in each case one first edge (36) and one second edge (37), wherein a segment length (35) is defined as an arc length between the first and second edges (36, 37) in the circumferential direction, wherein a radius (r) is defined perpendicular to the axial direction to the central point (34) of the shaft (10), and wherein each segment has a segment width (31) delimited by a radially inner edge and a radially outer edge, and wherein the segment length (35) relative to the radius increases with increasing radius (r) at a rate greater than the increase in radius over at least a portion of the segment width (31), and wherein the first edge (36) has at least two linear parts with different gradient.