Tilting segment and tilting segment sliding bearing

Abstract

A tilting segment (3, 3) for a tilting segment sliding bearing (1, 1) has a segment body (13, 13) for receiving bearing forces. The segment body (13, 13) is made of a fiber-reinforced composite material. The composite material includes a polyether ketone and carbon fibers that function as reinforcement fibers. The carbon fibers make up 25 wt. % to 70 wt. % of the fiber-reinforced composite material. Additionally, the carbon fibers form a fabric. The fabric has a contour that has an orientation that is parallel to a sliding surface (8, 18) of the segment body (13, 13).

Claims

1. A tilting segment (3, 3) for a tilting segment sliding bearing (1, 1) comprising: a segment body (13, 13) for receiving bearing forces, the segment body (13, 13) being made of a fiber-reinforced composite material; the composite material comprises a polyether ketone, the composite material has carbon fibers as reinforcing fibers of the composite material, the carbon fibers comprise 25 wt. % to 70 wt. % of the composite material, and the carbon fibers form a fabric, the fabric has a contour that has an orientation that is parallel to a sliding surface (8, 18) of the segment body (13, 13).

2. The tilting segment according to claim 1, wherein: the carbon fibers comprise 40 wt. % to 60 wt. % of the composite material.

3. The tilting segment according to claim 2, wherein: the carbon fibers comprise 45 wt. % to 55 wt. % of the composite material.

4. The tilting segment according to claim 3, wherein: the carbon fibers comprise 50 wt. % of the composite material.

5. The tilting segment according to claim 1, wherein: the polyether ether ketone is polyacryletherketone.

6. The tilting segment according to claim 1, wherein: the segment body (13, 13) is formed by compression.

7. A tilting segment sliding bearing (1, 1) having a plurality of tilting segments (3, 3) of claim 1 arranged on a supporting ring (2, 2).

8. The tilting segment sliding bearing according to claim 7, wherein: the tilting segments (3) are configured as radial tilting segments (6) of a radial bearing (4) and each has a concave sliding surface (8).

9. The tilting segment sliding bearing according to claim 7, wherein: the tilting segments (3) are configured as axial tilting segments (16) of an axial bearing (14) and each has a flat sliding surface (18).

10. The tilting segment sliding bearing according to claim 7, wherein: a rotating shaft (10) or shaft collar (10) faces the sliding surface (8, 18) and has a running surface (9, 9) with a hard protective coating.

11. The tilting segment sliding bearing according to claim 10, wherein: the protective coating is made of a tungsten carbide and at least one of cobalt and chromium.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) FIG. 1 is a front view in half-section of the tilting segment sliding bearing that is formed as a radial sliding bearing.

(2) FIG. 2 is a side view of the tilting segment sliding bearing of FIG. 1 cut along the line II-II with the shaft indicated by broken lines.

(3) FIG. 3 is an enlarged perspective view of the tilting segment of FIG. 1 that is formed as a radial tilting segment.

(4) FIG. 4 is a front view of the tilting segment of FIG. 3 from the direction indicated by the arrow IV.

(5) FIG. 5 is a side view of the tilting segment of FIG. 4 cut along the line V-V.

(6) FIG. 6 is a front view of a tilting segment sliding bearing that is formed as an axial sliding bearing.

(7) FIG. 7 is a front view in enlarged representation of the tilting segment of FIG. 6 that is formed as an axial tilting segment.

(8) FIG. 8 is a side view of the tilting segment of FIG. 7 from the direction indicated by the arrow VIII.

(9) FIG. 9 is a rear view of the tilting segment of FIG. 8 from the direction indicated by the arrow IX.

(10) FIG. 10 is a side view of the tilting segment of FIG. 9 from the direction indicated by the arrow X.

(11) FIG. 11 is a side view of the tilting segment sliding bearing of FIG. 6 from the direction indicated by the arrow XI and having a shaft collar represented by broken lines.

DETAILED DESCRIPTION

(12) A tilting segment sliding bearing 1 is essentially made up of a supporting ring 2 and a plurality of tilting segments 3.

(13) The tilting segment sliding bearing 1 is formed as a radial bearing 4 whose supporting ring 2 has a plurality (in the example, five) of tilting segments 3 on its inner surface 5. Accordingly, the tilting segments 3 are formed as radial tilting segments 6. The radial tilting segments 6 have an outer surface 7 facing the inner surface 5 of the supporting ring 2, wherein the radius of the outer surface 7 of the radial tilting segment 6 is smaller than the radius of the inner surface 5 of the supporting ring 2. The radial tilting segment 6 has a sliding surface 8 on the inner side facing away from the outer surface 7. The sliding surfaces 8 of the radial tilting segments 6 are in contact with the running surface 9 of a rotating shaft 10.

(14) The radial tilting segment 6 has an element 11 by which it is attached via a screw 12 to the supporting ring 2. The element 11 provides the radial tilting segment 6 with the possibility of tilting.

(15) The running surface 9 of the rotating shaft 10 is provided with a protective coating (not depicted in further detail) based on tungsten carbide (WC) with portions of cobalt (Co) and/or chromium (Cr).

(16) The exemplary embodiment of FIG. 6 is made up of a tilting segment sliding bearing 1, a supporting ring 2 and a plurality (in the example, eight) of tilting segments 3. The tilting segment sliding bearing 1 is formed as an axial bearing 14, wherein the supporting ring 2 has an annular rear wall against which rest the tilting segments 3 that are formed as axial tilting segments 16 having a rib 17. The axial tilting segment 16 has on its front side, which faces away from rib 17, a flat sliding surface 18 that rests against a flat running surface 9 of a rotating shaft collar 10. The axial tilting segments 16 have lateral grooves 19 in which the locking elements 20 arranged on the rear wall 15which forms a support for the axial tilting segments 16engage.

(17) The running surface 9 of the rotating shaft collar 10 is provided with a protective coating (not depicted) based on tungsten carbide (WC) with portions of cobalt (Co) and/or chromium (Cr).

(18) The tilting segment 3, without the element 11 and the screw 12, forms the segment body 13. The tilting segment 3, without the rib 17 of the axial tilting segment 16, forms the segment body 13.

(19) The segment bodies 13, 13 are made of a composite material that comprises polyether ether ketone in addition to carbon fibers. The carbon fibers have a weight proportion of 50% of the composite material. The carbon fibers form a fabric that has a contour-parallel orientation with respect to the sliding surface 8, 18 of the segment body 13, 13.

(20) Of course, the embodiments discussed in the specific description and shown in the figures are merely illustrative exemplary embodiments of the present invention. In light of this disclosure, a person skilled in the art is given a wide range of possible variations.

LIST OF REFERENCE NUMBERS

(21) 1, 1 Tilting segment sliding bearing 2, 2 Supporting ring 3, 3 Tilting segment 4 Radial bearing 5 Inner surface of 2 6 Radial tilting segment 7 Outer surface of 6 8 Sliding surface of 6 9 Running surface of 10 9 Running surface of 10 10 Shaft 10 Shaft collar 11 Element of 6 12 Screw 13, 13 Segment body 14 Axial bearing of 1 15 Rear wall of 14 16 Axial tilting segment 17 Rib of 16 18 Sliding surface of 16 19 Groove of 16 20 Locking element