A thrust bearing assembly comprising a bearing runner and a bearing carrier, the carrier defining thrust pad sites annularly around the carrier, with a thrust pad disposed at a site and with the carrier limiting movement of the thrust pad in a direction generally radial to the longitudinal axis of t
A thrust bearing assembly comprising a bearing runner and a bearing carrier, the carrier defining thrust pad sites annularly around the carrier, with a thrust pad disposed at a site and with the carrier limiting movement of the thrust pad in a direction generally radial to the longitudinal axis of the runner while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis. The pads can tilt under load to form a hydrodynamic wedge. A runner may have a wear resistant face. In one implementation, at each site, a deflection element (e.g., Belleville washer) is at least partially disposed within a cavity and a pad is disposed over the deflection element. The wear resistant face contacts the pad. Another embodiment rigidly connects pads disposed on opposite sides of a stationary bearing carrier. Another embodiment attaches pads to a bearing carrier using pad holder assemblies.
대표청구항▼
1. A thrust bearing assembly comprising: a bearing runner having a wear resistant face;a bearing carrier defining a plurality of thrust pad sites disposed annularly around the bearing carrier, the bearing carrier having a first side facing the wear resistant face of the bearing runner and a second s
1. A thrust bearing assembly comprising: a bearing runner having a wear resistant face;a bearing carrier defining a plurality of thrust pad sites disposed annularly around the bearing carrier, the bearing carrier having a first side facing the wear resistant face of the bearing runner and a second side opposite to the first side, and the bearing runner and the bearing carrier defining a longitudinal axis;a thrust pad disposed on the first side of the bearing carrier at a thrust pad site of the plurality of thrust pad sites, the thrust pad contacting the wear resistant face of the bearing runner; anda deflection element disposed between the thrust pad and the first side of the bearing carrier,wherein during operation the bearing carrier limits movement of the thrust pad in a direction generally radial to the longitudinal axis while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis such that the thrust pad compresses and releases the deflection element. 2. The thrust bearing assembly of claim 1, wherein the bearing carrier defines at least one annular cavity, and wherein the deflection element is disposed in the at least one annular cavity. 3. The thrust bearing assembly of claim 1, wherein, at the thrust pad site of the plurality of thrust pad sites, the bearing carrier defines an opening in which a pad holder assembly is disposed, and wherein the thrust pad is disposed in the pad holder assembly. 4. The thrust bearing assembly of claim 3, wherein the pad holder assembly comprises a pad holder and a fastener, wherein the fastener is disposed through the opening and connected to the pad holder, and wherein the fastener retains the pad holder to the bearing carrier. 5. The thrust bearing assembly of claim 3, wherein the bearing carrier comprises two opposing walls and a bottom surface that define a single annular cavity, and wherein the pad holder assembly is disposed within the single annular cavity. 6. The thrust bearing assembly of claim 1, wherein the bearing carrier comprises two opposing walls and a bottom surface that define a single annular cavity in which the thrust pad is disposed, wherein each thrust pad site of the plurality of thrust pad sites comprises a thrust pad, and wherein the thrust pads are contiguous to form an annular pad around the bearing carrier. 7. The thrust bearing assembly of claim 1, wherein each thrust pad site of the plurality of thrust pad sites comprises an opening through the bearing carrier and a pad holder assembly disposed through the opening, and wherein the thrust pad is disposed in the pad holder assembly. 8. The thrust bearing assembly of claim 1, wherein the bearing runner comprises a base structure, a wear resistant ring disposed over the base structure, and a deflection element disposed between the base structure and the wear resistant ring, wherein the wear resistant ring provides the wear resistant face. 9. The thrust bearing assembly of claim 1, wherein the bearing runner comprises a base structure, a plurality of wear pads disposed over the base structure, and one or more deflection elements disposed between the base structure and the plurality of wear pads, wherein the plurality of wear pads provides the wear resistant face. 10. The thrust bearing assembly of claim 1, wherein the thrust pad is disposed in a pad holder, wherein the pad holder is disposed in a cavity defined in the first side of the bearing carrier, wherein the cavity does not extend through to the second side of the bearing carrier, and wherein the bearing carrier further comprises one or more external deflection elements disposed on the second side that are independent of the pad holder. 11. A bearing carrier comprising: an annular base structure having a first side configured to contact a bearing runner and a second side opposite to the first side, the base structure defining a longitudinal axis;a plurality of thrust pad sites disposed annularly around the first side of the base structure;a thrust pad disposed on the first side of the base structure at a thrust pad site of the plurality of thrust pad sites, the thrust pad configured to contact the bearing runner; anda deflection element disposed between the thrust pad and the first side of the base structure,wherein during use the base structure limits movement of the thrust pad in a direction generally radial to the longitudinal axis while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis such that the thrust pad compresses and releases the deflection element. 12. The bearing carrier of claim 11, wherein the base structure defines at least one annular cavity, and wherein the deflection element is disposed in the at least one annular cavity. 13. The bearing carrier of claim 11, wherein, at the thrust pad site of the plurality of thrust pad sites, the base structure defines an opening in which a pad holder assembly is disposed, and wherein the thrust pad is disposed in the pad holder assembly. 14. The bearing carrier of claim 13, wherein the pad holder assembly comprises a pad holder and a fastener, wherein the fastener is disposed through the opening and connected to the pad holder, and wherein the fastener retains the pad holder to the base structure. 15. The bearing carrier of claim 14, wherein the fastener comprises a head that is larger than the opening and is disposed on the second side of the base structure. 16. The bearing carrier of claim 15, further comprising a second deflection element disposed between the head of the fastener and the second side of the base structure. 17. The bearing carrier of claim 13, wherein the opening is slot shaped. 18. The bearing carrier of claim 17, wherein the slot shaped opening extends in a direction radially from a center point of the bearing carrier. 19. The bearing carrier of claim 17, wherein the slot shaped opening extends along an arc of the bearing carrier. 20. The bearing carrier of claim 19, wherein the slot shaped opening has a linear shape. 21. The bearing carrier of claim 11, further comprising a second deflection element disposed between the thrust pad and the first side of the base structure. 22. The bearing carrier of claim 11, wherein the base structure comprises two opposing walls and a bottom surface that define a single annular cavity in which the thrust pad is disposed, and wherein each thrust pad site of the plurality of thrust pad sites comprises a thrust pad, and wherein the thrust pads are contiguous to form an annular pad around the bearing carrier. 23. The bearing carrier of claim 11, wherein each thrust pad site of the plurality of thrust pad sites comprises a cavity bored into the base structure. 24. The bearing carrier of claim 11, wherein each thrust pad site of the plurality of thrust pad sites comprises an opening through the base structure and a pad holder assembly disposed through the opening, and wherein the thrust pad is disposed in the pad holder assembly. 25. The bearing carrier of claim 24, wherein the first and second sides of the base structure are flat. 26. The bearing carrier of claim 24, wherein the each thrust pad site comprises a cavity, wherein a bottom surface of the cavity defines the opening, and wherein the pad holder assembly is disposed within the cavity. 27. The bearing carrier of claim 11, wherein each thrust pad site of the plurality of thrust pad sites comprises a thrust pad, and wherein a single deflection element is disposed annularly around the base structure between the thrust pads of the plurality of thrust pad sites and the first side of the base structure. 28. The bearing carrier of claim 11, wherein the bearing carrier further comprises one or more external deflection elements disposed on the second side. 29. The bearing carrier of claim 11, wherein the thrust pad is disposed in a pad holder, wherein the pad holder is disposed in a cavity defined in the first side of the base structure, wherein the cavity does not extend through to the second side of the base structure, and wherein the bearing carrier further comprises one or more external deflection elements disposed on the second side that are independent of the pad holder. 30. A thrust bearing assembly comprising: a bearing runner; anda bearing carrier in contact with the bearing runner, the bearing runner and the bearing carrier defining a longitudinal axis,wherein one of the bearing runner and the bearing carrier has a wear resistant face,wherein the other of the bearing runner and the bearing carrier defines a plurality of annularly disposed thrust pad sites, andwherein the other of the bearing runner and the bearing carrier comprises:a thrust pad disposed on a first side facing the wear resistant face of the one of the bearing runner and the bearing carrier, the thrust pad disposed at a thrust pad site of the plurality of thrust pad sites, the thrust pad contacting the wear resistant face, anda deflection element disposed between the thrust pad and the first side,wherein during operation the other of the bearing runner and the bearing carrier limits movement of the thrust pad in a direction generally radial to the longitudinal axis while allowing the thrust pad to move in a direction generally parallel to the longitudinal axis such that the thrust pad compresses and releases the deflection element.
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