Tapered roller bearing and wind turbine

Patent metadata

Field	Value
Publication number	US-2020063799-A1
Application number	US-201816498561-A
Country	US
Kind code	A1
Filing date	Apr 6, 2018
Priority date	Apr 7, 2017
Publication date	Feb 27, 2020
Grant date	—

Abstract

A tapered roller bearing may comprise an inner ring, an outer ring, and two rows of tapered rollers that are arranged in an O-arrangement between the inner ring and the outer ring. The inner ring may extend in an axial direction over a greater length than the outer ring, and a gap between the inner ring and the outer ring on at least one side of the tapered roller bearing may be sealed by a sealing assembly. The sealing assembly may comprise a main seal that is attached to the inner ring in a rotationally fixed manner, as well as a seal race ring that is attached to the outer ring in a rotationally fixed manner. The seal race ring may form a seal raceway for the main seal.

First claim

1 .- 13 . (canceled)

14 . A tapered roller bearing comprising:
an inner ring; an outer ring, wherein the inner ring extends in an axial direction over a greater length than the outer ring; two rows of tapered rollers that are arranged in an O-arrangement between the inner ring and the outer ring; and a sealing assembly that seals a gap between the inner ring and the outer ring on at least one side, wherein the sealing assembly comprises:
a main seal that is attached to the inner ring in a rotationally-fixed manner, and
a seal race ring that is attached to the outer ring in a rotationally-fixed manner, wherein the seal race ring forms a seal raceway for the main seal.

15 . The tapered roller bearing of claim 14 wherein the main seal is inserted into a groove on a front side of the inner ring.

16 . The tapered roller bearing of claim 14 wherein the main seal is held on an associated front side of the inner ring by a clamping ring or clamping segments distributed around a circumference.

17 . The tapered roller bearing of claim 14 wherein the seal race ring is screwed to the outer ring.

18 . The tapered roller bearing of claim 14 comprising a labyrinth formed by moldings, which are complementary to one another, on the inner ring and on the seal race ring.

19 . The tapered roller bearing of claim 14 wherein the sealing assembly comprises a secondary seal that is separate from the main seal.

20 . The tapered roller bearing of claim 19 comprising a joint clamping connection that holds the main seal and the secondary seal.

21 . The tapered roller bearing of claim 14 wherein the main seal is comprised of elastic plastic, wherein the main seal comprises a sealing foot and a sealing leg that adjoins the sealing foot, wherein the sealing leg lies against the seal raceway.

22 . The tapered roller bearing of claim 21 wherein the sealing leg is supported by a spring.

23 . The tapered roller bearing of claim 14 wherein the seal raceway is hardened.

24 . The tapered roller bearing of claim 14 wherein the seal raceway is provided with a coating.

25 . The tapered roller bearing of claim 14 wherein the main seal is mounted with a spacer ring.

26 . A wind turbine comprising:
a machine housing disposed on a tower; and a rotor supporting rotor blades, wherein the rotor is rotationally supported with respect to the machine housing by way of a tapered roller bearing, wherein the tapered roller bearing comprises:
an inner ring;
an outer ring, wherein the inner ring extends in an axial direction over a greater length than the outer ring;
two rows of tapered rollers that are arranged in an O-arrangement between the inner ring and the outer ring; and
a sealing assembly that seals a gap between the inner ring and the outer ring on at least one side, wherein the sealing assembly comprises:
a main seal that is attached to the inner ring in a rotationally-fixed manner, and
a seal race ring that is attached to the outer ring in a rotationally-fixed manner, wherein the seal race ring forms a seal raceway for the main seal.

27 . The wind turbine of claim 26 wherein the main seal is inserted into a groove on a front side of the inner ring.

28 . The wind turbine of claim 26 wherein the main seal is held on an associated front side of the inner ring by a clamping ring or clamping segments distributed around a circumference.

29 . The wind turbine of claim 26 wherein the seal race ring is screwed to the outer ring.

30 . The wind turbine of claim 26 comprising a labyrinth formed by moldings, which are complementary to one another, on the inner ring and on the seal race ring.

31 . The wind turbine of claim 26 wherein the sealing assembly comprises a secondary seal that is separate from the main seal.

32 . The wind turbine of claim 31 comprising a joint clamping connection that holds the main seal and the secondary seal.

33 . The wind turbine of claim 26 wherein the main seal is comprised of elastic plastic, wherein the main seal comprises a sealing foot and a sealing leg that adjoins the sealing foot, wherein the sealing leg lies against the seal raceway.

Assignees

• Thyssenkrupp Rothe Erde Gmbh
• Thyssenkrupp Ag

Inventors

• Pilk Bernfried
• Santoro Simone Angelo

Classifications

• F16C2360/31

  Wind motors · CPC title

• F05B2240/50

  Bearings · CPC title

• F16C33/7889

  mounted to an inner race and extending toward the outer race · CPC title

• F16C33/7813 Primary

  for tapered roller bearings · CPC title

• F16C19/386 Primary

  in O-arrangement · CPC title