Planetary gearing for a wind turbine having mounted planetary gears

Patent metadata

Field	Value
Publication number	US-2018299006-A1
Application number	US-201615758767-A
Country	US
Kind code	A1
Filing date	Sep 15, 2016
Priority date	Sep 15, 2015
Publication date	Oct 18, 2018
Grant date	—

Abstract

The invention relates to a planetary gearing ( 1 ) for a wind turbine, comprising a sun gear ( 3 ), a hollow gear ( 17 ), a planetary carrier ( 9 ) with a first bolt receiving element ( 10 ) having at least one first bolt seat ( 12 ), at least one planetary gear bolt ( 8 ) and at least one planetary gear ( 5 ). The bearing assembly ( 19 ) has a first planetary gear receiving bushing ( 20 ) and a second planetary gear receiving bushing ( 21 ), which planetary gear receiving bushings ( 20, 21 ) are coupled to the planetary gear ( 5 ) in a rotationally fixed manner, and between which planetary gear receiving bushings ( 20, 21 ) an axial bearing gap ( 25 ) is formed. The bearing assembly ( 19 ) has at least one bearing running sleeve ( 28 ), which is accommodated on the planetary wheel bolt ( 8 ) in a rotationally fixed manner, and on which an axial positioning flange ( 29 ) is formed, which is accommodated in the axial bearing gap ( 25 ) between the planetary gear receiving bushings ( 20 ), and an axial position fixing, in particular an axial bearing, of the planetary gear ( 5 ) on the planetary gear bolt ( 8 ) is thereby carried out.

First claim

1 . A planetary gearing ( 1 ) for a wind turbine, comprising:
a sun gear ( 3 ), a hollow gear ( 17 ), a planetary carrier ( 9 ) with a first bolt receiving element ( 10 ) which comprises at least one first bolt seat ( 12 ), at least one planetary gear bolt ( 8 ) which is mounted in the first bolt seat ( 12 ) in a rotationally secure manner, at least one planetary gear ( 5 ), which is mounted on the planetary gear bolt ( 8 ) in a rotationally secure manner by means of a bearing assembly ( 19 ) relative to the planetary gear bolt ( 8 ), wherein the planetary gear ( 5 ) is in engagement both with the sun gear ( 3 ) and with the hollow gear ( 17 ), wherein the bearing assembly ( 19 ) comprises a first planetary gear receiving bushing ( 20 ) and a second planetary gear receiving bushing ( 21 ), which planetary gear receiving bushings ( 20 , 21 ) are coupled to the planetary gear ( 5 ) in a rotationally secure manner and between which planetary gear receiving bushings ( 20 , 21 ) an axial bearing gap ( 25 ) is formed and the bearing assembly ( 19 ) comprises at least one bearing running sleeve ( 28 ), which is mounted on the planetary gear bolt ( 8 ) in a rotationally secure manner and on which an axial positioning flange ( 29 ) is formed, which is mounted in the axial bearing gap ( 25 ) between the planetary gear receiving bushings ( 20 ) and in this way an axial position fixing, in particular an axial bearing, of the planetary gear ( 5 ) on the planetary gear bolt ( 8 ) is carried out.

2 . The planetary gearing as claimed in claim 1 , wherein the bearing assembly ( 19 ) also comprises a first radial sliding bearing bush ( 26 ) which is mounted in a rotationally secure manner in the first planetary gear receiving bushing ( 20 ) and comprises a second radial sliding bearing bush ( 27 ) which is mounted in a rotationally secure manner in the second planetary gear receiving bushing ( 21 ), wherein the first ( 26 ) and the second radial sliding bearing bush ( 27 ) have a sliding surface ( 30 ) for relative movement on a contact surface with the bearing running sleeve ( 28 ).

3 . The planetary gearing as claimed in claim 1 , wherein the bearing assembly ( 19 ) comprises a first axial sliding bearing disc ( 31 ) which is arranged between the first planetary gear receiving bushing ( 20 ) and axial positioning flange ( 29 ) of the bearing running sleeve ( 28 ) and the bearing assembly ( 19 ) comprises a second axial sliding bearing disc ( 32 ) which is arranged between the second planetary gear receiving bushing ( 21 ) and axial positioning flange ( 29 ) of the bearing running sleeve ( 28 ).

4 . The planetary gearing as claimed in claim 3 , wherein the first axial sliding bearing disc ( 31 ) is secured by fastening means ( 33 ) onto the first planetary gear receiving bushing ( 20 ) and the second axial sliding bearing disc ( 32 ) is secured by fastening means ( 33 ) onto the second planetary gear receiving bushing ( 21 ).

5 . The planetary gearing as claimed in claim 1 , wherein the planetary carrier ( 9 ) comprises a second bolt receiving element ( 11 ), on which at least one second bolt seat ( 13 ) is formed, wherein the planetary gear ( 5 ) is arranged on the planetary gear bolt ( 8 ) between the first bolt seat ( 12 ) and second bolt seat ( 13 ).

6 . The planetary gearing as claimed in claim 1 , wherein the bearing running sleeve ( 28 ) comprises a first bearing running sleeve part ( 34 ) and a second bearing running sleeve part ( 35 ), wherein on one of the two bearing running sleeve parts ( 34 , 35 ) the axial positioning flange ( 29 ) is formed on the end face and the two bearing running sleeve parts ( 34 , 35 ) are positioned relative to one another so that the axial positioning flange ( 29 ) is arranged in the interior between the two bearing running sleeve parts ( 34 , 35 ).

7 . The planetary gearing as claimed in claim 1 , wherein at least one of the planetary gear receiving bushings ( 20 , 21 ) comprises an end face graduation ( 24 ) which forms the axial bearing gap ( 25 ), wherein the two planetary gear receiving bushings ( 20 , 21 ) contact one another at their end faces.

8 . The planetary gearing as claimed claim 1 , wherein in the planetary gear bolt ( 8 ) at least one lubricant inlet ( 36 ) is formed, which is guided out of the planetary gear bolt ( 8 ) in the area of the bearing running sleeves ( 28 ) and also at least one lubricant outlet ( 37 ) is formed in the planetary gear bolt ( 8 ), which lubricant outlet opens in the area of the axial positioning flange ( 29 ) into the planetary gear bolt ( 8 ).

9 . A wind turbine with a planetary gearing ( 1 ), wherein the planetary gearing ( 1 ) is designed as claimed in claim 1 .

Assignees

• Miba Gleitlager Austria Gmbh

Inventors

• Hoelzl Johannes Sebastian

Classifications

• F16C2360/31

  Wind motors · CPC title

• F16C2226/50

  Positive connections · CPC title

• F16C17/10 Primary

  for both radial and axial load · CPC title

• F16C43/02

  Assembling sliding-contact bearings · CPC title

• F16H2057/085

  Bearings for orbital gears · CPC title