Planetary gear train for a wind turbine

Patent metadata

Field	Value
Publication number	US-10288164-B2
Application number	US-201515518552-A
Country	US
Kind code	B2
Filing date	Oct 14, 2015
Priority date	Oct 16, 2014
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

The invention relates to a planetary gear train (1) for a wind turbine, comprising: a sun gear; an annular gear (13); a planet carrier (9) with multiple bearing seats (12); multiple planetary gear axles (8); multiple radial sliding bearings (23) for mounting the planet gear axles (8) in the planet carrier (9); multiple planet gears (5) which are each mounted in the planet carrier (9) by means of the planet gear axles (8). The planet carrier (9) has a parting plane (17) in the region of each of the bearing seats (12), wherein a first half shell (18) of one of the bearing seats (12) is formed by the planet carrier (9) and a second half shell (19) of one of the bearing seats (12) is formed in each case by a bearing cap (20).

First claim

The invention claimed is:

1. A planetary gear train ( 1 ) for a wind turbine, comprising:
a sun gear ( 3 ),
an annular gear ( 13 ),
a planetary carrier ( 9 ) with a first bearing accommodating section ( 10 ) and a second bearing accommodating section ( 11 ),
a plurality of bearing seats ( 12 ),
a plurality of planetary gear axles ( 8 ),
a plurality of radial sliding bearings ( 23 ) for supporting the planetary gear axle ( 8 ) in the planetary carrier ( 9 ), wherein each of the planetary gear axles ( 8 ) are mounted respectively in one of the bearing seats ( 12 ) of the first bearing accommodating section ( 10 ) and in one of the bearing seats ( 12 ) of the second bearing accommodating section ( 11 ), and
a plurality of planetary gears ( 5 ), which are mounted respectively by the planetary gear axles ( 8 ) in the planetary carrier ( 9 ), wherein the planetary gears ( 5 ) are in engagement both with the sun gear ( 3 ) and also with the annular gear ( 13 ),
wherein the planetary carrier ( 9 ) has a parting plane ( 17 ) in the region of the bearing seats ( 12 ), wherein a first half shell ( 18 ) of one of the bearing seats ( 12 ) is formed by the planetary carrier ( 9 ) and a second half shell ( 19 ) of one of the bearing seats ( 12 ) is formed by a bearing cap ( 20 ) respectively and
wherein one of the radial sliding bearings ( 23 ) is designed as a bearing bush ( 24 ), wherein the bearing bush ( 24 ) is mounted securely in one of the bearing seats ( 12 ), and wherein an inner casing surface ( 26 ) of the bearing bush ( 24 ) is designed for receiving a relative movement between the bearing bush ( 24 ) and one of the planetary gear axles ( 8 ), the bearing bush ( 24 ) being mounted in the bearing seat ( 12 ) by a clamping, the clamping being produced by the bearing cap ( 20 ) which forms the bearing seat ( 12 ) together with the planetary carrier ( 9 ).

2. The planetary gear train as claimed in claim 1 , wherein one of the bearing caps ( 20 ) is designed such that it extends over one of the bearing seats ( 12 ) of the first bearing accommodating section ( 10 ) and the respectively associated bearing seat ( 12 ) of the second bearing accommodating section ( 11 ).

3. The planetary gear train as claimed in claim 1 , wherein one of the bearing caps ( 20 ) has a recess ( 22 ), through which one of the planetary gears ( 5 ) penetrates at least partly.

4. The planetary gear train as claimed in claim 1 , wherein one of the radial sliding bearings ( 23 ) is designed as a divided sliding bearing half shell ( 28 ).

5. The planetary gear train as claimed in claim 1 , wherein one of the planetary gear axles ( 8 ) is designed in one piece with one of the planetary gears ( 5 ).

6. The planetary gear train as claimed in claim 1 , wherein one of the bearing caps ( 20 ) is connected by a plurality of connecting elements ( 21 ) to a main body of the planetary carrier ( 9 ).

7. The planetary gear train as claimed in claim 1 , wherein an axial sliding bearing ( 29 ) is arranged respectively between the end faces ( 30 ) of one of the planetary gears ( 5 ) and the planetary carrier ( 9 ).

8. A wind turbine comprising a rotor and a generator, wherein between the rotor and the generator a planetary gear train ( 1 ) is arranged which is in operative connection with the rotor and the generator, wherein the planetary gear train ( 1 ) is designed as claimed in claim 1 .

Assignees

• Miba Gleitlager Austria Gmbh

Inventors

• Hoelzl Johannes Sebastian

Classifications

• F05B2260/40311

  of the epicyclic, planetary or differential type · CPC title

• F16H57/082 Primary

  Planet carriers · CPC title

• F16C2360/31

  Wind motors · CPC title

• F16C35/00

  Rigid support of bearing units; Housings, e.g. caps, covers (F16C23/00 takes precedence) · CPC title

• F16H2057/085

  Bearings for orbital gears · CPC title