Planetary gearing for a wind turbine having mounted planetary gears

• US 10,451,176 B2
• Filed: 09/15/2016
• Issued: 10/22/2019
• Est. Priority Date: 09/15/2015
• Status: Active Grant

• Current Assignee: Miba Gleitlager Austria GmbH
• Original Assignee: Miba Gleitlager Austria GmbH
• Inventors: Hoelzl, Johannes Sebastian
• Primary Examiner(s): Lewis, Tisha D
• Application Number:
  US15/758,767
• Publication Number:
  US 20180299006A1
• Time in Patent Office: 1,132 Days
• CPC Class Codes: F16C 17/10 for both radial and axial load
• CPC Class Codes: F16C 17/26 Systems consisting of a plurality of sliding-contact bearings
• CPC Class Codes: F16C 2226/50 Positive connections
• CPC Class Codes: F16C 2226/52 with plastic deformation, e.g. caulking or staking
• CPC Class Codes: F16C 2360/31 Wind motors in general F03D
• CPC Class Codes: F16C 33/08 Attachment of brasses, bushes or linings to the bearing housing
• CPC Class Codes: F16C 33/1055 from radial inside, e.g. via a passage through the shaft and/or inner sleeve
• CPC Class Codes: F16C 35/02 in the case of sliding-contact bearings
• CPC Class Codes: F16C 43/02 Assembling sliding-contact bearings
• CPC Class Codes: F16H 2057/085 Bearings for orbital gears
• CPC Class Codes: F16H 57/082 Planet carriers
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction

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.

Claims

1. A planetary gearing for a wind turbine, comprising:

a sun gear,

a hollow gear,

a planetary carrier with a first bolt receiving element which comprises at least one first bolt seat,

at least one planetary gear bolt which is mounted in the first bolt seat in a rotationally secure manner,

at least one planetary gear, which is mounted on the planetary gear bolt in a rotationally secure manner by a bearing assembly relative to the planetary gear bolt, wherein the planetary gear is in engagement both with the sun gear and with the hollow gear,

wherein the bearing assembly comprises a first planetary gear receiving bushing and a second planetary gear receiving bushing, which planetary gear receiving bushings are coupled to the planetary gear in a rotationally secure manner and between which planetary gear receiving bushings an axial bearing gap is formed and the bearing assembly comprises at least one bearing running sleeve, which is mounted on the planetary gear bolt in a rotationally secure manner and on which an axial positioning flange is formed, which is mounted in the axial bearing gap between the planetary gear receiving bushings and in this way an axial position fixing, in particular an axial bearing, of the planetary gear on the planetary gear bolt is carried out.

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

3. The planetary gearing as claimed in claim 1, wherein the bearing assembly comprises a first axial sliding bearing disc which is arranged between the first planetary gear receiving bushing and axial positioning flange of the bearing running sleeve and the bearing assembly comprises a second axial sliding bearing disc which is arranged between the second planetary gear receiving bushing and axial positioning flange of the bearing running sleeve.

4. The planetary gearing as claimed in claim 3, wherein the first axial sliding bearing disc is secured by a fastener onto the first planetary gear receiving bushing and the second axial sliding bearing disc is secured by the fastener onto the second planetary gear receiving bushing.

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

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

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

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