Bell housing for a wind turbine gear mechanism

Patent metadata

Field	Value
Publication number	US-10851765-B2
Application number	US-201716315181-A
Country	US
Kind code	B2
Filing date	Jun 26, 2017
Priority date	Jul 7, 2016
Publication date	Dec 1, 2020
Grant date	Dec 1, 2020

Abstract

A bell housing includes a first region configured to be secured in a nacelle of a wind turbine, a second region configured to receive a gear mechanism, and a wall connecting the first region and the second region together. The wall is provided with at least two recesses.

First claim

The invention claimed is:

1. A gear assembly for a wind turbine, comprising:
a gear mechanism, comprising at least one planetary stage with planet gears; and
a bell housing, comprising:
a first region configured to be secured in a nacelle of a wind turbine,
a second region configured to receive the gear mechanism, and
a wall connecting the first region and the second region together, wherein the wall is provided with at least two recesses,

wherein a number of the at least two recesses of the bell housing is not integer divisible by a number of the planet gears.

2. The gear assembly according to claim 1 , wherein the bell housing has a rotationally symmetrical basic shape.

3. The gear assembly according to claim 1 , wherein the recesses are arranged such that at least one cross-sectional plane intersects the recesses.

4. The gear assembly according to claim 1 , wherein each of the two recesses can be mapped onto each other by rotation.

5. The gear assembly according to claim 1 , wherein the recesses are radially aligned.

6. The gear assembly according to claim 1 , wherein the recesses are continuous.

7. The gear assembly according to claim 1 , wherein the wall has a uniform strength.

8. The gear assembly according to claim 1 , wherein the recesses are diamond-shaped.

9. The gear assembly according to claim 1 , further comprising a drive shaft, wherein the drive shaft extends through the bell housing.

10. The gear assembly according to claim 9 , wherein the drive shaft is connected in a torque-proof manner to a sun gear, ring gear, or planet carrier of the at least one planetary stage.

11. The gear assembly according to claim 1 , wherein the bell housing includes a flange, and wherein the flange of the bell housing is screwed to a housing of the gear mechanism.

Assignees

• Zahnradfabrik Friedrichshafen

Inventors

• Stoyanov Deyan
• Fischer Steffen

Classifications

• B65H23/24

  by fluid action, e.g. to retard the running web · CPC title

• F16H1/28

  with gears having orbital motion · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• F16H2057/02078

  for wind turbines · CPC title

• F16H57/025

  Support of gearboxes, e.g. torque arms, or attachment to other devices · CPC title