Insulated pitch tube

Patent metadata

Field	Value
Publication number	US-12123405-B2
Application number	US-202017641109-A
Country	US
Kind code	B2
Filing date	Aug 17, 2020
Priority date	Sep 20, 2019
Publication date	Oct 22, 2024
Grant date	Oct 22, 2024

Abstract

An arrangement including a transmission, a feedthrough tube, and a fixing means is disclosed. A fixing means is disclosed whereby the feedthrough tube is fixed in the transmission. The fixing means includes an electrical non-conductor. Arrangements are disclosed in which the feedthrough tube is fixed axially and immovably in the fixing means.

First claim

The invention claimed is:

1. An arrangement comprising:
a transmission;
a feedthrough tube; and
a fixing means, wherein:
the feedthrough tube is fixed in the transmission by the fixing means, and
the fixing means is an electrical non-conductor unitary body having a radial thickness and an axial length, the radial thickness being greater than the axial length.

2. The arrangement according to claim 1 , wherein the feedthrough tube is fixed axially immovably in the fixing means.

3. The arrangement according to claim 1 , wherein the feedthrough tube is fixed by means of the fixing means in a shaft or a rotatably mounted planetary carrier of the transmission.

4. The arrangement according to claim 1 , wherein the fixing means has a central, continuous hole and wherein the fixing means is joined to the feedthrough tube in the hole.

5. The arrangement according to claim 3 , wherein the fixing means is joined along its radially outer edge to the shaft or the planetary carrier.

6. The arrangement according to claim 1 , wherein the fixing means has a basic shape of a radially oriented disk.

7. The arrangement according to claim 1 , further comprising a seal axially spaced apart from the fixing means, wherein:
the feedthrough tube is sealed in a fluid-tight manner with respect to a housing of the transmission by means of the seal, and
the feedthrough tube is axially displaceable in relation to the seal.

8. The arrangement according to claim 4 , wherein the fixing means is joined along its radially inner edge to the feedthrough tube.

9. The arrangement according to claim 1 , wherein the fixing means includes a lug arranged at an axial end and configured to protrude radially into the feedthrough tube.

10. The arrangement according to claim 1 , wherein the fixing means includes a first groove and the feedthrough tube includes a corresponding second groove, and wherein a locking ring is arranged within the first groove and the second groove.

Assignees

• Zahnradfabrik Friedrichshafen
• Zf Wind Power Antwerpen Nv
• Vestas Wind Sys As

Inventors

• De Laet Wim
• Rottiers Stijn

Classifications

• F05B2260/40311

  of the epicyclic, planetary or differential type · CPC title

• F05B2260/30

  Retaining components in desired mutual position · CPC title

• F03D15/00

  Transmission of mechanical power · CPC title

• Y02E10/72

  Wind turbines with rotation axis in wind direction · CPC title

• H02G3/22

  Installations of cables or lines through walls, floors or ceilings, e.g. into buildings · CPC title