Device with a torque-proof first structural component and a second structural component that is connected at least in certain parts in a rotatable manner to the first structural component

Patent metadata

Field	Value
Publication number	US-2016160993-A1
Application number	US-201514958363-A
Country	US
Kind code	A1
Filing date	Dec 3, 2015
Priority date	Dec 4, 2014
Publication date	Jun 9, 2016
Grant date	—

Abstract

A device with a torque-proof first structural component and a second structural component that is connected at least in certain areas in a rotatable manner to the first structural component, wherein hydraulic fluid can be guided to lubrication points via the first structural component and the second structural component. The second structural component is embodied with blade areas which are extending substantially at a defined angle in the radial direction inside the second structural component and between which transmission areas for hydraulic fluid of the second structural component are provided, with their flow cross sections decreasing in the transmission areas in the flow direction of the hydraulic fluid.

First claim

1 . A device with a torque-proof first structural component and a second structural component that is connected at least in certain areas in a rotatable manner to the first structural component, wherein hydraulic fluid can be guided to lubrication points via the first structural component and the second structural component ( 28 ), wherein the second structural component is embodied with blade areas which extend in the radial direction inside the second structural component substantially at a defined angle and between which transmission areas for hydraulic fluid of the second structural component are provided which have flow cross sections that decrease in the flow direction of the hydraulic fluid in the transmission areas.

2 . The device according to claim 1 , wherein the hydraulic fluid can be guided in the radial direction through the transmission areas against the rotational direction of the second structural component.

3 . The device according to claim 1 , wherein an interface between the structural components is sealed against an environment of the structural components through a sealing device, and in that the interface comprises the transition area that is limited by the areas of the structural components which are overlapping in the radial direction and which carry hydraulic fluid during operation, with the transition area being connected to supply areas for hydraulic fluid of the first structural component as well as to the transmission areas of the second structural component.

4 . The device according to claim 3 , wherein the interface forms an area of an at least floating hydrodynamic bearing that is carrying hydraulic fluid between the structural components.

5 . The device according to claim 3 , wherein the sealing device is embodied with at least one thread area in the area of a surface of the first structural component or of the second structural component that is facing the surface of the second structural component or of the first structural component, respectively.

6 . The device according to claim 5 , wherein at least one area of the first structural component and/or of the second structural component that is close to a thread area, a recirculation area is provided that leads into the area of the interface and that connects the interface to an area of the thread area that is facing away from the interface.

7 . The device according to claim 6 , wherein the recirculation area is embodied as a channel or a bore in the first structural component and/or in the second structural component.

8 . The device according to claim 5 , wherein the pitch and the height of a turn of the thread of the thread area increase with growing distance from the interface.

9 . The device according to claim 5 , wherein the transition area of the interface is arranged in the axial extension of the structural components between at least two thread areas of the sealing device.

10 . The device according to claim 5 , wherein the thread area comprises a multi-start thread.

11 . The device according to claim 3 , wherein the area of the first structural component that limits the transition area of the interface is arranged inside the area of the second structural component that forms part of the limit of the transition area of the interface, or in that the area of the second structural component is arranged inside the area of the first structural component.

12 . The device according to claim 1 , wherein the first structural component is supported via bolt elements in slotted holes to avoid twisting.

13 . The device according to claim 3 , wherein the hydraulic fluid can be guided via the first structural component and the interface radially from the inside to the outside or from the outside to the inside into the second structural component.

14 . The device according to claim 3 , wherein multiple oil supply areas are provided that are arranged in a symmetrically distributed manner over the circumference of the first structural component.

15 . The device according to claim 3 , wherein a further sealing device, preferably one that is comprising a seal ring, is provided on the side of the thread area that is facing away from the interface.

Assignees

• Rolls Royce Deutschland

Inventors

• Venter Gideon

Classifications

• F16H57/029

  characterised by means for sealing the gearboxes, e.g. to improve airtightness · CPC title

• F16H57/0424 Primary

  Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes · CPC title

• F16H57/025

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

• F04D1/02 Primary

  having non-centrifugal stages, e.g. centripetal · CPC title

• F05D2260/40311

  of the epicyclical, planetary or differential type · CPC title