Gearing device

Patent metadata

Field	Value
Publication number	US-2018306293-A1
Application number	US-201815950856-A
Country	US
Kind code	A1
Filing date	Apr 11, 2018
Priority date	Apr 19, 2017
Publication date	Oct 25, 2018
Grant date	—

Abstract

A gear device with at least one rotating structural component, with a further structural component that delimits at least one supply area and with at least one consumption point that is to be supplied with hydraulic fluid via the supply area. Hydraulic fluid from at least one hydraulic fluid supply device can be introduced into the at least supply area via at least one supply opening, and can be discharged via at least one outlet opening from the at least one supply area for supplying the at least one consumption point. Inside the supply area, at least one pumping appliance driven by the structural component is provided for transporting hydraulic fluid from the at least one supply opening in the direction of the at least one outlet opening.

First claim

1 . A gear device with at least one rotating structural component, with a further structural component that delimits at least one supply area and with at least one consumption point that is to be supplied with hydraulic fluid via the supply area, wherein hydraulic fluid from at least one hydraulic fluid supply device can be introduced into the at least one supply area via at least one supply opening, and can be discharged via at least one outlet opening from the at least one supply area for supplying the at least one consumption point, wherein at least one pumping appliance that can be driven by the structural component is provided inside the supply area for transporting hydraulic fluid from the at least one supply opening in the direction of the at least one outlet opening.

2 . The gear device according to claim 1 , wherein the at least one pumping appliance is embodied as a flow pump or as a positive displacement pump.

3 . The gear device according to claim 1 , wherein multiple pumping appliances are arranged in the supply area behind each other in the flow direction of the supplied hydraulic fluid.

4 . The gear device according to claim 1 , wherein at least one pumping appliance is connected to the structural component in a torque-proof manner.

5 . The gear device according to claim 1 , wherein the pumping appliance is embodied with an impeller that is connected in a torque-proof manner to the structural component.

6 . The gear device according to claim 1 , wherein the pumping appliance is connected to the structural component of the gear device by means of a splined connection, and is mounted by means of a bearing appliance with respect to a further rotatable structural component of the gear device.

7 . The gear device according to claim 1 , wherein a pressure recovery appliance is arranged downstream of the pumping appliance.

8 . The gear device according to claim 7 , wherein the pressure recovery appliance has a further impeller that is connected to the further structural component in a torque-proof manner and contains the impeller.

9 . The gear device according to claim 5 , wherein the impeller and/or the further impeller is or are embodied with blades that are straight or bent in the axial direction and/or in the radial direction and/or in the circumferential direction.

10 . The gear device according to claim 7 , wherein the pressure recovery appliance is guided through a supply area that is arranged radially outside of the impeller or of the further impeller, and that extends in the circumferential direction of the structural component or of the further structural component at least in certain areas, and that has a flow cross-section that increases in the direction of the at least one outlet opening.

11 . The gear device according to claim 1 , wherein the structural component is a sun wheel or a planetary wheel.

12 . The gear device according to claim 1 , wherein the further structural component is a planetary carrier.

13 . The gear device according to claim 1 , wherein the at least one hydraulic fluid supply device is embodied as a hydraulic fluid nozzle.

14 . The gear device according to claim 1 , wherein at least one seal device is provided for sealing the further structural component against an environment.

15 . The gear device according to claim 14 , wherein the at least one seal device opens a gap between an internal space of the further structural component and the environment during operation due to the acting centrifugal force.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Uhkoetter Stephan

Classifications

• F01D25/183

  Sealing means · CPC title

• F16N7/363 Primary

  Centrifugal lubrication · CPC title

• F05D2220/323

  for aircraft propulsion, e.g. jet engines · CPC title

• F05D2260/40311

  of the epicyclical, planetary or differential type · CPC title

• F16H55/08

  Profiling · CPC title