Gearing device

Patent metadata

Field	Value
Publication number	US-10914366-B2
Application number	US-201815950856-A
Country	US
Kind code	B2
Filing date	Apr 11, 2018
Priority date	Apr 19, 2017
Publication date	Feb 9, 2021
Grant date	Feb 9, 2021

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

The invention claimed is:

1. A gear device, comprising:
a rotatable structural component,
a further structural component that delimits a supply area,
a consumption point that is to be supplied with hydraulic fluid via the supply area,
wherein hydraulic fluid from a hydraulic fluid supply device is introduced into the supply area via a supply opening, and is discharged via an outlet opening from the supply area for supplying the consumption point,
at least one pumping appliance driven by the structural component and positioned inside the supply area for transporting the hydraulic fluid from the supply opening in a direction of the outlet opening;
a spline connection connecting the at least one pumping appliance to the structural component, and a bearing appliance mounting the at least one pumping appliance with respect to a further rotatable structural component of the gear device.

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

3. The gear device according to claim 1 , wherein the at least one pumping appliance includes multiple pumping appliances arranged in the supply area behind each other in a flow direction of the hydraulic fluid.

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

6. The gear device according to claim 1 , and further comprising a pressure recovery appliance arranged downstream of the at least one pumping appliance.

7. The gear device according to claim 6 , wherein the pressure recovery appliance includes a further impeller that is connected to the further structural component in a torque-proof manner and contains the impeller.

8. The gear device according to claim 5 , wherein at least one chosen from the impeller and the further impeller includes blades that are straight or bent in at least one chosen from an axial direction, a radial direction and a circumferential direction.

9. 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 a 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 a direction of the outlet opening.

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

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

12. The gear device according to claim 1 , wherein the hydraulic fluid supply device is a hydraulic fluid nozzle.

13. The gear device according to claim 1 , and further comprising a seal device for sealing the further structural component against an environment.

14. The gear device according to claim 13 , wherein the seal device opens a gap between an internal space of the further structural component and the environment during operation due to an acting centrifugal force.

15. A gear device, comprising:
a rotatable structural component,
a further structural component that delimits a supply area,
a consumption point that is to be supplied with hydraulic fluid via the supply area,
wherein hydraulic fluid from a hydraulic fluid supply device is introduced into the supply area via a supply opening, and is discharged via an outlet opening from the supply area for supplying the consumption point,
at least one pumping appliance driven by the structural component and positioned inside the supply area for transporting the hydraulic fluid from the supply opening in a direction of the outlet opening;
wherein the at least one pumping appliance includes multiple pumping appliances arranged in the supply area behind each other in a flow direction of the hydraulic fluid.

16. A gear device, comprising:
a rotatable structural component,
a further structural component that delimits a supply area,
a consumption point that is to be supplied with hydraulic fluid via the supply area,
wherein hydraulic fluid from a hydraulic fluid supply device is introduced into the supply area via a supply opening, and is discharged via an outlet opening from the supply area for supplying the consumption point,
at least one pumping appliance driven by the structural component and positioned inside the supply area for transporting the hydraulic fluid from the supply opening in a direction of the outlet opening;
a pressure recovery appliance arranged downstream of the at least one pumping appliance;
wherein the pressure recovery appliance includes a further impeller that is connected to the further structural component in a torque-proof manner and contains the impeller.

17. The gear device according to claim 16 , 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 a 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 a direction of the outlet opening.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Uhkoetter Stephan

Classifications

• F16N7/363 Primary

  Centrifugal lubrication · CPC title

• F16H57/0482

  Gearings with gears having orbital motion · CPC title

• F16H57/0441

  Arrangements of pumps · CPC title

• F16H57/0427

  on rotary parts, e.g. using baffles for collecting lubricant by centrifugal force · CPC title

• F16N2210/02

  Turbines · CPC title