Gearbox assembly having a gear brake system
AssigneeGE Avio S.r.l.
InventorAndrea Piazza
Life of this patent
Estimating the term…
Abstract
A gearbox assembly including a gear assembly, an input shaft, an output shaft, and a gear brake system. The input shaft is coupled to the gear assembly. The output shaft is drivingly coupled to the input shaft through the gear assembly. The gear brake system is disposed within the gear assembly, and includes one or more brake devices. The gear brake system actuates the one or more brake devices to brake the gear assembly during a reverse torque condition of the gearbox assembly.
Claims20
A gearbox assembly comprising:
- a gear assembly comprising a first gear and a second gear that intermeshes with the first gear, the second gear including a gear pin about which the second gear rotates, the gear pin being deformable;
- an input shaft coupled to the gear assembly;
- an output shaft drivingly coupled to the input shaft through the gear assembly;
- and
- a gear brake system disposed within the gear assembly, the gear brake system comprising:
- a brake fluid reservoir disposed within the gear pin, the brake fluid reservoir storing brake fluid therein;
- and
- one or more brake devices to brake the gear assembly,
- wherein, during a reverse torque condition of the gearbox assembly, the gear pin deforms and the gear pin squeezes the brake fluid reservoir to force the brake fluid out of the brake fluid reservoir and the gear brake system supplies the brake fluid from the brake fluid reservoir to the one or more brake devices and actuates the one or more brake devices to brake the gear assembly.
A method of braking a gear assembly of a gearbox assembly, the gearbox assembly comprising a first gear and a second gear that intermeshes with the first gear, the second gear including a gear pin about which the second gear rotates, the gear pin being deformable, an input shaft, an output shaft drivingly coupled to the input shaft through the gear assembly, and a gear brake system disposed within the gear assembly and including one or more brake devices to brake the gear assembly and a brake fluid reservoir disposed in the gear pin to store brake fluid therein, the method comprising:
- deforming the gear pin during a reverse torque condition of the gearbox assembly such that the gear pin squeezes the brake fluid reservoir and forces the brake fluid out of the brake fluid reservoir;
- supplying brake fluid from the brake fluid reservoir to the one or more brake devices;
- and
- actuating the one or more brake devices with the supplied brake fluid to brake the gear assembly.
Dependencies are inferred from the claim text.