Braking actuator for a hydraulic brake of an aircraft wheel

摘要

A braking actuator for a hydraulic aircraft brake, received in a cavity of a ring of the brake. The actuator comprises a liner structure (1) sealed in the cavity of the ring, and a piston (3) slidably mounted in the liner structure to apply a braking force. A wear-compensating device (10) defines a retreated position of the piston in the liner structure by an axially movable stop (11) which can be advanced by the piston during the application of a braking force and in frictional relationship with a fixed part (18) of the wear-compensating device secured to the liner. An elastic member (24) returns the piston to the retreated position defined by the piston bearing against the movable stop, the movable stop being in frictional relationship with the fixed part via at least one telescopic intermediate element (16) interposed between the movable stop (11) and the fixed part (18).

主权项

1. A braking actuator for a hydraulic aircraft brake, intended to be received in one of the cavities of a ring of the brake, the actuator comprising
a liner (1) adapted to be received in a sealed manner in the cavity of the ring; a piston (3) slidably mounted in a sealed manner in the liner along a sliding axis in order to apply a braking force when a pressurized fluid is introduced into the cavity; a wear-compensating device (10) which defines a retreated position of the piston in the liner by means of an axially movable stop (11) which can be advanced by the piston during the application of a braking force and in frictional relationship with a fixed part (18) of the wear-compensating device secured to the liner; an elastic member (24) for returning the piston to the retreated position defined by the piston bearing against the movable stop; wherein the movable stop is in frictional relationship with the fixed part via at least one telescopic intermediate element (16) interposed between the movable stop (11) and the fixed part (18), and wherein the intermediate element of the wear-compensating device comprises a first radially deformable sleeve (16), the deformation being obtained by cooperation of the first sleeve with an olive (15) secured to the movable stop.