Device for driving an aircraft wheel in rotation

摘要

The invention relates to a device for driving rotation of an aircraft wheel comprising a rim (4) mounted to rotate on an axle (2) of landing gear about an axis of rotation (X), the device comprising a drive ring gear (103) and a drive actuator (101) having an outlet pinion (102) that co-operates with the drive ring gear to drive the wheel in rotation. The drive ring gear is mounted to rotate about the axis of the rim of the wheel, the drive device including selective coupling means (150) that are operable to link the rim and the drive ring gears together in rotation, or to disconnect them.

主权项

1. A device for driving rotation of an aircraft wheel comprising a rim (4) mounted to rotate on an axle (2) of landing gear about an axis of rotation (X), the device comprising a drive ring gear (103) and a drive actuator (101) having an outlet pinion (102) that co-operates with the drive ring gear to drive the wheel in rotation, the drive ring gear being mounted to rotate about the axis of the rim of the wheel, the drive device including selective coupling means (150) that are operable to link the rim and the drive ring gears together in rotation, or to disconnect them, the device being characterized in that the coupling means comprise:
first pawls (154) arranged between the rim and the drive ring gear to be movable between a retracted position in which they leave relative movement in rotation free between the drive ring gear and the rim, and an engaged position in which they enable the rim to be driven in rotation by the drive ring gear in a first direction of rotation; and second pawls (155) arranged between the rim and the drive ring gear to be movable between a retracted position in which they leave relative movement in rotation free between the drive ring gear and the rim, and an engaged position in which they enable the rim to be driven in rotation by the drive ring gear in a second direction of rotation; the first and second pawls being arranged in pairs and carried by the drive ring gear, each pair sharing a common pivot (153), their respective angular positions being controlled by means of blades (160) extending between two consecutive pairs and pivotally mounted on the drive ring gear (103) so as to raise selectively one or the other of the pawls in order to bring it into engagement with the rim.