Drive device for a trolley or similar

A drive device for a handling trolley, including

• a frame,
• a wheel support movable relative to the frame about a turning axis,
• a driving wheel carried by the wheel support, and movable relative to the wheel support about an axis of rotation,
• a steering motor for rotating the wheel support relative to the frame, having a rotor rotating about an axis of rotation which is coincident with the turning axis,
• a reduction gear connecting the steering motor to the wheel support, the reduction gear including an epicyclic train including:
• an inner sun gear rotated by the shaft of the steering motor,
• at least one planet gear rotated about a physical axle by the inner sun gear, and
• a planet gear carrier on which the planet gear is rotatably mounted,
• a ring gear surrounding the inner sun gear and the planet gear,
• the shaft of the steering motor being fixed relative to the inner sun gear, the wheel support being fixed relative to one element from the planet gear carrier and from the ring gear and the frame being fixed relative to the other element from the planet gear carrier and from the ring gear, the wheel support being fixed relative to the ring gear and including an opening for connecting the planet gear carrier to the frame, the planet gear carrier including at least one bearing to allow the rotation of the wheel support about the planet gear carrier.