Device and method for removing dirt from a floor

A method for removing dirt from a floor, comprising:

• moving a device over the floor, the device comprising:
• a carrier frame,
• a motor mounted on the carrier frame,
• a rotating body rotatable in one direction of rotation about a first substantially horizontal rotation axis and connected with the carrier frame, which rotating body is drivable by the motor,
• several shovel-holders for shovelling the dirt from the floor, the shovel-holders are mounted on the rotating body spaced apart from each other in the peripheral direction, and the shovel-holders on rotation of the rotating body move along a path which runs at least partly along the floor, and the shovel holders each comprise a trough-shaped wall which delimits an internal receiving cavity for receiving the shovelled dirt, and the shovel-holders each comprise an open end which is substantially oriented in the rotation direction of the rotating body,
• a sweeper device for sweeping the dirt in each case out of one of the shovel holders on rotation of the rotating body, the sweeper device is arranged along the path of the shovel-holders on the carrier frame at a position which is substantially stationary in relation to the carrier frame, the sweeper device is fitted with a moveable and driveable sweeper element,
• the rotation of the rotating body in one rotation direction about the first substantially horizontal rotation axis via driving the rotating body by the motor,
• the displacement of the sweeping element during rotation of the rotating body, for each shovel-holder which passes the sweeper device, from a starting position outside the path of the shovel-holders into the path of the shovel-holders, through the open end of the passing shovel-holder into the internal receiving cavity of the passing shovel-holder and then on through the internal receiving cavity of the passing shovel-holder in order to sweep out at least a quantity of the dirt shovelled up by the passing shovel-holder, and then displacement of the sweeper element out of the passing shovel-holder and then away out of the path of the shovel-holders in order to allow the passing shovel-holder to pass by the sweeper device.