Abstract: The invention relates to a device for clearing a helix gap of an auger, comprising a retainer for holding the device on a mast of a drill, a guide tube which surrounds the auger in portions and is mounted on the retainer, and a clearing element which engages in the helix gap and is mounted on the retainer so as to be freely rotatable about the drilling axis. According to the invention it is provided for the guide tube to be mounted on the retainer so as to be freely rotatable about the drilling axis, for the clearing element to be firmly attached to the rotatably mounted guide tube, for the guide tube to be axially fixed in the direction of the drilling axis, for the purpose of clearing, and for the clearing element, together with the guide tube, to be able to be caused to rotate about the drilling axis by means of a pulling procedure of the auger for the purpose of clearing the auger.

Abstract: A construction machine comprising an undercarriage designed as a running gear and an upper carriage with a housing having side walls, wherein for access to the housing at least one housing opening with an access wall is provided, which is adjustable into an open position, and in an area in front of the housing opening a horizontal gangway is formed. At least one pull-out element is provided which can be pulled out horizontally between a retracted position and a pulled out position, in which the pull-out element projects horizontally from the housing, and in order to form the gangway a base plate is provided on the pull-out element.