Abstract: The invention relates to a mobile machine (16, 20, 22) with a multi-axle chassis (14). To provide support to the ground, there is at least one support strut (30, 32) which can be supported on the ground at its free end on a vertically extendible foot (54) and can pivot about a pivoting axis (26, 28) on the chassis (14) parallel to the vertical axis of the vehicle from an inoperative position against a longitudinal side of the chassis into a laterally pivoted supporting position. In order to be able to transmit both vertical and horizontal forces and movements to the ground via the struts (30, 32) largely without plat and slip, each strut (30, 32) has a locking mechanism which secures it in its outwardly pivoted supporting position against rotation about its pivoting axis (26, 28).