Road milling machine for the treatment of road pavements, as well as method for pivoting a suspension unit of a road milling machine

Abstract Road milling machine for the treatment of road pavements, as well as method for pivotinq a suspension unit of a road milling machine Road milling machine (1) for the treatment of road surfaces, with a controller for the travelling, steering and milling operation, with a machine frame (2) height-adjustable via lifting columns (3), with a chassis with, as a minimum, rear suspension units (4) as seen in the direc 0 tion of travel, each provided with a travel drive (36), where said suspension units (4) are arranged at the lower ends (18) of the lifting columns (3) exhibiting a longitudinal axis (20), with a working drum (5) arranged at the machine frame (2) to rotate about an axis (7) of the working drum, 5 with a pivoting arm (6) pivotable about a pivoting axis (30) extending parallel to the longitudinal axis (20) of a lifting column (3), where said pivoting arm (6) connects a rear lifting column (3) to the machine frame (2) in a pivotable fash ion and transfers a suspension unit (4) from a first outer end position (12) pro jecting laterally relative to the machine frame (2) to a second inner end position 0 (14) and back, with a steering device (22) for the pivotable suspension unit (4), with a first driving device acting on the pivoting arm (6), with a second driving device acting on the steering device (22) by means of which a steering angle of the suspension unit (4) is adjustable, 25 it is provided for the following features to be achieved: the travel drive (36) of the pivotable suspension unit (4) forms the first driving device for the pivoting movement of the pivoting arm (6) with the suspension unit (4) being in permanent contact with the ground surface. 30 (Fig. 1) 4576829_1 (GHMatters) P94513.AU