Patent ID: 6106073
Filing Date: 2000-08-22
Classification: E01C

Abstract:
Road construction machine for the treatment of roadways comprising,an automotive wheel frame consisting of a steerable frontal wheel frame axle (6) with at least one support wheel (12) and two rear support wheels (14, 16),a driver's platform (4) in the area of the rear support wheels (14, 16 ) for a driver of the vehicle on a machine frame (8) supported by the wheel frame,a working means (20) arranged in or on the machine frame (8) which is substantially flush with the machine frame (8) on one side thereof, being a zero extension side (24) thereof,a driving motor for providing the driving power required for driving working means (20) and for moving the road construction machine,the rear support wheel (16) arranged on the zero extension side being pivotable from an exterior end position (26) projecting beyond the zero extension side (24) to a retracted interior end position (28) where the support wheel (16) does not project beyond the zero extension side, the rear support wheel being parallelly displaced between the interior and exterior end positions so that the wheel turns in the same direction in the interior end position as in the exterior end position for each direction of travel,a guide rod gear (30) consisting of a four-link mechanism with four vertical articulated axles (40-43) and two guide rods (40-46) pivotable in a horizontal plane connected to the rear support wheel, the guide rod gear pivoting the rear support wheel from the exterior end position to the retracted interior end position, anddrive means connected to the guide rod gear for pivoting the guide rod gear.