Road finishing machine with variable screw suspension

A road finishing machine comprising:

• a chassis;
• and
• first and second perforated supports at the chassis for fixing a screw bearing arrangement to the chassis, wherein the first and second perforated supports each comprise first and second hole patterns for fixing the screw bearing arrangement to the chassis, the first hole pattern being configured for fixing the screw bearing arrangement with respect to the chassis when a spreading screw with a first screw flight diameter is arranged in the screw bearing arrangement, and the second hole pattern being configured for fixing the screw bearing arrangement with respect to the chassis when a spreading screw with a second screw flight diameter which is smaller than the first screw flight diameter is arranged in the screw bearing arrangement, and wherein, for each perforated support, the first and second hole patterns extend offset in parallel with respect to each other;
• wherein the screw bearing arrangement includes a laterally extending, crossbar, first and second guide members that extend upwardly from the crossbar, and a drive supported on the crossbar for driving each spreading screw, the drive being positioned between the guide members, wherein each perforated support is configured to extend along a lateral side of a respective guide member when the screw bearing arrangement is fixed to the chassis, and wherein the first and second guide members are releasably attached to the first and second perforated supports, respectively, when the screw bearing arrangement is fixed to the chassis, and wherein the first and second guide members are configured to be fixed to the first hole patterns of the first and second perforated supports, respectively, when the spreading screw with the first screw flight diameter is arranged in the screw bearing arrangement, and the first and second guide members are configured to be fixed to the second hole patterns of the first and second perforated supports, respectively, when the spreading screw with the second screw flight diameter is arranged in the screw bearing arrangement.

A road finishing machine comprising:

• a chassis;
• a screw bearing arrangement for receiving a spreading screw;
• and
• first and second perforated supports at the chassis to fix the screw bearing arrangement to the chassis, wherein the first and second perforated supports each comprise first and second hole patterns to fix the screw bearing arrangement to the chassis by means of the first hole pattern or by means of the second hole pattern, wherein the first and second hole patterns are each connectable to a lifting cylinder to fix the screw bearing arrangement to the chassis of the road finishing machine by means of the cylinders, and wherein the screw bearing arrangement is configured to be fixed to the first hole pattern when a spreading screw with a first screw flight diameter is arranged in the screw bearing arrangement, and the screw bearing arrangement is configured to be fixed to the second hole pattern when a spreading screw with a second screw flight diameter which is smaller than the first screw llight diameter is arranged in the screw hearing arrangement, wherein for each perforated support, the first and second hole patterns extend offset in parallel with respect to each other;
• wherein the screw bearing arrangement includes a laterally extending crossbar, first and second guide members that extend upwardly from the crossbar, and a drive supported on the crossbar for driving each spreading screw, the drive being positioned between the guide members, wherein each perforated support is configured to extend along a lateral side of a respective guide member when the screw bearing arrangement is fixed to the chassis, and wherein the first and second guide members are releasably attached to the first and second perforated supports, respectively, when the screw bearing arrangement is fixed to the chassis, and
• wherein the first and second guide members are configured to be fixed tot he first hole patterns of the first and second perforated supports, respectively, when the spreading screw with the first screw flight diameter is arranged in the screw bearing arrangement, and the first and second quide members are configured to be fixed to the second hole patterns of the first and second perforated supports, respectively, when the spreading screw with the second flight diameter is arranged in the screw bearing arangement;
• wherein each lifting cylinder comprises a retaining plate configured to be detachably screwed to the chassis, a fastening projection extending from the retaining plate and inclined relative to the retaining plate, and a piston configured to he releasably mounted to a respective one of the first and second guide members by a coupling member, wherein each lifting cylinder is configured to be mounted along an orientation axis for fixing the screw bearing arrangement to the chassis, each lifting cylinder being configured to be mounted in a first orientation along the respective orientation axis to the chassis with the respective fastening projection being inclined upwards for attaching the first and second guide members to the first hole patterns of the first and second perforated supports, respectively, such that the screw bearing arrangement is positioned at a first level, and each lifting cylinder being configured to be mounted in a second orientation along the respective orientation axis to the chassis, wherein in the second orientation each lifting cylinder is rotated by 180 degrees about the respective orientation axis relative to the first orientation, with the respective fastening projection being inclined downwards for attaching the first and second guide members to the second hole patterns of the first and second perforated supports, respectively, such that the screw bearing arrangement, is positioned at a second level, and wherein the second level is lower than the first level.