Wirtgen Gmbh

Ralf Schug

Cyrus Barimani

Martin Dahm

Günter Hähn

Guenter Haehn

Markus Zimmermann

Werner Aeschlimann

Werner Aeschliman

Günter Hahn

A self-propelled construction machine includes a plurality of swing legs, each swing leg being supported from a ground surface by an associated crawler track steerably connected to an outer end of its associated swing leg. Pivotal movement of a swing leg may be accomplished by steering the associated crawler track through a non-zero steering angle until the lateral movement of the crawler track achieves the desired pivoting movement of the associated swing leg.

Swing over steering

A self-propelled construction machine includes machine frame that is laterally extendible to adjust a width of the machine frame. A frame lock can selectively lock and unlock the machine frame to permit the width adjustment. A controller includes a frame extension mode configured to steer at least one ground engaging unit to provide a lateral force to adjust the width of the machine frame as the machine is driven across the ground surface by the ground engaging units.

Frame width adjustment by steering

Methods of and apparatus for controlling relative telescoping extension or retraction of multiple telescoping assemblies is provided. The telescoping assemblies connect the main frame of a slipform paver to a side member of the slipform paver. Each telescoping assembly has a telescopic lock associated with the telescoping assembly. A common telescoping force is applied across the telescoping assemblies to widen or narrow the frame width of the slipform paver. Extension of the telescoping assemblies is monitored, and activation of the telescopic locks is controlled so as to determine which of the telescoping assemblies is allowed to telescope under application of the common telescoping force.

Selective clamping of chassis

A slipform paver includes a chassisable to be adjusted in the heightwise direction and having a mounting unitarranged on the chassis for fastening on an arrangementfor molding flowable material. The slipform paver is characterised in that the mounting unitfor fastening on the concrete moldis mounted on the chassisof the paver to be pivotable on an axisextending in the direction of operation of the slipform paver. To produce parts of a structure whose orientation varies along their length, the concrete mold fastenedto the mounting unit is pivoted on the axis of pivotby means of a pivoter unitwhereas the chassis of the paver maintains its orientation.

Slipform paver

A self propelled slipform paver apparatus includes a chassis, a plurality of ground engaging supports, and a plurality of lifting columns extending between the chassis and the ground engaging supports. A chassis mounting unit is connected to the chassis. A mold for flowable material is also included. A mold mounting unit is connected to the mold. One of the chassis mounting unit and the mold mounting unit includes at least one front claw-like fastening member and at least one rear claw-like fastening member. The claw-like fastening members are open in the same direction either in the direction of operation or opposite to the direction of operation. The other of the chassis mounting unit and the mold mounting unit includes at least one front mating member and at least one rear mating member. The mating members are shaped and arranged to be received in the claw-like fastening members.

Growing community of inventors

Oberlahr, Germany

Ralf Schug