Wacker-werke Gmbh & Co Kg

Julius Paukert

A vibratory roller having four drums that can be vibrated. The drums are driven individually, and are mounted in pairs in respective supports. One of the supports is attached to a front frame, and the other support is attached to a rear frame. The object of the invention is to improve the steering condition of vibratory rollers, and especially of trench rollers, in such a way that on the one hand changes in direction during normal travel, or small corrections in direction, can be rapidly undertaken without damaging the already compacted surface of the ground, and that on the other hand it is also possible to make sharp changes in direction practically on the spot. Previously known types of steering for vibratory rollers, namely fifth-wheel steering, transfer steering, articulated steering, and panzer steering, do not permit such a diversified steering condition. Pursuant to the invention, the desired steering condition is achieved by interconnecting the front and rear frames via a hinged or swivel coupling. The frames are pivotable relative to one another via a steering cylinder. When the steering cylinder is not actuated, the frames are positively held in the angular position corresponding to straight ahead travel. The drums disposed on one side of the roller can be driven and controlled in common and independently from the drums disposed on the other side of the roller.

Vibratory roller steering system

A handgrip, having dead-man-switch action, for mounting on the pole of construction equipment. The inventive handgrip is distinguished from known handgrips by increased operating comfort, simpler construction, and a more difficult-to-circumvent safety mechanism. The handgrip has a grip member that is displaceable in a support on the pole in its longitudinal direction and against spring force. At least one of the ends of the grip member has a limited freedom of movement in the radial direction. Also provided is a positively active slide coupling that displaces the grip member in the longitudinal direction relative to the support when the grip member is displaced in the radial direction relative to the support. The longitudinal displacement of the grip member is transmitted to a switching member for drive operation.

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Munich, Germany

Julius Paukert