Manitowoc Crane Group France Sas

Grove US LLC

Dieter Stuehrwoldt

Bernd Backes

Frank Richter

Jann Reesing

Johannes Schuermann

Stephan Maywald

Franz Bischof

Jens Ennen

A telescopic jib bracing unit for a mobile crane includes a holding frame which is embodied for fastening to the telescopic jib of the mobile crane and exhibits an open cross-section, the cross-sectional opening of which enables the jib to be retracted into the holding frame, and two bracing supports which are connected by the holding frame to form a structural unit. Two frame parts which form the open cross-section of the holding frame are coupled to each other via a coupling point such that they can be moved with respect to each other. A bracing unit transport system, a mobile crane and a fitting method are also provided.

Telescopic jib bracing device

A vehicle crane includes a carbody, a turntable rotatably mounted on the carbody, a jib mounted on the turntable that can be tilted about a horizontal axis, and a counterweight assembly mounted on the turntable and can be moved relative to the turntable. A coupler mechanically couples the position of the counterweight assembly to the tilt angle of the jib. The coupler is embodied such that it can be decoupled.

Vehicle crane with decouplable counterweight assembly

A self-propelled work machine, in particular a mobile crane, comprises an undercarriage configured for moving the work machine, a superstructure which is rotatably mounted on the undercarriage, and a drive device comprising a drive motor. The drive device comprises a moment transmission which is formed between the superstructure and the undercarriage and configured to transmit power outputted by the drive motor between the superstructure and the undercarriage in the form of a moment. At least one and, in particular, all of the elements to be driven receive a moment about an axis which extends in the region of a rotary bearing of the superstructure and the undercarriage, in particular about the rotational axis of the superstructure.

Self-propelled work machine

The invention relates to a locking system for a telescopic crane jib, in particular for a mobile crane, in which a lock is established between a telescoping cylinder () and a telescopic part (-) by means of a locking unit () in order to extract and retract the telescopic parts, and the locking unit () is disposed on the telescoping cylinder () in such a way that it can be moved longitudinally.

Locking system for telescopic crane jib with movable locking unit

A locking mechanism for telescoping sections, in particular for a mobile crane boom, includes a linearly shiftable locking bolt for connecting and releasing an inner telescoping section with respect to an outer telescoping section, said locking bolt being maintain ed biased in its extended position. The locking bolt is shifted by means of a rotary actuator from its extended position into its retracted position.

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Wilhelmshaven, Germany

Dieter Stuehrwoldt