Manitowoc Crane Group France

Gabriel Fraisse

Sylvain Raymond

Michel Lissandre

Florent Mourin

Lotfi Bouskine

Michael Mollenthiel

Sylvain Brunet

Anthony Champcenest

Tania Garcia Lovera

A crane includes a luffing jib and a lifting cylinder having a cylinder body and a movable rod hinged on the jib to displace the jib in lifting motion and in lowering motion, and a locking device adapted to cooperate with the lifting cylinder to mechanically lock the rod in a deployed holding position and block the jib in a raised holding configuration. The crane further includes a spacer hinged on the jib and supporting a stop, the spacer pivotable between a release position in which the spacer is shifted, allowing the movable rod to be freely displaced, and a locking position in which the spacer is folded so that the stop is capable of abutting on a bearing surface in a ball jointed connection with the cylinder body, to fixedly hold the movable rod in the deployed holding position.

Luffing jib crane with a device for locking the jib in a raised configuration

A lifting unit includes a jib foot forming a proximal part of a jib in a service configuration, a counter jib supporting a balancing ballast, a securing part between the jib foot and the counter jib to secure the lifting unit to a mast, and a cylinder connected to the jib foot such that the jib foot is movable between a lowered position and a lifted position. A second cylinder is connected to the securing part.

Lifting unit, luffing jib crane comprising such a lifting unit and method for assembling such a crane

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Anse, France

Gabriel Fraisse