Mobile crane with a telescopic jib
AssigneeMannesmann Aktiengesellschaft
InventorsChristian Reifenscheid, Walter Stowasser
Life of this patent
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Abstract
A mobile crane including an inclinable telescopic jib having a base case, a plurality of telescoping segments which can be extended and retracted, at least an inner-most one of the telescoping segments being pivotable in a direction of the inclinable jib and connected to a non-bending one of the segments by a hinge which forms a bending point which can be closed and opened, the hinge of the bending point being arranged on the underside of the jib, and an adjusting device arranged on a topside of the jib for opening and closing the bending point.
Claims10
A mobile crane comprising an inclinable telescopic jib having:
- a basic case;
- a plurality of telescoping segments which can be extended from and retracted into the basic case, at least one of the telescoping segments being pivotable in a direction of the inclinable jib and connected to a non-bending one of the segments by a hinge which forms a bending point which can be closed and opened, the hinge of the bending point being arranged on a longitudinally extending underside of the jib, the pivotable telescoping segment being pivotable to 180° relative to the non-bending segment, all of the telescoping segments being retractable into the basic case;
- and
- adjusting means arranged on a longitudinally extending topside of the jib for opening and closing the bending point, the top side being opposite the bottom side, the adjusting means including a first piston-cylinder unit mounted on the top side of the jib for moving the hinge, and a securing element for securing the hinge in the closed position.
Dependencies are inferred from the claim text.