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US 12,012,313 B2Granted
Crane
AssigneeLiebherr-Werk Biberach GmbH
InventorMatthias Kraupatz
Life of this patent
Estimating the term…
Abstract
The present invention relates to a crane, in particular in the form of a revolving tower crane, having a jib (3) and a counter-jib (4), which are articulated on a jib articulation piece (8), wherein the jib (3) comprises an outer jib part (3a), which is articulated on an inner jib part (3i) in a hinged manner and is held by a guy (10). According to the invention, the inner jib part (3i) is in the form of a cantilever, which is fastened to the jib articulation piece (8) in a flexurally rigid manner and held, wherein the outer jib part (3a) is articulated on the cantilever in a hinged manner and is held by the guy (10).
Claims20
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein the inner boom part has a profile cross-sectional height larger than a maximum profile cross-sectional height of the outer boom part and/or has a profile cross-sectional area larger than a maximum profile cross-sectional area of the outer boom part.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, and wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece;
- a guying tip releasably fastened to the articulation piece to which the guying tip of the guying for the outer boom part is lashed;
- and
- different guying tips having different heights, and wherein the different guying tips are on and rigidly fastened to the articulation piece.
1 more element
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein the guying is guided from the outer boom part over a guying support and is connected in an articulated manner at an inner articulation point via or at the articulation piece.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein the guying is guided inwardly from a guying support, falling toward the articulation piece at an acute angle to the longitudinal axis of the inner boom part and, wherein the guying is lashed to the articulation piece.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein a guying support is in a region of a joint between the inner and outer boom parts.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein a guying support projects over the inner boom part by a height that is from 25% to 200% of a height of a profile of the inner boom part.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece,
- wherein the counterboom comprises an inner counterboom part configured as a bending beam flexurally rigidly connected to the articulation piece, and
- wherein the counterboom comprises an outer counterboom part articulatably pivotally connected to the inner counterboom part and held by a counterboom guying.
A revolving tower crane comprising:
- a boom and a counterboom articulatably connected to an articulation piece, wherein the boom comprises an outer boom part articulatably pivotally connected to an inner boom part, wherein the outer boom part is held by a guying, wherein the inner boom part comprises a bending beam flexurally rigidly connected to the articulation piece, and
- wherein a counterboom guying is guided over a guying support whose height at least approximately corresponds to a height of a guying tip so that the counterboom guying extends approximately horizontally between the guying support and the guying tip.
Dependencies are inferred from the claim text.