Profile shape for a crane boom

Details Profile shape for a crane boom Profile shape for a crane boom

B - Operations, Transporting

66

C

B66C 23/687 (2006.01)

Patent

CA 2697301

The invention relates to a crane jib for a crane, having a longitudinal axis and an imaginary contour line that extends in a transversal plane relative to an axis of symmetry (s) in an at least approximately mirror-symmetric manner and that is straight in at least some sections thereof, the contour line intersecting the axis of symmetry (s) in a first and a second point of intersection (S1, S2) and tapering in the direction of the second point of intersection (S2) at least before the last third of the distance (D) between the first and the second point of intersection (S1, S2), the tapered section of the contour line extending up to the second point of intersection (S2) and ending in a rounded- off section (1) on the bisecting line (s).

La présente invention concerne un bras destiné à une grue, présentant un axe longitudinal et une ligne de contour imaginaire qui est linéaire au moins par sections et s'étend dans un plan transversal de façon au moins approximativement symétrique par rapport à un axe de symétrie (s), la ligne de contour coupant l'axe de symétrie (s) au niveau d'un premier et d'un second point d'intersection (S1, S2) et s'amincissant en direction du second point d'intersection (S2) au moins avant le dernier tiers de la distance (D) qui sépare le premier et le second point d'intersection (S1, S2), l'amincissement de la ligne de contour se prolongeant jusqu'au second point d'intersection (S2) et se terminant par un arrondi (1) au niveau de l'axe de symétrie (s).

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