Profile shape for a crane jib

Details Profile shape for a crane jib Profile shape for a crane jib

B - Operations, Transporting

66

C

B66C 23/687 (2006.01)

Patent

CA 2697299

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, the contour line intersecting the axis of symmetry (s) in a first and a second point of intersection (S1, S2) and the contour line having a straight section the imaginary extension of which in the direction of the second point of intersection (S2) intersects the axis of symmetry (s) and forms an acute angle therewith. The centroid (F) of the surface enclosed by the contour line in the transversal plane lies between the first point of intersection (S1) and a center (M) that is equally interspaced from the first and second point of intersection (S1, S2) on the axis of symmetry (s).

La présente invention concerne un bras destiné à une grue, présentant un axe longitudinal et une ligne de contour imaginaire s'étendant dans un plan transversal de façon au moins approximativement symétrique par rapport à une 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 la ligne de contour présentant une section rectiligne dont le prolongement imaginaire en direction du second point d'intersection (S2) coupe l'axe de symétrie (s) et forme avec celui-ci un angle aigu, le barycentre (F) de la surface englobée par la ligne de contour dans le plan transversal se trouvant entre le premier point d'intersection (S1) et un point médian (M) situé sur l'axe de symétrie (s) à équidistance par rapport au premier et au second point d'intersection (S1, S2).

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