Upper chord cross-section for telescopic parts of a crane

Details Upper chord cross-section for telescopic parts of a crane Upper chord cross-section for telescopic parts of a crane

B - Operations, Transporting

66

C

B66C 23/687 (2006.01)

Patent

CA 2549448

The invention relates to an upper chord cross-section for a telescopic part of a crane, comprising a central flat cross-sectional element (1); a first outwardly curved cross-sectional element (2) extending to each side of said central flat cross sectional element; a second flat cross-sectional element (3) extending from each of said first outwardly curved cross-sectional elements (2); a second outwardly curved cross-sectional element (4) extending from each of second flat cross-sectional elements (3); and a third flat cross-sectional element (5) extending from each of said second outwardly curved cross-sectional element (4). Such an upper chord cross-section offers an optimized measure of bearing capacity and simplicity of manufacture.

Section transversale d'une membrure supérieure pour la partie télescopique d'une grue, comprenant un élément central transversal et plat (1); un premier élément de section transversale incurvé vers l'extérieur (2) s'ouvre de chaque côté de l'élément central transversal et plat; un second élément transversal et plat (3) s'ouvre à partir de chacun des premiers éléments transversaux incurvés vers l'extérieur susmentionnés (2); un second élément transversal incurvé vers l'extérieur (4) s'ouvre à partir de chacun des seconds éléments transversaux et plats (3); un troisième élément transversal et plat (5) s'ouvre à partir de chacun des seconds éléments transversaux incurvés vers l'extérieur susmentionnés (4). Ce type de section transversale de membrure supérieure permet d'optimiser la mesure de la capacité portante et simplifie la fabrication.

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