Flat-structure lifting platform

B - Operations – Transporting – 66 – F

Patent

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Details

B66F 7/06 (2006.01) B66F 7/08 (2006.01)

Patent

CA 2145880

The flat lift assembly has a lift platform (11), which is articulated on a base frame via a pivotable lifting arm (7). For the pivot drive means of the lifting arm (7) an arm (1) and a cylinder-piston unit (5) are provided, wherein the arm (2) is acting as an articulated lever and this articulated lever is supported via an arm (2) on the base frame. The joint (9) of the arm (1) on the lifting arm (7) lies in the reeled-in position of the lifting arm (7) higher than the joint (4) of the cylinder-piston unit (5) on the arm (1). The arm (1) is formed as a pivotable two-armed lever in the form of an articulated lever, whose pivot axis lying between the free ends of the two-armed lever is pivotably supported at the base frame via at least one further arm (2) in height direction.

L'invention concerne une plate-forme de levage de structure plate comportant un plateau élévateur (11) qui prend appui sur un cadre de base par l'intermédiaire d'un bras élévateur (7) pivotant. Une bielle (1) et une unité cylindre-piston (5) assurent l'entraînement pivotant du bras élévateur (7). La bielle (1) sert de levier à genouillère et prend lui aussi appui sur le cadre de base par l'intermédiaire de bielles (2). Lorsque le bras élévateur (7) est en position rentrée, le point d'articulation (9) de la bielle (1) sur le bras élévateur (7) se trouve plus haut que le point d'actionnement (4) de l'unité cylindre-piston (5) sur la bielle (1). La bielle (1) se présente sous forme de levier pivotant à deux bras, du type levier à genouillère, dont le pivot situé entre les deux extrémités libres dudit levier à deux bras prend appui sur le cadre de base par l'intermédiaire d'au moins une autre bielle (2), de manière à pivoter dans le sens de la hauteur.

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