Folding lift arm assembly for skid steer loader

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 3/34 (2006.01)

Patent

CA 2523660

A lift arm assembly (28) for a loader (10) comprises a pair of lift arm links (32,40) that are pivotally mounted together (42) at first ends of the links (32,40). A first lift arm link (32) is of substantial length and is pivotally mounted (34) to the frame (12) of the loader adjacent the rear lower portion of the frame (12) and extends upwardly. A second lift arm link (40) extends forwardly from the first lift arm link pivot (42) to a position ahead of the loader frame (12). A control link (68) has one end pivotally mounted adjacent a forward end of the loader frame (12), and a second end pivotally mounted to the second lift arm link (40) to guide the second lift arm link (40) as it is raised. An extendable and retractable actuator (62) is pivotally between the first lift arm link (32) and the second lift arm link (40). The control link (68) guides an outer end (56) of the second lift arm link (40) in a substantially vertical path as the actuator (62) is extended and retracted.

L'invention concerne un ensemble bras de levage (28) d'un chargeur (10), qui comprend deux liaisons de bras de levage (32, 40), toutes deux montées tournantes (42) aux premières extrémités des liaisons (32, 40). Une première liaison (32) de bras de levage, sensiblement longue, est montée tournante (34) sur le châssis (12) du chargeur jouxtant la partie inférieure arrière dudit châssis (12) et se prolonge vers le haut. Une seconde liaison (40) de bras de levage s'étend en avant à partir du pivot (42) de la première liaison de bras de levage vers une position à l'avant du châssis (12) du chargeur. Une liaison de commande (68) a une extrémité montée tournante contiguë d'une extrémité avant du châssis (12) du chargeur, et une seconde extrémité montée tournante sur la seconde liaison (40) de bras de levage pour guider la seconde liaison (40) de bras de levage lorsqu'elle est soulevée. Un actionneur (62) extensible et rétractable est placé tournant entre la première liaison (32) et la seconde liaison (40) de bras de levage. La liaison de commande (68) guide une extrémité externe (56) de la seconde liaison (40) de bras de levage de manière sensiblement verticale lorsque l'actionneur (62) est étendu et rétracté.

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