Loader leveling linkage providing for alteration of its...

E - Fixed Constructions – 02 – F

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E02F 3/76 (2006.01) B66F 9/065 (2006.01) B66F 11/00 (2006.01) E02F 3/34 (2006.01)

Patent

CA 2138815

A tractor-mounted loader is provided with a leveling linkage including a pivot arm assembly pivotally mounted to each of a pair of loader arms at locations intermediate the ends of the latter. A first link is coupled between each post supporting the loader boom arm on the tractor and the pivot arm assembly while a tilt cylinder serves as a second link and is coupled between the pivot arm assembly and a tilt linkage for the implement. The pivot arm assembly of each linkage includes a pair identical plates fixed in spaced parallel relationship to each other and each plate contains an elongate pivot pin adjustment slot having the mounting pin for the tilt cylinder located therein. A releasable latch is provided for latching the mounting pin in a rear end of the slot to establish a first leveling linkage geometry desired for use with a loader bucket, the releasable latch being movable to an unlatched position permitting the mounting pin to move to a forward end of the slot for establishing a second leveling linkage geometry desired for use with a fork lift.

Cette invention concerne une tringlerie de mise à niveau pour benne chargeuse montée sur tracteur et comportant un bras d'articulation monté à pivot sur chacune de deux flèches de chargeur à mi-chemin entre les extrémités de ces dernières. Un premier lien est monté entre chacun des montants support de flèche et chacun des bras d'articulation tandis qu'un vérin sert de deuxième lien entre le bras d'articulation et la tringlerie d'inclinaison de la benne chargeuse. L'ensemble d'articulation de chaque tringlerie comprend une paire de plaques parallèles identiques espacées latéralement, chaque plaque comportant une coulisse de réglage de la position de l'axe d'articulation du vérin d'inclinaison. Un verrou permet de retenir l'axe d'articulation contre la paroi d'extrémité arrière de la coulisse pour déterminer une première géométrie de la tringlerie de mise à niveau appropriée à une benne chargeuse et, alternativement, contre la paroi d'extrémité avant de la coulisse pour déterminer une seconde géométrie de la tringlerie de mise à niveau appropriée à un élévateur à fourche.

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