Coupling device for connecting an implement to a working...

E - Fixed Constructions – 02 – F

Patent

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E02F 3/36 (2006.01)

Patent

CA 2245883

The invention relates to a coupling arrangement for coupling a working implement to a working machine and being of the kind in which the two coupling parts are mutually connected both mechanically and hydraulically with no manual handling of the coupling arrangement. The machine-mounted coupling part includes drive means (10, 24) for moving associated hydraulic coupling connection means into coupling engagement with hydraulic coupling means (19) on the implement-mounted coupling part, when coupling the machine and implement. According to the invention, the hydraulic coupling connection (19) on the implement-mounted coupling part is movable in the direction of maneuvering movement of the hydraulic coupling, and is moved by the drive means (10, 24) via the hydraulic coupling connection (14) on the machine-mounted coupling part until coming into abutment with an abutment means (6) on the machine-mounted coupling part. The arrangement includes springs that function to exert a pressure that is opposed to this movement. The arrangement ensures that the clearance required for this mechanical coupling will not prevent effective and positive connection of the hydraulic couplings.

Dispositif d'accouplement permettant d'unir un outil de travail et un engin de travaux. Dans ce dispositif, les deux pièces d'accouplement sont réunies l'une à l'autre à la fois mécaniquement et hydrauliquement, sans intervention manuelle. La partie de la'accouplement montée sur l'engin comporte un moyen d'entraînement (10, 24) amenant un moyen d'accouplement hydraulique qui lui est associé en liaison avec un moyen d'accouplement hydraulique (19) solidaire de la partie d'accouplement montée sur l'outil. Au moment de l'accouplement de la machine et de l'outil, le dispositif de couplage hydraulique (19) solidaire de la pièce d'accouplement montée sur l'outil se déplace dans le sens du mouvement de manoeuvre de l'accouplement hydraulique. Il est mû par un moyen d'entraînement (10, 24) par l'intermédiaire de l'organe de couplage hydraulique (14) de la partie de couplage solidaire de l'engin jusqu'à venir en butée avec un moyen de butée (6) sur la partie couplage montée sur l'engin. Le dispositif comporte des ressorts qui exercent une pression opposée à ce mouvement. Ce dispositif garanti que le dégagement nécessaire pour ce couplage mécanique ne s'oppose pas à une liaison efficace et directe des couplages hydrauliques.

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