Control circuit for an attachment mounting device

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 3/36 (2006.01) E02F 9/22 (2006.01)

Patent

CA 2631659

A control circuit (400, 500) for an attachment mounting device (29) that has a closed position for securing an implement (36) and an opened position for releasing an implement (36). The control circuit (400, 500) includes at least one hydraulic actuator (402, 403, 502, 503), a control valve (408, 508) and an auto-close feature (428, 528). The control valve (408, 508) has at least a first energized position (413, 513) and a second energized position (415, 515). The first energized position (413, 513) applies pressurized fluid to the at least one hydraulic actuator (402, 403, 502, 503) to actuate the attachment mounting device (29)\ into the closed position. The second energized position (415, 515) applies pressurized fluid to the at least one hydraulic actuator (402, 403, 502, 503) to actuate the attachment mounting device (29) into the opened position. The auto-close feature (428, 528) is configured to be activated after the control valve (408, 508) is in the first energized position (413, 513) and is configured to be deactivated after the control valve(408, 508) is in the second energized position (415, 515).

L'invention concerne un circuit de commande (400, 500) destiné à un dispositif de fixation d'accessoire (29) qui présente une position fermée dans laquelle un outil (36) est bloqué et une position ouverte dans laquelle l'outil (36) est libéré. Ce circuit de commande (400, 500) comprend au moins un actionneur hydraulique (402, 403, 502, 503), une soupape de commande (408, 508) et un dispositif de fermeture automatique (428, 528). La soupape de commande (408, 508) présente au moins une première position sous tension (413, 513) et une deuxième position sous tension (415, 515). La première position sous tension (413, 513) applique un fluide sous pression à ou aux actionneurs hydrauliques (402, 403, 502, 503) pour que le dispositif de fixation d'accessoire (29) passe en position fermée. La deuxième position sous tension (415, 515) applique un fluide sous pression à ou aux actionneurs hydrauliques (402, 403, 502, 503) pour que le dispositif de fixation d'accessoire (29) passe en position ouverte. Le dispositif de fermeture automatique (428, 528) est conçu pour être activé une fois que la soupape de commande (408, 508) se trouve dans la première position sous tension (413, 513) et pour être désactivé une fois que la soupape de commande (408, 508) se trouve dans la deuxième position sous tension (415, 515).

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