Pin grabber coupler

E - Fixed Constructions – 02 – F

Patent

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Details

E02F 3/36 (2006.01)

Patent

CA 2577732

Coupler has a safety lock and a latching hook. The safety lock pivots between an unlocked position in which it does not contact a first implement pin receivable within a pair of apertures, and a locked position in which it retains the first pin within the apertures. The latching hook pivots between an unlatched position in which it does not contact a second implement pin receivable within another pair of apertures, and a latched position in which it retains the second pin within the apertures. A spring biases the safety lock toward the locked position, maintaining engagement of the safety lock with the first pin and preventing its withdrawal from the apertures in the event of a hydraulic system failure. When the implement is released, the spring contin- ues to bias the safety lock toward the locked position, preventing withdrawal of the first pin from the apertures in the event of a hydraulic system failure before completion of the release operation.

Dispositif d'accouplement comprenant un verrou de sécurité et un crochet de verrouillage. Le verrou de sécurité pivote entre une position de déverrouillage dans laquelle il ne contacte pas le premier axe qui se loge au sein d'une paire d'ouvertures, et une position de verrouillage dans laquelle il retient la première goupille au sein des ouvertures. Le crochet de verrouillage pivote entre une position de déverrouillage dans laquelle il ne contacte pas le deuxième axe qui se loge au sein d'une autre paire d'ouvertures, et une position de verrouillage dans laquelle il retient la deuxième goupille au sein des ouvertures. Un ressort fait dévier le verrou de sécurité vers la position de verrouillage, le fixant ainsi au premier axe pour l'empêcher de quitter les ouvertures en cas de panne du circuit hydraulique. Une fois l'axe libéré, le ressort continue de faire dévier le verrou de sécurité vers la position de verrouillage, empêchant le premier axe de quitter les ouvertures en cas de panne du circuit hydraulique avant la fin du processus de relâchement.

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