Hydraulic control circuit for a dock leveler

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 69/28 (2006.01)

Patent

CA 2334747

A hydraulic control circuit for a dock leveler which includes a deck (D) pivotable between stored and raised positions and a lip (L) pivoted to the deck for movement between pendant and extended positions, the hydraulic control circuit, including a deck cylinder (10) couplable to the deck for controlling motion of the deck, a lip cylinder (20) couplable to the lip for controlling motion of the lip, a pump (P) for providing a source of pressurized fluid to the deck and lip cylinders, and an operator-actuated switch (70) for selectively directing the pressurized hydraulic fluid to one of said deck cylinders and said lip cylinder.

L'invention concerne un circuit de commande hydraulique pour un appareil de quai de mise à niveau. Cet appareil comprend un pont (D) pouvant pivoter entre une position de stockage et une position surélevée, et un bec (L) pivotant par rapport au pont pour se déplacer entre des positions pendante et étendue. Ce circuit de commande comprend un vérin de pont (10) pouvant être couplé au pont pour contrôler le déplacement de ce dernier, un vérin de bec (20) pouvant être couplé au bec en vue de contrôler également le déplacement de ce dernier, une pompe (P) pour fournir une source de fluide sous pression aux vérins de pont et de bec, et un commutateur actionné par opérateur (70) pour diriger, de manière sélective, le fluide hydraulique sous pression vers un desdits vérins de pont ou de bec.

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