Loading dock leveler with lip extension mechanisms

B - Operations – Transporting – 65 – G

Patent

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Details

B65G 69/28 (2006.01) B65G 69/34 (2006.01)

Patent

CA 2733258

A dock leveler with a deck and an extendable lip that hangs pendant when the deck is in a stored position. A lip extension mechanism engages when the deck is raised to a raised or cocked position. As the deck is lowered to an intermediate transition position, the extension mechanism extends the lip to a fully extended position. At the transition position, the lip extension mechanism automatically disengages and a lip locking mechanism automatically and simultaneously locks and holds the lip in its lip fully extended position. When the deck is further lowered so that the lip comes to rest on a truck trailer, the locking mechanism automatically released or unlocked. The lip returns to its pendant position when the deck is raised from the truck bed. After the truck pulls away from the dock, the deck is lowered to its stored position.

L'invention porte sur un appareil de mise à niveau muni dune plateforme et dune lèvre apte à s'étendre. La lèvre s'étend de façon suspendue lorsque la plateforme est en position de repos. Un mécanisme d'extension de lèvre s'engage lorsque la plateforme est surélevée à une position surélevée ou armée. Pendant que la plateforme sabaisse vers une position de transition intermédiaire, le mécanisme d'extension étend la lèvre vers une position entièrement étendue. Arrivée à la position de transition, le mécanisme d'extension de lèvre se désengage automatiquement et un mécanisme de verrouillage de lèvre bloque et maintient automatiquement et simultanément la lèvre dans sa position entièrement étendue. Lorsque la plateforme est encore abaissée de telle sorte que la lèvre vient reposer sur une remorque, le mécanisme de blocage est automatiquement libéré ou débloqué. La lèvre revient à sa position de suspension lorsque la plateforme est surélevée de la plateforme de la remorque. Après le départ du camion, la plateforme est abaissée à sa position de repos.

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