B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
B66F 9/24 (2006.01) B66F 17/00 (2006.01)
Patent
CA 2580680
A materials handling vehicle (10) is provided comprising: a base (20); a carriage assembly (30, 60) movable relative to the base; at least one cylinder (50, 70) coupled to the base to effect movement of the carriage assembly relative to the base; and a hydraulic system (80) to supply a pressurized fluid to the cylinder. The hydraulic system includes an electronically controlled valve (300, 600) coupled to the cylinder. The vehicle further comprises control structure to control the operation of the valve (300, 600) such that the valve is closed in the event of an unintended descent of a carriage assembly in excess of a commanded speed.
L'invention concerne un véhicule de manipulation de matériaux (10) qui comprend : une base (20) ; un ensemble chariot (30, 60) mobile par rapport à la base ; au moins un cylindre (50, 70) relié à la base permettant d'assurer le déplacement de l'ensemble chariot par rapport à la base ; et un système hydraulique (80) conçu pour amener un fluide sous pression dans ledit cylindre. Le système hydraulique comprend une vanne commandée électroniquement (300, 600) reliée au cylindre. Ledit véhicule comprend en outre une structure de commande conçue pour commander le fonctionnement de la vanne (300, 600) de façon que cette dernière soit fermée en cas de descente imprévue d'un ensemble chariot à vitesse commandée trop élevée.
Dammeyer Karl L.
Jones William C. Jr.
Crown Equipment Corporation
Gowling Lafleur Henderson Llp
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