B - Operations – Transporting – 66 – B
Patent
B - Operations, Transporting
66
B
B66B 1/04 (2006.01) B66B 5/02 (2006.01)
Patent
CA 2316837
The invention concerns hydraulic lift actuating device, comprising an actuator (1) whereof the pressure chamber (1a) is connected to a pump (11) by a down duct (15) and a riser duct (16). A pressure accumulator (4) is connected to the down (15) and riser (16) ducts by bypass ducts (15a, 16a), each duct comprising an electrovalve (2, 2a; 6, 6a). When the lift is going down, the hydraulic fluid is transferred from the pressure chamber (1a) towards the accumulator (4) by the down duct (15) and the bypass duct (16a). For the lift to go up, the hydraulic fluid is transferred from the accumulator (4) towards the pressure chamber.
L'invention concerne un dispositif d'entraînement pour ascenseur hydraulique, qui comporte un vérin (1) dont la chambre de pression (1a) est reliée à une pompe (11) par un conduit de descente (15) et un conduit de montée (16). Un accumulateur de pression (4) est relié aux conduits de descente (15) et de montée (16) par des conduits de dérivation (15a, 16a), chaque conduit comporte une électrovanne (2, 2a; 6, 6a). Au cours de la descente de l'ascenseur, le fluide hydraulique est transféré de la chambre de pression (1a) vers l'accumulateur (4) par le conduit de descente (15) et le conduit de dérivation (16a). Pour la montée de l'ascenseur, le fluide hydraulique est transféré de l'accumulateur (4) vers la chambre de pression (1a).
Kadoche Emile
Nk System Nv
Sim & Mcburney
LandOfFree
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