The invention relates to a mobile lifting device (10), which preferably has a mobile frame (12) with a plurality of castors (13). The lifting device (10) has a closed fluid circuit, in particular a hydraulic circuit. It has a cylin-der (21) with an elevating work chamber (23). The elevating work chamber (23) is fluidically connected to a fluid res-ervoir (26) via a first fluid conduit (24) and a second fluid conduit (25). In the first fluid conduit (24), a main pump (45) is arranged which can be driven by means of a ro-tatably drivable hand tool to supply fluid from the fluid reservoir (26) into the elevating work chamber (23), thereby extending a piston rod (32) of the fluid cylinder (21), for example, to lift a load (20). In the second fluid conduit (25), a flow control arrangement (47) is arranged which can be switched between a blocking state and a re-lease state by means of a lowering operating element (48). When the piston rod (32) is extended, the flow control ar-rangement (47) is in the blocking state. To retract the piston rod (32), it is switched to the release state, al-lowing fluid to flow out of the elevating work chamber (23) through the second fluid conduit (25).
LIFTING DEVICE
DISPOSITIF DE LEVAGE
2024-05-08
Patent
Electronic Resource
English
IPC: | B66F HOISTING, LIFTING, HAULING, OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD , Hub-, Verhol- oder Schubvorrichtungen, soweit nicht anderweitig vorgesehen, z.B. Vorrichtungen mit unmittelbarer Krafteinwirkung auf die Last / F15B SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL , Druckmittelbetriebene Systeme allgemein |
Bracket for lifting, lifting device and lifting device assembly
European Patent Office | 2024
|