A mobile lifting device, which preferably has a mobile frame with a plurality of castors. The lifting device has a closed fluid circuit, in particular a hydraulic circuit. It has a cylinder with an elevating work chamber. The elevating work chamber is fluidically connected to a fluid reservoir via a first fluid conduit and a second fluid conduit. In the first fluid conduit, a main pump is arranged which can be driven by means of a rotatably drivable hand tool to supply fluid from the fluid reservoir into the elevating work chamber, thereby extending a piston rod of the fluid cylinder, for example, to lift a load. In the second fluid conduit, a flow control arrangement is arranged which can be switched between a blocking state and a release state by means of a lowering operating element. When the piston rod is extended, the flow control arrangement is in the blocking state. To retract the piston rod, it is switched to the release state, allowing fluid to flow out of the elevating work chamber through the second fluid conduit.
LIFTING DEVICE
2024-05-09
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 |
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