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AssigneeKuhlmann & Rust KG, Maschinenfabrik
InventorHans-Jochen Kuhlmann
Estimating the term…
A remote control system for the jack cylinders of a hydraulically operated crane includes a plurality of regulating valves for controlling respective jack cylinders, the regulation of each valve being controlled by the movement of a respective valve spool connected to a respective lever forming part of a linkage including an arm mounted on a rotatable shaft and connectable to the shaft by a respective electromagnetically operated clutch so that by engagement of one said clutch and rotation of the shaft to a predetermined position the corresponding valve spool may be correspondingly positioned to move the associated jack cylinder accordingly. Engagement of the clutches and rotation of the shaft can be controlled by a portable actuating unit connected to the rest of the system by an electrical cable, the system including a control means which adjusts the position of the shaft to correspond with the setting of a control member on the actuating unit.
A system for the remote control of a jack cylinder of a hydraulically operated crane, comprising a regulating valve for connection into the hydraulic circuit of the jack cylinder, said regulating valve including a body part and a movable member, means mounting said movable member in said body part for movement for controlling the regulation of the valve, the system further including a member fixed with respect to said body part of the valve, a shaft, means mounting said shaft for rotation in said fixed member, coupling means for coupling said shaft to said movable member for rendering the position of the movable member of the valve dependent on the angular position of said shaft, said coupling means including a linkage including a first arm having first and second ends, means for releasably coupling said first end of said first arm to said shaft, a connecting link having first and second ends, means pivotally connecting said first end of said connecting link with said second end of said first arm, a second arm generally parallel with said first arm, means mounting said second arm for pivoting about an axis fixed with respect to said fixed member, means pivotally connecting said second end of said connecting link with said second arm, and means connecting said movable valve member with said second arm, a measured value transducer coupled to said shaft for sensing the angular position of the shaft, reversible driving means for rotating said shaft,
A system for the remote control of a plurality of jack cylinders of a hydraulically operated crane, comprising a plurality of regulating valves for connection into the hydraulic circuit of the respective jack cylinder, each said regulating valve including a body part and a movable member, means mounting each said movable member in said respective body part for movement for controlling the regulation of the respective valve, said system further including a member fixed with respect to said body parts of said valves, a shaft, means mounting said shaft for rotation in said fixed member, coupling means for coupling said shaft to any selected one of said movable members for rendering the position of the respective movable member of the respective valve dependent on the angular position of said shaft, a measured value transducer coupled to said shaft for sensing the angular position of the shaft, reversible driving means for rotating said shaft,
Dependencies are inferred from the claim text.