MULTISCOOP HYDRAULIC CRAB BUCKET Russian patent published in 2008 - IPC B66C3/16 

FIELD: material handling equipment.

SUBSTANCE: invention relates to detachable load-gripping member of load-lifting crane designed for reloading of scrap and other shot-length loads. Proposed multiscoop hydraulic grab bucket has carrying structure, scoops hinge-mounted on structure and hydraulic drive of scoops including hydraulic cylinders connected with each scoop whose rod and piston spaces are connected by pipelines through hydraulic distributor with hydraulic pump and return main. Carrying structure is made in from of hollow cylinder on side surface of which are formed to accommodate hydraulic devices, pockets being closed by casing. Made integral with lower part of cylinder is working liquid reservoir of hydraulic system. Hydraulic cylinders of scoops are covered by casing and are provided with pilot controlled check valves installed on pipelines delivering working liquid into their piston space.

EFFECT: improved reliability and safety in operation.

4 dwg