HOOK FOR LOAD-LIFTING CRANE Russian patent published in 2003 - IPC

FIELD: materials handling facilities. SUBSTANCE: invention relates to load-gripping mechanisms, particularly to hook devices. Proposed load-lifting hook is connected by turning axle with casing made in form of fork and provided with curvilinear slot in which axle of lifting yoke is fitted. Said lifting yoke is connected by cylindrical extension spring with rear side of hook held in vertical position by means of U-shaped locking clamp connected by axle with casing. Hook is made S-shaped. Locking U-shaped clamp of hook has different length legs. Hole is made on end of longer leg in which remote control sling is secured. Split spring washers fitted on axle of said clamp are fitted in clearances between casing and legs of locking U-shaped clamp. Bolt with end sharpened to obtuse angle is arranged in place of contact of said clamp with hook on locking clamp. Said bolt passes through nut. Hook is provided with part in its upper part with cone-like hole, bell of hole being pointed towards said end of bolt. EFFECT: improved convenience in operation. 7 dwg