Safe anti-falling lifting hook for crane

Abstract

According to the safety anti-falling lifting hook for the crane, a steel wire rope penetrates through the bottom of a shell, the top end of the steel wire rope is movably connected with a guide disc, a swing shaft rod is inserted into the guide disc, and the upper end and the lower end of the swing shaft rod are movably connected with supports; and a flitch plate is movably mounted at the tail end of the bracket and on the front surface of the guide disc, and the flitch plate is movably mounted in the lifting hook head. After a steel wire rope at the top of the lifting hook head is in a motion out-of-control state, the steel wire rope pulls a guide disc to quickly rotate, and a convex rod on the outer surface of the guide disc is in contact with an inclined block on the surface of a poke rod, so that the inclined block at the bottom of the poke rod is driven to be in contact with an inner inclined groove of an insertion rod; and the swinging shaft rod simultaneously drives the flitch at the top end of the bracket to expand outwards, so that the friction between the flitch and the guide disc is increased by utilizing the contact between the friction plate on the outer surface of the flitch and the guide disc, the descending speed of the steel wire rope is reduced, and the normal operation of the crane is prevented from being influenced after the lifting hook head is out of control.

Description

technical field [0001] The invention belongs to the technical field of cranes, and in particular relates to a safety anti-falling hook for a crane. Background technique [0002] Crane refers to a multi-action hoisting machine that vertically lifts and horizontally transports heavy objects within a certain range. The heavy objects are lifted from the pick-up location through the hook, and the heavy objects are displaced by the running, slewing or luffing mechanism. After lowering the heavy object, it returns to its original position, so a safety anti-drop hook is required to prevent the wire rope from breaking and the hook falling off due to falling. [0003] After the hook head is out of control, the crane cannot operate normally, the wire rope falls too fast, and the hook head cannot be prevented from falling after the wire rope is broken, and the safety of the crane cannot be guaranteed. Therefore, in view of this, for the existing The structure and defects of the crane a...

AI Technical Summary

Problems solved by technology

[0002] A crane refers to a multi-action hoisting machine that vertically lifts and horizontally transports heavy objects within a certain range. The heavy objects are lifted from the pick-up location through the hook, and the heavy objects are shifted through the running, slewing or luffing mechanism. Return to the original position after lowering the heavy object, so a safety anti-drop hook is needed to prevent the wire rope from breaking and the hook falling off due to falling

[0003] After the hook head is out of control, the crane cannot operate normally, the wire rope descends too fast, and the hook head cannot be avoided after the wire rope breaks, so the safety of the crane cannot be guaranteed. Therefore, in view of this, for the existing Research and improve the structure and deficiencies of the crane, and provide a safe anti-drop hook for cranes, in order to achieve the purpose of more practical value

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