Gravity balance fan-shaped anti-unhooking device automatic unhooking lifting appliance

Abstract

The utility model belongs to the technical field of lifting appliance, concretely relates to gravity balance fan -shaped anti -unhooking device automatic unhooking lifting appliance, include: triangle connecting plate, bearing iron chain, unhook, lifting hook connecting plate, hinge point axle, hook, connecting rod, counterweight, lock lug, fan -shaped anti -unhooking device, steel ball spring lock, limit block and balance iron chain, fan -shaped anti -unhooking device is welded in the hinge point place below lifting hook connecting plate, the steel ball spring lock symmetry is installed in the upper portion in lifting hook connecting plate, limit block is welded in lifting hook connecting plate side edge, balance iron chain is installed below triangle connecting plate, the utility model forms the rotary connection through hinge point axle and lifting hook connecting plate, the arc structure of fan -shaped anti -unhooking device can provide the guiding and limiting effect when hook rotates, realizes mechanical locking through the spring force action and the recess cooperation on lock lug, through the rotation angle of limiting lever hook, above -mentioned structure cooperation ensures the coordinated operation of each component in the hoisting process, realizes safe and reliable automatic unhooking function convenient operation.

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