A kind of unhooking lifting appliance for crossbeam hoisting, including plate body, lifting
rope,
rotating disc, torsional spring, winding disc, pull
rope and synchronous rotating mechanism. Wherein,
rotating disc is equipped with pawl, driving
pulley and two
rope passing holes, two rope passing holes are symmetrically arranged about the center of
rotating disc;Winding disc is equipped with winding rope disc and
ratchet,
ratchet is matched with pawl;The middle part of pull rope is wound on winding disc, and hook is fixed on the end of pull rope;Synchronous rotating mechanism includes synchronous belt and rotating hook, driven
pulley and
hook plate are arranged on rotating hook, driven
pulley is connected with driving pulley by synchronous belt.
Rotating disc, winding disc and pull rope constitute automatic centering mechanism, two hooks are respectively hooked in the two ends of crossbeam, can make this lifting appliance automatically move to the central part of crossbeam, make lifting heart and the
gravity center of crossbeam coincide, solve the unbalance problem of crossbeam when hoisting. This lifting appliance saves time and effort, automatically realizes the
hooking and unhooking of crossbeam, eliminates the unsafe factors in the existing hoisting mode.