Automatic hanging and unhooking lifting appliance for empty concrete box

According to the automatic hanging and unhooking lifting appliance for the empty concrete box, the guider is arranged in the lifting frame and combined with the guide rod in the guider, when acting force acts on the guide rod, the guide rod is driven to move upwards, the lifting beam is pulled to move upwards, and the connecting piece drives the hooks to rotate, so that the four hooks are folded inwards; in the lifting process, acting force is exerted on the lifting frame, at the moment, the lifting beam and the connecting piece are basically located on the same horizontal plane, at the moment, the hook is clamped with the inner side face of the concrete empty box, and the purpose of lifting is achieved. Compared with the prior art, the hole is reserved in the precast concrete empty box to serve as the lifting hole, a lifting ring does not need to be embedded, automatic hooking can be achieved through the guide rod, the lifting beam and the connecting piece, the hook is clamped on the lifting hole of the empt