Lifting equipment for waffle slab

Lifting equipment for a waffle slab used in a construction, comprising:

• a main body bracket having a through hole in the center thereof;
• a sliding member slidably disposed in the through hole of the main body bracket and slidable between a first position and a second position;
• a plurality of clamping mechanisms, wherein each of the plurality of clamping mechanisms comprises:
• a clamping member comprising a first end which is pivotally connected to an outer edge of the main body bracket, and a second end which is configured to extend into a hole of the waffle slab for clamping the waffle slab and is connected to a holding portion;
• and
• a connecting rod, wherein a proximate end of the connecting rod is pivotally connected to a lower end of the sliding member and a distal end of the connecting rod is pivotally connected to the clamping member between the first end and the second end;
• wherein the sliding member comprises:
• an engagement member located at the top of the sliding member;
• a shaft portion connected to the bottom of the engagement member and slidably disposed in the through hole of the main body bracket;
• a sleeve fitted to an outer circumference of the shaft portion;
• and
• a flange fixed to the bottom of the shaft portion for preventing the sleeve from moving downward.