The utility model provides a lifting tool belongs to the lifting device field, and it includes the supporting disk, connects rings and three piece at least connecting rods, the joint rings are for the ring -type and be used for the cover to establish the hoist and mount piece, the both ends of connecting rod are connected respectively the supporting disk with connect on the rings, the connecting rod is followed connect rings evenly distributed, be provided with rings on the supporting disk. The utility model provides a lifting tool will hoist a cover through the joint rings and set up a checkpoint, connecting rod attach fitting rings and supporting disk, and lifting device is direct to be connected with rings. Whole operation is compared with using the rope stationary phase, and operating time is short, and is hoisting the in -process, and PDC drill bit blank the phenomenon can not appear inclining, has guaranteed the safety of hoist and mount.