Special hoisting device for nuclear reactor driving rod assembly

The utility model belongs to the technical field of nuclear power station reactor maintenance, and particularly discloses a special hoisting device for a nuclear reactor driving rod assembly, which comprises a hoisting rod and a sleeve, one end of the hoisting rod is connected with two chucks, the interior of the hoisting rod is hollow, and the hoisting rod penetrates through the sleeve and is in axial sliding fit with the sleeve; two key grooves are formed in the lower portion of the hanging rod, two symmetrically-arranged self-locking keys are connected to the lower portion of the sleeve, and the two self-locking keys are located in the two key grooves correspondingly and are in vertical sliding fit with the key grooves; the included angles between the two clamping heads and the two key grooves are the same as the included angle between a guide groove and a hoisting groove in the driving rod assembly; the clamping head on the lifting rod can rotate into the lifting groove of the driving rod assembly after b