Nuclear power station large penetrating piece adjustable tool

The utility model relates to the technical field of nuclear power station penetrating pieces, in particular to a nuclear power station large penetrating piece adjustable tool and an adjusting method. A plurality of door type plates are arranged on lining bracket beams in the adjustable tool. A hole and an adjustable bolt are arranged at a top plate of each door type plate. The adjustable bolts are adjusted according to the inner wall shapes of the penetrating pieces, and multi-point contact of the adjustable bolts and the penetrating pieces is achieved. A plurality of rows of lining bracket beams comprising the door type plates and the adjustable bolts are fixedly arranged on lining main horizontal beams and are placed on supporting stand column in an overall mode, and the lining main horizontal beams are fixed on top plates of the supporting stand columns through limiting pieces. The tool can be used for hanging the penetrating pieces, deforming during penetrating piece hanging and mounting construction can be effectively lowered, the adjustable tool is convenient to assemble and disassemble, recycling can be achieved, the tool is especially suitable for nuclear power station high wall body large penetrating piece construction with multiple units, and meanwhile the tool can be used for penetrating piece modularity mounting construction.