Reducing bracket tool

The invention relates to a variable-diameter bracket tool. The variable-diameter bracket tool is mainly composed of a bracket bottom plate, a vertical hook plate, a positioning stud and a lifting hook. And a plurality of uniformly distributed screw holes are formed in the disc-shaped bracket, and the positioning studs can be reasonably screwed into the corresponding screw holes according to the size of a hoisted lining so as to ensure that a hoisted workpiece does not move and fall off. And a vertical hook plate is welded close to the middle of the bottom plate and is used for lifting of a lifting hook. The tool is mainly used for hoisting the polymer bushing and putting the polymer bushing into a liquid nitrogen cylinder, and the size of the bushing is shrunk in a low-temperature environment, so that the bushing is convenient to mount. It can be seen that the tool is simple in structure manufacturing, low in manufacturing cost and reasonable and convenient to use, and the problem that it is difficult to put