Adjustable attaching hoop device of tower crane

The utility model relates to an adjustable attached hoop device of a tower crane. The adjustable attached hoop device mainly comprises a front pressing plate box girder, a rear pressing plate box girder, a positioning plate, a reinforcing plate, channel steel I, channel steel II, a high-strength bolt I, a high-strength bolt II, a high-strength bolt III, front and rear pressing plate box girder adjustable bolt holes and channel steel panel adjustable bolt holes. The first channel steel and the second channel steel are welded to the positioning plate, two rows of bolt holes are formed in panels of the first channel steel and the second channel steel, and the first channel steel and the second channel steel are connected through high-strength bolts. Two rows of adjustable bolt holes allowing high-strength bolts to penetrate through are formed in front and rear pressing plate box girder panels, and the positioning plate and the reinforcing plate are connected with the front and rear box girders through the high-s