Three-dimensional plugging device for flue hanging hole

The utility model provides a three-dimensional plugging device for a flue hanging hole, which relates to the technical field of building construction and comprises a three-dimensional telescopic structure, an adjusting structure and a telescopic structure, the adjusting structure is arranged on the outer side of the three-dimensional telescopic structure, the telescopic structure is arranged at the top end of the three-dimensional telescopic structure, and the three-dimensional telescopic structure comprises an outer sleeve. The bent tongue-and-groove piece on the aluminum L-shaped formwork is in lateral socket connection with the large-headed bolt fixing buckle at the top end of the inner telescopic joint of the telescopic device, then the inner telescopic joint is lifted upwards until the aluminum L-shaped formwork is tightly attached to the bottom of the kitchen and bathroom plate, one person has one hole, and the work efficiency is greatly improved; secondly, after concrete pouring is completed, after the