Wall surface trepanning device for constructional engineering

The invention relates to the technical field of constructional engineering construction, in particular to a wall surface trepanning device for constructional engineering. A wall surface trepanning device for constructional engineering comprises a sliding rail, a sliding block is connected to the sliding rail in a sliding mode, an electric drill is installed on the sliding block, a U-shaped sliding rod is connected to a shell of the electric drill in a sliding mode through a sliding sleeve, the end of the U-shaped sliding rod is connected with a cover body used for covering a wall surface trepanning area, and a through hole for a drill bit on the electric drill to move is formed in the middle of the cover body. A lifting handle is connected to the sliding rail, an adsorption mechanism is arranged on the sliding rail, and the adsorption mechanism is used for being adsorbed to the wall face to fix the sliding rail, so that deviation during drilling of the electric drill is avoided. The sliding rail can be fixed