Accurate positioning dotting device based on municipal building construction

A precise positioning dotting device based on municipal building construction relates to the field of municipal building construction and comprises a movable base plate, a handrail assembly and a leakage-proof dotting assembly, one end of the movable base plate is fixedly connected with a supporting foot plate, the bottom of the supporting foot plate is rotatably connected with a roller shaft, and one end of the outer side of the roller shaft is fixedly connected with a second roller. A belt wheel disc is fixedly connected to the other end of the outer side of the roller shaft, a positioning dotting assembly is connected to the outer side of the belt wheel disc through a transmission belt, the top of the positioning dotting assembly is connected to one side of the middle of the lower surface of the movable base plate, and a supporting frame is arranged on the other side of the middle of the movable base plate; a handrail assembly is arranged on the upper surface of the movable base plate, a mounting assembly