Spraying maintenance device for concrete building

The utility model relates to the technical field of concrete building spraying maintenance, and discloses a concrete building spraying maintenance device which comprises a base, a water tank is installed on the upper portion of the base, a water pump is installed in the water tank, a water pipe is installed at the water outlet end of the water pump, a lifting plate is installed on the upper portion of the base, a motor is installed in the lifting plate, and a reciprocating lead screw is installed at the output end of the motor. A gear is rotationally connected to one side of the ball nut, a rack is installed in the lifting plate, the gear is meshed with the rack, a connecting block is fixedly connected to one side of the gear, water outlet pipes are installed on the two sides of the connecting block, and one end of each water pipe is installed on the connecting block. According to the spraying device, the gear moves along with the spraying device and rotates at the same time, the gear rotates to drive the con