Maintenance device for municipal engineering

The utility model discloses a maintenance device for municipal engineering and belongs to the technical field of municipal engineering equipment. Two rolling screws are vertically arranged between the left side and the right side of the bottom supporting plate and the left side and the right side of the top supporting plate, lifting motors are arranged at the positions, corresponding to the rolling screws, of the upper surface of the top supporting plate respectively, the lifting motors are used for driving the ball screws to rotate, and the ball screws drive the two ends of the main supporting plate to move up and down. A rotating frame is arranged among the driving grooved wheel, the driven grooved wheel and the supporting groove, the rotating frame is arranged, the driving grooved wheel is driven by a driving motor, the driving grooved wheel drives the driven grooved wheel through a conveying belt, rotation of the rotating frame is achieved, the rotating frame is matched with vertical movement of a main su