Pavement maintenance watering device for expressway construction

The utility model discloses a pavement maintenance watering device for expressway construction. Vehicle base, an iron removing device is arranged on the front side of the upper end of the vehicle base, a water tank is arranged on the rear side of the upper end of the vehicle base, a motor is arranged on the rear side of the water tank, a first rotating shaft is arranged at the output end of the motor, a driving wheel is arranged on the first rotating shaft, a bearing seat is arranged at the upper end of the vehicle base and located on the rear side of the motor, and a second rotating shaft. The water pump works; water in the water tank is pumped to the spray pipe through the water guide hose; the first rotating shaft and the driving wheel are driven to rotate through work of the motor, thedriven wheel and the second rotating shaft rotate through belt transmission connection, the spraying area of the spraying pipe is wider, the spraying angle of the spraying pipe is adjusted through stretching and retracting o