PCCP pipe core maintenance device

The utility model discloses a PCCP pipe core maintenance device. Including a girder, a reinforcing tripod is arranged on the main beam; walking frames are arranged at the two ends of the main beam; the walking frames are respectively connected with the main beams through threads; a fixed frame is arranged at the end part of the walking frame; grooves matched with the two ends of the main beam areformed in the fixing frame. A connecting flange is arranged at the other end of the walking frame; the walking frame is connected with the walking chassis through a connecting flange; a walking motoris arranged at the end part of the walking chassis; the walking motor is connected with the walking wheel through gear engagement; a walking rail is arranged at the end of the walking wheel, a sprayeris inserted into the main beam and fixed to the end of the main beam through an adjusting block, a water pipe is inserted into the walking frame, the sprayer is connected to the water pipe in a sliding mode, and the sprayer sl