Road and bridge maintenance chiseling device and maintenance method

The invention discloses a road and bridge maintenance chiseling device and maintenance method. The device comprises a vehicle body, a first connecting frame is connected to the right side of the vehicle body, a fixed frame body is fixedly installed at the bottom of the first connecting frame, and an elastic plate with the radian capable of being changed is fixedly installed at the bottom of the fixed frame body; sliding rods are slidably connected to the sides, facing each other, of the two elastic plates, and chiseling mechanisms are fixedly mounted on the outer surfaces of the sliding rods.According to the chiseling device for road and bridge maintenance and the maintenance method, the multiple protruding blocks of different sizes fixedly installed on the outer surface of the arranged cutting head are used in cooperation with the cutting blade, the cutting blade cuts the bottom of a damaged concrete pavement, and the protruding blocks cut the edge of the bottom of the damaged concrete pavement; and transver