Flattening device for high-toughness ultrathin wearing layer pavement with high flatness

The invention relates to the technical field of wearing layer pavement flattening, and discloses a high-flatness flattening device for a high-toughness ultrathin wearing layer pavement, the flattening device comprises a bottom plate, supporting plates are fixedly connected to the front side and the rear side of the two sides of the bottom plate, and a rolling wheel is rotatably connected between the opposite sides of the two supporting plates; an adjusting structure is arranged in the rolling wheel, and the adjusting structure comprises a water pouring opening, a water tank, a water drainage opening, a water suction pipe, a water pump, a shell, a connecting pipe, a balance weight cavity, a rotating pipe and a water injection pipe. The adjusting structure can control the water storage amount in the balance weight cavity through the water pump, a user can freely adjust the weight of the balance weight cavity according to different road surface conditions, different amplitudes are selected according to road surf