Traffic engineering pavement flatness detection device

The invention discloses a traffic engineering pavement flatness detection device which comprises a roller seat, a sweeping mechanism arranged on one side of the bottom end of the roller seat, a control box and a detection box arranged at the upper end of the roller seat, a plurality of detection wheels arranged on the other side of the bottom end of the roller seat, movable columns arranged at theupper ends of the detection wheels, and a plurality of movable holes formed in the roller seat, the movable column penetrates through the movable hole and is sleeved with a reset spring, the extending end of the movable column is arranged in the detection box, the control box is connected with an integrated control module, a GPS positioning module, a photographing snapshot module, an alarm module, an information processing module and a wireless transmission module, and a displacement acquisition module is connected into the detection box. The sweeping mechanism sweeps sundries in the area where the detection wheel pa