Flatness detection device for municipal road construction

The utility model provides a flatness detection device for municipal road construction, relates to the technical field of road detection devices, and solves the problems that consumables are inconvenient to replace and measurement results cannot be visually expressed in the conventional device. A flatness detection device for municipal road construction comprises a transverse frame, supporting assemblies are arranged at the two ends of the transverse frame, a motor and a supporting plate are arranged on the transverse frame, a positioning assembly and a fixing assembly are arranged on the supporting plate, and a recording plate is arranged between the fixing assembly and the supporting plate; a sliding groove is formed in the transverse frame, a sliding block and a traction assembly are clamped in the sliding groove, a movable column is arranged in the sliding block in a penetrating mode, a rolling wheel is arranged at the bottom end of the movable column, a compression spring sleeves the movable column, clam