Lightweight pavement damage detection structure

The utility model discloses a lightweight pavement damage detection structure, which belongs to the field of pavement crack detection and comprises a detection structure, and a limiting mechanism for limiting a vehicle-mounted host is movably mounted in a rotating groove. In order to solve the problem that a camera, a vehicle-mounted host, a touch screen display and a GPS (Global Positioning System) positioner are easily damaged due to the fact that a plurality of mechanisms are easily collided with other parts in a vehicle due to the fact that the vehicle-mounted host can be placed in a placement groove, the vehicle-mounted host can be placed in the placement groove by manually rotating the external strip and the torsion spring to deform through the arrangement of a torsion spring, an external strip, a rubber strip, a magnet plate, a magnet strip and a rubber plate, and the external strip is loosened, so that the camera, the vehicle-mounted host, the touch screen display and the GPS positioner are easily dam