Detector for concrete bridge

A concrete bridge-checking device relates to an equipment for diagnosing the service state of a concrete bridge. The utility model comprises a checking platform-car, a track, a track supporting stand, and an embedded part. The checking platform-car comprises a running trolley, a driving mechanism, an operating platform, a working platform, a lifting mechanism, and a rotary mechanism. The track for the walking of the running trolley is welded on a bracket of the track-supporting stand of which rod units are welded on a steel plate of the embedded part of the bridge. When in checking the concrete bridge, the running trolley walks along the track and is driven by the manpower and dynamic power. The working platform is driven by the lifting mechanism to lift up and down and is driven by the rotary mechanism to rotate, which leads the working platform to reach the operating position to check the bridge. The utility model is rational in structure, simple in operation, and strong in practicability with wide application range and is applied to the checking on railways, highways, and bridges.