Highway tunnel inspection robot

The utility model discloses a highway tunnel inspection robot which comprises a track, a machine body and a power supply device. The track is arranged at the top of the highway tunnel, the section of the track is C-shaped, and the opening part of the track faces downwards. The machine body comprises a driving walking mechanism and a driven walking mechanism, and the driving walking mechanism and the driven walking mechanism are connected through a cross beam; a vertical pipe is vertically arranged below the cross beam, and a rack is arranged at the lower end of the vertical pipe. An upper shell and a lower shell cover the outer portion of the machine frame. The left end and the right end of the interior of the upper shell are each provided with a laser distance measuring sensor and an emergency stop switch. A tunnel appearance detection device is arranged at the right end of the lower shell; and an image acquisition device is arranged below the lower shell. According to the utility model, the problem of unsmo