Turning device of track inspection robot

The utility model provides a track inspection robot turning device which comprises a main frame, walking wheels are arranged on the upper portion of the main frame and abut against the top face of a T-shaped track, an auxiliary frame extending downwards is arranged on the lower portion of the main frame, a damping mechanism is arranged on the lower half portion of the auxiliary frame, and a guide mechanism is transversely installed on the damping mechanism. The guide mechanism comprises a mounting base, a cavity is formed in the mounting base, an opening is formed in one face of the mounting base, a clamping rail is arranged on the inner wall of the mounting base, a sliding block is mounted on the clamping rail, an upper spring is arranged on the top face of the sliding block, a lower spring is arranged below the bottom face of the sliding block, and the upper spring and the lower spring abut against the sliding block to the middle position in the mounting base. A guide wheel frame is arranged on the face, fa