Automatic positioning device of tunnel section detector

The utility model relates to the field of detector automatic positioning, in particular to a tunnel section detector automatic positioning device which comprises a detector, a positioner is arranged at the bottom end of the outer side of the detector, a balance block is fixedly connected to the bottom end of the detector, and a supporting frame is connected to the outer side of the bottom end of the balance block in a sliding mode. A limiting rod is arranged on the inner side of the supporting frame and penetrates through the supporting frame, and the limiting rod is connected with the supporting frame in a rotating mode. The positioning nails are arranged and matched with the sliding connection of the steering ball, the fixed connection of the pedal plate and the positioning nails and the rotating connection of the rotating rod and the pedal plate and the support are matched, so that the pedal plate and the support are fixed. The support is opened and erected, the steering ball is rotated ...