Low-voltage overhead crossing protection device

The utility model relates to the technical field of wire and cable construction, and discloses a low-voltage overhead crossing protection device which comprises two clamping plates, a plurality of first screws are in threaded connection with the inner wall of the lower clamping plate, two adjusting plates are arranged at the top end of the upper clamping plate, metal plates are arranged on the corresponding side faces of the two adjusting plates respectively, and the metal plates are arranged on the inner wall of the lower clamping plate. Bolts are in threaded connection with the connecting positions of the adjusting plates and the metal plates, a boss is arranged at the top end of the lower metal plate, a rotating rod is arranged at the bottom end of the upper metal plate, a groove is formed in the inner wall of the top end of the boss, the rotating rod is rotationally connected to the inner wall of the groove, two clamping blocks are arranged at the top end of the upper adjusting plate, and the two clamping