Transportation device on high-altitude wire of high-voltage transmission line

The invention discloses a transportation device on a high-altitude wire of a high-voltage power transmission line, which belongs to the field of power cable erection and installation tools, and comprises a supporting plate, and is characterized in that two supporting shells are symmetrically fixed on the bottom surfaces of the top walls of the two ends of the supporting plate, open accommodating cavities are respectively formed in the bottom surfaces of the two supporting shells, a plurality of pulleys are uniformly arranged in the accommodating cavities, the plurality of pulleys are rotationally connected with the corresponding accommodating cavity correspondingly, sliding blocks are arranged below the two supporting shells correspondingly, sliding seats are slidably connected to the bottom surfaces of the sliding blocks, friction blocks are slidably nested in inner cavities of the top surfaces of the sliding blocks, connecting rods are rotationally connected to the opposite sides ofthe two sliding blocks co