Overhead transmission line robot capable of crossing tower without auxiliary bypass

The invention discloses an overhead transmission line robot capable of crossing a tower without an auxiliary bypass, which comprises a control box and a cross rod which are arranged at the top of the robot, the control box is slidably arranged at the bottom of the cross rod, and vertical telescopic mechanisms are slidably arranged at the two ends of the top of the cross rod; the vertical telescopic mechanism is arranged at the top of the cross rod in the vertical direction, a two-way telescopic mechanism is arranged at the top of the vertical telescopic mechanism, a front wheel arm and a rear wheel arm are arranged at the two ends of the two-way telescopic mechanism respectively, a power wheel used for driving is arranged at the top of the rear wheel arm, and a supporting wheel is arranged at the top of the front wheel arm; a control switch is arranged in the control box and connected with the vertical telescopic mechanism and the bidirectional telescopic mechanism, the overhead transmission line robot capabl