Climbing robot walking along overhead line

The invention discloses a climbing robot walking along an overhead line, and the climbing robot comprises a support structure which comprises a controller. One side part of the support structure is provided with a front cantilever device, a center cantilever device and a rear cantilever device. The three cantilever devices are connected with the support structure through a cantilever device pedestal, and the front cantilever device and the rear cantilever device are located at two ends of the support structure. The front and rear cantilever devices each comprises a walking drive mechanism located at the top, an unfolding mechanism, a flexible rotating mechanism, a clamping mechanism, and a lifting mechanism which is located below, wherein the unfolding mechanism, the flexible rotating mechanism and the clamping mechanism are located at the central part. The center cantilever device comprises a walking drive mechanism at the top, an unfolding mechanism and a flexible rotating mechanismwhich are both located at