Power transmission line maintenance robot

The utility model relates to the technical field of power transmission line maintenance equipment. The power transmission line maintenance robot comprises a robot body, the maintenance robot comprisesa circuit support used for supporting a power transmission line and a maintenance robot body hoisted on the power transmission line. The device further comprises a supporting protection device, the supporting protection device comprises a protection bin. The protection bin is fixedly installed on the side wall of the circuit support. An operation opening is formed in the other end of the protection bin; one end of the protection cabin close to the circuit support is provided with an opening suitable for a power transmission line to pass through. The maintenance robot body is arranged in the protection bin. The inner side wall of the protection bin and the side wall of the maintenance robot body are fixedly connected with an elastic belt; the maintenance robot can be supported, long-term accumulated downward actin