Pulley used for overhaul of overhead power transmission lines

The utility model relates to a pulley used for overhaul of overhead power transmission lines. The pulley used for overhaul of overhead power transmission lines is characterized by comprising a frame, wherein the upper part of the frame is provided with a suspension sheave with fixed-axis rotation; the frame is provided with a lead-in port below the side of the suspension sheave, the lower part of the frame is provided with a ladder head traction sheave with coaxial fixed-axis rotation and a back-up protection rope sheave, and the top part of the frame is articulated with a control rod; the lower end of the control rod is provided with a damping rope buffer; and the structure of the damping rope buffer comprises a support fixedly connected with the lower end of the control rod, the support is internally provided with a fixed clamp block and a movable clamp block relatively arranged, and a screw rod fixedly connected with the movable clamp block is connected with a nut of the support. The pulley used for overha