Double-protection safety retaining ring for upper iron tower and lower iron tower and using method thereof

The invention provides an upper and lower iron tower dual-protection safety retaining ring and a using method thereof, and relates to the technical field of electric power tools, the upper and lower iron tower dual-protection safety retaining ring comprises a retaining ring, a spring lock clamp and a nylon safety rope, the spring lock clamp is elastically and rotatably arranged at the lower end of one side in the retaining ring, an inner groove is formed in the other side in the retaining ring, and a clamping arm is elastically and rotatably arranged in the inner groove; a spring clamping piece is arranged on the clamping arm; a connecting ring is arranged at the lower end of the retaining ring; the nylon safety rope is connected to the lower end of the connecting ring; the connecting iron ring is connected with the safety belt on the waist or the back, the nylon safety rope is adhered to the work clothes through the adhesive tape buckle, and the buckle ring is buckled on the foot nail, so that the spring loc