Automatic rope telescopic device used on insulation bucket

The utility model discloses an automatic rope telescopic device used on an insulation bucket, which is characterized by comprising two outer shells arranged in parallel and a main shaft fixedly arranged between the two outer shells, the main shaft is sleeved with a rope disc, the rope disc comprises two circular ring side plates and a shaft sleeve fixed between the two circular ring side plates, and the shaft sleeve is sleeved with the two outer shells. A hook hung on the side wall of the insulation bucket is fixedly arranged on the upper side portion of the outer shell, the periphery of the main shaft is sleeved with a spring wound into a circle, the first end of the spring is fixed to the main shaft, the second end of the spring is connected to the rope disc, the silk rope is wound around the periphery of the shaft sleeve, the first end of the silk rope is fixed to the rope disc, and the second end of the silk rope is connected to the rope disc. The second end of the silk rope is a telescopic free end, catc