The present invention discloses a moving mechanism of a wind power blade deicing device, a wind power blade deicing device and a method. The moving mechanism of the wind power blade deicing device comprises an outer moving ring and an inner moving ring; the diameter of the inner moving ring is greater than the maximum width of a wind power blade; a first leg is mounted on the outside of the outer moving ring, and a first sucker is mounted at the end of the first leg; a first leg retractor is disposed inside the outer moving ring to control the retraction of the first leg and cause the first sucker to be adsorbed on the surface of the wind power blade; a second leg is mounted on the outside of the inner moving ring, and a second sucker is mounted at the end of the second leg; a second leg retractor is disposed inside the inner moving ring to control the retraction of the second leg and cause the second sucker to be adsorbed on the surface of the wind power blade; a slideway is disposed on the outside of the inner moving ring, a controllable pulley is disposed on the inside of the outer moving ring, and the inner moving ring and the outer moving ring can reciprocate on the slideway through the controllable pulley to realize crawl of the deicing device on the wind power blade.
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