Wind power variable pitch device

The utility model discloses a wind power variable-pitch device which comprises an impeller disc, a variable-pitch driving rod and blades, and an adjusting mechanism is arranged on the inner wall of the variable-pitch driving rod. And a clamping mechanism is arranged at the other end of the sliding rod. Through mutual cooperation in the adjusting mechanisms, the effect of adjusting the angles of the blades is achieved by enabling a sliding rod to move in a linear sliding groove formed in the surface of a rotating cylinder while a rotating shaft is driven to rotate by utilizing the movement of wind power on the surfaces of the blades, and through mutual cooperation of a second rectangular groove, a spring, a first protruding block, a third sliding block, a second sliding groove, a second protruding block and a third rectangular groove in a clamping mechanism; the second protruding block is arranged at the top of the sliding rod to extrude the protruding block, so that the angle of the paddle can be adjusted and