Novel down-wind wind machine vane system capable of adjusting vane angular displacement

The utility model discloses a novel down-wind wind machine vane system capable of adjusting vane angular displacement. The novel down-wind wind machine vane system capable of adjusting the vane angular displacement comprises a wind speed induction device arranged on the wind-near side outside a machinery space, a controller which is arranged inside the machinery space and is in electric connection with the wind speed induction device, a wheel hub arranged on the wind-far side outside the machinery space, vane bodies connected with the wheel hub through a rotary shaft and actuation mechanisms which are arranged on two sides of the rotary shaft and are connected with the rotary shaft. The actuation mechanisms are in electric connection with the controller. The wind speed induction device transmits a speed signal to the controller, the controller sends out commands to command the actuation mechanisms to remove locking to the rotary shaft, the rotary shaft is driven to rotate, and the vane bodies which are connec