| 摘要 |
<p>A device and method for preventing velocity loss during strong wind for vertical-shaft wind power generators. At least one power generating unit is disposed on a tower column (1). A crane (4) is disposed on the top of the tower column. The crane is disposed with a hook (42). A blade assembly comprises at least two blades (3). The blade is bow-shaped and consists of a chord-shaped part (32) and a corresponding arc-shaped part (31). At least one supporting arm (11) is disposed between the chord-shaped part and the arc-shaped part. Multiple lift lugs (12) onto which the hook hangs are disposed on the supporting arm. At least two rollers (13) are disposed on the chord-shaped part. Tracks (8) are disposed in each power generating unit, the number of the tracks being equal to the number of blades. The tracks are synchronous to the blades. The arc-shaped part and the rollers form a sliding mechanism that is complementary to the movement of the tracks. The upper end and the lower end of the blade are disposed with male connecting mechanisms. Female connecting mechanisms are disposed on the track at positions corresponding to the upper end and the lower end of the blade. The male connecting mechanisms and the female connecting mechanisms complement each other. During strong winds, the crane lowers the blades onto the ground in the order from the bottom to the top. The device is easy to operate and solves the problems of velocity loss of power generators and blade breakage during strong wind and typhoon, thereby ensuring the safety of the power generators.</p> |
