| 摘要 |
The invention relates to a windmill of the type having an elongated propeller shaft inclining upwardly away from the wind direction so that the height of the propeller above ground is substantially determined by the length of the shaft and its angle with the horizontal plane. The invention is based on the recognition that the wind load on the propeller is substantially acting as a longitudinal tensile strain in the shaft when its angle with the horizontal plane is within a certain angle range, and according to the invention it is therefore sufficient to support the shaft by a simple staying device via a bearing. One end of the staying device may be attached solely to the non-rotating part of the bearing, resulting in the achievement of an inexpensive and light construction having a relatively thin shaft. |
