| 摘要 |
<p>Provided is a pitch drive apparatus, which is for a wind power generating apparatus and prevents deterioration of reliability thereof by a simple and low-cost structure. The pitch drive apparatus is provided with a cylinder (12) which changes a pitch angle by driving a windmill rotor blade (6) to rotate about an axis line with respect to a rotor head (4), and a cylinder bearing (14), which turnably supports a trunnion (16) extending substantially parallel to the axis line of the windmill rotor blade (6) from a cylinder (12). A supporting section which supports the trunnion (16) of the cylinder bearing (14) is provided with a vibration-proof rubber (21) which elastically supports the trunnion (16).</p> |
