| 摘要 |
<p>The assembly has mobile blade units (33) mounted on a rotating shaft (31) and including an inner ring, which is positioned between a blade (331) and the shaft. A movable ring (20) is connected to the blade units, and comprises a flange (21) connected to an outer collar (22), which is rotatably connected to the inner ring. A space is defined between the inner ring and the shaft. Rotating elements are connected to an inner periphery of the inner ring and in contact with grooves (311) arranged in the shaft.</p> |
