| 摘要 |
A turbine blade root to hub coupling comprising an adapter plate 11 with two distinct regions, a root connector region 13 and a hub connector region 12, the root connector region being radially outward of the hub connector region. The blade root (7, fig. 4) and/or the hub interface may have a circular cross-section, the latter preferably comprising a pitch bearing (14, fig. 4) or a plain hub (2, fig. 4). The adapter plate may be made of metal or a composite material, its thickness preferably being 40-1000 mm. Optionally, the adapter plate has a circular cross-section, i.e. it is shaped like a ring or disc, in which case it may have circumferentially spaced openings in both regions, matching the spacing of bolts (10, fig. 4) in the root and hub interface. T-bolts or bolts mounted in adhesive-bonded bushes may be used to fasten the plate to the root and/or the hub. In addition, adhesive may be used for fixing the plate to the blade root. |
