Component e.g. axial flow fan blade, fastening device for e.g. steam turbine, has screw nut in recess of support body, and screw in feed-through of nut, positioned such that screw contacts shaft extension that contacts recess base

摘要

The device has a shaft (3) with a shaft extension (7) at an end, and a screw nut (5) with a central feed-through (9) for feed-through of the shaft, an external thread (11), and a feed-through (13) with an inner thread (17). A screw (15) is guided through the feed-through (13). A support body (19) has a recess (21) with an inner thread (18) corresponding to the thread (11). The nut is positioned in the recess and the screw is positioned in the feed-through (13), such that the screw contacts the extension and the extension contacts a base of the recess.