Vane adjustment mechanism for a turbine and assembling method therefor

摘要

A vane adjustment mechanism comprising an inner base unit (2A) having first and second flanges, and an outer base unit (2B) into which the inner base unit is forced. A plurality of U-shaped indentations (2c) spaced at regular angular intervals on the inside surface of the inner or outer base unit from the first flange (2a) to the second flange (2b), so that the U-shaped indentations form the vane shaft holes to accomodate the vane lever units when the inner base unit is forced into the outer base unit to block the U-shaped indentations in such a way that the vane lever units are free to rotate. The link plate (3A) has U-shaped cutting or concaved indentations, in which protrusions of the vane lever unit engage, all along the circumferential edge of the link plate (4). <IMAGE> <IMAGE>