| 摘要 |
PROBLEM TO BE SOLVED: To reduce weight by using a specific strength material in a swing wing of a compressor. SOLUTION: A spindle 9 of a swing wing 10 is inserted in a support cylinder 12 of a compressor casing 11 and rotatably supported thereon. The spindle 9 is rotated via an operation lever 16 and to regulate the angle of the variable blade 10 so as to form a support device for a variable blade. The head part of the spindle 9 and the base end part of an operation lever 16 are coupled together through a taper fitting part 19 consisting of a taper protrusion 19a and a taper groove 19b, which fit with each other from a direction orthogonal to a spindle axis 0. A sleeve 21 for fixing is threadedly engaged with the tip part of the support cylinder 12, a fixing force is exerted on the fitting surface of the taper fitting part 19, and the spindle 9 is supported on the operation lever 16.
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