| 摘要 |
PROBLEM TO BE SOLVED: To prevent a flexural deformation of a rotor disk during operation to improve the fatigue strength of a structure for attaching a spindle bolt of a gas turbine compressor. SOLUTION: A number of disks 82 are arranged between a front shaft-end part 2 and a rear shaft-end part 4 in the axial direction making torque arms come into contact with each other, and are tightened by means of a spindle bolt 1 and a nut 3. The disks 10, 11 corresponding to two stages are integrally formed at a rear side of the front shaft-end part 2 so as to have a recess 13 between two disks. Such a structure enables prevention of a disk-like deformation of the disks 10, 11 and also the improved stiffness of the attachment structure at both ends of the spindle bolt 1. Consequently, a flexural deformation of the bolt 1 during rotation is prevented, and its fatigue strength is enhanced. COPYRIGHT: (C)2009,JPO&INPIT
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