BLADE ROOT SPRING INSERTION JIG AND INSERTION METHOD OF BLADE ROOT SPRING

摘要

A blade root spring insertion jig and a blade root spring insertion method are provided for inserting a blade root spring into a gap between a bottom face of a blade groove formed in a rotor disk of a rotary machine and a blade root part of a blade which engages with the blade groove. The blade root spring has a blade contact face contacting the blade root part and a rotor contact face contacting the bottom face of the blade groove. The blade root spring insertion jig is provided with a first abutment face contacting a blade contact face side of the blade root spring and a second abutment face opposing the first abutment face and contacting a rotor contact face side of the blade root spring, and is configured so that the first abutment face and the second abutment face press the blade root spring so that the blade root spring is compressed to a height smaller than a natural height of the blade root spring.