BLADE ROOT SPRING INSERTION TOOL AND BLADE ROOT SPRING INSERTION METHOD

摘要

[Problem] To provide a blade root spring insertion tool and a blade root spring insertion method with which a blade root spring can be inserted into a blade groove efficiently. [Solution] The present invention is used to insert a blade root spring into a gap between the bottom face of a blade groove formed in a rotor disk of a rotating electric machine and the blade root part of a moving blade engaged in the blade groove. The blade root spring has a moving blade contact surface that contacts the blade root part, and a rotor contact surface that contacts the bottom face of the blade groove. The blade root spring insertion tool is equipped with a first contact surface that abuts against the moving blade contact surface of the blade root spring, and a second contact surface that is provided opposing the first contact surface and abuts against the rotor contact surface of the blade root spring. The blade root spring insertion tool is constructed so as to press against the blade root spring by means of the first contact surface and the second contact surface, and thus to compress the blade root spring such that the height of the blade root spring is less than its natural height.