To provide a damping device capable of being inserted to a narrow clearance, extending the contact area and enhancing the damping effect by providing a plate damper member on the reverse side of both platforms of mutually adjacent moving blades so as to be overlapped and extended over the both.
A damper member 15 formed by bending a metal plate by press work and punching it is provided on the reverse side 17 of both platforms 8 of mutually adjacent moving blades 2 so as to be overlapped and extended over the both. Since a slight clearance is present between a groove 3 and a planted part 5, the moving blade 2 is influenced by the centrifugal force based on the rotation of a rotor 1 and gas pressure and vibrated with the planted part 5 as a fulcrum. Since the platform 8 rubs with the damper member 15 according to this vibration, the vibration of the moving blade 2 is damped by the friction resistance at this time. Since the common damper 15 rubs with the platforms 8 of the mutually adjacent moving blades 2, the vibrations of the individual moving blades 2 mutually interfere through the damper member 15 to effectively damp the moving blades 2.
HAZAMA TAKAHIRO
KOBAYASHI MASAO
ONOZATO HISASHI
Next Patent: ARRANGING METHOD FOR FLUID STATE AND HARDENABLE MATERIAL IN CAVITY PART