Soundproof wheel for railway vehicle

A soundproof wheel for a railway vehicle, comprising

• a soundproofing device mounted onto an inner peripheral surface of a rim section of the wheel,
• the soundproofing device including:
• a fixing ring, at least an outer peripheral portion of the fixing ring being fitted in a groove, the groove being formed in the inner peripheral surface of the rim section and opened toward a central axis of the wheel, the fixing ring being fixed to the rim section;
• an elastic body section which is adhered to an outer peripheral surface of the fixing ring along a circumferential direction of the fixing ring, and is disposed in the groove;
• and
• an additional mass section which is adhered to an opposite side of the elastic body section with respect to the fixing ring, and is disposed in the groove, wherein
• the elastic body section includes a plurality of elastic body pieces disposed along the circumferential direction of the fixing ring,
• the additional mass section includes a plurality of additional mass pieces which are spaced apart from each other in the circumferential direction of the fixing ring, each additional mass piece being adhered to any one of the plurality of elastic body pieces,
• the wheel has multiple natural frequencies corresponding to multiple natural vibration modes,
• the soundproofing device includes a plurality of dynamic vibration absorbers, each dynamic vibration absorber having the elastic body piece, and the additional mass piece adhered to the elastic body piece, and
• at least one dynamic vibration absorber of the plurality of dynamic vibration absorbers has a resonance frequency different from the resonance frequencies of the other dynamic vibration absorbers, and any of the resonance frequencies of the plurality of dynamic vibration absorbers corresponds to any of the multiple natural frequencies.