Aeronautical noise reduction members, railroad vehicle brake disc units, railroad vehicle disc brakes, railroad vehicle wheels and railroad vehicles

摘要

The aerodynamic noise reducing member 30 has a plate-shaped support portion 32 sandwiched between a plurality of fins 24 and 26 of the brake disc 20 and a rotating member 102 of a railway vehicle, and a plurality of projecting portions 34 protruding from the support portion 32. doing. In a state where the support portion 32 is sandwiched between the plurality of fins 24 and 26 and the rotating member 102, the plurality of projecting portions 34 are between the fastening fins 24 and the locking fins 26 which are adjacent to each other in the circumferential direction of the brake disc 20, respectively. It is provided so as to block a part of.