RAILROAD VEHICLE BRAKE DISC - HIGASHI NIPPON RYOKAKU TETSUDO

Title:

RAILROAD VEHICLE BRAKE DISC

Document Type and Number:

WIPO Patent Application WO/2017/099073

Kind Code:

A1

Abstract:

A railroad vehicle brake disc wherein the amount of air that flows along a disc rear surface is maintained but the noise that arises from the brake disc when a wheel is rotating at high speed is greatly reduced. A railroad vehicle brake disc that has: a disc plate part that has a sliding part on a top surface thereof; a plurality of vertical fins (11a, 11b) that are provided to a rear surface of the disc plate part and that are formed to extend in the radial direction of the disc plate part; and horizontal ribs (13) that are provided between each adjacent pair of vertical fins from among the plurality of vertical fins and that extend in the circumferential direction of the disc plate part. When the disc plate part is fastened to a wheel of a railroad vehicle, flow paths for air are formed between the pairs of fins, and the flow paths for air are narrowed by the horizontal ribs. From a base part to a top part, the horizontal ribs (13) are provided with a gentle slope that is for suppressing turbulence in air flows that pass between the pairs of vertical fins.

Inventors:

SHIRAISHI NOBUO (JP)
WAKABAYASHI YUSUKE (JP)
KURITA TAKESHI (JP)
KATO TAKANORI (JP)
FUJIMOTO TAKAHIRO (JP)
NOGAMI HIROSHI (JP)
SAKAGUCHI ATSUSHI (JP)
ICHIKAWA YUKI (JP)

Application Number:

PCT/JP2016/086223

Publication Date:

June 15, 2017

Filing Date:

December 06, 2016

Export Citation:

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Assignee:

HIGASHI NIPPON RYOKAKU TETSUDO (JP)
NIPPON STEEL & SUMITOMO METAL CORP (JP)

International Classes:

F16D65/12; B61H5/00

Domestic Patent References:

WO2015122148A1

2015-08-20

Foreign References:

JP2007205428A	2007-08-16
JPH08312698A	1996-11-26
JP2006125553A	2006-05-18
JP2007205428A	2007-08-16

Other References: