brake pad for rail vehicle, and rail disc brake that uses the same

摘要

This undercarriage brake lining (10) includes first and second friction elements (11, 12) and a substrate (20). the friction element (11) is elastically fixed to the substrate (20) with a spring element disposed between the friction element (11) and the substrate (20). the friction element (12) is fixed to the substrate (20). there are one or more friction elements (11) having their center present in a range in which the distance from the axis center is {r1 + (r2? r1) / 3} to {r1 + 2 (r2? r1) / 3} where r1 is the shortest distance between the friction elements (11, 12) and the axle center of the railway vehicle, and r2 is the largest distance between the friction elements (11, 12) and the center of the axle. the total t1 of the friction element sliding surface area (11) and the total t2 of the friction element sliding surface area (12) satisfy the ratio 2/25 = t2 / (t1 + t2). Good contact is maintained between the brake disc and the friction elements (11, 12) even during sudden braking at a high speed.