Patent ID: 8684144

Claim:
A shaft brake disk for a rail vehicle, the disk comprising: a clamping ring; and a friction ring including connecting flanges provided on an inner circumference of the friction ring, the friction ring being fastened to a hub by bolts, which are guided through the clamping ring, wherein the clamping ring bears against the connecting flanges provided on the inner circumference of the friction ring to provide frictional bearing contact there between, wherein the clamping ring provides an abutting support for the bolts, wherein the clamping ring and the hub interlock positively with one another using a plurality of interlocking pairs of parts, a first part of the interlocking pair corresponding to the clamping ring and a second part of each interlocking pair corresponding to the hub, and wherein braking torques are transmitted to the hub through the frictional bearing contact of the clamping ring against the friction ring, wherein the interlocking pairs are distributed at a same angular interval from each other so as to provide a uniform transmission of braking torque from the friction ring to the hub, and wherein the positive interlock between the clamping ring and the hub is formed circumferentially and radially so as to reliably center the clamping ring even if the friction ring, due to a thermally induced radial expansion, is incapable of affording radial support for the clamping ring, wherein a resulting torsionally fixed connection of the clamping ring to the hub transmits braking torques to the hub through a frictional bearing contact of the clamping ring against the friction ring, wherein the positive interlock between the clamping ring and the hub protects against torsion between the hub and the friction ring without the use of hub locking elements configured to engage the hub and the friction ring, and wherein the plurality of interlocking pairs of parts includes at least three pairs arranged at the same angular interval from one another to achieve centering of the clamping ring in any operating state and uniform transmission of braking torque from the friction ring to the hub through only the frictional bearing contact of the clamping ring against the friction ring.