Axle-mounted brake disk for a rail vehicle

An axle-mounted brake disk for a rail vehicle, the brake disk comprising:

• two friction rings arranged parallel to and spaced apart from each other and connected together by a plurality of ribs extending in a direction of a rotation axis of the friction rings,
• wherein at least some of the plurality of ribs-are formed with differing cross-sections,
• wherein at least one cross-section of a first subset of the plurality of ribs, which are configured as supporting elements for transmitting pressure forces, exceeds a predefined minimum cross-section,
• wherein at least one cross-section of a second subset of the plurality of ribs, serving to dissipate thermal energy, is less than the minimum cross-section,
• wherein several of the ribs of the first subset are arranged behind each other in a row along a common axis extending radially from the rotation axis of the friction rings and all of the ribs along the common axis exceed the predefined minimum cross-section, and
• wherein several of the ribs of the second subset are arranged behind each other in a row along a second common axis, which is spaced apart from the several ribs of the first subset, extending radially from the rotation axis of the friction rings and all of the ribs along the second common axis are less than the minimum cross-section,
• wherein the axle-mounted brake disk includes a plurality of radially arranged rows of ribs formed as supporting elements and a plurality of rows of ribs serving for dissipating thermal energy,
• wherein each single radially arranged row of the plurality of rows of ribs formed as supporting elements having a cross-sections that exceed the predefined minimum cross-section is separated by only a single radially arranged row of the ribs serving for dissipating thermal energy having cross-sections that are less than the predefined minimum cross-section so that each single radially arranged row of ribs formed as supporting elements alternates with each single row of ribs for dissipating thermal energy in a circumferential direction.