Abstract: An adapter of a brake system includes a body that extends around a portion of an axle of a vehicle system. The body may include an interior portion that is positioned between a center passage of the body and an exterior portion of the body in a radial direction away from the center passage. A hub coupling feature is positioned on the interior portion of the body and may be coupled with a portion of a wheel hub of the vehicle system. A brake disc coupling feature is positioned on the exterior portion of the body and may be coupled with a portion of a brake disc assembly. The wheel hub and the brake disc assembly are incompatible such that the wheel hub is prohibited from being directly coupled with the brake disc assembly.

Abstract: A brake assembly is provided that may include a first friction ring having a plurality of mounting assemblies spaced around the first friction ring and configured to secure the first friction ring to a web of a wheel. At least one of the plurality of mounting assemblies of the first friction ring may include a first arcuate body surrounding a first opening. The brake assembly may also include a second friction ring having a plurality of mounting assemblies spaced around the second friction ring and configured to secure the second friction ring to the web of the wheel. The brake assembly may also include a flexible fastener disposed through the first opening and second opening and configured to be disposed through the web of the wheel to secure the web of the wheel between the first arcuate body and the second arcuate body.

Abstract: A pad for disc brakes for railway vehicles includes a base plate, a plurality of friction elements fixed to the base plate, and a plurality of spacers, each of which is mounted between the base plate and a respective friction element. At least one fixing hole is obtained in each one of the spacers, which is engaged by a respective rivet to lock the friction element to the base plate. Each one of the spacers includes a plurality of metal plaques, each having a fixing hole obtained in the plaque. The metal plaques are stacked on top of one another so that the respective fixing holes coincide.

Abstract: A disc brake for railway vehicles comprising a pad and a disc on which the pad acts. The pad comprises a base plate and a plurality of friction elements fixed to the base plate. The friction elements comprise first friction elements made with a first friction material and second friction elements made with a second friction material. The first friction material has a compressibility modulus greater than that of the second friction material by a value greater than or equal to 1 MPa. The first friction elements are in a higher number than the second friction elements. A respective elastic element is interposed between each of the first friction elements and the base plate, whereas a respective rigid spacer is interposed between each of at least part of the second friction elements and the base plate.

Abstract: A braking assembly can include a brake disc that may have a first segment and a second segment arranged to form a portion of a friction ring. The assembly can also include a fastening assembly that can include a first bracket that may have a first face configured to contact the wheel web and a second face opposite to the first face. The fastening assembly may also include a fastening device with a sliding pin disposed around a shaft. The first bracket may be disposed around the sliding pin and secured between the wheel web and a first component of the fastening device. The shaft may be disposed through the wheel web and the first bracket. The first component can contact the second face of the first bracket and may compress the first bracket against the wheel web to secure the first segment and the second segment to the wheel.

Abstract: A disc/brake friction torque for railway vehicles consisting of at least one pad comprising at least one friction element and a disc. The friction element is made of a sintered material comprising copper, iron, graphite, 0.02 to 1.5% by weight of molybdenum, 1 to 3% by weight of chrome and a porosity ranging from 20 to 35%; and the disc is made of cast iron comprising 0.05 to 2% by weight of chrome, 0.05 to 2% by weight of molybdenum, 0.1 to 2% by weight of nickel.

Abstract: An adapter of a brake system includes a body that extends around a portion of an axle of a vehicle system. The body may include an interior portion that is positioned between a center passage of the body and an exterior portion of the body in a radial direction away from the center passage. A hub coupling feature is positioned on the interior portion of the body and may be coupled with a portion of a wheel hub of the vehicle system. A brake disc coupling feature is positioned on the exterior portion of the body and may be coupled with a portion of a brake disc assembly. The wheel hub and the brake disc assembly are incompatible such that the wheel hub is prohibited from being directly coupled with the brake disc assembly.

Abstract: A pad for disc brakes for railway vehicles comprising a base plate (2), a plurality of friction elements fixed to the base plate and a plurality of spacers, each of which is mounted between the base plate and a respective friction element. In each one of the spacers at least one fixing hole is obtained, which is engaged by a respective rivet suited to lock the friction element to the base plate. Each one of the spacers consists of a plurality of metal plaques, each having a fixing hole obtained in it. The metal plaques are stacked on top of one another so that the respective fixing holes coincide.

Abstract: A brake disc configured to control airflow through portions of a brake disc assembly includes a brake disc, at least one airflow restrictor, and an actuator. The at least one airflow restrictor includes at least one gate member configured to move between a closed position and an open position. In the closed position, the at least one gate member at least partially reduces airflow between a circumferential inner edge and a circumferential outer edge of the brake disc. In the open position, the at least one gate member is positioned to permit increased airflow between the circumferential inner edge and the circumferential outer edge of the brake disc, relative to when the at least one gate member is in the closed position. The actuator is coupled to the at least one airflow restrictor and configured to move the restrictor between the open position and the closed position.

Abstract: A brake assembly is provided that may include a first friction ring having a plurality of mounting assemblies spaced around the first friction ring and configured to secure the first friction ring to a web of a wheel. At least one of the plurality of mounting assemblies of the first friction ring may include a first arcuate body surrounding a first opening. The brake assembly may also include a second friction ring having a plurality of mounting assemblies spaced around the second friction ring and configured to secure the second friction ring to the web of the wheel.

Abstract: A disc/brake friction torque for railway vehicles consisting of at least one pad comprising at least one friction element and a disc. The friction element is made of a sintered material comprising copper, iron, graphite, 0.02 to 1.5% by weight of molybdenum, 1 to 3% by weight of chrome and a porosity ranging from 20 to 35%; and the disc is made of cast iron comprising 0.05 to 2% by weight of chrome, 0.05 to 2% by weight of molybdenum, 0.1 to 2% by weight of nickel.

Abstract: A friction ring configured to be fixed to a hub at one or more fixation points is provided. The friction ring includes a ring shaped body; an outer surface configured to be contacted by a brake mechanism; an inner surface configured to contact a portion of a hub or axle to impart a braking force thereto; at least one through-hole for receiving a fastener for fixing the friction ring to the hub or axle; and at least two protrusions extending from the inner surface of the friction ring forming a channel. A cross-sectional area of an inflow portion of the channel is smaller than a cross-sectional area of an outflow portion of the channel. A brake assembly including a hub and the fixation ring is also provided.

Abstract: A friction ring configured to be fixed to a hub at one or more fixation points is provided. The friction ring includes a ring shaped body; an outer surface configured to be contacted by a brake mechanism; an inner surface configured to contact a portion of a hub or axle to impart a braking force thereto; at least one through-hole for receiving a fastener for fixing the friction ring to the hub or axle; and at least two protrusions extending from the inner surface of the friction ring forming a channel. A cross-sectional area of an inflow portion of the channel is smaller than a cross-sectional area of an outflow portion of the channel. A brake assembly including a hub and the fixation ring is also provided.

Abstract: A friction ring configured to be fixed to a hub at one or more fixation points is provided. The friction ring includes a ring shaped body; an outer surface configured to be contacted by a brake mechanism; an inner surface configured to contact a portion of a hub or axle to impart a braking force thereto; at least one through-hole for receiving a fastener for fixing the friction ring to the hub or axle; and at least two protrusions extending from the inner surface of the friction ring forming a channel. A cross-sectional area of an inflow portion of the channel is smaller than a cross-sectional area of an outflow portion of the channel. A brake assembly including a hub and the fixation ring is also provided.

Abstract: A brake disc for providing a braking surface on a rotating body, such as a railway wheel is provided. The brake disc includes a plurality of arcuate segments (126) arranged to form a ring and a plurality of joining elements (38) for connecting the segments to adjacent segments. Each segment includes: an inner side configured to contact a surface of a wheel; an outer side having a braking surface for contacting a braking mechanism; at least one socket (140) on each radial end (142) of the segment (126) for receiving one of the plurality of joining elements (38); and a groove on the inner side of the segment configured to receive a coupling member to form a pivot joint (58) for positioning the segment (126) on the surface of the wheel.

Abstract: A brake disc for providing a braking surface on a rotating body, such as a railway wheel is provided. The brake disc includes a plurality of arcuate segments (126) arranged to form a ring and a plurality of joining elements (38) for connecting the segments to adjacent segments. Each segment includes: an inner side configured to contact a surface of a wheel; an outer side having a braking surface for contacting a braking mechanism; at least one socket (140) on each radial end (142) of the segment (126) for receiving one of the plurality of joining elements (38); and a groove on the inner side of the segment configured to receive a coupling member to form a pivot joint (58) for positioning the segment (126) on the surface of the wheel.