The present invention relates to a multi-part track wheel with a wheel tyre, with a wheel rim and with at least two elastic bodies arranged between the wheel tyre and the wheel rim, via which the wheel tyre is supported spring elastically on the wheel rim and which are arranged distributed in the circumferential direction around the rotary axis of the track wheel, wherein the elastic bodies are clamped between an inner circumferential surface of the wheel tyre and an outer circumferential surface of the wheel rim and in this case abut with their outer side assigned to the wheel tyre on the inner circumferential surface of the wheel tyre and with their inner side assigned to the wheel rim on the outer circumferential surface of the wheel rim and an elastic body for use in a track wheel. The track wheel according to the invention designed according to the one-ring concept provides an optimised low spring constant and the elastic body as an essential component for the spring properties allows the manufacture of a one-ring track wheel with optimised usage properties. This is achieved in that the elastic bodies are locked against a movement in the circumferential direction by forming elements provided in each case on the inner circumferential surface of the wheel tyre and/or on the outer circumferential surface of the wheel rim.

A vehicle wheel including a wavelength tube member may include spokes, a cylindrical rim configured to connect both circumferential portions of the spokes, and a wavelength tube member accommodated on the rim between the first and second circumferential portions of the spokes and configured to cancel sound wave generated in a cavity formed between the rim and a tire, wherein the wavelength tube member may include a rim seating portion being in surface-contact with and accommodated on an external surface of the rim; and a plurality of wavelength tube portions formed on the rim seating portion.

A pneumatic tyre comprising an inner surface of the tyre, wherein a sound absorbing device component is connected to the inner surface of the tyre. The sound absorbing device component comprises a panel with a plurality of perforations and two sidewall sections, the sidewall sections being distinct from the panel, wherein the sidewall sections are connected to the inner surface of the tyre and arranged opposite of each other and wherein the panel is borne by the sidewall sections, thereby positioning the panel at a distance from the inner surface of the tyre and defining an inner volume enclosed by the panel, the sidewall sections and the inner surface. Furthermore, ≥95 area-% of all perforations which permit access to the inner volume are located on the panel.

A soundproof wheel includes a soundproofing device which is mounted to an inner peripheral surface of a rim section of the wheel. The soundproofing device is provided with: a fixing ring which is fitted in and fixed to a groove formed in the inner peripheral surface of the rim section; an elastic body section which is adhered to an outer peripheral surface of the fixing ring, is disposed within the groove, and has a plurality of elastic body pieces; and an additional mass section which is adhered to an opposite side of the elastic body section with respect to the fixing ring, is disposed within the groove, and has a plurality of additional mass pieces. The soundproofing device includes a plurality of dynamic vibration absorbers, each having an elastic body piece and an additional mass piece. This soundproof wheel allows for reduction in wheel vibration noise and is highly durable.

A sound attenuation device for vehicle wheels, in particular for wheels of rail vehicles, includes a ring assembly having at least one open first ring and one open second ring, between which a viscoelastic first layer or an open elastic ring is arranged, wherein at least the first ring is clampable in a recess in a wheel body of a wheel having the wheel body, wherein in order to create advantageous construction conditions, a closure piece is connected to the ring assembly, where the closure piece is arranged in an opening between a first end of the ring assembly and a second end of the ring assembly, such that the ring assembly is secured mechanically.

The invention relates to a multi-part railway wheel for a railway vehicle, having a wheel tire, having an inner wheel part, having at least one elastic body arranged between the wheel tire and the inner wheel part, which body acts for electrical insulation, by way of which body the wheel tire is supported on the inner wheel part, and having a current bridge that is mounted on an outside end face of the railway wheel which bridge comprises a first contact element that consists of an electrically conductive material and lies against the wheel tire with a contact surface, a second contact element that consists of an electrically conductive material and lies against the inner wheel part with its contact surface and an electrical conductor that connects the contact elements. The inner wheel part consists of a light-metal material, at least in the region in which the contact element of the current bridge, which is assigned to the inner wheel part, lies against the inner wheel part with its contact surface. In order to prevent the risk of the formation of contact corrosion at a contact location, at which a contact element of the current bridge lies against a section of the inner wheel part that consists of a light-metal material, in the case of such a railway wheel, using simple means, the invention proposes forming the contact surface of the contact element that lies against the inner wheel part on a section of the contact element that consists of corrosion-resistant, electrically conductive steel material.

A noise-absorbing device for a railway vehicle wheel includes: at least one strip extending radially from a connecting end capable of being fastened to the periphery of the wheel, to a free end; and at least one damping mass fastened on a face of the free end of the strip, away from the connecting end. The strip includes at least two metal or composite layers and at least one layer of viscoelastic material gripped between the two or composite metal layers.

A RFID tag unit is attached to a wheelset of a railcar and includes a RFID tag and an attaching member on which the RFID tag is mounted and which is attached to the wheelset. At least a portion of the attaching member which portion faces the RFID tag is made of a non-metal material. The attaching member is interposed between the RFID tag and the wheelset.

A pneumatic tyre comprising an inner surface of the tyre, wherein a sound absorbing device component is connected to the inner surface of the tyre. The sound absorbing device component comprises a panel with a plurality of perforations and two sidewall sections, the sidewall sections being distinct from the panel, wherein the sidewall sections are connected to the inner surface of the tyre and arranged opposite of each other and wherein the panel is borne by the sidewall sections, thereby positioning the panel at a distance from the inner surface of the tyre and defining an inner volume enclosed by the panel, the sidewall sections and the inner surface. Furthermore, 95 area-% of all perforations which permit access to the inner volume are located on the panel.

A vehicle wheel including a wavelength tube member may include spokes, a cylindrical rim configured to connect both circumferential portions of the spokes, and a wavelength tube member accommodated on the rim between the first and second circumferential portions of the spokes and configured to cancel sound wave generated in a cavity formed between the rim and a tire, wherein the wavelength tube member may include a rim seating portion being in surface-contact with and accommodated on an external surface of the rim; and a plurality of wavelength tube portions formed on the rim seating portion.