Knorr-Bremse Systeme Fur Schienenfahrzeuge Gmbh

Ralf Oberthür

Martin Lehmair

Martin Waldstein

Winfried Hommen

Reinhard Loebner

Henry Kirsch

Eduard Nies

Winfred Hommen

A device for the secondary suspension of a body of a rail vehicle, the device comprising a spring element which is between the body and a bogie and to ensure at least one raised transport level for the body during the journey of the rail vehicle. The spring element can be compressed by a traction cylinder when the rail vehicle is stationary, in order to adjust a sunken platform level for the body, which is arranged below the raised driving level. The traction cylinder is provided with means for mechanically decoupling the advancing movement of the body from a pressure reduction in the pressure chamber of the traction cylinder.

Device for the secondary suspension of a car body in a rail vehicle

A secondary suspension for a rail vehicle includes a superstructure, a bogie and a steel spring arranged between the superstructure and the bogie. The steel spring ensures at least one raised traveling level for the superstructure when the rail vehicle is traveling. Further included is a tension cylinder. When the rail vehicle is stopped, the steel spring is compressed by the tension cylinder to adjust the superstructure to a lowered station platform level below the at least one traveling level.

System for the secondary suspension of a superstructure of a rail vehicle having a passive spring element

System for the secondary suspension of a superstructure () of a rail vehicle, having a hydropneumatic spring unit (), with an assigned suspension accumulator () as an active spring element, placed between the superstructure () and a bogie () arranged below it, which active spring element ensures at least one raised travelling level (N) for the superstructure during the travel of the rail vehicle, in which case, by way of the hydropneumatic spring unit (), by means of a level control, in addition to the raised travelling level (N), a lowered station platform level (N) for the superstructure () can also be adjusted, the suspension accumulator () being blockable when the rail vehicle is stopped in order to relieve the level control during a change of load, and in that, for an emergency operation caused by a pressure drop, additionally at least one emergency spring cylinder () is provided which, in the event of a pressure failure, by means of an independent moving-out, ensures an emergency spring level (N) situated between the station platform level (N) and the travelling level (N).

System for the secondary suspension of a superstructure of a rail vehicle having an active spring element

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Munich, Germany

Ralf Oberthür