Spring suspension device
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United States of America Patent
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N/A
Issued Date -
Jun 12, 2003
app pub date -
Dec 11, 2002
filing date -
Dec 11, 2001
priority date (Note) -
Abandoned
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Abstract
A spring suspension device is provided for rail vehicles which is arranged in the region of the wheels in the form of a primary spring suspension between the wheel axle and a frame and/or in the form of a secondary spring suspension between the frame and the vehicle box body, wherein the spring suspension device includes at least one main spring and at least one auxiliary spring device assigned to the main spring, and wherein the at least one main spring comprises a hydropneumatic spring arranged in series with the auxiliary spring device. The auxiliary spring device is, for example, realized in the form of a coil spring. In a spring suspension system for a rail vehicle in which several such spring suspension devices are used, two or more hydraulic units of the hydropneumatic springs may be connected to a common gas reservoir by means of a synchronization unit.
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