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US 7,625,030 B2Granted
Reduction of torsional vibration in rail vehicle wheel sets
AssigneeBombardier Transportation GmbH
InventorsGuido Bieker, Heinz Dieter Dörner
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AssigneeBombardier Transportation GmbH
InventorsGuido Bieker, Heinz Dieter Dörner
Estimating the term…
In order to reduce torsional vibrations and wheel slip in a wheel set for a rail vehicle the wheel set comprising a pair of wheels connected by an axle is provided with a vibration absorbing device comprising a mass, resiliently mounted on the wheel set and adapted to oscillate at the resonant frequency of torsional vibrations of the wheel/axle system. A method of preventing or reducing torsional vibrations in a wheel set of a rail vehicle is also disclosed, the method comprising determining the resonant frequency of torsional vibrations of the wheel/axle system and resiliently mounting a vibration absorbing device in the form of a mass, on the wheel set, the mass and its resilient mounting being selected to oscillate at or near that resonant frequency.
A wheel set for a rail vehicle comprising a pair of wheels connected by an axle and a vibration absorbing device comprising a mass resiliently mounted for circumferential oscillatory movement with respect to the wheel set and a spring element acting circumferentially between the mass and the wheel set, such that the mass can oscillate at the resonant frequency of torsional vibrations of the wheel/axle system and wherein damping of the oscillatory movement is provided by a friction determining surface between mutually contacting surfaces of the wheel set and the mass.
A method of preventing or reducing torsional vibrations in a wheel set of a rail vehicle comprising a pair of wheels connected by an axle, the method comprising determining the resonant frequency of torsional vibrations of the wheel/axle system and resiliently mounting a mass on the wheel set using a spring element acting circumferentially between the wheel set and the mass and a friction determining surface between mutually contacting surfaces of the wheel set and the mass, the mass and its resilient mounting being selected to oscillate at or near that resonant frequency.
A vibration absorbing device for reducing torsional vibrations in a rail vehicle wheel set comprising a pair of wheels connected by an axle, the vibration absorbing device comprising:
Dependencies are inferred from the claim text.