Daimler-benz Aerospace Ag

Thomas Mayer

Klaus Zimmermann

Klaus Ermert

Josef Bartl

A muffler for structure-borne noise of running wheels of different diameters and/or different frequency spectrums of structure-borne sound vibrations has vibration absorbing elements in the form of members which are arranged next to one another in the circumferential direction, forming a circular disk, and are each connected on the base surface in a force-locking manner with the running wheel. The muffler for structure-borne noise consists of at least a first type of vibration absorbing elements which is always the same for a larger range of running wheel diameters, and at least a second type of vibration absorbing elements which is adapted to the respective running wheel diameter and frequency spectrum of structure-borne sound vibrations.

Muffler for structure-borne noise of running wheels

The vibration absorbers have mounts for radial fastening of the vibration absorber to an inside surface of a wheel rim to be used on rails. A plurality of mounts are uniformly distributed over the circumference of the inside surface and are each coupleable to the wheel rim in an acoustically good conducting manner against a surface that matches the radius of curvature of the inside surface. On each mount at least one vibration absorber consisting of a sequence, running in the radial direction, of metal and plastic plates can be coupled in an acoustically effective manner by means of a coupling surface. The vibration absorbers and mount are releasably connected with one another and have a coupling surface that is always the same and is independent of the radius of curvature of the inside surface of the wheel rim.

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Sindelfingen, Germany

Thomas Mayer