Railway wheel vibration damping device
AssigneeFried. Krupp Huttenwerke AG
InventorErwin Raquet
Life of this patent
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Abstract
A vibration damping device for a body resonant at two frequencies, is formed by a plate which can be connected to the body transversely with respect to its vibration direction. A post extends from the plate and mounts one end of an elastically flexible tongue which extends from the post substantially parallel to the plate so as to form a space between the tongue and plate. A weight is fixed to the other end of the tongue and vibration damping material is positioned in the space. The tongue and weight form a system resonant at both of the bodies' resonant frequencies, the tongue's energy being absorbed by the damping material.
Claims13
A vibration damping device for a vibrating body for damping vibrations, comprising:
- a plate adapted to be connected to said vibrating body said plate lying in a plane orthogonal to vibration direction with respect to vibrating direction of said body;
- an elastically flexible tongue member extending transversely to said plate, and means fixing a portion thereof to said plate and spaced therefrom to form a space between said tongue member and said plate;
- a vibration absorbing material in said space;
- and
- weight means fixed to a free end portion of said tongue member whereby said tongue member is resonant to two different frequencies.
In a vibration damping device for attachment to a vibrating body of a railroad wheel, said railroad wheel having a metal rim, a web, and an elastomeric material between said rim and said web, said rim being said vibratory body of said railroad wheel, the improvement comprising:
- a plate, an elastically flexible tongue member with weight means at a free end thereof and spaced from said plate, a vibration absorbing material in a free space between said plate and said elastically flexible tongue member, and means fixing all of the aforesaid together with said flexible tongue member forming and said weight means forming a vibrating member to dampen two frequencies of vibration of said rim;
- and
- means coupling said plate, said elastically flexible tongue member, said weight means and said fixing means to said metal rim, said fixing means being centrally mounted and said coupling means fixedly coupling said vibrations damping device to said rim at said fixing means of said vibration damping device to permit vibration of said tongue member on both sides of said coupling means, said coupling means extending in a direction transversely with respect to the vibrating direction of said rim.
Dependencies are inferred from the claim text.