DYNAMIC VIBRATION DAMPER Russian patent published in 2017 - IPC F16F7/104 F16F3/04 

FIELD: machine engineering.

SUBSTANCE: dynamic vibration damper contains a spherical shell placed in the damping body cavity made in the form of parallelepiped. At least one ball is placed in the spherical shell. Between the walls of the damping body and the spherical shell there are elastic elements installed in the equatorial region of the spherical shell. The elastic elements are made in the form of a spring with an integrated damper. The spring is made as a cylindrical screw and contains two parts with opposite directed ends. The first spring part has rectangular section turns with rounded edges, and the second part is made hollow. The opposite directed end of the first part is located in the cavity of the second part. The segmental profile gaps of the contacting spring parts are filled with antifriction lubricant. The packing seal is mounted at the end of the second spring part to prevent lubricant leakage. The first part of the screw spring is enclosed by the tube of a damping material. The gaps in the first part of the helical spring which is covered by the tube of damping material, are filled with a crumble of friction material.

EFFECT: increased efficiency of vibration damping by reducing side forces on the damping body by increasing damping in the system.

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