INERTIAL VIBRATION ISOLATOR Russian patent published in 2017 - IPC F16F7/116 F16F7/01 F16F13/02 

FIELD: machine engineering.

SUBSTANCE: vibration isolator comprises a resilient element interposed between the vibration-insulated object and a base. On the base, there is a support of the vibration isolator body for fixing the screw. A nut is mated with the screw. Additional inertial mass is mounted on the free end of screw. The rod mechanism connects the vibration-insulating object with the nut. Resilient element is made in form of cylindrical helical spring and consists of two portions with mutually opposite 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 the 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 screw spring, which enclosed the tube of damping material, are filled with crumb of friction material.

EFFECT: increased efficiency of vibration damping due to obtaining collapses in amplitude-frequency property at low frequencies and increase of damping.

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