KOCHETOV SPRING VIBRATION ISOLATOR WITH DAMPER Russian patent published in 2017 - IPC F16F3/10 F16F15/04 

FIELD: machine engineering.

SUBSTANCE: vibration isolator contains a base and a lid, between which cylindrical helical springs with dry friction damping are located and are connected to them through pins. The dry friction damper consists of a lower bush, connected with a base, and coaxial with it upper barrel, connected with the cover. Inside the damper there is a cylindrical helical spring, and the cavity is filled with an elastic damping element consisting of a mesh frame filled with polyurethane. The spring comprises a casing made from a spiral hollow resilient steel tube, coated with polyurethane. An additional resilient steel tube is installed inside the casing coaxially with a gap. A friction element, having higher thermal expansion coefficient as compared to steel, is placed in the gap between the tubes. The surfaces of the casing and the additional resilient steel tube touch the surfaces of the friction element. A screw solid resilient pin is set coaxially to the casing. The friction element is in the form of a granular backfill made of sintered copper-based friction material.

EFFECT: increase the efficiency of vibration isolation in resonance mode.

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