COMBINED SPRING BY KOCHEV Russian patent published in 2017 - IPC F16F3/10 F16F7/01 F16F1/362 

FIELD: machine engineering.

SUBSTANCE: spring is cylindrical and consists of two parts with oppositely directed ends. There are supporting rings on the spring supporting coils. 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 helical spring which is covered by the tube of damping material, are filled with a crumble of friction material. There vibration damping plates consisting of alternating layers of elastic and vibration damping materials mounted on the supporting rings. The lower vibration damping plate is mounted on the washer mesh damper through a flexible gasket made of polyurethane.

EFFECT: increased efficiency of vibration isolation in resonance mode.

3 dwg