ROLLING STOCK HYDRAULIC VIBRATION KILLER Russian patent published in 2013 - IPC B61F5/10 F16F9/18 F16F9/34 

FIELD: transport.

SUBSTANCE: invention relates to rolling stock running gear, particularly, to structural elements of spring suspensions, namely, to hydraulic dampers. Proposed device comprises working cylinder with piston and rod, piston and above-piston head ends, reservoir, throttling components, check and safety valves. Piston hollow rod doubles as working fluid reservoir. Piston divides working cylinder into piston and above-piston chambers and comprises valve system. The latter comprises safety valve communicating above-piston chamber with rod inner space, check valve to communicate said inner space with piston chamber, and check valve to communicate piston chamber and above-piston chamber. Common orifice rated to definite hydraulic resistance to working fluid is arranged in safety valve.

EFFECT: simplified design, decreased sizes and weight.

1 dwg