FLEXIBLE DAMPER Russian patent published in 2000 - IPC

FIELD: mechanical engineering. SUBSTANCE: proposed damper has case accommodating plunger with cavity filled with compressed gas and separated from remaining space of damper by means of floating damper; plunger has inner diaphragm-shaped end with orifice receiving shaped spindle secured in case bottom. Effective space of case as well as part of plunger hollow are filled with viscous compressible quasi- fluid (elastomer); floating piston has two barrels, one inside other; outer flanges of barrels are contacting inner surfaces of plunger hollow; space between barrel flanges is filled with elastomer and isolated from other spaces by means of packings; shell-to-shell clearance is filled with air held at pressure approaching atmospheric value. In addition, plunger diaphragm incorporates check valve installed on line between effective space of case and plunger hollow; check valve is arranged so that damper compression closes it and its reverse travel opens the valve. Check valve may be mounted in diaphragm orifice; it may be made in the form of ball for displacement along damper axis and provided with its displacement limiter. Check valve may be likewise made in the form of plate with central hole and side ducts placed in diaphragm drilling coaxial to its hole and its displacement may be limited by nut turned in diaphragm. Floating-piston travel is limited by stop provided on plunger bottom. Damper is designed to ensure high energy intensity, high static energy characteristics, and high coefficient of irreversible energy absorption. EFFECT: improved reliability, service life, safety, reduced cost. 5 cl, 3 dwg