PNEUMOHYDRAULIC DAMPER Russian patent published in 2004 - IPC

FIELD: mechanical engineering; damping of mechanical oscillations.

SUBSTANCE: proposed pneumohydraulic damper contains housing accommodating movable rod with piston separating hydraulic space in housing from pneumatic space at one side, and piston located in movable rod and separating hydraulic space in movable rod communicating with hydraulic space of housing from above indicated pneumatic space. It contains also adjustable restrictors, seals and pneumatic charging valve. Fixed rod is introduced into damper from side opposite to side of movable rod mounting piston on movable rod is rigidly coupled with fixed rod. Longitudinal channels made in housing walls place hydraulic spaces in communication. Check valves are arranged in longitudinal channels. Adjustable restrictors are installed in said longitudinal channels. Central channel made in fixed rod changes into radial channels from side opposite to side of location of piston.

EFFECT: provision of damping with possibility of accurate adjustment of such parameters as force and speed on rod, separately for pulling in and forcing out, depending on expected movement of damping parts.

4 dwg