HYDRAULIC DAMPING DOUBLE-ACTING DEVICE Russian patent published in 2012 - IPC F16F9/20 

FIELD: machine building.

SUBSTANCE: invention refers to machine-building industry. Device includes a housing filled with working fluid, piston dividing the housing into two cavities and two stocks connected to the piston. Three-stage axial cavity consisting of one intermediate stage of larger diameter and two extreme stages of smaller diameter is made in bodies of piston and stocks. Spring-loaded plunger is installed in the above cavity coaxially to piston and stocks. Besides, the above plunger is provided with one middle belt and two extreme belts located in one intermediate stage and two extreme stages of axial cavity. Extreme stages of axial cavity are interconnected with cavities of housing by means of throttling openings made in bodies of stocks, and axial channels with orifice plates, which are provided in the piston.

EFFECT: achieving smooth braking and accurate stop of movable elements for various weights and movement speeds in two opposite directions.

1 dwg