HYDRAULIC BLADE SHOCK-ABSORBER Russian patent published in 2010 - IPC F16F9/10 

FIELD: machine building.

SUBSTANCE: shock-absorber consists of case with filling orifice, of cover, of lever, of partition, of two couples of working chambers, of compensation chamber and of cavity between end surface of blade and bottom of shock-absorber case. A blade with two slots and a recess on the side of a spline part is attached on splines of the lever. Bronze blocks are inserted in the slots. A bronze bushing pressed into the case of the chick absorber is conjugated with the recess. A sealing element made in form of a double-step bushing is secured on the blade from the side of its spline part. The partition has two lugs each having two orifices, wherein valve devices are arranged. A circular groove is made on internal surface of one of orifices. An auxiliary valve device positioned in this orifice corresponds to two stepped cylinder cartridges coaxially installed one inside the other. The external cartridge has through radial holes made along perimetre of its smaller step. Each cartridge has peripheral holes in a bottom part. A rod passes through central axial holes of cartridges; a spring loaded end of the rod is positioned in the working chamber of excess pressure at reverse stroke of the lever. Shut off elements are installed on the rod. Working valve device is installed in another orifice of the partition lug.

EFFECT: raised efficiency of shock-absorber operation.

7 dwg