PNEUMATIC MACHINE FOR LONG RODS DRIVING INTO THE GROUND Russian patent published in 2019 - IPC E02D7/10 

FIELD: mining.

SUBSTANCE: invention relates to the mining and construction equipment, namely to pneumatic impact machines, intended for driving long rods into the ground. Machine comprises coaxially placed in the housing guide with a through axial channel for the long rod accommodation, a based thereon stepped striker with front and rear steps on its outer side, of which the front stage is equipped with the annular elastic valve, adapted to interact with the body inner surface, permanently connected to the mainline working stroke chamber, permanently connected to the atmosphere exhaust chamber, reverse stroke chamber with at least one supply channel on the guide outer side, made with the possibility of its overlapping with striker, anvil with tapered cams for the long rod gripping. Guide outer surface, on which the striker is based, has the same diameter over the entire length. Housing is equipped with the elastomeric ring, adapted to interact with the striker rear stage outer surface and placed in the housing with a radial clearance, exceeding the radial clearance between the striker and the housing at the elastomeric ring location point.

EFFECT: enabling increase in the working capacity and profitability life span.

1 cl, 2 dwg