PNEUMATIC HAMMER Russian patent published in 2023 - IPC B25D9/04 E21C37/24 

FIELD: pneumatic impact machines.

SUBSTANCE: invention relates to pneumatic impact machines and can be used in construction, mining and mechanical engineering. The pneumatic hammer contains a cylindrical body, a working tool held by a latch relative to the cylindrical body, a handle with an inlet device, a partition with an inlet throttle, an outlet channel and an axial hole in which a tube with a longitudinal outlet channel and a radial outlet channel extending into its side is installed and fixed. surface, an annular outlet chamber with an outlet formed by a partition, a cylindrical body and a handle body, an antechamber formed by a handle body and a partition and communicated through an air supply channel with a compressed air network, a striker with a through axial channel for passing the said tube, dividing the cavity of the cylindrical body into a working stroke chamber on the side of the partition, constantly communicated with the pre-chamber by means of an inlet throttle in the partition, and an idle chamber on the side of the working tool, periodically communicated by means of a radial and longitudinal outlet th channels in the tube and the outlet channel in the partition with access to the annular outlet chamber and through the outlet hole in the handle body into the atmospheric chamber formed by the handle body and the air baffle ring, a recess in the cylindrical body from the side of the idle chamber. At the same time, on the side surface of the inner cavity of the cylindrical body, a drainage longitudinal channel-groove is made with the formation of a cross-section in the form of a rectangle or square with constant communication between the working stroke chamber and the idle chamber.

EFFECT: reducing the air consumption consumed from the network, increasing the impact energy transmitted to the working tool, as well as increasing the resource of the hammer.

1 cl, 1 dwg