HAMMER Russian patent published in 2020 - IPC B21J7/22 E21B1/12 

FIELD: machine building.

SUBSTANCE: invention relates to machine building and can be used in construction for driving piles and driving wells, as well as for cleaning bins and cars. Hammer comprises housing accommodating air receiver connected with compressed air source, as well as armature and armature of electromagnet. Core is made in the form of shell from diamagnetic material, in which there are electric coils and powder from electrical steel. Anchor is made in the form of shell from diamagnetic material with powder from electrotechnical steel and with sealing elements on external surface. Anchor is installed with formation between its shell and shell core volume connected to receiver. Anchor moves in case until it contacts with core under action of magnetic force and in reverse direction before collision with impact plate under action of air pressure in receiver and own weight.

EFFECT: result is increased frequency of slaps.

1 cl, 2 dwg