HYDRAULIC HAMMER Russian patent published in 2022 - IPC E21C37/00 E02F5/30 B25D9/04 

FIELD: building.

SUBSTANCE: invention relates to the mining and building industries, in particular, to hydraulic percussive mechanisms, and is intended for use as removable equipment for road building machines (excavator attachment) for destroying strong rocks, road surfaces, concrete structures, and for other similar works. The hydraulic hammer comprises a percussive mechanism, and an axle box wherein the working tool is placed. In the area of the axle box, the working tool comprises a hole, elongated in the longitudinal direction of the working tool, with rounded edges, and is made rectangular in cross-section, wherein the size of the cross-section in the longitudinal direction is greater than in the transverse direction; two frontal flat inserts and two lateral flat inserts, placed between the axle box and the working tool; and a locking pin mounted in the holes on the transverse axle of the axle box and passing through said hole in the working tool in the transverse direction of the cross-section thereof.

EFFECT: increase in the reliability/durability of the apparatus in operation is provided.

1 cl, 3 dwg