HYDRAULIC HAMMER Russian patent published in 2018 - IPC E21B1/26 E21B1/38 E21C37/24 

FIELD: mining; construction.

SUBSTANCE: invention relates to mining and construction industries and is aimed at increasing the efficiency of hydraulic hammer production and operation. Hydraulic hammer contains a body with pressure and discharge channels and with reciprocating striker mounted in it for transmitting a force pulse to work tool having pressure channel, overflow channel, drain channel and control channel, and in the upper part of which there is a hole in which the control slide valve is located. Striker forms with the housing a pressure cavity, an overflow cavity for equalizing the fluid pressure and a drain cavity, and the control slide valve is made with three lands, where the diameter of the upper land is greater than the diameter of the lower land, and the middle land is stepped.

EFFECT: invention is aimed at increasing the efficiency of hydraulic hammer production and operation.

10 cl, 1 dwg