REVERSE HYDRAULIC IMPACT DEVICE Russian patent published in 2022 - IPC B25D9/14 E21B1/26 

FIELD: power engineering.

SUBSTANCE: invention relates to a reverse hydraulic impact device. The device contains a distributor with a control chamber and a control channel, an energy accumulator, a spring-connected case and a striker with a groove, a hydraulic chamber, striker movement limiters, the first pair of control channels, the second pair of control channels, an overflow valve, an additional distributor and a throttle for supplying liquid from the control channel of the additional distributor to a drain line. The first pair of control channels connects, depending on the position of the striker, the control channel leading to the distributor control chamber to drain or pressure lines. The overflow valve is made with the possibility of providing liquid supply in an open state through the control channel of the additional distributor to the control chamber of the additional distributor.

EFFECT: same efficiency of the device in forward and reverse directions is ensured.

1 cl, 1 dwg