FIELD: mining, particularly rock-cutting percussion means, namely control valves, percussion devices and method for percussion device working cycle control.
SUBSTANCE: rock-cutting percussion device comprises striker operated by means of control valve including control member. The control member is adapted to control channels passing to working pressure surface of striker. Working cycle of control valve includes a number of connection points adapted to open and close pressurized working medium channels to create a number of impact pulses in the striker in single control valve operation cycle.
EFFECT: increased frequency of strikes performed by percussion device.
25 cl, 9 dwg
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|---|---|---|---|
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| HYDRAULIC CATCHER | 2004 |
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