| 摘要 |
FIELD: mining industry. ^ SUBSTANCE: device has the only feed, connected to hydraulic control line, feeding working liquid under pressure, at least, one main drain and at least one support drain, valve in first position, at which pressure of working liquid is limited, at least, from one supporting drain, while valve is capable of displacement between its first position and second position by changing pressure of working liquid in the only feed. System for distribution of working liquid has hydraulic control line, distributor, having the only feed, connected to hydraulic control line, at least, two drains and valve being capable of displacement in distributor for controlling flow from deed k, at least two drains and displaced in response to liquid pressure change in the only feed. ^ EFFECT: higher reliability. ^ 6 cl, 46 dwg |
