SECTIONAL HYDRAULIC DISTRIBUTOR Russian patent published in 2001 - IPC

FIELD: control over actuating hydraulic mechanisms under proportional and/or relay-type conditions. SUBSTANCE: hydraulic distributor has pressure and drain sections with correspondingly pressure and drain hydraulic lines, one or several working sections each including distributor with pressure hydraulic line closed in neutral position and fitted with electrically controlled hydraulic pilots, hydraulic control line coupled to pressure hydraulic line through filter and pressure-reducing valve, shut-off normally-pen electrically controlled valve and hydraulic valve of indirect action coupled to pressure hydraulic line. Shut-off normally-open electrically controlled valve is coupled with spring space of main valve of hydraulic valve of indirection action through throttle located in additional conduit made in pressure section. Filter is fabricated in the form of tubular structure and is mounted in pressure section uniaxially with pressure hydraulic line. EFFECT: increased operational reliability of sectional hydraulic distributor by formation of guaranteed head in spring space of main valve in hydraulic valve of indirect action and by improved reliability of filtration and creation of head of working fluid in control line. 4 dwg