HYDRAULIC DISTRIBUTOR Russian patent published in 2000 - IPC

FIELD: mechanical engineering; hydraulic systems of road building, timber, agricultural and other machines. SUBSTANCE: proposed hydraulic distributor has number of spools of working sections with pressure and drain connections and working outlets, pressure and drain lines connected in parallel with corresponding pressure and drain connections, load unit with control connection connected by inlet to pressure line and by outlet, to drain line. Load line is in communication with control connection. Each working section has at least one check valve connected by outlet by outlet to load line, and by inlet, to one of working outlets of this section. Load unit is made in form of safety valve whose spring space communicates with control connection. In neutral position, working outlets of all sections are in communication with drain. Hydraulic distributor has restrictor. Control connection is coupled by hydraulic line with drain line through restrictor. EFFECT: increased efficiency. 2 cl, 1 dwg