FIELD: mechanical engineering; hydraulic systems of machines furnished with hydraulic accumulators. SUBSTANCE: hydraulic system has pump, hydraulic accumulator and pump connecting system made in form of spring loaded rod and valve arranged between two rods. Rod which opens the valve is connected with hydraulic accumulator, and rod closing the valve, with pump pressure main line. Valve opening and valve closing pressures are found from special formula. EFFECT: simplified design, provision of top priority charging of accumulator to definite pressure. 2 dwg
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