FIELD: earth moving machinery; single bucket excavators; hydraulic drive of cyclic action machines. SUBSTANCE: two-flow hydraulic drive has two pumps, hydraulic tank, group of working member hydraulic motors, hydraulic distributor with spools connected to hydraulic motor group and one and two open flow-through channels with opposite directions of working liquid flow. Drive has also pressure and return hydraulic lines and two bridge lines. First of bridge lines is made for connecting and disconnecting outlet of one of flow-through channels and inlet of hydraulic distributor with one open flow-through channel. Second bridge line is made for connecting and disconnecting outlet of one of flow-through channels and hydraulic return line. EFFECT: improved reliability of operation. 2 dwg
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