FIELD: machine building.
SUBSTANCE: hydraulic drive comprises a single-rod hydraulic power cylinder with a feedback position sensor, a distribution valve with a proportional solenoid or a drive step motor; the sensor is operated on the basis of photovoltaic conversion, is interlocked to the hydraulic cylinder rod by a friction roll with a magnetic rim and is set coaxially with the roll in an eccentric bush providing for the possibility to regulate the tightness in the coupling of the roll with the rod.
EFFECT: obtaining of through digital conversion of control signals, design simplification and improvement of the hydraulic cylinder operation reliability.
2 dwg
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