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Application

98107954/28, 1998-04-20

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Start date

1998-04-20

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Actual filing date

1998-04-20

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Published

2000-07-27

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Inventor

Red'Ko P.G.Ambarnikov A.V.Tychkin V.I.Rjabov V.M.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Mashinostroitel'Nyj Zavod

VOLUMETRIC SPEED CONTROL PUMP HYDRAULIC DRIVE Russian patent published in 2000 - IPC

Abstract RU 2153435 C2

FIELD: hydraulic automatic control systems; slave mechanisms. SUBSTANCE: hydraulic drive has the following devices arranged in housing and coupling by hydraulic lines: double-space hydraulic motor, high-and low-pressure axial-plunger pumps unit, closed-type hydraulic tank with compensator, nozzle-gate type electrohydraulic amplifier consisting of electromechanical converter, throttles, nozzles and nine-line spool hydraulic distributor provided with four grooves and five lands and under-face control chambers. Pressure hydraulic line of high-pressure pump is laid to left middle and right middle lands of hydraulic distributor spool. Pressure hydraulic line of low-pressure pump is laid through constant throttles to its under-face control chambers, nozzles and to pusher control chamber. Hydraulic motor spaces are connected, respectively, to left middle and right middle grooves. Suction hydraulic line of high-pressure pump is laid to left extreme and to right extreme lands, and line from hydraulic tank is laid to middle land, left extreme and right extreme grooves. EFFECT: improved reliability, reduced consumption of power. 1 dwg

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RU 2 153 435 C2

Authors

Red'Ko P.G.

Ambarnikov A.V.

Tychkin V.I.

Rjabov V.M.

Dates

2000-07-27—Published

1998-04-20—Filed

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