POSITIVE SPEED CONTROL HYDRAULIC PUMP DRIVE Russian patent published in 1999 - IPC

Abstract RU 2132491 C1

FIELD: actuating mechanisms of various machines, ships, flying vehicles, etc. SUBSTANCE: seven-line hydraulic control valve has three grooves and four lands. Hydraulic delivery line runs to its central groove; hydraulic tank communicates with extreme grooves. Suction line communicating with extreme lands accommodates feedback device for external load in the form of spring-loaded cylinder provided with working port and control chamber communicating with delivery line. Each hydraulic line providing communication between hydraulic motor spaces and middle lands of valve has flowrate limiters whose control chambers communicate with opposite space of hydraulic motor. EFFECT: improved stability of speed and loading characteristics at heavy fluctuations of drive motor supply voltage. 1 dwg

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RU 2 132 491 C1

Authors

Red'Ko P.G.

Ambarnikov A.V.

Tychkin V.I.

Rjabov V.M.

Dates

1999-06-27—Published

1997-06-03—Filed