Control device for a hydrostatic drive for at least two actuator

Details Control device for a hydrostatic drive for at least two actuator Control device for a hydrostatic drive for at least two actuator

1988-01-22

1989-09-12

Garrett, Robert E.

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60445, F16D 3102

Patent

active

048648221

ABSTRACT:
A control device for a hydrostatic drive for at least two actuators having a variable displacement pump whose adjusting device can be acted on as a function of the displacement and/or of the delivery pressure, wherein a control valve is associated with each actuator in its hydraulic supply line and the delivery flow for each actuator is determined by means of a pressure compensator as a function of the valve preset at the control valve, is simplified while ensuring accurate control. This is achieved by having the adjusting device always set the pump at a displacement which is slightly less than the sum of the actual instantaneous volume flows required by the actuators.

REFERENCES:
patent: 3579987 (1971-05-01), Busse
patent: 3914939 (1975-10-01), Purdy
patent: 4642984 (1987-02-01), Dixen
patent: 4712376 (1987-12-01), Hadank et al.
patent: 4759183 (1988-07-01), Kreth et al.

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