VALVOLA ELETTROIDRAULICA A PIU'VIE

The electrohydraulic valve has a precontrol stage and a main control stage whose control slide is centered by springs in a neutral position and deflectable to both sides. The control slide borders the pressure chamber from which a control channel leads to the control connections of the precontrol st...

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Bibliographische Detailangaben
Hauptverfasser:	JOACHIM HEISER, WINFRIED HOMMEN, MANFRED HAUSER
Format:	Patent
Sprache:	ita
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HEATING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The electrohydraulic valve has a precontrol stage and a main control stage whose control slide is centered by springs in a neutral position and deflectable to both sides. The control slide borders the pressure chamber from which a control channel leads to the control connections of the precontrol stage whose control element pivots from a central position to both sides and on which proportional magnet and a spring act. The precontrol stage (13) has a single proportional magnet (43) and a spring (45) acting against it. An extra solenoid valve (48) is provided to adjust the pressure in the two pressure chambers (22, 23). The extra solenoid valve is a 2-way 2-position type and is located in a transverse channel (49) connecting both control channels (35, 36).