Quick drop valve control for hydraulically actuated bulldozer blades

The quick drop valve control (10) includes a two position solenoid valve (34) which is energized to communicate with shift end (29) of quick drop valve (11) with a resolved pressure port (44) of a resolver (46), connected to the lift and drop sides (23,24) of lift cylinders (21). A three position so...

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Bibliographische Detailangaben
Hauptverfasser:	CONNOLLOY, JOHN R., CHANNAHON, ILL., US, RAMAMOORTHY, CHANDRASEKA (NMI), DOWNER GROVE, ILL., US, HARLOW, RANDALL A., BRIMFIELD, ILL., US, SEANEY, STEVEN P., GLEN ELLYN, ILL., US
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The quick drop valve control (10) includes a two position solenoid valve (34) which is energized to communicate with shift end (29) of quick drop valve (11) with a resolved pressure port (44) of a resolver (46), connected to the lift and drop sides (23,24) of lift cylinders (21). A three position solenoid valve (32) of the control is connected to spring end (28) of drop valve to complete the quick drop function.