Electro-hydraulic lifting control valve

The utility model relates to the technical field of hydraulic valves, in particular to an electro-hydraulic lifting control valve which comprises a valve body, a lifting proportional valve and a three-way compensation valve are arranged in the valve body, the three-way compensation valve comprises a...

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Bibliographische Detailangaben
Hauptverfasser:	ZHANG HONGBO, RAO WEIQIANG, TIAN LONGSHENG
Format:	Patent
Sprache:	chi ; eng
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 utility model relates to the technical field of hydraulic valves, in particular to an electro-hydraulic lifting control valve which comprises a valve body, a lifting proportional valve and a three-way compensation valve are arranged in the valve body, the three-way compensation valve comprises a compensation valve element and a first reset mechanism, and the compensation valve element is connected in the valve body in a sliding mode. A first oil inlet, a first oil return port and a first working oil port are formed in the three-way compensation valve, a second oil inlet is formed in the lifting proportional valve, the first oil inlet is communicated with the second oil inlet, the first reset mechanism and the first working oil port are arranged at the two ends of the compensation valve element respectively, and the first oil inlet is communicated with the first working oil port. According to the electro-hydraulic lifting control valve, accurate and stable proportional control over flow can be achieved, so