Hydraulic energy-saving system and reach stacker

The invention provides a hydraulic energy-saving system. The hydraulic energy-saving system comprises a stretching and contracting oil cylinder and a main valve and furthermore comprises an oil supplementary valve; the stretching and contracting oil cylinder is a single-piston-rod oil cylinder; the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YANG LANG, ZHOU DONGCAI, YUAN PENG
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING CRANES DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS HAULING HEATING HOISTING HYDRAULICS OR PNEUMATICS IN GENERAL LIFTING LIGHTING LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS,WINCHES, OR TACKLES MECHANICAL ENGINEERING PERFORMING OPERATIONS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides a hydraulic energy-saving system. The hydraulic energy-saving system comprises a stretching and contracting oil cylinder and a main valve and furthermore comprises an oil supplementary valve; the stretching and contracting oil cylinder is a single-piston-rod oil cylinder; the main valve is connected with the stretching and contracting oil cylinder, the main valve comprises a work oil opening A, a work oil opening B, an oil inlet P connected with a hydraulic oil source and an oil return opening T connected with an oil tank; the work oil opening A is connected with a rodless cavity oil opening of the stretching and contracting oil cylinder (6), the work oil opening B is connected with a rod cavity oil opening of the stretching and contracting oil cylinder, the oil supplementary valve is connected between the hydraulic oil tank and the rod cavity oil opening of the stretching and contracting oil cylinder, and one-way communication from the hydraulic oil tank to a rod cavity of the stretchi