Rapid lifting tool

The utility model discloses a quick lifting tool and belongs to the technical field of jacks. Comprising an oil cylinder base, a jack body and an oil pump, the jack body comprises an outer sleeve, an oil cylinder, a large piston rod and a small piston rod, and an oil storage cavity is formed between...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	JIANG ZEHONG, LIANG DINGCHUN, SHAO WEIJIA
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 HAULING HEATING HOISTING HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDEDFOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCEDIRECTLY TO THE SURFACE OF A LOAD HYDRAULICS OR PNEUMATICS IN GENERAL LIFTING LIGHTING MECHANICAL ENGINEERING PERFORMING OPERATIONS SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL TRANSPORTING WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses a quick lifting tool and belongs to the technical field of jacks. Comprising an oil cylinder base, a jack body and an oil pump, the jack body comprises an outer sleeve, an oil cylinder, a large piston rod and a small piston rod, and an oil storage cavity is formed between the outer sleeve and the oil cylinder; a first working oil chamber is formed between the small piston rod below the large piston rod and the oil cylinder; a second working oil chamber is formed by a small piston rod cavity in the small piston rod and a large piston rod cavity above the small piston rod; on-off of an oil way between the pump cavity and the first working oil chamber and between the pump cavity and the second working oil chamber is controlled through a general control one-way valve and a controllable one-way valve, and when no load or light load occurs, hydraulic oil passing through the general control one-way valve is introduced into the second working oil chamber; when the load is large, the oil pr