Multi-stage hydraulic cylinder with damping device of mining dumping truck

The utility model discloses a multi-stage hydraulic cylinder with a damping device of a mining dumping truck, comprising a primary cylinder barrel, an end cover, a movable multi-stage cylinder barrel, a piston and a piston rod, wherein the movable multi-stage cylinder barrel is arranged in the prima...

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Bibliographische Detailangaben
Hauptverfasser:	LIANG XIAOBO, WANG WENDI, ZHONG XIANGJING, PENG GUOPU
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 discloses a multi-stage hydraulic cylinder with a damping device of a mining dumping truck, comprising a primary cylinder barrel, an end cover, a movable multi-stage cylinder barrel, a piston and a piston rod, wherein the movable multi-stage cylinder barrel is arranged in the primary cylinder barrel; and the piston and the piston rod are arranged in the primary cylinder barrel. The multi-stage hydraulic cylinder is characterized in that the middle part of the multi-stage hydraulic cylinder is provided with a damping cavity A communicated with an oil-draining channel; the damping cavity is internally provided with a damping sleeve shaft fixed on the end cover; the damping sleeve shaft is internally provided with a left one-way valve and a right one-way valve; an annular gap is arranged between the damping sleeve shaft and the piston; and the rear end of the movable cylinder barrel is provided with a groove which is internally provided with a guide ring for guiding. The multi-stage hydraulic c