Suspension valve group, hydro-pneumatic suspension system and all-terrain crane

The invention discloses a suspension valve group, an oil gas suspension system and an all-terrain crane. The suspension valve group comprises suspension valve group A, B and SP ports; the first electromagnetic directional valve is connected between a port B of the suspension valve group and an oil i...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	YU ZHONGTAI, ZHANG JINXING, SUN JIANHUA, HOU YONG
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 discloses a suspension valve group, an oil gas suspension system and an all-terrain crane. The suspension valve group comprises suspension valve group A, B and SP ports; the first electromagnetic directional valve is connected between a port B of the suspension valve group and an oil inlet P of the hydraulic oil tank and is used for controlling on-off of oil entering a small cavity of the suspension oil cylinder; the second electromagnetic directional valve is connected between an A port of the suspension valve group and an oil inlet P of the hydraulic oil tank and is used for controlling on-off of oil entering a large cavity of the suspension oil cylinder; the third electromagnetic directional valve is connected between an A port of the suspension valve group and an oil return port T of the hydraulic oil tank and is used for controlling the on-off that oil in a large cavity of the suspension oil cylinder flows back to the hydraulic oil tank; the suspension elastic and rigid switching valve is c