Hydraulic system and engineering machinery

The utility model relates to the technical field of engineering machinery, and discloses a hydraulic system and engineering machinery, which comprise a hydraulic oil tank, a main pump, a main valve standby control valve, a dozer blade oil cylinder, an adjusting arm oil cylinder, a first oil path swi...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SUN QINGCHONG, LU JIE, ZHANG XINKUI, GENG JIAWEN, MIAO HENG, JIN YUEFENG, LIU YANG, DONG YUZHONG, DU DONGYANG, NAN SHANGJUN
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 engineering machinery, and discloses a hydraulic system and engineering machinery, which comprise a hydraulic oil tank, a main pump, a main valve standby control valve, a dozer blade oil cylinder, an adjusting arm oil cylinder, a first oil path switching control valve and a second oil path switching control valve, an oil outlet L1 of the main pump is connected with a first oil inlet D1 of the main valve standby control valve, an oil return opening D2 of the main valve standby control valve is connected with the hydraulic oil tank, and a first oil outlet D3 of the main valve standby control valve is connected with an oil inlet A0 of the first oil way switching control valve. A second oil outlet D4 of the main valve standby control valve is connected with an oil inlet B0 of the second oil way switching control valve. The main valve standby control valve has the advantages that two or more executing mechanisms are controlled through the main valve standby contr