EXCAVATOR

A shovel (100) includes a lower traveling structure (1), an upper swing structure (3), an engine (11), an electrically controlled left main pump (14L), an electrically controlled right main pump (14R), a left regulator (13L) that controls the geometric displacement of the left main pump (14L), a rig...

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Bibliographische Detailangaben
Hauptverfasser:	SANO, Kiminori, SHIRATANI, Ryuji
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR DREDGING FIXED CONSTRUCTIONS FLUID-PRESSURE ACTUATORS FLUID-PRESSURE ACTUATORS, e.g. SERVO-MOTORS FOUNDATIONS HEATING HYDRAULIC ENGINEERING HYDRAULICS OR PNEUMATICS IN GENERAL LIGHTING MECHANICAL ENGINEERING SOIL SHIFTING SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A shovel (100) includes a lower traveling structure (1), an upper swing structure (3), an engine (11), an electrically controlled left main pump (14L), an electrically controlled right main pump (14R), a left regulator (13L) that controls the geometric displacement of the left main pump (14L), a right regulator (13R) that controls the geometric displacement of the right main pump (14R), and a controller (30) that electrically controls the left regulator (13L) and the right regulator (13R). The controller (30) calculates the limit value of the respective geometric displacements of the left main pump (14L) and the right main pump (14R) based on discharge pressures with respect to the left main pump (14L) and the right main pump (14R), and controls the respective geometric displacements of the left main pump (14L) and the right main pump (14R) based on the calculated limit value.