TWO-STAGE HYDRAULIC DEVICE FOR ASCENDING BOOM AT HIGH SPEED FOR PREVENTING UNNECESSARY ENERGY CONSUMPTION IN ADVANCE AND SHORTENING TIME OF OPERATIONAL CYCLE

TWO-STAGE HYDRAULIC DEVICE FOR ASCENDING BOOM AT HIGH SPEED FOR PREVENTING UNNECESSARY ENERGY CONSUMPTION IN ADVANCE AND SHORTENING TIME OF OPERATIONAL CYCLE

PURPOSE: A two-stage hydraulic device for ascending a boom at high speed is provided to shorten the time of an operational cycle and to prevent the unnecessary energy consumption in advance by supplying hydraulic oil additionally into a boom cylinder when ascending a boom only, and to heighten worki...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: SHIN, HYEON CHEOL, CHO, HYEON GI
Format: Patent
Sprache:eng ; kor
Schlagworte:
DREDGING
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
SOIL SHIFTING
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Beschreibung
Zusammenfassung:PURPOSE: A two-stage hydraulic device for ascending a boom at high speed is provided to shorten the time of an operational cycle and to prevent the unnecessary energy consumption in advance by supplying hydraulic oil additionally into a boom cylinder when ascending a boom only, and to heighten working efficiency by operating a motor and a driving pump simply and shortening the time of an operational cycle. CONSTITUTION: The two-stage hydraulic device for ascending a boom at high speed contains: a driving pump(6) driven by a motor(5) and composed of a discharge pipe(61) connected to a hydraulic oil feed pipe(11) which is installed between a pump(1) and a main control valve(2) and an inflow pipe(62) connected to a hydraulic tank(4); a check valve(63) installed to an outlet pipe of the driving pump(6) to prevent the inflow of hydraulic oil by a pump; a motor(5) connected to the driving pump(6) to operate; a relay(9) connected to the motor(5) to supply power sources; and an operational switch(8) operating the relay(9) automatically.