FLUID PRESSURE DRIVE DEVICE

A hydraulic drive device includes a main pump (15) and a single pressure gauge (11). The main pump (15) controls discharge flow rates of a first hydraulic oil and a second hydraulic oil discharged into two or more first pressure oil supply passage (120) and second pressure oil supply passage (121) w...

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Bibliographic Details
Main Author AKAMI, Toshiya
Format Patent
LanguageEnglish
French
German
Published 03.11.2021
Subjects
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
POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS
PUMPS
PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
SOIL SHIFTING
SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL
WEAPONS
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Summary:A hydraulic drive device includes a main pump (15) and a single pressure gauge (11). The main pump (15) controls discharge flow rates of a first hydraulic oil and a second hydraulic oil discharged into two or more first pressure oil supply passage (120) and second pressure oil supply passage (121) with a single swash plate (23). The main pump (15) is a swash plate variable displacement type split flow hydraulic pump. The pressure gauge (11) measures an intermediate pressure of the discharged fluid at a merging point (123a) between the first pressure oil supply passage (120) and the second pressure oil supply passage (121). The discharge flow rates are controlled based on a pressure value obtained by the pressure gauge (11).
Bibliography:Application Number: EP20210164872