Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE, AND HYDRAULIC CIRCUIT
Provided is a hydraulic circuit, for a construction machine, which drives an actuator by merging pressure oil from a fixed-volume pump into a center bypass oil path from a variable-volume pump to an oil tank, wherein the flow rate of flow from the fixed-volume pump to the center bypass oil path can be controlled in accordance with a requested flow rate of the actuator. A distribution direction-switching valve 64, which has a first oil path 64a from a fixed-volume pump 62 to an oil tank T and a second oil path 64b from the fixed-volume pump 62 to a first center bypass oil path 61c, has a first signal reception unit 641 which causes a spool to slide in a direction in which the first oil path 64a is formed, and a second signal reception unit 642 which causes a spool to slide in a direction in which the second oil path 64b is formed, and determines a distribution ratio of pressure oil flowing to the first oil path 64a and the second oil path 64b in accordance with the difference in size of the signals received by the first signal reception unit 641 and the second signal reception unit 642, the first signal reception unit 641 receiving a signal based on a negative control signal.
HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE, AND HYDRAULIC CIRCUIT
Provided is a hydraulic circuit, for a construction machine, which drives an actuator by merging pressure oil from a fixed-volume pump into a center bypass oil path from a variable-volume pump to an oil tank, wherein the flow rate of flow from the fixed-volume pump to the center bypass oil path can be controlled in accordance with a requested flow rate of the actuator. A distribution direction-switching valve 64, which has a first oil path 64a from a fixed-volume pump 62 to an oil tank T and a second oil path 64b from the fixed-volume pump 62 to a first center bypass oil path 61c, has a first signal reception unit 641 which causes a spool to slide in a direction in which the first oil path 64a is formed, and a second signal reception unit 642 which causes a spool to slide in a direction in which the second oil path 64b is formed, and determines a distribution ratio of pressure oil flowing to the first oil path 64a and the second oil path 64b in accordance with the difference in size of the signals received by the first signal reception unit 641 and the second signal reception unit 642, the first signal reception unit 641 receiving a signal based on a negative control signal.
HYDRAULIC CIRCUIT FOR CONSTRUCTION MACHINE, AND HYDRAULIC CIRCUIT
HYDRAULIKKREIS FÜR BAUMASCHINE UND HYDRAULISCHER KREISLAUF
CIRCUIT HYDRAULIQUE POUR MACHINE DE CONSTRUCTION, ET CIRCUIT HYDRAULIQUE
ONO JUNYA (Autor:in) / MATSUYAMA HIROSHI (Autor:in) / KAGEYAMA NAOTO (Autor:in) / IWASAKI HITOSHI (Autor:in) / TUKAHARA NANAMI (Autor:in)
30.11.2022
Patent
Elektronische Ressource
Englisch
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