Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
HYDRAULIC PRESSURE CONTROL SYSTEM AND CONSTRUCTION MACHINE
PROBLEM TO BE SOLVED: To restrict useless energy loss while assuring operability of combined control.SOLUTION: This invention comprises: first and second hydraulic actuators 16, 17; a variable displacement hydraulic pump 3 for driving the hydraulic actuators 16, 17; a second directional control valve 13 for controlling a direction of hydraulic oil fed from the second hydraulic pump 3 and supplying it to the hydraulic actuator; first and second operation levers 18, 19 for generating operating signal for driving the hydraulic actuator in response to an amount of operation; a flow rate control valve 15 arranged at a pipe passage reaching from the second hydraulic pump 3 to the second directional control valve 13; and an input device 21b for inputting a flow rate adjustment value of the flow rate control valve 15. When a passing flow rate at the flow rate control valve 15 is adjusted and a flow rate toward a low load of the first and second hydraulic actuators 16, 17 is restricted in correspondence with an amount of adjustment, a discharging flow rate of the second hydraulic pump 3 is controlled so as to supply a surplus flow rate generated through restriction to a higher load one.SELECTED DRAWING: Figure 2
【課題】複合操作の操作性を確保しながら、無駄なエネルギ損失を抑制する。【解決手段】第１及び第２の油圧アクチュエータ１６，１７と、油圧アクチュエータ１６，１７を駆動する可変容量型油圧ポンプ３と、第２油圧ポンプ３から送られる圧油の方向を制御し、油圧アクチュエータに供給する第２方向制御弁１３と、油圧アクチュエータを駆動するための操作信号を操作量に応じて発生させる第１及び第２の操作レバー１８，１９と、第２油圧ポンプ３から第２方向制御弁１３に至る管路に配置された流量制御弁１５と、流量制御弁１５の流量調整値を入力する入力装置２１ｂと、を備え、流量制御弁１５の通過流量が調整され、調整量に対応して第１及び第２油圧アクチュエータ１６，１７のうち負荷の小さな方への流量を抑制したときに、抑制によって生じる余剰の流量を負荷の大きな方に供給すべく第２油圧ポンプ３の吐出流量を制御する。【選択図】図２
HYDRAULIC PRESSURE CONTROL SYSTEM AND CONSTRUCTION MACHINE
PROBLEM TO BE SOLVED: To restrict useless energy loss while assuring operability of combined control.SOLUTION: This invention comprises: first and second hydraulic actuators 16, 17; a variable displacement hydraulic pump 3 for driving the hydraulic actuators 16, 17; a second directional control valve 13 for controlling a direction of hydraulic oil fed from the second hydraulic pump 3 and supplying it to the hydraulic actuator; first and second operation levers 18, 19 for generating operating signal for driving the hydraulic actuator in response to an amount of operation; a flow rate control valve 15 arranged at a pipe passage reaching from the second hydraulic pump 3 to the second directional control valve 13; and an input device 21b for inputting a flow rate adjustment value of the flow rate control valve 15. When a passing flow rate at the flow rate control valve 15 is adjusted and a flow rate toward a low load of the first and second hydraulic actuators 16, 17 is restricted in correspondence with an amount of adjustment, a discharging flow rate of the second hydraulic pump 3 is controlled so as to supply a surplus flow rate generated through restriction to a higher load one.SELECTED DRAWING: Figure 2
【課題】複合操作の操作性を確保しながら、無駄なエネルギ損失を抑制する。【解決手段】第１及び第２の油圧アクチュエータ１６，１７と、油圧アクチュエータ１６，１７を駆動する可変容量型油圧ポンプ３と、第２油圧ポンプ３から送られる圧油の方向を制御し、油圧アクチュエータに供給する第２方向制御弁１３と、油圧アクチュエータを駆動するための操作信号を操作量に応じて発生させる第１及び第２の操作レバー１８，１９と、第２油圧ポンプ３から第２方向制御弁１３に至る管路に配置された流量制御弁１５と、流量制御弁１５の流量調整値を入力する入力装置２１ｂと、を備え、流量制御弁１５の通過流量が調整され、調整量に対応して第１及び第２油圧アクチュエータ１６，１７のうち負荷の小さな方への流量を抑制したときに、抑制によって生じる余剰の流量を負荷の大きな方に供給すべく第２油圧ポンプ３の吐出流量を制御する。【選択図】図２
HYDRAULIC PRESSURE CONTROL SYSTEM AND CONSTRUCTION MACHINE
油圧制御システム及び建設機械
OGURA KOHEI (Autor:in) / ODAKA KATSUAKI (Autor:in) / NARASAKI AKIHIRO (Autor:in)
01.12.2016
Patent
Elektronische Ressource
Japanisch
HYDRAULIC PRESSURE CONTROL DEVICE FOR CONSTRUCTION MACHINE
| Europäisches Patentamt | 2016
HYDRAULIC PRESSURE CONTROL CIRCUIT OF CONSTRUCTION MACHINE
| Europäisches Patentamt | 2020
HYDRAULIC PRESSURE CONTROL CIRCUIT OF CONSTRUCTION MACHINE
| Europäisches Patentamt | 2020
HYDRAULIC PRESSURE CONTROL DEVICE FOR A CONSTRUCTION MACHINE
| Europäisches Patentamt | 2019