A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC CONTROL DEVICE FOR WORK MACHINE
PROBLEM TO BE SOLVED: To prevent a work machine from being troubled when a hydraulic pump is controlled under a target pressure follow-up control.SOLUTION: This invention relates to a hydraulic control device which comprises a variable capacity type hydraulic pump [2] driven by an engine [1]; a regulator [R] for changing an inclination angle of the hydraulic pump; and a pilot circuit [PC1] for supplying a pilot pressure to the regulator, in which the inclination angle of the hydraulic pump is changed from a minimum inclination angle [zero] to a maximum inclination angle. The hydraulic control device includes a control part [5] for controlling the hydraulic pump in response to a first control to cause a discharging pressure of the hydraulic pump to be followed to the target pressure or a second control in which a discharging flow rate of the hydraulic pump is decreased as the discharging pressure of the hydraulic pump is increased; a changing-over means [8] for changing-over the control over the hydraulic pump to either the first control or the second control; and a selector switch [9] for changing-over the changing-over means [8].SELECTED DRAWING: Figure 2
【課題】油圧ポンプを目標圧追従制御にて制御する場合において、作業機械のトラブルを防止すること。【解決手段】エンジン（１）によって駆動する可変容量型の油圧ポンプ（２）と、油圧ポンプの傾転角を変化させるレギュレータ（Ｒ）と、レギュレータにパイロット圧を供給するパイロット回路（ＰＣ１）と、を備え、油圧ポンプの傾転角が最小傾転角（ゼロ）から最大傾転角まで変化する作業機械の油圧制御装置において、油圧ポンプの吐出圧力を目標圧に追従させる第１の制御、または油圧ポンプの吐出圧力が増加するに連れて油圧ポンプの吐出流量が減少する第２の制御に従って油圧ポンプを制御する制御部（５）と、油圧ポンプの制御を第１の制御または第２の制御に切り換える切換手段（８）と、切換手段（８）を切換える選択スイッチ（９）と、を有する。【選択図】図２
HYDRAULIC CONTROL DEVICE FOR WORK MACHINE
PROBLEM TO BE SOLVED: To prevent a work machine from being troubled when a hydraulic pump is controlled under a target pressure follow-up control.SOLUTION: This invention relates to a hydraulic control device which comprises a variable capacity type hydraulic pump [2] driven by an engine [1]; a regulator [R] for changing an inclination angle of the hydraulic pump; and a pilot circuit [PC1] for supplying a pilot pressure to the regulator, in which the inclination angle of the hydraulic pump is changed from a minimum inclination angle [zero] to a maximum inclination angle. The hydraulic control device includes a control part [5] for controlling the hydraulic pump in response to a first control to cause a discharging pressure of the hydraulic pump to be followed to the target pressure or a second control in which a discharging flow rate of the hydraulic pump is decreased as the discharging pressure of the hydraulic pump is increased; a changing-over means [8] for changing-over the control over the hydraulic pump to either the first control or the second control; and a selector switch [9] for changing-over the changing-over means [8].SELECTED DRAWING: Figure 2
【課題】油圧ポンプを目標圧追従制御にて制御する場合において、作業機械のトラブルを防止すること。【解決手段】エンジン（１）によって駆動する可変容量型の油圧ポンプ（２）と、油圧ポンプの傾転角を変化させるレギュレータ（Ｒ）と、レギュレータにパイロット圧を供給するパイロット回路（ＰＣ１）と、を備え、油圧ポンプの傾転角が最小傾転角（ゼロ）から最大傾転角まで変化する作業機械の油圧制御装置において、油圧ポンプの吐出圧力を目標圧に追従させる第１の制御、または油圧ポンプの吐出圧力が増加するに連れて油圧ポンプの吐出流量が減少する第２の制御に従って油圧ポンプを制御する制御部（５）と、油圧ポンプの制御を第１の制御または第２の制御に切り換える切換手段（８）と、切換手段（８）を切換える選択スイッチ（９）と、を有する。【選択図】図２
HYDRAULIC CONTROL DEVICE FOR WORK MACHINE
作業機械の油圧制御装置
UDAGAWA TSUTOMU (author) / TAKAHASHI NOBUO (author) / NAKAYAMA AKIRA (author) / NAKANO TOSHIMI (author)
2018-02-15
Patent
Electronic Resource
Japanese