A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
HYDRAULIC CONTROLLER
To provide a hydraulic controller capable of securing hydraulic pressure of a work actuator to prevent an operating speed of a travel motor from being made too faster even in a configuration with a communication flow passage.SOLUTION: When a compound operation is being performed, a traveling straight valve 70 comprises a first flow passage 73a connected to a first pump 21, a second flow passage 73b connected to a second pump 22, and a communication flow passage 73c capable of communicating the first flow passage 73a and the second flow passage 73b. When the compound operation is performed and an operating state of an arm detected by an operating state sensor 87 is not included in an allowable range, a controller 90 narrows the communication flow passage 73c or shuts off the communication flow passage 73c as compared with a case where it is included in the allowable range.SELECTED DRAWING: Figure 4
【課題】連通流路を備える構成であっても、作業アクチュエータの作動圧を確保し、走行モータの作動速度が速くなりすぎることを抑制できる、油圧制御装置を提供する。【解決手段】複合操作が行われている場合、走行直進弁７０は、第１ポンプ２１につながれる第１流路７３ａと、第２ポンプ２２につながれる第２流路７３ｂと、第１流路７３ａと第２流路７３ｂとを連通可能である連通流路７３ｃと、を備える。複合操作が行われ、かつ、作動状態センサ８７に検出されたアームの作動状態が許容範囲に含まれない場合、コントローラ９０は、許容範囲に含まれる場合に比べて連通流路７３ｃを絞る、または連通流路７３ｃを遮断する。【選択図】図４
HYDRAULIC CONTROLLER
To provide a hydraulic controller capable of securing hydraulic pressure of a work actuator to prevent an operating speed of a travel motor from being made too faster even in a configuration with a communication flow passage.SOLUTION: When a compound operation is being performed, a traveling straight valve 70 comprises a first flow passage 73a connected to a first pump 21, a second flow passage 73b connected to a second pump 22, and a communication flow passage 73c capable of communicating the first flow passage 73a and the second flow passage 73b. When the compound operation is performed and an operating state of an arm detected by an operating state sensor 87 is not included in an allowable range, a controller 90 narrows the communication flow passage 73c or shuts off the communication flow passage 73c as compared with a case where it is included in the allowable range.SELECTED DRAWING: Figure 4
【課題】連通流路を備える構成であっても、作業アクチュエータの作動圧を確保し、走行モータの作動速度が速くなりすぎることを抑制できる、油圧制御装置を提供する。【解決手段】複合操作が行われている場合、走行直進弁７０は、第１ポンプ２１につながれる第１流路７３ａと、第２ポンプ２２につながれる第２流路７３ｂと、第１流路７３ａと第２流路７３ｂとを連通可能である連通流路７３ｃと、を備える。複合操作が行われ、かつ、作動状態センサ８７に検出されたアームの作動状態が許容範囲に含まれない場合、コントローラ９０は、許容範囲に含まれる場合に比べて連通流路７３ｃを絞る、または連通流路７３ｃを遮断する。【選択図】図４
HYDRAULIC CONTROLLER
油圧制御装置
NAGAI MASAKI (author) / UEDA KOJI (author) / FUJITA YUICHIRO (author)
2021-01-28
Patent
Electronic Resource
Japanese