Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
LIQUID PRESSURE DRIVE SYSTEM
PROBLEM TO BE SOLVED: To provide a liquid pressure drive system capable of reducing the cost by restricting the increase in a pressure sensor.SOLUTION: A liquid pressure drive system comprises: a first liquid pressure pump; a second liquid pressure pump; a first capacity change mechanism; a second capacity change mechanism; a plurality of operation valves; a plurality of first direction changeover valves interposed between an actuator and the first liquid pressure pump; a plurality of second direction changeover valves interposed between the actuator and the second liquid pressure pump; a first high pressure selection mechanism 66 for outputting a first maximum pressure on the basis of a plurality of pilot pressures to be outputted to the first direction changeover valves; a first pressure detector 61 for detecting the first maximum pressure; a second high pressure selection mechanism 67 for outputting a second maximum pressure on the basis of a plurality of pilot pressures to be outputted to the second direction changeover valves; and a second pressure detector 62 for detecting the second maximum pressure, in which on the basis of the first maximum pressure, the first capacity change mechanism is activated for controlling the discharge flow rate of the first liquid pressure pump while on the basis of the second maximum pressure, the second capacity change mechanism is activated for controlling the discharge flow rate of the second liquid pressure pump.SELECTED DRAWING: Figure 2
【課題】圧力センサの増加を抑制してコストの低減を図れる液圧駆動システムを提供する。【解決手段】第１液圧ポンプと、第２液圧ポンプと、第１容量変更機構と、第２容量変更機構と、複数の操作弁と、アクチュエータと第１液圧ポンプとの間に夫々介在する複数の第１方向切換弁と、アクチュエータと第２液圧ポンプとの間に夫々介在する複数の第２方向切換弁と、第１方向切換弁に夫々出力される複数のパイロット圧に基づいて第１最高圧力を出力する第１高圧選択機構６６と、第１最高圧を検出する第１圧力検出器６１と、第２方向切換弁に夫々出力される複数のパイロット圧に基づいて第２最高圧力を出力する第２高圧選択機構６７と、第２最高圧を検出する第２圧力検出器６２と、第１最高圧に基づいて第１容量変更機構を動かして第１液圧ポンプの吐出流量を制御し且つ第２最高圧に基づいて第２容量変更機構を動して第２液圧ポンプの吐出流量を制御する。【選択図】図２
LIQUID PRESSURE DRIVE SYSTEM
PROBLEM TO BE SOLVED: To provide a liquid pressure drive system capable of reducing the cost by restricting the increase in a pressure sensor.SOLUTION: A liquid pressure drive system comprises: a first liquid pressure pump; a second liquid pressure pump; a first capacity change mechanism; a second capacity change mechanism; a plurality of operation valves; a plurality of first direction changeover valves interposed between an actuator and the first liquid pressure pump; a plurality of second direction changeover valves interposed between the actuator and the second liquid pressure pump; a first high pressure selection mechanism 66 for outputting a first maximum pressure on the basis of a plurality of pilot pressures to be outputted to the first direction changeover valves; a first pressure detector 61 for detecting the first maximum pressure; a second high pressure selection mechanism 67 for outputting a second maximum pressure on the basis of a plurality of pilot pressures to be outputted to the second direction changeover valves; and a second pressure detector 62 for detecting the second maximum pressure, in which on the basis of the first maximum pressure, the first capacity change mechanism is activated for controlling the discharge flow rate of the first liquid pressure pump while on the basis of the second maximum pressure, the second capacity change mechanism is activated for controlling the discharge flow rate of the second liquid pressure pump.SELECTED DRAWING: Figure 2
【課題】圧力センサの増加を抑制してコストの低減を図れる液圧駆動システムを提供する。【解決手段】第１液圧ポンプと、第２液圧ポンプと、第１容量変更機構と、第２容量変更機構と、複数の操作弁と、アクチュエータと第１液圧ポンプとの間に夫々介在する複数の第１方向切換弁と、アクチュエータと第２液圧ポンプとの間に夫々介在する複数の第２方向切換弁と、第１方向切換弁に夫々出力される複数のパイロット圧に基づいて第１最高圧力を出力する第１高圧選択機構６６と、第１最高圧を検出する第１圧力検出器６１と、第２方向切換弁に夫々出力される複数のパイロット圧に基づいて第２最高圧力を出力する第２高圧選択機構６７と、第２最高圧を検出する第２圧力検出器６２と、第１最高圧に基づいて第１容量変更機構を動かして第１液圧ポンプの吐出流量を制御し且つ第２最高圧に基づいて第２容量変更機構を動して第２液圧ポンプの吐出流量を制御する。【選択図】図２
LIQUID PRESSURE DRIVE SYSTEM
液圧駆動システム
KONDO TETSUHIRO (Autor:in) / MURAOKA HIDEYASU (Autor:in) / NAKAGAWA HITOSHI (Autor:in)
16.08.2018
Patent
Elektronische Ressource
Japanisch
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