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CONTROL VALVE AND HYDRAULIC SYSTEM FOR WORK MACHINE WITH CONTROL VALVE
PROBLEM TO BE SOLVED: To enable operational feeling for a hydraulic actuator to be improved.SOLUTION: A control valve comprises a first flow passage, a second flow passage, a third flow passage, a fourth flow passage, a fifth flow passage and a spool movable to either a first position or a second position. The spool has a first connection part enabling the first flow passage and the third flow passage to be connected when the spool is set at a first position and enabling the first flow passage and the fifth flow passage to be connected when the spool is set at a second position; a second connection part enabling the second flow passage and the fifth flow passage to be connected when the spool is set at a first position and enabling the second flow passage and the third flow passage to be connected when the spool is set at a second position; and a third connection part enabling the fifth flow passage and the fourth flow passage to be connected when the spool is set at a first position and/or enabling the fifth flow passage and the fourth flow passage to be connected when the spool is set at the second position.SELECTED DRAWING: Figure 2A
【課題】油圧アクチュエータの操作感を向上させることができるようにする。【解決手段】制御弁は、第１流路と、第２流路と、第３流路と、第４流路と、第５流路と、第１位置又は第２位置に移動可能なスプールとを備えている。スプールは、第１位置である場合に第１流路と第３流路とを接続可能で且つ、第２位置である場合に第１流路と第５流路とを接続可能な第１接続部と、第１位置である場合に第２流路と第５流路とを接続可能で且つ、第２位置である場合に第２流路と第３流路とを接続可能な第２接続部と、第１位置である場合に第５流路と第４流路とを接続可能、及び／又は、第２位置である場合に第５流路と第４流路とを接続可能な第３接続部と、を有している。【選択図】図２Ａ
CONTROL VALVE AND HYDRAULIC SYSTEM FOR WORK MACHINE WITH CONTROL VALVE
PROBLEM TO BE SOLVED: To enable operational feeling for a hydraulic actuator to be improved.SOLUTION: A control valve comprises a first flow passage, a second flow passage, a third flow passage, a fourth flow passage, a fifth flow passage and a spool movable to either a first position or a second position. The spool has a first connection part enabling the first flow passage and the third flow passage to be connected when the spool is set at a first position and enabling the first flow passage and the fifth flow passage to be connected when the spool is set at a second position; a second connection part enabling the second flow passage and the fifth flow passage to be connected when the spool is set at a first position and enabling the second flow passage and the third flow passage to be connected when the spool is set at a second position; and a third connection part enabling the fifth flow passage and the fourth flow passage to be connected when the spool is set at a first position and/or enabling the fifth flow passage and the fourth flow passage to be connected when the spool is set at the second position.SELECTED DRAWING: Figure 2A
【課題】油圧アクチュエータの操作感を向上させることができるようにする。【解決手段】制御弁は、第１流路と、第２流路と、第３流路と、第４流路と、第５流路と、第１位置又は第２位置に移動可能なスプールとを備えている。スプールは、第１位置である場合に第１流路と第３流路とを接続可能で且つ、第２位置である場合に第１流路と第５流路とを接続可能な第１接続部と、第１位置である場合に第２流路と第５流路とを接続可能で且つ、第２位置である場合に第２流路と第３流路とを接続可能な第２接続部と、第１位置である場合に第５流路と第４流路とを接続可能、及び／又は、第２位置である場合に第５流路と第４流路とを接続可能な第３接続部と、を有している。【選択図】図２Ａ
CONTROL VALVE AND HYDRAULIC SYSTEM FOR WORK MACHINE WITH CONTROL VALVE
制御弁及び制御弁を備えた作業機の油圧システム
FUKUDA YUJI (author) / ARII KAZUYOSHI (author)
2017-05-25
Patent
Electronic Resource
Japanese
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