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Pilot pressure control device
[Problem] To provide a pilot pressure control device capable of ensuring pilot pressure with an inexpensive configuration. [Solution] A controller (26) is provided that performs control so as to throttle the degree of opening of a spool (8), which is the cause of a drop in pump pressure, when the pump pressure drops to a predetermined pressure or less due to the driving of a fluid pressure actuator (4). According to the invention, the pump pressure can be maintained in an inexpensive configuration without increasing the size of the pressure accumulator (22) for accumulating pressure, and the pilot pressure can be ensured from this pump pressure by means of the pilot circuit (17).
问题：提供一种能够以廉价的配置确保先导压力的先导压力控制装置。解决方案：配备有控制器(26)，该控制器(26)被配置成在由于流体压力致动器(4)的驱动而导致泵压力下降到预定压力或更低时进行控制，以对作为泵压力下降的原因的阀芯(8)的开度进行节流。在不增加用于蓄压的蓄压器(22)的尺寸的情况下，能够以廉价的配置维持泵压力，并且先导压力能够通过先导回路(17)从该泵压力得到保证。
Pilot pressure control device
[Problem] To provide a pilot pressure control device capable of ensuring pilot pressure with an inexpensive configuration. [Solution] A controller (26) is provided that performs control so as to throttle the degree of opening of a spool (8), which is the cause of a drop in pump pressure, when the pump pressure drops to a predetermined pressure or less due to the driving of a fluid pressure actuator (4). According to the invention, the pump pressure can be maintained in an inexpensive configuration without increasing the size of the pressure accumulator (22) for accumulating pressure, and the pilot pressure can be ensured from this pump pressure by means of the pilot circuit (17).
问题：提供一种能够以廉价的配置确保先导压力的先导压力控制装置。解决方案：配备有控制器(26)，该控制器(26)被配置成在由于流体压力致动器(4)的驱动而导致泵压力下降到预定压力或更低时进行控制，以对作为泵压力下降的原因的阀芯(8)的开度进行节流。在不增加用于蓄压的蓄压器(22)的尺寸的情况下，能够以廉价的配置维持泵压力，并且先导压力能够通过先导回路(17)从该泵压力得到保证。
Pilot pressure control device
先导压力控制装置
NAKAJIMA HIDEKI (author) / KOGA HISAKAZU (author)
2024-04-09
Patent
Electronic Resource
Chinese