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发明授权
CN100588591C 用于操作飞机起落架的液压系统的系统 有权

用于操作飞机起落架的液压系统的系统
摘要：
本发明涉及一种用于操作有至少一个压力源和至少一个液压回油管路的飞机的起落架的液压系统的系统，这种系统有一个液压回路，而液压回路包括一个在被加压时可将飞机起落架放下的第一液压管路(“下”6)和一个在被加压时可将飞机起落架收起的第二液压管路(“上”5)，由一个液压分配部件(10、12)可选择性地使这两个管路加压，该分配部件包括至少一个隔断阀(10)和一个用于使这两个液压管路之一连通于压力源而另一液压管路连通于回油管路的选择器(12)。按照本发明，这种系统设计包括：用于使流体从选择器的旁路通过的被动分流装置(54、55)，该被动分流装置是设置在第二管路(“上”5)和一个延伸于隔断阀和选择器之间的进油管路(20)之间；强迫回油连接装置，其用于强迫隔断阀(10)隔断飞机的压力回路并把进油管路连通于回油管路。
摘要（英）：

The invention relates to an architecture for a hydraulic system for operating the landing gear of an aircraft including at least one pressure source and at least one hydraulic return, the system having a hydraulic circuit comprising a first hydraulic line that, when pressurized, causes the landing gear to be lowered, and a second hydraulic line that, when pressurized, causes the landing gear to beraised, said lines being selectively pressurized by means of a hydraulic distribution member comprising at least an isolation valve and a selector for putting one of the lines into communication withpressure and the other line into communication with return. According to the invention, the architecture includes passive bypass means for bypassing the selector, said means being disposed between the second line and an admission line that extends between the isolation valve and the selector, and forced return connection means for forcing the isolation valve to isolate the pressure circuit of theaircraft and connect the admission line to return.

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