The invention relates to a mechanism for changing the pitch of a propeller (13) of a turbine engine, comprising an electro-hydraulic actuator (11), comprising:-an electric machine comprising a rotatable actuating shaft; -a pumping assembly comprising two hydraulic axial piston pumps, each hydraulic axial piston pump comprising: o a barrel contained in a cavity filled with hydraulic fluid; o a set of cylinders formed in the barrel, each cylinder housing a translatable piston and comprising an inlet port and a delivery port; o and an inclined disc, the disc of the first pump comprising a crescent-shaped inlet for circulating hydraulic fluid when the disc is rotated in the first direction, and the disc of the second pump comprising a crescent-shaped inlet for circulating hydraulic fluid when the disc is rotated in the second direction.
本发明涉及一种用于改变涡轮发动机的螺旋桨(13)的桨距的机构,该机构包括电动液压致动器(11),该机构包括:‑电机,电机包括可旋转致动轴;‑泵送组件,泵送组件包括两个液压轴向活塞泵,每个液压轴线活塞泵包括:o筒部,筒部被容纳在充注有液压流体的空腔中;o形成在筒部中的一组汽缸,每个汽缸容纳有可平移的活塞并且包括进入口和输送口;o以及倾斜的盘,第一泵的盘包括用于当盘在第一方向上旋转时使液压流体流通的新月形进入口,并且第二泵的盘包括用于当盘在第二方向上旋转时使液压流体流通的新月形进入口。
Electro-hydraulic pitch with reversible pump
具有可逆泵的电动液压桨距
2024-02-02
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
ELECTRO-HYDRAULIC STEERING SYSTEM USING REVERSIBLE-DISCHARGE-DIRECTION VARIABLE HYDRAULIC PUMP
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|Engineering Index Backfile | 1943
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