The invention relates to a pitch change mechanism for a turbine engine propeller (10), comprising:-an electric machine (29) fixedly mounted on a stator part of the turbine engine and comprising an actuation shaft (21); -an axial piston hydraulic pump (20) adapted to pressurize a hydraulic fluid, the hydraulic pump comprising: a body (22) driven by the propeller (10); a barrel (23) housing a set of pistons (24), each piston comprising a sliding pad (25); and a disc (26) inclined with respect to the axis of rotation, on which each sliding pad is supported, the disc (26) and one of the cylindrical portions (23) being fixedly connected to a stator portion of the turbine engine, the other of the disc (26) and the cylindrical portions (23) being fixed to the actuating shaft (21) for common rotation.
本发明涉及一种用于涡轮发动机螺旋桨(10)的桨距改变机构,该桨距改变机构包括:‑电机(29),电机固定地安装在涡轮发动机的定子部分上并且包括致动轴(21);‑轴向活塞液压泵(20),轴向活塞液压泵适于对液压流体加压,液压泵包括:主体(22),主体由螺旋桨(10)驱动;筒部(23),筒部容纳有一组活塞(24),每个活塞包括滑动垫(25);以及相对于旋转轴线倾斜的盘(26),每个滑动垫支承在盘上,盘(26)与筒部(23)中的一者固定地连接到涡轮发动机的定子部分,盘(26)与筒部(23)中的另一者固定到致动轴(21)以共同旋转。
Pitch changing mechanism comprising improved electro-hydraulic actuator
包括改进的电动液压致动器的桨距改变机构
2024-02-02
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
Electro-hydraulic servo constant-speed variable-pitch propeller mechanism
European Patent Office | 2021
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