The propeller pitch changing mechanism comprises a propeller shell, a propeller blade assembly, a shifting fork assembly, an oil cylinder, a piston assembly, a reverse propeller rod and a check ring, and a pitch changing rod is slidably connected to the middle of the propeller shell; the paddle assembly is rotationally connected to the peripheral side of the paddle shell; the shifting fork assembly is fixedly connected to the pitch changing rod to drive the blades to change the pitch. The oil cylinder is fixedly connected to the outer side of one end of the propeller shell; the piston assembly is connected to an inner hole of the oil cylinder in a sliding mode, a space defined by the piston assembly, the propeller shell and the oil cylinder forms a small-distance oil cavity, and an oil way hole is formed in the variable-distance rod and communicated with the small-distance oil cavity. The reverse paddle rod is slidably connected to the paddle shell; the check ring is fixedly connected with one end of the reverse paddle rod, a reverse paddle spring is arranged on the outer side of the reverse paddle rod and corresponds to the position between the check ring and the paddle shell, the end, corresponding to the strain small-distance stroke, of the shifting fork assembly abuts against a reverse paddle rod sleeve on the reverse paddle rod to drive the reverse paddle rod to move axially, and the single-oil-way control type reverse paddle paddle is simple in structure, controlled through a single oil way, small in size and light in weight.
本发明公开了一种螺旋桨变距机构,其包括桨壳、桨叶组件、拨叉组件、油缸、活塞组件、反桨杆及止动环,桨壳的中部滑动连接有变距杆;桨叶组件转动连接在桨壳的外周侧;拨叉组件固定连接在变距杆上带动桨叶变距;油缸固定连接在桨壳的一端外侧;活塞组件滑动连接在油缸的内孔,活塞组件、桨壳及油缸围成的空间形成小距油腔,变距杆上设有油路孔且与小距油腔连通;反桨杆滑动连接在桨壳上;止动环与反桨杆的一端固定连接,反桨杆的外侧且对应止动环与桨壳之间设有反桨弹簧,拨叉组件对应变小距行程的端部与反桨杆上的反桨杆套抵接带动反桨杆轴向移动,本发明结构简单,单油路控制,小型化轻量化。
Propeller pitch changing mechanism
一种螺旋桨变距机构
2024-05-14
Patent
Elektronische Ressource
Chinesisch
IPC: | B64C AEROPLANES , Flugzeuge |
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