The invention relates to a fan rotor with variable pitch blades, comprising a rotor disc equipped with a plurality of rotary fasteners (16) on the periphery of the rotor disc, each fastener (16) comprising a unit (17) for receiving a root (150) in a blade (15). The rotor is characterised in that an elongated wedge (2) and a prestressed rod (3) having at least one cam (33) are also arranged in each unit (17), the bottom of the unit (17) comprising as many retraction cavities (173) as the rod (3) comprising the cam (33), the prestressed rod (3) being inserted between the wedge (2) and said bottom (171) of said unit (17) such that said cam (33) faces the corresponding retraction cavity (173), and the prestressing rod (3) is rotatable about a longitudinal axis (X2-X '2) of the prestressing rod between an rest position, in which the cam (33) is housed in the retraction cavity (173), and a stressed position, in which the cam (33) exerts a radial pressure on the central region (22) of the wedge (2) to move the wedge (2) towards the blade root (150).
本发明涉及一种具有可变桨距叶片的风扇转子,该风扇转子包括转子盘,转子盘在转子盘的外周配备有多个旋转紧固件(16),每个紧固件(16)包括用于接纳叶片(15)中的根部(150)的单元(17)。该转子的特征在于,细长的楔形件(2)和具有至少一个凸轮(33)的预应力杆(3)也被布置在每个单元(17)中,单元(17)的底部包括与杆(3)包括凸轮(33)一样多的回缩腔(173),预应力杆(3)被插入在楔形件(2)和所述单元(17)的所述底部(171)之间,使得所述凸轮(33)面对对应的回缩腔(173),并且预应力杆(3)能够在安歇位置和受胁迫位置之间围绕预应力杆的纵向轴线(X2‑X’2)旋转,安歇在安歇位置,凸轮(33)被容纳在缩回腔(173)中,在受胁迫位置,凸轮(33)在楔形件(2)的中心区域(22)上施加径向压力,以使楔形件(2)朝向叶片根部(150)移动。
Fan rotor with variable pitch blades and turbine equipped with such rotor
具有可变桨距叶片的风扇转子和配备有这种转子的涡轮机
2022-11-22
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge / B64D Ausrüstung für Flugzeuge , EQUIPMENT FOR FITTING IN OR TO AIRCRAFT / F01D Strömungsmaschinen [Kraft- und Arbeitsmaschinen oder Kraftmaschinen], z.B. Dampfturbinen , NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES / F04D Strömungsarbeitsmaschinen , NON-POSITIVE-DISPLACEMENT PUMPS |
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