The invention relates to a hinge-free variable-pitch propeller hub, a helicopter rotor wing and a helicopter, belongs to the technical field of helicopters, and solves the problem that the flight speed of the helicopter is restricted due to the fact that rotor wing shimmy cannot be efficiently absorbed and blades stall in the flight process of the helicopter. The hinge-free variable-pitch propeller hub comprises a propeller hub central shell and a propeller hub variable-pitch component, the propeller hub variable-pitch component is connected to the peripheral side of the propeller hub central shell; the propeller hub variable-pitch component comprises a propeller clamp shell, a variable-pitch transmission assembly, a variable-pitch hinge supporting piece and a variable-pitch pull rod assembly. The variable-torque transmission assembly is limited between the propeller clamp shell and the variable-torque hinge supporting piece. The near ends of the paddle units are connected to the interiors of the variable-pitch hinge supporting pieces; the variable-pitch pull rod assembly is arranged in the propeller hub central shell and drives the variable-pitch hinge supporting piece to rotate, and the propeller blade units conduct variable-pitch movement along with the variable-pitch pull rod assembly. According to the helicopter rotor and the helicopter, centrifugal force and shimmy of the blade units can be efficiently absorbed, the rigidity of the propeller hub is reduced, and the resonance risk of the helicopter rotor and the helicopter is avoided.
本发明涉及一种无铰式变距桨毂、直升机旋翼及直升机,属于直升机技术领域,解决了直升机飞行过程中旋翼摆振无法被高效吸收,桨叶失速,进而制约直升机飞行速度的问题。本发明的无铰式变距桨毂包括桨毂中央壳体和桨毂变距部件;桨毂变距部件连接在桨毂中央壳体外周侧;桨毂变距部件包括桨夹壳体、变矩传动组件、变距铰支撑件和变距拉杆组件;变矩传动组件限位在桨夹壳体和变距铰支撑件之间;桨叶单元的近端连接在变距铰支撑件内部;变距拉杆组件设置在桨毂中央壳体内部并带动变距铰支撑件旋转,桨叶单元随之做变距运动。本发明的直升机旋翼及直升机能够高效吸收桨叶单元离心力和摆振,降低桨毂刚度,避免直升机旋翼及直升机产生共振风险。
Hingeless variable pitch propeller hub, helicopter rotor wing and helicopter
一种无铰式变距桨毂、直升机旋翼及直升机
2023-11-24
Patent
Electronic Resource
Chinese
IPC: | B64C AEROPLANES , Flugzeuge |
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