Helicopter coaxial double rotor two-turn three-shift parallel drive device

Abstract

The invention relates to a parallel driving device for two rotations and three shifts of coaxial double rotors of a helicopter, comprising a rotor mechanism, a moving table, a machine base, two PSS-type driving rods, a PUU-type driving rod, two rotating transmission shafts, two engines and Spring; rotor mechanism includes moving table, mandrel, inner and outer casing, tie rod group, upper and lower blade group, upper and lower connecting rod group, gear group and auxiliary electric rod; upper and lower blade group and coaxial inner and outer casing The cam table is rotationally connected, and the moving table is rotationally connected with the inner and outer casings; both ends of the three drive rods are hinged with the moving table and the base to drive the rotor mechanism to swing and expand; the engine is fixedly connected to the base, and both ends of the rotating transmission shaft are connected to the engine The input shaft of the shaft and gear set drives the forward and reverse rotation of the inner and outer casings; the auxiliary electric rod drives the blade group to tilt by itself through the lead screw, the core rod, the tie rod group and the connecting rod group; the spring driven table shunts the rotor load to the base. The invention has the advantages of fast speed, large lift, balanced counter-torque, the engine is mounted on the base, the structure is simple, and the stability is good.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a parallel driving device for two-rotation and three-shift parallel rotors with coaxial twin-rotors. Background technique [0002] Compared with the traditional single-rotor helicopter, the coaxial twin-rotor helicopter has many advantages, and has become an advanced model leading the development of helicopters in the world today. The rotor system is the most characteristic and key iconic part of the helicopter. [0003] In recent years, patents on rotor systems include: Patent CN101961559B discloses a model helicopter rotor support device, which uses V-shaped brackets to absorb shock waves generated by the helicopter, in order to reduce the tremor of the helicopter body; Patent CN101204992B discloses a helicopter coaxial Double rotor speed differential device, in order to realize the yaw control of coaxial double rotor helicopter; patent CN101376433B discloses a helicopter ...

AI Technical Summary

Problems solved by technology

[0004] The above-mentioned existing technologies have their own characteristics, but the existing helicopter rotor technology still has the following inherent defects: the rotor heading control mechanism is complicated, the components are too many, and the transmission chain is long; the coaxial double rotor heading control mechanism is more complicated; The components are exposed outside the cabin, and the waste resistance area is large, easy to vibrate and be damaged; when the helicopter is tilted, the bending moment of the helicopter's own weight on the rotor main shaft is relatively large, and the bearing capacity of the ball bearing of the rotor main shaft is weak, which is not suitable for high-speed rotation; The main shaft swings synchronously, the flight flexibility is poor, and people are prone to dizziness; the bevel gear driving the coaxial dual-rotor forward and reverse has high noise, large vibration, complex manufacturing, low load capacity, and easy wear

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