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

Abstract

The invention relates to a helicopter coaxial twin-rotor two-turn and three-shift parallel drive device, which includes a rotor mechanism, a moving platform, a machine base, two PSS-type drive rods, a PUU-type drive rod, two rotating transmission shafts, two engines and Spring; rotor mechanism includes moving platform, spindle, inner and outer jackets, tie rod group, upper and lower blade groups, upper and lower connecting rod groups, gear group and auxiliary electric rod; upper and lower blade groups and coaxial inner and outer jackets The convex circular table is rotationally connected, and the moving table is rotationally connected with the inner and outer jackets; the two ends of the three driving rods are hinged with the moving table and the machine base, driving the rotor mechanism to swing and telescope; the engine is fixedly connected with the machine base, and the two ends of the rotating transmission shaft are connected to the engine. The input shaft of the shaft and gear set drives the inner and outer casings to rotate forward and reverse; the auxiliary electric rod drives the blade set to self-tilt through the screw, core rod, tie rod group and connecting rod group; the spring driven platform diverts the rotor load to the machine base. The invention has the advantages of fast speed, large lift, balanced reaction torque, the engine is installed on the base, simple structure and good stability.

Description

Technical field [0001] The invention relates to the technical field of helicopters, and in particular to a two-rotation and three-shift parallel drive device for a helicopter's coaxial twin rotors. Background technique [0002] Compared with traditional single-rotor helicopters, coaxial twin-rotor helicopters have many advantages and have become an advanced model leading the development of helicopters in the world today. The rotor system is the most distinctive and critical iconic component of the helicopter. [0003] In recent years, patents on rotor systems include: Patent CN101961559B discloses a model helicopter rotor support device that 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 coaxial helicopter Dual-rotor speed differential device, in order to realize yaw control of coaxial dual-rotor helicopters; patent CN101376433B discloses a helicopter rotor contro...

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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