Helicopter coaxial double-umbrella rotor parallel driving device

Abstract

The invention relates to a helicopter coaxial double-parachute rotor parallel driving device. The helicopter coaxial double-parachute rotor parallel driving device comprises a rotor mechanism, a base, a movable table, a ball rod, three driving branches, a driving mechanism and a plurality of spring branches; and the rotor mechanism comprises a movable table, a mandrel, an inner sleeve, an outer sleeve, a pull rod group, an upper paddle group, a lower paddle group, an upper umbrella rod group, a lower umbrella rod group, a gear group and a lead screw motor. The upper and lower paddle groups are rotationally connected with the convex circular truncated cones of the inner and outer sleeves, and the movable table is rotationally connected with the inner and outer sleeves; the two ends of the three driving branches are hinged to the base and the movable table to drive the rotor mechanisms to swing to change the course; the engine is horizontally and fixedly connected with the engine base, and an engine shaft drives the inner sleeve and the outer sleeve to rotate forwards and backwards through the transverse shaft, the two bevel gears, the two bevel gears, the two transmission shafts and the gear group; the lead screw motor drives the paddle group to change umbrella angles through the mandrel, the pull rod group and the umbrella rod group; and the spring branches divert rotor loads to the engine base. The invention has the advantages of flexible course change, high navigational speed, large lift force, simple structure, good stability and the like.

Description

technical field [0001] The invention relates to the technical field of helicopters, in particular to a parallel drive device for helicopter coaxial double parachute rotors. Background technique [0002] The coaxial twin-rotor helicopter has become an advanced model leading the development of helicopters in the world today. The rotor system is the most characteristic and most critical symbolic part of the helicopter. [0003] In recent years, patents on the rotor system include: Chinese patent Cn108557070B discloses a small coaxial dual-rotor aircraft, which drives the swing arm of the steering gear and the long connecting rod to rotate through the rotation of the steering gear, and then changes the tilting direction of the swash plate, in order to achieve The aircraft flies in all directions; Chinese patent Cn101204992B discloses a helicopter coaxial dual-rotor speed differential device, in order to realize the yaw control of the coaxial dual-rotor helicopter; Chinese paten...

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, which is easy to be damaged and rotted; the blade cantilever is long, and it is easy to vibrate and generate noise; when changing the flight direction, the blade needs to rotate, wave, and swing every revolution. The complexity of the connection between the blade and the hub reduces the safety

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