A transmission mechanism of a two-stage flapping-wing aircraft

Abstract

The invention discloses a transmission mechanism of a two-stage flapping wing aircraft, which comprises a motor, a frame middle plate, a frame rear plate, a pair of cranks, a pair of final gears, a secondary gear shaft, a secondary double gear, and a primary gear. , a pair of final drive shafts. In the transmission mechanism of the double-stage flapping wing aircraft of the present invention, the final gear and the crank of the flapping mechanism are respectively fixed to the final transmission shaft through bolts, and both ends of the final gear are supported, so that the two final gears are easily and easily stressed. reliable. The invention solves the problem that the final gear is supported by a traditional cantilever, which is easy to slip and has low limit power; compared with the common fixed connection between the final gear and the crank of the flutter mechanism, the final gear is separated from the crank of the flutter mechanism , the stress on the final gear and the crank is relatively simple, which makes the deformation of the crank smaller, and the flapping action is less affected by the elastic deformation of the material, making the flapping action closer to the theoretical design state.

Description

technical field [0001] The invention relates to a flapping mechanism, in particular to a two-stage flapper transmission mechanism. Background technique [0002] The dual-segment flapping-wing aircraft is a further bionic flying robot. It has the characteristics of high flight efficiency, low noise, strong bionic shape, and good flexibility. It is widely used in military, civil and other technological fields. All have broad prospects for development. [0003] In nature, the flight movements of birds that fly long distances can be divided into four stages: down, folded, up, and flat, and flapping in this cycle. During the flapping process, the wings are swayed up and down, and the wings are folded before the upper flap, which can effectively reduce the resistance of the upper flap and reduce the energy consumption; [0004] Although the double-segment flapping wing has the advantage of reducing energy consumption and improving energy utilization during the up-flying process,...

AI Technical Summary

Problems solved by technology

However, the use of cantilever support will make the gear fixing unreliable. During the flight, due to the impact load, the rigidity of the rotating shaft is very high. If the shaft rigidity is too small, it is easy for the two driven gears to slip, which makes the phase of the left and right wings out of sync; Due to insufficient gear meshing capacity and small bearing capacity, the ultimate output power of the mechanism is limited

The crank and the driven gear in the gear set are fixed, and the force on the gear is more complicated. At the same time, the crank has a certain deformation, which makes the actual flutter action deviate from the theoretical flutter, and intensifies the requirement for the stiffness of the shaft.

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