Gear rack pair flapping wing driving mechanism based on externally-meshed planetary gear reducer

Abstract

The invention provides a gear rack pair flapping wing driving mechanism based on an externally-meshed planetary gear reducer. The mechanism comprises a machine frame, a motor, a parallel gear reducer,an externally-meshed planetary gear reducer, a cover plate and a gear rack pair connecting rod rocker mechanism, wherein the motor is mounted on the machine frame to drive the parallel gear reducer;the externally-meshed planetary gear reducer is mounted in an internal space formed by the lower half part of the machine frame and the cover plate through a crank shaft hole and a transmission shafthole; the parallel gear reducer drives the externally-meshed planetary gear reducer through a transmission shaft; and the externally-meshed planetary gear reducer is connected with the gear rack pairconnecting rod rocker mechanism through a crank to drive a flapping wing. The externally-meshed planetary gear reducer is utilized to realize compact structure and large reduction ratio, the output torque of the mechanism is improved, the transmission efficiency is high and relatively stable, and the gear rack pair connecting rod rocker arm mechanism is utilized to ensure absolute symmetry of flapping wing movement of the mechanism, so that the flight reliability of an aircraft is greatly improved.

Description

technical field [0001] The invention relates to a flapping-wing driving mechanism, which can be applied to a miniature flapping-wing aircraft. Background technique [0002] Compared with fixed-wing aircraft, micro flapping-wing aircraft can make flight more flexible and efficient by imitating the movement of birds, coupled with its small size and light weight, it can be widely used in various military and civilian fields. Since the flapping wing aircraft mainly generates lift and forward force through the active movement of the wings, how to reasonably design the flapping wing drive mechanism to make the flight aerodynamic efficiency and reliability higher has become the focus of research. [0003] The current flapping wing drive mechanism mainly has the following types: [0004] China Patent Authorization Announcement No. CN102267566A, named as a utility model patent for a continuously variable flapping wing drive mechanism, discloses a stepless speed reduction device that...

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Problems solved by technology

[0008] In order to overcome the lack of flight stability and reliability in the prior art, this paper provides a rack and pinion flapping-wing drive mechanism based on an external meshing planetary gear reducer, which can meet the flight reliability and is suitable for micro-flapping-wing aircraft. application

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