The invention provides a coaxial type unmanned helicopter main driving structure, belongs to the technical field of air vehicles, and aims at solving the problems in the prior art that a main driving chain is long, the transmission is not stable and the volume mass is great. A synchronized reversing mechanism comprises an inner shaft, an outer shaft, an inner sleeve assembly, an outer sleeve assembly and a driving bracket, wherein the inner shaft and the outer shaft are hollow shafts, and are coaxially sleeved; the outer sleeve assembly is fixedly connected with the outer shaft; the inner sleeve assembly is fixedly connected with the inner shaft; a roller which is positioned by the driving bracket is arranged between the inner sleeve assembly and the outer sleeve assembly; the inner sleeve assembly and the outer sleeve assembly are in eccentric structures; the roller is tangent to the inner ring surface of the outer sleeve assembly and the outer ring surface of the inner sleeve assembly respectively; the upper end of the inner shaft is fixedly connected with an upper rotor wing mechanism, and the upper end of the outer shaft is fixedly connected with a lower rotor wing mechanism; the upper rotor wing mechanism and the lower rotor wing mechanism commonly provide a lifting force; the lower end of the inner shaft is fixedly connected with an output shaft of a brushless motor by a plum-blossom-shaped shaft coupler; and the lower end face of the brushless motor is fixedly connected with the lower end face of a main supporting frame.
Coaxial type unmanned helicopter main driving structure
2015-05-27
Patent
Electronic Resource
English
IPC: | B64C AEROPLANES , Flugzeuge |
Unmanned helicopter and main rotor driving method thereof
European Patent Office | 2023
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