Electric coaxial type unmanned helicopter transmission system

Abstract

The invention discloses an electric coaxial type unmanned helicopter transmission system. The electric coaxial type unmanned helicopter transmission system comprises an outer shaft, an inner shaft, abox, an outer shaft motor, an inner shaft motor, an outer shaft belt transmission device and an inner shaft belt transmission device, wherein the outer shaft belt transmission device is connected withthe outer shaft motor and the outer shaft, and the outer shaft belt transmission device is connected with the inner shaft motor and the inner shaft. The outer shaft is a hollow shaft, both ends of the outer shaft are each fixedly connected with a bearing seat, and the bearing seats are internally provided with bearings. The inner shaft is coaxially sleeved with the outer shaft, and the two ends,protruding out of the outer shaft, of the inner shaft are each sleeved with a bearing. The outer shaft is fixed to the middle portion in the box through a main loading-bearing plate, the outer shaft motor is fixed to the left end in the box by a mounting rib plate of the outer shaft motor, and the outer shaft motor is electrically connected with an outer shaft power supply. The inner shaft motor is fixed to the right end in the box by a mounting rib plate of the inner shaft motor, and the inner shaft motor is electrically connected with an inner shaft power supply. The electric coaxial type unmanned helicopter transmission system is light in weight, little in occupied space, low in noise and low in processing cost, and time of endurance of an unmanned helicopter is increased.

Description

technical field [0001] The invention relates to the technical field of aircraft, in particular to an electric coaxial unmanned helicopter transmission system. Background technique [0002] At present, the power of common unmanned helicopters is divided into electric and oil. Since oil-powered unmanned helicopters use gasoline as fuel, good engine characteristics can provide sufficient power for unmanned helicopters. This makes the oil-powered unmanned helicopter have the advantages of large load and long battery life. However, with these advantages, the oil-powered unmanned helicopter inevitably has some disadvantages, such as difficult manipulation, large vibration, and loud noise. At present, large-load unmanned helicopters at home and abroad are basically in the form of oil power, such as the unmanned helicopter FazerR of Yamaha Corporation of Japan, and the F-120 of the Helicopter Institute of Beijing University of Aeronautics and Astronautics. [0003] Compared with o...

AI Technical Summary

Problems solved by technology

The most noteworthy part is the design of the transmission mechanism. At present, the mainstream transmission mechanism is gear transmission. The advantages of gear transmission are stable transmission ratio, long life and high reliability. The disadvantages are large vibration, large noise and weight. Large, requiring high processing cost and processing accuracy

However, the unmanned helicopter adopts the form of gear transmission, which will greatly increase the weight of the body, and increase the vibration and noise of the whole machine. At the same time, the oil-driven unmanned helicopter will cause the vibration and noise of the whole machine to be extremely large due to the engine, and the control is stable. Sex is not enough

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