Coaxial dual-propeller mechanism capable of achieving synchronous folding of paddles

Abstract

The invention discloses a coaxial dual-propeller mechanism capable of achieving synchronous folding of paddles. A mounting bracket is provided with a motor, a rotary reversing gear assembly and a coaxial dual-propeller part, and the coaxial dual-propeller part comprises a forward foldable propeller, a reverse foldable propeller, an inner shaft and an outer shaft tube; a linkage rotation mechanismis arranged between the end of the outer shaft tube and the inner shaft, the inner shaft and the outer shaft tube are coaxially embedded, one of the inner shaft and the outer shaft tube drives the forward foldable propeller, the other of the inner shaft and the outer shaft tube drives the reverse foldable propeller, and the output end of the motor is directly connected with the inner shaft, and connected with the outer shaft tube through the rotary reversing gear assembly. By means of the coaxial dual-propeller mechanism, the moment when an aircraft enters water, the propellers can be folded,the impact force can thus be reduced, and the use of the coaxial dual propellers offsets the torque generated when the propellers rotate; meanwhile, through synchronization of folding angles of the propellers, the probability of collision generated when the dual-propeller mechanism rotates relatively is also avoided, and the propelling requirement of an underwater-aerial amphibious aircraft is metto a certain degree.

Description

technical field [0001] The invention relates to a water-air amphibious aircraft, in particular to a coaxial double-blade mechanism capable of synchronous folding of blades, which can realize synchronous folding of blades and conversion from one-way rotation to two-way rotation. Background technique [0002] Compared with the single-propeller mechanism, the coaxial double-propeller component can offset the layout produced when the propeller rotates, and is more conducive to the attitude control of the aircraft. It has been widely used as a helicopter power system. [0003] Water-air amphibious vehicles have attracted people's attention in recent years because of their better maneuverability and concealment. As a common propulsion method, propellers are naturally widely used in water-air amphibious vehicles. Since the amphibious aircraft travels between water and air, and the physical properties of water and air are very different (for example, the density differs by more than...

AI Technical Summary

Problems solved by technology

Since the amphibious aircraft travels between water and air, and the physical properties of water and air are very different (for example, the density differs by more than 800 times), a huge impact force will be generated at the moment the aircraft crosses. In this case, the conventional propeller difficult to meet demand

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