Coaxial counter-rotating twin-propeller device based on ring motor and its realization method

Abstract

The invention discloses a coaxial different-direction dual-propeller device based on annular motors and a realization method thereof. The device comprises the two annular motors which are symmetrically arranged on the two sides of propellers and are of the same structure, both the annular motors comprise motor stators in a hollow cylinder shape, coils are wound around the outer walls of the motor stators, and the inner walls of the motor stators are fixedly connected with outer rings of bearings; each motor rotor is composed of two barrel-shaped structures embedded into each other and an annular structure, the internal barrel-shaped structures penetrate through the centers of the bearings and are fixedly connected with the inner rings of the bearings, the motor stators are sleeved with the external barrel-shaped structures, magnetic pieces are inlaid into the inner walls, the motor stators, the motor rotors and the bearings are of symmetrical structures, and the symmetry axes of the motor stators, the motor rotors and the bearings coincide with one another; the centers of H-type structural supports penetrate through the motor rotors and the centers of the bearings, and the two sides of the H-type structural supports are fixedly connected with the motor stators; the annular-structure bottoms of the motor rotors of the two annular motors are fixedly connected with the two propellers. The invention further discloses a method for realizing rotating through the device. The device can easily achieve multi-propeller coaxial design, and has the advantages of being simple in structure, high in reliability and easy to realize.

Description

technical field [0001] The invention relates to the technical field of propellers, in particular to a coaxial counter-rotating double propeller device based on a ring motor and an implementation method thereof. Background technique [0002] If the underwater vehicle is propelled by only a single propeller, the reaction force of the water acts on the blade, in addition to generating the driving force to make the vehicle move forward, it will also generate a rotational moment in the circumferential direction. Therefore, it is also difficult to maintain the forward attitude of the aircraft, thereby affecting the forward movement of the aircraft and the overall propulsion efficiency of the system. Therefore, torpedoes or long-range self-propelled mines propelled by propellers mostly have a dual-propeller structure, and the two propellers are located on the same axis, and it is particularly required that the two sets of propellers rotate in opposite directions at the same speed a...

AI Technical Summary

Problems solved by technology

[0006] 2. The contra-rotating propeller is driven by a single conventional AC or DC motor + complex planetary gear transmission system. The complex gear reducer transmission system must not only realize mechanical deceleration, but also complete the input from one mechanical port to two mechanical The "mechanical fission" output by the mouth, and then directly drive the counter-rotating propeller to rotate through the inner and outer propulsion shafts, resulting in a relatively complicated mechanical transmission part and low mechanical transmission efficiency

Compared with the first two cases, the system structure is simplified to a certain extent, and the volume and weight are reduced to a certain extent. However, with the commutator, slip ring and two sets of brush devices, on the one hand, the reliability of the motor is greatly reduced. On the other hand, the cost of the motor is high, the structure is still complicated, and the external mechanical stator purely used for mechanical support makes the volume of the motor still large

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