Shaftless propeller

Abstract

The invention discloses a shaftless propeller which comprises a shell, a rotor and two end caps. A stator and Hall sensors are fixedly mounted inside the shell, the rotor comprises blades, permanent magnets and a ring, the blades are fixedly mounted inside the ring, the permanent magnets are embedded inside the ring, the stator comprises a silicon steel sheet combination and a coil uniformly and compactly wound on the silicon steel sheet combination, circuits of the Hall sensors and the coil are gathered and connected together through a wiring port, an embedding groove is formed in each of twosides of the ring, a bearing is arranged inside each embedding groove, and a sealing groove corresponding to the corresponding embedding groove is formed in the inner side of each of the two end caps. Therefore, occupied space is small, and space utilization rate is increased; the shaftless propeller is compact in structure, high in energy utilization rate and good in lubricating effect and cooling effect, wear in the process of transmission is reduced, and structural complexity of the shaftless propeller is lowered, so that actual using cost is lowered.

Description

technical field [0001] The invention relates to the technical field of propellers, in particular to a shaftless propeller. Background technique [0002] Most of the existing propellers drive the propeller blades to rotate through the output shaft of the motor to play the role of propulsion. In recent years, with the strengthening of trade among countries in the world, the volume of sea freight has increased, and the number and tonnage of ships have also increased. However, with the development of large-scale ships, the traditional ship propulsion system has gradually shown its disadvantages and cannot better meet the work requirements. In a traditional propulsion system, the main engine, propulsion shafting, propeller, etc. are indispensable devices, and as the power of the main engine unit increases, its volume also increases, and the length of the propulsion shafting increases to tens of meters Even 100 meters, part of the cabin is occupied, resulting in low space utiliz...

AI Technical Summary

Problems solved by technology

[0004] (1) As the power of the main engine unit increases, its volume also increases, and the length of the propulsion shafting increases to tens of meters or even hundreds of meters. Part of the cabin is occupied, resulting in low space utilization;

[0005] (2) Due to the increase in the length of the propulsion shafting, the structure is becoming more and more complex, which increases the design difficulty and maintenance cost of the ship;

[0006] (3) Due to the increase in the length of the propulsion shafting and the existence of the sealing system, the loss increases during the energy transmission process, the transmission efficiency decreases, and the use cost is increased

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