Magnetic coupling steering device used underwater

Abstract

The invention relates to a magnetic coupling steering device used underwater. According to the magnetic coupling steering device, frictional losses of a conventional motive seal steering mode are reduced, meanwhile, the water leakage risk caused by abrasion of a sealing ring is avoided, and the reliability of the device is improved. The magnetic coupling steering device used underwater comprises a rudder body, a driving device, a magnetic coupling device and rudder blades rotationally connected with the rudder body. The driving device is arranged on the rudder body. The magnetic coupling device comprises a mounting base, an input shaft, a driven magnetic rotor, an output piece and a driving magnetic rotor. The mounting base is arranged on the rudder body. The driving magnetic rotor and the driven magnetic rotor are rotationally connected with the mounting base. One end of the input shaft is fixedly connected with the driving magnetic rotor, and the other end of the input shaft extends to the outside of the mounting base and is connected with the driving device through a transmission unit. One end of the output piece is fixedly connected with the driven magnetic rotor, and the other end of the output piece extends to the outside of the mounting base and is connected with the rudder blades through a transmission rod.

Description

Technical field [0001] The invention belongs to the technical field of electromechanical integration, and particularly relates to a magnetic coupling steering device used for underwater. Background technique [0002] At present, most autonomous underwater vehicles use rudders to control the heading and attitude angles. The conventional rudder steering device relies on a contact dynamic seal to transmit the torque in the sealed cavity to the rudder blade outside the sealed cavity to realize the rotation of the rudder blade. In this contact type dynamic seal, the rotating shaft and the stationary seal ring are in contact with and rotate relative to each other with a certain pre-pressure, because the friction between the two will inevitably cause friction power loss. In addition, after long working hours, the sealing ring will wear out and there is a risk of water leakage. Because the rudder blade protrudes outside the main body of the vehicle, it is easy to damage the rudder stee...

AI Technical Summary

Problems solved by technology

In this kind of contact dynamic seal, the rotating shaft and the stationary sealing ring are in contact with a certain pre-pressure and rotate relatively, because there must be frictional power loss due to the friction between the two.

In addition, after a long working time, the sealing ring will be worn out, and there is a risk of water leakage

Since the rudder blade protrudes from the main body of the vehicle, it is easy to damage the rudder steering device due to collision. In this case, the entire underwater vehicle also has the risk of water leakage

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