underwater propeller propulsion

Abstract

The invention relates to an underwater propeller propelling device which comprises a driving motor, a propeller, a motor adapter part, an end cover, a driving device and a sealing device. The driving device comprises a rotating shaft, a first bearing, a second bearing and a driving auxiliary structure. The driving auxiliary structure comprises a bearing washer A and a bearing washer B. The rotating shaft is provided with shaft shoulders, and the second bearing and the first bearing are axially clamped on the rotating shaft through the shaft shoulders. The end where the output shaft of the driving motor is fixed to the motor adapter part, the motor adapter part is fixed to the end cover, the bearing washer A is arranged between the motor adapter part and the first bearing, and the first bearing and the end non-adjacent to the bearing washer A are axially clamped in the end cover through the first shaft shoulder of the rotating shaft. One end of the second bearing is pressed by the bearing washer B through a fixing device, and the other end of the second bearing is clamped on the second shaft shoulder of the rotating shaft. The sealing device is arranged between the first bearing and the second bearing, and the first bearing and the second bearing are arranged to respectively provide axially adverse axial restraining forces for the rotating shaft.

Description

technical field [0001] The invention relates to the field of electromechanical integration, in particular to an underwater propeller propulsion device. Background technique [0002] The underwater propeller propeller is the main device for the movement of underwater vehicles or robots, and its function is to provide navigation thrust or control attitude. At present, the bearing design of existing underwater propeller propellers often adopts single bearing support. When such support rotates at high speed, the rotating shaft is easy to run out radially, which will cause excessive wear of the dynamic seal. The stability of the shaft has been improved, and its rotating shaft can only bear a large thrust in a single axial direction. If the propeller is reversed, the ability of the bearing group to withstand the reverse thrust will be greatly reduced. In addition, many propellers currently on the market have many defects in terms of sealing design and thrust-to-mass ratio, which ...

AI Technical Summary

Problems solved by technology

At present, the bearing design of existing underwater propeller propellers often adopts single bearing support. When such support rotates at high speed, the rotating shaft is easy to run out radially, which will cause excessive wear of the dynamic seal. The stability of the shaft has been improved, and its rotating shaft can only bear a large thrust in a single axial direction. If the propeller is reversed, the ability of its bearing group to withstand reverse thrust will be greatly reduced

In addition, many propellers currently on the market also have many defects in terms of sealing design and thrust-to-mass ratio, which cannot meet the requirements of underwater equipment for underwater high-performance propellers

Images