Double-oar square-tube marine propulsor device

Abstract

A double-oar square-tube marine propulsor device relates to a ship propulsor. The double-oar square-tube marine propulsor device comprises a left main shaft, a left propeller, a right main shaft, a right propeller and a square-tube-shaped housing. The left main shaft is mounted on the left plate of the square-tube-shaped housing through a bearing. The left end of the left main shaft is oriented to the left front direction and is arranged at the left outer side of the square-tube-shaped housing, and the right end is connected with the left propeller in the square-tube-shaped housing. The left propeller and the right propeller are symmetrical in a left-and-right direction. An included angle between the rotating plane of the left propeller and the rotating plane of the right propeller is smaller than 150 DEG. The rotating plane of the left propeller is perpendicular with the top board and the base board of the square-tube-shaped housing. The square-tube-shaped housing is in compact matching with the left propeller and the right propeller. A power is transmitted to the left propeller and the right propeller respectively through the left main shaft and the right main shaft. The rotation directions of the left propeller and the right propeller are opposite. Compared with a traditional marine propulsor, the double-oar square-tube marine propulsor device has advantages of higher efficiency and small resistance when a same flow is realized.

Description

technical field [0001] The utility model relates to a ship propulsion device with two propellers and a square tube, relating to a ship propulsion device, in particular to a square tube ship propulsion device. Background technique [0002] The traditional barreled propeller propeller is cylindrical, and the rotation plane of its blades is basically perpendicular to the opening direction of the casing. The cross-sectional area is large and the resistance is relatively large, especially at high speed. Due to the use of a single propeller, the rotation The button torque is large and the stability is poor. Contents of the invention [0003] The purpose of the present invention is to overcome the shortcomings of the above-mentioned prior art and provide a square-tube ship propulsion device with two propellers that has less resistance and the torque of the buttons cancels each other out. [0004] The technical solution of the present invention is: a double propeller square tube ...

AI Technical Summary

Problems solved by technology

[0002] The traditional barreled propeller propeller is cylindrical, and the rotation plane of its blades is basically perpendicular to the opening direction of the casing. The cross-sectional area is large and the resistance is relatively large, especially at high speed. Due to the use of a single propeller, the rotation Large button torque, poor stability

Images