A marine tandem propeller

Abstract

The invention discloses a marine tandem propeller, which comprises a bracket, a conduit, a power part, a pressure part and an electric part. A gear groove is arranged on the inner peripheral wall of the conduit, and the transmission gear and the first The first edge hub gear on the edge hub is externally engaged for transmission; the transmission gear is externally engaged for transmission with the second edge hub gear arranged on the second edge hub. In the present invention, the pressure difference on both sides of the baffle in the air pressure chamber pushes the baffle to rotate, thereby driving the baffle, the first edge hub and the first paddle to rotate, and then the first edge hub drives the second edge through the transmission gear. The hub rotates in the same direction, so that the first paddle and the second paddle rotate in the same direction, and jointly push the water flow backward to provide forward thrust, which has the advantages of small footprint, light weight, and low cost. Moreover, the impact on the performance of the front and rear propellers caused by the installation of the tandem propellers on the same rotating shaft is solved, and the propulsion performance is improved.

Description

technical field [0001] The invention relates to the technical field of marine propellers, in particular to a marine tandem propeller. Background technique [0002] The existing tandem propellers are mainly located at the stern of the ship, and adopt the axial propulsion layout. The front and rear propellers are installed on the same rotating shaft, which is easily affected by the uneven wake of the stern, thus adversely affecting the performance of the front and rear propellers. In addition, the axial propulsion method occupies a large cabin space, and the layout is not flexible. However, the new type of rim propeller directly drives the blades to rotate through the rim motor inside the duct. The rim motor has the disadvantages of large weight and high cost, which reduces its overall performance. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the present invention provides a marine tandem propeller, which solves the adverse effects on the ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the present invention provides a marine tandem propeller, which solves the adverse effects on the performance of the front and rear propellers caused by the installation of the existing tandem propellers on the same rotating shaft, as well as large space occupation and heavy weight , The disadvantages of high cost are as follows:

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