360-degree all-revolving shipping pairing rotating paddle propulsion unit

Abstract

The invention provides a contra-rotating propeller plant of a 360-degree rotating ship. The core of the contra-rotating propeller plant is contra-rotating propeller technology for use when the speed of an inland river small ship propeller is lower. The contra-rotating propeller plate is innovated and developed according to the current ship situation in China. Tests and sailing practices of a plurality of ships in more than ten years show that the contra-rotating propeller plant can save 8 to 10 percent of energy, is safe in navigation and increases the sailing speed and propelling speed by about 10 percent. On basis of serial products, a contra-rotating propeller theoretical graph lacking in China before is made through innovation. The invention adopts a direct drive mode to improve the energy-saving index by 1 to 2 percent. The inside of the plant is provided a hydraulic clutch system, so the plant achieves reliable operation, reduces noises and expanses power range. A cellular type sealing cover support having a sealing piece and an elastic element allows an engine and the entire machine to be arranged in a cabin (together with a spiral bevel gear and environmentally-friendly lubricating oil used in the machine) solves the problems of noises and environment protection, absorbs propelling force and vibration, and exerts a cushion and protection effect on the entire machine. The product is light in weight, low in cost, small in dimension, novel in structure, convenient in installation and maintenance and suitable to be used various ships sailing in the inland river, and is a ship propelling unit which is higher in efficiency, energy-saving and environmentally-friendly.

Description

technical field [0001] The present invention relates to a power propulsion device for a motor ship, in particular to a ship propulsion device which has the best propulsion and maneuvering effect of 360° full rotation and adopts the world's advanced counter-rotating propeller technology which can save a lot of power (energy saving). [0002] Using counter-rotating propellers, because the energy lost by the rotation of the front propellers is absorbed by the rear propellers to generate more energy, the thrust is almost horizontal and straight to drive the ship forward, so the counter-rotating propellers can save a lot of fuel (up to 14%) and increase the speed by 10 %, improve the propulsion efficiency by 8-10%. Because the present invention adopts the direct-connection transmission mode, the mechanical loss is reduced, so the above-mentioned improvement is further increased by 1-2%. Therefore the purpose of the present invention is to provide the ship owner with a higher effic...

AI Technical Summary

Problems solved by technology

From the perspective of cost, traditional propulsion devices have a stern shaft and stern tube system of 1.5-3m, so the weight is heavy and the cost is high

In addition, the noise and vibration of the gearbox are large, the transmission power loss of the gear is large, the bearing load is large, and the structure is complex.

More importantly, traditional technology (that is, gearbox) is difficult to achieve the working mode and technical requirements of counter-rotating propellers.

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