Oar body and screw propeller with same

Abstract

The invention relates to an oar body comprising an oar hub and a plurality of oar blades connected to the oar hub. The oar body is characterized in that wheel rims are formed at the peripheries of the oar blades; gear teeth distributed along the circumferential direction are formed on the peripheral walls of the wheel rims; and two ends of the oar hub are conical streamline forms. The oar body has the advantages that the conventional rotating shaft structure is cancelled, one wheel rim is formed outside each oar blade, so that the rotation mode of the oar blades is changed from rotating shaft rotation in a rotation torque transmission method into wheel rim rotation, the oar blades of a screw propeller are rotated by engagement of gears on the wheel rim instead of rotation of a rotating shaft, a main engine of a ship and the screw propeller can be connected without a mechanical rotating shaft, and a propelling device without the rotating shaft is provided for the ship, thus the technical problem of the rotating shaft of a large ship is solved, and a cabin of the ship can be designed more flexibly; in addition, the oar blades are driven to rotate by using a gear engagement mode, the output power of the screw propeller can be greatly reduced under the same power, and therefore, the work efficiency of the ship is improved, the energy consumption is reduced, and the purpose of saving energy is achieved.

Description

technical field [0001] The invention relates to a paddle body and a propeller equipped with the paddle body. Background technique [0002] Propeller refers to a device that rotates the blades in the air to convert the rotational power of the engine into propulsion, or has two or more blades connected to the hub, and the rear side of the blade is a helical surface or a part similar to the helicoidal surface A marine propeller. In the prior art, for example, the Chinese utility model patent "Disc Propeller" with the patent number of ZL201110137505.9 provides a disc propeller, which includes a blade, a connecting body of a rotating shaft, and a rotating disc, and the propeller body is evenly arranged on the rotating shaft. A turntable is arranged around the connection body and behind the paddle body, the turntable is solidified with the shaft connection body, and the surface of the turntable is covered with through holes. Another example is the Chinese utility model patent "T...

AI Technical Summary

Problems solved by technology

[0003] However, the rotation of the propellers in the above two patents is transmitted by the rotating shaft and the propeller hub. When this propeller is in operation, its rotating bearing is subjected to the torsional stress generated by the rotation and the pushing and suction pressure generated by the action of the propeller. Stress, and the rotating shaft is easily entangled by aquatic plants and other sundries during the rotation process in the water, causing the propeller to fail to work normally

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