Cycloid paddle boat propeller

Abstract

The cycloid propeller is mainly composed of a planet carrier, a sun gear shaft, a planet gear shaft, a flexible element, a sealed bearing and several blades. The two ends of the sun gear shaft are fixed on the corresponding parts of the boat. When the external torque drives the planetary carrier to rotate, the blades with the shaft ends of each planetary wheel located on the outer sides or one side of the planetary carrier will always move around the axis of the sun gear in a plane that is always perpendicular to the water surface, so that when each blade is working, from During the whole process from entering the water to exiting the water, the water stroke is perpendicular to the water surface, which greatly improves the propulsion efficiency of the propeller. The cycloidal paddle boat propeller can not only be configured on various monohull boats and catamaran boats, but also can be arranged in multiple boats like dragon boats to realize high-speed operation. Especially this thruster is not only suitable for working in various water areas of rivers, rivers, lakes and seas. It is especially used in swamps, wetlands, urban shallow rivers and lakes, reflecting its unique function of energy saving and environmental protection.

Description

technical field [0001] The invention relates to a boat propeller, in particular a cycloid paddle boat propeller composed of a flexible transmission mechanism and a planetary transmission mechanism. Background technique [0002] Since the invention of boats by humans, the pros and cons of propellers are directly related to the speed of the boat and the level of work efficiency. In recent years, the degree of impact on energy conservation, emission reduction and environmental protection has become an important technical index to test the quality of a boat propeller. At present, common boat propellers mainly include hand oars, hand sculls, hand poles, sails, paddle wheels and propellers. [0003] Among them, the most widely used is the propeller propeller. It is characterized by simple structure, small size and convenient use. But its disadvantage is that cavitation will occur during high-speed operation. Seriously hinder the development of boats to high speed, especially p...

AI Technical Summary

Problems solved by technology

[0005] In the traditional paddle wheel propeller, since its multiple blades are radially distributed around the transmission shaft, each blade has to go through water pressure, stroke and water lifting during the whole process from entering the water to exiting the water. Three stages, only when each blade rotates to the stage perpendicular to the water surface, the stroke efficiency generated by the working state of the blade is the highest, and when the drive shaft continues to rotate, the blade is no longer It is perpendicular to the horizontal plane, and part of the force is doing water lifting, which is not conducive to the normal navigation of the boat.

Similarly, when the next adjacent working blade enters the water, since the blade has not yet rotated to the stage perpendicular to the horizontal plane, it will have a part of the force in the water to press the water, which also hinders the normal work of the boat. unfavorable factors

Since each blade of the paddle wheel propeller cannot always maintain a working state perpendicular to the water surface during the entire process from entering the water to exiting the water, the propulsion efficiency of the paddle wheel propeller is not too high, so the current market application Ships using this device as a propeller are rare

[0006] In addition, water jet propelled boats have the advantage of shallow draft and can run at high speed in narrow spaces and shallow water areas. However, this propulsion method not only requires high power, but also consumes a lot of energy, especially when using this device to propel Sometimes it will disturb the river sediment, cause the sediment to flood and damage the water surface environment, and will destroy the normal growth of underwater plants and fish

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