A bionic undulating long-fin underwater propeller

Abstract

The invention relates to a bionic fluctuating long fin underwater propulsor which comprises an upper half drum, a lower half drum, a seal ring, a screw hole, an inflating valve core, a waterproof plug, a first bevel gear, a plurality of fin strips, a long fin, a control circuit board, a first steering gear, a second steering gear, a pressing strip, a first bearing block, a balancing weight, a screw rod, a screw hole, a battery module and a multichannel first steering gear output structure, wherein the multichannel first steering gear output structure is composed of a long shaft, a fin strip base, a second bearing block, a shaft sleeve, a polytetrafluoroethylene ring, a Glyd ring, a ball bearing and a second bevel gear. The upper half drum, the lower half drum and the seal ring are connected and pressed to form a sealed cavity, the long fin is arranged on the lower portion of a cylindrical cavity, the long fin is provided with the fin strips, and the fin strips are equidistantly distributed on the surface of the long fin. Each fin strip is connected with the first steering gear through the first bevel gear and the second bevel gear to be independently driven, the surface of the long fin is made of a flexible film made of a latex material, and the long fin can be driven by the fin strips to achieve multiple waveforms of sine or other types and have the effect with water to generate stable propulsive force.

Description

technical field [0001] The invention belongs to the technical field of bionic robot fish, and relates to a bionic undulating long-fin underwater propeller, in particular to a bionic undulating long-fin underwater propeller imitating the swimming mode of a swordfish. Background technique [0002] In recent years, autonomous underwater vehicles (AUVs) have been widely used in ocean development, marine research, underwater environmental protection and other fields. Traditional underwater propellers such as propellers will generate a large amount of noise with large bandwidth in the wake, causing serious damage to some underwater ecosystems, and also have disadvantages such as low efficiency and poor maneuverability. After a long period of evolution, fish have evolved various efficient and highly maneuverable propulsion methods. Simulating the propulsion mode of fish, and developing intelligent bionic underwater robots with high performance, high mobility, and little disturbanc...

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned long fin propulsion device can realize forward and backward motion, but the swimming speed is relatively slow. Due to structural limitations, it is difficult to realize fast three-dimensional underwater motion, and the scalability is not strong, so it has limited guidance for the development of new underwater propellers

The Institute of Automation of the Chinese Academy of Sciences has imitated rays to develop a bionic robot fish propelled by pectoral fin fluctuations, which can realize multi-modal movements such as forward, backward, rising, and diving. less, the fin surface can only achieve a sine wave fluctuation at most, and the types of motion that the robot fish can perform are limited

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