Two-joint bionic fishtail device capable of swinging at high speed

A driving device and joint technology, applied in the field of two-joint bionic fishtail devices, can solve the problems of failing to meet the frequency and amplitude requirements of efficient propulsion

Active Publication Date: 2021-03-16
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the limitation of the structure, the existing design of the flapping mechanism is far from meeting the frequency and amplitude requirements of efficient propulsion under the drive of the motor

Method used

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  • Two-joint bionic fishtail device capable of swinging at high speed
  • Two-joint bionic fishtail device capable of swinging at high speed
  • Two-joint bionic fishtail device capable of swinging at high speed

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Embodiment Construction

[0015] The present invention will be further described below in conjunction with the accompanying drawings.

[0016] The present invention designs a high-speed swinging two-joint bionic fishtail device. When the device is in operation, the driving shaft rotates under the drive of the motor to drive the two crankshafts to rotate through gears, and the crankshafts are respectively driven by belts sleeved on the journals of the connecting rods. The two driven shafts rotate to realize the fishtail swing. The invention controls the motion of the double-joint bionic fishtail through only one motor, and can realize the high-frequency swing of the bionic fishtail under the condition that the rotational speed of the motor is not limited.

[0017] A high-speed swinging two-joint bionic fishtail device, including the front part of the fishtail, the middle part of the fishtail and the caudal fin of the fishtail;

[0018] The front part of the fishtail includes a fishtail front shell 1, a...

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Abstract

The invention belongs to the technical field of bionic underwater propellers, and particularly relates to a two-joint bionic fishtail device capable of swinging at a high speed. The fishtail comprisesa fishtail front part, a fishtail middle part and a fishtail tail fin, a driving device mounting frame, a driving shaft, a first crankshaft and a second crankshaft are arranged in the fishtail frontpart; a first joint driven shaft is arranged at the front end of the fishtail middle part; and a second joint driven shaft is arranged at the front end of the fishtail tail fin. During operation, thedriving shaft is driven by a motor to rotate so as to drive the first crankshaft and the second crankshaft to rotate through gears, the first crankshaft and the second crankshaft drive the first jointdriven shaft and the second joint driven shaft to rotate through the belts arranged on connecting rod journals in a sleeving mode correspondingly, and the bionic fishtail swinging is achieved. The high-speed swinging of the double-joint bionic fishtail can be achieved only through the single motor, and the rapid maneuvering of the robotic fish is achieved.

Description

technical field [0001] The invention belongs to the technical field of bionic underwater propellers, in particular to a high-speed swinging two-joint bionic fishtail device. Background technique [0002] Underwater propulsion is an important tool for exploring and returning to the ocean. Bionic fish, as a combination of fish propulsion mechanism and robotic technology, provides a new idea for the development of underwater propulsion. Compared with traditional underwater propulsion It has important research value and application prospect. Once applied, bionic fish will play an important role in complex and dangerous underwater environment operations, military reconnaissance, underwater salvage, marine life observation, archaeology and other aspects. [0003] The swimming speed and efficiency of the existing bionic robot fish are obviously lower than the fast fish in the water. It has been observed that the flapping frequency of fast fish is extremely fast, for example, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H1/36
CPCB63H1/36
Inventor 单磊许国冬段文洋雷洁
Owner HARBIN ENG UNIV
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