Propelling device imitating front fins of sea lion

A propulsion device and sea lion technology, applied in the field of high-efficiency bionic propulsion devices, can solve problems such as difficulty in meeting diverse ocean exploration tasks, large gaps, unsatisfactory propulsion efficiency, noise and wake control, and achieve efficient propulsion performance and improvement. Flexibility and the effect of improving propulsion efficiency

Active Publication Date: 2020-11-24
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The locomotive capabilities of existing underwater vehicles still lag far behind those of natural aquatic animals, and these gaps are partly due to the limitations of underwater vehicle propulsion technology
The current mainstream propulsion technology st

Method used

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  • Propelling device imitating front fins of sea lion
  • Propelling device imitating front fins of sea lion
  • Propelling device imitating front fins of sea lion

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Embodiment Construction

[0032] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0033] Such as Figure 1 to Figure 3b As shown, a sea lion-like front fin propulsion device includes a base unit, a drive unit, a swing plate mechanism, a space crank rocker mechanism and a bionic sea lion flexible front fin unit. The base unit is made up of 2 motor bases 101, 1 speed reducer base 102, 2 steering slots 103, 1 adjustable angle mechanism 104, 2 hinges 105, and 1 horizontal plate 106. The driving unit is composed of 2 waterproof stepper motors 201, 2 shaft couplings 202, and 2 right-angle reducers 203. There are two sets of swing plate mechanism 300, space crank rocker mechanism 400, and imitation sea lion flexible front fin unit 500, which are symmetrically arranged o...

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PUM

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Abstract

The invention discloses a propelling device imitating front fins of a sea lion. The propelling device comprises a base unit, a driving unit, wobble plate mechanisms, space crank rocker mechanisms andflexible units imitating the front fins of the sea lion. The driving unit drives the wobble plate mechanisms and the space crank rocker mechanisms which are connected in series so that the flexible units imitating the front fins of the sea lion can imitate the movement characteristics of the front fins of the sea lion and the propelling principle based on both lift force and resistance. And meanwhile, the device has an oval movement trail similar to that of the front fins of the sea lion and periodic change of the front fin attack angles, and has high propelling efficiency and maneuverability.The flexible units imitating the front fins of the sea lion have the bone density, appearance and flexibility characteristics similar to those of the front fins of the sea lion, have the good hydrodynamic characteristic and improve the propelling efficiency. According to the propelling device, the movement track, the turning direction, the power characteristics and the thrust of the mechanism canbe adjusted in multiple aspects so that the device can adapt to different underwater movement conditions. In addition, through adjustment, the device can generate a movement trail similar to an 8 shape of the forelimbs of a sea turtle.

Description

technical field [0001] The invention relates to the technical field of bionic underwater vehicle propulsion, more specifically, the invention relates to a high-efficiency bionic propulsion device with motion characteristics of imitating sea lion front fins. Background technique [0002] With the expansion of the application field of underwater vehicles, underwater vehicles are required to have better motion performance, so new challenges are also posed to their propulsion technology. Flexible bionic propulsion technology has become a current research hotspot and frontier. The locomotive ability of existing underwater vehicles is still far behind that of natural aquatic animals, and part of the reason for these gaps is due to the limitations of underwater vehicle propulsion technology. The current mainstream propulsion technology still uses the propeller as the propulsion device. Although propeller propulsion can generate reliable and stable thrust, it is not ideal in terms o...

Claims

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Application Information

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IPC IPC(8): B63H1/36B63C11/52
CPCB63H1/36B63C11/52
Inventor 王树新邓仕晗刘玉红刘书赫张宏伟王延辉杨亚楠
Owner TIANJIN UNIV
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