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Underwater propulsion device driven by SMA wires in radial direction

A propulsion device and drive component technology, applied in the field of robotics, can solve problems such as poor underwater stealth performance and noise

Active Publication Date: 2020-04-03
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the problem that the existing propeller underwater propulsion system generates noise and causes poor underwater stealth performance, and further provides an underwater propulsion device driven radially by SMA wire

Method used

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  • Underwater propulsion device driven by SMA wires in radial direction
  • Underwater propulsion device driven by SMA wires in radial direction
  • Underwater propulsion device driven by SMA wires in radial direction

Examples

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specific Embodiment approach 1

[0028] Specific implementation mode 1: Combination Figure 1-9 In this embodiment, an underwater propulsion device driven by SMA wire radially includes a cavity 1, an outlet one-way valve 2, an inlet one-way valve 3, an SMA wire drive assembly 4, and a plurality of radial pressure bars 5.

[0029] The cavity 1 is made of elastic rubber material and has a cylindrical structure. Both ends of the cavity 1 are integrally fixed with baffles 6, and the two baffles 6 are coaxially provided with through holes. The outlet check valve 2 and the The inlet check valve 3 is installed in the two through holes one by one. A number of radial beads 5 are uniformly fixed on the surface of the cavity 1 in the circumferential direction and are all arranged parallel to the central axis of the cavity 1. The SMA wire drive assembly 4 The coaxial sleeve is sleeved on the cavity 1 and is in close contact with the cavity 1. The radial bead 5 is located between the SMA wire drive assembly 4 and the cavity ...

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Abstract

The invention discloses an underwater propulsion device driven by SMA wires in a radial direction, and belongs to the technical field of robots. The problem that the underwater stealth performance ispoor due to the fact that an existing propeller underwater propulsion system generates noise is solved. The cavity is made of an elastic rubber material and is of a cylindrical structure; baffles areintegrally and fixedly connected to the two ends oof the cavity. Through holes are coaxially formed in the two baffle plates; the outlet one-way valves and the inlet one-way valves are arranged in thetwo through holes in a one-to-one correspondence and penetrating manner; the plurality of radial pressing strips are uniformly and fixedly arranged on the surface of the cavity in the circumferentialdirection and are parallel to the central axis of the cavity; the SMA wire driving assembly is coaxially arranged on the cavity in a sleeving mode and makes close contact with the cavity, the radialpressing strip is located between the SMA wire driving assembly and the cavity, and the SMA wire driving assembly shrinks in the radial direction of the cavity when powered on and recovers when powered off. The silent continuous propelling action of the whole propelling device can be realized by controlling the rapid power-on and power-off of the SMA wire.

Description

Technical field [0001] The invention relates to an underwater propulsion device, in particular to an underwater propulsion device driven by an SMA wire radially, and belongs to the technical field of robots. Background technique [0002] Traditional underwater propulsion devices generally use propellers, which will produce a certain amount of noise during travel. For military-purpose underwater detectors and other devices, this shortcoming has an important impact on acoustic stealth, underwater acoustic communication and navigation, resulting in poor underwater concealment performance, which is not conducive to the concealment and survival of underwater detection devices. Summary of the invention [0003] The invention aims to solve the problem of poor underwater stealth performance caused by noise generated by the existing propeller underwater propulsion system, and further provides an underwater propulsion device driven by an SMA wire radially. [0004] The technical solutions ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H11/02B63H23/32
CPCB63H11/02B63H23/32
Inventor 杨飞岳洪浩阮琪邓宗全陆一凡
Owner HARBIN INST OF TECH