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Underwater propulsion device axially driven by SMA wires

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

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 axially by SMA wire

Method used

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  • Underwater propulsion device axially driven by SMA wires
  • Underwater propulsion device axially driven by SMA wires
  • Underwater propulsion device axially driven by SMA wires

Examples

Experimental program
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specific Embodiment approach 1

[0025] Specific implementation mode one: combine Figure 1-8 Describe this embodiment, an underwater propulsion device driven axially by SMA wire, which includes a cavity 1, an outlet check valve 2, an inlet check valve 3, an SMA wire drive assembly 4 and two end covers 5,

[0026] The cavity 1 is made of elastic rubber material and has a single wave drum-shaped structure. Two end caps 5 are respectively covered on both ends of the cavity 1. A through hole is opened in the center of each end cap 5. The outlet The one-way valve 2 and the inlet one-way valve 3 are installed in two through holes in one-to-one correspondence, and the SMA wire drive assembly 4 is coaxially sleeved on the cavity 1 and is in close contact with the two end caps 5 respectively, and The two ends of the SMA wire driving assembly 4 are fixedly connected to the two end caps 5 respectively, and the SMA wire driving assembly 4 shrinks axially along the cavity 1 when the power is turned on, and recovers when ...

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Abstract

The invention discloses an underwater propulsion device axially driven by SMA wires, and belongs to the technical field of robots. The problem that the underwater stealth performance is poor 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 single-waveform waist-drum-shaped structure; thetwo end covers are arranged at the two ends of the cavity in a covering mode respectively. A through hole is formed in the center of each end cover; the outlet one-way valve and the inlet one-way valve are installed in the two through holes in a one-to-one correspondence and penetrating mode, the SMA wire driving assembly is coaxially arranged on the cavity in a sleeving mode and makes close contact with the cavity, the two ends of the SMA wire driving assembly are fixedly connected with the two end covers respectively, and the SMA wire driving assembly shrinks in the axial 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. On one hand, the cavity plays a role in guiding extension of the SMA wire, on the other hand, negative pressure is formed in the cavity, and fluid in the cavity is supplemented through the inlet one-way valve.

Description

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

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