Unlock instant, AI-driven research and patent intelligence for your innovation.

A sma wire axially driven underwater propulsion device

A technology of axial drive and propulsion device, applied in the field of robots, can solve problems such as poor underwater stealth performance and noise, and achieve the effect of improving concealment and survivability

Active Publication Date: 2021-05-04
HARBIN INST OF TECH
View PDF5 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A sma wire axially driven underwater propulsion device
  • A sma wire axially driven underwater propulsion device
  • A sma wire axially driven underwater propulsion device

Examples

Experimental program
Comparison scheme
Effect test

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 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The utility model relates to an underwater propulsion device driven axially by SMA wire, which belongs to the technical field of robots. The invention solves the problem that the existing propeller underwater propulsion system generates noise and causes poor underwater stealth performance. The cavity is made of elastic rubber material and has a single wave drum-shaped structure. Two end caps are respectively covered at both ends of the cavity. A through hole is opened in the center of each end cap. The outlet one-way valve and The inlet one-way valves are installed in the two through holes one by one, the SMA wire driving assembly is coaxially sleeved on the cavity and is in close contact with the cavity, and the two ends of the SMA wire driving assembly are connected to the two ends respectively. The cover is fixed, and the SMA wire drive assembly shrinks axially along the cavity when the power is turned on, and recovers when the power is turned off. By controlling the rapid power on and off of the SMA wire, the silent and continuous propulsion action of the entire propulsion device can be realized. On the one hand, the cavity guides the elongation of the SMA wire, on the other hand, a negative pressure is formed in the cavity, and the fluid in the cavity is replenished through the inlet check 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(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