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Ship side sonar array mounting platform with shock-proof and moise reducing function

A technology for installing platforms and noise reduction, which is applied to ships, navigation aids, and measuring devices. It can solve problems such as unsatisfactory effects and inability to suppress vibrations, and achieve the effect of increasing the vibration isolation frequency range and improving the detection distance.

Inactive Publication Date: 2005-03-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is suitable for isolating medium and high frequency vibration signals. It is not ideal for isolating lower frequency vibrations. Otherwise, a very large vibration isolation foundation will be used to reduce the first-order natural frequency. The frequency vibration signal has attenuation effect, but sometimes it can amplify the vibration signal lower than the first-order natural frequency (in fact, when the ship is sailing, it can excite a vibration signal with a very rich frequency spectrum, and the lowest frequency is often several below Hz)
In addition, the passive vibration isolation foundation has the effect of isolating external vibration signals, but cannot suppress the vibration generated inside the platform itself

Method used

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  • Ship side sonar array mounting platform with shock-proof and moise reducing function
  • Ship side sonar array mounting platform with shock-proof and moise reducing function
  • Ship side sonar array mounting platform with shock-proof and moise reducing function

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Embodiment Construction

[0016] Such as figure 1 , figure 2 As shown, it includes installing more than 3 guide straight columns 11 equally on the same circumference of the base plate 12, and the small cylinder above each guide straight column 11 is sequentially equipped with rubber pads 10 from bottom to top, and is installed on the positioning sleeve 9 The linear bearing 8 inside, the spring 6 and the screw 5 installed in the stop ring 7, one end of the vibration isolation platform 4 is installed in the positioning sleeve 9, and the base of the giant magnetostrictive driver 1 is installed on the bottom plate 12 (guide straight column and super Magnetostrictive drivers are installed across each other), the output rod of the giant magnetostrictive driver 1 is fixed with the other end of the vibration isolation platform 4, and the vibration pickup sensor 3 is housed on the output rod.

[0017] Such as image 3 As shown, the described giant magnetostrictive driver 1 includes a giant magnetostrictive r...

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PUM

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Abstract

The ship side sonar array mounting platform includes three or more guide columns installed in the same circle on the pedestal and with rubber washer, linear bearing inside positioning sleeve, spring and screw successively mounted in the columella on the column; shock insulating platform with one end inside positioning sleeve, overexciting extension driver with output rod fixed to the other end of the shock insulating platform, and chock pick up sensor mounted on the output rod. The present invention combines the active and passive shock elimination method to increase the shock insulating frequency range and increase the detection range of sonar.

Description

technical field [0001] The invention relates to a magnetostrictive device, in particular to a ship side sonar array installation platform capable of effectively isolating vibration and having vibration isolation and noise reduction by combining active and passive vibration isolation technologies. Background technique [0002] Sonar equipment has the functions of detecting, locating, identifying and tracking / moving targets in water. It is an important means for modern ships to detect targets in water, and has a wide range of applications in many fields such as military and civilian use. With the development of science and technology and the confrontation between identification and anti-identification, the performance of sonar is continuously improved and perfected. For example, due to the emergence of stealthy (covered anechoic tile) submarines, the detection performance of the more mature medium and high frequency active sonars has declined, and low frequency active sonars (...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63B49/00G01S7/521G01S15/87
Inventor 魏燕定
Owner ZHEJIANG UNIV
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