A reciprocating underwater very low frequency sound source

A very low-frequency, reciprocating technology, applied in the field of underwater very low-frequency sound sources, can solve the problems of heavy electric rammer, unusable electric rammer, broken spring, etc.

Active Publication Date: 2021-07-06
HARBIN ENG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The weight of the electric rammer itself is relatively large, and the oil leakage of the crankshaft or the spring breakage often occur. Therefore, the electric rammer cannot be used on hard ground, but can only be used for the compaction of compound soil, clay, sand and barren concrete. middle

Method used

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  • A reciprocating underwater very low frequency sound source
  • A reciprocating underwater very low frequency sound source
  • A reciprocating underwater very low frequency sound source

Examples

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Embodiment Construction

[0026] The following examples describe the present invention in more detail.

[0027] The underwater very low frequency sound source designed with a reciprocating mechanism of the present invention includes an electric rammer 1, an exciting rod 2, a piston 3, a clamp 4, a balance bar 5, a balance block 6, a support frame 7, a sound insulation cover 8, an inflatable Air bag 9, frequency converter. The electric rammer 1 removes the handrail and ramming plate, the bottom of the electric rammer 1 is connected to the excitation rod installation flange 21 of the excitation rod 2, the other end of the excitation rod 2 is connected to the piston 3, and the clamp 4 runs through the electric rammer 1 One end of the balance bar 5 is fixed on the fixture 4, and the other end is installed with a balance block 6. One end of the support frame 7 is fixed on the shock absorber 11 of the electric rammer 1, and the other end is fixed on the sound insulation cover 8. The sound cover 8 wraps the ...

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PUM

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Abstract

The invention provides a reciprocating underwater very low frequency sound source. Including the electric rammer, frequency converter and sound insulation cover with the handrail and rammer removed, the exciter rod is installed at the bottom of the electric rammer, the piston is installed at the end of the exciter rod, the fixture is installed on the upper part of the electric rammer, and one end of the balance bar Fixed on the fixture, the other end of the balance bar is installed with a balance block, the support frame is installed in the sound insulation cover, the electric rammer is installed on the support frame, the sound insulation cover wraps the entire electric impact rammer, and the bottom of the sound insulation cover is equipped with an inflatable air bag. The device is connected to the power input mechanism of the electric rammer. The working frequency of the sound source is 7‑10Hz, and the reciprocating mechanism is used to push the piston to move periodically to generate very low frequency sound waves. The equipment is simple in composition, high in power conversion efficiency, and highly practical in engineering. It is suitable for underwater sound detection or long-distance sound transmission. very low frequency sound source.

Description

technical field [0001] The invention relates to an underwater very low frequency sound source. Background technique [0002] At present, the commonly used underwater sound sources are: explosive explosion sound source, electroacoustic transducer sound source, parametric array sound source, fluid dynamic sound source, electromagnetic sound source, laser sound source and plasma sound source, etc. Among these sound sources, only explosive explosion sound sources and fluid dynamic sound sources can produce low-frequency sound waves of 20 Hz and below, and also have a relatively high sound source level. The hydrodynamic sound source uses the instantaneous release of airflow to generate sound waves, and its working method is also similar to that of an explosive explosion sound source. Because the explosion of explosives and the instantaneous release of airflow are affected by pressure, water temperature, and the amount of charge and gas, the repeatability of the acoustic signals ...

Claims

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Application Information

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IPC IPC(8): G10K15/06G10K15/04
CPCG10K15/043G10K15/06
Inventor 刘永伟李亚林商德江
Owner HARBIN ENG UNIV
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