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A sound insulation device suitable for impact echo acoustic frequency detection

A technology of sound insulation device and shock echo, which is applied in the direction of measuring device, using sound wave/ultrasonic wave/infrasonic wave to analyze solids, and using sound wave/ultrasonic wave/infrasonic wave to analyze materials, etc. It can solve the problems of difficult quantitative accuracy, large excitation energy, and difficult detection Deep void and other problems, to improve the test accuracy, avoid reflection, reduce the effect of the impact

Active Publication Date: 2021-12-21
四川升拓检测技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method has a long history, it has the following disadvantages: it requires a large excitation energy and hammer body, it is difficult to quantify and has poor accuracy, and it is difficult to detect deep voids and defects

Method used

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  • A sound insulation device suitable for impact echo acoustic frequency detection
  • A sound insulation device suitable for impact echo acoustic frequency detection
  • A sound insulation device suitable for impact echo acoustic frequency detection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as figure 1 A sound insulation device suitable for shock echo audio detection is shown, including a conical sound insulation tube 3, a cover 1 respectively arranged in both ends of the sound insulation tube 3 and a bracket 7 for fixing the pickup, connected between the cover 1 and the bracket The connection cable 2 between 7, the cover 1 and the bracket 7 are all in the shape of a circular cone and the cover 1 is located at the larger diameter end of the sound insulation tube 3; the sound insulation material 4 is filled in the circular cone-shaped sound insulation tube 3.

[0038] Sound insulation materials can also be made of a variety of materials, such as more sound insulation cotton used in the market.

Embodiment 2

[0040] Based on the principles of the foregoing embodiments, this embodiment discloses an optimized implementation manner.

[0041] The above-mentioned structure is also adopted, and the sound-insulating material 4 is arranged on the outer wall of the sound-insulating cylinder 3 , and the bracket 7 is fixed on the sound-insulating cylinder 3 through the support member 6 . The supporting member is in the shape of a sheet.

[0042] When in use, connect the pickup to the connecting cable and fix it on the bracket through the sound insulation pad. The upper edge of the pickup is flat with the top edge of the bracket. Concentric and parallel, the interior of the sound insulation tube is filled with sound insulation cotton, and the exterior is wrapped with sound insulation cotton; after the cables and the cover are welded together, the cover and the sound insulation tube are fixed together with bolts. Connect the corresponding test equipment and cables, press the device on the surf...

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Abstract

The invention discloses a sound insulation device suitable for shock echo audio frequency detection, which comprises a circular frustum-shaped sound insulation cylinder, covers and brackets respectively arranged in both ends of the sound insulation cylinder, and connecting cables connected between the cover and the bracket. Both the cover and the bracket are in the shape of a truncated cone, and the cover is located at the larger diameter end of the sound-insulating tube; the truncated-shaped sound-insulating tube is filled with sound-insulating materials. Its pickup accuracy is high.

Description

technical field [0001] The invention relates to the technical field of quality and safety detection of civil engineering, construction, road and bridge, and water conservancy projects, in particular to a sound insulation device suitable for shock echo audio frequency detection. Background technique [0002] Non-destructive testing techniques for concrete structures can be divided into the following two categories according to their test media: [0003] 1) Detection methods based on shock elastic waves and ultrasonic waves [0004] Ultrasonic method and shock elastic wave are essentially the same (both belong to the category of elastic wave in a broad sense), and both propagate through the tiny motion of particles in the measured object, so they are related to the parameters such as the mechanical properties of the material. However, the two methods are quite different due to the difference in wavelength and test equipment. [0005] 2), detection method based on electromagn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N29/12G01N29/22
CPCG01N29/12G01N29/22
Inventor 吴佳晔张亮邓立许自明陈宇朋华容如
Owner 四川升拓检测技术股份有限公司