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Single-impact type vibration excitation device applicable to nondestructive tests of long anchor rods/long anchor cables

A technology of non-destructive testing and excitation devices, which is applied in the direction of ultrasonic/sonic/infrasonic generation, etc., to avoid secondary excitation, improve accuracy, and facilitate operation

Inactive Publication Date: 2015-04-29
NINGBO SHENGTUO DETECTION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in actual testing, due to the small cross-sectional area of ​​the anchor cable (generally only about 7mm), an excessively large vibrating hammer will cause a lot of inconvenience in the vibration

Method used

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  • Single-impact type vibration excitation device applicable to nondestructive tests of long anchor rods/long anchor cables
  • Single-impact type vibration excitation device applicable to nondestructive tests of long anchor rods/long anchor cables
  • Single-impact type vibration excitation device applicable to nondestructive tests of long anchor rods/long anchor cables

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Embodiment Construction

[0040] The present invention will be described in detail below in conjunction with accompanying drawing: Figure 10 , 11 As shown, the present invention is made up of excitation cone 1 and buffer device 2, and the structure of described excitation cone 1 is a two-stage mechanism, namely excitation cone 11 and excitation cone sharp end 12, and described buffer device 2. Composed of an elastic spring 21 and a rubber pad 22; a step 13 for placing the elastic spring 21 is arranged between the sharp end 12 of the excitation cone and the excitation cone 11, and one end of the elastic spring 21 is fixed on the step 13 , the other end is connected with the rubber pad 22; the excitation cone 1 is installed in series with the elastic spring 21 and the rubber pad 22 in sequence, and kept concentric and parallel; the wire diameter of the elastic spring 21 is recommended to be 1.6mm, and the diameter of the elastic spring 21 is 16mm.

[0041] The vibrating cone 1 is made of metal, wherei...

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Abstract

The invention relates to a single-impact type vibration excitation device applicable to nondestructive tests of long anchor rods / long anchor cables. The device consists of a vibration excitation cone and a buffer device, wherein the vibration excitation cone adopts the structure of a two-section mechanism which comprises a vibration excitation cone body and a vibration excitation cone sharp end; the buffer device consists of a spring and a rubber pad; a step for accommodating the spring is arranged between the vibration excitation cone sharp end and the vibration excitation cone body, one end of the spring is fixed on the step, and the other end of the spring is connected with the rubber pad; the vibration excitation cone, the spring and the rubber pad are connected in series, mounted sequentially and kept to be concentric and in parallel. The device has the benefits as follows: low-frequency high-energy elastic wave signals can be produced, the test range and the working efficiency during quality tests on the long anchor rods and the long anchor cables are improved to a great extent, secondary vibration excitation can be effectively avoided, and the test precision is greatly improved; the device is simpler in overall structure and convenient to operate.

Description

technical field [0001] The invention belongs to the technical field of quality and safety detection of civil engineering, construction, road and bridge, and water conservancy projects, and specifically refers to a single-shot vibration excitation device suitable for nondestructive detection of long anchor rods / long anchor cables. Background technique [0002] In tunnels, slopes, coal mines and other projects, in order to stabilize the surrounding rock and soil, anchor rods and anchor cables are widely used. However, due to the weathering of the rock mass on site and the influence of groundwater, various aging and deterioration phenomena will inevitably occur in the anchor cables and bolts, which will reduce the stability of the slope and cause damage and losses. Therefore, it is necessary and important to carry out quality inspection on anchor rods (cables). [0003] At present, in the quality inspection of bolts (cables), the common way is to make the vibration excitation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/34
Inventor 吴佳晔吴曾炜孔元张亮何伟
Owner NINGBO SHENGTUO DETECTION TECH CO LTD
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