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Granite damage sound wave detection and intelligent analysis device

A technology of intelligent analysis and sound wave detection, applied in the direction of measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve problems such as sound wave damage and damage crack changes, and achieve reliable support , high degree of automation, and high accuracy of experimental data

Inactive Publication Date: 2020-07-03
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Since the rock mass is sampled by a professional rock mass sampling device, the obtained rock mass sample is basically a column structure, and the internal damage of weathered granite can be roughly divided into horizontal and vertical damage cracks. Therefore, It is necessary to carry out horizontal and vertical acoustic wave detection on the interior of the granite to determine the depth and extension direction of the damage cracks. At the same time, when the rock mass is subjected to different loads along the axial and radial directions, the internal damage cracks will change, which is urgent. The problem to be solved is that the stress safety level of granite can be evaluated through damage detection research. In the prior art, there is no horizontal or vertical acoustic wave experiment for granite samples, and there is no analysis of the internal acoustic wave of the rock mass when it is loaded in different directions. Damage intelligent analysis device

Method used

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  • Granite damage sound wave detection and intelligent analysis device
  • Granite damage sound wave detection and intelligent analysis device
  • Granite damage sound wave detection and intelligent analysis device

Examples

Experimental program
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Effect test

Embodiment 1

[0041] Embodiment one, combined with the attached Figure 1-18 , the granite damage sound wave detection and intelligent analysis device, including a bracket 1, the bracket 1 is connected to an ultrasonic detector 2, the ultrasonic detector 2 uses a probe to emit ultrasonic waves, and detects the gaps inside the granite body through the return effect of the ultrasonic waves, The ultrasonic detector 2 is connected to the computer, and the ultrasonic detector 2 sends the detected data back to the computer for analysis and storage, thereby intelligently analyzing the internal damage of the granite. It is characterized in that the support 1 The rear end is equipped with a self-locking motor 3, the output shaft of the self-locking motor 3 is connected to a conversion plate 4, the rotation of the self-locking motor 3 drives the front conversion plate 4 to convert, and self-locking is performed after the indexing , the self-locking motor 3 is electrically connected with the controlle...

Embodiment 2

[0044] Embodiment two, on the basis of embodiment one, in conjunction with the attached Figure 1-18 , the clamping device includes two sets of T-shaped slots 24 on the upper end of the conversion plate 4 at intervals in the transverse direction, and a T-shaped slider 25 is slidably fitted in the T-shaped slot 24, and the T-shaped slot 24 rotates Connect a lead screw 26, the lead screw 26 is screwed with the T-shaped slide block 25 and is connected at one end with the output shaft of the first motor 27 installed on the conversion plate 4, the rotation of the first motor 27 drives Lead screw 26 rotates, because the rotation of T-shaped slider 25 is limited, T-shaped slider 25 can only move along the transverse direction of T-shaped groove 24, thereby adaptability to granite samples 8 under different lengths Adjustment, the upper end of the T-shaped slider 25 is connected with a translation plate 28, wherein one translation plate 28 is connected with a bottom clamping device, an...

Embodiment 3

[0048] Embodiment three, on the basis of embodiment one, in conjunction with the attached Figure 1-18, the lateral pressurizing device includes a third hydraulic cylinder 48 connected in the housing cylinder 7, the lower end of the third hydraulic cylinder 48 is connected to a third hydraulic rod 49, and the lower end of the third hydraulic rod 49 passes through The first spring 50 is slidably connected to a vertical bar 51, and the lower end of the vertical bar 51 is connected to a rubber belt 52. The rubber belt 52 can adopt a commonly used rubber triangle belt, and the lower end of the vertical bar 51 is vertically slid to fit a movable pin 53. A second spring 54 is connected between the movable pin 53 and the vertical bar 51, the first piezoelectric sensor 55 is installed in the vertical bar 51, and the vertical movement of the movable pin 53 triggers the first piezoelectric sensor 55 to perform Work, during the downward movement of the third hydraulic rod 49, the movable...

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Abstract

The invention relates to a granite damage sound wave detection and intelligent analysis device. In allusion to the problem that an intelligent analysis device for sound wave damage inside rock mass when load is applied in different directions is unavailable when a sound wave experiment is conducted on a granite sample in the prior art, the device adopts a transposition mechanism to realize load pressure on the granite sample along the axial direction and the radial direction, and a first motor in a clamping device is used for driving a lead screw to be matched with a T-shaped sliding block torealize the change of a load applying position, so that more accurate experimental data is obtained. Meanwhile, a first hydraulic cylinder is communicated and matched with a second hydraulic cylinder,the abdicating effect is achieved in the transposition process, the initial pressurization states of different granite samples are kept consistent while the vertical samples are supported, the influence of human factors on the experimental result is avoided, the structure is exquisite, the automation degree is high, the experimental data precision is high, manpower is saved, and mechanical transposition is achieved, the safety performance is higher, the practicability is high, and the device is suitable for application and popularization.

Description

technical field [0001] The invention belongs to the technical field of detection equipment, in particular to an acoustic wave detection and intelligent analysis device for granite flaw detection. Background technique [0002] Ultrasonic flaw detection is a method to detect the defects of the research object by using the ultrasonic energy to penetrate deep into the material and pass from one section to another section, and reflect at the edge of the interface to detect the defects of the research object. To the inside of the researched object, once a defect and the bottom surface of the researched object are encountered, reflected waves will be generated respectively, and then the measurement data of each measurement point will be processed informationally, and a pulse waveform will be formed on the fluorescent screen, and the defect will be judged according to these second pulse waveforms Position and size, there are many wave modes when ultrasonic waves propagate in the med...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N29/04G01N29/27G01N29/22
CPCG01N29/04G01N29/225G01N29/27G01N2291/0232G01N2291/0289
Inventor 黄志全张兴胜付宇董金玉于怀昌袁广祥陈上元王安明王洪建
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER