CN201903533U - Electronically controlled stress wave generator used for nondestructive detection of anchor rod - Google Patents
Electronically controlled stress wave generator used for nondestructive detection of anchor rod Download PDFInfo
- Publication number
- CN201903533U CN201903533U CN2010206314207U CN201020631420U CN201903533U CN 201903533 U CN201903533 U CN 201903533U CN 2010206314207 U CN2010206314207 U CN 2010206314207U CN 201020631420 U CN201020631420 U CN 201020631420U CN 201903533 U CN201903533 U CN 201903533U
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- stress wave
- electromagnet
- wave generator
- anchor rod
- firing pin
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Abstract
An electronically controlled stress wave generator used for nondestructive detection of an anchor rod relates to the stress detection technique field of excitation devices used for exciting stress wave when the stress wave is used for detecting anchoring quality of the anchor rod. The stress wave generator comprises a cylindrical casing, an electromagnet installed in the cylindrical casing, a guide cylinder arranged in the electromagnet, a metal firing pin arranged in the guide cylinder, a return spring positioned at the lower part of the metal firing pin, a dynamic spring positioned at the middle part of the metal firing pin, a metal head arranged in the cylindrical casing, positioned above the electromagnet and opposite to the metal firing pin, and radial locking screws arranged on a side wall at the lower part of the cylindrical casing. The stress wave generator has the advantages that the exciting force is easily controlled, the uniformity is good, the generated stress wave can be transmitted to the anchor rod integrally and reliably, the uniformity of the wave shape of the generated stress wave is good, and the correctness of the detection result can be greatly improved.
Description
Technical field
The utility model relates to a kind of when adopting stress wave to detect anchor rod anchored quality, is used for exciting the exciting device of stress wave.Belong to stress wave detection technique field.
Background technology
Along with the emerge in multitude of artificial tunnel and artificial high slope engineering, anchor rod anchored technology is used widely in all kinds of underground workss and side slope nursing construction.The Dynamic Non-Destruction Measurement of anchor rod anchored quality also arises at the historic moment.In the anchor rod anchored technology, length and the mortar saturation degree between anchor pole and rock that anchor pole embeds in the rock are to estimate the key technical indexes of anchor rod anchored quality.At present, be to adopt the method for theory of stress wave to detect anchor rod anchored quality mostly.Promptly excite stress wave on the termination exposing of anchor pole, stress wave signal is propagated along anchor pole, around the anchor pole or bottom medium when changing (the not full or empty slurry of mortar), will produce reflected signal.Obtain elasticity wave propagation and reflected signal by the sensor that is attached to the anchor pole end, carry out the analysis of waveform time-frequency domain, can judge in the length of anchor pole and the anchor pole to have or not the leakiness situation, thereby estimate the slip casting saturation degree of anchor pole.The quality that excites of stress wave is that stress wave detects key of success.Roughly have two kinds about exciting of stress wave, a kind of is to adopt hand hammer to knock, and the shortcoming of this mode is to hit the bad control of the power of shaking, and the homogeneity of waveform is bad, and is very unfavorable to the analysis correctness of data; Another kind is to adopt super magnetic probe to excite stress wave, by manually surpassing magnetic probe by transmitting stress wave in the anchor pole end with hand, the stress wave that this mode provides is relatively stable, but because the tightness that hand is pressed is different, the stress wave energy that anchor pole receives is just not necessarily in full accord, equally also influences the correctness of testing result.
The utility model content
The purpose of this utility model is the above-mentioned shortcoming that overcomes prior art, provides a kind of and can inspire the electric-controlled type stress wave generator that is used for the anchor pole Non-Destructive Testing that stable stress wave can completely be delivered to anchor pole again reliably.
The electric-controlled type stress wave generator of realizing the utility model purpose by a tubular shell, be installed in electromagnet in the tubular shell, be arranged on guide in the electromagnet, be arranged on metal striker in the guide, spacing retracing spring in metal striker bottom and spacing power spring at metal striker middle part, be arranged in the tubular shell be positioned at the ferrule relative above the electromagnet with the metal striker and the radially lock-screw that is arranged on the tubular shell lower sides is constituted.During work tubular shell is enclosed within the exposing on the termination of anchor pole to be measured, the bottom that makes the guide in the housing is near in the termination of exposing of anchor pole, then precession radially lock-screw until pushing against anchor pole, thereby tubular shell is fixed on exposing on the termination of anchor pole.Connect the power supply of electromagnet then, make the striker in the guide produce magnetic force, striker the tension force that overcomes power spring under the effect of magnetic force move upward with magnet above ferrule inhale together.This moment, this device was in stress wave state to be excited.When exposing of anchor pole needs to excite stress wave behind the good and sound shockwave sensor on the termination, disconnect electromagnet power supply, magnetic force disappears, and striker moves downward under the effect of power spring and the resistance that overcomes the retracing spring of bottom impinges upon on the anchor pole, excites thereby finish the automatically controlled of stress wave.Finish and excite the back striker under the effect of retracing spring, to get back in the guide.Retracing spring and power spring are all in the raw at this moment.
Compared with prior art, the advantage of this electric-controlled type stress wave generator is that exciting force is easy to control, high conformity, and the complete anchor pole that is delivered to reliably of the stress wave energy of formation, the good uniformity of the stress wave waveform of formation can improve the correctness of testing result greatly.
Below in conjunction with drawings and Examples the utility model is described in further details.But content of the present utility model is not limited in this embodiment.
Description of drawings
Fig. 1 is a structural representation of the present utility model
Fig. 2 is the station figure to be excited of striker
Fig. 3 be striker excite station figure
Embodiment
Referring to Fig. 1～3, this electric-controlled type stress wave generator by a tubular shell 1, be installed in electromagnet 2 in the tubular shell 1, be arranged on guide 3 in the electromagnet 2, be arranged on metal striker 4 in the guide 3, spacing retracing spring 5 in metal striker 4 bottoms and spacing power spring 6 at metal striker middle part, be arranged in the tubular shell be positioned at the ferrule 7 relative above the electromagnet with metal striker 4 and the radially lock-screw 8 that is arranged on the tubular shell lower sides is constituted.9 the terminations of exposing among the figure for anchor pole, 10 is shockwave sensor, 12,13 is the guide erecting frame, the 14th, be fixed in the spacing ring of the power spring 6 of guide inwall, 15 are arranged on the spring base on the striker 4, and the 17th, the screw of installation electromagnet, the 18th, the power switch of electromagnet.Ferrule 7 can be installed with an installing plate that can move up and down 19, and the benefit of doing like this is the distance that can regulate between ferrule 7 and the striker, plays the effect of the tension force of regulating power spring 6.20 is the trip bolts that are threaded with installing plate 19 among the figure, the 21st, open the through hole on housing 1 sidewall.But this class nonmagnetic material of bump head aluminium matter of striker 4 lower ends is made, and moves to ferrule 7 under the effect of magnetic force to guarantee striker.
Claims (1)
1. electric-controlled type stress wave generator that is used for the anchor pole Non-Destructive Testing, it is characterized in that described electric-controlled type stress wave generator by a tubular shell, be installed in electromagnet in the tubular shell, be arranged on guide in the electromagnet, be arranged on metal striker in the guide, spacing retracing spring in metal striker bottom and spacing power spring at metal striker middle part, be arranged in the tubular shell be positioned at the ferrule relative above the electromagnet with the metal striker and the radially lock-screw that is arranged on the tubular shell lower sides is constituted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206314207U CN201903533U (en) | 2010-11-29 | 2010-11-29 | Electronically controlled stress wave generator used for nondestructive detection of anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206314207U CN201903533U (en) | 2010-11-29 | 2010-11-29 | Electronically controlled stress wave generator used for nondestructive detection of anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201903533U true CN201903533U (en) | 2011-07-20 |
Family
ID=44274127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206314207U Expired - Fee Related CN201903533U (en) | 2010-11-29 | 2010-11-29 | Electronically controlled stress wave generator used for nondestructive detection of anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201903533U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266918A (en) * | 2014-06-23 | 2015-01-07 | 安徽省城建设计研究院 | Adjustable monopulse stress wave quantitative generation device and method |
| CN104677996A (en) * | 2015-03-24 | 2015-06-03 | 南京工业大学 | Impact echo firing and collecting device |
| CN108982044A (en) * | 2018-06-12 | 2018-12-11 | 西安工程大学 | A kind of exciting bank for electric power pylon modal idenlification |
| CN109708798A (en) * | 2019-02-27 | 2019-05-03 | 沙洲职业工学院 | A kind of stress wave excitation device for side slope anchor pole loading test |
| CN111765856A (en) * | 2020-06-18 | 2020-10-13 | 浙江化工工程地质勘察院有限公司 | Nondestructive detection device and method for effective anchoring depth of anchor rod |
| CN112213391A (en) * | 2020-10-15 | 2021-01-12 | 山东省交通科学研究院 | Nondestructive excitation inspection device for anchor rod |
-
2010
- 2010-11-29 CN CN2010206314207U patent/CN201903533U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104266918A (en) * | 2014-06-23 | 2015-01-07 | 安徽省城建设计研究院 | Adjustable monopulse stress wave quantitative generation device and method |
| CN104677996A (en) * | 2015-03-24 | 2015-06-03 | 南京工业大学 | Impact echo firing and collecting device |
| CN108982044A (en) * | 2018-06-12 | 2018-12-11 | 西安工程大学 | A kind of exciting bank for electric power pylon modal idenlification |
| CN109708798A (en) * | 2019-02-27 | 2019-05-03 | 沙洲职业工学院 | A kind of stress wave excitation device for side slope anchor pole loading test |
| CN111765856A (en) * | 2020-06-18 | 2020-10-13 | 浙江化工工程地质勘察院有限公司 | Nondestructive detection device and method for effective anchoring depth of anchor rod |
| CN112213391A (en) * | 2020-10-15 | 2021-01-12 | 山东省交通科学研究院 | Nondestructive excitation inspection device for anchor rod |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110720 Termination date: 20131129 |