CN202562889U - Fixing device for acoustic emission sensor on concrete surface - Google Patents
Fixing device for acoustic emission sensor on concrete surface Download PDFInfo
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- CN202562889U CN202562889U CN2012201909677U CN201220190967U CN202562889U CN 202562889 U CN202562889 U CN 202562889U CN 2012201909677 U CN2012201909677 U CN 2012201909677U CN 201220190967 U CN201220190967 U CN 201220190967U CN 202562889 U CN202562889 U CN 202562889U
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- acoustic emission
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Abstract
The utility model discloses a fixing device for an acoustic emission sensor on the concrete surface. The fixing device comprises a sensor fixing support, a spring, a sensor cover and a foot cover, wherein the foot cover is arranged at the lower end of the sensor fixing support, the foot cover comprises a base plate, a notch where the acoustic emission sensor is arranged is positioned on the base plate, the spring is fixed on the lower surface of the sensor fixing support above and corresponding to the notch, and the lower end of the spring is connected with the sensor cover. The fixing device solves the actual problems that an existing acoustic emission sensor fixed on the concrete surface is difficult to fix firmly, cannot guarantee the space position of the sensor accurately, is difficult to dismount and assemble, cannot guarantee fixing pressure stressed on the acoustic emission sensor, cannot be used repeatedly and efficiently and the like. The fixing device can be used in a lab to repeatedly monitor acoustic emission of quasi-brittle materials of concrete, rock and the like and can meet requirements for fixing the acoustic emission sensor in actual projects of concrete structures and the like.
Description
Technical field
The utility model relates to a kind of stationary installation of sensor; Relate in particular to a kind of stationary installation that is used in concrete surface fixed sound emission sensor; Be used in and carry out the accurate hard brittle material acoustic emission monitor(ing) of concrete and rock type in the laboratory repeatedly, and in actual engineerings such as xoncrete structure, carry out the fixing needs of calibrate AE sensor.
Background technology
In recent years, in the increasing Non-Destructive Testing that is applied to civil engineering structure of acoustic emission.Because concrete is a kind of artificial stone material of fragility; At its surface mount calibrate AE sensor is not a very easy thing; And the existing magnetic sensor bearing that is used for fields such as pressure vessel can not be applicable to the surface that is arranged at concrete and this type of rock material; Because concrete and steel need not, magnetic material can't adsorb on it.In addition; In testing laboratory, carry out in the acoustic emission monitor(ing) test of concrete material test specimen; Also there is the fixing problem of calibrate AE sensor; Because under such situation, need repeated multiple times that calibrate AE sensor is carried out dismounting, and require the locus of each fixed sound emission sensor and the value of fixation pressure to satisfy corresponding accuracy requirement.
Summary of the invention
The utility model technical matters to be solved is the deficiency to above-mentioned prior art, and a kind of fixedly time space position and more consistent calibrate AE sensor stationary installation that is used for concrete surface of pressure of repeatedly repeating is provided.
For solving the problems of the technologies described above; The technical scheme that the utility model adopts is: a kind of calibrate AE sensor stationary installation that is used for concrete surface; It is characterized in that, comprise sensor fixed support, spring, sensor cover and footmuff, described footmuff is arranged on the support bracket fastened lower end of sensor; Comprise a substrate at described footmuff; Described substrate is provided with the breach of a placement calibrate AE sensor, the fixing described spring of lower surface above the corresponding breach of sensor fixed support, and the lower end of spring connects described sensor cover.
Two ends at described substrate also are respectively arranged with a slot, and described breach is provided with two pins in described sensor fixed support lower end between two slots, and described pin inserts described slot.
Be respectively arranged with two at the two ends of the length direction of described footmuff and Width and be provided with the sensor telltale mark, the sensor telltale mark on the length direction is at the center of Width, and the telltale mark on the Width is at the center of length direction.
Described breach is circular, and the thickness of this circumferential notch is 1mm.
Described spring is the turriform spring.
The utility model adopt the main body stationary installation and with the method for designing that the bonder of concrete surface is separated, both can guarantee riding position accurately, the stable of sensor attachment pressure provide, and can guarantee the small and exquisite of hold-down support and the characteristics that can reuse again.In the laboratory of concrete sample, can alleviate the labour intensity of adjustment dismounting in a large amount of tests repeatedly, be convenient to dismounting, be convenient to recycling, time saving and energy saving, easy and simple to handle.Engineering site acoustic emission monitor(ing) for xoncrete structure has good practical significance and economic effect equally.The utility model is easy to use, and it is firm to stablize, and can guarantee that correct coupling is with fixing.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model sensor fixing rack structure synoptic diagram.
Fig. 3 is the utility model footmuff structural representation.
Fig. 4 is the vertical view of Fig. 3.
Wherein: 1, sensor fixed support, 11, upper plate, 12, riser, 13, pin, 2, footmuff, 21, substrate, 22, breach, 23, slot, 24, the sensor telltale mark, 3, spring, 4, sensor cover, 5, calibrate AE sensor.
Embodiment
Below in conjunction with accompanying drawing, the utility model is elaborated, like Fig. 1, shown in Figure 2; The calibrate AE sensor fixed support 1 of the utility model stationary installation is a steel plate bending member; Comprise top 11 plates, following two pins 13, also have in two connections and push up two risers 12 of 11 and two pins 13; At the lower surface welding spring 3 of upper plate 11, spring 3 can be selected the turriform spring for use.The lower end soldered sensor cover cap 4 of spring 3, when fixed sound emission sensor 5, sensor cover 4 is just in time covered in calibrate AE sensor 5 upper ends, and the turriform spring is delivered to the sensor wrap that is positioned at the calibrate AE sensor top with fixation pressure equably and covers.The counter-force of fixation of sensor then earlier is delivered to plastic foot by the upper plate of steel plate bending part and puts, and is delivered to concrete surface by the cohesive action of plastics footmuff through 502 quick setting cements again, and whole Path of Force Transfer is clear and definite and be convenient to control.
Footmuff can adopt plastic material to make; With low cost; Mainly be convenient to installation and removal calibrate AE sensor in enormous quantities and design, in use belong to the detection easily-consumed products, when carrying out new testing process in order to solve; Must reinstall new footmuff, sensor fixed support and turriform spring then can reuse.In the process of laboratory repetition test in enormous quantities, it is particularly evident that its advantage embodies.
Put at plastic foot; Four unique sensor telltale marks 24 have also been designed; Shown in accompanying drawing 4, in installation process, four telltale marks on the footmuff are alignd respectively with the actual scribing position of concrete surface; Then sensor is placed in the circumferential notch zone of reservation, can guarantees precisely putting in place of calibrate AE sensor installation site.In addition, the circumferential notch zone that the diameter dimension with calibrate AE sensor that the centre of plastics footmuff is reserved is suitable also can guarantee the evenly smooth of application calibrate AE sensor couplant, and this is helpful for improving signal quality.
The utility model deviceFixing means is:
(1) surface smoothness of inspection concrete sample.The rough and uneven in surface place of concrete surface should polish flat by means of angle grinding machine, sand paper etc., to guarantee that calibrate AE sensor can safely contact with concrete surface effectively.
(2) confirm the installation position of calibrate AE sensor.Confirm the accurate position of required laying calibrate AE sensor at concrete surface; Draw orthogonal two line segments with pencil and ruler at concrete surface through this point then; The length of line segment should be slightly larger than the length and the width of plastics footmuff in the accompanying drawing 3 respectively, so that telltale mark that plastic foot is put and pencil setting-out contrast and confirm the position.
(3) location and stickup plastics footmuff.With four sensor telltale marks of plastics footmuff respectively with step 2 in the orthogonal cross line segment mentioned align; Then the side of 502 quick setting cements from the plastics footmuff slowly splashed between plastics footmuff and the concrete surface of contact equably; After treating that glue dries is condensed; Remove and lay pressure, accomplish the fixing of plastics footmuff.In this process, should be noted that the consumption of 502 glue, be as the criterion not produce tangible water clock, in order to avoid influence sticking effect.
(4) even application calibrate AE sensor couplant (vaseline).Utilize little spatula evenly to smear petrolatum layer at the depression position of the border circular areas shown in the accompanying drawing 3, (width of little spatula should be slightly larger than the diameter of border circular areas) guarantees couplant thickness and this border circular areas thickness (being about 1mm) of plastics footmuff circumference on every side.In the process of operation, should guarantee that the couplant layer smears smooth, full.
(5) sensor installation fixed support.Among the plastics footmuff with the first insertion of a support bracket fastened batter one side; And move to the end of this direction to this direction, till can not moving, next to the end minute-pressure fixed support of exerting oneself; It is aimed at the plastic foot cover porch of opposite side; Firmly support is moved to this direction, till main body rack is positioned at two plastics footmuff center positions, guarantee that just the support bracket fastened outward flange of calibrate AE sensor is concordant with the outward flange of plastics footmuff.
(6) fixed sound emission sensor.At first sensor cover is upwards slightly mentioned, so that there are enough spaces to place calibrate AE sensor with finger.Then calibrate AE sensor is put into the circular recessed region of plastics footmuff; Guarantee that sensor is positioned at the center position of sunk area and fits tight with concrete surface; Discharge simultaneously lifting force gently, till sensor is fixed steadily to sensor cover.At last, calibrate AE sensor is under the pressure effect of turriform spring, by the firm safe concrete surface that is fixed in.
(7) check that all connecting lines are accurate after, begin to carry out acoustic emission monitor(ing).
(8) dismounting of sensor.At first with finger sensor cover is upwards slightly mentioned, release is applied to the fixation pressure on the calibrate AE sensor, takes calibrate AE sensor then away and discharges the power that lifts to sensor cover.The sensor fixed support along in footmuff, moving mobile direction, is shifted to the end of an end.Slightly upwards mention bearing then, and, can accomplish the dismounting work of sensor support base along the reverse direction mobile support saddle.
Claims (5)
1. calibrate AE sensor stationary installation that is used for concrete surface; It is characterized in that, comprise sensor fixed support, spring, sensor cover and footmuff, described footmuff is arranged on the support bracket fastened lower end of sensor; Comprise a substrate at described footmuff; Described substrate is provided with the breach of a placement calibrate AE sensor, the fixing described spring of lower surface above the corresponding breach of sensor fixed support, and the lower end of spring connects described sensor cover.
2. the stationary installation that is used for the calibrate AE sensor of concrete surface according to claim 1; It is characterized in that; Two ends at described substrate also are respectively arranged with a slot; Described breach is provided with two pins in described sensor fixed support lower end between two slots, described pin inserts described slot.
3. the stationary installation that is used for the calibrate AE sensor of concrete surface according to claim 1 or claim 2; It is characterized in that; Be respectively arranged with two at the two ends of the length direction of described footmuff and Width and be provided with the sensor telltale mark; Sensor telltale mark on the length direction is at the center of Width, and the telltale mark on the Width is at the center of length direction.
4. like the said stationary installation that is used for the calibrate AE sensor of concrete surface of claim 3, it is characterized in that described breach is circular, the thickness of this circumferential notch is 1mm.
5. like the said stationary installation that is used for the calibrate AE sensor of concrete surface of claim 3, it is characterized in that described spring is the turriform spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201909677U CN202562889U (en) | 2012-05-02 | 2012-05-02 | Fixing device for acoustic emission sensor on concrete surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201909677U CN202562889U (en) | 2012-05-02 | 2012-05-02 | Fixing device for acoustic emission sensor on concrete surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202562889U true CN202562889U (en) | 2012-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201909677U Expired - Fee Related CN202562889U (en) | 2012-05-02 | 2012-05-02 | Fixing device for acoustic emission sensor on concrete surface |
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|---|---|
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661999A (en) * | 2012-05-02 | 2012-09-12 | 河海大学 | Acoustic emission sensor fixing device for concrete surface |
| CN103926316A (en) * | 2014-04-23 | 2014-07-16 | 北京中铁通电务技术开发有限公司 | External locking device flaw detector |
| CN107101886A (en) * | 2017-04-27 | 2017-08-29 | 天津大学 | The acoustic emission sensor fixing device and its fixing means of plain type |
| CN109405952A (en) * | 2017-08-18 | 2019-03-01 | 北京林业大学 | A kind of sound proof box and test macro and test method using the sound proof box |
| CN113478421A (en) * | 2021-07-06 | 2021-10-08 | 大连理工大学 | Piezoelectric wafer mounting fixture |
-
2012
- 2012-05-02 CN CN2012201909677U patent/CN202562889U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102661999A (en) * | 2012-05-02 | 2012-09-12 | 河海大学 | Acoustic emission sensor fixing device for concrete surface |
| CN103926316A (en) * | 2014-04-23 | 2014-07-16 | 北京中铁通电务技术开发有限公司 | External locking device flaw detector |
| CN103926316B (en) * | 2014-04-23 | 2017-03-08 | 北京中铁通电务技术开发有限公司 | A kind of external locking device crack detector |
| CN107101886A (en) * | 2017-04-27 | 2017-08-29 | 天津大学 | The acoustic emission sensor fixing device and its fixing means of plain type |
| CN109405952A (en) * | 2017-08-18 | 2019-03-01 | 北京林业大学 | A kind of sound proof box and test macro and test method using the sound proof box |
| CN113478421A (en) * | 2021-07-06 | 2021-10-08 | 大连理工大学 | Piezoelectric wafer mounting fixture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121128 Termination date: 20150502 |
|
| EXPY | Termination of patent right or utility model |