CN201149587Y - Fixed bearing with continuously adjustable clamping force for acoustic emission sensor - Google Patents
Fixed bearing with continuously adjustable clamping force for acoustic emission sensor Download PDFInfo
- Publication number
- CN201149587Y CN201149587Y CNU2008200521634U CN200820052163U CN201149587Y CN 201149587 Y CN201149587 Y CN 201149587Y CN U2008200521634 U CNU2008200521634 U CN U2008200521634U CN 200820052163 U CN200820052163 U CN 200820052163U CN 201149587 Y CN201149587 Y CN 201149587Y
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- sensor
- bearing
- holding part
- continuously adjustable
- calibrate
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Abstract
The utility model discloses an acoustic emission sensor fixed support with continuous and adjustable chucking power, which comprises a support and a cover plate positioned at the top part of the support, the support is provided with a governing mechanism containing part and a sensor containing part communicated with each other from top to bottom, the sensor containing part is positioned at the bottom part of the support, a governing mechanism is arranged in the governing mechanism containing part, the governing mechanism comprises an adjusting bolt, an upper spring seat, a regulating spring and a lower spring seat, the regulating spring is clamped between the upper spring seat and the lower spring seat, one end of the adjusting bolt is positioned at the outer side of the support, and the other end thereof is in matching connection with the upper spring seat. The fixed support is the acoustic emission sensor fixed support with continuous and adjustable chucking power having the advantages of simple and compact structure, light weight and continuous adjustment to acting force of chucking the sensor, so the test precision of the sensor can be improved.
Description
Technical field
The utility model is mainly concerned with the design field of acoustic emission detection system, refers in particular to the continuously adjustable calibrate AE sensor hold-down support of a kind of holding force.
Background technology
In the prior art, acoustic emission is exactly a material when being subjected to external force or endogenetic process to produce distortion or crackle, discharges the phenomenon of strain energy with the form of elastic wave, and wherein a part of strain energy discharges with the form of acoustic emission wave.Calibrate AE sensor is exactly a kind of detecting device that this acoustic emission stress wave is converted to electric signal.Calibrate AE sensor is one of important composition of acoustic emission detection system, is the main tool of carrying out material and member Research on Mechanical Properties.It not only can be used for the Research on Mechanical Properties of metal material and parts, as strength test, yield point test, the test of KIC value, torture test, stress corrosion (cracking) test etc.; The Research on Mechanical Properties that also can be used for nonmetallic materials and member, as the Research on Mechanical Properties of ROCK MECHANICS RESEARCH, concrete or reinforced concrete research, stupalith, and the Research on Mechanical Properties of other compound substance.
In acoustic emission signal detected, the effect of sensor was converted to electric signal to acoustic emission wave exactly, and be input in the prime amplifier.Before acoustic emission wave arrives sensor, to in each sample testing, all to use through the good acoustic couplant of contact between test specimen and the sensor with a kind of couplant, pressure between test specimen and the sensor is consistent, could obtains reliable result like this.
The size that sensor bears pressure in experiment be difficult for to be measured, but the method for it and fixation of sensor has substantial connection.For example: when material tensile test was done at the scene by certain unit, sample was holded up and, and sensor will be installed in the side of sample, and when having twined with medical proof fabric when fixing, the acoustic emission signal of reception only is interior 100 parts of sound source scope; When the rubber belt with the bigger similar medical transparent hose of elastic force substitutes the outside that medical proof fabric is entangled in test specimen and sensor, and when straining as far as possible, because the elastic force increase has increased the pressure between test specimen and the sensor, the acoustic emission signal that receive this moment can expand 10000 parts in the sound source scope to, i.e. the sensitivity of sensor has improved 100 times.
The installation of finding out sensor thus is very big for the pressure influence between sensor and the test specimen.If the condition of each side is all identical when testing at every turn, and sensor is different with contact force between the test specimen, and this brings very big difficulty to later data analysis meeting.Therefore the installation situation of the calibrate AE sensor under various occasions is quite important.
At present, the general couplant that adopts oil such as butter and vaseline in acoustic emission detection system, the outside is tied up fixing with adhesive tape, bungee elastomeric material again.On the test specimen of steel or container, also have and to use the magnetic Fixing clamp-seat, adopt the magnetic deck to fix calibrate AE sensor many advantages are arranged: because sensor is to be adsorbed on the test specimen surface by the magnetic deck, so do not need additional other device, give and use, operate and brought convenience; In addition, sensor and sample are fixed by spring when adopting the magnetic deck, and the coupling ratio between them is more uniform and stable.But this device also has some shortcomings: the one, and size is bigger, when specimen surface shape more complicated, is difficult for installing especially; The 2nd, the unloading inconvenience particularly needing the bigger occasion of magnetic force (as long on-site supervision time), because very big magnetic attracting power is arranged between deck and the sample, is difficult to dismounting, and specimen surface is scratched; The 3rd, length of spring compressed is during to the sensor application of force, if the coupling that deflection can influence sensor takes place.
The utility model content
Problem to be solved in the utility model just is: at the technical matters of prior art existence, the utility model provides a kind of acting force simple and compact for structure, light and handy, the clamping sensor to adjust continuously, thereby can improve the continuously adjustable calibrate AE sensor hold-down support of holding force of sensor test precision.
For solving the problems of the technologies described above, the solution that the utility model proposes is: the continuously adjustable calibrate AE sensor hold-down support of a kind of holding force, it is characterized in that: it comprises bearing and is positioned at the cover plate at bearing top, offer the governor motion holding part and the sensor holding part that are interconnected in the described bearing from top to bottom, described sensor holding part is positioned at the bottom of bearing, be equiped with governor motion in the governor motion holding part, governor motion comprises the adjusting bolt, upper spring seat, regulating spring and lower spring cup, described regulating spring is located between upper spring seat and the lower spring cup, regulate bolt one end and be positioned at the bearing outside, the other end and upper spring seat are connected.
The bottom of described bearing is provided with one or more magnet holding part, is used for preventing that bearing from producing the magnet cartridge that moves horizontally and being located in the magnet holding part.
The described bearing upper cover plate outside is provided with an index dial that links to each other with the adjusting bolt.
Described rest base offers the groove that is used for placing with sensor signal lines.
The bottom of described sensor holding part offers the pad that is used for the object under test surface engagement.
Compared with prior art, advantage of the present utility model just is:
1, the continuously adjustable calibrate AE sensor hold-down support of the utility model holding force, acting force simple and compact for structure, light and handy, the clamping sensor can be adjusted continuously, improved the sensor test precision greatly, and fixing applicable to the sensor of different model size.
2, in the continuously adjustable calibrate AE sensor hold-down support of the utility model holding force, contact pressure between sensor and the test specimen to be measured can be adjusted continuously by spring, and the size that can show contact force by the reading of abutment surface index dial, eliminated because human factor and mounting condition difference to the influence of test result precision, reduce and measure and analytical error;
3, the continuously adjustable calibrate AE sensor hold-down support of the utility model holding force, the signal extension line that links to each other with sensor is directly put into the groove of sensor fastening device, and is attractive in appearance, practical, and wiring is more convenient;
4, in the continuously adjustable calibrate AE sensor hold-down support of the utility model holding force, to the sensor application of force, deflection can not take place in stress equalization by upper and lower spring base;
5, in the continuously adjustable calibrate AE sensor hold-down support of the utility model holding force, the magnet that utilizes rest base to be embedded can prevent that the bearing generation from moving horizontally, and improves measuring accuracy.
Description of drawings
Fig. 1 is a main TV structure synoptic diagram of the present utility model;
Fig. 2 be among Fig. 1 A to structural representation;
Fig. 3 is a plan structure synoptic diagram of the present utility model.
Marginal data
1, cover plate 2, adjusting bolt
3, bearing 4, upper spring seat
5, regulating spring 6, lower spring cup
7, magnet 8, index dial
9, pad 10, groove
11, sensor holding part 12, governor motion holding part
13, magnet holding part
Embodiment
Below with reference to the drawings and specific embodiments the utility model is described in further details.
As Fig. 1, Fig. 2 and shown in Figure 3, the continuously adjustable calibrate AE sensor hold-down support of a kind of holding force of the present utility model, it comprises bearing 3 and is positioned at the cover plate 1 at bearing 3 tops, offer the governor motion holding part 12 and the sensor holding part 11 that are interconnected in the described bearing 3 from top to bottom, described sensor holding part 11 is positioned at the bottom of bearing 3, be equiped with governor motion in the governor motion holding part 12, governor motion comprises regulates bolt 2, upper spring seat 4, regulating spring 5 and lower spring cup 6, described regulating spring 5 is located between upper spring seat 4 and the lower spring cup 6, regulate bolt 2 one ends and be positioned at bearing 3 outsides, the other end and upper spring seat 4 are connected.In the present embodiment, bearing 3 can adopt nonmetallic materials to make (for example duroplasts), and volume is little, in light weight, be easy to processing.Bearing 3 lower central position hollow outs are the inversion U-shaped, and sensor is placed in one, and its height is complementary with hold-down support 3.In preferred embodiment, the bottom of bearing 3 is provided with one or more magnet holding part 13, is used for preventing that bearing 3 from producing the magnet 7 that moves horizontally and being installed in the magnet holding part 13.In the present embodiment, place, symmetry both sides, the bottom of bearing 3 hollow out forms magnet holding part 13, and horseshoe magnet 7 is bumped into wherein, is used for fixing bearing 3, prevents that bearing 3 from moving.Bearing 3 upper cover plates 1 outside is provided with an index dial 8 that links to each other with adjusting bolt 2, along with the index dial 8 of regulating bolt 2 rotations can in time show the adjusting situation.Bearing 3 bottoms offer the groove 10 that is used for placing with sensor signal lines, and the signal wire that is communicated with sensor and detection system all is installed in wherein, and attractive in appearance, practical, wiring is more convenient.The bottom of sensor holding part 11 offers the pad 9 that is used for the object under test surface engagement, in preferred embodiment, can design the different arc pad 9 of a series of curvature, can be used under the situation that body surface to be tested has certain radian.When being particularly useful for bearing seat and other spherical container surface, the arc pad 9 that selection and test surfaces are complementary is installed between sensor and the test plane, can solve because the sensor measurement error that the test surfaces injustice causes.
During use, hold-down support 3 is placed on the object under test, sensor is installed in the sensor holding part 11, the upper end of sensor contacts with the lower spring cup of governor motion 6, the lower end contacts with object under test by pad 9, utilizes the magnetic force of magnet holding part 13 internal magnets 7 that bearing 3 is fixed on the test block surface simultaneously.Then, by regulating the force of compression of bolt 2 regulating springs 5, thereby adjust the pressure between sensor and the surface of contact, after adjusting, index dial 8 record springs 5 positions by bearing 3 surfaces, keep spring 5 positions identical in other process of the test under carrying out same test conditions, can eliminate owing to the measuring error that reason causes is installed.
Claims (7)
1, the continuously adjustable calibrate AE sensor hold-down support of a kind of holding force, it is characterized in that: it comprises bearing (3) and is positioned at the cover plate (1) at bearing (3) top, offer the governor motion holding part (12) and the sensor holding part (11) that are interconnected in the described bearing (3) from top to bottom, described sensor holding part (11) is positioned at the bottom of bearing (3), the governor motion holding part is equiped with governor motion in (12), governor motion comprises regulates bolt (2), upper spring seat (4), regulating spring (5) and lower spring cup (6), described regulating spring (5) is located between upper spring seat (4) and the lower spring cup (6), regulate bolt (2) one ends and be positioned at bearing (3) outside, the other end and upper spring seat (4) are connected.
2, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 1, it is characterized in that: the bottom of described bearing (3) is provided with one or more magnet holding part (13), is used for preventing that bearing (3) from producing the magnet (7) that moves horizontally and being installed in the magnet holding part (13).
3, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 1 and 2 is characterized in that: described bearing (3) upper cover plate (1) outside is provided with an index dial (8) that links to each other with adjusting bolt (2).
4, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 1 and 2 is characterized in that: described bearing (3) bottom offers the groove (10) that is used for placing with sensor signal lines.
5, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 3 is characterized in that: described bearing (3) bottom offers the groove (10) that is used for placing with sensor signal lines.
6, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 1 and 2 is characterized in that: the bottom of described sensor holding part (11) offers the pad (9) that is used for the object under test surface engagement.
7, the continuously adjustable calibrate AE sensor hold-down support of holding force according to claim 5 is characterized in that: the bottom of described sensor holding part (11) offers the pad (9) that is used for the object under test surface engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200521634U CN201149587Y (en) | 2008-01-22 | 2008-01-22 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200521634U CN201149587Y (en) | 2008-01-22 | 2008-01-22 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201149587Y true CN201149587Y (en) | 2008-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200521634U Expired - Fee Related CN201149587Y (en) | 2008-01-22 | 2008-01-22 | Fixed bearing with continuously adjustable clamping force for acoustic emission sensor |
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Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305881A (en) * | 2011-05-25 | 2012-01-04 | 北京兴迪仪器有限责任公司 | Adsorption device for acoustic emission sensor |
| CN102879028A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Adaptive magnetic fixture for ultrasonic detection sensors |
| 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 |
| CN104913976A (en) * | 2015-06-03 | 2015-09-16 | 北京科技大学 | Temperature-controllable rock uniaxial compression sound emission test device and temperature-controllable rock uniaxial compression sound emission test method |
| CN104949703A (en) * | 2015-06-23 | 2015-09-30 | 宜科(天津)电子有限公司 | Sensor bracket |
| CN105136912A (en) * | 2015-08-24 | 2015-12-09 | 中国石油天然气集团公司 | Sound emission detection sensor fixing device |
| CN105203634A (en) * | 2015-10-26 | 2015-12-30 | 国家电网公司 | Device for nondestructive testing of hydrogenerator stator bar splice joints |
| CN105203640A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Embedded type acoustic emission sensing system |
| CN105424806A (en) * | 2015-12-14 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Defect detecting and recording device for bar parallel connector of hydro-generator |
| CN105510211A (en) * | 2015-11-26 | 2016-04-20 | 天津亿利科能源科技发展股份有限公司 | Underwater cross-under pipe on-line monitoring device |
| CN106546664A (en) * | 2016-11-22 | 2017-03-29 | 重庆交通大学 | A kind of auxiliary device of Steel Wire Surface placement sensor |
| CN106958742A (en) * | 2017-03-08 | 2017-07-18 | 武汉理工大学 | The optical fiber grating sensing pipeline health monitoring systems of many reference amounts |
| CN107063144A (en) * | 2017-06-23 | 2017-08-18 | 四川大学 | A kind of acoustic emission monitoring system |
| CN107121697A (en) * | 2017-06-23 | 2017-09-01 | 四川大学 | A kind of rock-burst monitoring acoustic sensor |
| CN107313763A (en) * | 2017-06-23 | 2017-11-03 | 四川大学 | Engineering rock mass acoustic emission monitor(ing) and Transmission system |
| CN106770677B (en) * | 2017-01-03 | 2018-05-22 | 南京航空航天大学 | Non-contact strain field combines integral type measuring system and method with sound emission |
| CN109900437A (en) * | 2017-12-08 | 2019-06-18 | 中国石油化工股份有限公司 | Valves leakage detection device |
| CN110261490A (en) * | 2019-07-25 | 2019-09-20 | 中国计量大学 | A kind of fixed device of easy magnetic acoustic emission sensor and its fixing means |
| CN111766017A (en) * | 2020-05-22 | 2020-10-13 | 中国航发贵州红林航空动力控制科技有限公司 | Nozzle baffle leakproofness inspection universal device |
| CN113478421A (en) * | 2021-07-06 | 2021-10-08 | 大连理工大学 | Piezoelectric wafer mounting fixture |
| CN114235968A (en) * | 2022-02-28 | 2022-03-25 | 中国科学院地质与地球物理研究所 | Acoustic emission probe fixing device, acoustic emission probe fixing assembly and acoustic emission probe fixing method |
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
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2008
- 2008-01-22 CN CNU2008200521634U patent/CN201149587Y/en not_active Expired - Fee Related
Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102305881A (en) * | 2011-05-25 | 2012-01-04 | 北京兴迪仪器有限责任公司 | Adsorption device for acoustic emission sensor |
| CN102879028A (en) * | 2012-10-10 | 2013-01-16 | 北京理工大学 | Adaptive magnetic fixture for ultrasonic detection sensors |
| 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 |
| 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 |
| CN104913976A (en) * | 2015-06-03 | 2015-09-16 | 北京科技大学 | Temperature-controllable rock uniaxial compression sound emission test device and temperature-controllable rock uniaxial compression sound emission test method |
| CN104949703A (en) * | 2015-06-23 | 2015-09-30 | 宜科(天津)电子有限公司 | Sensor bracket |
| CN105136912A (en) * | 2015-08-24 | 2015-12-09 | 中国石油天然气集团公司 | Sound emission detection sensor fixing device |
| CN105203640A (en) * | 2015-09-18 | 2015-12-30 | 天津大学 | Embedded type acoustic emission sensing system |
| CN105203634A (en) * | 2015-10-26 | 2015-12-30 | 国家电网公司 | Device for nondestructive testing of hydrogenerator stator bar splice joints |
| CN105203634B (en) * | 2015-10-26 | 2018-04-27 | 国家电网公司 | Suitable for turbine generator stator bar and the device of connector Non-Destructive Testing |
| CN105510211A (en) * | 2015-11-26 | 2016-04-20 | 天津亿利科能源科技发展股份有限公司 | Underwater cross-under pipe on-line monitoring device |
| CN105424806A (en) * | 2015-12-14 | 2016-03-23 | 华北电力科学研究院有限责任公司 | Defect detecting and recording device for bar parallel connector of hydro-generator |
| CN106546664A (en) * | 2016-11-22 | 2017-03-29 | 重庆交通大学 | A kind of auxiliary device of Steel Wire Surface placement sensor |
| CN106770677B (en) * | 2017-01-03 | 2018-05-22 | 南京航空航天大学 | Non-contact strain field combines integral type measuring system and method with sound emission |
| CN106958742A (en) * | 2017-03-08 | 2017-07-18 | 武汉理工大学 | The optical fiber grating sensing pipeline health monitoring systems of many reference amounts |
| CN107313763A (en) * | 2017-06-23 | 2017-11-03 | 四川大学 | Engineering rock mass acoustic emission monitor(ing) and Transmission system |
| CN107121697A (en) * | 2017-06-23 | 2017-09-01 | 四川大学 | A kind of rock-burst monitoring acoustic sensor |
| CN107063144A (en) * | 2017-06-23 | 2017-08-18 | 四川大学 | A kind of acoustic emission monitoring system |
| CN107063144B (en) * | 2017-06-23 | 2019-07-30 | 四川大学 | A kind of acoustic emission monitoring system |
| CN107313763B (en) * | 2017-06-23 | 2020-01-10 | 四川大学 | Acoustic emission monitoring and transmission system for engineering rock mass |
| CN109900437A (en) * | 2017-12-08 | 2019-06-18 | 中国石油化工股份有限公司 | Valves leakage detection device |
| CN110261490A (en) * | 2019-07-25 | 2019-09-20 | 中国计量大学 | A kind of fixed device of easy magnetic acoustic emission sensor and its fixing means |
| CN111766017A (en) * | 2020-05-22 | 2020-10-13 | 中国航发贵州红林航空动力控制科技有限公司 | Nozzle baffle leakproofness inspection universal device |
| CN113478421A (en) * | 2021-07-06 | 2021-10-08 | 大连理工大学 | Piezoelectric wafer mounting fixture |
| CN114371219A (en) * | 2021-12-27 | 2022-04-19 | 桂林理工大学 | Adapter of replaceable irregular surface acoustic emission sensor |
| CN114235968A (en) * | 2022-02-28 | 2022-03-25 | 中国科学院地质与地球物理研究所 | Acoustic emission probe fixing device, acoustic emission probe fixing assembly and acoustic emission probe fixing method |
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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: 20081112 Termination date: 20120122 |