CN107727740A - A kind of circular array impact image instrument excites and reception device - Google Patents
A kind of circular array impact image instrument excites and reception device Download PDFInfo
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- CN107727740A CN107727740A CN201710983698.7A CN201710983698A CN107727740A CN 107727740 A CN107727740 A CN 107727740A CN 201710983698 A CN201710983698 A CN 201710983698A CN 107727740 A CN107727740 A CN 107727740A
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- upper plate
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/04—Analysing solids
- G01N29/045—Analysing solids by imparting shocks to the workpiece and detecting the vibrations or the acoustic waves caused by the shocks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/34—Generating the ultrasonic, sonic or infrasonic waves, e.g. electronic circuits specially adapted therefor
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- Acoustics & Sound (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The present invention relates to civil engineering technical field of nondestructive testing,Specifically a kind of circular array impact image instrument excites and reception device,Electromagnetism hammer including casing upper plate and installed in casing upper plate circle centre position,The electromagnetism hammer is fixedly mounted in hammer containment vessel,The hammer containment vessel is fixedly connected with casing upper plate,Eight sensor probes for being used to receive data are evenly equipped with the circumference of the casing upper plate,The flexible part of arranged for interval between the sensor probe,The sensor probe is arranged on the middle part of vertical bearing,The vertical bearing is fixedly mounted in probe fixed plate,The outermost of the probe fixed plate is provided with dust-separation outer cover,The advantage of the invention is that the system can realize continuous free arousal function,And excite strength controllable,The present invention, which possesses, continuously freely to be excited,And excite strength controllable function,System anti-vibration,Strong antijamming capability,Acquisition speed is fast,Efficiency high,Quality is good,System self-adaption ability is strong.
Description
Technical field
The present invention relates to civil engineering technical field of nondestructive testing, specifically a kind of circular array impact image instrument swashs
Hair and reception device.
Background technology
Often it is related to large-sized concrete Structural Engineering in civil engineering industry, such as high-speed railway, tunnel, large-scale hydraulic structure
Deng.Compared with general concrete structure, the concrete amount of large-sized concrete structure is big, engineering specifications is complicated, construction technology will
Ask high.In concreting process, because its volume is big, speed of perfusion is fast, often there is deficiency in equipment, personnel depaly etc.
Situation, effect of vibrating is not easy to meet to require, inside configuration has cavity, the bad engineering phenomenon such as gap.Meanwhile concrete is solid
During knot, the heat of hydration is larger, structure is produced uneven temperature strain, so as to the caused larger temperature under effect of contraction
Spend stress.Because concrete material tensile strength is about 1/10th of compression strength, body structure surface and inside are easily because of inequality
Even temperature stress produces the damage such as crack.The presence in inside concrete cavity, crack etc., will be to engineering structure normal work shape
Load-carrying properties, security under state produce considerable influence.For hydraulic structures, under higher effect of water pressure, its antiseepage
Performance will drastically decline, and structure durability and service life are a greater impact.Imaging Method is impacted as large-scale concrete engineering
The new method of Inner Defect Testing, in concrete structure pouring effect assessment, compactness inspection, internal flaw investigation, tunnel lining
Build quality testing etc. more and more to be applied, be also accumulated from abundant engineering experience.It is in structure to impact Imaging Method
Surface applies small temporary impact, and stress wave is produced in inside configuration.Stress wave will occur at positions such as interface, crack, cavities
Phenomena such as reflection, refraction, and cause the small response wave shape of body structure surface.Response wave shape received by sensor, handle after, according to
The information such as wavelength, response energy, mean amplitude of tide can make accurate judgement to defective locations, geometric shape etc..Impact Imaging Method
There is fast easy to operate, speed, efficiency high, repeatable test, in large-sized concrete internal flaw field of non destructive testing
It is with a wide range of applications and important application value.Neck is detected in the construction quality and reliability of large-sized concrete structure
Domain, impact Imaging Method still have several drawbacks do not possess automatic arousal function still, and its antijamming capability etc. can also be carried further
It is high.It is most important that deep research and development are carried out to impact Imaging Method detecting system.
Following defect be present in existing impact image instrument：
Excite automatically 1. can not realize, control excitation force function
Existing impact mapping method, using artificial hammering mode of excitation, it is difficult to keep identical to excite dynamics and focus inclined
Move away from human factor has a great influence to result, is unfavorable for the standardization of method and the quantization of result.
2. detection efficiency is low, easily by random disturbances
For existing impact Imaging Method using a sensor and hammering mode of excitation, as a result randomness is larger, sharp in order to mitigate
The Random Effect of hair point and receiving point local characteristicses (if any dust, grains of sand etc.), it is general using repeatedly exciting, then stacked data
The mode added, significantly reduces detection efficiency.
3. easily trembleed, blown by human hand, the interference such as external acoustic waves
Existing impact Imaging Method sets efficiency and flexibility to improve sensor, will by the way of hand-held sensor
Sensor is pressed in detection faces.The vibration of human hand directly affects the quality of detection data, while sensor is exposed to external rings
In border, easily disturbed by wind and rain, external noise etc..
The content of the invention
In order to solve technical problem existing for above-mentioned existing civil engineering Non-Destructive Testing, the present invention provides a kind of circular array
Impact image instrument excites and reception device, it is possible to achieve continuous free arousal function, and excite strength controllable.System employs more
Kind elastic damping component, and take a variety of shielding electromagnetic induction measures, system anti-vibration, strong antijamming capability.Meanwhile system
Vibrating sensor uses annular array, and is divided into two kinds of mode of operations, accuracy of detection height, good resolution to medium.In addition, adopt
With flexible connection rod member, system can be stablized stands in dielectric surface certainly, and realizes good coupling, system self-adaption ability by deadweight
By force.Finally, system can quickly, move freely, acquisition speed is fast, efficiency high, precision are good.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of circular array impact image instrument excites and reception device, including casing upper plate and installed in the casing upper plate center of circle
The electromagnetism hammer at place, the electromagnetism hammer are fixedly mounted in hammer containment vessel, and the hammer containment vessel and casing upper plate are fixed
Connection, is evenly equipped with eight sensor probes for being used to receive data on the circumference of the casing upper plate, the sensor probe it
Between the flexible part of arranged for interval, the sensor probe is arranged on the middle part of vertical bearing, and the vertical bearing is fixedly mounted on
In fixed plate of popping one's head in, the outermost of the probe fixed plate is provided with dust-separation outer cover, the external diameter of the probe fixed plate be less than every
The internal diameter of dirt outer cover, the dust-separation outer cover are fixedly mounted on the downside of casing upper plate, and the dust-separation outer cover is consolidated by screw-driving
The downside of casing upper plate is scheduled on, the elastic component includes the axis of guide and is socketed in the damping spring of axis of guide periphery, the guiding
The upper end of axle is fixed on the lower surface of casing upper plate, and the bottom of the axis of guide is fixedly mounted on the upper end of casing lower plate
On face, the damping spring of each elastic component has one group, is separately mounted to the both sides up and down of probe fixed plate, and the elastic component shares
Eight groups, every group of elastic component is arranged on the middle part of adjacent sensors probe, and casing lower plate is provided with the downside of the probe fixed plate,
The upper end of the casing upper plate is provided with work handle.
Further, the electromagnetism hammer is located at array geometry center, and is fixed on central chamber, the electricity of electromagnetism hammer
Source line is connected by the exciting switch on main connection bar and action bars with programmable controller, and programmable controller is by computer control
System, can be by instruction selection single-shot, multiple stimuli method or coding arousal function.
Further, the excitation energy size of the electromagnetism hammer is controlled by electrical current, Controlled by Programmable Controller electricity
Size is flowed, the stroke positive correlation for exciting dynamics and percussion hammer of the electromagnetism hammer, stroke is bigger, and dynamics is bigger.
Further, force sensor is installed on the percussion hammer of the electromagnetism hammer, by excitation force and can receives
Elastic wave data are recorded simultaneously, and eliminate the influence of excitation force difference in data processing link.
Further, the sensor probe arranges circumferentially by same angle, equidistantly, and center is exciting focus, respectively
Sensor offset is away from consistent, in the case where once exciting, data that system will obtain eight sensors simultaneously and collect, and annular arrangement side
Formula can improve the antijamming capability of system, while data acquisition quality is higher, and in the case where once exciting, system will collect eight
Data.Acquisition system is divided into two kinds of mode of operations of high-resolution and standard resolution.Under high score example's pattern, respectively to eight
The data of sensor are handled, and obtain the testing result in eight orientation, and acquisition system precision is high；In standard resolution pattern
Under, sensing data is applied to form a testing result, can Integrative expression centered on shot point, between shot point and sensor
Testing result away from the border circular areas for radius, acquisition system strong antijamming capability.
Further, in the electromagnetism hammer shots, certain reaction force will be produced, for avoid sensor by
Vibration interference, first, electromagnetism excitation device is fixed on central chamber, using the shock insulation material such as rubber sheet gasket, exciter entered
The processing of row shock insulation；Secondly, vibration isolation connecting rod plays damping function of shock insulation using flexible, elastomeric material, such as rubber rods；Finally,
Shock insulation protective cover connects that bar is fixed with main, and its underpart and sensor have certain spacing, and using flexible, elastomeric material,
Play function of shock insulation.
Further, the electromagnetism excitation device of the electromagnetism hammer is electromagnetic induction device, and electric current is not in the operating condition for it
Disconnected change；For shielding electric signal and magnetic signal, the antijamming capability of sensor, connecting line etc. is improved, first fills electromagnetism excitation
Put to seal up for safekeeping and possess electro-magnetic screen function in central chamber, central lumen；Secondly, vibration detector arrays are also enclosed in electricity simultaneously
In magnetic screen shell；Again, each connecting line is with function of shielding；Finally, shock insulation protective cover top uses steel, maskable outer
The interference of boundary's electromagnetic signal.
The beneficial effects of the invention are as follows：The advantage of the invention is that devising a kind of integral type impact Imaging Method excites reception
System.The system can realize continuous free arousal function, and excite strength controllable.System employs a variety of elastic damping structures
Part, and take a variety of shielding electromagnetic induction measures, system anti-vibration, strong antijamming capability.Meanwhile system vibration sensor is adopted
With annular array, and it is divided into two kinds of mode of operations, good resolution high to the accuracy of detection of medium.In addition, using flexible jointing-rod
Part, system can be stablized stands in dielectric surface certainly, and realizes good coupling by conducting oneself with dignity, and system self-adaption ability is strong.Finally, system
Can quickly, move freely, acquisition speed is fast, efficiency high, precision are good.Therefore, the present invention, which possesses, continuously freely excites and swashs
The amount of having an effect controllable function, system anti-vibration, strong antijamming capability, acquisition speed is fast, efficiency high, quality are good, and system is adaptive
Should be able to power it is strong.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the top view of the present invention.
In figure：1st, casing upper plate, 2, electromagnetism hammer, 3, dust-separation outer cover, 4, sensor probe, 5, hammer containment vessel, 6, lead
To axle, 7, damping spring, 8, vertical bearing, 9, work handle, 10, probe fixed plate, 11, casing lower plate.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As Figure 1-Figure 2, Fig. 1 is the structural representation of the present invention, and Fig. 2 is the top view of the present invention.
As a preferred embodiment of the invention, a kind of circular array impact image instrument of the present invention is excited and connect
Receiving apparatus, including casing upper plate 1 and the electromagnetism hammer 2 installed in the circle centre position of casing upper plate 1, the electromagnetism hammer 2 are fixedly mounted
In hammer containment vessel 5, the hammer containment vessel 5 is fixedly connected with casing upper plate 1, uniform on the circumference of the casing upper plate 1
There are eight to be used to receiving the sensor probes 4 of data, the flexible part of arranged for interval between the sensor probe 4, the sensing
Device probe 4 is arranged on the middle part of vertical bearing 8, and the vertical bearing 8 is fixedly mounted in probe fixed plate 10, and the probe is solid
The outermost of fixed board 10 is provided with dust-separation outer cover 3, and the external diameter of the probe fixed plate 10 is less than the internal diameter of dust-separation outer cover 3, described
Dust-separation outer cover 3 is fixedly mounted on the downside of casing upper plate 1, and the dust-separation outer cover 3 is fixed on casing upper plate 1 by screw-driving
Downside, the elastic component include the axis of guide 6 and are socketed in the damping spring 7 of the periphery of the axis of guide 6, the upper end of the axis of guide 6
It is fixed on the lower surface of casing upper plate 1, the bottom of the axis of guide 6 is fixedly mounted on the upper surface of casing lower plate 11,
The damping spring 7 of each elastic component has one group, is separately mounted to the both sides up and down of probe fixed plate 10, and the elastic component shares eight
Group, every group of elastic component are arranged on the middle part of adjacent sensors probe 4, and the downside of the probe fixed plate 10 is provided with casing lower plate
11, the upper end of the casing upper plate 1 is provided with work handle 9, and the electromagnetism is hit, 2 are located at array geometry center, and is fixed on
In chambers of the heart room, the power line of electromagnetism hammer 2 is connected by the exciting switch on main connection bar and action bars with programmable controller,
Programmable controller is controlled by computer, can be by instruction selection single-shot, multiple stimuli method or coding arousal function, the electromagnetism
Hit, 2 excitation energy size is controlled by electrical current, and Controlled by Programmable Controller size of current, the electromagnetism hammer excites
The stroke positive correlation of dynamics and percussion hammer, stroke is bigger, and dynamics is bigger, and the electromagnetism is hit, the strong sensing of installation on 2 percussion hammer
Device, by excitation force and the elastic wave received data while it can record, and it is poor in data processing link to eliminate excitation force
Different influence, the sensor are visited, and 4 by same angle, equidistantly circumferentially, center is exciting focus, and each sensor is inclined for arrangement
Move away from consistent, in the case where once exciting, data that system will obtain eight sensors simultaneously and collect, annular arrangement mode can improve
The antijamming capability of system, while data acquisition quality is higher, in the case where once exciting, system will collect eight data, adopt
Collecting system is divided into two kinds of mode of operations of high-resolution and standard resolution.Under high score example's pattern, respectively to eight sensors
Data handled, obtain the testing result in eight orientation, acquisition system precision is high；Under standard resolution pattern, sensing
Device data are applied to form a testing result, can Integrative expression centered on shot point, shot point and sensor spacing be half
The testing result of the border circular areas in footpath, acquisition system strong antijamming capability, in the shots of electromagnetism hammer 2, one will be produced
Fixed reaction force, to avoid sensor interference vibrated, first, electromagnetism excitation device is fixed on central chamber, used
The shock insulation material such as rubber sheet gasket, shock insulation processing is carried out to exciter；Secondly, vibration isolation connecting rod is using flexible, elastomeric material, such as rubber
Glue bar etc., play damping function of shock insulation；Finally, shock insulation protective cover and the main bar that connects are fixed, and its underpart has one with sensor
Fixed spacing, and using flexible, elastomeric material, function of shock insulation is played, the electromagnetism is hit, and 2 electromagnetism excitation device is electromagnetic induction
Device, electric current constantly changes in the operating condition for it；For shielding electric signal and magnetic signal, the anti-of sensor, connecting line etc. is improved
Interference performance, Electromagnetic excitation device is sealed up for safekeeping possess electro-magnetic screen function in central chamber, central lumen first；Secondly, shake
Dynamic sensor array is also enclosed in shielding casing simultaneously；Again, each connecting line is with function of shielding；Finally, shock insulation
Protective cover top uses steel, the interference of maskable external electromagnetic signal.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (7)
1. a kind of circular array impact image instrument excites and reception device, it is characterised in that including casing upper plate and installed in machine
The electromagnetism hammer of shell upper plate circle centre position, the electromagnetism hammer are fixedly mounted in hammer containment vessel, the hammer containment vessel and machine
Shell upper plate is fixedly connected, and eight sensor probes for being used to receive data, the biography are evenly equipped with the circumference of the casing upper plate
The flexible part of arranged for interval between sensor probe, the sensor probe are arranged on the middle part of vertical bearing, the vertical bearing
It is fixedly mounted in probe fixed plate, the outermost of the probe fixed plate is provided with dust-separation outer cover, the probe fixed plate
External diameter is less than the internal diameter of dust-separation outer cover, and the dust-separation outer cover is fixedly mounted on the downside of casing upper plate, and the dust-separation outer cover passes through
Screw-driving is fixed on the downside of casing upper plate, and the elastic component includes the axis of guide and is socketed in the damping bullet of axis of guide periphery
Spring, the upper end of the axis of guide are fixed on the lower surface of casing upper plate, and the bottom of the axis of guide is fixedly mounted on machine
On the upper surface of shell lower plate, the damping spring of each elastic component has one group, is separately mounted to the both sides up and down of probe fixed plate, institute
State elastic component and share eight groups, every group of elastic component is arranged on the middle part of adjacent sensors probe, is set on the downside of the probe fixed plate
Casing lower plate is equipped with, the upper end of the casing upper plate is provided with work handle.
2. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
Electromagnetism hammer is located at array geometry center, and is fixed on central chamber, and the power line of electromagnetism hammer passes through main connection bar and behaviour
The exciting switch made on bar is connected with programmable controller, and programmable controller is controlled by computer.
3. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
The excitation energy size of electromagnetism hammer is controlled by electrical current, Controlled by Programmable Controller size of current, the electromagnetism hammer
Excite the stroke positive correlation of dynamics and percussion hammer.
4. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
Force sensor is installed on the percussion hammer of electromagnetism hammer.
5. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
Sensor probe is by same angle, equidistantly circumferentially, center is exciting focus for arrangement, and each sensor offset is away from consistent, one
Secondary to excite down, system will obtain the data that collect of eight sensors simultaneously.
6. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
Electromagnetism hammer is fixed on central chamber, and using the shock insulation material such as rubber sheet gasket, shock insulation processing is carried out to exciter.
7. a kind of circular array impact image instrument according to claim 1 excites and reception device, it is characterised in that：It is described
The electromagnetism excitation device of electromagnetism hammer is electromagnetic induction device, and electric current constantly changes in the operating condition for it.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983698.7A CN107727740A (en) | 2017-10-20 | 2017-10-20 | A kind of circular array impact image instrument excites and reception device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710983698.7A CN107727740A (en) | 2017-10-20 | 2017-10-20 | A kind of circular array impact image instrument excites and reception device |
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| Publication Number | Publication Date |
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| CN107727740A true CN107727740A (en) | 2018-02-23 |
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| CN201710983698.7A Pending CN107727740A (en) | 2017-10-20 | 2017-10-20 | A kind of circular array impact image instrument excites and reception device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680575A (en) * | 2012-05-17 | 2012-09-19 | 上海交通大学 | Impact mapping method and system for complicated rock-soil medium |
| CN103926328A (en) * | 2014-03-18 | 2014-07-16 | 中铁山桥集团有限公司 | Ultrasonic wave detection scanning apparatus capable of achieving stable coupling |
| CN106324096A (en) * | 2016-08-31 | 2017-01-11 | 南通筑升土木工程科技有限责任公司 | One-piece shock image mode exciting and receiving device |
-
2017
- 2017-10-20 CN CN201710983698.7A patent/CN107727740A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102680575A (en) * | 2012-05-17 | 2012-09-19 | 上海交通大学 | Impact mapping method and system for complicated rock-soil medium |
| CN103926328A (en) * | 2014-03-18 | 2014-07-16 | 中铁山桥集团有限公司 | Ultrasonic wave detection scanning apparatus capable of achieving stable coupling |
| CN106324096A (en) * | 2016-08-31 | 2017-01-11 | 南通筑升土木工程科技有限责任公司 | One-piece shock image mode exciting and receiving device |
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Application publication date: 20180223 |