CN108931581A - A kind of road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse - Google Patents
A kind of road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse Download PDFInfo
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- CN108931581A CN108931581A CN201811056461.5A CN201811056461A CN108931581A CN 108931581 A CN108931581 A CN 108931581A CN 201811056461 A CN201811056461 A CN 201811056461A CN 108931581 A CN108931581 A CN 108931581A
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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
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/225—Supports, positioning or alignment in moving situation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/023—Solids
- G01N2291/0232—Glass, ceramics, concrete or stone
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/02—Indexing codes associated with the analysed material
- G01N2291/028—Material parameters
- G01N2291/0289—Internal structure, e.g. defects, grain size, texture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2291/00—Indexing codes associated with group G01N29/00
- G01N2291/04—Wave modes and trajectories
- G01N2291/042—Wave modes
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- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The road surface that the invention discloses a kind of based on ultrasonic pulse is self-regulated nondestructive inspection trolley, includes trolley actuating mechanism, flaw detection pipe, waveform acquisition device, waveform processor；Trolley actuating mechanism includes platform framework, driving motor, car body supporting mechanism, the mounting of roof plate of platform framework has height adjustment cylinder directed downwardly, the piston rod of height adjustment cylinder is connected with pressing plate, car body supporting mechanism includes front left support adjustment mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, right support regulating mechanism afterwards, front left support adjustment mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, right support regulating mechanism has respectively included upper support bar afterwards, lower support bar, the present invention carries out without damage testing existing road surface using ultrasonic pulse testing principle, and road surface breakage degree is evaluated using detection data.
Description
Technical field
The present invention relates to road surface technical field of nondestructive inspection, especially a kind of road surface nondestructive inspection based on ultrasonic pulse is small
Vehicle.
Background technique
Drop hammer deflection meter abbreviation FWD is current pavement strength state-of-the-art in the world without one of device for detecting breakage, is led to
Measurement hydraulic trolley is crossed to start the device that drops hammer, is freely to be fallen by dropping hammer for certain mass from certain altitude, the impact masterpiece
On loading plate and it is transmitted to road surface, so that road pavement applies impulsive load, road surface is caused to generate instantaneous deformation, record
Dynamic deflection under signal namely dynamic loads effect, test data can be used for inverse and go out road surface pavement layer modulus by trolley,
But it can only measure to obtain the data within the scope of 3~4 meters away from load center, not be suitable for carrying out a wide range of long-term follow sight to road network
It surveys；Currently existing ultrasonic imaging scanner can carry out concrete and fibre reinforced concrete under manual hand manipulation thick
Degree measurement and defect location, but it is only limitted to the manual measurement of some detection point, it is difficult to the continuity for adapting to large area is surveyed
Amount requires.
The breakage on road surface is not only intricate, but also reason is also very complicated, and there is presently no the automations of universal applicability
Measuring instrument can be used, the method generallyd use have range estimation investigation method, two kinds of photographic recording method, wherein range estimation investigation method not
It is only time-consuming to take people, and the comparativity of data and repeatability are all poor；Photographic recording method is the method record using camera shooting
The breakage on road surface determines types of damage, severity and range, photography note by artificial interpretation or the method for image recognition
The workload that the later data processing of record method calculates is huge, and costly and relative error is also big.
Summary of the invention
The road surface that the object of the present invention is to provide a kind of based on ultrasonic pulse is self-regulated nondestructive inspection trolley, utilizes ultrasound
Pulse detection principle carries out without damage testing existing road surface, and evaluates road surface breakage degree using detection data.
The technical solution adopted in the present invention is as follows:
A kind of road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse, includes trolley actuating mechanism, flaw detection pipe, wave
Shape collector, waveform processor；
Trolley actuating mechanism includes platform framework, driving motor, car body supporting mechanism, and the mounting of roof plate of platform framework has
Height adjustment cylinder directed downwardly, the piston rod of height adjustment cylinder are connected with pressing plate, and car body supporting mechanism includes preceding left support
Regulating mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism, front left support adjustment mechanism,
Front right support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism have respectively included upper support bar, lower support
Bar, upper support bar top slide vertically on the bottom plate for being installed on platform framework, and pressing plate is pressed on upper support bar upper end, lower support bar
Upper end is fixedly installed with guide sleeve, between upper support bar lower part outer wall and guide sleeve inner wall slide-and-guide cooperate, upper support bar lower end with
Be equipped with height adjustment spring between lower support bar upper end, lower support bar bottom end is equipped with idler wheel, front left support adjustment mechanism with
Drive axle, rear left support adjustment mechanism and rear right support regulating mechanism are connected between the idler wheel of front right support adjustment mechanism
Rear drive shaft is connected between idler wheel, idler wheel is respectively arranged in the both ends of drive axle, rear drive shaft, and driving motor passes through transmission
Mechanism drives drive axle or rear drive shaft rotation.
The flaw detection pipe includes outer tube body, oscilloscope tube, signal receiving amplifier, and outer tube body top slides vertically installation
In on the bottom plate of platform framework, outer tube body upper end has boss, and outer tube body top is set with spring, spring upper end, lower end difference
Press in boss, platform framework bottom plate on, outer tube body bottom end be equipped with probe, signal receive amplifier in and probe export
End is connected, and receives amplifier out and is connected with oscilloscope tube, and oscilloscope tube is connected with the input interface of waveform acquisition device, wave
The output interface of shape collector is connected with waveform processor.
It is equipped in the drive axle or rear drive shaft by movable sprocket, front left support adjustment mechanism and preceding right support tune
It saves and is fixedly connected with mounting plate between the lower support bar of mechanism, driving motor is installed on mounting plate, the output shaft of driving motor
On drive sprocket is installed, by between movable sprocket and drive sprocket passed through drive chain be sequentially connected.
The upper support bar top is fixed with rest in the rest boss of platform framework bottom plate, and upper support bar lower part is set
There is limit step surface, limiting stand terrace is corresponding with the upper surface of guide sleeve.
The flaw detection pipe TiMaximum probe area SmaxFor symmetrical ellipse domain, maximum probe area Smax=S0+S1, wherein S0
For effective detecting area, detectivity η0=100%, S1To detect transition region, detectivity η1=(1-kxi) × 100, wherein k be
Ultrasonic wave attenuation coefficient, xiIt is any point at a distance from detection central point, works as η1When≤0, as to the point, there is no detection effects
It answers, through being fitted the SmaxIts absorbing boundary equation is x2+By2+Cy2=0, wherein B, C detectivity parameter, describedWherein a is elliptic domain short axle length, b is the long axial length of elliptic domain, described when detection faces are S, required
Flaw detection pipe number minimum value
The bottom plate of the platform framework includes the connecting plate of square frame and arranged crosswise, and four of square frame turn
It is respectively equipped with upper support bar mounting hole at angle, several flaw detection pipe mounting holes are provided on connecting plate.
Compared with prior art, beneficial effects of the present invention are as follows:
1) number of the invention that can arbitrarily adjust flaw detection pipe is completely continuous to carrying out between the origin and destination on detected road surface
Property detection, a single point, the detection data at line can only be accessed compared to existing equipment, nondestructive inspection trolley of the invention can obtain
To the breakage data in entire detection faces or region, to significantly improve the information content and accuracy of non-destructive testing.
2) present invention can make detection waveform corresponding with road surface breakage degree, accomplish quantitative analysis detection waveform and road surface
Relationship between damaged degree reflects the synthesis breakage for being detected road surface, and can increase data by duplicate measurements
Comparativity and detect that speed is fast, and precision is higher.
3) height adjustment spring of the invention is different from the stiffness factor for the spring that outer tube body top is set with, and makes when detecting
Height adjustment cylinder is to nondestructive inspection trolley when applying equal pressure, and the deformation quantity of two springs is different, to guarantee having hole
On the detected road surface of the badly brokens such as slot, flaw detection manages not when detection by the active force of height adjustment cylinder and causes to damage,
It is high to the adaptedness on detected road surface.
4) calculation method formulated according to ultrasound examination principle can guarantee detection while using minimum flaw detection pipe
Precision reduces capital investment high financial profit.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Fig. 2 is side view schematic diagram of the invention.
Fig. 3 is the structural diagram of base plate of platform framework of the present invention.
Figure label: 1 trolley actuating mechanism, 2 flaw detection pipes, 3 waveform acquisition devices, 4 waveform processors, 5 platform frameworks, 6 drive
Dynamic motor, 7 car body supporting mechanisms, 8 height adjustment cylinders, 9 pressing plates, 10 upper support bars, 11 lower support bars, 12 guide sleeves, 13 height
Adjustment spring, 14 idler wheels, 15 drive axles, 16 rear drive shafts, 17 outer tube bodies, 18 outer tube bodies, 19 signal receiving amplifiers, 20 visit
Head, 21 boss, 22 springs, 23 by movable sprocket, 24 drive sprockets, 25 drive chains, 26 limiting stand terraces, 27 rest boss, and 28
Mounting plate, 29 bottom plates, 30 connecting plates, 31 flaw detection pipe mounting holes, 32 upper support bar mounting holes.
Specific embodiment
Referring to attached drawing, a kind of road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse, includes trolley actuating mechanism
1, flaw detection pipe 2, waveform acquisition device 3, waveform processor 4；
Trolley actuating mechanism 1 includes platform framework 5, driving motor 6, car body supporting mechanism 7, the top plate of platform framework 5
Height adjustment cylinder 8 directed downwardly is installed, the piston rod of height adjustment cylinder 8 is connected with pressing plate 9, and car body supporting mechanism 7 includes
There are front left support adjustment mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism, front left branch
Support regulating mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism have respectively included support
Bar 10, lower support bar 11,10 top of upper support bar slide vertically on the bottom plate 29 for being installed on platform framework 5, and pressing plate 9 is pressed on
10 upper end of support rod, 11 upper end of lower support bar are fixedly installed with guide sleeve 12,10 lower part outer wall of upper support bar and 12 inner wall of guide sleeve it
Between slide-and-guide cooperate, be equipped with height adjustment spring 13, lower support between 11 upper end of 10 lower end of upper support bar and lower support bar
11 bottom end of bar is equipped with idler wheel 14, is connected with forerunner between front left support adjustment mechanism and the idler wheel 14 of front right support adjustment mechanism
Moving axis 15, is connected with rear drive shaft 16 between rear left support adjustment mechanism and the idler wheel of rear right support regulating mechanism, idler wheel 14 divides
It is not installed on the both ends of drive axle 15, rear drive shaft 16, driving motor 6 drives drive axle 15 or rear-guard by transmission mechanism
Moving axis 16 rotates；
Pipe 2 of detecting a flaw includes outer tube body 17, oscilloscope tube 18, signal receiving amplifier 19, and 17 top of outer tube body slides vertically
It is installed on the bottom plate of platform framework 5,17 upper end of outer tube body has boss 21, and 17 top of outer tube body is set with spring 22, spring
22 upper ends, lower end press respectively in boss 21, platform framework 5 bottom plate on, 17 bottom end of outer tube body be equipped with probe 20, signal receive
19 input terminal of amplifier is connected with 20 output ends of probe, receives 19 output end of amplifier and is connected with oscilloscope tube 18, oscilloscope tube
18 are connected with the input interface of waveform acquisition device 3, and the output interface of waveform acquisition device 3 is connected with waveform processor 4；
It is equipped in drive axle 15 or rear drive shaft 16 by movable sprocket 23, front left support adjustment mechanism and preceding right support tune
It saves and is fixedly connected with mounting plate 28 between the lower support bar 11 of mechanism, driving motor 6 is installed on mounting plate 28, driving motor 6
Output shaft on drive sprocket 24 is installed, by between movable sprocket 23 and drive sprocket 24 pass through drive chain 25 be sequentially connected；
10 top of upper support bar is fixed with rest in the rest boss 27 of 5 bottom plate of platform framework, 10 lower part of upper support bar
Equipped with limiting stand terrace 26, limiting stand terrace 26 is corresponding with the upper surface of guide sleeve 12；
Detect a flaw pipe TiMaximum probe area SmaxFor symmetrical ellipse domain, maximum probe area Smax=S0+S1, wherein S0It is effective
Detecting area, detectivity η0=100%, S1To detect transition region, detectivity η1=(1-kxi) × 100, wherein k is ultrasonic wave
Attenuation coefficient, xiIt is any point at a distance from detection central point, works as η1When≤0, as to the point, there is no detection effects, through quasi-
Close the SmaxIts absorbing boundary equation is x2+By2+Cy2=0, wherein B, C detectivity parameter, describedIts
Middle a is elliptic domain short axle length, b is the long axial length of elliptic domain, when detection faces are S, the several minimum values of required flaw detection pipe 2
The bottom plate 29 of platform framework 5 includes the connecting plate 30 of square frame and arranged crosswise, and four of square frame
Corner is respectively equipped with upper support bar mounting hole 32, and several flaw detection pipe mounting holes 31 are provided on connecting plate 30.
Working principle of the present invention is as follows:
When the present invention carries out carrying out flaw detection, moved downward by the piston rod band dynamic pressure plate of height adjustment cylinder, while pressing plate
Pressed upper support bar overcomes height adjustment spring to move down, front left support adjustment mechanism, front right support adjustment mechanism, rear left branch
Support regulating mechanism, rear right support regulating mechanism height adjustment spring be different deformation quantities, with adapt to be detected road surface height
Uneven situation.Pressing plate continues to move down, and contacts flaw detection pipe with detected road surface, inputs hair when being popped one's head in by flaw detection tube bottom end
Ejected wave and by be detected road surface when, if be detected region road surface exist damage, there will be back wave by flaw detection pipe in connecing
It after being amplified by amplifier and showing corresponding waveform on oscilloscope tube, and is acquired by waveform acquisition device, waveform processor receives
Waveform acquisition device acquisition shape information and storage, waveform is converted into road surface breakage situation by calculation formula.
Wherein, the stiffness factor of height adjustment spring is k1, the stiffness factor for the spring that outer tube body top is set with is k2,
And k1≥k2, i.e., when height adjustment cylinder applies same pressure F, the deformation quantity of height adjustment spring is less than or equal on outer tube body
The deformation quantity for the spring that portion is set with, to guarantee when flaw detection pipe on the detected road surface for have the badly brokens such as pit slot is not because of detection
It pressurizes and causes to damage.
Claims (5)
- The nondestructive inspection trolley 1. a kind of road surface based on ultrasonic pulse is self-regulated, which is characterized in that include trolley actuating mechanism, Flaw detection pipe, waveform acquisition device, waveform processor；Trolley actuating mechanism includes platform framework, driving motor, car body supporting mechanism, and the mounting of roof plate of platform framework has downward Height adjustment cylinder, the piston rod of height adjustment cylinder is connected with pressing plate, and left support is adjusted before car body supporting mechanism includes Mechanism, front right support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism, front left support adjustment mechanism, front right Support adjustment mechanism, rear left support adjustment mechanism, rear right support regulating mechanism have respectively included upper support bar, lower support bar, on Support rod top slides vertically on the bottom plate for being installed on platform framework, and pressing plate is pressed on upper support bar upper end, lower support bar upper end It is fixedly installed with guide sleeve, slide-and-guide cooperates between upper support bar lower part outer wall and guide sleeve inner wall, upper support bar lower end and lower branch Height adjustment spring is equipped between strut upper end, lower support bar bottom end is equipped with idler wheel, front left support adjustment mechanism and front right Drive axle, the idler wheel of rear left support adjustment mechanism and rear right support regulating mechanism are connected between the idler wheel of support adjustment mechanism Between be connected with rear drive shaft, idler wheel is respectively arranged in the both ends of drive axle, rear drive shaft, and driving motor passes through transmission mechanism Drive drive axle or rear drive shaft rotation；The flaw detection pipe includes outer tube body, oscilloscope tube, signal receiving amplifier, outer tube body top slide vertically be installed on it is flat On the bottom plate of table frame, outer tube body upper end has boss, and outer tube body top is set with spring, and spring upper end, lower end press respectively In boss, platform framework bottom plate on, outer tube body bottom end be equipped with probe, signal receive amplifier in pop one's head in output end phase Connection, receives amplifier out and is connected with oscilloscope tube, oscilloscope tube is connected with the input interface of waveform acquisition device, and waveform is adopted The output interface of storage is connected with waveform processor.
- 2. the road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse according to claim 1, which is characterized in that described It is equipped in drive axle or rear drive shaft by movable sprocket, the lower support of front left support adjustment mechanism and front right support adjustment mechanism Mounting plate is fixedly connected between bar, driving motor is installed on mounting plate, is equipped with drive chain on the output shaft of driving motor Wheel is sequentially connected between movable sprocket and drive sprocket by driving chain.
- 3. the road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse according to claim 1, which is characterized in that described Upper support bar top is fixed with rest in the rest boss of platform framework bottom plate, and upper support bar lower part is equipped with limiting stand terrace, Limiting stand terrace is corresponding with the upper surface of guide sleeve.
- 4. the road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse according to claim 1, which is characterized in that the spy Hurt pipe TiMaximum probe area SmaxFor symmetrical ellipse domain, maximum probe area Smax=S0+S1, wherein S0For effective detecting area, visit Survey rate η0=100%, S1To detect transition region, detectivity η1=(1-kxi) × 100, wherein k is ultrasonic wave attenuation coefficient, xi It is any point at a distance from detection central point, works as η1When≤0, as to the point, there is no detection effects, through being fitted the SmaxIts Absorbing boundary equation is x2+By2+Cy2=0, wherein B, C detectivity parameter, describedWherein a is that elliptic domain is short Axial length, b are the long axial length of elliptic domain, described when detection faces are S, required flaw detection pipe number minimum value
- 5. the road surface self-regulation nondestructive inspection trolley based on ultrasonic pulse according to claim 1, which is characterized in that described flat The bottom plate of table frame includes the connecting plate of square frame and arranged crosswise, and four corners of square frame are respectively equipped with Support rod mounting hole is provided with several flaw detection pipe mounting holes on connecting plate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811056461.5A CN108931581B (en) | 2018-09-11 | 2018-09-11 | Pavement self-adjusting nondestructive inspection trolley based on ultrasonic pulse |
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| CN201811056461.5A CN108931581B (en) | 2018-09-11 | 2018-09-11 | Pavement self-adjusting nondestructive inspection trolley based on ultrasonic pulse |
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Cited By (1)
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| CN111289612A (en) * | 2020-03-04 | 2020-06-16 | 淮阴师范学院 | Ultrasonic detection device for concrete detection |
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