CN211844442U - Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection - Google Patents
Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection Download PDFInfo
- Publication number
- CN211844442U CN211844442U CN202020514408.1U CN202020514408U CN211844442U CN 211844442 U CN211844442 U CN 211844442U CN 202020514408 U CN202020514408 U CN 202020514408U CN 211844442 U CN211844442 U CN 211844442U
- Authority
- CN
- China
- Prior art keywords
- longitudinal
- air coupling
- transducer
- trolley
- vertical
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 235000019687 Lamb Nutrition 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 title description 19
- 230000007246 mechanism Effects 0.000 claims abstract description 112
- 238000006073 displacement reaction Methods 0.000 claims abstract description 85
- 230000008878 coupling Effects 0.000 claims abstract description 56
- 238000010168 coupling process Methods 0.000 claims abstract description 56
- 238000005859 coupling reaction Methods 0.000 claims abstract description 56
- 238000007689 inspection Methods 0.000 claims description 37
- 238000009434 installation Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 230000005284 excitation Effects 0.000 description 19
- 238000004458 analytical method Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000000750 progressive effect Effects 0.000 description 2
- 238000011897 real-time detection Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000005570 vertical transmission Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000037072 sun protection Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Landscapes
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
The utility model discloses a signal acquisition device based on ultrasonic lamb wave plate-type ballastless track crack detects, examine the dolly and set up the ultrasonic transmitter-receiver on the dolly including the rail, still include air coupling ultrasonic transducer and angle adjustment mechanism, air coupling ultrasonic transducer includes that air coupling supersound arouses transducer and air coupling supersound receiving transducer, air coupling supersound arouses transducer and ultrasonic transmitter-receiver's transmitting terminal signal connection, air coupling supersound receiving transducer and ultrasonic transmitter-receiver's receiving terminal signal connection, air coupling supersound arouses transducer and air coupling supersound receiving transducer and all connects on angle adjustment mechanism, angle adjustment mechanism is connected with a triaxial displacement adjustment mechanism, and triaxial displacement adjustment mechanism fixed connection examines the front end of dolly at the rail. The utility model provides a signal acquisition device can high-efficient, harmless, real-time collection board-like ballastless track fissured signal.
Description
Technical Field
The utility model relates to a signal acquisition device based on ultrasonic lamb wave plate-type ballastless track crack detects belongs to track defect detection technical field.
Background
By the end of 2019, the Chinese railway construction completes tasks in excess: it is expected that 50 projects, new lines, will be put on throughout the year for over 7000 km, with 20 projects on high-speed rail, new lines breaking through 4000 km. The national railway operating mileage reaches 13.9 kilometers, wherein the high-speed rail is 3.5 kilometers and is the first place in the world. The most important ring in the Chinese high-speed rail network is the slab ballastless track, and the digestion and absorption slab ballastless track technology introduced from abroad in China from the last 90 th century is widely applied to the construction of high-speed railways in China at present, so that the high-speed rail technology in China is at the world leading level.
The production of the plate-type ballastless track has extremely high requirements on concrete, so that the track plate has enough strength and can bear the high-speed impact of a train; the plate-type ballastless track can completely meet the running requirement of a train for more than 300 km/h. Meanwhile, the slab ballastless track has high stability and long service life, and can reduce the maintenance work in the later period. However, in the face of a plurality of factors such as high-load continuous operation and variable environment, a large number of cracks are generated on the plate-type ballastless track, and the train operation and the personal safety of passengers are seriously affected.
At present, the track slab detection work is mainly carried out by manual inspection, the time of an effective skylight used for line repair and maintenance is only 2-3 hours in the track traffic, and the thread of a high-speed railway is very long, so that the inspection task is very arduous, a large amount of manpower is consumed, an inspector is hard to work, the maintenance cost is very high, the detection quality cannot be guaranteed, and defects cannot be timely discovered, so that potential hazards exist in railway safety.
SUMMERY OF THE UTILITY MODEL
The above-mentioned problem to prior art exists, the utility model aims at providing a signal acquisition device based on ultrasonic lamb wave plate formula ballastless track crack detects to solve present high-speed railway and patrol and examine the problem that work is numerous, inefficiency, provide timely early warning and powerful aassessment means for the daily track board damage of high-speed railway detects.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a signal acquisition device based on ultrasonic lamb wave plate-type ballastless track crack detects, includes that the track examines the dolly and sets up the ultrasonic transmitter-receiver on the track examines the dolly, still includes air coupling ultrasonic transducer and angle adjustment mechanism, air coupling ultrasonic transducer includes that air coupling supersound arouses transducer and air coupling supersound receiving transducer, air coupling supersound arouses transducer and ultrasonic transmitter-receiver's transmitting terminal signal connection, and air coupling supersound receiving transducer and ultrasonic transmitter-receiver's receiving terminal signal connection, air coupling supersound arouses transducer and air coupling supersound receiving transducer and all connects on angle adjustment mechanism, angle adjustment mechanism is connected with a triaxial displacement adjustment mechanism, just triaxial displacement adjustment mechanism fixed connection examines the front end of dolly at the track.
The utility model provides an embodiment is equipped with two angle adjustment mechanism, and every angle adjustment mechanism all corresponds and is equipped with rotation motor and connecting piece, it is connected with triaxial displacement adjustment mechanism through the connecting piece to rotate the motor, air coupling supersound arouses transducer and air coupling supersound receiving transducer to connect respectively in the pivot of the rotation motor that corresponds.
The utility model provides an embodiment, triaxial displacement adjustment mechanism includes longitudinal displacement adjustment mechanism, vertical displacement adjustment mechanism and lateral displacement adjustment mechanism, angle adjustment mechanism is connected with the longitudinal displacement adjustment mechanism that corresponds respectively, longitudinal displacement adjustment mechanism is connected with the vertical displacement adjustment mechanism that corresponds respectively, vertical displacement adjustment mechanism is connected with lateral displacement adjustment mechanism, just lateral displacement adjustment mechanism fixed connection examines the front end of dolly at the rail.
According to the preferable scheme, the longitudinal displacement adjusting mechanism comprises a longitudinal driving motor, a longitudinal mounting base, a longitudinal screw rod and a longitudinal sliding block, the longitudinal driving motor is fixedly connected to the longitudinal mounting base, one end of the longitudinal screw rod is fixed to the output end of the longitudinal driving motor, the longitudinal sliding block is arranged on the longitudinal screw rod in a sliding mode, and the angle adjusting mechanism is connected with the longitudinal sliding block.
According to a preferred scheme, a limit switch is arranged on the longitudinal installation base.
The utility model provides a preferred scheme, vertical displacement adjustment mechanism includes vertical driving motor, vertical extension board, vertical mobile connector and vertical conveying base, vertical mobile connector reciprocates along vertical conveying base under vertical driving motor's drive, vertical extension board is connected with vertical conveying base through vertical mobile connector, longitudinal displacement adjustment mechanism is connected with vertical extension board.
The utility model provides a preferred scheme, lateral displacement adjustment mechanism includes horizontal driving motor, horizontal installation base, horizontal lead screw and horizontal slider, horizontal driving motor fixed connection is on horizontal installation base, the output at horizontal driving motor is fixed to the one end of horizontal lead screw, horizontal slider slides and locates on the horizontal lead screw, vertical displacement adjustment mechanism is connected with horizontal slider, horizontal installation base fixed connection is at the front end of examining the dolly on the rail.
According to the optimal scheme, the front end of the rail inspection trolley is provided with the connecting beam, and the transverse displacement adjusting mechanism is fixedly connected to the front end of the rail inspection trolley through the connecting beam.
The rail inspection trolley comprises a trolley base, a trolley driving motor, a trolley driving wheel and a trolley driven wheel, wherein the trolley driving wheel and the trolley driven wheel are fixed under the trolley base, and the trolley driving motor is fixed on a transmission shaft between the trolley driving wheels.
According to a preferable scheme, a mobile power supply is further arranged on the rail inspection trolley.
According to a preferable scheme, a line concentration counter is further arranged on the rail inspection trolley.
According to a preferable scheme, a lighting lamp is further arranged on the rail inspection trolley.
According to a preferable scheme, the rail inspection trolley is further provided with a camera.
Compared with the prior art, the utility model has the advantages of:
the utility model provides a signal acquisition device is equipped with ultrasonic transceiver, air coupling supersound arouses transducer and air coupling supersound receiving transducer, can gather the supersound lamb wave signal in the track board, for follow-up utilizing supersound lamb wave signal to set down solid basis to track board crack detection, compare in the signal acquisition mode of traditional supersound nondestructive test, signal acquisition is easier; in addition, the air coupling ultrasonic excitation transducer and the air coupling ultrasonic receiving transducer of the utility model can move, thereby effectively improving the signal acquisition range, further improving the detection range of the rail inspection trolley and realizing the dynamic acquisition of signals; the signal acquisition device can be used for nondestructive detection of the track slab crack, can realize efficient, nondestructive, accurate and real-time detection of the ballastless track crack, can provide timely early warning and powerful guarantee for the safe operation of a high-speed rail, and can provide powerful support for the subsequent track maintenance work; therefore, compared with the prior art, the utility model, have apparent progressive nature and using value.
Drawings
Fig. 1 is a schematic structural diagram of a signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection provided in an embodiment of the present invention;
fig. 2 is a state diagram of the signal acquisition device provided in the embodiment of the present invention when used for detection work;
the numbers in the figures are as follows: 1. a rail inspection trolley; 2. an angle adjusting mechanism; 21a/21b, a rotating motor; 22a/22b, connecting pieces; 3. a longitudinal displacement adjustment mechanism; 31a/31b, a longitudinal driving motor; 32a/32b, a longitudinal mounting base; 33a, a longitudinal screw rod; 34a/34b, longitudinal slide block; 35a/35b, limit switch; 4. an air-coupled ultrasonic probe; 4a, an air coupling ultrasonic excitation transducer; 4b, an air coupling ultrasonic receiving transducer; 5. a vertical displacement adjustment mechanism; 51a/51b, a vertical drive motor; 52a/52b, vertically extending plates; 53a/53b, vertical movement connection; 54a/54b, a vertical transport base; 6. a lateral displacement adjustment mechanism; 61a/61b, a transverse driving motor; 62a/62b, a transverse mounting base; 63a/63b, a transverse screw rod; 64a/64b, lateral slide block; 7. a connecting beam; 8. a driving wheel pair; 9. a driven wheel; 10. a drive motor; 11. a trolley base; 12. A signal analyzing device; 13. a camera; 14. an illuminating lamp; 15. an ultrasonic transmitter-receiver; 16 line concentration counter; 17. a mobile power supply; 18. a stool; 19. a steel rail; 20 track plate.
Detailed Description
The technical solution of the present invention will be further clearly and completely described below with reference to the accompanying drawings and examples.
Examples
With reference to fig. 1 to 2: the utility model provides a signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection, which comprises a track inspection trolley 1, an ultrasonic transmitter-receiver 15 arranged on the track inspection trolley 1, an air coupling ultrasonic probe 4 and an angle adjusting mechanism 2, the air-coupled ultrasonic probe 4 comprises an air-coupled ultrasonic excitation transducer 4a and an air-coupled ultrasonic receiving transducer 4b, the air coupling ultrasonic excitation transducer 4a is in signal connection with the transmitting end of the ultrasonic transmitting receiver 15, the air coupling ultrasonic receiving transducer 4b is in signal connection with the receiving end of the ultrasonic transmitting receiver 15, the air coupling ultrasonic excitation transducer 4a and the air coupling ultrasonic receiving transducer 4b are both connected on the angle adjusting mechanism 2, the angle adjusting mechanism 2 is connected with a three-axis displacement adjusting mechanism, and the three-axis displacement adjusting mechanism is fixedly connected to the front end of the rail inspection trolley 1.
In this embodiment, the air-coupled ultrasonic excitation transducer 4a, the air-coupled ultrasonic receiving transducer 4b, and the ultrasonic transmitter-receiver 15 may be commercially available ones.
In this embodiment, two angle adjusting mechanisms 2 are provided, each angle adjusting mechanism 2 is correspondingly provided with a rotating motor 21a/21b and a connecting piece 22a/22b, the rotating motor 21a/21b is connected with the three-axis displacement adjusting mechanism through the connecting piece 22a/22b, and the air-coupled ultrasonic excitation transducer 4a and the air-coupled ultrasonic receiving transducer 4b are respectively connected to the rotating shafts of the corresponding rotating motors 21a/21 b.
In this embodiment, triaxial displacement adjustment mechanism includes longitudinal displacement adjustment mechanism 3, vertical displacement adjustment mechanism 5 and transverse displacement adjustment mechanism 6, angle adjustment mechanism 2 is connected with corresponding longitudinal displacement adjustment mechanism 3 respectively, longitudinal displacement adjustment mechanism 3 is connected with corresponding vertical displacement adjustment mechanism 5 respectively, vertical displacement adjustment mechanism 5 is connected with transverse displacement adjustment mechanism 6, just transverse displacement adjustment mechanism 6 fixed connection examines the front end of dolly 1 at the rail.
In this embodiment, two longitudinal displacement adjusting mechanisms 3 are provided, which may be a group and a group b, respectively, and specifically, the longitudinal displacement adjusting mechanism 3 includes a longitudinal driving motor 31a/31b, a longitudinal mounting base 32a/32b, a longitudinal screw 33a (not shown in the figure of the longitudinal screw corresponding to the group b) and a longitudinal slider 34a/34b, the longitudinal driving motor 31a/31b is fixedly connected to the longitudinal mounting base 32a/32b, one end of the longitudinal screw 33a (the group b of the corresponding longitudinal screws is not shown in the figure) is fixed at the output end of the longitudinal driving motor 31a/31b, the longitudinal sliding blocks 34a/34b are slidably arranged on longitudinal screw rods 33a (the longitudinal screw rods corresponding to the group b are not shown in the figure), and the angle adjusting mechanism 2 is connected with the longitudinal sliding blocks 34a/34 b. Specifically, the connecting pieces 22a/22b in the angle adjusting mechanism 2 are connected with the longitudinal sliding blocks 34a/34b, the angle adjusting mechanism 2 is connected with the longitudinal displacement adjusting mechanism 3 through the connection of the connecting pieces 22a/22b and the longitudinal sliding blocks 34a/34b, and further the air-coupled ultrasonic excitation transducer 4a and the air-coupled ultrasonic receiving transducer 4b are connected with the longitudinal displacement adjusting mechanism 3. The longitudinal driving motor 31a/31b may be a commercially available constant speed motor. When the device is used, the longitudinal driving motor 31a/31b drives the longitudinal screw 33a, and further drives the longitudinal slide block 34a/34b to move on the longitudinal screw 33 a.
In addition, the longitudinal mounting base 32a/32b is provided with a limit switch 35a/35b, when the longitudinal slider 34a/34b passes through the limit switch 35a/35b, a sensor of the limit switch 35a/35b receives a signal to forcibly stop the rotation of the longitudinal driving motor 31a/31b, so that the longitudinal slider 34a/34b stops sliding, as can be seen from the above, in this embodiment, the air-coupled ultrasonic excitation transducer 4a and the air-coupled ultrasonic receiving transducer 4b are driven to move on the longitudinal displacement adjusting mechanism 3 by the sliding of the longitudinal slider 34a/34b, so that the movement of the air-coupled ultrasonic excitation transducer 4a and the air-coupled ultrasonic receiving transducer 4b can be limited by limiting the movement of the longitudinal slider 34a/34b through the limit switch 35a/35b, thereby protecting the air coupling ultrasonic excitation transducer 4a and the air coupling ultrasonic receiving transducer 4 b.
In this embodiment, two vertical displacement adjusting mechanisms 5 are also provided corresponding to the two longitudinal displacement adjusting mechanisms 3, and may be a group and a group b, respectively, where the vertical displacement adjusting mechanisms 5 include vertical driving motors 51a/51b, vertical extending plates 52a/52b, vertical moving connectors 53a/53b, and vertical conveying bases 54a/54b, the vertical moving connectors 53a/53b move up and down along the vertical conveying bases 54a/54b under the driving of the vertical driving motors 51a/51b, the vertical extending plates 52a/52b are connected with the vertical conveying bases 54a/54b through the vertical moving connectors 53a/53b, and the longitudinal displacement adjusting mechanisms 3 are connected with the vertical extending plates 52a/52 b. The vertical driving motors 51a/51b may be commercially available variable speed motors. The vertical moving coupling 53a/53b may be formed in an H-shape. Specifically, the longitudinal mounting base 32a/32b of the longitudinal displacement adjusting mechanism 3 is connected with the vertical extending plate 52a/52b, so that the longitudinal displacement adjusting mechanism 3 is connected with the vertical displacement adjusting mechanism 5. In this embodiment, a gear belt (not shown) may be disposed on the vertical transmission base 54a/54b, the gear belt is driven by the vertical driving motor 51a/51b, and correspondingly, the surface of the vertical moving connecting member 53a/53b has a gear engaging surface adapted to the gear belt, so that the gear belt is driven by the vertical driving motor 51a/51b to drive the vertical moving connecting member 53a/53b to move up and down along the vertical transmission base 54a/54 b.
In this embodiment, in order to make the connection between the vertical displacement adjusting mechanism 5 and the lateral displacement adjusting mechanism 6 more stable, two sets of lateral displacement adjusting mechanisms 6, a and b, may be provided, where the lateral displacement adjusting mechanism 6 includes a lateral driving motor 61a/61b, a lateral mounting base 62a/62b, a lateral lead screw 63a/63b, and a lateral slider 64a/64b, the lateral driving motor 61a/61b is fixedly connected to the lateral mounting base 62a/62b, one end of the lateral lead screw 63a/63b is fixed to the output end of the lateral driving motor 61a/61b, the lateral slider 64a/64b is slidably disposed on the lateral lead screw 63a/63b, the vertical displacement adjusting mechanism 5 is connected to the lateral slider 64a/64b, the transverse mounting base 62a/62b is fixedly connected to the front end of the rail inspection trolley 1. The lateral driving motor 61a/61b may be a commercially available high-power stepping motor. Specifically, the vertical transport base 54a/54b of the vertical displacement adjusting mechanism 5 is connected with the horizontal sliding block 64a/64b, so that the vertical displacement adjusting mechanism 5 is connected with the horizontal displacement adjusting mechanism 6. The transverse displacement adjusting mechanism 6 is fixedly connected to the front end of the rail inspection trolley 1 through a transverse mounting base 62a/62 b. When the transverse driving mechanism is used, the transverse driving motor 61a/61b drives the transverse screw rod 63a/63b, and further drives the transverse sliding block 64a/64b to move on the transverse screw rod 63a/63 b.
The three-axis displacement adjusting mechanism can realize free adjustment of the displacement of the air coupling ultrasonic excitation transducer 4a and the air coupling ultrasonic receiving transducer 4b, thereby effectively improving the flexibility, the accuracy and the signal acquisition range of signal acquisition of the air coupling ultrasonic excitation transducer 4a and the air coupling ultrasonic receiving transducer 4b, further effectively increasing the detection range of the rail inspection trolley 1 and realizing dynamic detection of the rail inspection trolley 1.
In addition, a connecting beam 7 is arranged at the front end of the rail inspection trolley 1, and the transverse displacement adjusting mechanism 6 is fixedly connected to the front end of the rail inspection trolley 1 through the connecting beam 7. Specifically, the transverse mounting base 62a/62b in the transverse displacement adjusting mechanism 6 is fixedly connected with the connecting beam 7, so that the transverse displacement adjusting mechanism 6 is fixedly connected to the front end of the rail inspection trolley 1.
In addition, the rail inspection trolley 1 comprises a trolley base 11, a trolley driving motor 10, a trolley driving wheel 8 and a trolley driven wheel 9, wherein the trolley driving wheel 8 and the trolley driven wheel 9 are fixed below the trolley base 11, and the trolley driving motor 10 is fixed on a transmission shaft (not marked) between the trolley driving wheels 8. The trolley driving motor 10, the trolley driving wheel 8 and the trolley driven wheel 9 are respectively a driving motor, a driving wheel and a driven wheel sold in the market. The trolley driving wheel 8 and the trolley driven wheel 9 are both driven by a trolley driving motor 10, and the trolley driving wheel 8 and the trolley driven wheel 9 are both in rolling connection with the steel rail 19. The driving wheel 8 and the driven wheel 9 can guide the running direction of the rail inspection trolley 1. When the rail inspection trolley 1 is used, the trolley driving motor 10 is turned on or off to start or stop the rotation of the trolley driving wheel 8 and the trolley driven wheel 9, and then the rail inspection trolley 1 is controlled to start and stop.
In addition, a mobile power supply 17 is further arranged on the rail inspection trolley 1 to realize mobile power supply of the device.
In addition, a line concentration counter 16 is arranged on the rail detection trolley 1 so as to realize the integration of all circuits in the device and achieve the effects of rain prevention and sun protection.
In addition, the rail inspection trolley 1 is also provided with an illuminating lamp 14 so as to meet the illumination requirement during night operation.
In addition, the rail inspection trolley 1 is further provided with a camera 13 for recording the rail plate number and initial evaluation of the surface crack of the rail plate (the camera 13 is used for processing machine vision to find the crack on the surface of the rail plate 20).
The illumination lamp 14 and the camera 13 are electrically connected to a portable power source 17.
In addition, a stool 18 is arranged on the rail inspection trolley 1 so that an inspector can sit on the rail inspection trolley 1 to perform manual signal acquisition and detection operation.
Adopt signal acquisition device carry out signal acquisition's method to the track slab crack as follows:
firstly, adjusting the positions of an air coupling ultrasonic excitation transducer 4a and an air coupling ultrasonic receiving transducer 4b, and enabling the rail inspection trolley 1 to run along the direction of the track plate 20, during running, firstly enabling the transmitting end of an ultrasonic transmitting and receiving device 15 to transmit an ultrasonic signal, and enabling the air coupling ultrasonic excitation transducer 4a to transmit the ultrasonic signal to the interior of the track plate 20, so that lamb wave signals are generated in the interior of the track plate 20, and moving the position of the air coupling ultrasonic receiving transducer 4b through a three-axis displacement adjusting mechanism (specifically, moving the position of the air coupling ultrasonic receiving transducer 4b in the longitudinal direction by utilizing a longitudinal displacement adjusting mechanism 3), so that the air coupling ultrasonic receiving transducer 4b receives ultrasonic lamb wave echo signals at different positions and transmits the ultrasonic lamb wave echo signals to the receiving end of the ultrasonic transmitting and receiving device 15; then, the position of the air-coupled ultrasonic excitation transducer 4a is moved by the triaxial displacement adjustment mechanism (specifically, the position of the air-coupled ultrasonic excitation transducer 4a is moved in the longitudinal direction by the longitudinal displacement adjustment mechanism 3) to transmit ultrasonic signals to the inside of the track slab 20 at different positions (i.e., lamb wave signals are excited at different positions), and then, the air-coupled ultrasonic receiving transducer 4b is moved to receive ultrasonic lamb wave echo signals at different positions; by repeating the above operations, signal acquisition can be realized at different excitation positions and receiving positions.
Will external signal analysis device 12 of signal acquisition device can be used for the fissured detection of track slab 20, in the time of detecting, with the receiving terminal signal connection in signal analysis device 12 and the ultrasonic transceiver 15, can carry out analysis processes to the lamb wave signal that signal acquisition device gathered through signal analysis device 12 to the realization is to the fissured detection of track slab 20, for example: the signal analysis device 12 performs filtering processing on the received lamb wave echo signal by using commercial signal processing software (for example, MATLAB software), and then obtains an image of the crack of the track slab 20 by using a topological imaging technique (the topological imaging technique is a known technique and is not described here any more), and compares the obtained image with a standard image, thereby determining the defect condition of the crack of the track slab 20.
The utility model discloses a signal acquisition device adopts ultrasonic transceiver to arouse ultrasonic signal to arouse the transducer by air coupling supersound and launch to the track board in, thereby can produce the lamb wave in the track board inside, then rethread air coupling supersound receiving transducer receives lamb wave echo signal, and the lamb wave has advantages such as propagation distance is far away, the decay is little and the propagation range is big compared with traditional ultrasonic wave, makes the utility model discloses a signal acquisition device signal acquisition is easier, quick, high-efficient; in addition, in the signal acquisition process of the signal acquisition device, the positions of the air coupling ultrasonic excitation transducer and the air coupling ultrasonic receiving transducer can be freely adjusted, so that the transmitting and receiving positions of lamb waves can be adjusted, the signal acquisition range is effectively improved, the detection range of the rail inspection trolley is further improved, and the dynamic acquisition of signals is realized; the signal acquisition device can be used for nondestructive detection of the track slab crack, can realize efficient, nondestructive, accurate and real-time detection of the ballastless track crack, can provide timely early warning and powerful guarantee for the safe operation of a high-speed rail, and can provide powerful support for the subsequent track maintenance work; therefore, compared with the prior art, the utility model, have apparent progressive nature and using value.
It is finally necessary to point out here: the above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the protection scope of the present invention.
Claims (10)
1. The utility model provides a signal acquisition device based on ultrasonic lamb wave plate-type ballastless track crack detects, examines the dolly and sets up the ultrasonic emission receiver on examining the dolly, its characterized in that including the rail: still include air coupling ultrasonic transducer and angle adjustment mechanism, air coupling ultrasonic transducer includes that air coupling supersound arouses transducer and air coupling supersound receiving transducer, air coupling supersound arouses transducer and ultrasonic wave transceiver's transmitting terminal signal connection, and air coupling supersound receiving transducer and ultrasonic wave transceiver's receiving terminal signal connection, air coupling supersound arouses transducer and air coupling supersound receiving transducer and all connects on angle adjustment mechanism, angle adjustment mechanism is connected with a triaxial displacement adjustment mechanism, just triaxial displacement adjustment mechanism fixed connection examines the front end of dolly at the rail.
2. The signal acquisition device of claim 1, wherein: be equipped with two angle adjustment mechanism, every angle adjustment mechanism all corresponds and is equipped with rotation motor and connecting piece, it is connected with triaxial displacement adjustment mechanism through the connecting piece to rotate the motor, air coupling supersound arouses transducer and air coupling supersound receiving transducer to connect respectively in the pivot of the rotation motor that corresponds.
3. The signal acquisition device of claim 1, wherein: the three-axis displacement adjusting mechanism comprises a longitudinal displacement adjusting mechanism, a vertical displacement adjusting mechanism and a transverse displacement adjusting mechanism, the angle adjusting mechanism is respectively connected with the corresponding longitudinal displacement adjusting mechanism, the longitudinal displacement adjusting mechanism is respectively connected with the corresponding vertical displacement adjusting mechanism, the vertical displacement adjusting mechanism is connected with the transverse displacement adjusting mechanism, and the transverse displacement adjusting mechanism is fixedly connected to the front end of the rail inspection trolley.
4. The signal acquisition device of claim 3, wherein: the longitudinal displacement adjusting mechanism comprises a longitudinal driving motor, a longitudinal mounting base, a longitudinal screw rod and a longitudinal sliding block, the longitudinal driving motor is fixedly connected to the longitudinal mounting base, one end of the longitudinal screw rod is fixed to the output end of the longitudinal driving motor, the longitudinal sliding block is arranged on the longitudinal screw rod in a sliding mode, and the angle adjusting mechanism is connected with the longitudinal sliding block.
5. The signal acquisition device of claim 4, wherein: and a limit switch is arranged on the longitudinal installation base.
6. The signal acquisition device of claim 4, wherein: vertical displacement adjustment mechanism includes vertical driving motor, vertical extension board, vertical mobile connector and vertical conveying base, vertical mobile connector reciprocates along vertical conveying base under vertical driving motor's drive, vertical extension board is connected with vertical conveying base through vertical mobile connector, longitudinal displacement adjustment mechanism is connected with vertical extension board.
7. The signal acquisition device of claim 4, wherein: the transverse displacement adjusting mechanism comprises a transverse driving motor, a transverse mounting base, a transverse screw rod and a transverse sliding block, the transverse driving motor is fixedly connected to the transverse mounting base, one end of the transverse screw rod is fixed to the output end of the transverse driving motor, the transverse sliding block is slidably arranged on the transverse screw rod, the vertical displacement adjusting mechanism is connected with the transverse sliding block, and the transverse mounting base is fixedly connected to the front end of the rail inspection trolley.
8. The signal acquisition device of claim 1, wherein: the rail inspection trolley comprises a trolley base, a trolley driving motor, a trolley driving wheel and a trolley driven wheel, wherein the trolley driving wheel and the trolley driven wheel are fixed under the trolley base, and the trolley driving motor is fixed on a transmission shaft between the trolley driving wheels.
9. The signal acquisition device of claim 1, wherein: and a mobile power supply is also arranged on the rail inspection trolley.
10. The signal acquisition device of claim 1, wherein: the rail inspection trolley is also provided with a camera.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020514408.1U CN211844442U (en) | 2020-04-09 | 2020-04-09 | Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020514408.1U CN211844442U (en) | 2020-04-09 | 2020-04-09 | Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211844442U true CN211844442U (en) | 2020-11-03 |
Family
ID=73143635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020514408.1U Expired - Fee Related CN211844442U (en) | 2020-04-09 | 2020-04-09 | Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211844442U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581245A (en) * | 2021-08-09 | 2021-11-02 | 上海应用技术大学 | Automatic detection system for track slab hidden diseases |
-
2020
- 2020-04-09 CN CN202020514408.1U patent/CN211844442U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113581245A (en) * | 2021-08-09 | 2021-11-02 | 上海应用技术大学 | Automatic detection system for track slab hidden diseases |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111337574B (en) | Topological imaging method and device based on ultrasonic lamb wave plate type ballastless track cracks | |
| CN206656986U (en) | A kind of new type ultrasonic C-scan inspection car for steel plate detection | |
| CN211844442U (en) | Signal acquisition device based on ultrasonic lamb wave plate type ballastless track crack detection | |
| CN201984056U (en) | Hollow-axle ultrasonic flaw-detecting machine | |
| CN208881811U (en) | A kind of automatic inspection device for track | |
| CN109164174A (en) | A kind of method and device of II plate-type non-fragment orbit off-seam of Dynamic Non-Destruction Measurement CRTS | |
| CN211856387U (en) | Signal acquisition device for detecting cracks of ballastless track slab | |
| CN107092251A (en) | The automatic station-keeping system and method for the unmanned inspection car of railway based on image recognition | |
| CN208682710U (en) | A kind of intelligent measurement vehicle for tunnel lining concrete | |
| CN104142135B (en) | Method and device for monitoring horizontal displacement of tunnel based on wireless tilt sensors | |
| CN208868063U (en) | A kind of device of dynamic detection non-fragment orbit defect | |
| CN219496367U (en) | Rail flaw detection device for railway engineering | |
| CN111257424A (en) | Nondestructive testing equipment for internal cracks of bridge | |
| CN112379004A (en) | A remove loading device for track disease discernment | |
| CN109249955A (en) | A kind of method and device of dynamic detection non-fragment orbit defect | |
| CN208888186U (en) | A kind of device of multichannel Dynamic Non-Destruction Measurement non-fragment orbit defect | |
| CN212674836U (en) | Nondestructive testing equipment for internal cracks of bridge | |
| CN110184909A (en) | Detection vehicle suitable for polymorphic type bridge pier | |
| CN108891336A (en) | A kind of intelligent measurement vehicle and detection method for tunnel lining concrete | |
| CN208999359U (en) | A kind of device of II plate-type non-fragment orbit off-seam of Dynamic Non-Destruction Measurement CRTS | |
| CN114475678A (en) | Based on ultrasonic wave suspension type track robot of detecting a flaw | |
| CN107271559A (en) | A kind of master-slave structure steel rail welding line ultrasonic testing system | |
| CN208962015U (en) | For detecting the visual detection robot of fragment-free track slab | |
| CN217384145U (en) | Automatic measuring device for geometrical parameters of contact net | |
| CN215415215U (en) | Railway track flaw detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201103 |