CN209894757U - Ultrasonic phased array flaw detection device for bridge cable saddle friction plate weld joint - Google Patents
Ultrasonic phased array flaw detection device for bridge cable saddle friction plate weld joint Download PDFInfo
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- CN209894757U CN209894757U CN201920308117.4U CN201920308117U CN209894757U CN 209894757 U CN209894757 U CN 209894757U CN 201920308117 U CN201920308117 U CN 201920308117U CN 209894757 U CN209894757 U CN 209894757U
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Abstract
The utility model relates to a bridge cable saddle friction plate welding seam ultrasonic phased array device of detecting a flaw, the device is including scanning the frame, it is provided with four gyro wheels to scan the frame bottom of looking into, scan the frame rear end along transversely having seted up the spout, be provided with probe frame in the spout, probe frame tip is provided with the phased array probe, it is provided with two sets of off tracking devices to scan the bilateral symmetry on the frame of looking into. The utility model discloses a probe is on a parallel with welding seam lateral shifting, realizes sector scanning, phased array ultrasonic testing time measuring, a plurality of angular surveying of a plurality of wafers can be realized to a probe, and its detection angle scope can be 35 ~ 75 or bigger, and under the control of computer technology, phased array ultrasonic testing has the time delay, dynamic focus, performance such as angle deflection for main acoustic beam can cover whole welding seam detection area (including the heat affected zone), and the imaging technology of phased array makes the testing process directly perceived, and the relevance ratio also improves greatly.
Description
Technical Field
The utility model relates to a bridge cable saddle friction plate welding seam ultrasonic phased array device of detecting a flaw belongs to nondestructive test technical field.
Background
Main cable saddles and cable scattering saddles for large bridges are permanent structural members for supporting main cables of suspension bridges, and cannot be replaced. The cable saddle body is generally formed by casting cast steel, the cable saddle partition plate is assembled and connected with the cable saddle body in a welding mode, the conventional suspension bridge cable saddle partition plates at home and abroad are generally fixedly connected through intermittent and non-fusion welding seams and mainly play a role in separating cable strands, the shearing resistance is weak, the integral friction coefficient of a saddle groove is influenced, and the anti-sliding design and the application of the suspension bridge main cable strands are not facilitated. But the integral friction plate structure also brings the difficulty of weld seam flaw detection.
The design requirement of the suspension bridge cable saddle requires welding a plurality of friction plates (partition plates), the gap between the friction plates is small (generally less than 100mm), and the height of the friction plates is 800-. The common A-type ultrasonic detection needs the probe to scan the welding seam in a zigzag manner from front to back and from left to right, and needs to scan the welding seam in a corner and circle manner after defects are found, and the probe is matched with a plurality of probes with different specifications for use. Due to the limitation of structural detection conditions, the conventional nondestructive detection method cannot ensure the detection precision, reliability or detection efficiency and the like, and blind areas exist in partial areas. For the welding seam of the cable saddle friction plate in the narrow and deep space, obviously, the common A-type ultrasonic detection cannot be implemented because of no operation space, and the existing Rays (RT) and surfaces (MT and PT) cannot be implemented.
The ultrasonic phased array detection technology can realize rapid and accurate nondestructive detection by controlling the focusing and deflection of the sound beam, and the phased array ultrasonic detection has the performances of time delay, dynamic focusing, angle deflection and the like under the control of the computer technology, so that the detection result is more accurate and reliable. Meanwhile, the scanning mode of the phased array ultrasonic detection can be electronic scanning (E scanning) of a zigzag vertical welding line, and can also be sector scanning (S scanning) horizontally dragged by a parallel welding line, C scanning of a cross section and 3D scanning. For the welding seam of the cable saddle friction plate, a sector scanning mode of parallel welding seam transverse movement can be adopted, and the acquired detection data is analyzed by using off-line data analysis software or a data analysis function in a phased array ultrasonic instrument to finish detection. However, no phased array flaw detection device suitable for cable saddle friction plate welding seams exists in the market at present.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome conventional nondestructive test's not enough, provide a bridge cable saddle friction plate welding seam ultrasonic phased array device of detecting a flaw.
The utility model provides a technical scheme that above-mentioned problem adopted does: the utility model provides a bridge cable saddle friction plate welding seam ultrasonic phased array flaw detection device, it is including scanning the frame, it is provided with four gyro wheels to scan the frame bottom, scan the frame rear end along transversely having seted up the spout, be provided with probe frame in the spout, probe frame passes through bolt fixed mounting in the spout, probe frame tip is provided with the phased array probe, it is provided with two sets of off tracking devices to scan the bilateral symmetry on the frame, the off tracking device includes the spring holder, be provided with the spring housing on the spring holder, the spring housing cartridge has the ejector pin, be provided with the spring between ejector pin and the spring housing, the ejector pin outer end is provided with the runner.
Preferably, the front end of the scanning frame is provided with a ranging encoder, and the ranging encoder is in contact with the bottom of the saddle groove.
Preferably, an electric driving device is arranged in front of the scanning frame and comprises a fixing support, the fixing support comprises a left supporting plate and a right supporting plate, the left supporting plate and the right supporting plate are connected through a front connecting rod and a rear connecting rod, a driving motor and a winding shaft are arranged on the fixing support and located on the rear side of the driving motor, the driving motor and the winding shaft are connected through a reduction box, a dragging soft rope is wound on the winding shaft, and the winding shaft is connected with the front end of the scanning frame through the dragging soft rope.
Preferably, a handle rod is arranged between the middle parts of the left support plate and the right support plate and is positioned above the driving motor and the winding shaft.
Preferably, a follow-up coupling water supply device is arranged outside the scanning frame and comprises a pressurized water spraying barrel, a plastic hose is connected to the pressurized water spraying barrel, a water valve is arranged on the plastic hose, and the water outlet end of the plastic hose is fixed to the position of the phased array probe on the probe frame.
Preferably, the scanning frame is transversely provided with a mounting groove, and the spring seat is fixedly connected with the mounting groove through a bolt.
Preferably, the phased array probe adopts a probe of a multi-array element piezoelectric wafer.
Compared with the prior art, the utility model has the advantages of:
1. the utility model discloses a probe is on a parallel with welding seam lateral shifting, realize sector scanning, phased array ultrasonic testing time, a plurality of angle detection of a plurality of wafers can be realized to a probe, for example 16 array elements just are equivalent to simultaneously with 16 probes, its detection angle scope can be 35 ~ 75 or bigger, under the control of computer technology, phased array ultrasonic testing has performances such as delay, dynamic focus, angle deflection, make the main acoustic beam can cover whole welding seam detection area (including the heat affected zone), the imaging technology of phased array makes the testing process directly perceived, the relevance ratio also improves greatly;
2. the utility model has simple structure and convenient operation, adopts an electric driving mode to complete the scanning of the probe moving at uniform speed, and greatly improves the detection efficiency;
3. the utility model discloses a prevent off tracking device can guarantee to scan to look into frame and probe and welding seam parallel and the distance is unchangeable, has effectively guaranteed the welding seam detection effect;
4. the utility model can adjust the position of the probe frame and the spring seat according to the clearance of the friction plate, can meet the detection requirements of different cable saddles, and can always keep compressing half the position of the spring of the deviation preventing device of different cable saddles, the scanning speed can not be changed, and the consistency of the scanning result is effectively ensured;
5. the utility model discloses a water is the couplant, can be convenient for the subsequent anticorrosive application of cable saddle.
Drawings
Fig. 1 is the utility model relates to a bridge cable saddle friction plate welding seam ultrasonic phased array device of detecting a flaw's structural schematic.
Fig. 2 is a schematic structural diagram of the deviation preventing device in fig. 1.
Fig. 3 is a schematic structural diagram of the electric driving device in fig. 1.
Wherein:
Probe holder 3
Rotating wheel 55
Ranging encoder 6
Fixing support 71
Supporting plate 711
Connecting rod 712
Servo coupling water supply device 8
Pressurized water spraying barrel 81
A bolt 10.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments.
As shown in fig. 1 to 3, the ultrasonic phased array flaw detection device for the welding seam of the bridge cable saddle friction plate in the embodiment includes a scanning frame 1, four rollers are arranged at the bottom of the scanning frame 1, a sliding groove 2 is transversely formed at the rear end of the scanning frame 1, a probe frame 3 is arranged in the sliding groove 2, the probe frame 3 is fixedly mounted in the sliding groove 2 through bolts, a phased array probe 4 is arranged at the end of the probe frame 3, the phased array probe 4 is connected with an ultrasonic phased array detector, two sets of deviation prevention devices 5 are symmetrically arranged on the scanning frame 1 in the left-right direction, each deviation prevention device 5 includes a spring seat 51, a spring sleeve 52 is arranged on the spring seat 51, a push rod 53 is inserted into the spring sleeve 52, a spring 54 is arranged between the push rod 53 and the spring sleeve 52, a rotating wheel 55 is arranged at the outer end of the push rod 53, and the rotating wheel at the end of the, when the cable saddle friction plate works, the rotating wheel is contacted with the cable saddle friction plate and can rotate freely;
the front end of the scanning frame 1 is provided with a ranging encoder 6, and the ranging encoder 6 is in contact with the bottom of the saddle groove;
the scanning frame is characterized in that an electric driving device 7 is arranged in front of the scanning frame 1, the electric driving device 7 comprises a fixed support 71, the fixed support 71 comprises a left support plate 711 and a right support plate 711, the left support plate 711 and the right support plate 711 are connected through a front connecting rod 712 and a rear connecting rod 712, a driving motor 72 and a winding shaft 73 are arranged on the fixed support 71, the winding shaft 73 is positioned at the rear side of the driving motor 72, the driving motor 72 is connected with the winding shaft 73 through a reduction gearbox 74, a dragging soft rope 75 is wound on the winding shaft 73, and the winding shaft 73 is connected with the front end of the scanning frame 1 through the dragging soft rope 75;
a handle bar 713 is arranged between the middle parts of the left and right support plates 711, and the handle bar 713 is positioned above the driving motor 72 and the winding shaft 73;
a follow-up coupling water supply device 8 is arranged outside the scanning frame 1, the follow-up coupling water supply device 8 comprises a pressurized water spraying barrel 81, a plastic hose 82 is connected to the pressurized water spraying barrel 81, a water valve 83 is arranged on the plastic hose 82, and the water outlet end of the plastic hose 82 is fixed to the position of the phased array probe 4 on the probe frame 3;
the scanning frame 1 is transversely provided with a mounting groove 9, and the spring seat 51 is fixedly connected with the mounting groove 9 through a bolt 10;
the phased array probe 4 adopts a probe of a multi-array element piezoelectric wafer (such as 16 array elements) with smaller size and shorter front edge of the probe.
The detection method comprises the following steps:
adjusting the position of a probe frame in a chute according to the gap size of a friction plate to be detected, and fixing the probe frame;
adjusting the position of a counting wheel of a distance measuring encoder of the flaw detection device, enabling the counting wheel to be in close contact with the bottom of the saddle groove and to reliably rotate for counting when the scanning frame moves forwards and backwards, and fixing the distance measuring encoder;
adjusting the position of a spring seat of the deviation preventing device according to the gap size of the friction plate to be detected, compressing a spring in each deviation preventing device spring sleeve by half (the spring force of the ejector rod is proper at the moment), and fixing the spring seat at the moment;
placing the flaw detection device into the gap of the friction plate to be detected, enabling four rollers at the bottom of the scanning frame to be in contact with the bottom of the saddle groove, and moving the scanning frame to the position of the starting point of the welding seam;
step five, opening the phased array equipment, opening a coupling water valve, starting a driving motor to pull a scanning frame, and starting flaw detection scanning;
and step six, drawing the scanning frame to the end point position of the welding line to complete the whole flaw detection operation.
In addition to the above embodiments, the present invention also includes other embodiments, and all technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.
Claims (7)
1. The utility model provides a bridge cable saddle friction plate welding seam ultrasonic phased array device of detecting a flaw which characterized in that: the scanning frame comprises a scanning frame (1), four idler wheels are arranged at the bottom of the scanning frame (1), a sliding groove (2) is transversely formed in the rear end of the scanning frame (1), a probe frame (3) is arranged in the sliding groove (2), the probe frame (3) is fixedly installed in the sliding groove (2) through bolts, a phased array probe (4) is arranged at the end of the probe frame (3), two sets of deviation preventing devices (5) are symmetrically arranged on the scanning frame (1) in a left-right mode, each deviation preventing device (5) comprises a spring seat (51), a spring sleeve (52) is arranged on each spring seat (51), an ejector rod (53) is inserted into each spring sleeve (52), a spring (54) is arranged between each ejector rod (53) and each spring sleeve (52), and a rotating wheel (55) is arranged at the outer end of each ejector rod (53).
2. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 1, characterized in that: the front end of the scanning frame (1) is provided with a ranging encoder (6), and the ranging encoder (6) is in contact with the bottom of the saddle groove.
3. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 1, characterized in that: an electric driving device (7) is arranged in front of the scanning frame (1), the electric driving device (7) comprises a fixed support (71), the fixed support (71) comprises a left support plate and a right support plate (711), the left support plate and the right support plate (711) are connected through a front connecting rod and a rear connecting rod (712), a driving motor (72) and a winding shaft (73) are arranged on the fixed support (71), the winding shaft (73) is located on the rear side of the driving motor (72), the driving motor (72) is connected with the winding shaft (73) through a reduction gearbox (74), a dragging soft rope (75) is wound on the winding shaft (73), and the winding shaft (73) is connected with the front end of the scanning frame (1) through the dragging soft rope (75).
4. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 3, characterized in that: a handle rod (713) is arranged between the middle parts of the left and right supporting plates (711), and the handle rod (713) is positioned above the driving motor (72) and the winding shaft (73).
5. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 1, characterized in that: the scanning frame is characterized in that a follow-up coupling water supply device (8) is arranged outside the scanning frame (1), the follow-up coupling water supply device (8) comprises a pressurizing water spraying barrel (81), a plastic hose (82) is connected to the pressurizing water spraying barrel (81), a water valve (83) is arranged on the plastic hose (82), and the water outlet end of the plastic hose (82) is fixed to the position of a phased array probe (4) on the probe frame (3).
6. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 1, characterized in that: the scanning frame (1) is transversely provided with a mounting groove (9), and the spring seat (51) is fixedly connected with the mounting groove (9) through a bolt (10).
7. The ultrasonic phased array flaw detection device for the bridge cable saddle friction plate weld joint according to claim 1, characterized in that: the phased array probe (4) adopts a probe of a multi-array element piezoelectric wafer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920308117.4U CN209894757U (en) | 2019-03-12 | 2019-03-12 | Ultrasonic phased array flaw detection device for bridge cable saddle friction plate weld joint |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920308117.4U CN209894757U (en) | 2019-03-12 | 2019-03-12 | Ultrasonic phased array flaw detection device for bridge cable saddle friction plate weld joint |
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| CN209894757U true CN209894757U (en) | 2020-01-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237957A (en) * | 2021-05-31 | 2021-08-10 | 郑州大学 | Acoustic emission-based parallel steel wire inhaul cable damage space positioning algorithm |
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2019
- 2019-03-12 CN CN201920308117.4U patent/CN209894757U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113237957A (en) * | 2021-05-31 | 2021-08-10 | 郑州大学 | Acoustic emission-based parallel steel wire inhaul cable damage space positioning algorithm |
| CN113237957B (en) * | 2021-05-31 | 2023-09-29 | 郑州大学 | Acoustic emission-based parallel steel wire inhaul cable damage space positioning algorithm |
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