CN116106406A - Scanning device for rapidly detecting bridge deck and U rib of steel bridge - Google Patents

Abstract

The application relates to the technical field of steel structure detection and nondestructive detection, in particular to a scanning device for rapidly detecting a steel bridge deck and U ribs. The scanning device comprises a travelling mechanism, a scanner and a step counting marking mechanism. The scanner comprises a cross rod and a plurality of detection probes, the detection probes are distributed at intervals along the length direction of the cross rod, and the cross rod is arranged on the travelling mechanism; the step counting marking mechanism is positioned on the travelling mechanism, is connected with the scanner and is used for marking the bridge deck of the steel bridge when the detection probe detects that the bridge deck of the steel bridge or the U rib has defects. The invention provides the scanning device for rapidly detecting the bridge deck and the U rib of the steel bridge, so as to solve the problems of complex operation and low efficiency of the detection process of the bridge deck and the U rib of the steel bridge in the related technology.

Description

Scanning device for rapidly detecting bridge deck and U rib of steel bridge

Technical Field

The application relates to the technical field of steel structure detection and nondestructive detection, in particular to a scanning device for rapidly detecting a steel bridge deck and U ribs.

Background

With the acceleration of urban construction and the smooth price of steel, the structural design of large and medium span steel bridges is increasingly applied and built. For the top deck of steel bridges, orthotropic steel bridge deck top decks are generally used. The structure has the outstanding advantages of light weight, strong spanning capability, high overall efficiency, good earthquake resistance and the like. However, orthotropic steel bridge deck roofs and U-ribs are susceptible to fatigue damage and even cracking due to the industry that is difficult to control during design and manufacturing, and the effects of heavy duty vehicles on the deck. For example, as the actual traffic flow far exceeds the designed traffic flow and the traffic overload is serious, the bridge deck top plate of the Yangtze river of the army mountain is repeatedly deformed under the rolling of wheels of a load-carrying vehicle, many top plate cracks are found in 2016 and evaluated as three-level diseases by a professional institution.

In the related art, we often need to periodically detect and monitor the fatigue cracking of in-service orthotropic steel bridge deck boards for a long period of time. The current detection methods include the following: acoustic wave detection, broken line monitoring, video image detection, and the like. The acoustic wave detection includes conventional ultrasonic waves, guided waves and the like, and the crack detection is performed mainly by utilizing the reflection of ultrasonic waves by cracks. The fracture line is attached to the target position, and once the steel plate is cracked, the fracture line is simultaneously torn off, and the cracking of the steel plate can be known through the change of the resistance. The video image is identified by image identification method, and the crack is identified directly from the image.

However, the above-described method is too complicated to operate and the efficiency is to be improved.

Disclosure of Invention

The embodiment of the application provides a scanning device for rapidly detecting a steel bridge deck and a U rib, so as to solve the problems of complex operation and low efficiency of the steel bridge deck and the U rib detection process in the related technology.

In order to achieve the above object, the present invention provides a scanning device for rapidly detecting a bridge deck and a U-rib of a steel bridge, comprising:

a walking mechanism;

the scanner comprises a cross rod and a plurality of detection probes, the detection probes are distributed at intervals along the length direction of the cross rod, and the cross rod is arranged on the travelling mechanism;

the step counting marking mechanism is positioned on the travelling mechanism and connected with the scanner and used for marking the bridge deck of the steel bridge when the detection probe detects that the bridge deck of the steel bridge or the U rib has defects.

In some embodiments, two of the crossbars are horizontally arranged, and one of the crossbars is movably assembled on the other crossbar.

In some embodiments, a plurality of through holes are distributed on one cross rod along the length of the cross rod, at least one through hole is distributed on the other cross rod along the length of the cross rod, and the two cross rods are fixed by a pin shaft through the through holes.

In some embodiments, the cross bar is provided with a through hole perpendicular to the horizontal plane;

the detection probe comprises a detection rod, a height-fixing wheel and a magnetic memory probe, wherein the outer diameter of the detection rod is smaller than that of the through hole, the detection rod penetrates through the through hole, and the height-fixing wheel and the magnetic memory probe are both arranged on the detection rod.

In some embodiments, an accommodating space is formed in the middle of the cross rod, and the through hole penetrates through the accommodating space; the detection rod is provided with a limiting block, and the limiting block is positioned in the accommodating space.

In some embodiments, the running gear includes:

the cross beam is provided with a port for connecting the scanner;

the two inclined beams are connected with the cross beam and form a triangle structure;

the two weight wheels are respectively connected to two ends of the cross beam;

the stabilizing wheel is connected to the joint of the two inclined beams, and the axial directions of the loading wheel and the stabilizing wheel are the same.

In some embodiments, an encoder is provided on the stabilizing wheel, the encoder being coupled to the scanner.

In some embodiments, the step-counting marking mechanism comprises:

the nozzle of the marking device faces the steel bridge deck;

the host is connected with the scanner and the marking device, and is used for receiving detection signals of the detection probes and controlling the marking device to mark when the detection probes detect that the steel bridge deck or the U rib has defects.

In some embodiments, the host computer also pre-stores the coordinates of each detection probe; the host is also used for acquiring a detection probe for detecting the defect of the bridge deck or the U rib of the steel bridge according to the detection signal and the pre-stored coordinates, and adjusting the orientation of the nozzle so as to spray the bridge deck of the steel bridge below the detection probe.

In some embodiments, the host is further provided with a positioning system.

The beneficial effects that technical scheme that this application provided brought include: the scanner is arranged on the travelling mechanism, the scanning of the bridge deck and the U ribs of the steel bridge can be realized on the upper surface of the steel bridge in a traction or manual pushing mode of the working vehicle, meanwhile, the plurality of magnetic memory detection probes cover a detection area with a larger area, the operation is simple, the efficiency is improved, and when the area with the abnormal bridge deck magnetic signal is detected, the step counting marking mechanism can mark the abnormal area, so that the next step of processing is convenient.

The embodiment of the application provides a scanning device for rapidly detecting a steel bridge deck and a U rib, and the bridge deck top plate and the U rib can generate spontaneous magnetization phenomenon and externally represent a tiny magnetic field due to stress concentration and fatigue damage in the bridge deck top plate and the U rib. Such ferromagnetic metals produce spontaneous magnetization in the event of stress concentration and fatigue damage, and are referred to as "magneto-mechanical effects". The invention adopts the metal magnetic memory principle to detect the stress concentration and fatigue damage of the bridge deck top plate. The scanner is placed on the travelling mechanism, so that the heavy and inconvenient carrying by manpower is saved, and the transportation and the preservation of the instrument are facilitated. The scanning device can be hung at the rear of the working vehicle, pulled by the vehicle and driven by the vehicle to advance so as to improve the detection efficiency; under special conditions, the system can also adopt a manual pushing method to carry out scanning detection. The scanning area and the scanning efficiency are improved by the plurality of detection probes, and the step counting marking mechanism can make marks when the scanner scans the magnetic signal abnormal area, so that the follow-up treatment is convenient, and the time and the labor are saved. Therefore, the problems of complex operation and low efficiency of the steel bridge deck and U rib detection process in the related art can be solved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a structural diagram of a scanning device for rapidly detecting a bridge deck and a U-rib of a steel bridge according to an embodiment of the present application;

fig. 2 is a schematic diagram of a linear array of a scanner of a scanning device for rapidly detecting a steel bridge deck and a U-rib according to an embodiment of the present application;

fig. 3 is a front view of a detection probe of a scanning device for rapidly detecting a bridge deck and a U-rib of a steel bridge according to an embodiment of the present application;

fig. 4 is a side view of a detection probe of a scanning device for rapidly detecting a steel bridge deck and a U-rib according to an embodiment of the present application.

In the figure: 1. a scanner; 10. a detection probe; 100. a magnetic memory probe; 101. a limiting block; 102. a height-fixing wheel; 103. a detection rod; 11. a cross bar; 110. an accommodating space; 12. a through hole; 13. a through hole; 2. a walking mechanism; 20. a cross beam; 21. a sloping beam; 22. a loading wheel; 23. a stabilizing wheel; 24. an encoder; 3. a step counting marking mechanism; 30. a host; 31. a marking device.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.

The embodiment of the application provides a scanning device for rapidly detecting a steel bridge deck and a U rib, which can solve the problems that in the related art, the steel bridge deck and the U rib are complex in detection process operation and low in efficiency.

Referring to fig. 1 to 4, the application provides a scanning device for rapidly detecting a bridge deck and a U rib of a steel bridge, which comprises a travelling mechanism 2, a scanner 1 and a step counting marking mechanism 3. The scanner 1 comprises a cross rod 11 and a plurality of detection probes 10, wherein the detection probes 10 are distributed at intervals along the length direction of the cross rod 11, and the cross rod 11 is arranged on the travelling mechanism 2; the step counting marking mechanism 3 is positioned on the travelling mechanism 2, and the step counting marking mechanism 3 is connected with the scanner 1 and is used for marking the bridge deck of the steel bridge when the detecting probe 10 detects that the bridge deck of the steel bridge or the U rib has defects.

In the stress concentration and fatigue damage process of the bridge deck top plate and the U rib, spontaneous magnetization phenomenon can be generated on the bridge deck top plate and the U rib, and the bridge deck top plate and the U rib are externally represented as a tiny magnetic field. Such ferromagnetic metals produce spontaneous magnetization in the event of stress concentration and fatigue damage, and are referred to as "magneto-mechanical effects". This physical phenomenon is also used to evaluate stress concentration and fatigue damage of magnetic metals, and is known as a "metal magnetic memory" detection technique.

The scheme of the invention adopts the metal magnetic memory principle to detect the stress concentration and fatigue damage of the bridge deck top plate. The embodiment of the application provides a scanning device for rapidly detecting a steel bridge deck and a U rib, because the scanner 1 is placed on the travelling mechanism 2, the heavy and inconvenient carrying by manpower is saved, the transportation and the preservation of instruments are facilitated, and the scanning device can be hung at the back of a working vehicle, pulled by the vehicle and driven by the vehicle to advance so as to improve the detection efficiency; under special conditions, the scanning device can also adopt a manual pushing method to carry out scanning detection. The plurality of detection probes 10 improve the scanning area and the scanning efficiency, and the step counting marking mechanism 3 can make marks when the scanner 1 scans the magnetic signal abnormal region, so that the follow-up processing is convenient, the image does not need to be marked manually or re-analyzed, and the time and the labor are saved. Therefore, the problems of complex operation and low efficiency of the steel bridge deck and U rib detection process in the related art can be solved.

Specifically, the scanner 1 may be hung on the travelling mechanism 2 through the cross bar 11, or the scanner 1 may be placed in a groove through providing a groove adapted to the scanner 1 on the travelling mechanism 2. The detection probe 10 can be hung on the cross rod 11 or adhered to the cross rod 11. Preferably, the step-counting marking mechanism 3 is electrically connected to the scanner 1. Preferably, a warning lamp is fixed at the outermost positions of the two ends of the scanner 1 to prompt bridge deck users of other lanes to pay attention to avoiding, so as to prevent traffic accidents.

In some preferred embodiments, two crossbars 11 are provided, two crossbars 11 being arranged horizontally, and one crossbar 11 being movably assembled to the other crossbar 11.

Specifically, in actual detection, lane width changes often occur, typically between 3.75m and 4m, and the two cross bars 11 can be freely combined according to the width of the lane to be scanned, so as to adapt to a narrow lane or a wide lane. Three cross bars 11 or a plurality of cross bars 11 can be arranged, and the coverage of lanes with different widths can be realized.

In some preferred embodiments, see fig. 2, one of the rails 11 has a plurality of through holes 13 along its length, the other rail 11 has at least one through hole 13 along its length, and the two rails 11 are pinned by the through holes 13.

Specifically, the combination of lengths is completed in the case where the two crossbars 11 are opposed through different through holes 13. As shown in fig. 2, one of the cross bars 11 provided with a plurality of through holes 13 may be referred to as a first cross bar, and the other cross bar 11 provided with at least one through hole 13 may be referred to as a second cross bar. When the through hole 13 on the second cross bar is penetrated relative to the first through hole 13 on the first cross bar, the combined length of the two cross bars 11 is longest; when the through hole 13 of the second cross bar is penetrated with respect to the last through hole 13 of the first cross bar, the combined length of the two cross bars 11 is the shortest. It should be noted that, in order to ensure the combination stability of the two crossbars 11, several through holes 13 may be provided thereon. The through hole 13 may be circular, square, or other shapes.

Of course, other connection methods, such as connection and fixation by a slide rail and a clamping groove, may also be adopted. Can set up the pulley on one of them horizontal pole 11, set up assorted spout on another horizontal pole 11 to set up the draw-in groove at suitable node, make things convenient for the fixed of two horizontal poles 11.

In some preferred embodiments, referring to fig. 2 to 4, the cross bar 11 is provided with a through hole 12 perpendicular to the horizontal plane; in addition, the detection probe 10 includes a detection rod 103, a fixed-height wheel 102 and a magnetic memory probe 100, the outer diameter of the detection rod 103 is smaller than that of the through hole 12, the detection rod 103 is arranged through the through hole 12, and the fixed-height wheel 102 and the magnetic memory probe 100 are arranged on the detection rod 103.

Specifically, through holes 12 are formed in the cross bar 11 at regular intervals, for example, at a center-to-center distance of 50mm, and the inner diameter of the through holes 12 is matched with the outer diameter of the detection bar 103 and slightly larger than the outer diameter of the detection bar 103, so that the detection bar 103 can move up and down in the through holes 12. The height-fixing wheel 102 is arranged at one end of the detection rod 103 close to the ground and exceeds the detection rod 103 by a certain distance, so that the distance between the detection rod 103 and the ground can be kept constant in the detection process. The cross-sectional shapes of the through hole 12 and the detection rod 103 on the horizontal plane are the same, and the sizes are slightly different; the cross-sectional shape may be circular, rectangular or polygonal.

In some preferred embodiments, referring to fig. 2, a receiving space 110 is formed in the middle of the cross bar 11, and the through hole 12 penetrates through the receiving space 110; the detection lever 103 is provided with a stopper 101, and the stopper 101 is located in the accommodation space 110.

Specifically, the accommodating space 110 may be rectangular, so that on one hand, the distribution of the detection probes 10 on the cross bar 11 can be clearly seen, and on the other hand, the accommodating space 110 may accommodate the limiting block 101 on the detection rod 103, so that the detection probes 10 are limited while the detection probes 10 move up and down in the through holes 12 conveniently, and when encountering the concave ground or the convex ground, the detection probes are not easy to break away from the through holes 12. It should be noted that, the limiting block 101 may be a square bump or a waist round bar, or may be a bump with an irregular shape, so long as the limiting function described above can be achieved, and the shape of the limiting block is not specifically required.

Preferably, a spring is connected to the lower ends of the accommodating spaces 110 of the limiting block 101 and the cross bar 11, and under the combined action of the spring and the limiting block 101, a fixed distance between the detection probe 10 and the bridge deck, that is, a lift-off value between the detection probe 10 and the bridge deck is ensured.

In some preferred embodiments, referring to fig. 1, the running gear 2 comprises:

a cross beam 20, wherein a port for connecting the scanner 1 is arranged on the cross beam 20;

the two inclined beams 21 are connected with the cross beam 20 and form a triangle structure;

the two weight wheels 22 are respectively connected to two ends of the cross beam 20;

the stabilizing wheel 23, the stabilizing wheel 23 is connected at the joint of the two inclined beams 21, and the loading wheel 22 and the stabilizing wheel 23 have the same axial direction.

Specifically, the beam 20 is provided with a male end, the scanner 1 is provided with a female end, or the beam 20 is provided with a female end, the scanner 1 is provided with a male end, and the male end and the female end are connected and fixed through a port; the cross beam 20 may be provided with a hook, the cross beam 11 of the scanner may be provided with a hanging hole for hooking the hook, or the cross beam 11 of the scanner may be provided with a hook, and the cross beam 20 may be provided with a corresponding hanging hole.

For the whole structure of the travelling mechanism 2, a cross beam 20 and two inclined beams 21 are adopted to form a triangle, and the stability of the triangle is better, and meanwhile, three points determine a surface, so that the travelling mechanism 2 can be basically kept stable while adapting to a bridge deck. Of course, the running gear 2 may also be rectangular in structure, or another running gear.

In some preferred embodiments, the stabilizing wheel 23 is provided with an encoder 24, the encoder 24 being coupled to the scanner 1.

In particular, encoder 24 may employ a high resolution photoelectric encoder. The encoder 24 is used to accurately record the longitudinal distance of the running gear and at the same time trigger the data acquisition of the detection probe 10 on the scanner 1. Encoder 24 is capable of performing accurate forward distance encoding, facilitating the calculation of a variety of parameters.

In some preferred embodiments, the step-counting marking mechanism 3 comprises:

the marking device 31, the nozzle of the marking device 31 faces the steel bridge deck;

and a host computer 30 connected with the scanner 1 and the marking device 31, wherein the host computer 30 is used for receiving the detection signal of the detection probe 10 and controlling the marking device 31 to jet ink when the detection probe 10 detects that the steel bridge deck or the U rib has defects.

Specifically, the marking device 31 has a nozzle that faces the deck and maintains a fixed height and angle relative to the deck. Preferably, the nozzle is located directly in front of the stabilizing wheel 23, i.e. at the centerline position of the scanner 1. In the case where the detection probe 10 detects the abnormality of the magnetic stress signal, the system host 30 controls the marking device 31 to mark the deck by the distance delay when the marking device 31 reaches the longitudinal position of the abnormality of the magnetic stress signal. The mark is favorable for marking special positions such as a starting point, a termination point, a signal abnormal point and the like, and is very favorable for rechecking. Pigments such as inks or paints which have vivid colors and are not easily erased can be used as the marks.

In some preferred embodiments, the host computer 30 also pre-stores the coordinates of each inspection probe 10; the host computer 30 is further configured to obtain, according to the detection signal and the pre-stored coordinates, a detection probe 10 that detects that a defect exists in the bridge deck or the U-rib of the steel bridge, and adjust the orientation of the nozzle to spray the bridge deck of the steel bridge below the detection probe 10.

Specifically, when one or more detection probes 10 on the scanner 1 detect an abnormality, the host computer 30 receives a signal, communicates the coordinates of the detection probe 10 that detected the abnormality to the marking device 31, and the marking device 31 adjusts the ink ejection port to eject ink marks to the abnormal area, ready for review and further processing by the owner.

In some preferred embodiments, a positioning system is also provided on the host 30.

In particular, the positioning system is capable of accurately positioning the real-time position of the scanning device. The positioning system can adopt a Beidou satellite positioning system, other positioning systems or 5G related positioning technologies and systems.

After a lane is scanned, a bridge deck magnetic signal cloud image of the lane can be obtained. And scanning all lanes in sequence to obtain the scanning result of the bridge floor top surface of the whole large bridge pavement. Through analysis of the magnetic cloud image, various useful signals can be obtained, and fatigue damage areas of the bridge deck, even areas where cracks are generated, can be determined. The abnormal region can be conveniently determined by the position (X axis) of the encoder 24 and the position (Y axis) of the detection probe 10, and the mark left by the marking device 31 in the detection process, so that the owner can carry out the next processing.

Unless otherwise specified, the scanning device is entirely made of a non-magnetic material. Meanwhile, the scanning device adopts a detachable design, which is very beneficial to the transportation, assembly and storage of instruments. Under normal conditions, the device can be hung on vehicles such as a car or a pick-up truck or behind a working vehicle, and is pulled by the vehicle to follow the vehicle to advance so as to improve detection efficiency. Under special conditions, the system can also adopt a manual pushing method to carry out scanning detection.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application. Unless specifically stated or limited otherwise, the terms "mounted," "connected," and "coupled" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.

It should be noted that in this application, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is merely a specific embodiment of the application to enable one skilled in the art to understand or practice the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (10)

1. Scanning device for rapidly detecting steel bridge deck and U rib, which is characterized in that it comprises:

a travelling mechanism (2);

the scanner (1), the scanner (1) comprises a cross rod (11) and a plurality of detection probes (10), the detection probes (10) are distributed at intervals along the length direction of the cross rod (11), and the cross rod (11) is arranged on the travelling mechanism (2);

the step counting marking mechanism (3) is positioned on the travelling mechanism (2), the step counting marking mechanism (3) is connected with the scanner (1) and is used for marking the bridge deck of the steel bridge when the detection probe (10) detects that the bridge deck of the steel bridge or the U rib has defects.

2. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 1, wherein: the two cross bars (11) are horizontally arranged, and one cross bar (11) is movably assembled on the other cross bar (11).

3. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 1, wherein: one of the cross bars (11) is provided with a plurality of through holes (13) along the length thereof, the other cross bar (11) is provided with at least one through hole (13) along the length thereof, and the two cross bars (11) are fixed by pin shafts through the through holes (13).

4. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 1, wherein:

the cross rod (11) is provided with a through hole (12) perpendicular to the horizontal plane;

the detection probe (10) comprises a detection rod (103), a height-fixing wheel (102) and a magnetic memory probe (100), wherein the outer diameter of the detection rod (103) is smaller than that of the through hole (12), the detection rod (103) is arranged in the through hole (12) in a penetrating mode, and the height-fixing wheel (102) and the magnetic memory probe (100) are arranged on the detection rod (103).

5. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 4, wherein:

an accommodating space (110) is formed in the middle of the cross rod (11), and the through hole (12) penetrates through the accommodating space (110);

the detection rod (103) is provided with a limiting block (101), and the limiting block (101) is positioned in the accommodating space (110).

6. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 1, wherein: the travelling mechanism (2) comprises:

a cross beam (20), wherein a port for connecting the scanner (1) is arranged on the cross beam (20);

the two oblique beams (21), the two oblique beams (21) are connected with the cross beam (20) and form a triangle structure;

the two loading wheels (22) are respectively connected to two ends of the cross beam (20);

the stabilizing wheel (23), the stabilizing wheel (23) is connected at the joint of the two oblique beams (21), and the loading wheel (22) and the stabilizing wheel (23) have the same axial direction.

7. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 6, wherein: an encoder (24) is arranged on the stabilizing wheel (23), and the encoder (24) is connected with the scanner (1).

8. Scanning device for rapid detection of steel bridge decks and U-ribs according to claim 1, characterized in that the step counting marking mechanism (3) comprises:

a marking device (31), wherein the nozzle of the marking device (31) faces the bridge deck of the steel bridge;

the host computer (30) is connected with the scanner (1) and the marking device (31), and the host computer (30) is used for receiving a detection signal of the detection probe (10) and controlling the marking device (31) to mark when the detection probe (10) detects that the steel bridge deck or the U rib has defects.

9. A scanning device for rapidly detecting steel bridge decks and U-ribs according to claim 8,

the host (30) also pre-stores the coordinates of each detection probe (10);

the host machine (30) is also used for acquiring a detection probe (10) for detecting the defect of the steel bridge deck or the U rib according to the detection signal and the pre-stored coordinates, and adjusting the orientation of the nozzle so as to spray the steel bridge deck below the detection probe (10).

10. A scanning device for rapidly detecting steel bridge decks and U-ribs as in claim 8, wherein: the host (30) is also provided with a positioning system.

Images