Flaw detection device for bridge steel structure

Abstract

The utility model discloses a flaw detection device for a bridge steel structure, which comprises a telescopic rod and an ultrasonic probe, a fixed frame is arranged at the upper end of the telescopic rod, and a liquid storage box and a U-shaped frame are movably arranged at the upper end of the fixed frame; a smearing block is arranged at the upper end of the liquid storage box, a coupling agent is arranged in the liquid storage box, the ultrasonic probe is fixed to the inner side of the U-shaped frame, and a detection face is arranged outside the ultrasonic probe; and the liquid storage box and the U-shaped frame are driven to rotate through two groups of rotating mechanisms. According to the position of a detection area, the angle of the liquid storage box is adjusted through the rotating mechanism, and since a coupling agent is stored in the liquid storage box, the coupling agent is smeared to the detection area through the smearing block, so that the coupling agent can be uniformly smeared to the detection area; after the coupling agent is smeared, the ultrasonic probe is adjusted through the rotating mechanism, and then a detection surface on the surface of the ultrasonic probe is in contact with a to-be-detected surface and detects flaws of the to-be-detected surface.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge steel structure detection, in particular to a flaw detection device for bridge steel structures. Background Technique

[0002] When the steel structure of a bridge encounters external forces, cracks may occur inside. Therefore, a flaw detector is needed for flaw detection work, especially at welded positions. Currently, ultrasonic flaw detection is mostly used for flaw detection of steel structures. Before detecting the steel structure, a coupling agent needs to be applied to the detection surface. The coupling agent is a medium in an ultrasonic imaging device or system. Its main function is to help ultrasonic waves pass through an object and form an image, while excluding the air between the probe and the object to be measured, so as to ensure that ultrasonic waves can effectively penetrate the object and achieve the detection purpose.

[0003] In the Chinese utility model patent with the publication number CN 217766231 U, a flaw detection device for bridge steel structures is disclosed, which includes a lifting platform, rollers, casters, a pedestal, a guardrail, and a flaw detector placement box. Roller and caster are respectively installed at both ends of the bottom of the lifting platform. A pedestal is arranged above the lifting platform. A guardrail is arranged on the top of the pedestal. There is a flaw detector placement box outside the lifting platform, and an ultrasonic flaw detector and an ultrasonic generating head are placed inside the flaw detector placement box. The utility model fixes the ultrasonic generating head of the ultrasonic flaw detector conveniently through the cooperation of a handle, a movable groove, a movable rod, a connecting rod, a threaded connection groove, a magnetic adsorption fixing head, and a threaded rod, and moves the ultrasonic generating head to a high position of the bridge by holding the handle, and uses the ultrasonic generating head to emit ultrasonic waves to detect the inside of the bridge steel structure, improving the convenience and safety of the detection work. For the above related technology, the inventor believes that there are the following defects: When detecting the detection area by holding the handle, the angle of the ultrasonic probe cannot be adjusted according to the position of the surface to be detected. If the surface to be detected is an inclined surface, it is very difficult to detect by the above related technology. In addition, it is also inconvenient to apply the coupling agent to the surface to be detected by the above related technology, affecting the detection data and detection efficiency. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flaw detection device for bridge steel structures to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A flaw detection device for bridge steel structures, including a telescopic rod and an ultrasonic probe. A fixed frame is arranged at the upper end of the telescopic rod, and a liquid storage box and a U-shaped frame are movably arranged at the upper end of the fixed frame;

[0006] The upper end of the liquid storage box is provided with a smearing block, and the inside of the liquid storage box is provided with a coupling agent. The ultrasonic probe is fixed inside the U-shaped frame, and a detection surface is arranged outside the ultrasonic probe.

[0007] The liquid storage box and the U-shaped frame are driven to rotate by two sets of rotating mechanisms. The rotating mechanism includes a rotating frame arranged inside the fixed frame. Rotating shafts are arranged on both sides of the rotating frame, and the rotating shafts are rotatably installed on the fixed frame.

[0008] A large gear is arranged on one of the rotating shafts, and the large gear is located outside the fixed frame. The large gear is meshed and connected with a small gear, and the small gear is driven to rotate by a motor.

[0009] Preferably, one side of the U-shaped frame is installed with a threaded rod through threads. One end of the threaded rod is provided with a pressing plate. The pressing plate is located inside the U-shaped frame. A rubber pad is arranged on the end surface of the pressing plate. The rubber pad abuts against the ultrasonic probe, and a knob is arranged on the other end of the threaded rod.

[0010] Preferably, the upper end of the liquid storage box is provided with a sealing cover with a detachable structure. An inner plate is arranged at the lower end of the sealing cover, and the inner plate abuts against the inner wall of the liquid storage box. Sealing strips are arranged around the inner plate.

[0011] Preferably, the smearing block is located at the upper end of the sealing cover, and the smearing block extends into the liquid storage box and is connected with the coupling agent.

[0012] Preferably, the bottoms of the liquid storage box and the U-shaped frame are respectively fixedly connected to the upper end of the rotating frame.

[0013] Preferably, the two sets of rotating mechanisms are respectively arranged on both sides of the fixed frame.

[0014] Preferably, the smearing block is of an overall porous structure, and the material is an elastic material.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] According to the position of the detection area, the present utility model adjusts the angle of the liquid storage box through the rotating mechanism. Since the coupling agent is stored in the liquid storage box, it is smeared to the detection area through the smearing block, so that the coupling agent can be evenly smeared on the detection area. After the coupling agent is smeared, the ultrasonic probe is adjusted through the rotating mechanism, and then the detection surface on the surface of the ultrasonic probe contacts the surface to be detected and flaw detection is carried out on the surface to be detected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a front view of the present utility model;

[0019] Figure 3 This is the right view of the present utility model;

[0020] Figure 4 This is the left view of the present utility model;

[0021] Figure 5 This is the detailed enlarged view at position A in the left view of the present utility model;

[0022] Figure 6 This is the top view of the present utility model.

[0023] In the figure: 1, telescopic rod; 2, ultrasonic probe; 3, fixing frame; 4, liquid storage box; 5, smearing block; 6, sealing cover; 7, inner plate; 8, sealing strip; 9, U-shaped frame; 10, threaded rod; 11, pressing plate; 12, rubber pad; 13, knob; 14, rotating frame; 15, rotating shaft; 16, large gear; 17, small gear; 18, motor; 19, detection surface. Specific embodiments

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0025] Please refer to Figures 1-6 , the present utility model provides a technical solution: a flaw detection device for bridge steel structures, including a telescopic rod 1 and an ultrasonic probe 2. A fixing frame 3 is provided at the upper end of the telescopic rod 1, and a liquid storage box 4 and a U-shaped frame 9 are movably provided at the upper end of the fixing frame 3;

[0026] A smearing block 5 is provided at the upper end of the liquid storage box 4, and a coupling agent is provided inside the liquid storage box 4. The ultrasonic probe 2 is fixed inside the U-shaped frame 9, and a detection surface 19 is provided outside the ultrasonic probe 2;

[0027] Among them, the telescopic rod 1 can be shortened and extended. When flaw detecting high positions, it is necessary to extend the telescopic rod 1 so that the ultrasonic probe 2 can contact the part to be flaw detected. The ultrasonic probe 2 is used to detect the bridge steel structure and transmit the detection information to the display host;

[0028] Before detecting a steel structure, it is necessary to apply a coupling agent to the detection surface. The coupling agent is a medium used in an ultrasonic imaging device or system. Its main function is to help ultrasonic waves pass through an object and form an image, while excluding the air between the probe and the object to be measured, so as to ensure that the ultrasonic waves can effectively penetrate the object and achieve the detection purpose. Therefore, the coupling agent is stored in the liquid storage box 4. Before the ultrasonic probe 2 detects, it is applied to the detection area through the application block 5, so that the coupling agent can be evenly applied to the detection area.

[0029] The liquid storage box 4 and the U-shaped frame 9 are driven to rotate by two sets of rotating mechanisms, and the two sets of rotating mechanisms are respectively arranged on both sides of the fixed frame 3;

[0030] The rotating mechanism includes a rotating frame 14 arranged inside the fixed frame 3. The bottoms of the liquid storage box 4 and the U-shaped frame 9 are respectively fixedly connected to the upper end of the rotating frame 14. Both sides of the rotating frame 14 are provided with rotating shafts 15, and the rotating shafts 15 are rotatably installed on the fixed frame 3;

[0031] A large gear 16 is provided on one of the rotating shafts 15, and the large gear 16 is located outside the fixed frame 3. The large gear 16 is meshed with a small gear 17, and the small gear 17 is driven to rotate by a motor 18.

[0032] During use, according to the position of the detection area, the angles of the liquid storage box 4 and the ultrasonic probe 2 are adjusted through the rotating mechanism. The motor 18 drives the small gear 17 to rotate, the small gear 17 drives the large gear 16 to rotate, the large gear 16 drives the rotating frame 14 to rotate through the rotating shaft 15, and the rotating frame 14 drives the liquid storage box 4 to rotate and adjust the angle of the liquid storage box 4, so that the upper end surface of the application block 5 can fit the surface to be detected. Then, the coupling agent is applied to the surface to be detected through the application block 5. After the application is completed, the ultrasonic probe 2 is switched, the ultrasonic probe 2 is adjusted through the rotating mechanism, and then the detection surface 19 on the surface of the ultrasonic probe 2 contacts the surface to be detected and performs flaw detection on the surface to be detected.

[0033] One side of the U-shaped frame 9 is installed with a threaded rod 10 through a thread. One end of the threaded rod 10 is provided with a pressing plate 11. The pressing plate 11 is located inside the U-shaped frame 9. The end surface of the pressing plate 11 is provided with a rubber pad 12, and the rubber pad 12 abuts against the ultrasonic probe 2. The other end of the threaded rod 10 is provided with a knob 13.

[0034] Among them, the U-shaped frame 9 is used to fix the ultrasonic probe 2. When fixing the ultrasonic probe 2, place the ultrasonic probe 2 inside the U-shaped frame 9 and make one side of the ultrasonic probe 2 fit the inner wall of the U-shaped frame 9. Then rotate the knob 13, so that the pressing plate 11 slowly approaches the ultrasonic probe 2 and finally presses and fixes the ultrasonic probe 2. The rubber pad 12 is provided to protect the surface of the ultrasonic probe 2 and increase the friction force, so that the ultrasonic probe 2 can be stably fixed.

[0035] The upper end of the liquid storage box 4 is provided with a sealing cover 6 having a detachable structure. The lower end of the sealing cover 6 is provided with an inner plate 7, and the inner plate 7 abuts against the inner wall of the liquid storage box 4. A sealing strip 8 is provided around the inner plate 7;

[0036] The smearing block 5 is located at the upper end of the sealing cover 6, and the smearing block 5 extends into the liquid storage box 4 and is connected to the coupling agent;

[0037] The smearing block 5 is integrally of a porous structure, and the material is an elastic material.

[0038] Among them, the sealing cover 6 can be detached, which is convenient for adding the coupling agent into the liquid storage box 4 and also convenient for cleaning the inside of the liquid storage box 4. Through the sealing strip 8, the liquid storage box 4 can be well sealed. Since the smearing block 5 is integrally of a porous structure and the material is an elastic material, the coupling agent can be smeared onto the surface to be detected through the smearing block 5.

[0039] The working principle and usage process of the present utility model:

[0040] When in use, according to the position of the detection area, the angles of the liquid storage box 4 and the ultrasonic probe 2 are adjusted through the rotating mechanism. The motor 18 drives the small gear 17 to rotate, the small gear 17 drives the large gear 16 to rotate, the large gear 16 drives the rotating frame 14 to rotate through the rotating shaft 15, the rotating frame 14 drives the liquid storage box 4 to rotate and adjusts the angle of the liquid storage box 4, so that the upper end surface of the smearing block 5 can fit the surface to be detected. Then, the coupling agent is smeared onto the surface to be detected through the smearing block 5. After the smearing is completed, the ultrasonic probe 2 is switched, the ultrasonic probe 2 is adjusted through the rotating mechanism, and then the detection surface 19 on the surface of the ultrasonic probe 2 contacts the surface to be detected and performs flaw detection on the surface to be detected.

[0041] Although the embodiments of the present utility model have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A flaw detection device for bridge steel structures, comprising a telescopic rod (1) and an ultrasonic probe (2), characterized in that: The upper end of the telescopic rod (1) is provided with a fixed frame (3), and the upper end of the fixed frame (3) is movably provided with a liquid storage box (4) and a U-shaped frame (9); The upper end of the liquid storage box (4) is provided with an application block (5), and a coupling agent is provided inside the liquid storage box (4). The ultrasonic probe (2) is fixed inside the U-shaped frame (9), and a detection surface (19) is provided outside the ultrasonic probe (2); The liquid storage box (4) and the U-shaped frame (9) are driven to rotate by two groups of rotating mechanisms. The rotating mechanism includes a rotating frame (14) arranged inside the fixed frame (3). Rotating shafts (15) are provided on both sides of the rotating frame (14), and the rotating shafts (15) are rotatably installed on the fixed frame (3); A large gear (16) is provided on one of the rotating shafts (15), and the large gear (16) is located outside the fixed frame (3). The large gear (16) is meshed with a small gear (17), and the small gear (17) is driven to rotate by a motor (18).

2. The flaw detection device for bridge steel structures according to claim 1, characterized in that: One side of the U-shaped frame (9) is threadedly installed with a threaded rod (10). One end of the threaded rod (10) is provided with a pressing plate (11). The pressing plate (11) is located inside the U-shaped frame (9). A rubber pad (12) is provided on the end face of the pressing plate (11). The rubber pad (12) abuts against the ultrasonic probe (2), and a knob (13) is provided at the other end of the threaded rod (10).

3. The flaw detection device for bridge steel structures according to claim 1, wherein: The upper end of the liquid storage box (4) is provided with a sealing cover (6) with a detachable structure. An inner plate (7) is provided at the lower end of the sealing cover (6), and the inner plate (7) abuts against the inner wall of the liquid storage box (4). Sealing strips (8) are provided around the inner plate (7).

4. The flaw detection device for bridge steel structures according to claim 3, characterized in that: The application block (5) is located on the upper end of the sealing cover (6), and the application block (5) extends into the liquid storage box (4) and is connected to the coupling agent.

5. A flaw detection device for bridge steel structures according to claim 1, characterized in that: The bottoms of the liquid storage box (4) and the U-shaped frame (9) are respectively fixedly connected to the upper end of the rotating frame (14).

6. The flaw detection device for bridge steel structures according to claim 1, characterized in that: The two groups of rotating mechanisms are respectively arranged on both sides of the fixed frame (3).

7. The flaw detection device for bridge steel structures according to claim 1, characterized in that: The application block (5) is of an overall porous structure, and the material is an elastic material.

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