A kind of welded joint detection device of stiff steel column

Abstract

The application discloses a kind of stiff steel bone column weld detection device, and it relates to the technical field of weld detection device.A kind of stiff steel bone column weld detection device, comprising: two ends are respectively connected with the mounting bracket of fixed rod, the fixed rod is symmetrically arranged on mounting bracket, the mounting bracket is connected on H-shaped steel;Sliding bracket is slidably connected on the fixed rod, and forms weld activity detection area between two mounting brackets;The present application can not only realize ultrasonic probe automatic wave path to swing horizontally by setting wave guide rail, but also can improve the effect of weld detection for H-shaped steel, and the automatic spraying of coupling agent can be realized by the design of wave guide rail, and the uniform coating effect of coupling agent in wave path can be realized by the combination of wave guide rail and L-shaped scraper.Moreover, the setting of wave guide rail can automatically judge whether the wing plate is bent after welding during the process of fillet weld detection, thereby improving the welding quality of H-shaped steel.

Description

Technical Field

[0001] This invention belongs to the technical field of weld inspection devices, specifically, it relates to a weld inspection device for rigid steel columns. Background Technology

[0002] In the field of reinforced steel column engineering, fillet welds, as the core connecting structure of reinforced steel columns such as H-beams and cross-beams, directly determine the load-bearing capacity and safety durability of the overall structure. Defects such as cracks, lack of fusion, and incomplete penetration within fillet welds can lead to interruption of load transfer, causing structural deformation or even collapse accidents. Therefore, quality control through ultrasonic testing technology is necessary.

[0003] Currently, ultrasonic testing of fillet welds mainly relies on manual handheld probe operation, using a transverse zigzag path to achieve full coverage scanning of the weld and heat-affected zone. However, existing manual inspection methods have significant technical drawbacks:

[0004] First, the dimensional accuracy of the transverse sawtooth path is difficult to control. During manual operation, the transverse swing amplitude of the probe depends entirely on the experience of the inspector. It is easy for hand tremors or judgment errors to cause insufficient or excessive swing range, resulting in missed detection of weld edges and heat-affected zones, or excessive path overlap to reduce inspection efficiency and make it difficult to ensure inspection consistency.

[0005] Secondly, there is a serious problem of operator fatigue when inspecting long welds. In large steel structure projects such as bridges and high-rise buildings, the length of fillet welds often reaches several meters or even tens of meters. Manually holding the probe requires maintaining stable lateral swing and longitudinal advance movements. Prolonged operation can easily lead to hand muscle fatigue, causing problems such as probe trajectory deviation and unstable coupling pressure, which directly affect the quality of defect signal acquisition and increase the risk of missed detection.

[0006] Furthermore, due to the unique structure of H-beams, the fillet welds on both sides cannot be inspected simultaneously. H-beams consist of symmetrical fillet welds formed by the web and upper and lower flanges. During manual inspection, each side of the weld must be scanned separately, resulting in low inspection efficiency. Moreover, the inspection parameters on both sides, such as gain and probe angle, are prone to deviation due to differences in operator skill, making comparative analysis of the weld quality difficult. Simultaneously, the limited operating space formed by the flanges and web restricts the probe's range of motion, further exacerbating the inspection difficulty.

[0007] In summary, existing manual ultrasonic testing methods for fillet welds have significant shortcomings in terms of path control accuracy, operational fatigue, structural adaptability, and result consistency. There is an urgent need to develop a weld testing technology for stiff steel columns that can overcome these defects in order to improve the reliability, efficiency, and standardization of fillet weld testing. Summary of the Invention

[0008] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a rigid steel column weld inspection device that can overcome or at least partially solve the above problems.

[0009] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: a weld inspection device for rigid steel columns, comprising: fixed rods with mounting frames connected to both ends, the fixed rods being symmetrically arranged on the mounting frames, the mounting frames being connected to H-beams; a slide frame slidably connected to the fixed rods, forming a weld inspection area between the two mounting frames; mounting arms symmetrically arranged on the slide frame via torsion springs, with ultrasonic probes respectively mounted on the two mounting arms; an adjustment assembly connected to the slide frame for adjusting the lateral and vertical distance of the mounting arms on the slide frame; and a wave guide rail symmetrically connected between the two mounting frames, with one end of the ultrasonic probe contacting the wave guide rail. When the slide frame moves longitudinally on the fixed rods, the mounting arms and the wave guide rail cooperate to swing laterally along a wave path.

[0010] Preferably, the mounting frame includes a rectangular frame and hanging brackets symmetrically arranged on both sides of the rectangular frame. The hanging brackets position the mounting frame on the flanges of the H-beam. A screw is symmetrically threaded onto the rectangular frame to fix the rectangular frame between the two flanges.

[0011] Preferably, the carriage includes arms respectively mounted on both sides of two mounting plates, the arms being slidably connected to two fixed rods.

[0012] Preferably, the adjustment assembly includes a bidirectional screw and a second screw. Slide grooves are symmetrically provided on both mounting plates, and rectangular tubes are slidably connected in both slide grooves. The bidirectional screw is rotatably connected to one of the rectangular tubes, and a guide rod is fixedly connected to the other rectangular tube. The second screw is threadedly connected to the mounting plate, and the end of the second screw is rotatably connected to a connecting plate between the two rectangular tubes.

[0013] Preferably, connecting arms are slidably connected to the guide rods on both sides of the second screw. The connecting arms are threadedly connected to the adjacent bidirectional screws. A connecting rod is symmetrically fixed to one end of the connecting arm. Two support arms are slidably connected to the symmetrical connecting rods. A spring is connected between the two support arms and the connecting arms. The mounting arm is rotatably connected to the support arm of the two support arms through a connecting shaft. The torsion spring is sleeved on the connecting shaft.

[0014] Preferably, it also includes a coupling agent spraying assembly installed on the double arms. When the ultrasonic probe moves longitudinally along a wave path, the coupling agent spraying assembly sprays coupling agent onto the web of the H-beam in the direction of carriage travel.

[0015] Preferably, the coupling agent spraying assembly includes a sealing cylinder mounted on the second support arm of the double support arm. A piston rod with a piston at one end is slidably connected in the sealing cylinder. A spring is provided between the piston of the piston rod and the sealing cylinder. A suction pipe and a discharge pipe are fixedly connected to the sealing cylinder. One end of the suction pipe is connected to the coupling agent storage box, and the spraying end of the discharge pipe is located on one side of the mounting arm.

[0016] Preferably, an L-shaped scraper is installed on the spray end of the drain pipe, the bent section of the L-shaped scraper is inclined away from the ultrasonic probe, and a groove is opened on the bottom surface of the L-shaped scraper.

[0017] Furthermore, it also includes square rods symmetrically installed between two mounting brackets, with the wave guide rail mounted on the square rods. Multiple pressure sensors are evenly spaced on the side of the square rods near the wing plate. A guide wheel is rotatably connected to the end of the piston rod away from the sealing cylinder, and the guide wheel is adapted to the wave guide rail. When the slide moves longitudinally on the fixed rod and drives the mounting arm to swing laterally, the guide wheel rolls along the wave surface of the wave guide rail and applies a periodic thrust toward the wing plate to the square rod. The pressure sensor monitors the change in value to detect whether the wing plate is deformed.

[0018] Furthermore, the steps for monitoring whether the winglet is deformed using the pressure sensor are as follows:

[0019] S1. Establishing the reference state: After the device is installed, adjust the pressure sensor on the square rod to fit against the surface of the wing plate, and record and store the initial pressure reference value F0 of the pressure sensor in the no-thrust state through the data acquisition system.

[0020] S2. Dynamic pressure capture: When the carriage moves longitudinally on the fixed rod, the guide wheel reciprocates along the wave path of the wave guide rail and generates a periodic thrust toward the wing plate on the wave guide rail and the square rod. The pressure sensor collects the pressure value change between itself and the wing plate in real time and transmits it to the monitoring system.

[0021] S3. Deformation Judgment: If the real-time pressure value F(t) satisfies F 低限 ≤F(t)≤F 高限 Furthermore, the fluctuation amplitude ΔF(t) and the undulation amplitude H of the wave guide are related. 波幅 If they are positively correlated, then the airfoil is judged to have no obvious deformation; if F(t) > F 高限 +ΔF 临界 And the rate of pressure change dF(t) / dt > v 增速 If the initial state F(t) = 0 or F(t) after contact, then it is determined that the airfoil exhibits inward bending deformation; <F 低限 -ΔF 临界 And ΔF(t) < δ 波动If ΔF is the winglet, then it is determined that the winglet exhibits outward bending deformation; where ΔF 临界 As a preset pressure threshold, v 增速 δ is the threshold for the minimum rate of pressure rise. 波动 This is the minimum pressure fluctuation threshold.

[0022] S4. Positioning Record: Combining the equidistant arrangement of pressure sensors on the square rod and the longitudinal movement information of the carriage, determine the specific location of the wing plate deformation.

[0023] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0024] 1. This rigid steel column weld inspection device, through the mechanical cooperation of the wave guide rail and the guide wheel, allows the wave path swing amplitude of the ultrasonic probe to be precisely controlled by the structural parameters of the wave guide rail, replacing the experience-based reliance on manual hand operation and avoiding missed detections or low efficiency due to insufficient or excessive swing range.

[0025] 2. This rigid steel column weld inspection device achieves longitudinal advancement through the sliding cooperation of the slide and the fixed rod. The wave path oscillation is automatically completed by the mechanical structure, eliminating the need for continuous manual application of force to achieve lateral oscillation. This solves the fatigue problem caused by repeated hand movements to change the monitoring position of the ultrasonic probe during long weld inspection.

[0026] 3. The rigid steel column weld inspection device has symmetrically arranged mounting arms that can simultaneously align with the fillet welds on both sides of the H-beam. Only one person can inspect the welds on both sides at the same time. Furthermore, the distance between the ultrasonic probes on both sides can be adjusted synchronously by the adjustment component to ensure consistent inspection conditions, thus solving the parameter deviation problem when manually inspecting alone, and eliminating the need for repeated positioning.

[0027] 4. This rigid steel column weld inspection device can monitor the deformation of the flange in real time through pressure sensors while inspecting the weld, realizing the integrated detection of "weld quality + structural deformation", avoiding the problem of secondary stress concentration caused by flange deformation, and improving the comprehensiveness of structural safety assessment.

[0028] 5. This rigid steel column weld inspection device, by setting a wave guide rail, not only enables the ultrasonic probe to automatically swing laterally along a wave path, improving the weld inspection effect for H-beams, but also enables automatic spraying of coupling agent through the design of the wave guide rail. Furthermore, by combining the wave guide rail with an L-shaped scraper, it achieves a uniform coating effect of coupling agent along the wave path. At the same time, the wave guide rail can also automatically determine whether the flange has bent or deformed after welding during the inspection of fillet welds, thereby improving the welding quality of H-beams.

[0029] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0030] In the attached diagram:

[0031] Figure 1 This is a three-dimensional structural schematic diagram of a weld inspection device for stiffened steel columns proposed in this invention;

[0032] Figure 2 This is a schematic diagram of the structure of an H-beam for a weld seam detection device for a stiffened steel column proposed in this invention;

[0033] Figure 3 This is a schematic diagram of the fixing rod and square rod of the weld inspection device for stiff steel column proposed in this invention;

[0034] Figure 4 This is a top view of a weld inspection device for stiffened steel columns proposed in this invention;

[0035] Figure 5 This is a schematic diagram of the wave guide rail of a weld seam detection device for stiff steel columns proposed in this invention;

[0036] Figure 6 This invention proposes a device for detecting weld seams in rigid steel columns. Figure 5 Enlarged view of point A in the middle;

[0037] Figure 7 This is a schematic diagram of the rectangular frame, hanger, and screw of a rigid steel column weld inspection device proposed in this invention.

[0038] Figure 8 This is a schematic diagram of the square rod and pressure sensor of the weld detection device for stiff steel column proposed in this invention;

[0039] Figure 9 This is a schematic diagram of the mounting plate, slide, and rectangular tube of the weld inspection device for stiff steel columns proposed in this invention.

[0040] Figure 10 This is a schematic diagram of the slide, connecting arm, double support arm, and L-shaped scraper of the rigid steel column weld inspection device proposed in this invention.

[0041] Figure 11 This is a schematic diagram of the structure of the L-shaped scraper, bending section, and shaking zone of the weld inspection device for stiff steel column proposed in this invention.

[0042] In the diagram: 1. Mounting bracket; 11. Rectangular frame; 12. Hanger; 13. Screw 1; 14. Sleeve;

[0043] 2. Fixing rod;

[0044] 3. Carriage; 31. Boom; 32. Mounting plate; 321. Slide groove;

[0045] 33. Rectangular tube; 331. Screw 2;

[0046] 34. Double-acting screw; 341. Guide rod; 342. Connecting arm; 343. Connecting rod; 344. Spring 1;

[0047] 35. Double support arm; 351. Support arm one; 352. Support arm two; 353. Mounting arm; 354. Locking rod; 355. Ultrasonic probe; 356. Connecting shaft; 357. Torsion spring;

[0048] 4. Sealing cylinder; 41. Guide wheel; 42. Piston rod; 43. Spring II; 44. Suction pipe; 45. Drain pipe; 46. L-shaped scraper; 461. Groove; 462. Bending section;

[0049] 5. Square rod; 51. Wave guide rail; 52. Pressure sensor; 53. Waist-shaped adjustment groove;

[0050] 6. H-beam; 61. Web; 62. Flange;

[0051] 7. Shaking area. Detailed Implementation

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0053] The following is in conjunction with the appendix Figure 1 -Appendix Figure 11 The technical solutions provided in the various embodiments of the present invention will be described in detail.

[0054] Example: Refer to Figures 1-11This device is mainly used for inspecting the fillet welds of H-beams 6 in rigid steel columns. The H-beam 6 consists of a web 61 and two flanges 62 on both sides, with the fillet welds located at the connection between the web 61 and the flanges 62. During assembly, the two mounting brackets 1 are first hung on the flanges 62 of the H-beam 6 via hangers 12. The screw 13 on the rectangular frame 11 is then rotated until its end abuts against the inner wall of the flange 62, thus fixing the mounting brackets 1 in place. A sleeve 14 is provided on the rectangular frame 11. One end of the fixing rod 2 is inserted into the sleeve 14 and locked to the sleeve 14 with a pin or bolt, forming a longitudinal support frame between the two mounting brackets 1. Square rods 5 are symmetrically installed between the two mounting brackets 1. The rectangular frame 11 on the mounting bracket 1 is provided with a waist-shaped adjustment groove 53. The position of the square rod 5 in the waist-shaped adjustment groove 53 is adjusted by bolts and nuts, thereby adjusting the distance between the square rod 5 and the wing plate 62. The wave guide rail 51 is fixed on the side of the square rod 5 facing the slide 3. Multiple pressure sensors 52 are installed at equal intervals on the side of the square rod 5 near the wing plate 62. By adjusting the distance between the square rod 5 and the wing plate 62, the pressure sensors 52 are made to be in contact with the wing plate 62.

[0055] In another embodiment, a fixed rod 2 and a lead screw are connected between the two mounting brackets 1. A motor is installed on one of the mounting brackets 1, and the output end of the motor is connected to one end of the lead screw. The motor drives the lead screw to rotate. The slide 3 is threadedly connected to the lead screw and slidably connected to the fixed rod 2. Therefore, the slide 3 can move automatically between the two mounting brackets 1 without the need for manual pushing of the slide 3 on the fixed rod 2.

[0056] This device performs weld inspection on longer H-beams 6 by forming a weld inspection zone between two mounting frames 1 and by conducting segmented inspections.

[0057] The arm 31 of the slide 3 is slidably sleeved on the fixed rod 2, and the mounting plate 32 is connected to the arm 31 to form the main structure of the slide 3. There are two mounting plates 32, and two grooves 321 are opened on the two mounting plates 32 respectively. The rectangular tube 33 is slidably installed in the grooves 321. The screw 331 is threadedly connected to the mounting plate 32 and its end is rotatably connected to the connecting plate on the rectangular tube 33. Rotating the screw 331 can drive the rectangular tube 33 to move vertically along the grooves 321, so as to realize the vertical distance adjustment of the mounting arm 353. The mounting arm 353 is symmetrically threaded with locking rods 354. The locking rods 354 are used to fix the ultrasonic probe 355 on the mounting arm 353 (one end of the locking rod 354 abuts against the outer shell of the ultrasonic probe 355, and a rubber pad is provided on the contact end of the locking rod 354 and the ultrasonic probe 355). A bidirectional screw 34 is rotatably connected to the rectangular tube 33. A guide rod 341 is arranged parallel to the bidirectional screw 34. A connecting arm 342 is threadedly connected to the bidirectional screw 34 and slidably connected to the guide rod 341. Rotating the bidirectional screw 34 can drive the two connecting arms 342 to move synchronously in opposite directions or move closer to each other, thereby adjusting the lateral distance of the mounting arm 353. In another embodiment, the bidirectional screw 34 is replaced by a screw three, with screw three rotatably connected to both ends of the rectangular tube 33, allowing for individual adjustment of the two mounting arms 353.

[0058] The double support arm 35 is slidably connected to the connecting arm 342 via the connecting rod 343. Spring 344 is sleeved on the connecting rod 343, and both ends of spring 344 are fixedly connected to the connecting arm 342 and the double support arm 35 respectively. The mounting arm 353 is rotatably connected to the support arm 351 of the double support arm 35 via the connecting shaft 356. Torsion spring 357 is sleeved on the connecting shaft 356 to ensure that the ultrasonic probe 355 is tightly attached to the web 61 of the H-beam 6. The sealing cylinder 4 is installed on the second support arm 352. The guide wheel 41 at one end of the piston rod 42 contacts the wave guide rail 51, and the piston at the other end is slidably connected to the inner wall of the sealing cylinder 4. Spring 43 is placed between the piston and the bottom of the sealing cylinder 4. One end of the suction pipe 44 is connected to the coupling agent storage box (the coupling agent storage box is mounted on the slide 3), and the other end is connected to the bottom of the sealing cylinder 4; one end of the discharge pipe 45 is connected to the top of the sealing cylinder 4, and the other end is equipped with an L-shaped scraper 46 for spraying liquid. The bent section 462 of the L-shaped scraper 46 is inclined away from the ultrasonic probe 355 and fits against the web plate 61. Multiple slots 461 are opened on the contact surface between the L-shaped scraper 46 and the web plate 61. It should be understood that the inner diameter of the sealing cylinder 4 is designed according to the amount of coupling agent sprayed at one time to avoid excessive spraying of coupling agent.

[0059] According to the specifications of H-beam 6, rotate screw 331 to adjust the height of rectangular tube 33 so that ultrasonic probe 355 is in contact with the surface of web plate 61. Rotate double screw 34 to adjust the spacing of connecting arm 342 so that ultrasonic probes 355 on both sides are aligned with the fillet welds of web plate 61 and side flanges 62 respectively.

[0060] By adjusting the square rod 5 to make it fit against the side wall of the wing plate 62, the pressure sensor 52 collects and stores the initial pressure reference value F0 in the absence of thrust. At the same time, the ultrasonic probe 355 fits against the web plate 61 near the fillet weld under the action of the torsion spring 357. It should be understood that the ultrasonic probe 355 is connected to the main unit of the ultrasonic weld detector. A placement frame can be installed on the slide 3. The ultrasonic weld detector is installed on the placement frame on the slide 3. It cannot be manually held. It is convenient for the operator to push the slide 3 to move, or hold the ultrasonic weld detector in one hand and push the slide 3 to move with the other hand.

[0061] During use, the slide 3 moves longitudinally, and the guide wheel 41 rolls along the wave profile of the wave guide rail 51. When the guide wheel 41 is at the crest of the wave guide rail 51, the piston rod 42 not only reaches the bottom of the sealing cylinder 4, but also pushes the double support arm 35 to slide on the connecting rod 343 and squeeze the spring 344. This causes the guide wheel 41 to move along the wave path, simultaneously causing the ultrasonic probe 355 to swing laterally, simulating manual lateral swinging of the ultrasonic probe 355. In addition, the ultrasonic probe 355 designed in this device swings along a wave path, which, compared to the sawtooth lateral swinging method in the prior art, can target the fillet weld cross-sectional shape of the H-beam 6 ("L" shape or "..."). (T-shaped) The fusion line between the weld metal and the base metal is a broken line or a curve. For example, the fusion lines on both sides of a right-angle fillet weld turn at 90°, and the heat-affected zone is distributed on the edges of the base metal on both sides. The traditional zigzag path's horizontal straight oscillation is prone to discontinuity in coverage at the turning point. However, the continuous arc oscillation of the wavy path can better fit the broken line direction of the fillet weld, thereby reducing the blind spot in the inspection. At the same time, for right-angle fillet welds, the arc oscillation can naturally transition between the fusion line areas in the two vertical directions, avoiding the interruption of the sound beam caused by the "reversal pause" at the turning point of the zigzag path, and ensuring that the fusion line (this fusion line is a high-incidence area of ​​defects in fillet welds, such as lack of fusion, cracks, etc.) is continuously covered.

[0062] The oscillation amplitude of the wave path is determined by the undulation amplitude H of the wave guide 51. 波幅 The decision is to ensure that the sound beam covers the weld and heat-affected zone to avoid missed detection. The torsion spring 357 can compensate for the unevenness of the surface of the web plate 61 and ensure stable coupling between the ultrasonic probe 355 and the web plate 61.

[0063] When the guide wheel 41 rolls along the wave guide rail 51, the piston rod 42 slides back and forth inside the sealing cylinder 4: when the guide wheel 41 is at the crest of the wave guide rail 51, the piston rod 42 compresses the second spring 43 and pushes the piston to move towards the bottom of the sealing cylinder 4, the pressure inside the sealing cylinder 4 increases, and the coupling agent is sprayed out through the drain pipe 45; when the guide wheel 41 is at the trough, the second spring 43 resets and pushes the piston to move upward, a negative pressure is formed inside the sealing cylinder 4, and the coupling agent is drawn in from the coupling agent storage box through the suction pipe 44.

[0064] When the double arms 35 swing laterally along a wavy path, the L-shaped scraper 46 also swings laterally. During this lateral swing, the bending section 462 first cleans impurities from the weld surface (the area through which the ultrasonic probe 355 will pass has already been cleaned before the installation of this device; the bending section 462 is used to clean any missed impurities again), and the slot 461 evenly coats the sprayed coupling agent to ensure stable coupling between the ultrasonic probe 355 and the web 61, thereby improving propagation efficiency. Secondly, by setting the L-shaped scraper 46 to an inclined position, a swaying zone 7 can be formed between the L-shaped scraper 46 and the bending section 462. The drain pipe 45 will discharge the coupling agent into the swaying zone 7. Since the L-shaped scraper 46 will move in a lateral swinging manner, the coupling agent located in the swaying zone 7 can be better applied to the area that the ultrasonic probe 355 needs to pass through. With the setting of the slot 461, the coupling agent sprayed on the web plate 61 will not be scraped off during the movement of the L-shaped scraper 46. This allows the coupling agent to be applied more evenly, thereby improving the detection effect of the ultrasonic probe 355.

[0065] The deformation monitoring principle of wing plate 62: When the guide wheel 41 rolls along the wave guide rail 51, when the guide wheel 41 reaches the crest of the arc, the double support arm 35 compresses the spring 344, causing the guide wheel 41 to apply a periodic thrust towards the wing plate 62 on the wave guide rail 51 and the square rod 5. If the wing plate 62 does not have significant deformation, the real-time pressure value F(t) collected by the pressure sensor 52 will be within the range of F... 低限 With F 高限 The fluctuations are periodic, and the fluctuation amplitude ΔF(t) is related to the fluctuation amplitude H of the wave guide 51. 波幅 There is a positive correlation; if the wing plate 62 bends inward, the pressure value of the pressure sensor 52 increases, and F(t) > F 高限 +ΔF 临界 And the rate of pressure change dF(t) / dt > v 增速 If the wing plate 62 bends outward, there will be a gap between the square rod 5 and the wing plate 62, and part of the pressure sensor 52 will not be in contact with the wing plate 62. Initially, F(t) = 0, or F(t) will be affected after the pressure sensor 52 comes into contact with the web plate 61. <F 低限 -ΔF 临界 And ΔF(t) < δ 波动 By combining the position of pressure sensor 52 and the moving distance of carriage 3, the specific location of deformation can be determined.

[0066] Therefore, the steps for monitoring whether the wing plate 62 is deformed using pressure sensor 52 are as follows:

[0067] S1. Establishing the reference state: After the device is installed, the pressure sensor 52 on the adjusting rod 5 is attached to the surface of the wing plate 62. The initial pressure reference value F0 of the pressure sensor 52 in the no-thrust state is recorded and stored through the data acquisition system.

[0068] S2. Dynamic pressure capture: When the carriage 3 moves longitudinally on the fixed rod 2, the guide wheel 41 reciprocates along the wave path of the wave guide rail 51 and generates a periodic thrust toward the wing plate 62 on the wave guide rail 51 and the square rod 5. The pressure sensor 52 collects the pressure value change between itself and the wing plate 62 in real time and transmits it to the monitoring system.

[0069] S3. Deformation Judgment: If the real-time pressure value F(t) satisfies F 低限 ≤F(t)≤F 高限 Furthermore, the fluctuation amplitude ΔF(t) is related to the fluctuation amplitude H of the wave guide 51. 波幅 If they are positively correlated, then it can be determined that the airfoil 62 has no obvious deformation; if F(t) > F 高限 +ΔF 临界 And the rate of pressure change dF(t) / dt > v 增速 If the initial state F(t) = 0 or F(t) after contact, then it is determined that the wing plate 62 has inward bending deformation; <F 低限 -ΔF 临界 And ΔF(t) < δ 波动 If ΔF is present, then it is determined that the wing plate 62 exhibits outward bending deformation; where ΔF 临界 As a preset pressure threshold, v 增速 δ is the threshold for the minimum rate of pressure rise. 波动 This is the minimum pressure fluctuation threshold.

[0070] S4. Positioning Record: Combining the equally spaced positions of the pressure sensors 52 on the square rod 5 and the longitudinal movement information of the carriage 3, determine the specific position of the deformation of the wing plate 62.

[0071] It is important to understand that the length of the square rod 5 needs to take into account the deformation of the square rod 5 itself, so as to avoid the square rod 5 bending and deforming due to excessive length, which would cause it to not fit properly with the wing plate 62 and affect the detection accuracy of the pressure sensor 52.

[0072] Therefore, by setting the wave guide rail 51, this device can not only realize the ultrasonic probe 355 to automatically swing laterally in a wave path, and improve the weld detection effect for H-beam 6, but also realize the automatic spraying of coupling agent by means of the design of the wave guide rail 51. Furthermore, by combining the wave guide rail 51 with the L-shaped scraper 46, the coupling agent can be evenly applied in a wave path.

[0073] Meanwhile, the wave guide 51 can automatically determine whether the welded flange 62 has bent or deformed during the fillet weld inspection process, thereby improving the welding quality of the H-beam 6.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-described technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for inspecting weld seams in rigid steel columns, characterized in that, include: The fixing rods (2) are respectively connected to the mounting brackets (1) at both ends. The fixing rods (2) are symmetrically arranged on the mounting brackets (1). The mounting brackets (1) are connected to the H-beams (6). The slide (3) is slidably connected to the fixed rod (2) and forms a weld movement detection area between the two mounting brackets (1); Mounting arms (353) are symmetrically arranged on the slide (3) by torsion springs (357), and ultrasonic probes (355) are respectively mounted on the two mounting arms (353); An adjustment assembly, connected to the carriage (3), is used to adjust the lateral and vertical distance of the mounting arm (353) on the carriage (3); A wave guide rail (51) is symmetrically connected between the two mounting brackets (1), and one end of the ultrasonic probe (355) is in contact with the wave guide rail (51). When the carriage (3) moves longitudinally on the fixed rod (2), the mounting arm (353) and the wave guide rail (51) work together to swing laterally along the wave path; The carriage (3) includes arms (31) respectively installed on both sides of two mounting plates (32), and the arms (31) are slidably connected to two fixed rods (2); The adjustment assembly includes a bidirectional screw (34) and a second screw (331). Connecting arms (342) are slidably connected to the guide rods (341) on both sides of the second screw (331). The connecting arms (342) are threadedly connected to the adjacent bidirectional screw (34). A connecting rod (343) is symmetrically fixedly connected to one end of the connecting arm (342). Double support arms (35) are slidably connected to the symmetrical connecting rods (343). It also includes a coupling agent spraying assembly installed on the double support arm (35), the coupling agent spraying assembly including a sealing cylinder (4) installed on the second support arm (352) of the double support arm (35), and a piston rod (42) with a piston at one end is slidably connected in the sealing cylinder (4). It also includes a square rod (5) symmetrically installed between two mounting brackets (1), the wave guide rail (51) is installed on the square rod (5), and multiple pressure sensors (52) are installed at equal intervals on the side of the square rod (5) near the wing plate (62); a guide wheel (41) is rotatably connected to the end of the piston rod (4) away from the sealing cylinder (4), and the guide wheel (41) is adapted to the wave guide rail (51); when the slide (3) moves longitudinally on the fixed rod (2) and drives the mounting arm (353) to swing laterally, the guide wheel (41) rolls along the wave surface of the wave guide rail (51) and applies a periodic thrust toward the wing plate (62) to the square rod (5), and the change of the value is monitored by the pressure sensor (52) to detect whether the wing plate (62) is deformed.

2. The device for detecting weld seams in rigid steel columns according to claim 1, characterized in that, The mounting bracket (1) includes a rectangular frame (11) and a hanging bracket (12) symmetrically arranged on both sides of the rectangular frame (11). The hanging bracket (12) positions the mounting bracket (1) on the wing plate (62) of the H-beam (6). A screw (13) is symmetrically threaded on the rectangular frame (11) to fix the rectangular frame (11) between the two wing plates (62).

3. The device for detecting weld seams in rigid steel columns according to claim 1, characterized in that, Both mounting plates (32) are symmetrically provided with sliding grooves (321), and rectangular tubes (33) are slidably connected in both sliding grooves (321). The bidirectional screw (34) is rotatably connected to one of the rectangular tubes (33), and the guide rod (341) is fixedly connected to the other rectangular tube (33). The second screw (331) is threadedly connected to the mounting plate (32), and the end of the second screw (331) is rotatably connected to the connecting plate between the two rectangular tubes (33).

4. The device for detecting weld seams in rigid steel columns according to claim 3, characterized in that, A spring (344) is connected between the double support arm (35) and the connecting arm (342). The mounting arm (353) is rotatably connected to the support arm (351) of the double support arm (35) via the connecting shaft (356). The torsion spring (357) is sleeved on the connecting shaft (356).

5. The device for detecting weld seams in rigid steel columns according to claim 4, characterized in that, When the ultrasonic probe (355) moves longitudinally along a wave path, the coupling agent spraying assembly sprays coupling agent onto the web (61) of the H-beam (6) in the direction of travel of the carriage (3).

6. The device for detecting weld seams in rigid steel columns according to claim 5, characterized in that, A spring 2 (43) is provided between the piston of the piston rod (42) and the sealing cylinder (4). A suction pipe (44) and a discharge pipe (45) are fixedly connected to the sealing cylinder (4). One end of the suction pipe (44) is connected to the coupling agent storage box, and the spray end of the discharge pipe (45) is located on one side of the mounting arm (353).

7. The device for detecting weld seams in rigid steel columns according to claim 6, characterized in that, An L-shaped scraper (46) is installed on the spray end of the drain pipe (45). The bent section (462) of the L-shaped scraper (46) is inclined away from the ultrasonic probe (355). A groove (461) is opened on the bottom surface of the L-shaped scraper (46).

8. The device for detecting weld seams in rigid steel columns according to claim 1, characterized in that, The steps for monitoring whether there is deformation of the wing plate (62) using the pressure sensor (52) are as follows: S1. Establishment of reference state: After the device is installed, the pressure sensor (52) on the adjusting rod (5) is attached to the surface of the wing plate (62), and the initial pressure reference value F0 of the pressure sensor (52) in the no-thrust state is recorded and stored through the data acquisition system. S2, Dynamic pressure capture: When the carriage (3) moves longitudinally on the fixed rod (2), the guide wheel (41) moves back and forth along the wave path of the wave guide rail (51) and generates a periodic thrust toward the wing plate (62) on the wave guide rail (51) and the square rod (5). The pressure sensor (52) collects the pressure value change between itself and the wing plate (62) in real time and transmits it to the monitoring system. S3. Deformation Judgment: If the real-time pressure value F(t) satisfies F 低限 ≤F(t)≤F 高限 Furthermore, the fluctuation amplitude ΔF(t) and the fluctuation amplitude H of the wave guide (51) are related. 波幅 If they are positively correlated, then the airfoil (62) is judged to have no obvious deformation; if F(t) > F 高限 +ΔF 临界 And the rate of pressure change dF(t) / dt > v 增速 If the initial state F(t) = 0 or the F(t) after contact is positive, then it is determined that the wing plate (62) has an inward bending deformation; <F 低限 -ΔF 临界 And ΔF(t) < δ 波动 If the wing plate (62) exhibits outward bending deformation, then ΔF is determined to be the case. 临界 As a preset pressure threshold, v 增速 δ is the threshold for the minimum rate of pressure rise. 波动 This is the minimum pressure fluctuation threshold. S4. Positioning Record: Combining the equally spaced positions of the pressure sensors (52) on the square rod (5) and the longitudinal movement position information of the carriage (3), the specific position of the deformation of the wing plate (62) is determined.

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