Metal magnetic memory detection device for detecting steel structure beam column node welding seam

Abstract

The invention relates to the technical field of steel structure quality detection equipment, in particular to a metal magnetic memory detection device for detecting a steel structure beam-column joint welding seam, and aims to solve the problem that an existing magnetic memory detection device for a steel structure welding seam is low in universality and flexibility. The metal magnetic memory detection device for detecting the steel structure beam-column joint welding seam comprises a magnetic memory probe, the device further comprises a holding tool mechanism, an adjusting mechanism and a detection mechanism. The holding tool mechanism is detachably connected with the I-shaped steel; the adjusting mechanism is detachably connected with the holding tool mechanism. The holding tool mechanism comprises two moving assemblies, a plurality of mounting rods and two stabilizing assemblies. The displacement assembly comprises a plurality of connecting rods, a driving assembly and a plurality of buffering pieces. According to the metal magnetic memory detection device for detecting the steel structure beam-column joint welding seam, the magnetic memory probe can be accurately moved to any position of the welding seam, and the metal magnetic memory detection device can be flexibly used according to different working conditions.

Description

Technical Field

[0001] The present invention relates to the technical field of steel structure quality detection equipment, and in particular to a metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures. Background Art

[0002] Steel beam-column joints are critical load-bearing locations in buildings, bridges, industrial facilities, and other projects. The quality of their welds directly impacts the load-bearing capacity and seismic performance of the overall structure. However, traditional nondestructive testing methods (such as ultrasonic, X-ray, and magnetic particle testing) have numerous limitations in weld inspection, necessitating a more efficient and sensitive technique. Metal magnetic memory testing, an emerging nondestructive testing method, has become a research hotspot for steel structure weld inspection due to its sensitivity to early stress concentrations and microscopic defects. Currently, there is a lack of dedicated magnetic memory testing devices for steel structure beam-column joints. Most inspections are performed manually with magnetic memory probes, which is labor-intensive, inefficient, and lacks full weld coverage, resulting in numerous drawbacks and limitations. Therefore, the development of a metal magnetic memory testing device for inspecting welds in steel structure beam-column joints stems from the limitations of manual testing and the safety requirements of steel structures. Key technical challenges lie in engineering applicability, test stability, and data integrity. Overcoming these challenges will promote the widespread application of this technology in the field of nondestructive monitoring of steel structures, enhancing the safety and reliability of major infrastructure.

[0003] When using metal magnetic memory detection technology to perform non-destructive testing of steel structure beam-column nodes, the test result, that is, the size of the magnetic signal, will fluctuate due to the different lift-off values of the probe, the angle of the probe, and the stability during the test, which will affect the accuracy of the test result. Therefore, in order to ensure the accuracy of the test results, it is particularly important to invent an effective and reliable magnetic memory non-destructive testing device for steel structure beam-column nodes. In the process of steel structure node detection, how to adapt to different beam and column cross-sections and how to quickly climb along the columns have become technical problems that need to be solved urgently by the detection device. Metal magnetic memory detection technology has been widely used in machinery, containers, remanufacturing and other fields. However, there is currently no magnetic memory detection device for steel structure node welds that can achieve autonomous climbing, adapt to different beam and column cross-sections, and full-node weld coverage scanning. Summary of the Invention

[0004] In response to the problems existing in the above-mentioned prior art, the present invention provides a metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures. On the one hand, through the coordinated action of the clamping mechanism, track assembly, telescopic parts and rotation / flipping structure, the magnetic memory probe can be accurately moved to any position of the beam-column node weld; on the other hand, the major mechanisms (clamping, adjustment, detection) adopt a detachable connection method, which is convenient for transportation, on-site installation and maintenance, and can be flexibly used according to different working conditions.

[0005] To achieve the above object, the technical solution adopted by the present invention is: The present application provides a metal magnetic memory detection device designed for detecting welds at the nodes of beams and columns of steel structures, comprising a magnetic memory probe for detecting welds at I-beams; further comprising a clamping mechanism, an adjustment mechanism and a detection mechanism; the clamping mechanism is detachably connected to the I-beam for moving the magnetic memory probe to a detection height; the adjustment mechanism is detachably connected to the clamping mechanism for moving the magnetic memory probe to different detection quadrants to achieve multi-directional detection; the detection mechanism is arranged on the adjustment mechanism and connected to the magnetic memory probe for fine-tuning the angle and height of the magnetic memory probe.

[0006] Furthermore, the holding mechanism includes two moving components, multiple mounting rods and two stabilizing components; the two displacement components are arranged in parallel up and down, used to surround the I-beam and move up and down; the multiple mounting rods are used to connect the two displacement components and connect the adjustment mechanism; the two stabilizing components are symmetrically arranged on the inner sides of the two opposite mounting rods, used to firmly support the metal magnetic memory detection device on the I-beam.

[0007] Furthermore, the displacement assembly includes multiple connecting rods, a drive assembly, multiple rolling elements and a buffer element; the multiple connecting rods are interconnected to form a square structure; the drive assembly is arranged on the inner side of one of the connecting rods to provide power for up and down movement; the multiple rolling elements are respectively arranged on the other connecting rods; the buffer element is arranged on the connecting rod opposite to the drive assembly and is connected to the corresponding rolling element.

[0008] Furthermore, the displacement assembly also includes a plurality of first fixing blocks and a plurality of second fixing blocks; the plurality of first fixing blocks are used to connect two adjacent connecting rods; and the plurality of second fixing blocks are used to connect the connecting rods and corresponding mounting rods.

[0009] Furthermore, the adjustment mechanism includes two track assemblies, two moving assemblies and a telescopic part; the two track assemblies are C-shaped structures and are symmetrically arranged on two opposite mounting rods; the two moving assemblies are arranged on the track assemblies for adjusting the quadrants of the magnetic memory probe; the telescopic part is arranged on the moving assembly and the detection mechanism is installed for adjusting the position of the magnetic memory probe.

[0010] Furthermore, the track assembly includes a track body and a gear condition; the track body has a C-shaped structure and is connected to the mounting rod through a connecting block; the gear condition is arranged in the track body and matches the moving assembly.

[0011] Furthermore, the moving assembly includes multiple pulleys, gear parts and a moving plate; the multiple pulleys are arranged on both sides of the track body for clamping the track body and assisting in movement; the gear parts are arranged on the inner side of the track body and engage with the gear conditions; the moving plate is installed above the pulleys and gear parts for installing the telescopic parts.

[0012] Furthermore, the detection assembly includes a mounting seat, an adjustment member and a detection body; the mounting seat is installed at the telescopic end of the telescopic member; the adjustment member is arranged on the mounting seat; the detection body is installed on the adjustment member for adjusting the angle of the magnetic memory probe.

[0013] Furthermore, the detection body includes a gear group and a reversing group; the gear group is installed at the top of the outer sleeve and is connected to the magnetic memory probe through a rotating shaft, which is used to rotate the magnetic memory probe 360°; the reversing group is arranged between the rotating shaft and the magnetic memory probe, which is used to rotate the magnetic memory probe 180°.

[0014] A detection method of a metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures, comprising the following steps: S1: Move the magnetic memory probe to the corresponding height of the weld on the I-beam through the holding mechanism; S2: Use the adjustment mechanism to move the magnetic memory probe to different quadrants for testing; S3: Use the telescopic part to move the magnetic memory probe in a straight line to detect welds in different ranges on the I-beam; S4: Use the adjustment piece to move the magnetic memory probe vertically to detect welds at different heights of the I-beam; S5: Use the detection body to change the angle of the magnetic memory probe to expand the detection range.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. Multiple degrees of freedom adjustment enables comprehensive, seamless inspection. The device utilizes a gripper mechanism, track assembly, telescopic components, and a rotating / flipping mechanism to precisely position the magnetic memory probe at any location within the beam-column joint weld. The detection mechanism features a height adjustment system consisting of a lifting screw and outer sleeve, enabling millimeter-level fine adjustment. This allows for dual angle adjustment (360° rotation + 180° flip), covering all directions and areas of the weld, effectively preventing missed inspections. This also improves probe fit and data collection accuracy, making it suitable for projects requiring the highest precision. Removable connections between the various mechanisms (grip, adjustment, and detection) facilitate transport, on-site installation, and maintenance, allowing for flexible use according to varying working conditions, enhancing the device's versatility and applicability. The gripper mechanism features an enclosing structure capable of clamping I-beams of varying cross-sections. The drive assembly and buffer ensure stable operation regardless of size.

[0016] 2. The device can be remotely controlled to complete up and down movement, azimuth adjustment and probe positioning, avoiding the safety hazards brought by traditional manual climbing operations. It is particularly suitable for weld inspection tasks in complex or dangerous environments such as high-rise buildings and bridges. No surface pretreatment (such as grinding and coupling agents) is required, and complex nodes (such as fillet welds and hidden welds) can be quickly scanned over a large area. The inspection efficiency is greatly improved compared to traditional methods. It is especially suitable for on-site in-situ inspection, reducing manual intervention and equipment disassembly and assembly costs.

[0017] 3. The combination of rolling elements and buffers ensures smoother vertical movement. The rack-and-pinion transmission ensures stability and precision during adjustment, reducing the probability of misoperation. The cost of a single inspection is lower than traditional nondestructive testing (NDT) techniques, and the equipment is reusable, significantly reducing unit inspection costs over the long term. Early intervention prevents defects from expanding, extending the service life of steel structures and reducing reconstruction costs associated with decommissioning. For example, early detection and repair of damaged beam-column joints in steel structures can extend the service life of the structure and save on reconstruction costs.

[0018] 4. The structural design provides a good interface for subsequent integration into automatic control systems (such as PLC control, wireless remote control, and AI recognition). In the future, fully automated weld health assessment can be achieved by adding sensors, image recognition, and data analysis modules. This metal magnetic memory detection device not only solves the problems of low efficiency, numerous blind spots, and poor safety in traditional weld inspection, but also provides a feasible technical path for intelligent, automated, and standardized steel structure inspection in the future, with important engineering application value and social promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 Schematic diagram of the use of the detection device of the present invention; Figure 3 Schematic diagram of the structure of the holding mechanism in the present invention; Figure 4 1 is a top view of the holding mechanism of the present invention; Figure 5 Schematic diagram of the structure of the displacement assembly in the present invention; Figure 6 Schematic diagram of the structure of the connecting block in the present invention; Figure 7 It is a structural schematic diagram of the stabilizing component in the present invention; Figure 8 It is a structural schematic diagram of the mounting rod in the present invention; Figure 9 Schematic diagram of the structure of the first fixing block in the present invention; Figure 10 Schematic diagram of the structure of the second fixing block in the present invention; Figure 11 Schematic diagram of the structure of the adjustment mechanism of the present invention; Figure 12 Schematic diagram of the structure of the track assembly in the present invention; Figure 13 It is a structural schematic diagram of the mobile component in the present invention; Figure 14 Schematic diagram of the structure of the detection mechanism of the present invention; Figure 15 is a cross-sectional view of the adjusting member of the present invention; Figure 16 Schematic diagram of the structure of the gear set in the present invention; Figure 17 It is a structural schematic diagram of the reversing group in the present invention.

[0021] In the figure: 1-magnetic memory probe; 2-holding mechanism; 21-displacement assembly; 211-connecting rod; 212-driving assembly; 213-buffer; 214-first fixing block; 2141-cage; 215-second fixing block; 216-rolling element; 217-roller; 218-fixing plate; 22-mounting rod; 221-cage; 23-stabilizing assembly; 231-support plate; 232-electric telescopic rod; 233-fixing column; 3-adjusting mechanism Structure; 31-track assembly; 311-track body; 312-tooth condition; 313-connecting block; 32-moving assembly; 321-pulley; 322-gear member; 323-moving plate; 324-block; 33-telescopic member; 4-detection mechanism; 41-mounting seat; 42-adjusting member; 421-lifting screw rod; 422-outer sleeve; 423-lifting cylinder; 43-detection body; 431-gear group; 432-reversing group; 5-I-beam. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments, rather than all the embodiments.

[0023] In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] It should also be noted that, in the description of this application, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on the specific circumstances.

[0025] Example 1 Combine Figure 1-17As shown, the present invention provides a metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures, comprising a magnetic memory probe 1 for detecting welds at I-beams 5, wherein the magnetic memory probe 1 can collect metal magnetic memory signals overflowing from the surface of the component; further comprising a clamping mechanism 2, an adjustment mechanism 3 and a detection mechanism 4; the clamping mechanism 2 is detachably connected to the I-beam 5, and is used to move the magnetic memory probe 1 to a detection height; the adjustment mechanism 3 is detachably connected to the clamping mechanism 2, and is used to move the magnetic memory probe 1 to different detection quadrants to achieve multi-directional detection; the detection mechanism 4 is arranged on the adjustment mechanism 3 and is connected to the magnetic memory probe 1, and is used to fine-tune the angle and height of the magnetic memory probe 1.

[0026] Magnetic memory detection technology is a non-destructive testing method based on the changes in the magnetic field state of metal materials. It mainly utilizes the spontaneous magnetization phenomenon generated by metal components under stress, the so-called "magnetomechanical effect". This effect causes the magnetic domain structure inside the material to change, thereby leading to changes in local magnetic field intensity. These changes can reflect information such as stress concentration areas and defects inside the material.

[0027] This device, designed around the I-beam 5 at the beam-column junction, enables functions such as vertical movement, horizontal rotation, and angle fine-tuning, ensuring that the magnetic memory probe 1 can accurately scan the weld area. The magnetic memory probe 1 is prior art and will not be described in detail in this application. The gripping mechanism 2 can move up and down along the height of the I-beam 5. At the start of testing, the gripping mechanism 2 further reinforces contact with the I-beam 5 to prevent accidental shaking during testing. The I-beam 5 comprises a horizontal beam and a vertical column. Therefore, multiple welds may exist at the beam-column junction of the I-beam 5, with varying locations and heights. Furthermore, the I-beam 5 itself may be welded, resulting in multiple full-length welds along the I-beam 5. The adjustment mechanism 3 allows the magnetic memory probe 1 to be moved to different positions within the same plane, enabling detection of node areas and beam end welds at the same height in different quadrants. The detection mechanism 4 further precisely controls the detection position of the magnetic memory probe 1, including height and angle adjustments, enabling rapid and accurate multi-directional testing.

[0028] Furthermore, the holding mechanism 2 includes two moving components 32, multiple mounting rods 22 and two stabilizing components 23; the two displacement components 21 are arranged in parallel up and down, used to surround the I-beam 5 and move up and down; the multiple mounting rods 22 are used to connect the two displacement components 21 and connect the adjustment mechanism 3; the two stabilizing components 23 are symmetrically arranged on the inner sides of the two opposite mounting rods 22, used to firmly support the metal magnetic memory detection device on the I-beam 5.

[0029] The two mobile assemblies 32 have the same structure, and the placement of each structure corresponds to each other, forming a unified upper and lower structure. There are four mounting rods 22, each connected to the corresponding mobile assembly 32 at both ends, stably connecting the two mobile assemblies 32 together. Two clamping plates 221 are provided on the outside of each mounting rod 22 for connecting to the adjustment mechanism 3. The stabilizing assembly 23 includes two support plates 231 and an electric telescopic rod 232. The output end of the electric telescopic rod 232 can be extended and retracted to both sides simultaneously. The two support plates 231 are connected to the output ends at both ends. When the device moves to the specified height, the telescopic rod 232 is activated to open the two support plates 231 and support them against the inner wall of the groove of the I-beam 5.

[0030] Furthermore, the displacement assembly 21 includes multiple connecting rods 211, a driving assembly 212, multiple rolling elements 216 and a buffer element 213; the multiple connecting rods 211 are interconnected to form a square structure; the driving assembly 212 is arranged on the inner side of one of the connecting rods 211 to provide power for up and down movement; multiple rolling elements 216 are respectively arranged on other connecting rods; the buffer element 213 is arranged on the connecting rod 211 opposite to the driving assembly 212, and is connected to the corresponding rolling element 216.

[0031] The connecting rod 211 and mounting rod 22 can be made of lightweight, high-strength aluminum alloy or carbon steel. The drive assembly 212 is a motor with output shafts on both sides. Rollers 217 are mounted on the ends of each output shaft. The output shafts are rotationally connected to the connecting rod 211 via a fixing plate 218, further strengthening the structural stability. Each displacement assembly 21 includes three groups of six rolling elements 216, each group mounted on a corresponding connecting rod 211 and mating with rollers 217. Each displacement assembly 21 includes a set of buffers 213.

[0032] Furthermore, the displacement assembly 21 also includes a plurality of first fixing blocks 214 and a plurality of second fixing blocks 215 ; the plurality of first fixing blocks 214 are used to connect two adjacent connecting rods 211 ; the plurality of second fixing blocks 215 are used to connect the connecting rods 211 and the corresponding mounting rods 22 .

[0033] Both the first fixing block 214 and the second fixing block 215 are provided with a circular hole that matches the connecting rod 211, as well as a slot 2141. A threaded hole is also provided corresponding to the slot 2141. After the connecting rod 211 is inserted into the circular hole, the bolts and nuts are tightened to narrow the slot 2141, thereby securing the connecting rod 211 to the column 233. Multiple rolling elements 216 are mounted on the connecting rod 211 via the second fixing block 215. The rolling elements 216 are plugged into the corresponding second fixing block 215, facilitating removal and installation. The principle of the buffer 213 refers to the spring. One end of the buffer 213 is connected to the corresponding rolling member 216, and the other end is connected to the corresponding second fixed block 215. The rolling member 216 corresponding to the buffer 213 is slidably connected to the second fixed block 215. Its function is to provide a certain elasticity when the driving component 212 drives the roller 217 to roll. When the roller 217 stops, the device can also be clamped on the I-beam 5, and if a protrusion is encountered during movement, the buffer 213 can be squeezed and compressed to allow the device to pass through the protrusion smoothly.

[0034] The working principle of the metal magnetic memory detection device for detecting welds at the nodes of beams and columns of steel structures in this embodiment is as follows: when in use, the magnetic memory probe 1 is moved along the I-beam 5 to a height close to the weld through the holding mechanism 2, the adjustment mechanism 3 is started to adjust the magnetic memory probe 1 to the position required for detection, and then the detection mechanism 4 is started to make the magnetic memory probe 1 accurately close to the weld. When the detection area needs to be changed, the adjustment mechanism 3 is started again to adjust the position of the magnetic memory probe 1.

[0035] Among them, the specific principle of the holding mechanism 2 is: according to the model of the I-beam 5, the connecting rod 211 is first connected together through the first fixed block 214 and surrounds the I-beam 5, and the holding mechanism 2 is fixedly clamped on the I-beam 5 by the elastic force of the buffer 213, and then the adjustment mechanism 3 and the detection mechanism 4 are installed on the holding mechanism 2, and the upper and lower drive components 212 are started at the same time so that the output shaft drives the four rollers 217 to roll upward along the side wall of the I-beam 5, thereby making the device reach the required height, and by starting the two electric telescopic rods 232 to support the four support plates 231 to the inner wall of the groove of the I-beam 5, it can be ensured that the device is stable and does not shake during the detection process, and the accuracy of the detection results can be ensured.

[0036] Example 2 On the basis of the first embodiment, the second embodiment provides a specific structure of an adjustment mechanism 3, which further improves the flexibility of the device.

[0037] Specifically, the adjustment mechanism 3 includes two track assemblies 31, two moving assemblies 32 and a telescopic member 33; the two track assemblies 31 have a C-shaped structure and are symmetrically arranged on two opposite mounting rods 22; the two moving assemblies 32 are arranged on the track assembly 31 for adjusting the quadrant of the magnetic memory probe 1; the telescopic member 33 is arranged on the moving assembly 32 and is installed with the detection mechanism 4 for adjusting the position of the magnetic memory probe 1.

[0038] Two track assemblies 31 are bolted together to form a circular track. A movable assembly 32 is provided on each track assembly 31, allowing the two magnetic memory probes 1 to operate simultaneously, improving detection efficiency. The telescopic member 33 is electrically driven to extend and retract, thereby moving the detection mechanism 4 to another position on the I-beam 5 for detection.

[0039] Furthermore, the track assembly 31 includes a track body 311 and a gear condition 312 ; the track body 311 is a C-shaped structure, connected to the mounting rod 22 via a connecting block 313 ; the gear condition 312 is arranged in the track body 311 and matches the moving assembly 32 .

[0040] Connecting blocks 313 are detachably connected to the two opposing mounting rods 22 via bolts. The connecting blocks 313 are detachably connected to the corresponding mounting rods 22 at the joints of the two track bodies 311. Multiple bolt holes are provided on the connecting blocks 313 and the track bodies 311. During use, the track bodies 311 and the connecting blocks 313 can be bolted to the mounting rods 22. Furthermore, by changing the size of the connecting blocks 313, the track assembly 31 can be adapted to the outer dimensions of the clasping mechanism 2.

[0041] Furthermore, the moving assembly 32 includes multiple pulleys 321, gear parts 322 and a moving plate 323; multiple pulleys 321 are arranged on both sides of the track body 311, for clamping the track body 311 and assisting in movement; the gear part 322 is arranged on the inner side of the track body 311 and engages with the gear condition 312; the moving plate 323 is installed above the pulley 321 and the gear part 322, for installing the telescopic part 33.

[0042] A motor is connected between the movable plate 323 and the gear member 322, and the motor's output shaft is connected to the gear member 322. Two clamping blocks 324 are also provided at the bottom of the movable plate 323, corresponding to the pulley 321. The two clamping blocks 324 respectively clamp onto the inner and outer sides of the track body 311, providing appropriate sliding friction and ensuring the stability of the movable assembly 32 during operation.

[0043] The working principle of the adjustment mechanism 3 in this embodiment is as follows: when in use, the motor is started to drive the gear part 322 to rotate, and the gear part 322 cooperates with the gear condition 312 to make the movable plate 323 move along the track of the track body 311, and then the orientation of the detection mechanism 4 can be adjusted by changing the position of the movable plate 323 to realize the detection of multi-range welds.

[0044] Example 3 On the basis of the first embodiment, in order to improve the accuracy of detection, the metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures in the present invention is further provided with a detection mechanism 4 .

[0045] Specifically, the detection assembly includes a mounting seat 41, an adjustment member 42 and a detection body 43; the mounting seat 41 is installed at the telescopic end of the telescopic member 33; the adjustment member 42 is set on the mounting seat 41 to adjust the height of the mounting seat 41; the detection body 43 is installed on the adjustment member 42 to adjust the angle of the magnetic memory probe 1.

[0046] Furthermore, the adjusting member 42 includes a lifting screw 421, a lifting cylinder 423 and an outer sleeve 422; the lifting screw 421 is installed on the mounting seat 41; the lifting cylinder 423 is sleeved on the outside of the lifting screw 421 and cooperates with the lifting screw 421, the outer sleeve 422 is sleeved on the outside of the lifting cylinder 423 and is slidably connected to the lifting cylinder 423, and the outer sleeve 422 is connected to the mounting seat 41 by bolts. When the micro motor drives the lifting screw 421 to rotate, the lifting cylinder 423 can move linearly along the length direction of the lifting screw 421, thereby changing the height of the detection body 43, which is used to fine-tune the height of the magnetic memory probe 1.

[0047] Furthermore, the detection body 43 includes a gear set 431 and a reversing set 432; the gear set 431 is installed at the top of the outer sleeve 422 and is connected to the magnetic memory probe 1 through a rotating shaft, which is used to rotate the magnetic memory probe 1 360°; the reversing set 432 is arranged between the rotating shaft and the magnetic memory probe 1, which is used to rotate the magnetic memory probe 1 180°.

[0048] The working principle of the lifting mechanism in this embodiment is as follows: when in use, the motor drives the lifting screw 421 to rotate, and the lifting cylinder 423 can lift and lower the detection body 43 through the threaded cooperation between the lifting cylinder 423 and the lifting screw 421, and then fine-tune the height of the magnetic memory probe 1 according to the different positions of the weld in the detection area. The motor can also drive the gear group 431 to rotate, and then change the angle of the magnetic memory probe 1 through gear transmission, and rotate the magnetic memory probe 1 to another direction through the reversing group 432, so that the magnetic memory probe 1 can perform multi-directional and multi-angle detection.

[0049] Example 4 The fourth embodiment provides a detection method of the metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures as described in the third embodiment.

[0050] Furthermore, the specific method for detecting welds at beam-column joints of steel structures includes the following steps: S1: Move the magnetic memory probe 1 to the corresponding height of the weld on the I-beam 5 through the holding mechanism 2; start the driving component 212 to drive the roller 217 to move along the height direction of the I-beam 5 column, thereby driving the magnetic memory probe 1 to move.

[0051] S2: Use the adjustment mechanism 3 to move the magnetic memory probe 1 to different quadrants for detection; drive the gear member 322 to rotate, so that the moving plate 323 moves along the track body, thereby changing the orientation of the magnetic memory probe 1.

[0052] S3: Use the telescopic member 33 to move the magnetic memory probe 1 in a straight line to detect welds in different ranges on the I-beam 5; control the telescopic amount of the telescopic member 33, and then use the magnetic memory probe 1 to detect welds along the length direction of the beam.

[0053] S4: Use the adjustment member 42 to move the magnetic memory probe 1 vertically to detect the welds at different heights of the I-beam 5; drive the lifting screw 421 to rotate, and then the lifting cylinder 423 extends and retracts in the outer sleeve 422 to change the height of the magnetic memory probe 1.

[0054] S5: Use the detection body 43 to change the angle of the magnetic memory probe 1 to expand the detection range.

[0055] Specific application cases A metal magnetic memory detection device for detecting welds at the nodes of steel structure beams and columns is used in the field of construction engineering inspection to perform weld quality inspection on the main steel structures such as high-rise buildings and large commercial complexes. It can also be used to inspect industrial plants, heavy machinery manufacturing workshops, chemical plants and other places where a large number of portal steel frames are used to ensure structural safety and stability.

[0056] The present application provides a metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures. When the device is used, the specific operation process is as follows: Confirm the cross-sectional dimensions of the I-beam 5 to be inspected and select the appropriate configuration of the clamp mechanism 2. Encircle the I-beam 5 with the clamp mechanism 2 and adjust the securing assembly 23 to an appropriate degree of tightness to ensure the device is securely fixed to the I-beam 5. Connect the inspection mechanism 4 and the magnetic memory probe 1 thereon. Turn on the power of the device and input or adjust the detection parameters as needed; use the adjustment mechanism 3 to preliminarily position the magnetic memory probe 1 to the expected starting detection position; By controlling the driving assembly 212 of the holding mechanism 2, the moving assembly 32 moves up and down along the I-beam 5, bringing the magnetic memory probe 1 to a specified height; using the track assembly 31 and the moving assembly 32 of the adjusting mechanism 3, the probe position is adjusted so that it covers all weld areas that need to be inspected; and operating the inspection mechanism 4, the angle and height of the magnetic memory probe 1 are fine-tuned to ensure close contact with the weld surface. Start the magnetic memory detection program, record and analyze the data; identify potential structural defects such as stress concentration, cracks, premature yielding and other problems based on the collected data.

[0057] In summary, although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A metal magnetic memory detection device for detecting welds at beam-column nodes of steel structures, comprising a magnetic memory probe (1) for detecting welds of I-beams (5); characterized in that: Also includes A gripping mechanism (2) is detachably connected to the I-beam (5) and is used to move the magnetic memory probe (1) to a detection height; An adjustment mechanism (3) is detachably connected to the holding mechanism (2) and is used to move the magnetic memory probe (1) to different detection quadrants to achieve multi-directional detection; The detection mechanism (4) is arranged on the adjustment mechanism (3) and connected to the magnetic memory probe (1), and is used to fine-tune the angle and height of the magnetic memory probe (1).

2. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 1, characterized in that: The holding mechanism (2) comprises: Two displacement components (21) are arranged in parallel up and down, and are used to surround the I-beam (5) and move up and down; A plurality of mounting rods (22) for connecting the two displacement assemblies (21) and connecting the adjustment mechanism (3); Two stabilizing components (23) are symmetrically arranged on the inner sides of two opposite mounting rods (22) and are used to stably support the metal magnetic memory detection device on the I-beam (5).

3. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 2, characterized in that: The displacement assembly (21) comprises: A plurality of connecting rods (211) are connected to each other to form a square structure; A driving assembly (212) is provided on the inner side of one of the connecting rods (211) and is used to provide power for up and down movement; A plurality of rolling elements (216) are respectively arranged on other connecting rods (211); The buffer member (213) is arranged on the connecting rod (211) opposite to the driving assembly (212) and is connected to the corresponding rolling member (216).

4. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 3, characterized in that: The displacement assembly (21) further comprises: A plurality of first fixing blocks (214) for connecting two adjacent connecting rods (211); A plurality of second fixing blocks (215) are used to connect the connecting rod (211) and the corresponding mounting rod (22).

5. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 2, characterized in that: The regulating mechanism (3) comprises: Two track assemblies (31) with a C-shaped structure are symmetrically arranged on two opposite mounting rods (22); Two moving assemblies (32) are arranged on the track assembly (31) and are used to adjust the quadrants of the magnetic memory probe (1); The telescopic member (33) is arranged on the moving assembly (32) and is installed with the detection mechanism (4), and is used to adjust the position of the magnetic memory probe (1).

6. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 4, characterized in that: The track assembly (31) comprises: The track body (311) has a C-shaped structure and is connected to the mounting rod (22) via a connecting block (313); The tooth condition (312) is arranged in the track body (311) and matches the moving component (32).

7. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 6, characterized in that: The mobile assembly (32) comprises: A plurality of pulleys (321) are arranged on both sides of the track body (311) and are used to clamp the track body (311) and assist in movement; A gear member (322) is disposed inside the track body (311) and meshes with the gear member (312); The movable plate (323) is mounted above the pulley (321) and the gear member (322) and is used for mounting the telescopic member (33).

8. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 7, characterized in that: The detection mechanism (4) comprises: A mounting seat (41) is mounted on the telescopic end of the telescopic member (33); An adjusting member (42) is provided on the mounting seat (41) to adjust the height of the mounting seat (41); The detection body (43) is mounted on the adjustment member (42) and is used to adjust the angle of the magnetic memory probe (1).

9. The metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to claim 8, characterized in that: The detection subject (43) includes: A gear set (431) is mounted on the top of the outer sleeve (422) and is connected to the magnetic memory probe (1) via a rotating shaft, and is used to rotate the magnetic memory probe (1) 360 degrees; The reversing group (432) is arranged between the rotating shaft and the magnetic memory probe (1) and is used to rotate the magnetic memory probe (1) 180 degrees.

10. The detection method of the metal magnetic memory detection device for detecting welds at beam-column joints of steel structures according to any one of claims 1 to 9, characterized in that: The following steps are included: S1: Move the magnetic memory probe (1) to the corresponding height of the weld on the I-beam (5) through the holding mechanism (2); S2: using the adjustment mechanism (3) to move the magnetic memory probe (1) to different quadrants for detection; S3: Using the telescopic member (33) to move the magnetic memory probe (1) in a straight line to detect welds in different ranges on the I-beam (5); S4: Use the adjustment member (42) to vertically move the magnetic memory probe (1) to detect the welds at different heights of the I-beam (5); S5: Use the detection body (43) to change the angle of the magnetic memory probe (1) to expand the detection range.

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