Steel structure welding seam detection device

Abstract

The utility model discloses a steel structure welding seam detection device which comprises a top plate, a detection probe, an impact hammer, a plate body, a bottom plate, a detection assembly, an adjusting assembly and a clamping assembly. The pair of plate bodies are connected between the top plate and the bottom plate in parallel, so that the top plate, the pair of plate bodies and the bottom plate enclose to form a detection frame; the pair of clamping assemblies is movably installed between the pair of plate bodies through the adjusting assemblies, so that the pair of clamping assemblies can be clamped on the two sides of the steel structure penetrating through the detection frame, and the welding seam is located between the pair of clamping assemblies. The detection probe and the impact hammer are arranged below the top plate in a lifting manner through the detection assembly, so that the impact hammer can be in impact contact with a welding seam, and the detection probe faces the welding seam. The utility model relates to the technical field of detection equipment, and can solve the problem that a steel structure welding seam detection device in the prior art needs manual cooperation for collision.

Description

Technical Field

[0001] The utility model relates to the technical field of detection equipment, in particular to a steel structure weld detection device. Background Art

[0002] Steel structures are widely used in high-rise residential buildings, factories and other building structures. As the span of building structures increases, steel components need to be welded and spliced. The structural strength of the welds at the joints of adjacent steel components determines the bearing capacity of the steel structure. Impact on the spliced ​​welds may cause internal cracks and affect the bearing capacity of the steel structure. Therefore, it is necessary to inspect the welds of steel structures and conduct post-impact inspections.

[0003] Chinese utility model patent CN220772995U discloses a steel structure weld detection device, including a base, a movable universal wheel is fixedly connected to the bottom of the base, an adjustment device and an ultrasonic detector are arranged on the top of the base, and a handle is fixedly connected to the right side of the base; the adjustment device includes an angle adjustment device 1, a telescopic adjustment device 1, an angle adjustment device 2, and a telescopic adjustment device 2, the angle adjustment device includes a fixed block 1, a fixed block 2, a threaded rod, and a nut, the bottoms of the fixed block 1 and the fixed block 2 are fixedly connected to the top of the base, and the telescopic adjustment device 2 includes a telescopic rod 1, the telescopic rod 1 is plugged into the inner wall of the movable cylinder 1, the front of the telescopic rod 1 is provided with a through hole 1, the front of the movable cylinder 1 is provided with a hole plugged with a pin 1, and the left side of the telescopic rod 1 is provided with a card interface. The detection device detects the steel structure weld by an ultrasonic detector, and requires manual cooperation to impact the steel structure weld, which is inconvenient to operate, and the impact force cannot be controlled, the labor intensity of the construction personnel is large, and the detection efficiency is reduced. Therefore, it is necessary to provide a steel structure weld detection device that can solve the problem that the steel structure weld detection device in the prior art requires manual cooperation to impact. Summary of the invention

[0004] The utility model aims to provide a steel structure weld detection device, which can solve the problem that the steel structure weld detection device in the prior art requires manual cooperation and collision.

[0005] The utility model is achieved in this way:

[0006] A steel structure weld detection device comprises a top plate, a detection probe, a hammer, a plate body, a bottom plate, a detection assembly, an adjustment assembly and a clamping assembly; a pair of plate bodies are connected in parallel between the top plate and the bottom plate, so that the top plate, the pair of plate bodies and the bottom plate are enclosed to form a detection frame; a pair of clamping assemblies are movably installed between the pair of plate bodies through the adjustment assembly, so that the pair of clamping assemblies can be clamped on both sides of the steel structure passing through the detection frame, and the weld is located between the pair of clamping assemblies; the detection probe and the hammer are liftably arranged below the top plate through the detection assembly, so that the hammer can impact and contact the weld, and the detection probe is arranged facing the weld.

[0007] The detection component includes a moving mechanism and a cylinder; the moving mechanism is installed on the top plate and is arranged along the direction of the weld; the two cylinders are movably arranged below the top plate through the moving mechanism, the piston rod of one cylinder extends between a pair of clamping assemblies and is connected to a detection probe, and the piston rod of the other cylinder extends between a pair of clamping assemblies and is connected to an impact hammer.

[0008] The moving mechanism includes a driving motor, a first slider and a screw rod; a first slide groove is formed on the bottom surface of the top plate, and the two ends of the screw rod are rotatably embedded in the first slide groove, and the first slide groove and the screw rod are both arranged along the direction of the weld; the driving motor is installed on the top plate, and the output shaft of the driving motor is inserted into the first slide groove and coaxially fixed with one end of the screw rod; the first slider is matched and embedded in the first slide groove, and a threaded through hole is formed in the first slider, and the first slider is screwed on the screw rod by thread matching, so that the first slider can be slidably arranged in the first slide groove; two cylinders are fixed at the bottom of the first slider.

[0009] The clamping assembly includes a U-shaped plate, a fixed clamp, a second screw and a second handle; the U-shaped plate is movably arranged on the bottom plate through an adjusting assembly so that the open end of the U-shaped plate can be placed on the edge of the steel structure; a threaded through hole is formed on the top of the U-shaped plate so that the second screw can be screwed through the top of the U-shaped plate through a threaded connection, the fixed clamp is arranged in the U-shaped plate and is fixedly connected to the lower end of the second screw so that the fixed clamp can be pressed against the steel structure, and the second handle is arranged at the upper end of the second screw.

[0010] A vertical third slide groove is formed on the inner wall of the side plate of the U-shaped plate, and the third slider is slidably embedded in the third slide groove; the lower end of the second screw is rotatably connected to the fixed clamping plate, and one end of the fixed clamping plate is fixedly connected to the third slider.

[0011] The adjustment assembly includes a first screw and a first handle; a threaded through hole is formed on the plate body, so that the first screw passes through the plate body through a threaded connection, one end of the first screw located inside the detection frame is rotatably connected to the outer wall of the side plate of the U-shaped plate, and the first handle is connected to the end of the first screw located outside the detection frame.

[0012] A second sliding block is formed at the bottom of the U-shaped plate, a second sliding groove is formed on the top surface of the bottom plate, the second sliding groove is perpendicular to the direction of the weld, and the second sliding block is slidably embedded in the second sliding groove.

[0013] The width of the bottom plate is greater than the width of the plate body, and mounting holes are formed at the corners of the bottom plate. The bottom plate is mounted and fixed through the mounting holes by means of mounting pieces.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] 1. The utility model is provided with a detection probe, an impact hammer and a detection component. The detection component is arranged along the direction of the weld and can drive the detection probe and the impact hammer to move along the direction of the weld, so as to perform accurate detection and impact detection on different positions of the weld. It is suitable for the detection of welds with longer lengths to avoid missed detection. At the same time, the detection component controls the lifting and lowering of the detection probe and the impact force of the impact hammer on the weld through air pressure, and does not require manual cooperation for impact. It can meet the weld detection needs under different impact forces, and has high detection accuracy and efficiency.

[0016] 2. The utility model is provided with an adjusting component and a clamping component. A pair of clamping components can adjust the spacing of the U-shaped plates through the adjusting components, and can be pressed against the two sides of steel structures of different widths. At the same time, through the downward pressure of the fixed clamping plate, the edges of steel structures of different thicknesses can be stably and reliably clamped, and the utility model has good adaptability and versatility to steel structures of different high specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a stereoscopic view from one side of the utility model of the steel structure weld impact detection device;

[0018] Figure 2 This is a stereoscopic view from another side of the utility model of the steel structure weld impact detection device;

[0019] Figure 3 It is a stereoscopic diagram of the detection component in the steel structure weld impact detection device of the utility model;

[0020] Figure 4 It is a stereoscopic diagram of a U-shaped plate in a steel structure weld impact detection device of the utility model.

[0021] In the figure, 101 is a detection component, 10 is a top plate, 11 is a fixed plate, 12 is a driving motor, 13 is a first slide groove, 14 is a first slider, 15 is a screw rod, 16 is a cylinder, 17 is a detection probe, 18 is an impact hammer, 201 is an adjustment component, 20 is a plate body, 21 is a first screw rod, 22 is a first handle, 23 is a second slide groove, 24 is a second slider, 25 is a U-shaped plate, 301 is a clamping component, 30 is a third slide groove, 31 is a third slider, 32 is a fixed splint, 33 is a second screw rod, 34 is a second handle, 40 is a bottom plate, and 41 is a mounting hole. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and specific embodiments.

[0023] Please see attached Figure 1 To Attachment Figure 3A steel structure weld impact detection device includes a top plate 10, a detection probe 17, a hammer 18, a plate body 20, a bottom plate 40, a detection component 101, an adjustment component 201 and a clamping component 301; a pair of plate bodies 20 are connected in parallel between the top plate 10 and the bottom plate 40, so that the top plate 10, the pair of plate bodies 20 and the bottom plate 40 are enclosed to form a detection frame; a pair of clamping components 301 are movably installed between the pair of plate bodies 20 through the adjustment component 201, so that the pair of clamping components 301 can be clamped on both sides of the steel structure passing through the detection frame, and the weld is located between the pair of clamping components 301; the detection probe 17 and the hammer 18 are liftably arranged below the top plate 10 through the detection component 101, so that the hammer 18 can impact and contact with the weld, and the detection probe 17 is arranged facing the weld.

[0024] Preferably, the top plate 10, a pair of plate bodies 20 and the bottom plate 40 can be made of thick steel plates and welded to form a rectangular detection frame with an integrated structure. The detection frame can be manufactured according to the size adaptability of the steel structure to ensure the through-setting of the steel structure, and the structure has high strength and is not easily damaged.

[0025] For long straight steel members, the welds are usually along the width direction of the steel members. The detection probe 17 and the impact hammer 18 are arranged along the weld direction through the detection assembly, that is, perpendicular to the penetration direction of the steel structure, so that the detection probe 17 can move along the weld direction and accurately detect welds in different directions, which is suitable for the detection of steel members with long welds. Before the detection, the steel structure weld can be hit by the impact hammer 18, and the weld of the steel member after the impact can be detected, which improves the detection detail and accuracy.

[0026] The position of the clamping assembly 301 can be adjusted by the adjusting assembly 201, so that the steel structure can be clamped from both sides by a pair of clamping assemblies 301 to ensure the stability of the steel structure during the collision and detection process, thereby ensuring the detection safety and detection accuracy.

[0027] Please see attached Figure 1 To Attachment Figure 3 The detection component 101 includes a moving mechanism and a cylinder 16; the moving mechanism is installed on the top plate 10, and the moving mechanism is arranged along the weld direction; the two cylinders 16 are movably arranged under the top plate 10 through the moving mechanism, the piston rod of one cylinder 16 extends between a pair of clamping components 301 and is connected to a detection probe 17, and the piston rod of the other cylinder 16 extends between a pair of clamping components 301 and is connected to an impact hammer 18.

[0028] When the two cylinders 16 are inflated and pressurized respectively, the heights of the detection probe 17 and the impact hammer 18 can be adjusted respectively. By controlling the uniform inflation and inflation amount of one of the cylinders 16, the distance between the detection probe 17 and the weld can be controlled, thereby ensuring accurate detection of the weld by the detection probe 17. Preferably, the detection probe 17 can adopt an ultrasonic detection probe of the prior art, or other forms of detection probes can be selected according to actual detection requirements.

[0029] By controlling the instantaneous inflation and inflation amount of another cylinder 16, the impact force of the impact hammer 18 on the weld can be controlled, thereby providing different impact forces for impact detection to meet different detection requirements. Preferably, the impact hammer 18 can be a spherical steel hammer, which has high structural strength, is not easy to deform and damage, and has a good impact effect.

[0030] The two cylinders 16 can be controlled by a computer controller of the prior art to ensure accurate control of the inflation speed and inflation amount.

[0031] Please see attached Figure 3 The moving mechanism includes a driving motor 12, a first slider 14 and a screw rod 15; a first slide groove 13 is formed on the bottom surface of the top plate 10, and both ends of the screw rod 15 are rotatably embedded in the first slide groove 13 through rotating bearings, and the first slide groove 13 and the screw rod 15 are both arranged along the weld direction; the driving motor 12 is installed on the top plate 10 through the fixing plate 11, and the output shaft of the driving motor 12 is inserted into the first slide groove 13 and is coaxially fixedly connected with one end of the screw rod 15; the first slider 14 is matched and embedded in the first slide groove 13, and a threaded through hole is formed in the first slider 14. The first slider 14 is screwed on the screw rod 15 through thread matching, so that the first slider 14 can be slidably arranged in the first slide groove 13; two cylinders 16 are fixed at the bottom of the first slider 14.

[0032] Preferably, the cross-section of the first slide groove 13 is rectangular, the first slider 14 is a rectangular block, and the two side walls of the first slider 14 are in sliding contact with the two side inner walls of the first slide groove 13, which can limit the rotation of the first slider 14 with the screw rod 15, so that the first slider 14 can only perform linear sliding motion along the first slide groove 13.

[0033] Preferably, the drive motor 12 can adopt a small motor that can rotate forward or reverse in the prior art. The drive motor 12 drives the screw rod 15 to rotate in the first slide groove 13. Since the rotation of the first slider 14 is limited, the rotation of the screw rod 15 is converted into a linear motion of the first slider 14 along the axial direction of the screw rod 15 by threaded transmission, thereby achieving the purpose of moving the two cylinders 16 along the first slide groove 13.

[0034] When installing the steel structure, the weld of the steel structure is arranged parallel to and directly below the first slide slot 13, so as to facilitate the detection of the weld by the detection probe 17 and the impact of the weld by the impact hammer 18. By driving the motor 12 in the forward and reverse directions, the moving direction or reciprocating movement of the detection probe 17 and the impact hammer 18 can be controlled.

[0035] Please see attached Figure 1 and attached Figure 2 The clamping assembly 301 includes a U-shaped plate 25, a fixed clamping plate 32, a second screw 33 and a second handle 34; the U-shaped plate 25 is movably arranged on the bottom plate 40 through the adjustment assembly 201, so that the open end of the U-shaped plate 25 can be placed on the edge of the steel structure; a threaded through hole is formed on the top of the U-shaped plate 25, so that the second screw 33 is screwed through the top of the U-shaped plate 25 by threading, the fixed clamping plate 32 is arranged in the U-shaped plate 25 and is fixedly connected to the lower end of the second screw 33, so that the fixed clamping plate 32 can be pressed on the steel structure, and the second handle 34 is arranged at the upper end of the second screw 33.

[0036] Preferably, the U-shaped plate 25 can be made of bent steel plate, and the height of the U-shaped plate 25 can be made according to the thickness of the edge of the steel structure to ensure good adaptability and versatility to the edges of steel structures of different specifications. Usually, the steel structure is a steel section such as a channel steel or an I-beam, and the opening of the U-shaped plate 25 can be sleeved on the upper wing plate of the steel section.

[0037] The second handle 34 is connected to the second screw rod 33 in a T-shaped structure, so that the second screw rod 33 can be easily rotated by the second handle 34, and the fixing clamping plate 32 is pushed downward by the screw thread of the second screw rod 33 and the screw thread through hole, so that the upper wing plate of the steel section is clamped between the fixing clamping plate 32 and the bottom plate of the U-shaped plate 25, and the upper wing plates of the steel section with different thicknesses can be stably and reliably clamped. The second screw rod 33 can be easily disassembled by rotating it in the opposite direction, and the operation is convenient and efficient.

[0038] Please see attached Figure 4 A vertical third slide groove 30 is formed on the inner wall of the side plate of the U-shaped plate 25, and the third slider 31 can be slidably embedded in the third slide groove 30; the lower end of the second screw rod 33 is rotatably connected to the fixed clamping plate 32 through a rotating bearing, and one end of the fixed clamping plate 32 is fixedly connected to the third slider 31.

[0039] Preferably, the third slide groove 30 is a vertically arranged groove body with a rectangular cross-section, and the cross-section of the third slider 31 is a rectangle matching the third slide groove 30, so that the third slider 31 can slide up and down along the third slide groove 30, which is used to limit the movement trajectory of the fixed splint 32 and prevent the fixed splint 32 from rotating with the second screw 33. The second screw 33 rotates relative to the fixed splint 32 through the rotating bearing, ensuring the linearity of the lifting and lowering of the fixed splint 32 and will not rotate and rub the surface of the steel structure.

[0040] Please see attached Figure 1 and attached Figure 2 The adjustment component 201 includes a first screw rod 21 and a first handle 22; a threaded through hole is formed on the plate body 20, so that the first screw rod 21 passes through the plate body 20 by threaded connection, and one end of the first screw rod 21 located in the detection frame is rotatably connected to the outer wall of the side plate of the U-shaped plate 25 through a rotating bearing, and the first handle 22 is connected to the end of the first screw rod 21 located outside the detection frame.

[0041] Preferably, the first screw 21 and the first handle 22 are connected in a T-shaped structure, so that the first screw 21 can be easily rotated through the first handle 22, and the U-shaped plate 25 can be pushed inward by rotating the first screw 21 and the threaded through hole. A pair of U-shaped plates 25 can be pushed synchronously and can be pressed against the steel structure from both sides, thereby ensuring the stability of the steel structure in the detection frame. The U-shaped plate 25 can be removed from the steel structure by rotating it in the opposite direction.

[0042] Please see attached Figure 1 and attached Figure 2 A second slider 24 is formed at the bottom of the U-shaped plate 25, and a second slide groove 23 is formed on the top surface of the bottom plate 40. The second slide groove 23 is perpendicular to the direction of the weld, and the second slider 24 can be slidably embedded in the second slide groove 23.

[0043] Preferably, the cross section of the second chute 23 is a rectangle, and the cross section of the second slider 24 is a rectangle matching the second chute 23, so as to ensure that the second slider 24 can move linearly along the second chute 23, thereby limiting the rotation of the U-shaped plate 25. At the same time, the second chute 23 is perpendicular to the weld direction, which can ensure that a pair of U-shaped plates 25 can stably and reliably clamp the steel structure on both sides of the weld, which is conducive to ensuring the accuracy of weld detection and impact detection.

[0044] Please see attached Figure 1 and attached Figure 2 The width of the bottom plate 40 is greater than the width of the plate body 20 , and mounting holes 41 are formed at the corners of the bottom plate 40 , and the bottom plate 40 is installed and fixed through the mounting holes 41 by means of mounting members.

[0045] Preferably, the mounting hole 41 can be a bolt hole, and the base plate 40 can be fixed on a work surface such as the ground by bolts of corresponding specifications to the mounting hole 41, thereby ensuring the stability of the entire device during use, making it difficult to shift or overturn, which is beneficial to improving detection safety and detection accuracy.

[0046] Please see attached Figure 1 To Attachment Figure 4 , the usage method and working principle of the utility model are:

[0047] The base plate 40 is fixed to the ground through four mounting holes 41 using four bolts and other mounting parts. A steel structure is passed through the base plate 40, a pair of plates 20 and a rectangular detection frame formed by the top plate 10, and the welds at the joints of adjacent steel components on the steel structure are located in the middle of the base plate 40.

[0048] Holding the first handle 22 and rotating the first screw 21, the U-shaped plate 25 is moved closer to the steel structure, and the opening of the U-shaped plate 25 is placed on the edge of the steel structure. At the same time, the second slider 24 slides along the second slide groove 23 to move the U-shaped plate 25 smoothly. The U-shaped plates 25 of the pair of clamping assemblies 301 move synchronously and abut against the edges of the steel structure from both sides.

[0049] Hold the second handle 34 and rotate the second screw 33 to move the fixing clamp 32 downward close to the steel structure, and clamp the fixing clamp 32 and the U-shaped plate 25 on the top and bottom of the edge of the steel structure respectively, so that the steel structure can stably penetrate the detection frame and ensure the stability of the weld position.

[0050] The cylinder 16 of the impact hammer 18 is pressurized so that the piston rod of the cylinder 16 quickly pushes the impact hammer 18 out to hit the steel structure weld downward, and the cylinder 16 is depressurized to reset the impact hammer 18 upward. The impact strength of the impact hammer 18 on the steel structure weld can be controlled by the pressurized pressure of the cylinder 16, thereby meeting the steel structure weld inspection requirements under different impact forces.

[0051] The cylinder 16 of the detection probe 17 is pressurized so that the piston rod of the cylinder 16 moves the detection probe 17 downward at a uniform speed to the detection height above the steel structure weld, thereby detecting the steel structure weld after the impact through the detection probe 17.

[0052] Start the drive motor 12 and drive the screw 15 to rotate, so that the first slider 14 moves linearly along the first slide groove 13 and the screw 15, thereby driving the detection probe 17 and the impact hammer 18 to move synchronously, and can move along the weld position to detect welds at different positions and welds after impact at different positions, thereby improving the detection accuracy and precision.

[0053] The above are only preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A steel structure weld detection device, characterized in that: The invention comprises a top plate (10), a detection probe (17), a striker (18), a plate body (20), a bottom plate (40), a detection assembly (101), an adjustment assembly (201) and a clamping assembly (301); a pair of plate bodies (20) are connected in parallel between the top plate (10) and the bottom plate (40), so that the top plate (10), the pair of plate bodies (20) and the bottom plate (40) are enclosed to form a detection frame; a pair of clamping assemblies (301) are movably installed between the pair of plate bodies (20) through the adjustment assembly (201), so that the pair of clamping assemblies (301) can be clamped on both sides of a steel structure passing through the detection frame, and the weld is located between the pair of clamping assemblies (301); the detection probe (17) and the striker (18) are liftably arranged below the top plate (10) through the detection assembly (101), so that the striker (18) can strike and contact the weld, and the detection probe (17) is arranged facing the weld.

2. The steel structure weld detection device according to claim 1 is characterized in that: The detection assembly (101) comprises a moving mechanism and a cylinder (16); the moving mechanism is mounted on the top plate (10) and is arranged along the direction of the weld; the two cylinders (16) are both movably arranged below the top plate (10) via the moving mechanism, the piston rod of one cylinder (16) extends between a pair of clamping assemblies (301) and is connected to a detection probe (17), and the piston rod of the other cylinder (16) extends between a pair of clamping assemblies (301) and is connected to a striker (18).

3. The steel structure weld detection device according to claim 2 is characterized in that: The moving mechanism comprises a driving motor (12), a first slider (14) and a screw rod (15); a first slide groove (13) is formed on the bottom surface of the top plate (10), and the two ends of the screw rod (15) are respectively rotatably embedded in the first slide groove (13), and the first slide groove (13) and the screw rod (15) are both arranged along the welding seam direction; the driving motor (12) is installed on the top plate (10), and the output shaft of the driving motor (12) is inserted into the first slide groove (13) and is coaxially fixedly connected with one end of the screw rod (15); the first slider (14) is matched and embedded in the first slide groove (13), and a threaded through hole is formed in the first slider (14). The first slider (14) is screwed on the screw rod (15) through thread matching, so that the first slider (14) can be slidably arranged in the first slide groove (13); two cylinders (16) are fixed at the bottom of the first slider (14).

4. The steel structure weld detection device according to claim 2 is characterized in that: The clamping assembly (301) comprises a U-shaped plate (25), a fixed clamping plate (32), a second screw rod (33) and a second handle (34); the U-shaped plate (25) is movably arranged on the bottom plate (40) through the adjusting assembly (201), so that the open end of the U-shaped plate (25) can be placed on the edge of the steel structure; a threaded through hole is formed on the top of the U-shaped plate (25), so that the second screw rod (33) can be screwed through the top of the U-shaped plate (25) through the threaded connection; the fixed clamping plate (32) is arranged in the U-shaped plate (25) and is fixedly connected to the lower end of the second screw rod (33), so that the fixed clamping plate (32) can be pressed against the steel structure; the second handle (34) is arranged at the upper end of the second screw rod (33).

5. The steel structure weld detection device according to claim 4 is characterized in that: A vertical third slide groove (30) is formed on the inner wall of the side plate of the U-shaped plate (25), and the third slider (31) can be slidably embedded in the third slide groove (30); the lower end of the second screw rod (33) is rotatably connected to the fixed clamping plate (32), and one end of the fixed clamping plate (32) is fixedly connected to the third slider (31).

6. The steel structure weld detection device according to claim 1 is characterized in that: The adjustment assembly (201) comprises a first screw rod (21) and a first handle (22); a threaded through hole is formed on the plate body (20), so that the first screw rod (21) can be screwed through the plate body (20) by threaded connection, one end of the first screw rod (21) located inside the detection frame is rotatably connected to the outer wall of the side plate of the U-shaped plate (25), and the first handle (22) is connected to the end of the first screw rod (21) located outside the detection frame.

7. The steel structure weld detection device according to claim 6 is characterized in that: A second sliding block (24) is formed at the bottom of the U-shaped plate (25), a second sliding groove (23) is formed on the top surface of the bottom plate (40), the second sliding groove (23) is perpendicular to the direction of the weld, and the second sliding block (24) can be slidably embedded in the second sliding groove (23).

8. The steel structure weld detection device according to claim 1 is characterized in that: The width of the bottom plate (40) is greater than the width of the plate body (20), and mounting holes (41) are formed at the corners of the bottom plate (40). The bottom plate (40) is mounted and fixed through the mounting holes (41) by means of mounting pieces.

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