Steel structure welding quality detection device

Abstract

A steel structure welding quality detection device disclosed by the present invention comprises a machine base and a welding steel structure placed at the top of the machine base, the top of the machine base is provided with a detection structure through a transmission structure, and the detection structure can strike the welding steel structure and collect and detect the reflection characteristics of the welding steel structure. The transmission structure can drive the detection structure to change the detection displacement and improve the detection efficiency, the detection structure comprises a connecting plate installed at the top of the machine base through the transmission structure, a beating assembly is arranged at the bottom of the connecting plate, and a vibration receiving module located on the inner side of the supporting plate is fixedly connected to the bottom of the connecting plate. And the bottom of the vibration receiving module is in contact with the surface of the welding steel structure. According to the device, the welded steel structure can be hit, the reflection characteristics of the welded steel structure can be collected and detected, automatic detection of the welding quality of the steel structure is achieved, the detection efficiency and accuracy are improved, and errors and labor intensity of manual detection are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of steel structure welding detection, in particular to a steel structure welding quality detection device. Background Art

[0002] Weld inspection is a key link in ensuring the quality and safety of welded joints. A series of technical means are used to detect whether there are defects in the weld. The main purpose of weld inspection is to find defects in the weld, such as cracks, pores, slag inclusions, etc., to ensure the integrity and safety of the welded structure. Through inspection, defects can be discovered and repaired in time to avoid safety accidents caused by welding quality problems. The propagation and reflection characteristics of impact vibration in the weld are used to detect changes in vibration signals to determine whether there are defects inside the weld. This method is suitable for internal defect detection of welds of various metal materials, such as pores, slag inclusions, cracks, etc.

[0003] For example, the patent application number disclosed on the China Patent Network is: 202110216871.7, and the patent name is: Welding quality detection system and ultrasonic welding equipment, welding quality detection method, control module, computer-readable storage medium, the welding quality detection system includes a detection module, a control module and a display module, the detection module is used to collect the lateral friction force and longitudinal welding pressure of the welding workpiece; the control module is electrically connected to the detection module, and the control module is used to receive and analyze and process the lateral friction force signal and longitudinal pressure signal of the detection module; the display module is electrically connected to the control module, and the display module is used to display the analysis results of the control module. The present invention can effectively detect the welding quality of the welding workpiece and detect welding defects in time.

[0004] However, the existing welding quality inspection methods are relatively simple, mainly providing the reflection characteristics of vibration knocking through manual knocking. The force during the manual knocking process cannot be unified, which causes the vibration signal to easily change abnormally, affecting the detection accuracy. The manual knocking detection method requires a lot of manpower and time, and the operating efficiency is low.

[0005] Therefore, it is necessary to redesign the steel structure welding quality inspection device. Summary of the invention

[0006] In order to solve the problems raised in the above-mentioned background technology, the purpose of the present invention is to provide a steel structure welding quality inspection device, which has the advantage of improving the inspection efficiency and solves the problem that the existing welding quality inspection method is relatively single, mainly providing the reflection characteristics of vibration knocking by manual knocking, and the force during the manual knocking process cannot be unified, which causes the vibration signal to easily change abnormally, affecting the inspection accuracy. The manual knocking detection method requires a lot of manpower and time, and the operating efficiency is low.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a steel structure welding quality detection device, comprising a machine base; A welded steel structure placed on top of the machine base; A detection structure is installed on the top of the machine base through a transmission structure. The detection structure can strike the welded steel structure and collect and detect its reflection characteristics. The transmission structure can drive the detection structure to change the detection displacement and improve the detection efficiency. The detection structure includes a connecting plate installed on the top of the machine base through a transmission structure, and a striking assembly is provided at the bottom of the connecting plate. The bottom of the connecting plate is fixedly connected to a vibration receiving module located on the inner side of a support plate, and the bottom of the vibration receiving module is in contact with the surface of the welded steel structure.

[0008] As a preferred embodiment of the present invention, the transmission structure includes vertical plates fixedly connected to both sides of the top of the machine base, the inner side of the vertical plates is movably connected with a reciprocating screw through a bearing, one side of the vertical plate is fixedly connected with a transmission motor, the output end of the transmission motor is fixedly connected to one end of the reciprocating screw, the surface of the reciprocating screw is threadedly connected with a screw sleeve, the side of the screw sleeve away from the reciprocating screw is fixedly connected to the surface of the connecting plate, the surface of the vertical plate is fixedly connected with a linkage structure, and the linkage structure can push the striking assembly to swing back and forth and use the inner striking block to strike the welded steel structure during the movement of the transmission structure carrying the detection structure.

[0009] As a preferred embodiment of the present invention, a guide rod located at the bottom of the reciprocating screw is fixedly connected to the inner side of the vertical plate, and the screw sleeve is sleeved on the surface of the guide rod.

[0010] As a preferred embodiment of the present invention, the striking assembly includes connecting blocks fixedly connected to the four corners of the bottom of the connecting plate, the inner side of the connecting block is movably connected with an axis rod through a bearing, the surface of the axis rod is fixedly connected to a support plate sleeved on the outer side of the connecting block, the inner side of the support plate is fixedly connected to a striking block, and the inner side of the striking block is in contact with the surface of the welded steel structure.

[0011] As a preferred embodiment of the present invention, the linkage structure includes a force-bearing rod fixedly connected to both ends of the shaft rod, the outer side of the vertical plate is fixedly connected to a bracket, the inner side of the bracket is fixedly connected to a linkage plate located on the front side of the guide rod, both sides of the linkage plate are fixedly connected to trapezoidal blocks, both sides of the trapezoidal blocks are arranged in an inclined state, one end of the force-bearing rod away from the shaft rod extends to the outer side of the linkage plate and is slidably connected to the trapezoidal block, and the force-bearing rod contacts the inclined surface of the trapezoidal block during the horizontal movement of the connecting plate and is squeezed by the inclined surface to carry the support plate to swing inward.

[0012] As a preferred embodiment of the present invention, a movable block is fixedly connected to the surface of the support plate, and a rocker arm is movably connected to the surface of the movable block via a pin shaft. The rocker arm extends to the top of the welded steel structure from a side away from the movable block and is fixedly connected to a glue stick, and the glue stick can hit the welded steel structure when the rocker arm swings.

[0013] As a preferred embodiment of the present invention, the surface of the support plate is movably connected to a roller via a bearing, the outer surface of the roller is in contact with the top of the machine base, the front of the roller is fixedly connected to a rotating wheel, the surface of the rotating wheel is fixedly connected to a sliding rod located inside the rocker arm, and the sliding rod is slidably connected to the rocker arm.

[0014] As a preferred embodiment of the present invention, both sides of the vibration receiving module are fixedly connected with spring plates, a side of the spring plate away from the vibration receiving module is in contact with an inner side of the support plate, and the spring plate is elastic.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention can strike the welded steel structure and collect and detect its reflection characteristics, thereby realizing the automated detection of the welding quality of the steel structure, improving the detection efficiency and accuracy, and reducing the error and labor intensity of manual detection.

[0016] 2. The present invention sets a vertical plate, a reciprocating screw, a transmission motor, a screw sleeve and a linkage structure. The transmission motor drives the reciprocating screw to rotate, and the screw sleeve moves on the reciprocating screw, thereby driving the connecting plate and the detection structure to move. The linkage structure pushes the striking assembly to swing back and forth during the transmission process to strike the welded steel structure. It can accurately control the movement and striking force of the detection structure to ensure the stability and reliability of the detection results.

[0017] 3. The present invention fixes a connecting guide rod on the inner side of the vertical plate, and the screw sleeve is sleeved on the surface of the guide rod. The design of the guide rod increases the stability of the screw sleeve movement and prevents the screw sleeve from deflecting or shaking during movement, thereby improving the movement accuracy and stability of the detection structure.

[0018] 4. The present invention provides a connecting block, an axle rod, a support plate and a striking block. The striking block contacts the surface of the welded steel structure and generates a vibration signal by striking. The welded steel structure can be struck accurately to generate a clear vibration signal, which is convenient for subsequent evaluation and analysis of the welding quality.

[0019] 5. The present invention arranges a force-bearing rod, a bracket, a linkage plate, and a trapezoidal block. When the force-bearing rod moves with the connecting plate, it contacts and is squeezed by the inclined surface of the trapezoidal block, thereby pushing the supporting plate to swing inward. The movement of the connecting plate can be cleverly used to drive the swing of the striking assembly, thereby realizing the automation and precise control of the striking action.

[0020] 6. The present invention fixes and connects the movable block and the rocker arm on the surface of the support plate. The rocker arm extends to the top of the welded steel structure and is fixedly connected to the glue stick. The design of the rocker arm and the glue stick increases the striking area and strength of the welded steel structure, improves the accuracy and reliability of the detection results, and at the same time, the use of the glue stick can also reduce the damage to the surface of the welded steel structure.

[0021] 7. The present invention movably connects the roller and the rotating wheel through the bearing. The roller contacts the top of the machine base. The surface of the rotating wheel is fixedly connected to the sliding rod and the swing rod for sliding connection. The design of the roller and the rotating wheel makes the support plate more stable and flexible during movement, reducing the friction and resistance between the support plate and the machine base. At the same time, the sliding connection between the sliding rod and the swing rod also increases the stability and controllability of the swing of the swing rod.

[0022] 8. The present invention can buffer the vibration and impact force generated during the striking process by fixing the spring plates on both sides of the vibration receiving module, thereby protecting the vibration receiving module from damage. At the same time, the elasticity of the spring plates can also better transmit and receive vibration signals, thereby improving the accuracy and sensitivity of the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 It is a schematic diagram of the main structure of the present invention; Figure 3 It is a schematic diagram of the local structure of the present invention; Figure 4 It is a schematic diagram of the detection structure of the present invention; Figure 5 It is a schematic diagram of the swing rod structure of the present invention; Figure 6 For the present invention Figure 3 Enlarged structural diagram at A in the middle.

[0024] In the figure: 1. base; 2. welded steel structure; 3. transmission structure; 4. detection structure; 5. connecting plate; 6. striking assembly; 7. vibration receiving module; 8. vertical plate; 9. reciprocating screw; 10. transmission motor; 11. screw sleeve; 12. linkage structure; 13. guide rod; 14. connecting block; 15. shaft rod; 16. support plate; 17. striking block; 18. force rod; 19. bracket; 20. linkage plate; 21. trapezoidal block; 22. movable block; 23. rocker; 24. glue stick; 25. roller; 26. rotating wheel; 27. slide rod; 28. spring plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] like Figures 1 to 6 As shown, a steel structure welding quality detection device provided by the present invention includes a machine base 1; A welded steel structure 2 placed on top of the machine base 1; A detection structure 4 is installed on the top of the base 1 through a transmission structure 3. The detection structure 4 can strike the welded steel structure 2 and collect and detect its reflection characteristics. The transmission structure 3 can drive the detection structure 4 to change the detection displacement and improve the detection efficiency. The detection structure 4 includes a connecting plate 5 installed on the top of the base 1 through the transmission structure 3. A striking component 6 is provided at the bottom of the connecting plate 5. The bottom of the connecting plate 5 is fixedly connected to a vibration receiving module 7 located on the inner side of the support plate 16, and the bottom of the vibration receiving module 7 is in contact with the surface of the welded steel structure 2.

[0027] refer to Figure 4 The transmission structure 3 includes a vertical plate 8 fixedly connected to both sides of the top of the machine base 1, and a reciprocating screw 9 is movably connected to the inner side of the vertical plate 8 through a bearing. A transmission motor 10 is fixedly connected to one side of the vertical plate 8, and the output end of the transmission motor 10 is fixedly connected to one end of the reciprocating screw 9. A screw sleeve 11 is threadedly connected to the surface of the reciprocating screw 9, and the side of the screw sleeve 11 away from the reciprocating screw 9 is fixedly connected to the surface of the connecting plate 5. A linkage structure 12 is fixedly connected to the surface of the vertical plate 8. The linkage structure 12 can push the striking assembly 6 to swing back and forth during the movement of the transmission structure 3 carrying the detection structure 4 and use the inner striking block 17 to strike the welded steel structure 2.

[0028] As a technical optimization scheme of the present invention, by setting a vertical plate 8, a reciprocating screw 9, a transmission motor 10, a screw sleeve 11 and a linkage structure 12, the transmission motor 10 drives the reciprocating screw 9 to rotate, and the screw sleeve 11 moves on the reciprocating screw 9, thereby driving the connecting plate 5 and the detection structure 4 to move. The linkage structure 12 pushes the striking assembly 6 to swing back and forth during the transmission process to strike the welded steel structure 2, which can accurately control the movement and striking force of the detection structure 4 to ensure the stability and reliability of the detection results.

[0029] refer to Figure 2 A guide rod 13 located at the bottom of the reciprocating screw 9 is fixedly connected to the inner side of the vertical plate 8 , and the screw sleeve 11 is sleeved on the surface of the guide rod 13 .

[0030] As a technical optimization solution of the present invention, by fixing the connecting guide rod 13 on the inner side of the vertical plate 8, the screw sleeve 11 is sleeved on the surface of the guide rod 13. The design of the guide rod 13 increases the stability of the movement of the screw sleeve 11 and prevents the screw sleeve 11 from shifting or shaking during the movement, thereby improving the movement accuracy and stability of the detection structure 4.

[0031] refer to Figure 4 The striking assembly 6 includes a connecting block 14 fixedly connected to the four corners of the bottom of the connecting plate 5, and the inner side of the connecting block 14 is movably connected to a shaft rod 15 through a bearing. The surface of the shaft rod 15 is fixedly connected to a support plate 16 sleeved on the outer side of the connecting block 14, and the inner side of the support plate 16 is fixedly connected to a striking block 17, and the inner side of the striking block 17 contacts the surface of the welded steel structure 2.

[0032] As a technical optimization solution of the present invention, by setting a connecting block 14, an axis rod 15, a support plate 16 and a striking block 17, the striking block 17 contacts the surface of the welded steel structure 2, and generates a vibration signal by striking. The welded steel structure 2 can be struck accurately to generate a clear vibration signal, which is convenient for subsequent evaluation and analysis of the welding quality.

[0033] refer to Figure 5 The linkage structure 12 includes a force-bearing rod 18 fixedly connected to both ends of the shaft 15, a bracket 19 fixedly connected to the outer side of the vertical plate 8, and a linkage plate 20 located on the front side of the guide rod 13 fixedly connected to the inner side of the bracket 19. Trapezoidal blocks 21 are fixedly connected to both sides of the linkage plate 20, and both sides of the trapezoidal block 21 are arranged to be inclined. One end of the force-bearing rod 18 away from the shaft 15 extends to the outer side of the linkage plate 20 and is slidably connected to the trapezoidal block 21. During the horizontal movement of the force-bearing rod 18 following the connecting plate 5, it contacts the inclined surface of the trapezoidal block 21 and is squeezed by the inclined surface to carry the support plate 16 to swing inward.

[0034] As a technical optimization solution of the present invention, by setting a force-bearing rod 18, a bracket 19, a linkage plate 20, and a trapezoidal block 21, the force-bearing rod 18 contacts and is squeezed by the inclined surface of the trapezoidal block 21 when following the movement of the connecting plate 5, thereby pushing the support plate 16 to swing inward, and can cleverly use the movement of the connecting plate 5 to drive the swing of the striking component 6, thereby realizing the automation and precise control of the striking action.

[0035] refer to Figure 5 A movable block 22 is fixedly connected to the surface of the support plate 16, and a swing rod 23 is movably connected to the surface of the movable block 22 through a pin shaft. The swing rod 23 extends from one side of the movable block 22 to the top of the welded steel structure 2 and is fixedly connected to a glue stick 24. The glue stick 24 can hit the welded steel structure 2 when the swing rod 23 swings.

[0036] As a technical optimization solution of the present invention, the movable block 22 and the rocker arm 23 are fixedly connected on the surface of the support plate 16, the rocker arm 23 extends to the top of the welded steel structure 2 and is fixedly connected to the glue stick 24. The design of the rocker arm 23 and the glue stick 24 increases the striking area and force on the welded steel structure 2, and improves the accuracy and reliability of the detection results. At the same time, the use of the glue stick 24 can also reduce the damage to the surface of the welded steel structure 2.

[0037] refer to Figure 5 The surface of the support plate 16 is movably connected to a roller 25 through a bearing, the outer surface of the roller 25 contacts the top of the base 1, the front of the roller 25 is fixedly connected to a rotating wheel 26, the surface of the rotating wheel 26 is fixedly connected to a sliding rod 27 located inside the rocker 23, and the sliding rod 27 is slidably connected to the rocker 23.

[0038] As a technical optimization solution of the present invention, the roller 25 and the rotating wheel 26 are movably connected by bearings, the roller 25 contacts the top of the base 1, and the surface of the rotating wheel 26 is fixedly connected to the slide bar 27 which is slidably connected to the rocker arm 23. The design of the roller 25 and the rotating wheel 26 makes the support plate 16 more stable and flexible during movement, reducing the friction and resistance between the support plate 1 and the base 1. At the same time, the sliding connection between the slide bar 27 and the rocker arm 23 also increases the stability and controllability of the swing of the rocker arm 23.

[0039] refer to Figure 4 Both sides of the vibration receiving module 7 are fixedly connected with spring plates 28 , and the side of the spring plate 28 away from the vibration receiving module 7 is in contact with the inner side of the support plate 16 , and the spring plate 28 is elastic.

[0040] As a technical optimization solution of the present invention, by fixing the spring plate 28 on both sides of the vibration receiving module 7, the vibration and impact force generated during the striking process can be buffered, and the vibration receiving module 7 can be protected from damage. At the same time, the elasticity of the spring plate 28 can also better transmit and receive vibration signals, thereby improving the accuracy and sensitivity of the detection results.

[0041] The working principle and use process of the present invention are as follows: the welded steel structure 2 to be inspected is placed on the top of the machine base 1 , which is the supporting foundation of the entire inspection device, and the transmission motor 10 is started. The transmission motor 10 is fixedly connected to one side of the vertical plate 8 on both sides of the top of the machine base 1, and its output end is fixedly connected to one end of the reciprocating screw 9. When the transmission motor 10 is working, it will drive the reciprocating screw 9 to rotate flexibly on the inner side of the vertical plate 8 through the bearing. The surface of the reciprocating screw 9 is threadedly connected with a screw sleeve 11, and the side of the screw sleeve 11 away from the reciprocating screw 9 is fixedly connected to the surface of the connecting plate 5. Therefore, with the rotation of the reciprocating screw 9, the screw sleeve 11 will reciprocate along the surface of the reciprocating screw 9. At the same time, the inner side of the vertical plate 8 is also fixedly connected with a guide rod 13 located at the bottom of the reciprocating screw 9, and the screw sleeve 11 is also sleeved on the surface of the guide rod 13, which ensures the stability of the screw sleeve 11 during the movement. The reciprocating movement of the screw sleeve 11 drives the horizontal movement of the connecting plate 5, and the bottom of the connecting plate 5 is provided with a striking component 6 and a vibration receiving module 7. When the connecting plate 5 moves, the striking component 6 will also move accordingly. During the movement of the connecting plate 5, the linkage structure 12 begins to play a role. When the force rod When 18 follows the connecting plate 5 to move horizontally, it will contact and be squeezed by the inclined surface of the trapezoidal block 21, thereby carrying the support plate 16 to swing inward, so that the inner side of the striking block 17 contacts and strikes the surface of the welded steel structure 2. The vibration receiving module 7 is located on the inner side of the support plate 16, and its bottom contacts the surface of the welded steel structure 2. When the striking block 17 strikes the welded steel structure 2, the welded steel structure 2 will generate vibrations, which will be collected and detected by the vibration receiving module 7. The surface of the support plate 16 is also movably connected to a roller 25 through a bearing. The outer surface of the roller 25 contacts the top of the machine base 1. The front of the roller 25 is fixedly connected to a rotating wheel 26. The surface of the rotating wheel 26 is fixedly connected to a sliding rod 27 located inside the swing rod 23. The sliding rod 27 is slidably connected to the swing rod 23. During the swinging of the striking component 6, the swing rod 23 will also swing following the sliding rod 27. The glue stick 24 will further strike the welded steel structure 2 when the swing rod 23 swings, thereby enhancing the detection effect.

[0042] In summary: the steel structure welding quality detection device realizes the automated detection of the steel structure welding quality by striking the welded steel structure 2 and collecting and detecting its reflection characteristics, thereby improving the detection efficiency and accuracy and reducing the error and labor intensity of manual detection.

[0043] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0044] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel structure welding quality detection device, comprising a machine base (1); A welded steel structure (2) placed on top of the machine base (1); Features: A detection structure (4) is installed on the top of the machine base (1) via a transmission structure (3); the detection structure (4) is capable of striking the welded steel structure (2) and collecting and detecting its reflection characteristics; the transmission structure (3) is capable of driving the detection structure (4) to change the detection displacement, thereby improving the detection efficiency; the detection structure (4) comprises a connecting plate (5) installed on the top of the machine base (1) via the transmission structure (3); a striking assembly (6) is arranged at the bottom of the connecting plate (5); a vibration receiving module (7) located on the inner side of the support plate (16) is fixedly connected to the bottom of the connecting plate (5); the bottom of the vibration receiving module (7) is in contact with the surface of the welded steel structure (2).

2. A steel structure welding quality detection device according to claim 1, characterized in that: The transmission structure (3) comprises a vertical plate (8) fixedly connected to both sides of the top of the machine base (1); the inner side of the vertical plate (8) is movably connected to a reciprocating screw (9) via a bearing; one side of the vertical plate (8) is fixedly connected to a transmission motor (10); the output end of the transmission motor (10) is fixedly connected to one end of the reciprocating screw (9); the surface of the reciprocating screw (9) is threadedly connected to a screw sleeve (11); the side of the screw sleeve (11) away from the reciprocating screw (9) is fixedly connected to the surface of the connecting plate (5); the surface of the vertical plate (8) is fixedly connected to a linkage structure (12); the linkage structure (12) can push the striking assembly (6) to swing back and forth during the movement of the transmission structure (3) carrying the detection structure (4) and use the striking block (17) on the inside to strike the welded steel structure (2).

3. A steel structure welding quality detection device according to claim 2, characterized in that: A guide rod (13) located at the bottom of the reciprocating screw rod (9) is fixedly connected to the inner side of the vertical plate (8), and the screw sleeve (11) is sleeved on the surface of the guide rod (13).

4. A steel structure welding quality detection device according to claim 3, characterized in that: The striking assembly (6) comprises a connecting block (14) fixedly connected to the four corners of the bottom of the connecting plate (5); the inner side of the connecting block (14) is movably connected to a shaft (15) via a bearing; the surface of the shaft (15) is fixedly connected to a support plate (16) sleeved on the outer side of the connecting block (14); the inner side of the support plate (16) is fixedly connected to a striking block (17); the inner side of the striking block (17) is in contact with the surface of the welded steel structure (2).

5. A steel structure welding quality detection device according to claim 4, characterized in that: The linkage structure (12) comprises a force-bearing rod (18) fixedly connected to both ends of the shaft rod (15); a bracket (19) is fixedly connected to the outer side of the vertical plate (8); a linkage plate (20) located in front of the guide rod (13) is fixedly connected to the inner side of the bracket (19); both sides of the linkage plate (20) are fixedly connected to trapezoidal blocks (21); both sides of the trapezoidal blocks (21) are arranged to be inclined; one end of the force-bearing rod (18) away from the shaft rod (15) extends to the outer side of the linkage plate (20) and is slidably connected to the trapezoidal block (21); in the process of the force-bearing rod (18) following the horizontal movement of the connecting plate (5), it contacts the inclined surface of the trapezoidal block (21) and is squeezed by the inclined surface to carry the support plate (16) to swing inward.

6. A steel structure welding quality detection device according to claim 5, characterized in that: A movable block (22) is fixedly connected to the surface of the support plate (16), and a swing rod (23) is movably connected to the surface of the movable block (22) via a pin shaft. The swing rod (23) extends to the top of the welded steel structure (2) from a side away from the movable block (22) and is fixedly connected to a glue stick (24). The glue stick (24) can strike the welded steel structure (2) when the swing rod (23) swings.

7. A steel structure welding quality detection device according to claim 6, characterized in that: The surface of the support plate (16) is movably connected to a roller (25) via a bearing, the outer surface of the roller (25) contacts the top of the machine base (1), the front surface of the roller (25) is fixedly connected to a rotating wheel (26), the surface of the rotating wheel (26) is fixedly connected to a sliding rod (27) located inside the swing rod (23), and the sliding rod (27) is slidably connected to the swing rod (23).

8. A steel structure welding quality detection device according to claim 7, characterized in that: Both sides of the vibration receiving module (7) are fixedly connected with spring plates (28), and a side of the spring plate (28) away from the vibration receiving module (7) contacts the inner side of the support plate (16), and the spring plate (28) is elastic.

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