Steel structure welding seam nondestructive testing auxiliary tool capable of accurately testing
By designing an adjustable ultrasonic testing head and an auxiliary tooling with a multi-point clamping device, the problem of testing head detachment or damage in steel structure weld inspection was solved, achieving accurate non-destructive testing and efficient automated testing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-01-14
- Publication Date
- 2026-03-24
AI Technical Summary
Existing auxiliary tooling for steel structure weld inspection cannot actively adjust the radial position of the ultrasonic testing head according to the irregularity of the steel structure surface, resulting in the testing head detaching from the weld surface or colliding hard, causing inspection interruption and probe damage.
An auxiliary tooling system including a control mechanism, a rotation mechanism, and a fixing mechanism was designed. The ultrasonic testing head is radially adjusted and circumferentially rotated by an electric telescopic rod and a motor-driven gear transmission, ensuring that the testing head fits tightly against the weld surface and is firmly fixed to the outside of the steel structure by a multi-point clamping and fixing device.
It achieves precise bonding of the ultrasonic testing head to irregular steel structure surfaces, avoids testing interruptions, improves testing efficiency and automation, and extends the probe's service life.
Smart Images
Figure CN121721145A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of steel structure weld detection, in particular to a steel structure weld nondestructive detection auxiliary tool capable of precise detection. BACKGROUND
[0002] Steel structure is a structure composed of steel materials, has the advantages of high strength, light weight, good overall rigidity and strong deformation capacity, and is widely used in large workshops, venues, super high-rise buildings and bridge fields. With the continuous development of building engineering technology, the form of steel structure is becoming more and more diversified, and higher requirements are put forward for the manufacturing process and installation precision of steel structure.
[0003] In the construction and assembly process of steel structure, welding is the most important way to connect various components, and the quality of the weld directly relates to the safety, stability and service life of the entire steel structure. Due to the influence of process parameters, operation level and environmental factors during welding, pores, slag inclusion, incomplete fusion and cracks may occur inside the weld. If they cannot be discovered and treated in time, they are likely to cause rupture and even structural collapse accidents when the steel structure bears load or vibration.
[0004] At present, when detecting the weld of steel structure, an ultrasonic detection head is driven to move along the circumference of the weld by a rotating support sleeve set outside the steel structure. However, due to the existence of certain tolerance in the manufacturing and installation process of steel structure, or the deformation of the cross section caused by stress, the weld surface has uneven height. If the detection head and the support are rigidly connected, when the surface of the steel structure is uneven or the diameter changes, the detection head will separate from the workpiece surface to form a gap, or hard collision with the weld protrusion will occur, resulting in loss of detection data or damage to the probe. Moreover, when installing and disassembling the tool, the probe cannot be automatically retracted and stored, which will cause interference and scratching when the tool is sleeved into the steel structure, resulting in damage to the detection head. SUMMARY
[0005] In view of the deficiencies of the prior art, the present application provides a steel structure weld nondestructive detection auxiliary tool capable of precise detection, which solves the problem that the existing steel structure weld detection auxiliary tool cannot actively adjust the radial position of the ultrasonic detection head according to the irregularity of the steel structure surface, resulting in disconnection of the detection head from the weld surface during detection and interruption of detection.
[0006] In order to achieve the above object, the present application is realized by the following technical scheme: A steel structure welding seam nondestructive testing auxiliary tool capable of precise detection, comprising a hollow plate, a support ring is rotatably connected to the front side of the hollow plate, a control mechanism is arranged on the inner side of the support ring, the control mechanism is used for facilitating the detection of irregular steel structures, a rotating mechanism is arranged on the inner side of the hollow plate, the rotating mechanism is used for facilitating the detection of different positions of the steel structure, a fixing mechanism is arranged at the bottom of the hollow plate, and the fixing mechanism is used for facilitating the fixation of the auxiliary tool on the outer side of the steel structure. The control mechanism comprises an inner cavity, the inner cavity is arranged on the inner side of the support ring, a rack is slidably connected to the inner side of the inner cavity, a gear one is rotatably connected to the inner side of the inner cavity, the rack is meshingly connected with the gear one, an electric telescopic rod is fixedly connected to the inner side bottom of the rack, the output end of the electric telescopic rod is fixedly connected with the upper rack, a connecting rod is rotatably connected to the front side of the rack, windows are arranged on the inner rear end of the support ring, a back plate is rotatably connected to the front side of the connecting rod through the windows, and an ultrasonic detection head is arranged on the front side of the back plate.
[0007] Preferably, the rotating mechanism comprises two rotating columns, the two rotating columns are fixedly connected to the inner left and right sides of the hollow plate, a gear two is fixedly connected to the outer side of the rotating column, and a tooth groove is arranged on the outer side of the support ring.
[0008] Preferably, the fixing mechanism comprises two rotating shafts, the two rotating shafts are rotatably connected to the left and right sides of the bottom of the hollow plate, a movable frame is fixedly connected to the outer side of the rotating shaft, a V-shaped frame is rotatably connected to the front side of the movable frame, supporting legs are rotatably connected to the front and rear ends of one side of the V-shaped frame, and a supporting plate is fixedly connected to the rear side of the movable frame.
[0009] Preferably, the rotating mechanism further comprises an outer shell, the outer shell is fixedly connected to the top of the hollow plate, and a driven bevel gear is fixedly connected to the top of the rotating column and penetrates the hollow plate.
[0010] Preferably, the rotating mechanism further comprises an electric motor, the electric motor is fixedly connected to the right side of the outer shell, a transmission rod is fixedly connected to the output end of the electric motor and penetrates the outer shell, a driving bevel gear is fixedly connected to the outer wall of the transmission rod and arranged on the left and right sides, and the driving bevel gear is meshingly connected with the driven bevel gear.
[0011] Preferably, the control mechanism further comprises two movable plates, the two movable plates are slidably connected to the inner left and right sides of the back plate, limit grooves are arranged on the inner left and right sides of the support ring, and one end of the movable plate is slidably connected with the limit groove.
[0012] Preferably, the control mechanism further comprises two screws, the two screws are arranged at the left and right ends of the front side of the ultrasonic detection head respectively, and the rear ends of the two screws penetrate the ultrasonic detection head and are threadedly connected with the back plate.
[0013] Preferably, the size of the inner side of the window matches the size of the connecting rod.
[0014] Preferably, the fixing mechanism further comprises a fixing block, the fixing block is fixedly connected to the bottom rear side of the hollow plate, a bolt is threadedly connected to the rear side of the fixing block, the front end of the bolt penetrates the fixing block and is rotatably connected with a connecting block, the left and right sides of the connecting block are rotatably connected with connecting plates, and the connecting plates are rotatably connected with the support plate.
[0015] Preferably, the fixing mechanism further comprises a plurality of anti-skid pieces, the plurality of anti-skid pieces are fixedly connected to the corresponding one side of the supporting leg, and the supporting leg is in contact with the steel structure through the anti-skid pieces.
[0016] The application provides a steel structure welding seam nondestructive detection auxiliary tool capable of precise detection. 1、The electric telescopic rod drives the upper rack to move, the meshing transmission of gear one and the upper and lower racks promotes the synchronous movement of the two racks to the middle or to the two sides, and then the connecting rod drives the back plate and the ultrasonic detection head to perform radial telescopic adjustment, so that the ultrasonic detection head can actively adapt to steel structures with different pipe diameters or irregular surfaces, the distance between the ultrasonic detection head and the surface of the steel structure is precisely controlled, the detection head is ensured to be closely attached to the welding seam at all times, the problems of probe separation and detection interruption caused by insufficient attachment force or uneven surface are avoided, and precise nondestructive detection is realized.
[0017] 2、The motor drives the transmission rod and the two sides of the driving bevel gear to rotate, the meshing of the driving bevel gear and the driven bevel gear drives the rotating column and gear two to synchronously rotate, the gear two meshes with the tooth groove on the outer side of the support ring, thereby driving the support ring to carry the ultrasonic detection head to rotate around the steel structure in the circumferential direction, the automatic circumferential scanning of the welding seam of the steel structure can be realized, manual repeated adjustment of the position of the tool is not needed, continuous detection of different positions in the circumferential direction of the welding seam can be completed, the detection efficiency and the degree of automation are improved while the attachment degree is ensured.
[0018] 3、The rotating bolt drives the connecting block to move, the connecting plate pushes the support plate, and then the two sides of the movable frame are synchronously rotated around the rotating shaft, the V-shaped frame at the front end and the supporting leg are inwardly folded and tightly hold the steel structure, only single-point driving is needed to realize multi-point synchronous locking, the auxiliary tool can be firmly and centrally fixed outside the steel structure, and the anti-skid pieces on the supporting leg prevent the equipment from slipping or shifting during the detection process, and the practicability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 is a perspective view of the present application; Figure 2 is a partial exploded view of the present application; Figure 3 is a partial sectional view of the control mechanism of the present application; Figure 4 is a partial sectional view of the present application; Figure 3 is an enlarged view of A in Figure 5 is a partial sectional view of the rotating mechanism of the present application; Figure 6 is a partial sectional view of the present application; Figure 7 is a partial structural schematic view of the present application; Figure 8 is a partial exploded view of the fixing mechanism of the present application.
[0020] Wherein, 1, hollow plate; 2, control mechanism; 21, inner cavity; 22, rack; 23, gear one; 24, electric telescopic rod; 25, window; 26, connecting rod; 27, back plate; 28, ultrasonic detection head; 29, movable plate; 210, limiting groove; 211, screw; 3, rotating mechanism; 31, rotating column; 32, gear two; 33, gear slot; 34, driven bevel gear; 35, outer shell; 36, motor; 37, transmission rod; 38, driving bevel gear; 4, fixing mechanism; 41, rotating shaft; 42, movable frame; 43, V-shaped frame; 44, supporting leg; 45, supporting plate; 46, fixing block; 47, bolt; 48, connecting block; 49, connecting plate; 410, anti-skid piece; 5, supporting ring. DETAILED DESCRIPTION
[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.
[0022] Referring to Figure 1 , Figure 3 and Figure 4This invention provides an auxiliary tooling for non-destructive testing of steel structure welds that can be accurately inspected. It includes a hollow plate 1, a support ring 5 rotatably connected to the front side of the hollow plate 1, a control mechanism 2 provided on the inner side of the support ring 5, the control mechanism 2 being used to facilitate the inspection of irregular steel structures, a rotation mechanism 3 provided on the inner side of the hollow plate 1, the rotation mechanism 3 being used to facilitate the inspection of different positions of the steel structure, and a fixing mechanism 4 provided at the bottom of the hollow plate 1, the fixing mechanism 4 being used to facilitate the fixing of the auxiliary tooling to the outside of the steel structure. The control mechanism 2 includes an inner cavity 21, which is located inside the support ring 5. A rack 22 is slidably connected to both the upper and lower ends of the front side of the inner cavity 21. A gear 23 is rotatably connected to the front side of the inner cavity 21, meshing with the rack 22. An electric telescopic rod 24 is fixedly connected to the bottom inner side of the rack 22. The output end of the electric telescopic rod 24 is fixedly connected to the upper rack 22. When the electric telescopic rod 24 pushes the upper rack 22 to move, it drives the lower rack 22 to move in the opposite direction through the transmission action of the gear 23. A connecting rod 26 is rotatably connected to one end of the front side of the rack 22. Windows 25 are provided on both the left and right sides of the rear end of the support ring 5. The front side of the connecting rod 26 passes through the windows 25 and is rotatably connected to a back plate 27. When the rack 22 moves, the connecting rod 26 can push the back plate 27 to move. An ultrasonic detection head 28 is provided on the front side of the back plate 27, and the back plate 27 drives the ultrasonic detection head 28 to move. 2 also includes two movable plates 29, which are slidably connected to the left and right sides inside the back plate 27. The left and right sides inside the support ring 5 are provided with limit grooves 210. One end of the movable plate 29 is slidably connected to the limit groove 210. When the back plate 27 moves, the movable plates 29 on both sides will slide inside the limit groove 210, thereby providing guidance and limit for the movement of the back plate 27 and preventing the back plate 27 from deflecting during the movement. The control mechanism 2 also includes two screws 211, which are respectively set at the left and right ends of the front side of the ultrasonic detection head 28. The rear ends of the two screws 211 pass through the ultrasonic detection head 28 and are threadedly connected to the back plate 27. The ultrasonic detection head 28 can be easily removed and replaced by removing the screws 211. The inner size of the window 25 matches the size of the connecting rod 26. The window 25 provides a limit for the movement of the connecting rod 26, so that the connecting rod 26 will not deflect. Specifically, the hollow plate 1 is first installed on the outside of the steel structure to be inspected. If there is a gap between the ultrasonic testing head 28 and the surface of the steel structure, the electric telescopic rod 24 is activated. The output end of the electric telescopic rod 24 shortens and drives the upper rack 22 to move to the right. Since both racks 22 are meshed with the gear 23 in the middle, when the upper rack 22 moves to the right, the gear 23 will drive the lower rack 22 to move to the left, thereby realizing that the upper and lower racks 22 move towards the middle in opposite directions at the same time. Since the ends of both racks 22 are rotatably connected to the back plate 27 through the connecting rod 26, the connecting rod 26 will push the back plate 27 forward during the movement of the racks 22, thereby driving the... The ultrasonic testing head 28, installed on the front side of the back plate 27, feeds towards the surface of the steel structure until the end face of the ultrasonic testing head 28 is in close contact with the weld area of the steel structure. Then, the subsequent testing work can be performed. During this process, the movable plates 29 installed inside both sides of the back plate 27 will slide synchronously in the limiting grooves 210 opened in the inner wall of the support ring 5. The cooperation between the movable plates 29 and the limiting grooves 210 provides guidance for the back plate 27 to move back and forth, preventing the back plate 27 from swaying left and right or getting stuck during the process of being stressed. When the equipment needs to be inspected and maintained, the ultrasonic testing head 28 can be separated from the back plate 27 simply by unscrewing and removing the screws 211, which makes it convenient for the staff to replace and maintain the ultrasonic testing head 28.
[0023] Reference Figure 2 , Figure 5 and Figure 6 The rotating mechanism 3 includes two rotating columns 31, which are fixedly connected to the left and right sides of the hollow plate 1 respectively. A gear 32 is fixedly connected to the outer side of the rotating column 31. A toothed groove 33 is opened on the outer side of the support ring 5. The gear 32 meshes with the toothed groove 33. When the rotating column 31 rotates, it will drive the gear 32 to rotate, thereby driving the support ring 5 to rotate. The rotating mechanism 3 also includes a housing 35, which is fixedly connected to the top of the hollow plate 1. The top of the rotating column 31 passes through the hollow plate 1 and is fixedly connected to a driven bevel gear 34. The rotating mechanism 3 also includes a motor 36, which is fixedly connected to the right side of the housing 35. The output end of the motor 36 passes through the housing 35 and is fixedly connected to a transmission rod 37. The left and right sides of the outer wall of the transmission rod 37 are fixedly connected to driving bevel gears 38. The motor 36 can drive the driving bevel gears 38 to rotate through the transmission rod 37. The driving bevel gears 38 mesh with the driven bevel gears 34. When the driving bevel gears 38 rotate, the driven bevel gears 34 will drive the rotating column 31 to rotate. Specifically, when a comprehensive circumferential inspection of the steel structure weld is required, the motor 36 is started. The motor 36 drives the transmission rod 37 to rotate, and the driving bevel gears 38 fixed on both sides of the transmission rod 37 rotate synchronously. Since the driving bevel gears 38 on both sides are meshed with the driven bevel gears 34 respectively, when the driving bevel gears 38 rotate, the two driven bevel gears 34 will drive the corresponding rotating columns 31 to rotate synchronously, and the rotation directions of the rotating columns 31 on both sides are the same. When the rotating columns 31 rotate, they drive the gear 2 32 to rotate together. Since the gear 2 32 on both sides are meshed with the tooth grooves 33 opened on the outer circumferential surface of the support ring 5, In this state, the continuous rotation of gear 2 32 will cause the support ring 5 to move in a circular motion around the central axis of the hollow plate 1 through the tooth groove 33. When the support ring 5 rotates, it carries the internally installed ultrasonic detection head 28 to move along the weld of the steel structure, thereby realizing continuous scanning of the weld at different angles and positions. In addition, in conjunction with the control mechanism 2, the extension distance of the back plate 27 can be adjusted in real time, which can dynamically compensate for the unevenness or ellipticity error of the steel structure surface, ensuring that the ultrasonic detection head 28 always maintains constant pressure against the weld surface, effectively preventing the ultrasonic detection head 28 from detaching from the weld surface due to poor contact, which would cause the detection signal to be interrupted or the data to be lost.
[0024] Reference Figure 1 , Figure 7 and Figure 8 The fixing mechanism 4 includes two rotating shafts 41, which are rotatably connected to the left and right sides of the bottom of the hollow plate 1, respectively. A movable frame 42 is fixedly connected to the outer side of the rotating shafts 41. A V-shaped frame 43 is rotatably connected to the front side of the movable frame 42. Rotation of the movable frame 42 can drive the V-shaped frame 43 to rotate. Support legs 44 are rotatably connected to the front and rear ends of one side of the V-shaped frame 43. The support legs 44 are used to contact the steel structure. A support plate 45 is fixedly connected to the rear side of the movable frame 42. The fixing mechanism 4 also includes a fixing block 46, which is fixedly connected to the rear side of the bottom of the hollow plate 1. The rear side of the fixing block 46 is threaded with a... Bolt 47, the front end of bolt 47 passes through fixing block 46 and is rotatably connected to connecting block 48. Rotating bolt 47 can drive connecting block 48 to move. Connecting plate 49 is rotatably connected to both the left and right sides of connecting block 48. Connecting plate 49 is rotatably connected to support plate 45. When connecting block 48 moves, it can push support plate 45 through connecting plate 49. Fixing mechanism 4 also includes multiple anti-slip plates 410. Multiple anti-slip plates 410 are respectively fixedly connected to one side of corresponding support leg 44. Support leg 44 contacts steel structure through anti-slip plate 410. Anti-slip plate 410 can prevent support leg 44 from slipping with steel structure. Specifically, when installing auxiliary fixtures before the inspection operation, the hollow plate 1 is first moved to the inspection position outside the steel structure, and the position is adjusted so that the ultrasonic testing head 28 is directly facing the weld area. Then, the bolt 47 is rotated, and the bolt 47 gradually unscrews from inside the fixing block 46, causing the connecting block 48 to move backward. Since the left and right sides of the connecting block 48 are respectively rotatably connected to the connecting plates 49, and the other end of the connecting plate 49 is connected to the support plate 45, when the connecting block 48 moves backward, it pulls the connecting plate 49, thereby affecting the support plate 45. When a force is applied, the support plate 45 is subjected to force and causes the movable frame 42 to deflect around the axis of the rotating shaft 41, so that the front ends of the movable frames 42 on both sides close inward simultaneously, thereby causing the V-shaped frame 43 to approach the center line of the steel structure. The legs 44 on the V-shaped frame 43 then press against the surface of the steel structure until the anti-slip plate 410 set on the inner side of the legs 44 contacts and is squeezed against the outer wall of the steel structure. The hollow plate 1 is firmly locked to the outside of the steel structure by using multi-point clamping force, thus completing the fixed installation of the equipment for subsequent testing.
[0025] Working principle: During the steel structure inspection, the hollow plate 1 is first installed on the outside of the steel structure. When the ultrasonic testing head 28 is far from the steel structure, the electric telescopic rod 24 is activated. The electric telescopic rod 24 will pull the upper rack 22 to the right. Since both racks 22 are meshed with gear 23, when the upper rack 22 moves to the right, the transmission action of gear 23 can drive the lower rack 22 to the left, thereby causing both racks 22 to move towards the center simultaneously. Since both racks 22 are connected to the back plate 27 through the connecting rod 26, the movement of both racks 22... When the back plate 27 is moved forward by the connecting rod 26, the ultrasonic testing head 28 is moved forward and then to the welded joint of the steel structure, so that the ultrasonic testing head 28 can be in contact with the welded joint of the steel structure. This allows for convenient testing of the steel structure. When the back plate 27 moves, the movable plates 29 on both sides slide inside the limiting groove 210, thereby guiding the movement of the back plate 27 and preventing the back plate 27 from shifting during the movement. Furthermore, the ultrasonic testing head 28 can be easily disassembled by removing the screw 211 on the front side of the ultrasonic testing head 28, making it convenient for staff to maintain the ultrasonic testing head 28. Furthermore, when it is necessary to inspect different positions around the steel structure weld, the motor 36 is started. The motor 36 can drive the active bevel gears 38 on both sides to rotate through the transmission rod 37. Since the driven bevel gears 34 on both sides mesh with the corresponding active bevel gears 38, the driven bevel gears 34 on both sides will drive the two rotating columns 31 to rotate synchronously, and the rotating columns 31 on both sides will rotate in the same direction. The rotating columns 31 will then drive the gear 2 32 to rotate. Since the gear 2 32 on both sides meshes with the tooth groove 33 opened on the outer side of the support ring 5, when the gear 2 32 on both sides rotates, it will drive the support ring 5 to rotate, thereby driving the ultrasonic testing head 28 to inspect different positions around the steel structure weld. During the inspection process, the position of the ultrasonic testing head 28 is continuously adjusted by the control mechanism 2, so that the ultrasonic testing head 28 can always be in close contact with the surface of the steel structure weld, avoiding the ultrasonic testing head 28 from detaching from the weld and causing the inspection to be interrupted. Finally, when it is necessary to install the hollow plate 1 on the outside of the steel structure, first place the hollow plate 1 on the outside of the steel structure, align the ultrasonic testing head 28 with the weld position, and then rotate the bolt 47. When the bolt 47 rotates, it will gradually unscrew the fixing block 46, thereby driving the connecting block 48 to move backward. Since the two sides of the connecting block 48 are connected to the support plates 45 on both sides through the connecting plate 49, when the connecting block 48 moves, it can push the support plate 45 through the connecting plate 49. The support plate 45 will then drive the movable frame 42 to rotate around the rotating shaft 41. At this time, the front sides of the movable frames 42 on both sides will move towards the middle in sync, thereby driving the V-shaped frames 43 on both sides to move towards the middle. The V-shaped frames 43 will then drive the legs 44 to approach the steel structure. Finally, the legs 44 will make close contact with the outer surface of the steel structure through the anti-slip plate 410, thus fixing the hollow plate 1 on the outside of the steel structure, thereby facilitating the inspection of the steel structure.
[0026] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An auxiliary tooling for non-destructive testing of steel structure welds, comprising a hollow plate (1), characterized in that, The front side of the hollow plate (1) is rotatably connected to a support ring (5), and a control mechanism (2) is provided on the inner side of the support ring (5). The control mechanism (2) is used to facilitate the inspection of irregular steel structures. A rotating mechanism (3) is provided on the inner side of the hollow plate (1). The rotating mechanism (3) is used to facilitate the inspection of different positions of the steel structure. A fixing mechanism (4) is provided at the bottom of the hollow plate (1). The fixing mechanism (4) is used to facilitate the fixing of auxiliary tooling on the outside of the steel structure. The control mechanism (2) includes an inner cavity (21), which is located inside the support ring (5). The upper and lower ends of the inner front side of the inner cavity (21) are slidably connected to a rack (22). The inner front side of the inner cavity (21) is rotatably connected to a gear (23). The rack (22) meshes with the gear (23). An electric telescopic rod (24) is fixedly connected to the bottom of the inner side of the rack (22). The output end of the electric telescopic rod (24) is fixedly connected to the upper rack (22). A connecting rod (26) is rotatably connected to one end of the front side of the rack (22). Windows (25) are opened on the left and right sides of the inner rear end of the support ring (5). The front side of the connecting rod (26) passes through the window (25) and is rotatably connected to a back plate (27). An ultrasonic detection head (28) is provided on the front side of the back plate (27).
2. The auxiliary tooling for precise non-destructive testing of steel structure welds according to claim 1, characterized in that, The rotating mechanism (3) includes two rotating columns (31), which are fixedly connected to the left and right sides of the hollow plate (1) respectively. A gear (32) is fixedly connected to the outside of the rotating column (31), and a tooth groove (33) is opened on the outside of the support ring (5). The gear (32) meshes with the tooth groove (33).
3. The auxiliary tooling for precise non-destructive testing of steel structure welds according to claim 1, characterized in that, The fixing mechanism (4) includes two rotating shafts (41), which are rotatably connected to the bottom left and right sides of the hollow plate (1). A movable frame (42) is fixedly connected to the outside of the rotating shaft (41). A V-shaped frame (43) is rotatably connected to the front side of the movable frame (42). A support leg (44) is rotatably connected to the front and rear ends of one side of the V-shaped frame (43). A support plate (45) is fixedly connected to the rear side of the movable frame (42).
4. The auxiliary tooling for precise detection of non-destructive testing of steel structure welds according to claim 2, characterized in that, The rotating mechanism (3) also includes a housing (35), which is fixedly connected to the top of the hollow plate (1). The top of the rotating column (31) passes through the hollow plate (1) and is fixedly connected to a driven bevel gear (34).
5. The auxiliary tooling for precise detection of non-destructive testing of steel structure welds according to claim 4, characterized in that, The rotating mechanism (3) also includes a motor (36), which is fixedly connected to the right side of the housing (35). The output end of the motor (36) passes through the housing (35) and is fixedly connected to a transmission rod (37). The left and right sides of the outer wall of the transmission rod (37) are fixedly connected to a drive bevel gear (38), which meshes with a driven bevel gear (34).
6. The auxiliary tooling for precise detection of non-destructive testing of steel structure welds according to claim 1, characterized in that, The control mechanism (2) also includes two movable plates (29), which are slidably connected to the left and right sides of the back plate (27) respectively. The left and right sides of the support ring (5) are provided with limit grooves (210), and one end of the movable plate (29) is slidably connected to the limit groove (210).
7. The auxiliary tooling for precise non-destructive testing of steel structure welds according to claim 1, characterized in that, The control mechanism (2) also includes two screws (211), which are respectively located on the left and right sides of the front of the ultrasonic detection head (28). The rear ends of the two screws (211) pass through the ultrasonic detection head (28) and are threadedly connected to the back plate (27).
8. The auxiliary tooling for precise non-destructive testing of steel structure welds according to claim 1, characterized in that, The inner dimensions of the window (25) match the dimensions of the connecting rod (26).
9. The auxiliary tooling for precise non-destructive testing of steel structure welds according to claim 3, characterized in that, The fixing mechanism (4) further includes a fixing block (46), which is fixedly connected to the bottom rear side of the hollow plate (1). The rear side of the fixing block (46) is threaded with a bolt (47). The front end of the bolt (47) passes through the fixing block (46) and is rotatably connected to a connecting block (48). The left and right sides of the connecting block (48) are rotatably connected to connecting plates (49). The connecting plates (49) are rotatably connected to the support plate (45).
10. The auxiliary tooling for precise detection of non-destructive testing of steel structure welds according to claim 3, characterized in that, The fixing mechanism (4) also includes multiple anti-slip plates (410), which are respectively fixedly connected to one side of the corresponding support leg (44), and the support leg (44) contacts the steel structure through the anti-slip plates (410).