A welding non-destructive testing device

CN224840196UActive Publication Date: 2026-10-09YICHANG HUAXING CHEM EQUIP TESTING CO LTD
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Patent Information

Application Number
CN202521752919.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-08-18
Publication Date
2026-10-09
Estimated Expiration
2035-08-18

AI Technical Summary

Technical Problem

然而上述技术方案虽然能够通过调整检测部件的高度和角度使检测装置适应不同尺寸圆柱形结构的检测需求,但其仅能够进行沿物体周向调整倾角,不具备调整检测部件倾斜方向的作用,检测部件难以适应物体轴线方向上的倾斜度变化,因此上述检测装置无法满足焊接面沿物体长度方向上起伏变化的物体检测需求,使用时具有一定的局限性,适用性不佳

Benefits of technology

本实用新型中的焊接无损检测装置通过设置的检测调节结构能够调整识别检测组件中检测部件的高度、倾斜方向和倾斜角度,配合横移结构对检测调节结构水平方向上的移动调整,即可在移动滑台带动龙门架活动的过程中,使检测部件沿焊缝轨迹活动,并保持检测部件与检测部件检测部位的垂直效果,满足焊接件上不同焊缝轨迹的检测需求,有效提升装置的适用性和实用性;此外,识别部件能够实现对焊缝的位置和距离检测,配合对横向结构和检测调节结构的调节控制即可实现装置的自动检测,有助于在保证检测精确程度的情况下提升焊接检测过程的自动化程度和检测效率。

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Abstract

The utility model discloses a kind of welding nondestructive testing devices, it is related to welding detection technical field, including bearing structure, detection adjusting structure and transverse structure, wherein bearing structure includes base, mobile sliding table and portal frame, two mobile sliding tables are installed on base upper surface along base length direction horizontal parallel symmetry, portal frame is installed in the top of two mobile sliding tables.The welding nondestructive testing device can adjust the height, inclination direction and inclination angle of detection component in identification detection component by the detection adjusting structure being set, cooperate with the movement adjustment of detection adjusting structure in horizontal direction of transverse structure, detection component can be moved along weld track in the process that mobile sliding table drives portal frame to move, and detection component and welding part detection site are kept perpendicular, effectively improve the applicability and practicality of device;In addition, the automatic adjustment of detection component can also be carried out by the detection of identification component to the welding site, so as to improve the degree of automation and detection efficiency of device.
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Description

Technical Field

[0001] This utility model relates to the field of welding inspection technology, and more specifically, to a welding non-destructive testing device. Background Technology

[0002] Welding is a critical process in manufacturing, construction, energy, aerospace, and other fields, and its quality directly affects the safety, reliability, and service life of structures. Welding defects (such as cracks, porosity, lack of fusion, and slag inclusions) can lead to stress concentration, fatigue fracture, or even catastrophic accidents. Therefore, welding quality inspection is a crucial step in ensuring engineering safety.

[0003] Chinese utility model patent CN216608730U discloses a non-destructive testing device for welding defects, including a base plate, a gantry frame, a traveling mechanism, side plates, a lifting mechanism, a vertical plate, a rotating mechanism, and non-destructive testing components. The gantry frame is suspended on a horizontally longitudinally positioned boiler, with base plates horizontally positioned at both ends. A traveling mechanism is located on the lower surface of each base plate, driving the gantry frame to move horizontally. This technical solution, through the cooperation of the gantry frame, side plates, lifting mechanism, and rotating mechanism, achieves automated inspection along the boiler's length, ensuring the testing components are aligned with the boiler welds. It improves inspection efficiency, reduces labor intensity, and enhances the accuracy and stability of the inspection through the coordination of the lifting and rotating mechanisms. However, although the above technical solution can adapt the detection device to the detection needs of cylindrical structures of different sizes by adjusting the height and angle of the detection component, it can only adjust the tilt angle along the circumference of the object and does not have the function of adjusting the tilt direction of the detection component. The detection component is difficult to adapt to the tilt changes in the axial direction of the object. Therefore, the above detection device cannot meet the detection needs of objects with undulating weld surfaces along the length of the object. It has certain limitations in use and poor applicability. Utility Model Content

[0004] In view of this, the purpose of this utility model is to provide a welding non-destructive testing device, which can automatically adjust the position, height, tilt angle and tilt direction of the testing component by identifying the position and distance of the weld seam. This allows the welding testing device to meet the testing requirements of different welding surfaces and different weld seam orientations, so as to effectively enhance the applicability and practicality of the device while ensuring the degree of automation and testing efficiency.

[0005] To achieve the above objectives, this utility model provides a welding non-destructive testing device, comprising: The supporting structure includes a base, two horizontally parallel and symmetrically mounted sliding tables on the upper surface of the base along the length of the base, and a gantry frame mounted on the top of the two sliding tables. The gantry frame is adapted to move along the sliding tables, and welded parts are placed on the upper surface of the base. A detection and adjustment structure is provided inside the gantry frame. The detection and adjustment structure includes a lifting assembly vertically installed inside the gantry frame, an identification and detection assembly installed below the lifting assembly, a tilt adjustment assembly installed on the identification and detection assembly and used to adjust the detection angle, and a rotation assembly installed on the lifting assembly and used to drive the identification and detection assembly to rotate. The identification and detection assembly includes a mounting base vertically disposed inside the gantry frame, a detection component vertically rotatably mounted inside the mounting base for detecting the welded parts, and an identification component fixedly mounted at the bottom of the mounting base. The identification component is used to measure the distance between the welded part on the welded parts and the detection component. A transverse sliding structure is installed in the transverse section of the gantry frame, and the detection and adjustment structure is installed at the bottom of the transverse sliding structure. The transverse sliding structure is used to drive the detection and adjustment structure to move horizontally. The gantry frame is adapted to slide on the movable slide to drive the detection and adjustment structure to move above the welded part. The detection and adjustment structure adjusts the height, tilt angle and tilt direction of the detection component according to the position of the welded part, so that the detection component can detect the welded part on the welded part.

[0006] Furthermore, the transverse structure includes a first driving member installed in the transverse section of the gantry frame, a threaded rod installed at the output end of the first driving member, and a moving block threaded on the outside of the threaded rod and slidably connected to the transverse section of the gantry frame. The transverse section of the gantry frame is vertically provided with a moving groove that is slidably adapted to the moving block.

[0007] Furthermore, the lifting assembly includes a fixed plate installed at the bottom of the movable block, a plurality of first electric push rods vertically installed at the bottom of the fixed plate, and a lifting seat installed at the bottom end of the first electric push rods, and the rotating assembly is installed inside the lifting seat.

[0008] Furthermore, the rotating assembly includes a second gear rotatably mounted inside the lifting seat, a second driving member mounted on the outside of the lifting seat, a third gear mounted on the output end of the second driving member and meshing with the second gear, and a plurality of connecting rods vertically mounted on the bottom of the second gear and fixedly connected to the mounting seat.

[0009] Furthermore, the mounting base is a rectangular cylindrical shape, and the inner wall dimension of the mounting base is slidably adapted to the outer wall dimension of the detection component.

[0010] Furthermore, the outer side of the detection component is fitted with a mounting sleeve, and two rotating rods are horizontally and symmetrically arranged on the outer periphery of the mounting sleeve, which are rotatably connected to the mounting base, and the rotating rods horizontally penetrate the mounting base.

[0011] Furthermore, the tilt adjustment assembly includes a first gear located on one side of the mounting base in the width direction and coaxially arranged with the rotating rod, an electric slide rail mounted on one side of the mounting base in the width direction and located above the first gear, and a rack mounted on the bottom of the movable seat of the electric slide rail and meshing with the first gear. The first gear is fixedly connected to the rotating rod, and a connecting block is installed in the middle of the top surface of the rack, and the connecting block is detachably mounted on the bottom of the movable seat of the electric slide rail.

[0012] Furthermore, the welding non-destructive testing device also includes: The clamping structure includes two clamping plates that are horizontally parallel and symmetrically arranged between the two movable slides along the length of the base, a number of limiting sliders installed at the bottom of the clamping plates and vertically inserted into the base, and a number of second electric push rods installed on the lower surface of the base and fixedly connected to the limiting sliders. The number of second electric push rods are divided into two groups and symmetrically arranged on the side of the two clamping plates that are separated from each other.

[0013] Furthermore, the base is vertically provided with a limiting groove that is adapted to slide the limiting slider, and the two clamping plates are horizontally provided with V-shaped grooves on opposite sides.

[0014] Compared with the prior art, this utility model has the following advantages and effects: The welding non-destructive testing device of this invention can adjust the height, tilt direction, and tilt angle of the detection component in the identification and detection assembly through a detection adjustment structure. Combined with the horizontal movement structure to adjust the horizontal movement of the detection adjustment structure, the detection component can move along the weld seam trajectory while the moving slide table drives the gantry frame, maintaining the perpendicularity between the detection component and the detection area. This meets the detection requirements of different weld seam trajectories on the welded parts, effectively improving the applicability and practicality of the device. Furthermore, the identification component can detect the position and distance of the weld seam. Combined with the adjustment and control of the horizontal structure and the detection adjustment structure, automatic detection can be achieved, helping to improve the automation and efficiency of the welding inspection process while ensuring detection accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the welding non-destructive testing device in this embodiment of the present invention; Figure 2This is a schematic diagram of the detection and adjustment structure of the welding non-destructive testing device in an embodiment of this utility model; Figure 3 This is a schematic diagram of the front cross-sectional structure of the welding non-destructive testing device after removing the welded parts in an embodiment of this utility model; Figure 4 for Figure 3 A schematic diagram of the structure at point A in the middle.

[0016] Explanation of reference numerals in the attached figures: 1-Bearing structure; 11-Base; 12-Moving slide; 13-Gantry frame; 2- Lateral shift structure; 21-First driving component; 22-Threaded rod; 23-Moving block; 3-Detection and adjustment structure; 31-Lifting assembly; 311-Fixing plate; 312-First electric actuator; 313-Lifting base; 32-Identification and detection component; 321-Mounting base; 322-Detection component; 3221-Mounting sleeve; 3222-Rotating rod; 323-Identification component; 33-Tilting adjustment assembly; 331-Electric slide rail; 332-Rack; 3321-Connecting block; 333-First gear; 34-Rotating assembly; 341-Second gear; 342-Second driving component; 343-Third gear; 344-Connecting rod; 4-Clamping structure; 41-Second electric actuator; 42-Limit slider; 43-Clamping plate; 5-Welded parts. Detailed Implementation

[0017] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] Please see Figure 1-4 As shown, this utility model embodiment provides a welding non-destructive testing device, including a bearing structure 1, a testing and adjustment structure 3, and a transverse movement structure 2. The bearing structure 1 includes a base 11, a movable slide 12, and a gantry frame 13. Two movable slides 12 are horizontally parallel and symmetrically installed on the upper surface of the base 11 along the length direction of the base 11. The gantry frame 13 is installed on the top of the two movable slides 12 and is adapted to move along the movable slides 12. A welding component 5 is placed on the top of the base 11.

[0020] The detection adjustment structure 3 is located inside the gantry frame 13. The detection adjustment structure 3 includes an identification detection component 32, a tilt adjustment component 33, a lifting component 31, and a rotating component 34. The lifting component 31 is vertically installed inside the gantry frame 13. The identification detection component 32 is installed below the lifting component 31. The tilt adjustment component 33 is installed on the identification detection component 32 and is used to adjust the detection angle. The rotating component 34 is installed on the lifting component 31 and is used to drive the identification detection component 32 to rotate.

[0021] The identification and detection component 32 includes a mounting base 321, a detection component 322, and an identification component 323. The mounting base 321 is vertically disposed inside the gantry frame 13. The detection component 322 is vertically rotatably mounted inside the mounting base 321 and is used to detect the welded part 5. The identification component 323 is fixedly mounted at the bottom of the mounting base 321. The identification component 323 is adapted to use image recognition to confirm the position of the welded part and the distance to the detection component 322.

[0022] As a preferred embodiment of the above scheme, the identification component 323 is a binocular camera, and the identification component 323 is tilted towards the bottom of the detection component 322, so as to use the identification component 323 to detect the position, tilt angle, tilt direction and distance to the detection component 332 of the welding part on the welding part 5 to be inspected.

[0023] The tilt adjustment component 33 is used to adjust the tilt angle of the detection component 322, the lifting component 31 is used to adjust the height of the identification detection component 32, and the rotating component 34 is used to drive the identification detection component 32 to rotate.

[0024] The transverse moving structure 2 is installed in the transverse section of the gantry frame 13, and the detection and adjustment structure 3 is installed at the bottom of the transverse moving structure 2. The transverse moving structure 2 is used to drive the detection and adjustment structure 3 to move horizontally.

[0025] The movable slide 12 and the gantry 13 work together to move the detection and adjustment structure 3 above the welded part 5. The detection and adjustment structure 3 can adjust the height, tilt angle and tilt direction of the detection component 322 according to actual needs, so that the detection component 322 can detect the welded parts on the welded part 5.

[0026] Please see Figure 1-3 As shown, the transverse structure 2 includes a first driving member 21, a threaded rod 22, and a moving block 23. The first driving member 21 is installed in the transverse section of the gantry frame 13, the threaded rod 22 is installed at the output end of the first driving member 21, and the moving block 23 is threadedly installed on the outside of the threaded rod 22 and slidably connected to the transverse section of the gantry frame 13. The transverse section of the gantry frame 13 is vertically provided with a sliding groove that is adapted to the sliding of the moving block 23; this facilitates the use of the rotation of the threaded rod 22 to drive the moving block 23 to move horizontally within the sliding groove of the transverse section of the gantry frame 13.

[0027] Please see Figure 1-4 As shown, the lifting assembly 31 includes a fixed plate 311, a first electric push rod 312, and a lifting seat 313. The fixed plate 311 is installed at the bottom of the moving block 23, and several first electric push rods 312 are vertically installed at the bottom of the fixed plate 311. The lifting seat 313 is installed at the bottom end of the first electric push rods 312, and the rotating assembly 34 is installed inside the lifting seat 313. This allows the lifting seat 313 to move up and down by rotating the first electric push rods 312.

[0028] Please see Figure 1-4 As shown, the rotating assembly 34 includes a second gear 341, a second driving member 342, a third gear 343, and connecting rods 344. The second gear 341 is rotatably mounted inside the lifting seat 313, the second driving member 342 is mounted on the outside of the lifting seat 313, the third gear 343 is mounted on the output end of the second driving member 342 and meshes with the second gear 341, and several connecting rods 344 are vertically mounted on the bottom of the second gear 341 and fixedly connected to the mounting base 321. This facilitates the use of a gear transmission structure to make the mounting base 321 rotate with the operation of the second driving member 342.

[0029] Please see Figure 1-4 As shown, the mounting base 321 is a rectangular cylindrical shape, and the inner wall size of the mounting base 321 is slidably adapted to the outer wall size of the detection component 322; this facilitates the installation of the detection component 322 onto the inner side of the mounting base 321, and allows the detection component 322 to move along the length of the mounting base 321 from the inner side of the mounting base 321.

[0030] Please see Figure 4As shown, the outer side of the detection component 322 is fitted with a mounting sleeve 3221. Two rotating rods 3222 are horizontally symmetrically arranged on the outer periphery of the mounting sleeve 3221 and are rotatably connected to the mounting base 321. The rotating rods 3222 horizontally penetrate the mounting base 321. This allows the detection component 322 to rotate around the axis of the rotating rods 3222 inside the mounting base 321 by using the cooperation of the mounting sleeve 3221 and the rotating rods 3222.

[0031] Please see Figure 1-4 As shown, the tilt adjustment assembly 33 includes a first gear 333, an electric slide rail 331, and a rack 332. The first gear 333 is located on one side of the mounting base 321 in the width direction and is coaxially arranged with the rotating rod 3222. The electric slide rail 331 is installed on one side of the mounting base 321 in the width direction and is located above the first gear 333. The rack 332 is installed at the bottom of the movable seat of the electric slide rail 331 and meshes with the first gear 333. The first gear 333 is fixedly connected to the rotating rod 3222. A connecting block 3321 is installed in the middle of the top surface of the rack 332, and the connecting block 3321 is detachably installed at the bottom of the movable seat of the electric slide rail 331. This allows the rack 332 to move horizontally by the operation of the electric slide rail 331, thereby enabling the rack 332 to cooperate with the first gear 333 to drive the rotating rod 3222 to rotate.

[0032] Please see Figure 1 and Figure 3 As shown, the welding non-destructive testing device also includes a clamping structure 4, which includes clamping plates 43, limiting sliders 42, and second electric push rods 41. The two clamping plates 43 are horizontally parallel and symmetrically arranged between two movable slides 12 along the length of the base 11. Several limiting sliders 42 are installed at the bottom of the clamping plates 43 and vertically inserted into the base 11. Several second electric push rods 41 are installed on the lower surface of the base 11 and fixedly connected to the limiting sliders 42. The several second electric push rods 41 are divided into two groups and symmetrically arranged on the side of the two clamping plates 43 that are separated from each other. This allows the limiting sliders 42 and clamping plates 43 to be moved by operating the second electric push rods 41, thereby adjusting the distance between the two clamping plates 43 to clamp the welded part 5.

[0033] Please see Figure 1 and Figure 3 As shown, the base 11 has a vertically opening limiting groove that is adapted to the sliding of the limiting slider 42, and the two clamping plates 43 have horizontally opening V-shaped grooves on opposite sides; the limiting slider 42, which is set at the bottom of the clamping plate 43, passes through the base 11 through the limiting groove, and the V-shaped grooves allow the clamping plate 43 to clamp the circumferential welding part 5.

[0034] The working process of this welding non-destructive testing device is as follows: When using this welding non-destructive testing device, the clamping structure 4 is first used to clamp the welded part 5, ensuring that the weld seam on the welded part 5 faces upward. Then, the position of the identification and detection component 32 can be adjusted by rotating the transverse structure 2, so that the detection component 322 in the identification and detection component 32 is directly facing the weld seam. After that, the moving slide 12 is rotated to drive the gantry 13 and the identification and detection component 32 to move along the length of the weld seam on the welded part 5. During this process, the tilt adjustment component 33, the lifting component 31 and the rotating component 34 are used to adjust the tilt angle, height position and tilt direction of the detection component 322 in the identification and detection component 32, so that the detection component 322 can adapt to the detection of the weld seam of the welded part 5 in different scenarios. When the weld on the welded part 5 is set on a plane and the weld is straight, the detection component 322 can be adjusted to a vertical state and adjusted to a suitable height before the moving slide 12 is turned, so that the welded part can be quickly detected. When the weld on the welded part 5 is set as a curve, the detection component 322 can be moved along the curve of the weld by the cooperation of the identification component 323 and the transverse moving structure 2. When the side of the welded part 5 with the weld is an arc surface, the tilt angle of the detection component 322 can be adjusted by the tilt adjustment component 33, and the tilt direction of the detection component 322 can be adjusted by the rotation component 34, so that the detection component 322 can be perpendicular to any position on the arc surface structure, so as to realize the detection of the welded part on the arc surface.

[0035] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this invention.

Claims

1. A welding non-destructive testing device, characterized in that, include: The supporting structure (1) includes a base (11), two movable slides (12) that are horizontally parallel and symmetrically installed on the upper surface of the base (11) along the length direction of the base (11), and a gantry frame (13) installed on the top of the two movable slides (12). The gantry frame (13) is adapted to move along the movable slides (12). A welded part (5) is placed on the upper surface of the base (11). The detection adjustment structure (3) is located inside the gantry (13). The detection adjustment structure (3) includes a lifting assembly (31) vertically installed inside the gantry (13), an identification detection assembly (32) installed below the lifting assembly (31), a tilt adjustment assembly (33) installed on the identification detection assembly (32) and used to adjust the detection angle, and a rotation assembly (34) installed on the lifting assembly (31) and used to drive the identification detection assembly (32) to rotate. The identification and detection component (32) includes a mounting base (321) vertically disposed inside the gantry frame (13), a detection component (322) vertically rotatably mounted inside the mounting base (321) and used to detect the welded part (5), and an identification component (323) fixedly mounted at the bottom of the mounting base (321). The identification component (323) is used to measure the distance between the welded part on the welded part (5) and the detection component (322). A transverse structure (2) is installed in the transverse section of the gantry (13), and the detection and adjustment structure (3) is installed at the bottom of the transverse structure (2). The transverse structure (2) is used to drive the detection and adjustment structure (3) to move horizontally. The gantry (13) is adapted to slide on the movable slide (12) to drive the detection adjustment structure (3) to move above the welded part (5). The detection adjustment structure (3) adjusts the height, tilt angle and tilt direction of the detection component (322) according to the position of the welded part (5), so that the detection component (322) can detect the welded part on the welded part (5).

2. The welding non-destructive testing device according to claim 1, characterized in that, The transverse structure (2) includes a first drive member (21) installed in the transverse section of the gantry (13), a threaded rod (22) installed at the output end of the first drive member (21), and a moving block (23) threaded on the outside of the threaded rod (22) and slidably connected to the transverse section of the gantry (13). The transverse section of the gantry (13) is vertically provided with a moving groove that is slidably adapted to the moving block (23).

3. The welding non-destructive testing device according to claim 2, characterized in that, The lifting assembly (31) includes a fixed plate (311) installed at the bottom of the moving block (23), a plurality of first electric push rods (312) installed vertically at the bottom of the fixed plate (311), and a lifting seat (313) installed at the bottom of the first electric push rods (312). The rotating assembly (34) is installed in the lifting seat (313).

4. The welding non-destructive testing device according to claim 3, characterized in that, The rotating assembly (34) includes a second gear (341) rotatably mounted inside the lifting seat (313), a second drive member (342) mounted on the outside of the lifting seat (313), a third gear (343) mounted on the output end of the second drive member (342) and meshing with the second gear (341), and a plurality of connecting rods (344) vertically mounted on the bottom of the second gear (341) and fixedly connected to the mounting base (321).

5. The welding non-destructive testing device according to claim 1, characterized in that, The mounting base (321) is a rectangular cylindrical shape, and the inner wall size of the mounting base (321) is slidably adapted to the outer wall size of the detection component (322).

6. The welding non-destructive testing device according to claim 1, characterized in that, The outer side of the detection component (322) is fitted with a mounting sleeve (3221). Two rotating rods (3222) are horizontally symmetrically arranged on the outer periphery of the mounting sleeve (3221) and are rotatably connected to the mounting base (321). The rotating rods (3222) horizontally penetrate the mounting base (321).

7. The welding non-destructive testing device according to claim 6, characterized in that, The tilt adjustment assembly (33) includes a first gear (333) located on one side of the mounting base (321) in the width direction and coaxially arranged with the rotating rod (3222), an electric slide rail (331) mounted on one side of the mounting base (321) in the width direction and located above the first gear (333), and a rack (332) mounted on the bottom of the movable seat of the electric slide rail (331) and meshing with the first gear (333). The first gear (333) is fixedly connected to the rotating rod (3222). A connecting block (3321) is installed in the middle of the top surface of the rack (332), and the connecting block (3321) is detachably mounted on the bottom of the movable seat of the electric slide rail (331).

8. The welding non-destructive testing device according to claim 7, characterized in that, Also includes: The clamping structure (4) includes two clamping plates (43) arranged horizontally and symmetrically between the two movable slides (12) along the length of the base (11), a number of limiting sliders (42) installed at the bottom of the clamping plates (43) and vertically inserted into the base (11), and a number of second electric push rods (41) installed on the lower surface of the base (11) and fixedly connected to the limiting sliders (42). The number of second electric push rods (41) are divided into two groups and symmetrically arranged on the side of the two clamping plates (43) that are away from each other.

9. The welding non-destructive testing device according to claim 8, characterized in that, The base (11) is vertically provided with a limiting groove that is adapted to slide with the limiting slider (42), and the two clamps (43) are horizontally provided with V-shaped grooves on opposite sides.

Citation Information

Patent Citations

  • Welding defect nondestructive testing device

    CN216608730U