Convenient-to-position circumferential X-ray flaw detection table

Abstract

The utility model relates to the technical field of flaw detection, and provides a circumferential X-ray flaw detection platform convenient to position, which comprises a detection platform, a rotary positioning mechanism is arranged at the top of the detection platform, and four groups of power mechanisms are symmetrically arranged at the top of the rotary positioning mechanism in a circular array manner. A first motor drives a gear to rotate, a circular toothed plate connected in a linkage and meshing mode slides on a circular sliding rail, an inner groove clamping plate, an arc-shaped clamping plate, an inner V-shaped clamping plate and a clamping block are made to rotate, the clamp is effectively switched for use, a second motor drives a bidirectional lead screw to rotate in a sliding groove plate, and therefore the clamping efficiency is improved. And the two sliding blocks are linked to slide relatively and are used for clamping and fixing the inner groove clamping plate, the arc-shaped clamping plate, the inner V-shaped clamping plate and the clamping block, so that pipes and plates with different shapes and specifications are effectively subjected to positioning welding flaw detection, and the working efficiency of welding flaw detection of the pipes and the plates is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of flaw detection, and in particular relates to a circumferential X-ray flaw detection table which is easy to position. Background Art

[0002] During welder certification and recertification training, nondestructive testing (NDT) of weld joints is required to verify welder skill. Practical testing is a key component of the weld certification exam. Radiographic testing of weld joints is performed in accordance with TSGZ6002-2010, "Specifications for the Assessment of Special Equipment Welding Operators," to ensure welders meet certification requirements. NDT utilizes an X-ray circumferential flaw detector. Radiographic testing is performed on weld joints of plate butt welds (hereinafter referred to as plate joints) and pipe butt welds (hereinafter referred to as pipe joints). Plate joints are typically 300mm x 200mm in size, while pipe joints are sized 76mm or less. Pipe joints with diameters less than 76mm are more common in actual welding training and certification, while those with diameters greater than 76mm are less common. Pipe joints are typically 400mm long, with the weld seam centered.

[0003] A known Chinese publicly authorized utility model (publication number: CN159152793U) discloses a movable support for circumferential X-ray flaw detection, comprising a support, multiple sets of plate specimen positioning fixtures, and multiple sets of tube specimen positioning fixtures. The support comprises an annular support platform and support legs connected to the lower surface of the support platform. The multiple sets of plate specimen positioning fixtures and tube specimen positioning fixtures are arranged at equal intervals along the circumference of the support platform. The plate specimen positioning fixture includes a slot for receiving the plate specimen, and the tube specimen positioning fixture includes a clamping plate that abuts the outer wall of the tube specimen. Compared to the prior art method of using boxes, bricks, pads, etc. to raise and adjust the distance of welded specimens, this method is simpler and more efficient to operate, and it also enhances the stability of the welded specimen, ensuring a smooth inspection process.

[0004] However, in the implementation of relevant technologies, it was found that it is difficult to switch the fixtures for plates and pipes of different rules in the existing circumferential X-ray flaw detection, resulting in unstable clamping and fixation of the plates and pipes being inspected, thereby reducing the work efficiency of weld flaw detection between pipes and plates. Therefore, a circumferential X-ray flaw detection inspection table that is easy to position is proposed. Utility Model Content

[0005] The utility model proposes a circumferential X-ray flaw detection test table which is easy to position, and solves the problem in the related art that it is difficult to switch the clamps for plates and pipes of different rules, resulting in unstable clamping and fixation of the plates and pipes to be tested, thereby reducing the working efficiency of the weld flaw detection of pipes and plates.

[0006] The technical solution of the utility model is as follows: a circumferential X-ray flaw detection test bench that is easy to position, comprising a test bench, a top of which is provided with a rotation positioning mechanism, and a top circular array of the rotation positioning mechanism symmetrically provided with four groups of power mechanisms;

[0007] The top of each of the four power mechanisms is provided with an inner groove clamping plate, an arc-shaped clamping plate, an inner V-shaped clamping plate and a clamping block;

[0008] A placement frame is fixedly installed on the top axis of the detection table, and an X-ray flaw detector is placed inside the placement frame.

[0009] Preferably, the rotation positioning mechanism includes a circular slide rail fixedly mounted on the top of the detection platform, and a turntable is slidably connected to the circular slide rail.

[0010] Preferably, a motor 1 is fixedly mounted on the top of the turntable, and a gear is fixedly mounted on the output end of the motor 1.

[0011] Preferably, a circular tooth plate is fixedly mounted on the outer side wall of the turntable, and the circular tooth plate is meshingly connected with the gear.

[0012] Preferably, the four groups of power mechanisms include four slide plates fixedly connected to the top of the turntable, and the four slide plates are distributed in a circular array on the top of the turntable.

[0013] Preferably, the interior of the slide plate is connected to a bidirectional screw for rotation, and the interior of the slide plate is connected to two sliders for relative sliding. A thread passes through the bidirectional screw and the two sliders. Motor 2 is fixedly installed on one side of the slide plate, and the output end of motor 2 extends to the interior of the slide plate and is fixedly connected to one end of the bidirectional screw.

[0014] The working principle and beneficial effects of the utility model are as follows:

[0015] The motor drives the gear to rotate, and the circular toothed plate engaged in the linkage slides on the circular slide rail, so that the inner groove clamping plate, the arc-shaped clamping plate, the inner V-shaped clamping plate and the clamping block rotate, thereby effectively switching the clamp for use; the motor drives the bidirectional screw rod to rotate inside the slide plate, and the two sliders slide relative to each other, so as to clamp and fix the inner groove clamping plate, the arc-shaped clamping plate, the inner V-shaped clamping plate and the clamping block; the inner groove clamping plate is used to clamp and fix the horizontally placed welding plate; the arc-shaped clamping plate is used to clamp and fix the round tube; the inner V-shaped clamping plate is used to clamp and fix the square tube; the clamping block is used to clamp and fix the irregular plate, thereby effectively performing positioning welding flaw detection on pipes and plates of different shapes and specifications, thereby improving the working efficiency of pipe and plate welding flaw detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0017] Figure 1 This is a schematic diagram of the overall three-dimensional structure proposed by the utility model;

[0018] Figure 2 This is a side view schematic diagram of the three-dimensional structure proposed by the utility model;

[0019] Figure 3 This is a schematic diagram of the cross-sectional three-dimensional structure of the testing platform proposed in the utility model;

[0020] In the figure: 1. Inspection table; 2. Rotary positioning mechanism; 21. Circular slide rail; 22. Turntable; 23. Circular gear plate; 24. Motor 1; 25. Gear; 3. Power mechanism; 31. Slide plate; 32. Bidirectional lead screw; 33. Slider; 34. Motor 2; 4. Inner groove clamping plate; 5. Arc clamping plate; 6. Inner V-shaped clamping plate; 7. Clamping block; 8. Placement frame; 9. X-ray flaw detector. DETAILED DESCRIPTION

[0021] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0022] See also Figure 1 - Figure 3 A circumferential X-ray flaw detection test platform that is easy to position includes a test platform 1. A rotation positioning mechanism 2 is provided on the top of the test platform 1. Four groups of power mechanisms 3 are symmetrically provided in a circular array on the top of the rotation positioning mechanism 2.

[0023] The top of each group of four power mechanisms 3 is provided with an inner groove clamping plate 4, an arc-shaped clamping plate 5, an inner V-shaped clamping plate 6 and a clamping block 7;

[0024] A placement frame 8 is fixedly installed on the top axis of the detection platform 1, and an X-ray flaw detector 9 is placed inside the placement frame 8.

[0025] The technical solution provided by this embodiment is as follows: when in use, firstly, the X-ray flaw detector 9 is placed and fixed inside the placement frame 8, and the X-ray flaw detector 9 effectively detects flaws on the inspection object;

[0026] By rotating the positioning mechanism 2, the inner groove clamping plate 4, the arc-shaped clamping plate 5, the inner V-shaped clamping plate 6 and the clamping block 7 are driven to rotate, so that the clamps are effectively switched and used. Four sets of power mechanisms 3 are used to drive the inner groove clamping plate 4, the arc-shaped clamping plate 5, the inner V-shaped clamping plate 6 and the clamping block 7 to clamp and fix. The inner groove clamping plate 4 is used to clamp and fix the horizontally placed welding plate, the arc-shaped clamping plate 5 is used to clamp and fix the round tube, the inner V-shaped clamping plate 6 is used to clamp and fix the square tube, and the clamping block 7 is used to clamp and fix the irregular plate, thereby improving the working efficiency of pipe and plate welding flaw detection.

[0027] Furthermore, the rotation positioning mechanism 2 includes a circular slide rail 21 fixedly mounted on the top of the detection platform 1, a turntable 22 is slidably connected to the circular slide rail 21, a motor 24 is fixedly mounted on the top of the turntable 22, a gear 25 is fixedly mounted on the output end of the motor 24, and a circular gear plate 23 is fixedly mounted on the outer wall of the turntable 22, and the circular gear plate 23 is meshingly connected to the gear 25.

[0028] Specifically, by starting motor 1 24, motor 1 24 drives gear 25 to rotate, and the circular toothed plate 23 in linkage meshing connection slides on the circular slide rail 21, which is used to switch between the inner groove clamping plate 4, the arc clamping plate 5, the inner V-shaped clamping plate 6 and the clamping block 7.

[0029] Furthermore, the four-group power mechanism 3 includes four slide plates 31 fixedly connected to the top of the turntable 22. The four slide plates 31 are distributed in a circular array on the top of the turntable 22. The inside of the slide plate 31 is rotatably connected to a bidirectional screw rod 32. The inside of the slide plate 31 is relatively slidably connected to two sliders 33. A thread passes through the bidirectional screw rod 32 and the two sliders 33. A motor 2 34 is fixedly installed on one side of the slide plate 31. The output end of the motor 2 34 extends to the inside of the slide plate 31 and is fixedly connected to one end of the bidirectional screw rod 32.

[0030] Specifically, by starting the second motor 34, the second motor 34 drives the bidirectional screw 32 to rotate inside the slide plate 31, and the two sliders 33 slide relative to each other to clamp and fix the detection object;

[0031] It should be noted that the four power mechanisms 3 can drive the inner groove clamping plate 4, the arc clamping plate 5, the inner V-shaped clamping plate 6 and the clamping block 7 to move, effectively clamping test objects of different specifications.

Claims

1. A circumferential X-ray flaw detection test bench that is easy to position, comprising a test bench (1), characterized in that: A rotation positioning mechanism (2) is provided on the top of the detection platform (1), and four groups of power mechanisms (3) are symmetrically provided in a circular array on the top of the rotation positioning mechanism (2); The top of each of the four power mechanisms (3) is provided with an inner groove clamping plate (4), an arc-shaped clamping plate (5), an inner V-shaped clamping plate (6) and a clamping block (7); A placement frame (8) is fixedly mounted on the top axis of the detection table (1), and an X-ray flaw detector (9) is placed inside the placement frame (8).

2. The circumferential X-ray flaw detection platform with easy positioning according to claim 1, characterized in that: The rotary positioning mechanism (2) comprises a circular slide rail (21) fixedly mounted on the top of the detection platform (1), and a turntable (22) is slidably connected to the circular slide rail (21).

3. The circumferential X-ray flaw detection platform with easy positioning according to claim 2, characterized in that: A motor 1 (24) is fixedly mounted on the top of the turntable (22), and a gear (25) is fixedly mounted on the output end of the motor 1 (24).

4. The circumferential X-ray flaw detection platform with easy positioning according to claim 3, characterized in that: A circular toothed plate (23) is fixedly mounted on the outer side wall of the rotating disk (22), and the circular toothed plate (23) is meshingly connected to the gear (25).

5. The circumferential X-ray flaw detection platform with easy positioning according to claim 2, characterized in that: The four groups of power mechanisms (3) include four slide plates (31) fixedly connected to the top of the turntable (22), and the four slide plates (31) are distributed in a circular array on the top of the turntable (22).

6. The circumferential X-ray flaw detection platform with easy positioning according to claim 5, characterized in that: The interior of the chute plate (31) is rotatably connected to a bidirectional screw rod (32), and the interior of the chute plate (31) is relatively slidably connected to two sliders (33), and threads penetrate between the bidirectional screw rod (32) and the two sliders (33). A second motor (34) is fixedly installed on one side of the chute plate (31), and the output end of the second motor (34) extends to the interior of the chute plate (31) and is fixedly connected to one end of the bidirectional screw rod (32).

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