A non-destructive testing and repairing device for electrically welded joints

Abstract

The utility model discloses a kind of electric welding joint nondestructive testing and repair device, it is related to welding detection and repair technical field, including fixed seat, lifting structure is located in fixed seat one side, ultrasonic detection mechanism is located in lifting structure one end, repair mechanism is located in lifting structure other end, and ultrasonic detection mechanism is in the detection height of welding piece and repair mechanism is in the repair height of welding piece isofacial, moving structure is transversely located in fixed seat, positioning structure is located in moving structure, welding piece can be fixed;This kind of electric welding joint nondestructive testing and repair device can realize the integrated operation of detection and repair, avoid transfer, repeat positioning, to improve efficiency, repair accuracy.

Description

Technical Field

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

[0002] Electric welded joints are critical components of structural connections, and their quality directly determines the safety and reliability of the overall structure. During the welding process, electric welded joints are prone to hidden defects such as porosity, cracks, and lack of fusion. If these defects are not detected and repaired in a timely manner, they may lead to serious safety accidents during use.

[0003] Currently, non-destructive testing methods, such as ultrasonic testing and radiographic testing, are commonly used to inspect welded joints. However, in traditional processes, ultrasonic testing equipment and welding repair equipment operate independently. After the ultrasonic testing equipment detects defects, the workpiece needs to be manually transported to the repair station. At the repair station, it needs to be repositioned before the repair operation can be performed. The entire process is not only time-consuming, but the repeated repositioning is also prone to errors, affecting the repair accuracy. Utility Model Content

[0004] The purpose of this invention is to provide a non-destructive testing and repair device for welded joints. This device can achieve integrated testing and repair, avoiding transportation and repeated positioning, thereby improving efficiency and repair accuracy.

[0005] The above-mentioned optimized structure of this utility model is achieved through the following technical solution: a non-destructive testing and repair device for electric welding joints, including a fixing base; A lifting structure is provided on one side of the fixed base; An ultrasonic testing mechanism is located at one end of the lifting structure; A repair mechanism is provided at the other end of the lifting structure, and the ultrasonic testing mechanism is at the same height as the repair mechanism at the same height as the welded part. A movable structure, wherein the movable structure is laterally disposed on the fixed base; A positioning structure is provided on the movable structure to fix the welded parts.

[0006] In some embodiments, the lifting structure includes a lifting frame, which is disposed on one side of the fixed base; A lifting cylinder, wherein the lifting cylinder is located at the top of the lifting frame; Two lifting slide rails are symmetrically arranged on the side of the lifting frame near the positioning structure. The lifting platform is connected to the output shaft of the lifting cylinder and can be slidably mounted on the two lifting slide rails. The lifting platform is equipped with the ultrasonic testing mechanism and the repair mechanism.

[0007] In some embodiments, the movable structure includes a first fixing plate, which is disposed at one end of the fixing base; The second fixing plate is disposed at the other end of the fixing base; A movable motor is located at the end of the first fixed plate away from the second fixed plate; A lead screw is connected to the output shaft of the moving motor and passes through the first fixed plate, and one end of the lead screw is rotatably connected to the second fixed plate; A slide block is slidably mounted on the fixed base, and the slide block is provided with the positioning structure. The slide block is provided with the lead screw and is screwed to the lead screw.

[0008] In some embodiments, the movable structure further includes two movable slide rails, which are laterally disposed between the first fixed plate and the second fixed plate, and the slide base is slidably disposed on the two movable slide rails.

[0009] In some embodiments, the positioning structure includes a positioning frame, which is mounted on the movable structure; A positioning cylinder is located on the top of the positioning frame; A positioning plate, which is vertically disposed at the bottom of the positioning frame; A sliding plate is connected to the output end of the positioning cylinder and can slide on the positioning frame.

[0010] In some embodiments, the positioning structure further includes two positioning guide rails, which are symmetrically arranged at one end of the positioning frame, and the sliding plate is slidably provided on the two positioning guide rails.

[0011] In some embodiments, both the positioning plate and the sliding plate are provided with anti-slip pads on the side facing the weldment.

[0012] In some embodiments, a rotary motor is further included, which is disposed on the movable structure and the output end of the rotary motor is connected to the positioning structure.

[0013] In some embodiments, a control system is also included, which is electrically connected to the lifting structure, the ultrasonic testing mechanism, the repair mechanism, the moving structure, the positioning structure, and the rotary motor, respectively.

[0014] In summary, this utility model has the following beneficial effects: (1) This utility model integrates the detection mechanism and the repair mechanism on the same fixed base, and realizes the movement of the welded parts between the detection mechanism and the repair mechanism through the moving structure, realizing the integrated operation of non-destructive testing and repair of electric welded joints. There is no need to move the welded parts during the detection and repair process, saving the workpiece transfer link, saving time and manpower, and improving work efficiency.

[0015] (2) The ultrasonic testing mechanism 3 is at the same height as the repair mechanism 4 at the same height as the welded part, which can avoid secondary positioning, improve positioning accuracy, and thus improve the defect repair effect.

[0016] (3) By using a rotary motor, it can be used in conjunction with a moving structure to adapt to complex welds such as straight lines and rings, thereby improving the comprehensiveness of the inspection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This utility model Figure 1 Enlarged view of point A in the middle.

[0018] In the diagram: 1. Fixed base; 2. Lifting structure; 21. Lifting frame; 22. Lifting cylinder; 23. Lifting slide rail; 24. Lifting platform; 3. Ultrasonic testing mechanism; 4. Repair mechanism; 5. Moving structure; 51. First fixed plate; 52. Second fixed plate; 53. Moving motor; 54. Lead screw; 55. Slide seat; 56. Moving slide rail; 6. Positioning structure; 61. Positioning frame; 62. Positioning cylinder; 63. Positioning plate; 64. Sliding plate; 65. Positioning guide rail; 7. Rotary motor. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0020] refer to Figure 1-2A non-destructive testing and repair device for welded joints includes a fixed base 1, a lifting structure 2, an ultrasonic testing mechanism 3, a repair mechanism 4, a moving structure 5, and a positioning structure 6. The fixed base 1 can be made of cast iron. The lifting structure 2 is located on one side of the fixed base 1 and can realize synchronous height adjustment of the ultrasonic testing mechanism 3 and the repair mechanism 4. The ultrasonic testing mechanism 3 is located at one end of the lifting structure 2 and can use a 2.5MHz high-frequency ultrasonic probe facing the welded part to emit and receive ultrasonic waves for defect detection. The repair mechanism 4 is located at the other end of the lifting structure 2 and can use a gas metal arc welding torch to repair defects on the welded part. The defect detection principle of the ultrasonic testing mechanism 3 and the repair principle of the repair mechanism 4 are existing technologies and will not be described in detail here. The ultrasonic testing mechanism 3 is located at the welded part. The detection height of the repair mechanism 4 is the same as the repair height of the welded part, which can avoid the repeated positioning of the welded part at the defect detection station and the repair station, thereby improving the detection and repair efficiency and the repair effect. The welding gun on the repair mechanism 4 can be equipped with an angle adjustment seat, a lateral movement, a longitudinal movement and other structures between it and the lifting structure 2 to ensure that the welding gun can smoothly repair the defects of the welded part. After the welding gun completes the repair work, it is reset through the cooperation between the various structures. When the welding gun is reset, its center is on the same horizontal plane as the center of the ultrasonic probe. This is the existing technology and will not be described in detail here. The moving structure 5 is set laterally on the fixed seat 1 and can drive the workpiece to move laterally, realizing the movement of the workpiece between the ultrasonic detection mechanism 3 and the repair mechanism 4. The positioning structure 6 is set on the moving structure 5 and can fix the welded part.

[0021] In some embodiments, the lifting structure 2 includes a lifting frame 21, a lifting cylinder 22, two lifting slide rails 23, and a lifting platform 24. The lifting frame 21 can be a frame plate, which can be fixed to one end of the fixed base 1 by expansion bolts. The lifting cylinder 22 can be fixed to the center position of the top of the lifting frame 21 by a flange, with the piston rod facing downward. The two lifting slide rails 23 are symmetrically installed on the side of the lifting frame 21 near the positioning structure 6. The lifting platform 24 can be an aluminum alloy plate. The lifting platform 24 can be slidably connected to the two lifting slide rails 23 by two guide rail sliders. The lifting platform 24 and the guide rail sliders can be rigidly connected by bolts. The center position of the top of the lifting platform 24 can be connected to the piston rod of the lifting cylinder 22. The ultrasonic testing mechanism 3 can be fixed to one side of the platform by bolts, and the repair mechanism 4 is installed at the corresponding position on the other side, and the working centers of the two are on the same horizontal plane.

[0022] In some embodiments, the movable structure 5 includes a first fixed plate 51, a second fixed plate 52, a movable motor 53, a lead screw 54, and a slide 55. The first fixed plate 51 may be a steel plate, vertically welded to the top of one end of the fixed base 1. The second fixed plate 52 has the same specifications as the first fixed plate 51, vertically welded to the top of the other end of the fixed base 1, and parallel to the first fixed plate 51. The movable motor 53 may be a servo motor (model 110ST-M06030, rated speed 3000r / min), which can be fixed to the side of the first fixed plate 51 away from the second fixed plate 52 by motor mount bolts. One end of the lead screw 54 can be coaxially connected to the output shaft of the movable motor 53 by a coupling, and the other end can be rotatably connected to the center hole of the second fixed plate 52 by an angular contact ball bearing (model 7205AC). The bearing seat can be fixed to the second fixed plate 52 by bolts. The slide 55 may be a cast aluminum part, slidably mounted on the fixed base 1, with a threaded hole in the middle that matches the lead screw 54, and a positioning structure 6 installed on the top plane.

[0023] In some embodiments, the movable structure 5 further includes two movable slide rails 56, which can be linear guide rails, arranged parallel to both sides of the lead screw 54, and their ends are respectively fixed to the first fixed plate 51 and the second fixed plate 52 by bolts. The bottom of the slide block 55 can slide with the movable slide rails 56 to form a three-point support structure, which can improve the overall connection strength and thus improve the stability of the sliding process.

[0024] In some embodiments, the positioning structure 6 includes a positioning frame 61, a positioning cylinder 62, a positioning plate 63, and a sliding plate 64. The positioning frame 61 may be a steel plate and can be vertically fixed to the slide block 55 by bolts. The positioning cylinder 62 may be vertically installed at the center of the top of the positioning frame 61 with the piston rod facing downward. The positioning plate 63 may be a steel plate and is vertically welded to the center of the bottom crossbeam of the positioning frame 61, keeping perpendicular to the two side walls of the positioning frame 61. The sliding plate 64 has the same specifications as the positioning plate 63, and its top is connected to the piston rod of the positioning cylinder 62. It can slide up and down along the positioning frame 61 to form an opposing clamping structure with the positioning plate 63 to achieve the fixed clamping of the welded parts.

[0025] In some embodiments, the positioning structure 6 further includes two positioning guide rails 65, which are symmetrically installed on the end face of the positioning frame 61 away from the moving motor 53. The sliding plate 64 slides with the positioning guide rails 65, which can ensure that the sliding plate 64 remains parallel to the positioning plate 63 during the lifting and lowering process, thereby improving the stability of the sliding plate 64 during the lifting and lowering process.

[0026] In some embodiments, the positioning plate 63 and the sliding plate 64 are provided with anti-slip pads (not shown in the figure) on the side facing the weldment. The anti-slip pads can be made of 5mm thick nitrile rubber and can be fixed by epoxy resin adhesive. The surface is pressed with diamond patterns, which can increase the friction between the positioning plate 63, the sliding plate 64 and the weldment, and effectively prevent the weldment from sliding in the clamped state.

[0027] In some embodiments, a rotary motor 7 is also included. The rotary motor 7 may be a hollow shaft servo motor (model 86HSE45, rated torque 4.5 N·m), which can be fixed to the top center of the slide block 55 by a flange. The output shaft of the motor is set laterally away from the moving motor 53. It can be rigidly connected to the positioning frame 61 by bolts, which can drive the positioning frame 61 to rotate 360°, thereby driving the welded part to rotate, so as to realize the detection and repair of the annular weld. An angle encoder may be provided on the rotary motor 7 to record the defect position of the annular weld.

[0028] In some embodiments, a control system is also included. The control system can be based on a PLC controller (model S7-1214C) and integrate a 10.1-inch touch screen. It is electrically connected to the lifting cylinder solenoid valve of the lifting structure 2, the probe controller of the ultrasonic testing mechanism 3, the welding power supply of the repair mechanism 4, the moving motor driver of the moving structure 5, the positioning cylinder solenoid valve of the positioning structure 6, and the driver of the rotary motor 7 through signal lines. It can realize the linkage control and parameter setting of each component (such as moving speed, clamping force, rotation angle, etc.).

[0029] The specific working principle is as follows: The welding parts to be inspected, such as pipes or steel plates, are placed on the positioning plate 63. The control system drives the positioning cylinder 62 to extend, pushing the sliding plate 64 down along the positioning guide rail 65, which cooperates with the positioning plate 63 to clamp the welding parts.

[0030] Based on the height of the spot weld joint on the welded part, the lifting cylinder 22 drives the lifting platform 24 to move up and down along the lifting slide rail 23, so that the probe of the ultrasonic testing mechanism 3 and the welding gun of the repair mechanism 4 are at the same height, and at the same height as the electric welding joint.

[0031] The moving motor 53 drives the lead screw 54 to rotate, causing the slide block 55 to move at a constant speed along the moving slide rail 56. At the same time, the ultrasonic testing mechanism 3 emits ultrasonic waves to scan the welded joint, and the test data is transmitted to the control system in real time. When defects such as pores or cracks are detected, the system records the coordinates of the defects.

[0032] When inspecting circumferential welds such as pipe joints, the rotary motor 7 drives the positioning frame 61 to rotate the workpiece. Combined with the lateral feed of the moving structure 5, 360° full-circumference inspection is achieved. During rotation, the angle encoder provides real-time position feedback to ensure defect location accuracy.

[0033] When the control system receives a defect signal, the ultrasonic testing mechanism 3 and the rotary motor 7 stop working, and the moving structure 5 drives the welded part to the corresponding position of the repair mechanism 4. The repair mechanism 4 performs corresponding repair operations according to the defect type (e.g., preheating is required for cracks, and welding is required for porosity) to complete the repair operation. After repair, the ultrasonic testing mechanism 3 can scan again to verify the repair quality. After the defect is repaired, the moving structure 5 drives the welded part to the corresponding position of the ultrasonic testing mechanism 3 to continue defect detection. When the welded joint on the welded part has been inspected and the defect has been completely repaired, the moving structure 5 drives the welded part to reset, the positioning structure 6 releases the welded part, and the welded part is removed, completing the entire inspection and repair work.

[0034] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A non-destructive testing and repair device for electric welded joints, characterized in that: Including the fixed base (1); A lifting structure (2) is provided on one side of the fixed base (1); An ultrasonic testing mechanism (3) is located at one end of the lifting structure (2); Repair mechanism (4), the repair mechanism (4) is located at the other end of the lifting structure (2), and the ultrasonic testing mechanism (3) is at the same height as the repair mechanism (4) at the repair height of the welded part; The movable structure (5) is horizontally disposed on the fixed base (1); The positioning structure (6) is located on the moving structure (5) and can fix the welded parts.

2. The non-destructive testing and repair device for electric welded joints according to claim 1, characterized in that: The lifting structure (2) includes a lifting frame (21), which is located on one side of the fixed base (1); A lifting cylinder (22) is located on the top of the lifting frame (21); Two lifting slide rails (23) are symmetrically arranged on the side of the lifting frame (21) near the positioning structure (6); The lifting platform (24) is connected to the output shaft of the lifting cylinder (22) and can be slidably mounted on the two lifting slide rails (23). The lifting platform (24) is provided with the ultrasonic testing mechanism (3) and the repair mechanism (4).

3. The non-destructive testing and repair device for electric welded joints according to claim 1, characterized in that: The movable structure (5) includes a first fixing plate (51), which is disposed at one end of the fixing base (1); The second fixing plate (52) is located at the other end of the fixing base (1); A movable motor (53) is located at the end of the first fixed plate (51) away from the second fixed plate (52); A lead screw (54) is connected to the output shaft of the moving motor (53) and passes through the first fixed plate (51), and one end of the lead screw (54) is rotatably connected to the second fixed plate (52); The slide (55) is slidably disposed on the fixed seat (1), and the slide (55) is provided with the positioning structure (6). The slide (55) is provided with the lead screw (54) through it and is screwed to the lead screw (54).

4. The non-destructive testing and repair device for electric welded joints according to claim 3, characterized in that: The movable structure (5) further includes two movable slide rails (56), which are laterally arranged between the first fixed plate (51) and the second fixed plate (52), and the slide base (55) is slidably provided on the two movable slide rails (56).

5. The non-destructive testing and repair device for electric welded joints according to claim 1, characterized in that: The positioning structure (6) includes a positioning frame (61), which is mounted on the movable structure (5); Positioning cylinder (62), the positioning cylinder (62) is located on the top of the positioning frame (61); Positioning plate (63), the positioning plate (63) is vertically disposed at the bottom of the positioning frame (61); A sliding plate (64) is connected to the output end of the positioning cylinder (62) and can slide on the positioning frame (61).

6. The non-destructive testing and repair device for electric welded joints according to claim 5, characterized in that: The positioning structure (6) further includes two positioning guide rails (65), which are symmetrically arranged at one end of the positioning frame (61), and the sliding plate (64) is slidably provided on the two positioning guide rails (65).

7. The non-destructive testing and repair device for electric welded joints according to claim 6, characterized in that: Both the positioning plate (63) and the sliding plate (64) are provided with anti-slip pads on the side facing the weldment.

8. The non-destructive testing and repair device for electric welded joints according to claim 1, characterized in that: It also includes a rotary motor (7), which is mounted on the moving structure (5), and the output end of the rotary motor (7) is connected to the positioning structure (6).

9. The non-destructive testing and repair device for electric welded joints according to claim 8, characterized in that: It also includes a control system, which is electrically connected to the lifting structure (2), the ultrasonic testing mechanism (3), the repair mechanism (4), the moving structure (5), the positioning structure (6), and the rotary motor (7), respectively.

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