Convenient grounding weld inspection auxiliary equipment

Abstract

The utility model discloses convenient grounding welding seam inspection auxiliary equipment, belongs to the technical field of welding seam inspection, and aims to solve the technical problems that in the prior art, grounding welding seam appearance inspection is large in operation difficulty and not convenient and efficient enough. The convenient grounding weld inspection auxiliary equipment comprises a main lens cone, a periscope cone is arranged at the bottom end of the main lens cone in a vertically bent mode, and the periscope cone is communicated with the main lens cone. According to the convenient grounding welding seam inspection auxiliary equipment, by means of reflection and propagation of light in the main lens cone and the periscope cone, an inspector does not need to bend down to approach a grounding welding seam for appearance inspection, the flaw detection head is matched to approach the position of the welding seam during observation, high-frequency ultrasonic waves can be emitted through ultrasonic waves of the flaw detection head, and the high-frequency ultrasonic waves are emitted to the detected welding seam; and then the internal quality of the welding seam is analyzed according to the time, the intensity and the characteristics of the echo, data are fed back through the detector, and the inspection of the grounding welding seam is simpler, more convenient and more efficient.

Description

Technical Field

[0001] The utility model belongs to the technical field of weld inspection, and in particular relates to a convenient ground weld inspection auxiliary device. Background Art

[0002] In electrical engineering, in order to ensure the safety and reliability of the electrical system, it is necessary to weld the grounding device (such as grounding electrode, grounding grid, etc.) to the conductive parts such as the metal casing or frame of the electrical equipment to ensure that the potential of the electrical equipment is equal to or close to the earth potential, thereby protecting people and equipment safety and preventing electrical accidents.

[0003] Ground welding is usually done by arc welding, including manual arc welding, automatic or semi-automatic arc welding, etc. In order to ensure that the quality and performance of the welded joint meet the design requirements, thereby ensuring the safety and reliability of the electrical system, the ground weld needs to be inspected after the ground welding is completed. The inspection methods include appearance inspection, non-destructive testing and destructive testing. Among them, the appearance inspection is to directly observe the weld surface with the naked eye or with the help of a magnifying glass to check whether there are defects such as pores, cracks, undercuts, weld nodules, etc., and check whether the weld size meets the design requirements, such as weld width, height, and excess height. However, the ground weld is usually close to the ground, and the inspector is often required to bend over or even put his eyes close to the ground for appearance inspection, which increases the operational difficulty of the ground weld appearance inspection and reduces the inspection work efficiency. For this reason, the present application proposes a convenient ground weld inspection auxiliary equipment. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a convenient grounding weld inspection auxiliary equipment, aiming to solve the technical problems that the appearance inspection of grounding welds under the existing technology is difficult to operate and not convenient and efficient enough.

[0005] Technical Solution

[0006] In order to solve the above technical problems, the utility model provides a convenient ground weld inspection auxiliary equipment, including a main lens barrel, a periscope barrel is vertically bent at the bottom end of the main lens barrel, the periscope barrel and the main lens barrel are connected, a front observation mirror is provided at the end of the periscope barrel away from the main lens barrel, a convex lens is assembled in the front observation mirror, and a reflector is provided on the inner and outer angle sides of the connection between the main lens barrel and the periscope barrel, and the reflector is tilted at a 45° angle.

[0007] Preferably, lighting lamps are provided on the outer wall of the front observation mirror, and a pair of lighting lamps are symmetrically arranged.

[0008] Preferably, a battery is mounted on the outer wall of the main barrel near one end of the periscope barrel, and wires for connecting the battery and the lighting lamp are arranged on the outer wall of the periscope barrel.

[0009] Preferably, a secondary lens barrel is movably sleeved on one end of the main lens barrel away from the periscope lens barrel, and a rear observation mirror is assembled on one end of the secondary lens barrel away from the periscope lens barrel, and a flat lens is assembled in the rear observation mirror.

[0010] Preferably, a first handle is provided on the outer wall of the secondary barrel away from the end of the main barrel, a guide plate is provided on one side of the main barrel and the secondary barrel along the same length direction, one end of the guide plate is fixedly connected to the end of the main barrel close to the periscope barrel, and a second handle is provided on the end of the guide plate facing the secondary barrel.

[0011] Preferably, a guide slide is provided on the outer wall of the secondary lens barrel on the side facing the guide plate, and the guide slide is slidably nested with the guide plate.

[0012] Preferably, the guide slide has a T-shaped cross section, a rubber pad is bonded to the side of the guide slide away from the secondary barrel, and a positioning bolt that abuts the rubber pad is threadedly inserted into the end of the guide plate facing the secondary barrel.

[0013] Preferably, a detector is fixedly connected to one side of the top end of the main barrel, and the detector is connected to the flaw detection head wire at the bottom end of the main barrel through the inner wall wiring of the main barrel.

[0014] Beneficial effects

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model is provided with a main lens barrel and a periscope lens barrel. The inspector holds the first handle and the second handle with both hands respectively to operate, moves the front observation mirror to the grounding weld, and observes the rear observation mirror with his eyes. In the periscope lens barrel, the main lens barrel and the auxiliary lens barrel, the light is reflected and transmitted by the convex lens, the reflector and the flat lens. The inspector can directly observe the welding condition of the grounding weld at the rear observation mirror, check whether there are defects such as pores, cracks, undercuts, weld nodules, etc. at the grounding weld, and check whether the weld meets the design requirements, thereby achieving the purpose of inspecting the appearance of the grounding weld. The provision of the convex lens can It can visually magnify the weld, which is more conducive to the appearance inspection of the grounding weld. In addition, this grounding weld appearance inspection method uses the reflection and propagation of light in the main tube and periscope tube to assist. The inspector does not need to bend down to the ground to bring his eyes close to the ground weld for appearance inspection, which reduces the difficulty of inspection. While observing, the flaw detection head can be close to the weld position. High-frequency ultrasonic waves can be emitted by the flaw detection head and directed to the weld to be inspected. Then, the internal quality of the weld is analyzed according to the time, intensity and characteristics of the echo. The data feedback by the detector makes the inspection of the grounding weld simpler and more efficient.

[0017] In the present invention, by fitting the secondary lens barrel and the main lens barrel together and pulling the secondary lens barrel to move, the distance between the rear observation mirror and the periscope lens barrel can be adjusted, and by tightening the positioning bolt against the rubber pad on the guide slide, the secondary lens barrel and the main lens barrel can be relatively positioned. This adjustment structure can adapt to the appearance inspection of inspectors of different heights and ground welds of different heights, and has high flexibility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic diagram of the three-dimensional structure of the main lens barrel of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the front observation mirror in the present invention from the side;

[0021] Figure 3 This is a schematic diagram of the three-dimensional structure of the periscope barrel in the present utility model;

[0022] Figure 4 This is a schematic diagram of the three-dimensional structure of the flat lens in the present utility model;

[0023] Figure 5 It is a schematic diagram of the three-dimensional structure of the guide plate in the present utility model.

[0024] The marks in the accompanying drawings are: 1. Main lens barrel; 2. Periscope barrel; 3. Front observation mirror; 4. Light; 5. Battery; 6. Electric wire; 7. Secondary lens barrel; 8. Rear observation mirror; 9. First handle; 10. Guide plate; 11. Second handle; 12. Guide slide; 13. Reflector; 14. Convex lens; 15. Rubber pad; 16. Positioning bolt; 17. Flat lens; 18. Detector; 19. NDT head. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the 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.

[0026] This embodiment provides a convenient grounding weld inspection auxiliary device, the structural diagram of which is as follows: Figure 1-Figure 5 As shown, it includes a main lens barrel 1, a periscope lens barrel 2 is vertically bent at the bottom end of the main lens barrel 1, the periscope lens barrel 2 and the main lens barrel 1 are connected, a front observation mirror 3 is provided at the end of the periscope lens barrel 2 away from the main lens barrel 1, a convex lens 14 is assembled in the front observation mirror 3, a reflector 13 is provided on the inner outer angle side of the connection between the main lens barrel 1 and the periscope lens barrel 2, and the reflector 13 is tilted at a 45° angle. A detector 18 is fixedly connected to one side of the top of the main lens barrel (1), and the detector 18 is connected to the flaw detection head 19 at the bottom end of the main lens barrel 1 through the inner wall wiring of the main lens barrel 1. Through this structural method, the main lens barrel 1 is held in hand and the front observation mirror 3 is moved to the grounded weld. Then the inspector observes the rear observation mirror 8 at the end of the main lens barrel 1 away from the periscope lens 2. In the periscope lens barrel 2 and the main lens barrel 1, the light is reflected and propagated by the convex lens 14 and the reflector 13. The inspector can The rear observation mirror 8 can directly observe the welding condition of the grounding weld, check whether there are defects such as pores, cracks, undercuts, weld nodules, etc. on the grounding weld, check whether the weld meets the design requirements, and achieve the purpose of appearance inspection of the grounding weld. The setting of the convex lens 14 can visually magnify the weld, which is more conducive to the appearance inspection of the grounding weld. The appearance inspection method of the grounding weld utilizes the reflection and propagation of light in the main lens barrel 1 and the periscope barrel 2 to assist. The inspector does not need to bend down to the ground to bring his eyes close to the ground weld, which reduces the difficulty of inspection. While observing, the flaw detection head 19 is close to the weld position, and high-frequency ultrasonic waves can be emitted by the flaw detection head 19 and directed to the weld to be inspected. Then, the internal quality of the weld is analyzed according to the time, intensity and characteristics of the echo. The data is fed back by the detector 18, and the inspection of the grounding weld is simpler and more efficient.

[0027] In this embodiment, a pair of symmetrical lights 4 are mounted on the outer wall of the front observation mirror 3. These lights 4 provide illumination during visual inspection of the ground weld, enabling inspection of the ground weld even in low-light conditions. A battery 5 is mounted on the outer wall of the main barrel 1 near the periscope barrel 2. Wires 6 are routed on the outer wall of the periscope barrel 2, connecting the battery 5 and the lights 4 to provide electrical energy.

[0028] In a further embodiment, a secondary lens barrel 7 is movably provided on the end of the main lens barrel 1 away from the periscope barrel 2, and a rear observation mirror 8 is installed on the end of the secondary lens barrel 7 away from the periscope barrel 2. A flat lens 17 is installed in the rear observation mirror 8. The inspector can inspect the grounding weld through the flat lens 17 at the rear observation mirror 8, and by pulling the secondary lens barrel 7 to move, the distance between the rear observation mirror 8 and the periscope barrel 2 can be adjusted, which can adapt to inspectors of different heights and the appearance inspection of grounding welds at different heights.

[0029] In this embodiment, a first handle 9 is provided on the outer wall of the secondary barrel 7 at the end away from the main barrel 1. A guide plate 10 is provided on one side of the main barrel 1 and the secondary barrel 7 along the same length. One end of the guide plate 10 is fixedly connected to the end of the main barrel 1 near the periscope barrel 2. A second handle 11 is provided on the end of the guide plate 10 facing the secondary barrel 7. The guide plate 10 and the second handle 11 can be used by the inspector for handheld operation. A guide bar 12 is provided on the outer wall of the secondary barrel 7 facing the guide plate 10. The guide bar 12 slides and nests with the guide plate 10. The guide bar 12 has a T-shaped cross-section and is used to guide the extension of the secondary barrel 7. A rubber pad 15 is bonded to the side of the guide bar 12 away from the secondary barrel 7. A positioning bolt 16 is threadedly inserted into the end of the guide plate 10 facing the secondary barrel 7, which abuts the rubber pad 15. Tightening the positioning bolt 16 and tightening it against the rubber pad 15 on the guide bar 12 can position the secondary barrel 7 relative to the main barrel 1.

[0030] Working principle: When in use, the inspector holds the first handle 9 and the second handle 11 with both hands respectively to operate, moves the front observation mirror 3 to the grounding weld, and then the inspector observes the rear observation mirror 8 with his eyes. In the periscope barrel 2, the main barrel 1 and the sub-barrel 7, the light is reflected and transmitted through the convex lens 14, the reflector 13 and the flat lens 17. The inspector can directly observe the welding condition at the grounding weld at the rear observation mirror 8, check whether there are pores, cracks, undercuts, weld nodules and other defects at the grounding weld, and check whether the weld meets the design requirements, thereby achieving the purpose of appearance inspection of the grounding weld. In addition, the setting of the convex lens 14 can visually magnify the weld, which is more conducive to the appearance inspection of the grounding weld. Moreover, this grounding weld appearance inspection method utilizes the reflection and propagation of light in the main barrel 1 and the periscope barrel 2 as an aid, and the inspector does not need to bend The waist is close to the ground so that the eyes are close to the ground weld for inspection. Then, while observing, the flaw detection head 19 is close to the weld position. High-frequency ultrasonic waves can be emitted by the flaw detection head 19 and directed to the weld to be inspected. The internal quality of the weld is analyzed according to the time, intensity and characteristics of the echo. The detector 18 is used to control and observe the data sent back by the probe, and the inspection of the ground weld is simpler and more efficient. Furthermore, through the socket fit of the secondary lens barrel 7 and the main lens barrel 1, the distance between the rear observation mirror 8 and the periscope barrel 2 can be adjusted by pulling the secondary lens barrel 7 to move. The positioning bolt 16 is tightened against the rubber pad 15 on the guide slide 12 to relatively position the secondary lens barrel 7 and the main lens barrel 1. The adjustment structure can adapt to inspectors of different heights and the appearance inspection of ground welds of different heights, and has high flexibility and adaptability.

[0031] All technical features in this embodiment can be freely combined according to actual needs.

[0032] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A convenient ground weld inspection auxiliary device, comprising a main lens barrel (1), characterized in that: The bottom end of the main lens barrel (1) is vertically bent to form a periscope barrel (2), the periscope barrel (2) and the main lens barrel (1) are connected, a front observation mirror (3) is provided at one end of the periscope barrel (2) away from the main lens barrel (1), a convex lens (14) is assembled in the front observation mirror (3), and a reflector (13) is provided on the inner outer angle side of the connection between the main lens barrel (1) and the periscope barrel (2), and the reflector (13) is inclined at an angle of 45 degrees.

2. A convenient ground weld inspection auxiliary device according to claim 1, characterized in that: An illuminating lamp (4) is provided on the outer wall of the front observation mirror (3), and a pair of the illuminating lamps (4) are symmetrically provided.

3. A convenient ground weld inspection auxiliary device according to claim 2, characterized in that: A battery (5) is mounted on the outer wall of the main lens barrel (1) close to one end of the periscope barrel (2), and an electric wire (6) for connecting the battery (5) and the lighting lamp (4) is arranged on the outer wall of the periscope barrel (2).

4. The convenient ground weld inspection auxiliary equipment according to claim 1 is characterized in that: A secondary lens barrel (7) is movably sleeved on one end of the main lens barrel (1) away from the periscope lens barrel (2); a rear observation mirror (8) is mounted on one end of the secondary lens barrel (7) away from the periscope lens barrel (2); and a flat lens (17) is mounted inside the rear observation mirror (8).

5. A convenient ground weld inspection auxiliary device according to claim 4, characterized in that: A first handle (9) is provided on the outer wall of the secondary lens barrel (7) at one end away from the main lens barrel (1), a guide plate (10) is provided on one side of the main lens barrel (1) and the secondary lens barrel (7) along the same length direction, one end of the guide plate (10) is fixedly connected to an end of the main lens barrel (1) close to the periscope barrel (2), and a second handle (11) is provided on the end of the guide plate (10) facing the secondary lens barrel (7).

6. A convenient ground weld inspection auxiliary device according to claim 5, characterized in that: A guide slide bar (12) is provided on the outer wall of the secondary lens barrel (7) facing the guide plate (10), and the guide slide bar (12) is slidably nested with the guide plate (10).

7. A convenient ground weld inspection auxiliary device according to claim 6, characterized in that: The cross section of the guide slide (12) is in a T-shaped structure. A rubber pad (15) is bonded to the side of the guide slide (12) away from the secondary lens barrel (7). A positioning bolt (16) is threadedly inserted into the end of the guide plate (10) facing the secondary lens barrel (7) and abuts against the rubber pad (15).

8. The convenient ground weld inspection auxiliary equipment according to claim 1 is characterized in that: A detector (18) is fixedly connected to one side of the top end of the main lens barrel (1), and the detector (18) is connected to a flaw detection head (19) at the bottom end of the main lens barrel (1) through wiring on the inner wall of the main lens barrel (1).

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