Device for detecting welding seam outside pipeline
By designing an automated pipe external weld inspection device, a stable installation and automatic inspection are achieved using positioning blocks and a gear system. This solves the problem of manual adjustment affecting the inspection effect in existing technologies and improves the stability and accuracy of the inspection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GANSU RUIDONG TECHNOLOGY CO LTD
- Filing Date
- 2025-05-22
- Publication Date
- 2026-05-05
AI Technical Summary
Existing pipe external weld inspection devices cannot automatically inspect the outer surface of pipes, requiring manual adjustment, which affects the inspection results and makes them unstable to install.
A device comprising a first arc-shaped detection frame and a second arc-shaped detection frame is designed. It achieves rapid assembly through positioning blocks and positioning slots, and uses an electric motor to drive a rotating shaft and a gear system to move the moving block and guide seat to slide. It combines a weld laser detector and a high-resolution camera to achieve automatic detection.
The system enables automatic detection of external weld seams in pipelines, improving the stability and accuracy of detection, reducing the impact of manual adjustments, and ensuring stable installation and efficient operation of the equipment.
Smart Images
Figure CN224203017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of pipeline external weld seam inspection devices, specifically pipeline external weld seam inspection devices. Background Technology
[0002] Welding quality inspection is essential to ensure the integrity, reliability, safety, and usability of welded structures. In addition to the requirements for welding technology and processes, welding quality inspection is also a crucial part of welded structure quality management. Pipeline weld inspection kits are typically used in conjunction with guide vehicles.
[0003] Currently available pipe external weld inspection devices cannot automatically inspect the outer surface of pipes. Manual adjustment of the weld inspection device is required, which affects the inspection effect. Furthermore, the device cannot be installed and fixed in place.
[0004] Therefore, it is necessary to provide a pipe external weld inspection device to solve the above-mentioned technical problems. The information disclosed in this background section is only intended to enhance the understanding of the overall background of this utility model, and is not necessarily to be regarded as an admission or in any way implying that the information constitutes prior art that has become known to those skilled in the art. Utility Model Content
[0005] The purpose of this utility model is to provide a pipeline external weld inspection device, which solves the problems of the pipeline external weld inspection devices proposed in the background art, which cannot automatically inspect the outer surface of the pipeline, require manual adjustment of the weld inspection device, which affects the inspection effect of the weld, and cannot install and fix the inspection device.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a pipe external weld inspection device, comprising a first arc-shaped inspection frame and a second arc-shaped inspection frame. The right side of the first arc-shaped inspection frame contacts the left side of the second arc-shaped inspection frame. Positioning blocks are installed around the right side of the first arc-shaped inspection frame, and positioning grooves are formed around the left side of the second arc-shaped inspection frame. The right side of the positioning blocks penetrates the inner cavity of the positioning grooves. A first arc-shaped toothed plate is installed in the inner cavity of the first arc-shaped inspection frame, and a second arc-shaped toothed plate is installed in the inner cavity of the second arc-shaped inspection frame. Gears mesh on the front and rear sides of the right side of the inner cavity of the first arc-shaped toothed plate. A rotating shaft is sleeved at the axis of the gear. A motor is installed on the front of the rotating shaft. A weld laser detector is sleeved on the surface of the rotating shaft and inside the gear. Guide grooves are formed on the front and rear sides of the first arc-shaped toothed plate and the front and rear sides of the second arc-shaped toothed plate. A guide seat is slidably connected to the inner cavity of the guide groove. A moving block is installed on the outer side of the guide seat, and a moving seat is installed on the top of the moving block.
[0007] Preferably, the front of the rotating shaft extends through the front of the movable base, and the back of the motor is fixed to the front of the movable base.
[0008] Preferably, a bearing housing is fitted onto the back of the rotating shaft, and the back of the bearing housing is fixed to the front of the movable seat.
[0009] Preferably, the surface of the gear is provided with a first tooth, and the inner cavities of the first and second arc-shaped tooth plates are provided with a second tooth that cooperates with the first tooth.
[0010] Preferably, fixing blocks are installed on the rear sides of both sides of the first arc-shaped detection frame and the front sides of both sides of the second arc-shaped detection frame, and mounting pins are provided on the outer side of the fixing blocks and on both sides of the first arc-shaped detection frame.
[0011] Preferably, the rear side of the mounting pin extends through the rear side of the fixing block, and a nut is provided on the surface of the mounting pin.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. This utility model, by setting a fixing block and a mounting pin, fixes the first and second arc-shaped detection frames, thus improving their performance during use and preventing them from shaking. By setting a positioning block and a positioning groove, the first and second arc-shaped detection frames are facilitated to be assembled, allowing for quick positioning during installation and increasing their stability.
[0014] 2. This utility model, by setting guide grooves and guide seats, makes the moving block and moving seat slide more smoothly on the outer surfaces of the first and second arc-shaped toothed plates, reducing the friction between the moving block and the outer surfaces of the first and second arc-shaped toothed plates. The moving seat facilitates the installation and fixation of the motor, and also increases the stability of the motor during use. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of the structure of this utility model;
[0016] Figure 2 This is a top view of the structure of the first arc-shaped detection frame and the second arc-shaped detection frame of this utility model;
[0017] Figure 3 This is a schematic diagram of the right side of the structure of the first arc-shaped detection frame and the first arc-shaped toothed plate of this utility model;
[0018] Figure 4This is a schematic diagram of the left side of the second arc-shaped detection frame and the second arc-shaped toothed plate structure of this utility model;
[0019] Figure 5 This is a top view of the left side of the electric motor and gear structure of this utility model.
[0020] In the figure: 1. First arc-shaped detection frame; 2. Second arc-shaped detection frame; 3. Positioning block; 4. Positioning groove; 5. First arc-shaped toothed plate; 6. Second arc-shaped toothed plate; 7. Gear; 8. Rotating shaft; 9. Motor; 10. Weld laser detector; 11. Guide groove; 12. Guide seat; 13. Moving block; 14. Moving seat; 15. Fixed block; 16. Mounting pin. Detailed Implementation
[0021] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0023] It should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0024] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0025] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] Please see Figure 1-5 The pipe external weld inspection device includes a first arc-shaped inspection frame 1 and a second arc-shaped inspection frame 2. The right side of the first arc-shaped inspection frame 1 contacts the left side of the second arc-shaped inspection frame 2. Positioning blocks 3 are installed around the right side of the first arc-shaped inspection frame 1, and positioning grooves 4 are formed around the left side of the second arc-shaped inspection frame 2. The right side of the positioning blocks 3 penetrates the inner cavity of the positioning grooves 4. A first arc-shaped toothed plate 5 is installed in the inner cavity of the first arc-shaped inspection frame 1, and a second arc-shaped toothed plate 6 is installed in the inner cavity of the second arc-shaped inspection frame 2. Gears 7 are meshed on the front and rear sides of the right side of the inner cavity of plate 5. A rotating shaft 8 is sleeved at the shaft center of gear 7. A motor 9 is installed on the front of rotating shaft 8. A weld laser detector 10 is sleeved on the surface of rotating shaft 8 and inside gear 7. Guide grooves 11 are opened on the front and rear sides of the first arc-shaped toothed plate 5 and the front and rear sides of the second arc-shaped toothed plate 6. A guide seat 12 is slidably connected to the inner cavity of the guide groove 11. A moving block 13 is installed on the outer side of the guide seat 12. A moving seat 14 is installed on the top of the moving block 13.
[0027] The front of the rotating shaft 8 passes through the front of the movable seat 14, and the back of the motor 9 is fixed to the front of the movable seat 14. First, the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 are placed on the outer surface of the welded pipe to be inspected. The first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 are fixed by the fixing block 15 and the mounting pin 16, which increases the stability of the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 during use.
[0028] A bearing seat is fitted on the back of the rotating shaft 8, and the back of the bearing seat is fixed to the front of the movable seat 14. The diameter of the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 after fixing is larger than the diameter of the external pipe, so that the weld seam on the outer surface of the pipe can be inspected.
[0029] The surface of gear 7 is equipped with teeth one, and the inner cavity of the first arc-shaped tooth plate 5 and the second arc-shaped tooth plate 6 is equipped with teeth two that cooperate with teeth one. Then the motor 9 is started, and the motor 9 drives the rotating shaft 8 to start rotating. The rotating shaft 8 drives gear 7 to rotate around the first arc-shaped tooth plate 5 and the second arc-shaped tooth plate 6.
[0030] Fixing blocks 15 are installed on the rear sides of both sides of the first arc-shaped detection frame 1 and the front sides of both sides of the second arc-shaped detection frame 2. Mounting pins 16 are provided on the outer side of the fixing blocks 15 and on both sides of the first arc-shaped detection frame 1. The rotating gear 7 of the motor 9 meshes with the first arc-shaped toothed plate 5 and the second arc-shaped toothed plate 6, which drives the moving seat 14 and the moving block 13 to start rotating. The moving block 13 drives the guide seat 12 to slide in the inner cavity of the guide groove 11, which increases the stability of the motor 9 when rotating. Through the above steps, the weld seam on the outer surface of the pipe can be automatically detected.
[0031] The rear side of the mounting pin 16 penetrates the rear side of the fixing block 15. A nut is provided on the surface of the mounting pin 16. The weld laser detector 10 projects a laser beam of a specific wavelength, such as red or blue laser, onto the surface of the workpiece through a laser emitter to form a linear or dot matrix pattern. When the laser irradiates the weld area, the laser pattern will deform due to changes in the weld geometry, such as height difference or gap, such as broken lines, bends or breaks. A high-resolution industrial camera, such as a CCD or CMOS camera, captures these deformed laser patterns in real time to generate two-dimensional or three-dimensional images.
[0032] In use, firstly, the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 are fitted onto the outer surface of the welded pipe to be inspected. The first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 are fixed using the fixing block 15 and the mounting pin 16, increasing the stability of the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 during use. The diameter of the first arc-shaped detection frame 1 and the second arc-shaped detection frame 2 after fixing is larger than the diameter of the external pipe, so that the weld seam on the outer surface of the pipe can be inspected. Then, the motor 9 is started, and the motor 9 drives the rotating shaft 8 to rotate. The rotating shaft 8 drives the gear 7 to rotate around the first arc-shaped toothed plate 5 and the second arc-shaped toothed plate 6. The rotation of the motor 9 and the engagement of the gear 7 with the first arc-shaped toothed plate 5 and the second arc-shaped toothed plate 6 drive the moving seat 14 and the moving block 13 to rotate. 3. The guide seat 12 slides within the inner cavity of the guide groove 11, increasing the stability of the motor 9 during rotation. Through the above steps, the weld seam on the outer surface of the pipe can be automatically detected. The weld seam laser detector 10 projects a laser beam of a specific wavelength, such as red or blue laser, onto the workpiece surface through a laser emitter, forming a linear or dot matrix pattern. When the laser irradiates the weld seam area, due to changes in the weld seam geometry, such as height difference or gap, the laser pattern will deform, such as a broken line, bending, or breaking. A high-resolution industrial camera, such as a CCD or CMOS camera, captures these deformed laser patterns in real time, generating two-dimensional or three-dimensional images. The weld seam laser detector 10 is prior art and will not be described in detail here. The contents not described in detail in this description are prior art known to those skilled in the art.
[0033] All standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Since this utility model is mainly used to protect mechanical devices, this utility model will not explain the control method and circuit connection in detail. The external controller mentioned in the specification can play a control role for the electrical components mentioned in this article, and the external controller is a conventional known device.
[0034] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0036] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. A pipe external weld inspection device, comprising a first arc-shaped inspection frame (1) and a second arc-shaped inspection frame (2), characterized in that: The right side of the first arc-shaped detection frame (1) contacts the left side of the second arc-shaped detection frame (2). Positioning blocks (3) are installed around the right side of the first arc-shaped detection frame (1). Positioning grooves (4) are opened around the left side of the second arc-shaped detection frame (2). The right side of the positioning block (3) penetrates the inner cavity of the positioning groove (4). A first arc-shaped toothed plate (5) is installed in the inner cavity of the first arc-shaped detection frame (1), and a second arc-shaped toothed plate (6) is installed in the inner cavity of the second arc-shaped detection frame (2). Gears mesh on the front and rear sides of the right side of the inner cavity of the first arc-shaped toothed plate (5). 7) A rotating shaft (8) is sleeved at the center of the gear (7). A motor (9) is installed on the front of the rotating shaft (8). A weld laser detector (10) is sleeved on the surface of the rotating shaft (8) and inside the gear (7). Guide grooves (11) are opened on the front and rear sides of the first arc-shaped tooth plate (5) and the front and rear sides of the second arc-shaped tooth plate (6). A guide seat (12) is slidably connected to the inner cavity of the guide groove (11). A moving block (13) is installed on the outer side of the guide seat (12). A moving seat (14) is installed on the top of the moving block (13).
2. The pipe external weld inspection device according to claim 1, characterized in that: The front of the rotating shaft (8) passes through the front of the movable seat (14), and the back of the motor (9) is fixed to the front of the movable seat (14).
3. The pipe external weld inspection device according to claim 1, characterized in that: The back of the rotating shaft (8) is fitted with a bearing seat, and the back of the bearing seat is fixed to the front of the movable seat (14).
4. The pipe external weld inspection device according to claim 1, characterized in that: The surface of the gear (7) is fitted with a tooth, and the inner cavities of the first arc-shaped tooth plate (5) and the second arc-shaped tooth plate (6) are fitted with a tooth that works in conjunction with the tooth.
5. The pipe external weld inspection device according to claim 1, characterized in that: Fixing blocks (15) are installed on the rear sides of both sides of the first arc-shaped detection frame (1) and the front sides of both sides of the second arc-shaped detection frame (2). Mounting pins (16) are provided on the outer side of the fixing blocks (15) and on both sides of the first arc-shaped detection frame (1).
6. The pipe external weld inspection device according to claim 5, characterized in that: The rear side of the mounting pin (16) penetrates the rear side of the fixing block (15), and a nut is provided on the surface of the mounting pin (16).