Pipeline inspection scanning frame
By designing a chain frame and rolling wheel structure with detachable chain links, the problems of high stability and high repeatability in the inspection of small-diameter pipes were solved, and efficient and accurate external automatic scanning was achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUNAN IND EQUIP INSTALLATION
- Filing Date
- 2025-06-26
- Publication Date
- 2026-06-30
AI Technical Summary
Existing technologies struggle to achieve high stability and repeatability in small-diameter pipe inspections through external automated scanning. Internal inspection equipment is cumbersome and costly to deploy, while external equipment is bulky and difficult to fit properly. Furthermore, portable devices struggle to identify weld or pipe wall defects.
A detachable chain frame with adjustable parts and rollers was designed. It is connected by female and male threads to adapt to different pipe diameters. The testing equipment is mounted on a mounting base and disc. The adjustable parts adjust the length, and the rollers reduce friction to ensure that the equipment fits the pipe.
It enables efficient and accurate inspection on small-diameter pipes, reduces collisions between equipment and pipes, and improves the stability and adaptability of the inspection.
Smart Images
Figure CN224436250U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of auxiliary equipment for small pipe welding, specifically a scanning frame for pipe inspection. Background Technology
[0002] Existing pipeline inspection technologies mainly include internal inspection robots (such as crawlers and intelligent inspection "pigs"), external chain or tracked scanners, and portable imaging and laser scanning equipment. Internal inspection equipment typically requires pipelines with good maneuverability, making it difficult to adapt to small-diameter or complex, curved pipeline structures. Deployment and retrieval are cumbersome, and the inspection process relies on pipeline shutdown and cleaning, resulting in high costs. While external chain scanners can be used for different types of pipelines, they are mostly designed for large-diameter pipelines, resulting in bulky structures, unstable fit, and difficulty in achieving efficient and accurate inspection on small pipelines with diameters not exceeding 350mm. Some systems rely on coded wheels for displacement feedback, and positioning accuracy is limited by pipe diameter and fit conditions. Portable imaging or 3D scanning equipment, while flexible in operation, is mainly used for external imaging and struggles to accurately identify and quantitatively analyze weld seams or internal pipe wall defects. Therefore, existing technologies still have significant shortcomings in adapting to small-diameter pipelines and achieving high stability and repeatability in automated external scanning. There is an urgent need to develop a new type of external scanning frame device that is compact, has strong fit, and is widely adaptable. Utility Model Content
[0003] The purpose of this invention is to provide a scanning frame for pipeline inspection, so as to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a scanning frame for pipeline inspection, comprising a chain frame, one end of which is fixedly fitted with a female buckle and the other end with a male buckle, the female buckle and the male buckle being snap-fitted together, the chain frame being composed of multiple detachable chain links, an adjusting component, a detection component mounting seat, and a detection component mounting plate being installed on the chain frame, the detection component mounting plate being installed on the side of the chain frame, the adjusting component and the detection component mounting seat being disposed inside the chain frame, and rolling wheels being fixedly connected to the outer walls on both sides of the chain frame.
[0005] Furthermore, the mounting base for the testing component includes a U-shaped base, with connecting grooves on two sides of the U-shaped base. A connecting pin is inserted into the connecting groove, and the connecting pin is hinged to a chain link on the chain frame. A mounting hole is provided on one side of the U-shaped base.
[0006] Furthermore, the mounting plate for the test piece includes a connecting shaft, which is fixedly connected to a chain link on the chain frame. A rotating disk is rotatably sleeved on the outer wall of the connecting shaft, and the outer wall of the rotating disk has a second mounting hole.
[0007] Furthermore, the adjusting component includes an internal thread seat one, a threaded rod, and an internal thread seat two. The internal thread seat one and the internal thread seat two are rotatably connected to the chain links on the chain frame via pins. The threaded rod is threadedly connected to both the internal thread seat one and the internal thread seat two, and the threaded rod is provided with two threads with opposite rotation directions, and the two thread segments correspond to the internal thread seat one and the internal thread seat two, respectively.
[0008] Furthermore, rolling wheels are fixedly connected to the side of the U-shaped seat and the sides of the internal thread seat one and internal thread seat two.
[0009] Furthermore, the diameter of the rotating disk is the same as the diameter of the rolling wheel, and the connection between the rotating disk and the chain frame, as well as the connection between the rolling wheel and the chain frame, are located on the same circumferential trajectory.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] 1. Adjust the number of chain links on the chain frame according to the required pipe diameter to match the pipe size as much as possible. Set up a test piece mounting base and a test piece mounting plate for mounting the test equipment. Use female and male buckles to open and close the entire chain frame, making it easy to put the chain frame on the bend. Set up an adjustment component to readjust the length of the entire scanning frame after the chain frame is put on the pipe, so that the rolling wheels on the chain frame can be in contact with the outer wall of the pipe. The rolling wheels are used as moving parts to reduce the friction of the scanning frame during movement, and to isolate the test equipment installed on the test piece mounting base and test piece mounting plate from the pipe to avoid collision between the test equipment and the pipe when the scanning frame moves. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the structure of this utility model;
[0013] Figure 2 This is a schematic diagram of the structure of this utility model when it is installed on a pipeline;
[0014] Figure 3 This utility model Figure 1 A structural diagram from the top top view;
[0015] Figure 4 This utility model Figure 1 Structural diagram of the rear view;
[0016] Figure 5 This is a schematic diagram of the structure of the mounting base for the testing component of this utility model.
[0017] In the diagram: 1. Chain frame; 2. Female buckle; 3. Male buckle; 4. Adjusting component; 401. Internal thread seat one; 402. Threaded rod; 403. Internal thread seat two; 5. Detector mounting seat; 501. U-shaped seat; 502. Connecting groove; 503. Mounting hole one; 6. Detector mounting plate; 601. Connecting shaft; 602. Rotating plate; 603. Mounting hole two; 7. Rolling wheel. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.
[0019] Please see Figures 1-5 This utility model provides a technical solution: a pipe inspection scanning frame, including a chain frame 1. A female buckle 2 is fixedly installed at one end of the chain frame 1, and a male buckle 3 is fixedly installed at the other end. The female buckle 2 and male buckle 3 are connected by a snap-fit. The chain frame 1 is composed of multiple detachable chain links. An adjusting component 4, a detection component mounting seat 5, and a detection component mounting plate 6 are installed on the chain frame 1. The detection component mounting plate 6 is installed on the side of the chain frame 1. The adjusting component 4 and the detection component mounting seat 5 are located inside the chain frame 1. Rolling wheels 7 are fixedly connected to the outer walls of both sides of the chain frame 1. The number of chain links on the chain frame 1 can be increased or decreased according to the pipe diameter to be inspected, thereby matching the pipe diameter as closely as possible. The dimensions are set with a test piece mounting base 5 and a test piece mounting plate 6 for installing the test equipment. The entire chain frame 1 is opened and closed using female buckles 2 and male buckles 3, which makes it easy to put the chain frame 1 onto the bend pipe. An adjustment part 4 is set to readjust the length of the entire scanning frame after the chain frame 1 is put onto the pipe, so that the rolling wheel 7 on the chain frame 1 can be attached to the outer wall of the pipe. The rolling wheel 7 is set as a moving part to reduce the friction force on the scanning frame during movement, and to separate the test equipment installed on the test piece mounting base 5 and the test piece mounting plate 6 from the pipe to avoid the test equipment from colliding with the pipe when the scanning frame moves.
[0020] The testing component mounting base 5 includes a U-shaped base 501. The two sides of the U-shaped base 501 are provided with connecting grooves 502. Connecting pins are inserted into the connecting grooves 502 and are hinged to the chain links on the chain frame 1. The side of the U-shaped base 501 is provided with a mounting hole 503. Testing equipment is installed inside the U-shaped base 501. The mounting hole 503 is provided so that when installing the testing equipment, the bolts for installation pass through the mounting hole 503 to install the testing equipment on the U-shaped base 501.
[0021] The test piece mounting plate 6 includes a connecting shaft 601, which is fixedly connected to a chain link on the chain frame 1. A rotating disk 602 is rotatably sleeved on the outer wall of the connecting shaft 601. A second mounting hole 603 is provided on the outer wall of the rotating disk 602. The second mounting hole 603 is provided to fix the test equipment on the rotating disk 602. The connecting shaft 601 is provided to connect the rotating disk 602 to the chain frame 1.
[0022] The adjusting component 4 includes an internal thread seat 401, a threaded rod 402, and an internal thread seat 403. The internal thread seat 401 and the internal thread seat 403 are rotatably connected to the chain links on the chain frame 1 via pins. The threaded rod 402 is threadedly connected to both the internal thread seat 401 and the internal thread seat 403. The threaded rod 402 is provided with two threads with opposite rotation directions, and the two threads correspond to the internal thread seat 401 and the internal thread seat 403 respectively. By rotating the threaded rod 402, the distance between the internal thread seat 401 and the internal thread seat 403 can be adjusted, thereby adjusting the length of the entire scanning frame.
[0023] Rolling wheels 7 are fixedly connected to the side of U-shaped seat 501 and the sides of internal thread seat 1 401 and internal thread seat 2 403, so that U-shaped seat 501, internal thread seat 1 401 and internal thread seat 2 403 are also supported by the rolling wheels 7. During the scanning process, U-shaped seat 501, internal thread seat 1 401 and threaded rod 402 will not collide with the pipe.
[0024] The diameter of the rotating disk 602 is the same as the diameter of the rolling wheel 7, and the connection between the rotating disk 602 and the chain frame 1, as well as the connection between the rolling wheel 7 and the chain frame 1, are located on the same circumferential trajectory, ensuring that the rotating disk 602 can also contact the pipeline. This allows the detection component mounting disk 6, which is set on one side of the chain frame 1, to also play the role of supporting the chain frame 1.
[0025] Working principle: In use, adjust the number of chain links on the chain frame 1 according to the diameter of the pipe to be inspected. Then, put the chain frame 1 on the pipe, lock the female buckle 2 and male buckle 3, and rotate the threaded rod 402 to adjust the spacing of the internal thread seat 1 401 and internal thread seat 2 403 to tighten the chain frame 1. Make the rolling wheels 7 on the chain frame 1, U-shaped seat 501, internal thread seat 1 401 and internal thread seat 2 403 adhere to the pipe. Then, install the inspection equipment (ultrasonic probe, etc.) on the U-shaped seat 501 and the rotating disk 602. Turn on the inspection equipment, rotate or pull the chain frame 1 to move it, and adjust the position of the inspection equipment to scan the pipe.
[0026] 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.
Claims
1. A scanning carriage for pipeline inspection, comprising a chain carriage (1), characterised in that: One end of the chain frame (1) is fixedly installed with a female buckle (2) and the other end is fixedly installed with a male buckle (3). The female buckle (2) and the male buckle (3) are snapped together. The chain frame (1) is made of multiple detachable chain links. The chain frame (1) is equipped with an adjusting component (4), a detection component mounting seat (5), and a detection component mounting plate (6). The detection component mounting plate (6) is installed on the side of the chain frame (1). The adjusting component (4) and the detection component mounting seat (5) are set inside the chain frame (1). Rolling wheels (7) are fixedly connected to the outer walls on both sides of the chain frame (1).
2. The inspection cart of claim 1, wherein: The test piece mounting base (5) includes a U-shaped base (501), and the two sides of the U-shaped base (501) are provided with connecting grooves (502). A connecting pin is inserted into the connecting groove (502), and the connecting pin is hinged to the chain link on the chain frame (1). The side of the U-shaped base (501) is provided with a mounting hole (503).
3. The scanning frame for pipeline inspection according to claim 1, characterized in that: The test piece mounting plate (6) includes a connecting shaft (601), which is fixedly connected to the chain link on the chain frame (1). A rotating disk (602) is rotatably sleeved on the outer wall of the connecting shaft (601), and a second mounting hole (603) is opened on the outer wall of the rotating disk (602).
4. The scanning frame for pipeline inspection according to claim 1, characterized in that: The adjusting component (4) includes an internal thread seat one (401), a threaded rod (402), and an internal thread seat two (403). The internal thread seat one (401) and the internal thread seat two (403) are rotatably connected to the chain links on the chain frame (1) through pins. The threaded rod (402) is threadedly connected to both the internal thread seat one (401) and the internal thread seat two (403). The threaded rod (402) is provided with two threads with opposite rotation directions, and the two threads correspond to the internal thread seat one (401) and the internal thread seat two (403) respectively.
5. The scanning frame for pipeline inspection according to claim 2, characterized in that: Roller wheels (7) are fixedly connected to the side of the U-shaped seat (501) and the sides of the internal thread seat one (401) and internal thread seat two (403).
6. The scanning frame for pipeline inspection according to claim 3, characterized in that: The diameter of the rotating disk (602) is the same as the diameter of the rolling wheel (7), and the connection between the rotating disk (602) and the chain frame (1) and the connection between the rolling wheel (7) and the chain frame (1) are located on the same circumferential trajectory.