Pipeline internal coating detection device

Abstract

The utility model relates to the field of coating detection devices, and discloses a pipeline inner coating detection device which comprises a containing shell, the outer portion of the containing shell is fixedly connected with a plurality of first fixing plates, the outer portions of the first fixing plates are all rotationally connected with first connecting plates, and the other sides of the first connecting plates are rotationally connected with second fixing plates. The outer portions of the multiple second fixing plates are fixedly connected with attaching plates, multiple detection modules are arranged on the outer portions of the attaching plates, a first cavity is formed in the containing shell, and an extension rod is slidably connected into the first cavity. According to the utility model, through the structure that the screw rod, the extension rod and the moving plate drive the transmission assembly and the attaching plate to be linked, the beneficial effect that the detection module is tightly attached to the inner wall coating of the pipeline is achieved. A screw rod is rotated to enable an extension rod and a moving plate to move, a transmission assembly pushes an attaching plate to unfold, and a first fixing plate and a first connecting plate are matched for assistance, so that the detection module is stably attached to the inner wall of the pipeline.

Description

Technical Field

[0001] This utility model relates to the field of coating inspection devices, and in particular to a device for inspecting the coating inside a pipeline. Background Technology

[0002] In pipeline construction and maintenance, such as municipal water supply and drainage pipelines and industrial transmission pipelines, it is necessary to inspect the coating inside the pipeline to determine its integrity and ensure the pipeline's corrosion resistance and leak prevention functions. The inspection device needs to be placed inside the pipeline to accurately detect the coating thickness, uniformity, and damage, ensuring safe pipeline operation.

[0003] Existing pipe internal coating inspection devices mostly attempt to fit the inspection module to the inner wall of the pipe using simple mechanical structures. However, in actual use, due to poor structural linkage, the inspection module often fails to stably and tightly fit the inner wall of pipes of different diameters, easily resulting in problems such as poor adhesion and large deviations in inspection data. Some devices, although they can initially unfold and fit, lack auxiliary stabilizing structures, making them prone to shaking inside the pipe. This leads to unstable contact during the inspection process, affecting the accuracy of the inspection results and failing to meet the requirements for precise inspection.

[0004] Therefore, a pipe internal coating detection device is proposed to address the above problems. Summary of the Invention

[0005] To overcome the above shortcomings, this utility model provides a pipe inner coating detection device, which aims to improve the problem of poor adhesion of the detection module in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A pipe internal coating inspection device includes a housing shell, with multiple fixing plates fixedly connected to the outside of the housing shell. Each of the fixing plates is rotatably connected to a connecting plate. A fixing plate is rotatably connected to the other side of each connecting plate. A bonding plate is fixedly connected to the outside of the fixing plates. Multiple inspection modules are disposed on the outside of the bonding plate. A cavity is formed inside the housing shell. An extension rod is slidably connected inside the cavity. A moving plate is fixedly connected to the top of the extension rod. A transmission assembly for transmitting power is disposed on the outside of the moving plate. A screw is threadedly connected to the bottom of the extension rod.

[0008] As a further description of the above technical solution:

[0009] The transmission assembly includes multiple fixed plates three and multiple connecting plates two. The exterior of the multiple fixed plates three is fixedly connected to the exterior of the moving plate. One side of the connecting plate two is rotatably connected to the exterior of the fixed plates three, and the other side of the connecting plate two is rotatably connected to a fixed plate four. The exterior of the fixed plate four is fixedly connected to the exterior of the bonding plate.

[0010] As a further description of the above technical solution:

[0011] The motion plate has a cavity two inside, and multiple fixing rods are fixedly connected inside the cavity two. Springs are sleeved on the outside of the fixing rods. Limiting plates are slidably connected to the outside of the multiple fixing rods. A sliding plate is fixedly connected to the top of the limiting plate. A protective plate is fixedly connected to the top of the sliding plate.

[0012] As a further description of the above technical solution:

[0013] The top of the screw is slidably connected to the inside of the cavity, and the bottom of the screw is fixedly connected to an anti-slip plate;

[0014] As a further description of the above technical solution:

[0015] One end of the spring is fixedly connected to the bottom inner wall of the cavity two, and the other end of the spring is fixedly connected to the bottom of the limiting plate.

[0016] As a further description of the above technical solution:

[0017] The outer part of the limiting plate is slidably connected to the inside of the second cavity, and the bottom of the sliding plate is slidably connected to the inside of the second cavity.

[0018] This utility model has the following beneficial effects:

[0019] 1. In this utility model, the structure of the screw, the extension rod, the moving plate driving the transmission assembly and the bonding plate in linkage achieves the beneficial effect of the detection module closely adhering to the coating on the inner wall of the pipe. Rotating the screw moves the extension rod and the moving plate, and the transmission assembly pushes the bonding plate to unfold. With the assistance of the first fixing plate and the first connecting plate, the detection module is stably attached to the inner wall of the pipe, providing a reliable contact basis for accurate detection of the coating and ensuring accurate detection data.

[0020] 2. In this utility model, the buffer structure composed of a protective plate, a sliding plate, a limiting plate, a fixing rod, and a spring achieves the beneficial effect of protecting the internal components of the device. When encountering an obstacle, the protective plate is subjected to force, causing the sliding plate and the limiting plate to slide. The compression spring absorbs the impact force, and the fixing rod guides and prevents deviation, avoiding hard collisions that could damage the internal structure such as the moving plate, thus improving the stability and durability of the device in complex pipeline environments. Attached Figure Description

[0021] Figure 1 This is a three-dimensional schematic diagram of a pipe internal coating detection device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of the extension rod of a pipe internal coating detection device proposed in this utility model;

[0023] Figure 3 This is a schematic diagram of the screw structure of a pipe internal coating detection device proposed in this utility model;

[0024] Figure 4 for Figure 3 Enlarged view of point A.

[0025] Legend:

[0026] 1. Housing; 2. Fixing plate one; 3. Connecting plate one; 4. Adhesive plate; 5. Detection module; 6. Extending rod; 7. Moving plate; 8. Fixing plate three; 9. Connecting plate two; 10. Fixing plate four; 11. Protective plate; 12. Cavity one; 13. Screw; 14. Cavity two; 15. Fixing rod; 16. Spring; 17. Limiting plate; 18. Sliding plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Reference Figures 1 to 3This utility model provides an embodiment of a pipe internal coating inspection device, including a housing 1 as the basic load-bearing component of the entire inspection device. This housing 1 provides installation space and support for internal structures such as the cavity 12 and the extension rod 6, as well as external components such as the fixing plate 2, enabling the components to be arranged in an orderly manner and work collaboratively, ensuring the overall structural stability of the device. Multiple fixing plates 2 are fixedly connected to the outside of the housing 1, providing fulcrums for the rotational connection of the connecting plate 3. During the unfolding or retracting of the bonding plate 4, the connecting plates 3 assist in the stable movement of the bonding plate 4, ensuring that the inspection module 5 can move accurately and stably. The plate 4 is fixedly attached to the inner wall of the pipe. Multiple fixed plates 2 are rotatably connected to connecting plates 3, which are rotatably connected to fixed plates 2 and 2. When the plate 4 is unfolded, as the moving plate 7 drives the transmission component to move, the connecting plate 3 will rotate accordingly, which plays an auxiliary support and guiding role in the unfolding of the plate 4 and maintains the stability of the plate 4 during the unfolding process. The other side of the connecting plate 3 is rotatably connected to the fixed plate 2, which connects the connecting plate 3 and the plate 4, and transmits the force transmitted by the connecting plate 3 to the plate 4, so that the plate 4 can unfold towards the inner wall of the pipe under the action of the transmission component, and at the same time provides a stable installation foundation for the plate 4.

[0029] Multiple fixed plates are externally fixed with bonding plates 4 for installing detection modules 5. Under the push of the transmission component, the modules 5 unfold towards the inner wall of the pipe, so that the detection modules 5 fit tightly against the coating of the inner wall of the pipe. This provides a carrier for the contact between the detection modules 5 and the coating, ensuring the smooth progress of the detection work. Multiple detection modules 5 are set outside the bonding plates 4 and are in direct contact with the coating inside the pipe. They are used to detect the thickness, uniformity, damage and other conditions of the coating. They are the core components for realizing the detection function of the inner coating of the pipe. The detection information is fed back to determine whether the coating meets the requirements. The cavity 12 is opened inside the housing 1 to provide sliding space for the extension rod 6 and restrict the movement trajectory of the extension rod 6. This allows the extension rod 6 to slide stably along the cavity 12, thereby driving the moving plate 7 and other components to move in an orderly manner, ensuring the stability of the device transmission.

[0030] The cavity 12 has an extension rod 6 that is threadedly connected at the bottom to a screw 13 and fixed at the top to a moving plate 7. Under the threaded force generated by the rotation of the screw 13, the extension rod slides along the cavity 12, moving up and down, which in turn drives the moving plate 7 to move. This provides an intermediate link for power transmission for the transmission assembly to push the bonding plate 4 to unfold. The top of the extension rod 6 is fixedly connected to the moving plate 7, which connects the extension rod 6 and the transmission assembly (fixed plate 8, etc.). The extension rod 6 moves up and down under its own movement, which drives the transmission assembly to move, thereby pushing the bonding plate 4 to unfold or retract. At the same time, the cavity 2 14 is provided inside, which provides installation space for the buffer structure (fixed rod 15, spring 16, etc.) and serves to integrate multiple functional components. The outside of the moving plate 7 is provided with a transmission assembly for transmitting power. The transmission assembly includes multiple fixed plates 8 fixed to the outside of the moving plate 7, providing a fulcrum for the rotational connection of the connecting plate 2 9. When the moving plate 7 moves, the rotational cooperation with the connecting plate 2 9 converts the movement of the moving plate 7 into a force that pushes the bonding plate 4 to unfold. This is the key component for the transmission assembly to realize power transmission.

[0031] Multiple connecting plates 29 are rotatably connected to fixed plates 38 on one side and fixed plates 410 on the other side. When the moving plate 7 drives the fixed plates 38 to move, the connecting plates 29 rotate, transmitting force to the fixed plates 410, which in turn pushes the bonding plate 4 to unfold towards the inner wall of the pipe, realizing the power transmission of the transmission component. The exterior of the multiple fixed plates 38 is fixedly connected to the exterior of the moving plate 7. One side of the connecting plate 29 is rotatably connected to the exterior of the fixed plates 38, and the other side of the connecting plate 29 is rotatably connected to the fixed plates 410, which is fixed to the exterior of the bonding plate 4, connecting the connecting plates 29 and the bonding plate 4. This converts the power transmitted by the connecting plates 29 into a force that pushes the bonding plate 4 to unfold, enabling the bonding plate 4 to move towards the inner wall of the pipe, ensuring that the detection module 5 adheres to the coating on the inner wall of the pipe. The external fixed plate 10 is fixedly connected to the outside of the bonding plate 4. The bottom of the extension rod 6 is threadedly connected to the screw 13, and the bottom of the screw 13 is provided with an anti-slip plate for easy operation and rotation. The top of the screw 13 is threadedly connected to the bottom of the extension rod 6. By rotating the screw 13, the extension rod 6 slides along the cavity 12 using the thread transmission principle, providing a power source for the unfolding and retraction of the bonding plate 4 and the adjustment of the detection position in the whole device. The top of the screw 13 is slidably connected to the inside of the cavity 12, and the bottom of the screw 13 is fixedly connected to the anti-slip plate, which increases the friction between the screw 13 and the operating tools (such as wrenches) or the operator's hand, making it convenient for the operator to rotate the screw 13, so that the screw 13 can smoothly drive the extension rod 6 to move, ensuring the ease of operation of the device.

[0032] Reference Figure 1 and Figure 4The motion plate 7 has a cavity 14 inside, which provides installation space for buffer structure components such as the fixed rod 15, spring 16, limiting plate 17, and sliding plate 18. This allows these components to be arranged in an orderly manner to form a buffer protection system, protecting the motion plate 7 and the internal structure of the device. Multiple fixed rods 15 are fixedly connected inside the cavity 14, providing sliding guidance for the limiting plate 17 and restricting its sliding direction so that the limiting plate 17 can only slide along the axial direction of the fixed rod 15 within the cavity 14. At the same time, it provides a mounting carrier for the spring 16, ensuring that the spring 16 can be stably fitted on the outside and exert its elastic force. For buffering, a spring 16 is sleeved on the outside of the fixed rod 15. One end is connected to the bottom inner wall of the cavity 14, and the other end is connected to the bottom of the limiting plate 17. When the protective plate 11 is squeezed by an obstacle, causing the sliding plate 18 and the limiting plate 17 to slide, the spring 16 will be compressed. Through elastic deformation, the impact force is absorbed, reducing the damage of external force to the moving plate 7 and the internal structure of the device, thus playing a buffering and protective role. Multiple fixed rods 15 are slidably connected to the outside of the fixed rods 15 and fixedly connected to the sliding plate 18. When the protective plate 11 is subjected to force, it slides with the sliding plate 18 in the cavity 14, compressing the spring 16.

[0033] Simultaneously, by utilizing the sliding engagement with the fixed rod 15, the sliding direction of itself, the sliding plate 18, and the protective plate 11 is restricted to prevent deviation and ensure the stable functioning of the buffer structure. One end of the spring 16 is fixedly connected to the bottom inner wall of the cavity 14, and the other end of the spring 16 is fixedly connected to the bottom of the limiting plate 17. The outside of the limiting plate 17 is slidably connected to the inside of the cavity 14. The top of the limiting plate 17 is fixedly connected to the sliding plate 18, the bottom of which is slidably connected to the cavity 14, and the top of which is fixedly connected to the protective plate 11. When the protective plate 11 is subjected to external force, it drives the limiting plate 17 to slide within the cavity 14, transmitting the external force to the spring 16, causing the spring to... 16 plays a buffering role, while its own sliding is restricted by cavity 2 14 and limiting plate 17, ensuring the stability of the buffering process. The bottom of sliding plate 18 is slidably connected to the inside of cavity 2 14, and the top of sliding plate 18 is fixedly connected to protective plate 11. When the device encounters a protrusion or obstacle in the pipeline, it first contacts the obstacle and is subjected to force. By driving sliding plate 18 and limiting plate 17 to slide, the spring 16 is compressed, and the impact force is converted into the elastic deformation energy of spring 16. This avoids hard collisions that could damage the internal structure of moving plate 7, thus protecting the device and improving its durability in complex pipeline environments.

[0034] Working Principle: When using this pipe inner coating inspection device, first place the device inside the pipe to be inspected. Then rotate the screw 13. Since the bottom of the extension rod 6 is threadedly connected to the screw 13, the extension rod 6 will slide upward along the cavity 12 under the action of the thread. When the extension rod 6 moves upward, it will drive the top moving plate 7 to move upward synchronously. During the movement of the moving plate 7, the multiple fixed plates 3 8 in the transmission assembly move with the moving plate 7. One side of the connecting plate 2 9 is rotatably connected to the fixed plate 3 8, and the other side is rotatably connected to the fixed plate 4 10. The fixed plate 4 10 is fixed to the outside of the bonding plate 4, so the connecting plate 2 9 will push the bonding plate 4 to unfold towards the inner wall of the pipe. At the same time, the fixed plate 1 2 outside the housing 1 is rotatably connected to the connecting plate 1 3. The other side of the connecting plate 1 3 is connected to the fixed plate 2. When the bonding plate 4 unfolds, the connecting plate 1 3 will also rotate accordingly to help the bonding plate 4 unfold stably until the detection module 5 outside the bonding plate 4 tightly adheres to the inner wall coating of the pipe, preparing for subsequent inspection.

[0035] When the device encounters a protrusion or other obstacle in the pipe, the protective plate 11 will first contact the obstacle and be compressed. After the top of the protective plate 11 is subjected to force, it will drive the sliding plate 18 at the bottom to slide into the cavity 14. The sliding plate 18 will then drive the limiting plate 17 to slide within the cavity 14. The limiting plate 17 is sleeved on the outside of the fixed rod 15. When sliding, it will compress the spring 16 sleeved on the fixed rod 15. The spring 16 absorbs the impact force through elastic deformation. The fixed rod 15 guides the sliding of the limiting plate 17 to prevent it from deviating, thereby protecting the moving plate 7 and the entire internal structure of the device and preventing damage to the detection components due to hard collisions.

[0036] During the inspection process, multiple inspection modules 5 on the bonding plate 4 continuously contact the coating inside the pipe to inspect the coating's thickness, uniformity, and damage. If the inspection position needs to be adjusted, the screw 13 can be rotated again, causing the extension rod 6 to drive the moving plate 7 to move in the opposite direction. The transmission component then drives the bonding plate 4 to retract or re-expand, changing the contact position between the inspection modules 5 and the inner wall of the pipe, thus enabling the inspection of the coating in different areas of the pipe.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pipeline internal coating inspection device comprising a containment shell (1) characterised in that: The outer side of the housing (1) is fixedly connected to multiple fixing plates (2), and the outer side of each fixing plate (2) is rotatably connected to a connecting plate (3). The other side of the connecting plate (3) is rotatably connected to a fixing plate (2). The outer side of the multiple fixing plates (2) is fixedly connected to a bonding plate (4). The outer side of the bonding plate (4) is provided with multiple detection modules (5). The inner side of the housing (1) is provided with a cavity (12). The inner side of the cavity (12) is slidably connected to an extension rod (6). The top of the extension rod (6) is fixedly connected to a moving plate (7). The outer side of the moving plate (7) is provided with a transmission component for transmitting power. The bottom of the extension rod (6) is threadedly connected to a screw (13).

2. A pipeline internal coating inspection apparatus according to claim 1, characterised in that: The transmission assembly includes multiple fixed plates three (8) and multiple connecting plates two (9). The exterior of the multiple fixed plates three (8) is fixedly connected to the exterior of the moving plate (7). One side of the connecting plate two (9) is rotatably connected to the exterior of the fixed plates three (8), and the other side of the connecting plate two (9) is rotatably connected to a fixed plate four (10). The exterior of the fixed plate four (10) is fixedly connected to the exterior of the bonding plate (4).

3. The pipe internal coating detection device according to claim 1, characterized in that: The moving plate (7) has a cavity two (14) inside. Multiple fixing rods (15) are fixedly connected inside the cavity two (14). Springs (16) are sleeved on the outside of the fixing rods (15). Limiting plates (17) are slidably connected to the outside of the multiple fixing rods (15). A sliding plate (18) is fixedly connected to the top of the limiting plate (17). A protective plate (11) is fixedly connected to the top of the sliding plate (18).

4. A pipe internal coating inspection apparatus according to claim 1, characterised in that: The top of the screw (13) is slidably connected to the inside of the cavity (12), and the bottom of the screw (13) is fixedly connected to an anti-slip plate.

5. A pipe internal coating inspection apparatus according to claim 3, characterised in that: One end of the spring (16) is fixedly connected to the bottom inner wall of the cavity (14), and the other end of the spring (16) is fixedly connected to the bottom of the limiting plate (17).

6. A pipe internal coating inspection apparatus according to claim 3, wherein: The outer side of the limiting plate (17) is slidably connected to the inside of the cavity two (14), and the bottom of the sliding plate (18) is slidably connected to the inside of the cavity two (14).

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