Fisheye lens unit and non-destructive piping inspection device

Abstract

In the field of piping inspection technology, a fisheye lens unit and a non-destructive piping inspection device are provided. The system comprises a support plate 1, a connecting sleeve 2, a fixed plate 3, a connecting plate, and a fisheye lens, with an arc-shaped groove 6 drilled in the support plate. A first motor 8 realizes circumferential rotation scanning of the fisheye lens through the meshing transmission of a gear 10 and an internal gear 9, and a second motor 13 of the movement mechanism drives a chain transmission to realize axial movement of the fisheye lens. The two motor control systems operate independently, and a multi-degree-of-freedom flexible support system ensures that the fisheye lens can adapt to different pipe diameters and curved piping environments.

Description

[Technical Field]

[0001] The present invention relates to the field of pipe inspection technology, and specifically discloses a fisheye lens unit and a pipe non-destructive inspection device. [Background technology]

[0002] Non-destructive pipe testing is an extremely important technology in industrial production and infrastructure maintenance. Its purpose is to comprehensively and accurately inspect the inner wall of a pipe without destroying the pipe structure, thereby detecting potential defects or damage. Conventional pipe inspection devices typically use standard cameras or sensors to collect data. However, the limited viewing angle of standard lenses makes it difficult to achieve wide coverage of the inner wall of the pipe, resulting in low inspection efficiency and the risk of overlooking small details.

[0003] Some inspection devices have attempted to expand the inspection range by increasing the number of lenses or using manipulators. However, these methods usually entail problems such as an increase in the volume of the device, a more complex structure, and increased control difficulty. At the same time, existing devices often rely on a single drive system or simple transmission mechanism to achieve circumferential rotation scanning and axial movement, making it difficult to ensure the stability of movement and the accuracy of positioning, thereby affecting the reliability of the inspection results.

[0004] In view of the above problems, the present invention provides a fisheye lens unit and a non-destructive pipe inspection device. Summary of the Invention [Problem to be solved by the invention]

[0005] The purpose of the present invention is to provide a fisheye lens unit and a non-destructive pipe inspection device, which solves the problems of poor adaptability, low inspection efficiency, and difficulty in realizing multi-degree-of-freedom movement in non-destructive pipe inspection in the background art. [Means for solving the problem]

[0006] To achieve the above objectives, the present invention employs the following technical means: A fisheye lens unit and non-destructive piping inspection device comprising a support plate, a connecting sleeve, a fixed plate, a connecting plate and a fisheye lens, wherein an arc-shaped groove is formed in the support plate and a stopper pin is slidably disposed in the arc-shaped groove, a first motor is disposed on the support plate, the output shaft of the first motor is connected to a gear, the gear meshes with an internal gear to transmit power, the internal gear is positioned by the connecting sleeve and the sliding sleeve, the fixed plate is connected to the internal gear, and the fisheye lens is attached to the fixed plate via the connecting plate.

[0007] By adopting the above technical means, the fisheye lens can be flexibly adjusted to multiple angles, meeting the needs of omnidirectional inspection of the inner wall of the pipe.

[0008] As a further explanation of the above technical solution, a moving mechanism is provided for moving the fisheye lens along the axial direction of the pipe, and the moving mechanism includes a support disk, a second motor, a rotating shaft, a rotating column, a driving sprocket, a chain, a connecting block, a sliding disk, a rotating rod, and a driven sprocket, and the second motor drives the rotating column to rotate via the rotating shaft, and the driving sprocket is provided on the rotating column.

[0009] By adopting the above technical means, precise movement of the fisheye lens along the axial direction of the pipe can be achieved, and in combination with circumferential rotation adjustment, inspection of the inner wall of the pipe can be performed in all directions with no blind spots.

[0010] To further explain the above technical solution, the center of the arc-shaped groove coincides with the rotation center of the internal gear, and when the stopper pin slides in the arc-shaped groove, it causes the internal gear and parts connected thereto to rotate stably around the rotation center.

[0011] By adopting the above technical measures, the coaxiality and stability of the internal gear rotation can be ensured, shaking or jamming due to eccentricity can be avoided, the circumferential rotation of the fisheye lens can be made smoother, and the clarity and positioning accuracy of the inspection screen can be improved.

[0012] To further explain the above technical solution, the first motor drives the fisheye lens to perform circumferential rotation scanning, and the second motor drives the fisheye lens to perform axial movement, and the two motor control systems are independent of each other to achieve full coverage inspection of the inner wall of the pipe.

[0013] By adopting the above technical means, the two drive systems work independently and in coordination with each other, allowing the fisheye lens to form two-dimensional motion coverage in the circumferential and axial directions, completely eliminating blind spots during inspection and realizing automated, high-precision, full-coverage inspection of the inner walls of pipes.

[0014] To further explain the above technical solution, the support plate is placed at the end of the pipe or outside, providing a support base for the entire unit, and the connecting sleeve, sliding sleeve, fixed plate and connecting plate work together to form a multi-degree of freedom flexible support system, allowing the fisheye lens unit to adapt to piping environments with different pipe diameters and a certain degree of curvature.

[0015] By adopting the above technical means, it is possible to adapt to complicated piping operating conditions with different pipe diameters and certain curvatures, greatly expanding the application range of the device.

[0016] As a further explanation of the above technical solution, the chain is wound between the driving sprocket and the driven sprocket, and the connecting blocks are fixed on the outer wall of the chain.

[0017] By adopting the above technical means, the linear motion of the chain is transmitted directly to the fisheye lens unit via the connecting block, and the rotational motion of the sprocket is accurately converted into axial linear displacement, realizing smooth and uniform movement of the fisheye lens along the axial direction of the pipe.

[0018] As a further explanation of the above technical solution, the connecting block is connected with the sliding disc, the sliding disc is slidably mounted on the top of the support disc, and the fisheye lens is mounted on the sliding disc.

[0019] By adopting the above technical means, the sliding disc provides stable support and guiding support for the fisheye lens unit, and in combination with the power transmission of the connecting block, the fisheye lens slides smoothly along the top of the support disc along with the sliding disc, ensuring linearity and stability during the axial movement process and avoiding the influence of lens deviation on the inspection accuracy. [Effects of the Invention]

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] The fisheye lens unit and non-destructive pipe testing device provided by this invention first utilizes the cooperation of an arc-shaped groove, a stop pin, an internal gear, and a moving mechanism to enable the fisheye lens unit to achieve multi-degrees of freedom (circumferential rotation and axial translation), thereby meeting the need for omnidirectional inspection of pipe inner walls. The first and second motors control the circumferential rotation and axial translation of the fisheye lens, respectively. The two systems are independent, allowing for flexible operation without interfering with each other. The arc-shaped groove and stop pin design ensure stable rotation of the internal gear and its associated components, and the multi-degrees of freedom flexible support system allows the fisheye lens unit to adapt to different pipe diameters and curved pipe environments. The fisheye lens moves precisely along the axial direction of the pipe via the moving mechanism, and combined with circumferential rotation scanning, it achieves highly efficient, full-coverage inspection of pipe inner walls. [Brief explanation of the drawings]

[0022] [Figure 1] 1 is a schematic diagram of the overall structure of the present invention. [Figure 2] 1 is a schematic diagram of the internal gear structure of the present invention; [Figure 3]1 is a schematic diagram of the chain structure of the present invention. [Explanation of symbols]

[0023] 1, support plate, 2, connecting sleeve, 3, fixed plate, 4, connecting plate, 5, fisheye lens, 6, arc-shaped groove, 7, stopper pin, 8, first motor, 9, internal gear, 10, gear, 11, support disc, 12, sliding sleeve, 13, second motor, 14, rotating shaft, 15, rotating column, 16, driving sprocket, 17, chain, 18, connecting block, 19, sliding disc, 20, rotating rod, 21, driven sprocket. DETAILED DESCRIPTION OF THE INVENTION

[0024] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and are not all of the embodiments. Based on the embodiments of the present invention, all other embodiments that a person skilled in the art can obtain without creative work fall within the scope of protection of the present invention.

[0025] For a more complete understanding of the present invention, the present invention will now be described in detail with reference to the drawings.

[0026] 1 to 3, the fisheye lens unit and non-destructive pipe inspection device of the present invention comprises a support plate 1, a connecting sleeve 2, a fixed plate 3, a connecting plate 4, and a fisheye lens 5. The support plate 1 serves as the foundation for the entire unit and is disposed at or outside the pipe end to provide a stable support base for the entire unit. An arc-shaped groove 6 is formed on the support plate 1, and a stopper pin 7 is slidably mounted within the arc-shaped groove 6. The design of the stopper pin 7 ensures that the internal gear 9 and the components connected thereto can rotate stably around the center of rotation. The center of the arc-shaped groove 6 coincides with the center of rotation of the internal gear 9, so that when the stopper pin 7 slides within the arc-shaped groove 6, the internal gear 9 and the components connected thereto can rotate accurately around the center of rotation. This design not only simplifies the mechanical structure, but also improves the stability of movement and prevents deviation during rotation from affecting inspection accuracy.

[0027] A first motor 8 is mounted on the support plate 1, and its output shaft is connected to a gear 10, which meshes with an internal gear 9 to transmit power. The position of the internal gear 9 is defined by a connecting sleeve 2 and a sliding sleeve 12. A fixed plate 3 is connected to the internal gear 9, and the fisheye lens 5 is mounted on the fixed plate 3 via a connecting plate 4. The connecting sleeve 2 and the sliding sleeve 12 are connected by a screw or buckle system to form an adjustable support structure. The fixed plate 3 is fixedly connected to the internal gear 9 via a bolt, and the connecting plate 4 is connected to the fixed plate 3 via a hinge system, allowing the angle of the fisheye lens 5 to be adjusted within a certain range. This multi-degree-of-freedom flexible support system allows the fisheye lens unit to adapt to piping environments with different pipe diameters and a certain degree of curvature, while ensuring the stability of the fisheye lens 5 in complex environments. In step S1, the first motor 8 is started, and the rotational motion is transmitted to the fixed plate 3 via the meshing transmission of the gear 10 and the internal gear 9, thereby driving the fisheye lens 5 to complete the circumferential scan. Through this process, the fisheye lens 5 can perform a circumferential rotational scan of the inner wall of the pipe, ensuring the completeness of the inspection.

[0028] To move the fisheye lens 5 along the axial direction of the pipe, the present invention further includes a movement mechanism. As shown in FIG. 1 , the movement mechanism includes a support disk 11, a second motor 13, a rotating shaft 14, a rotating column 15, a driving sprocket 16, a chain 17, a connecting block 18, a sliding disk 19, a rotating rod 20, and a driven sprocket 21. The support disk 11 is fixedly mounted on the support plate 1, providing a stable support base for the movement mechanism. The second motor 13 drives the rotating column 15 via the rotating shaft 14, and the driving sprocket 16 is mounted on the rotating column 15. The chain 17 is wound between the driving sprocket 16 and the driven sprocket 21, and the connecting block 18 is fixed on the outer wall of the chain 17. The connecting block 18 is connected to the sliding disk 19, which is slidably mounted on the top of the support disk 11, and the fisheye lens 5 is mounted on the sliding disk 19. In step S2, the second motor 13 is started, driving the rotating column 15 via the rotating shaft 14, causing the driving sprocket 16 on the rotating column 15 to rotate accordingly. The rotation of the driving sprocket 16 is transmitted to the driven sprocket 21 via the chain 17, causing the chain 17 to move in a circular motion. The movement of the chain 17 is converted into linear motion of the sliding disc 19 via the connecting block 18, which further drives the fisheye lens 5 to move in the axial direction of the pipe. The tension of the chain 17 is adjusted via the rotating rod 20, thereby ensuring the stability of the chain 17 during the transmission process. This design allows the fisheye lens 5 to move accurately along the axial direction of the pipe, and when combined with circumferential rotation scanning, it is possible to perform omnidirectional coverage inspection of the pipe's inner wall.

[0029] The first motor 8 and the second motor 13 respectively control the circumferential rotation and axial movement of the fisheye lens 5, and the two motor control systems are independent of each other. The first motor 8 transmits rotational motion to the fixed plate 3 via the meshing transmission of the gear 10 and the internal gear 9, thereby driving the fisheye lens 5 to complete the circumferential scan. The second motor 13 converts the rotational motion into linear motion via the transmission of the drive sprocket 16, the chain 17, and the driven sprocket 21, thereby driving the sliding disk 19 to slide along the top of the support disk 11. In step S3, the first motor 8 and the second motor 13 work together to achieve full coverage inspection of the inner wall of the pipe. The first motor 8 drives the fisheye lens 5 to perform the circumferential rotation scan, and the second motor 13 drives the fisheye lens 5 to perform the axial movement. The two systems do not interfere with each other, allowing for flexible operation and high efficiency. For example, in practical application, the first motor 8 can be set to rotate 360 ​​degrees per minute to complete one complete circumferential scan, and the second motor 13 sets the moving speed based on the pipe length to ensure that the fisheye lens 5 uniformly covers the entire inner wall of the pipe in the axial direction.

[0030] The multi-degree-of-freedom flexible support system of the present invention greatly enhances the adaptability of the fisheye lens unit through the coordinated action of the connecting sleeve 2, sliding sleeve 12, fixed plate 3, and connecting plate 4. The design of the connecting sleeve 2 and sliding sleeve 12 allows the fisheye lens unit to adapt to piping environments with different pipe diameters. When the pipe diameter changes, the relative positions of the connecting sleeve 2 and sliding sleeve 12 can be adjusted to change the installation height of the fisheye lens 5, thereby ensuring that the fisheye lens 5 is always located at the center of the pipe. The fixed connection between the fixed plate 3 and the internal gear 9 ensures the stability of the fisheye lens 5 during rotation, and the hinge design of the connecting plate 4 allows the fisheye lens 5 to adjust its angle within a certain range, adapting to piping environments with a certain degree of curvature. This multi-degree-of-freedom flexible support system not only improves the adaptability of the fisheye lens unit, but also ensures the stability of the fisheye lens 5 in complex environments.

[0031] Operating principle The support plate 1 is placed outside the pipe, and the fisheye lens 5 is activated. The first motor 8 drives and rotates the gear 10, and the stopper pin 7 slides along the inner wall of the arc-shaped groove 6 on the outer wall of the support plate 1, causing the gear 10 to mesh with and rotate the internal gear 9. The internal gear 9 is fixed by the connecting sleeve 2 and the sliding sleeve 12, and the fixed plate 3 is rotated to inspect the inner wall of the pipe. The second motor 13 drives and rotates the rotating column 15, which rotates the driving sprocket 16. The driving sprocket 16 and chain 17 drive and rotate the driven sprocket 21, which rotates the rotating rod 20 inside, which moves the connecting block 18 on the outer wall of the chain 17, causing the sliding disk 19 to slide along the top of the support disk 11, driving and moving the fisheye lens 5, and inspecting different lengths of pipe.

[0032] It should be understood that, in this application, the use of terms such as "first," "second," and related terms is merely used to distinguish one entity or operation from another, and does not require or imply the existence of any actual relationship or ordering between those entities or operations. Furthermore, the use of "comprises," "comprises," or any other variant thereof is intended to be non-exclusive inclusive, whereby a process, method, article, or apparatus that includes a set of elements includes not only those elements but also other elements not expressly listed or that are inherent in the process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is limited only by the appended claims and their equivalents.

Claims

1. A fisheye lens unit and a non-destructive pipe inspection device, comprising a support plate (1), a connecting sleeve (2), a fixing plate (3), a connecting plate (4), and a fisheye lens (5), wherein an arc-shaped groove (6) is formed in the support plate (1), and a stopper pin (7) is slidably provided in the arc-shaped groove (6), and a first motor (8) is provided on the support plate (1), and the output shaft of the first motor (8) is connected to a gear (10), and the gear (10) is meshed with one internal gear (9). The internal gear (9) is positioned by the connecting sleeve (2) and the sliding sleeve (12), the fixed plate (3) is connected to the internal gear (9), the fisheye lens (5) is attached to the fixed plate (3) via the connecting plate (4), the center of the arc-shaped groove (6) overlaps with the rotation center of the internal gear (9), and when the stopper pin (7) slides in the arc-shaped groove (6), the internal gear (9) and the parts connected thereto rotate stably around the rotation center. A fisheye lens unit and a non-destructive piping inspection device.

2. The apparatus further includes a moving mechanism for moving the fisheye lens (5) along the axial direction of the pipe, the moving mechanism including a support disk (11), a second motor (13), a rotating shaft (14), a rotating column (15), a driving sprocket (16), a chain (17), a connecting block (18), a sliding disk (19), a rotating rod (20), and a driven sprocket (21), the second motor (13) drives the rotating column (15) to rotate via the rotating shaft (14), and the driving sprocket (16) is provided on the rotating column (15).

2. The fisheye lens unit and non-destructive piping inspection device according to claim 1.

3. The first motor (8) drives the fisheye lens (5) to perform circumferential rotation scanning, and the second motor (13) drives the fisheye lens (5) to perform axial movement, and the two motor control systems are independent of each other to achieve full coverage inspection of the inner wall of the pipe.

3. The fisheye lens unit and non-destructive piping inspection device according to claim 2.

4. The support plate (1) is placed at the end of the pipe or outside to provide a support base for the entire unit, and the connecting sleeve (2), sliding sleeve (12), fixed plate (3) and connecting plate (4) work together to form a multi-degree of freedom flexible support system, allowing the fisheye lens unit to adapt to piping environments with different pipe diameters and certain curvatures.

3. The fisheye lens unit and non-destructive piping inspection device according to claim 2.

5. The chain (17) is wound between the driving sprocket (16) and the driven sprocket (21), the connecting block (18) is fixed on the outer wall of the chain (17), the connecting block (18) is connected to the sliding disc (19), the sliding disc (19) is slidably mounted on the top of the support disc (11), and the fisheye lens (5) is mounted on the sliding disc (19).

3. The fisheye lens unit and non-destructive piping inspection device according to claim 2.

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