Steel pipe surface defect detection device

Abstract

The invention provides a steel pipe surface defect detection device which is used for detecting surface defects of steel pipes with different pipe diameters, the steel pipe surface defect detection device comprises a centering adjusting mechanism, a shell and a detection mechanism, the centering adjusting mechanism comprises a conveying assembly and a jacking assembly which are connected, and the conveying assembly can drive the jacking assembly to move in the first direction; the jacking assembly is provided with a movable end; the shell is connected to the movable end, the jacking assembly can drive the shell to move in the second direction, the shell is provided with a first containing cavity and a via hole, and the inner wall of the via hole is provided with a first detection port and a second detection port which are communicated with the first containing cavity; the detection mechanism is arranged in the first containing cavity, and a speed measuring piece of the detection mechanism corresponds to the first detection opening and is used for detecting the moving speed of the steel pipe. An image shooting piece of the detection mechanism corresponds to the second detection opening and is used for shooting a surface image of the steel pipe; through the arrangement, the through holes can be matched with various steel pipes with different pipe diameters, and the steel pipe surface defect detection efficiency can be improved.

Description

Technical Field

[0001] This invention relates to the field of steel pipe production technology, and in particular to a steel pipe surface defect detection device. Background Technology

[0002] In steel pipe production lines of steel enterprises, surface defects are prone to occur during the rolling and sizing processes, affecting the quality of the finished products. Currently, there are no effective automated methods to detect defects in steel pipes of different diameters, and inspection and confirmation mainly rely on manual methods.

[0003] The following problems exist when manually inspecting steel pipes:

[0004] 1) Inconsistent inspection standards and lack of quantitative data support; 2) Without 24-hour uninterrupted and full-coverage defect detection, there may be omissions, which may affect the production schedule; 3) The surface quality of hot steel pipes cannot be inspected manually, which may lead to batch defects not being detected in time, resulting in batches of defective products.

[0005] Therefore, a new solution is needed to address the aforementioned technical problems. Summary of the Invention

[0006] This invention provides a steel pipe surface defect detection device to solve the technical problem of how to detect surface defects of steel pipes of different diameters during the production process.

[0007] This invention provides a steel pipe surface defect detection device for detecting surface defects in steel pipes of different diameters. The steel pipe surface defect detection device includes: The centering adjustment mechanism includes a conveying component and a lifting component connected to each other. The conveying component can drive the lifting component to move along a first direction. The lifting component has a movable end. The housing is connected to the movable end, and the lifting assembly can drive the housing to move along a second direction, which is perpendicular to the first direction; the housing has a first accommodating cavity, and the housing is provided with a through hole for the steel pipe to pass through the housing, and the inner wall of the through hole is provided with a first detection port and a second detection port communicating with the first accommodating cavity; The detection mechanism is disposed within the first accommodating cavity. The detection mechanism includes a speed measuring component and an image acquisition component. The speed measuring component includes a speed measuring element, which is disposed corresponding to the first detection port and is used to detect the moving speed of the steel pipe. The image acquisition component includes an image capturing element, which is disposed corresponding to the second detection port and is used to capture a surface image of the steel pipe.

[0008] In one embodiment of the present invention, the speed measuring component further includes a first driving member, the driving end of the first driving member being connected to the speed measuring member, the speed measuring member being disposed toward the center line of the via, and the first driving member driving the speed measuring member to move closer to or away from the center line of the via; the image acquisition component further includes a second driving member, the driving end of the second driving member being connected to the image capturing member, the image capturing member being disposed toward the center line of the via, and the second driving member driving the image capturing member to move closer to or away from the center line of the via.

[0009] In one embodiment of the present invention, the image acquisition component further includes a light source, which is configured corresponding to the second detection port, and each image capturing device is equipped with one light source.

[0010] In one embodiment of the present invention, the image acquisition component further includes a first housing, which is disposed at the driving end of the second driving member; the first housing is provided with a second accommodating cavity, a first viewing window and a second viewing window, the image capturing device and the light source are both disposed in the second accommodating cavity, and the image capturing device is disposed corresponding to the first viewing window, and the light source is disposed corresponding to the second viewing window.

[0011] In one embodiment of the present invention, the image acquisition components are provided in multiple sets, the multiple sets of image acquisition components are evenly distributed along the circumference of the via, and each set of image acquisition components is configured with a second detection port.

[0012] In one embodiment of the present invention, the steel pipe surface defect detection device further includes a cooling component, which is disposed in the first accommodating cavity and is used to cool the detection mechanism.

[0013] In one embodiment of the present invention, the cooling assembly includes a first frame and a water-cooling pipe. The first frame surrounds the outer periphery of the detection mechanism, and the water-cooling pipe is disposed on the first frame, with cooling water flowing inside the water-cooling pipe. A gas channel is disposed inside the first frame, and a first air outlet communicating with the gas channel is disposed on the first frame, the first air outlet being used to output cold air.

[0014] In one embodiment of the present invention, the cooling component further includes a water-cooled block, the water-cooled block is provided with a cooling water channel, and cooling water flows in the cooling water channel; the image acquisition component includes a first housing, the speed measuring component includes a second housing, the second housing has a third accommodating cavity, the speed measuring element is disposed in the third accommodating cavity, and the water-cooled block is disposed on the outer wall of both the first housing and the second housing.

[0015] In one embodiment of the present invention, the housing further includes a third viewing window and a fourth viewing window, wherein the first detection port is configured with the third viewing window and the second detection port is configured with the fourth viewing window.

[0016] In one embodiment of the present invention, the steel pipe surface defect detection device further includes a purging assembly, and each of the fourth viewing windows is equipped with a purging assembly, the purging assembly being disposed on the side of the fourth viewing window near the through hole.

[0017] The beneficial effects of this invention are as follows: The steel pipe surface defect detection device proposed in this invention has a housing with a through hole for the steel pipe to pass through. The housing is moved along a first direction by a conveying component and along a second direction by a lifting component, so that the through hole and the steel pipe are coaxially arranged. This allows the through hole to be adapted to steel pipes of various diameters, which is beneficial for the detection mechanism to detect steel pipes of different diameters. Furthermore, the image capturing component is used to capture surface images of the steel pipe, and surface defects of the steel pipe can be determined from the surface images. In addition, the speed measuring component can detect the moving speed of the steel pipe, and combined with the moving time of the steel pipe, the location of the surface defects of the steel pipe can be determined, which helps to improve the efficiency of steel pipe surface defect detection. Attached Figure Description

[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0019] In the attached diagram: Figure 1 This is a schematic diagram of the structure of a steel pipe surface defect detection device provided in an embodiment of the present invention; Figure 2 This is a partial structural schematic diagram of a steel pipe surface defect detection device provided in one embodiment of the present invention; Figure 3 This is a schematic diagram of the structure of the housing provided in one embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of an image acquisition component provided in one embodiment of the present invention; Figure 5 This is a schematic diagram of the structure of a speed measuring component provided in one embodiment of the present invention; Figure 6 for Figure 2 A magnified schematic diagram of part A in the middle.

[0020] The attached figures are labeled as follows: 1-Steel pipe; 2-Housing; 201-Through hole; 202-First accommodating cavity; 203-First detection port; 204-Second detection port; 205-Third viewing window; 206-Fourth viewing window; 21-Second frame; 22-Back plate; 23-Outer side plate; 24-Inner side plate; 25-Door panel; 26-Mounting plate; 3-Conveying assembly; 31-Base; 32-Linear guide rail; 33-Rack; 34-Gear; 35-Third drive component; 36-Moving plate; 4-Lifting assembly; 41-Bearing; 42-Guide pin; 43-Fourth drive component; 44-Transmission component; 45-Screw jack; 5-Image acquisition component; 51-Image capturing component; 52-Second driving component; 53-Light source; 54-First housing; 541-Second accommodating cavity; 542-First viewing window; 543-Second viewing window; 6-Speed ​​measuring component; 61-Speed ​​measuring element; 62-First driving component; 63-Second housing; 631-Third accommodating cavity; 632-Fifth viewing window; 7-Purge assembly; 71-Adjusting bracket; 72-Air knife; 8-Cooling assembly; 81-First frame; 811-First air outlet; 82-Water cooling pipe; 83-Water cooling block. Detailed Implementation

[0021] The following specific examples illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0022] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of the present invention. The drawings only show the components related to the present invention and are not drawn according to the actual number, shape and size of the components in the actual implementation. In the actual implementation, the shape, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.

[0023] In the following description, numerous details are explored to provide a more thorough explanation of embodiments of the invention. However, it will be apparent to those skilled in the art that embodiments of the invention may be practiced without these specific details. In other embodiments, well-known structures and devices are shown in block diagram form rather than in detail to avoid obscuring embodiments of the invention.

[0024] Please see Figure 1 An embodiment of the present invention provides a steel pipe surface defect detection device for detecting surface defects of steel pipes 1 of different diameters. The steel pipe surface defect detection device includes a housing 2, a centering adjustment mechanism and a detection mechanism.

[0025] The centering adjustment mechanism includes a conveying component 3 and a lifting component 4. The lifting component 4 is connected to the conveying end of the conveying component 3, enabling the conveying component 3 to drive the lifting component 4 to move along a first direction. For example, the first direction is... Figure 1 The X direction in the figure is the length direction of shell 2.

[0026] The lifting assembly 4 has a movable end, and the housing 2 is connected to the movable end of the lifting assembly 4, so that the lifting assembly 4 can drive the housing 2 to move along a second direction. For example, the second direction is... Figure 1 The Y direction in the figure is the height direction of shell 2.

[0027] The housing 2 is provided with a through hole 201, through which the steel pipe 1 passes. Since the second direction is perpendicular to the first direction, the centering adjustment mechanism can move the housing 2 in both directions of the vertical plane. When the diameter of the steel pipe 1 from the previous batch is different from that of the current batch, the conveying assembly 3 moves the housing 2 in the first direction, and the lifting assembly 4 moves the housing 2 in the second direction, so that the through hole 201 of the housing 2 is coaxially arranged with the steel pipe 1. Without changing the diameter of the through hole 201, i.e., without changing the size of the housing 2, this arrangement facilitates the passage of steel pipes 1 of various diameters through the through hole 201 into the housing 2, thereby enabling the testing mechanism to test steel pipes 1 of different diameters.

[0028] For example, when the diameter of the steel pipe 1 in the previous batch is different from that in the current batch, after the through hole 201 of the housing 2 is adjusted to be coaxial with the steel pipe 1 in the current batch, the steel pipe 1 in the current batch is then allowed to pass through the through hole 201 of the housing 2.

[0029] For example, the housing 2 is provided with steel pipe 1 conveying devices on both sides along the center line direction of the through hole 201, and the steel pipe 1 can be moved along the center line direction of the through hole 201 by the steel pipe 1 conveying devices.

[0030] Please see Figure 2In one example, the conveying assembly 3 includes a base 31, a linear guide 32, a rack 33, a gear 34, a third drive member 35, and a moving plate 36. The linear guide 32 and rack 33 are both mounted on the base 31. The moving plate 36 is mounted on the slider of the linear guide 32. The third drive member 35 is mounted on the moving plate 36, and the drive end of the third drive member 35 is equipped with a gear 34, which meshes with the rack 33. When the third drive member 35 drives the gear 34 to rotate, the meshing of the gear 34 with the rack 33 causes the moving plate 36 to move along the length direction of the linear guide 32, i.e., along the first direction.

[0031] The lifting assembly 4 is mounted on the movable plate 36 and moves synchronously with the movable plate 36. The lifting assembly 4 includes a bearing 41, a guide pin 42, a fourth drive component 43, a transmission component 44, and a screw jack 45. The housing 2 is mounted on the end of the screw of the screw jack 45, and the guide pin 42 is mounted on the housing 2 and moves synchronously with the housing 2. The bearing 41 is mounted on the movable plate 36, and the guide pin 42 cooperates with the bearing 41 to guide the movement of the housing 2 in the second direction. The fourth drive component 43, the transmission component 44, and the screw jack 45 are all mounted on the movable plate 36. The screw jack 45 is connected to the fourth drive component 43 through the transmission component 44, so that the fourth drive component 43 can drive the screw of the screw jack 45 to move in the second direction. The movement of the screw causes the housing 2 to move synchronously in the second direction.

[0032] For example, both the third drive unit 35 and the fourth drive unit 43 can be configured as servo motors, etc.

[0033] Please see Figure 2 , Figure 3 , Figure 4 and Figure 5 In one embodiment, the housing 2 has a first accommodating cavity 202, and the inner wall of the through hole 201 has a first detection port 203 and a second detection port 204 communicating with the first accommodating cavity 202. A detection mechanism is disposed within the first accommodating cavity 202, and the detection mechanism includes an image acquisition component 5. The image acquisition component 5 includes an image capturing element 51, which is correspondingly disposed with the second detection port 204 and is used to capture a surface image of the steel pipe 1. Surface defects of the steel pipe 1 can be determined from the surface image of the steel pipe 1.

[0034] The testing mechanism also includes a speed measuring component 6, which includes a speed measuring element 61. This speed measuring element 61 is correspondingly set with the first detection port 203 and is used to detect the moving speed of the steel pipe 1. By measuring the moving speed of the steel pipe 1 and combining it with the moving time of the steel pipe 1, the location of the defects on the upper surface of the steel pipe 1 can be determined, which helps to improve the detection efficiency of surface defects of the steel pipe 1.

[0035] For example, when the speed measuring device 61 detects the moving speed of the steel pipe 1, the image capturing device 51 is activated to capture an image of the surface of the steel pipe 1. The speed measuring device 61 can be a Doppler velocimeter, and the image capturing device 51 can be a 2D line scan camera, a 3D camera, or a combination of a 2D line scan camera and a 3D camera.

[0036] Please see Figure 2 , Figure 3 and Figure 6 In some embodiments, the housing 2 further includes a third viewing window 205 and a fourth viewing window 206. The first detection port 203 is equipped with the third viewing window 205, which can protect the speed measuring component 61 corresponding to the first detection port 203. The second detection port 204 is equipped with the fourth viewing window 206, which can protect the image capturing component 51 corresponding to the second detection port 204.

[0037] For example, both the third viewport 205 and the fourth viewport 206 can be set as glass windows.

[0038] Please see Figure 2 and Figure 6 In one example, each fourth viewing window 206 is equipped with a purging assembly 7, which is located on the side of the fourth viewing window 206 near the through hole 201. The dust located in the fourth viewing window 206 can be cleaned away by the purging assembly 7, which helps to improve the detection accuracy of the detection agency.

[0039] For example, the purging assembly 7 includes an adjusting bracket 71 and an air knife 72. The adjusting bracket 71 is mounted on the housing 2 and located on the inner wall of the through hole 201 of the housing 2. The air knife 72 is mounted on the adjusting bracket 71, and the angle between the airflow blown from the second air outlet of the air knife 72 and the fourth viewing window 206 can be adjusted by the adjusting bracket 71, which is beneficial for the air knife 72 to clean the dust located in the fourth viewing window 206.

[0040] Please see Figure 3In one example, the housing 2 includes a second frame 21, a back plate 22, an outer side plate 23, an inner side plate 24, a door panel 25, and a mounting plate 26. The back plate 22, outer side plate 23, and inner side plate 24 can be welded together and connected to the second frame 21, so that the second frame 21 supports the back plate 22, outer side plate 23, and inner side plate 24. The inner side plate 24 encloses a through hole 201. The door panel 25 is positioned opposite the back plate 22 and hinged to the outer side plate 23 to allow for opening and closing. The back plate 22, outer side plate 23, inner side plate 24, and door panel 25 enclose a first receiving cavity 202. By opening the door panel 25, structural components can be installed into the first receiving cavity 202, and the contents of the first receiving cavity 202 can be observed. The mounting plate 26 is mounted on the side of the second frame 21 near the back plate 22 and is located within the first receiving cavity 202.

[0041] For example, the testing unit can be mounted on the mounting plate 26.

[0042] Please see Figure 4 and Figure 5 In some embodiments, the speed measuring component 6 further includes a first driving member 62, the driving end of which is connected to a speed measuring member 61, and the speed measuring member 61 is positioned facing the center line of the through hole 201. When the diameter of the steel pipe 1 in the previous batch is different from that in the current batch, the first driving member 62 drives the speed measuring member 61 to move closer to or away from the center line of the through hole 201, so that the minimum distance between the speed measuring member 61 and the outer wall of the steel pipe 1 is the optimal speed measuring distance, which helps to improve the accuracy of the speed measuring member 61.

[0043] The image acquisition component 5 also includes a second driving member 52. The driving end of the second driving member 52 is connected to an image capturing member 51, which is positioned facing the center line of the through hole 201. When the diameter of the steel pipes 1 in the previous batch differs from that in the current batch, the second driving member 52 drives the image capturing member 51 closer to or further away from the center line of the through hole 201. This ensures that the minimum distance between the image capturing member 51 and the outer wall of the steel pipe 1 is the optimal shooting distance. This improves the clarity of the surface image of the steel pipe 1 captured by the image capturing member 51, thereby improving the accuracy of surface defect detection of the steel pipe 1.

[0044] For example, both the first drive member 62 and the second drive member 52 can be configured as an electric slide table, etc.

[0045] Please see Figure 4In one example, to improve the clarity of the surface image of the steel pipe 1 captured by the image capturing unit 51, the image acquisition component 5 also includes a light source 53. The light source 53 is correspondingly configured with the second detection port 204, and the light emitted by the light source 53 passes through the second detection port 204 and illuminates the outer wall of the steel pipe 1. Each image capturing unit 51 is equipped with a light source 53. When the image capturing unit 51 captures a surface image of the steel pipe 1, the light emitted by the light source 53 illuminates the surface of the steel pipe 1, making the surface image of the steel pipe 1 captured by the image capturing unit 51 clearer, which is beneficial to improving the accuracy of surface defect detection of the steel pipe 1.

[0046] In some embodiments, the image acquisition component 5 further includes a first housing 54, which is disposed at the driving end of the second driving member 52, so that the second driving member 52 can drive the first housing 54 to move. The first housing 54 is provided with a second accommodating cavity 541, and the image capturing member 51 and the light source 53 are both disposed in the second accommodating cavity 541. The first housing 54 can protect the image capturing member 51 and the light source 53. The first housing 54 is also provided with a first viewing window 542 and a second viewing window 543. The image capturing member 51 is correspondingly disposed with the first viewing window 542, so that the image capturing member 51 captures the surface image of the steel pipe 1 through the first viewing window 542; the light source 53 is correspondingly disposed with the second viewing window 543, so that the light emitted by the light source 53 passes through the second viewing window 543 and illuminates the outer wall of the steel pipe 1.

[0047] For example, both the first viewport 542 and the second viewport 543 can be set as glass windows.

[0048] Please see Figure 2 and Figure 3 In one example, multiple sets of image acquisition components 5 are provided, and these multiple sets of image acquisition components 5 are evenly distributed along the circumference of the through hole 201. Each set of image acquisition components 5 is configured with a second detection port 204. That is, multiple image capturing elements 51 are distributed circumferentially along the through hole 201 of the housing 2, so as to realize the acquisition of surface images of the steel pipe 1 from different angles through multiple image capturing elements 51, thereby obtaining a complete image of the circumferential surface of the steel pipe 1, which is beneficial for the detection of circumferential surface defects of the steel pipe 1.

[0049] For example, the number of image acquisition components 5 is not limited and can be adapted to meet actual needs. The number of image acquisition components 5 can be determined based on the range captured by the image capturing component 51.

[0050] In one example, a set of speed measurement components 6 is provided, and the speed measurement components 6 can be set between two adjacent image acquisition components 5.

[0051] Please see Figure 2 , Figure 3 and Figure 6 In some embodiments, since the production line for producing steel pipe 1 has a high temperature, a cooling component 8 is provided in the first accommodating cavity 202 to cool down the testing mechanism in order to ensure the normal operation of the testing mechanism.

[0052] In one example, the cooling assembly 8 includes a first frame 81 and a water-cooling pipe 82. The first frame 81 surrounds the outer periphery of the detection mechanism, and the water-cooling pipe 82 is disposed on the first frame 81. Cooling water flows within the water-cooling pipe 82 to lower the temperature within the first accommodating cavity 202 of the housing 2. A gas passage is provided inside the first frame 81, and a first air outlet 811 communicating with the gas passage is provided on the first frame 81. Cold air is introduced into the first accommodating cavity 202 of the housing 2 through the first air outlet 811 to achieve the purpose of lowering the temperature within the first accommodating cavity 202.

[0053] For example, the water-cooled pipe 82 has an inlet and an outlet, both of which are connected to an industrial chiller. The industrial chiller pumps cooling water into the water-cooled pipe 82 through the inlet and the cooling water entering the industrial chiller through the outlet is cooled by the industrial chiller.

[0054] The gas passage of the first frame 81 is connected to an industrial air conditioner. The industrial air conditioner inputs cold air into the gas passage, and the cold air enters the first accommodating cavity 202 through the first air outlet 811. It should be noted that the housing 2 is also provided with a third air outlet, which is used to make the pressure inside the first accommodating cavity 202 the same as the external pressure.

[0055] The first frame 81 is mounted on the second frame 21 of the housing 2, and the first frame 81 is located in the middle of the thickness direction of the first accommodating cavity 202.

[0056] Please see Figure 4 and Figure 5 In some embodiments, to rapidly cool the speed measuring component 6 and the image acquisition component 5, the cooling component 8 further includes a water-cooling block 83. The water-cooling block 83 is provided with cooling water channels through which cooling water flows. The image acquisition component 5 includes a first housing 54, and the image capturing component 51 and the light source 53 are both installed in the second accommodating cavity 541 of the first housing 54. The speed measuring component 6 includes a second housing 63, which has a third accommodating cavity 631, and the speed measuring component 61 is installed in the third accommodating cavity 631. By installing water-cooling blocks 83 on the outer walls of both the first housing 54 and the second housing 63, the first housing 54 and the second housing 63 are cooled by the water-cooling blocks 83, thereby achieving the purpose of cooling the image capturing component 51, the light source 53, and the speed measuring component 61.

[0057] In one example, the cooling water channel of the water-cooled block 83 has an inlet and an outlet, both of which are connected to an industrial chiller.

[0058] In one example, a fifth viewing window 632 is provided on the second housing 63, and a speed measuring element 61 is correspondingly provided with the fifth viewing window 632 so that the speed measuring element 61 can detect the moving speed of the steel pipe 1 through the fifth viewing window 632. Furthermore, the second housing 63 is mounted on the driving end of the first driving element 62 so that the first driving element 62 can drive the second housing 63 to move.

[0059] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A steel pipe surface defect detection device, used to detect surface defects in steel pipes of different diameters, characterized in that, The steel pipe surface defect detection device includes: The centering adjustment mechanism includes a conveying component and a lifting component connected to each other. The conveying component can drive the lifting component to move along a first direction. The lifting component has a movable end. The housing is connected to the movable end, and the lifting assembly can drive the housing to move along a second direction, which is perpendicular to the first direction; the housing has a first accommodating cavity, and the housing is provided with a through hole for the steel pipe to pass through the housing, and the inner wall of the through hole is provided with a first detection port and a second detection port communicating with the first accommodating cavity; The detection mechanism is disposed within the first accommodating cavity. The detection mechanism includes a speed measuring component and an image acquisition component. The speed measuring component includes a speed measuring element, which is disposed corresponding to the first detection port and is used to detect the moving speed of the steel pipe. The image acquisition component includes an image capturing element, which is disposed corresponding to the second detection port and is used to capture a surface image of the steel pipe.

2. The steel pipe surface defect detection device according to claim 1, characterized in that: The speed measuring component further includes a first driving member, the driving end of which is connected to the speed measuring member. The speed measuring member is positioned toward the center line of the via. The first driving member drives the speed measuring member to move closer to or away from the center line of the via. The image acquisition component further includes a second driving member, the driving end of which is connected to the image capturing member. The image capturing member is positioned toward the center line of the via. The second driving member drives the image capturing member to move closer to or away from the center line of the via.

3. The steel pipe surface defect detection device according to claim 2, characterized in that: The image acquisition component also includes a light source, which is configured corresponding to the second detection port, and each image capturing device is equipped with one light source.

4. The steel pipe surface defect detection device according to claim 3, characterized in that: The image acquisition component further includes a first housing, which is disposed at the driving end of the second driving component; the first housing is provided with a second accommodating cavity, a first viewing window and a second viewing window, the image capturing component and the light source are both disposed in the second accommodating cavity, and the image capturing component is disposed corresponding to the first viewing window, and the light source is disposed corresponding to the second viewing window.

5. The steel pipe surface defect detection device according to claim 4, characterized in that: The image acquisition components are provided in multiple sets, and the multiple sets of image acquisition components are evenly distributed along the circumference of the via, and each set of image acquisition components is configured with a second detection port.

6. The steel pipe surface defect detection device according to claim 1, characterized in that: The steel pipe surface defect detection device also includes a cooling component, which is disposed in the first accommodating cavity and is used to cool the detection mechanism.

7. The steel pipe surface defect detection device according to claim 6, characterized in that: The cooling assembly includes a first frame and a water-cooling pipe. The first frame surrounds the outer periphery of the detection mechanism, and the water-cooling pipe is provided on the first frame, with cooling water flowing inside the water-cooling pipe. A gas channel is provided inside the first frame, and a first air outlet communicating with the gas channel is provided on the first frame. The first air outlet is used to output cold air.

8. The steel pipe surface defect detection device according to claim 7, characterized in that: The cooling assembly further includes a water-cooled block, which is provided with a cooling water channel in which cooling water flows; the image acquisition assembly includes a first housing, the speed measuring assembly includes a second housing, the second housing has a third accommodating cavity, the speed measuring element is disposed in the third accommodating cavity, and the water-cooled block is disposed on the outer wall of both the first housing and the second housing.

9. The steel pipe surface defect detection device according to any one of claims 1-8, characterized in that: The housing also includes a third viewing window and a fourth viewing window, with the first detection port configured with the third viewing window and the second detection port configured with the fourth viewing window.

10. The steel pipe surface defect detection device according to claim 9, characterized in that: The steel pipe surface defect detection device also includes a purging assembly. Each of the fourth viewing windows is equipped with a purging assembly, which is located on the side of the fourth viewing window near the through hole.

Images