Tunnel steel pipe weld detection device

Abstract

The utility model relates to the technical field of weld detection device, concretely relates to tunnel steel pipe weld detection device for detecting the weld of steel pipe body, including: base, drive component sets up the top of base and has several groups for making steel pipe body rotate around its own axis along the length direction distribution of steel pipe body, limiting component sets up both ends of base top, and can contact with the end surface of steel pipe body, and limiting component can reciprocate on the base, weld detection component sets up on the base and can carry out the detection to the weld on steel pipe body, the limiting component includes the limiting wheel that can contact with the end surface of steel pipe body and can follow the synchronous rotation of steel pipe body, the utility model discloses setting up the limiting component of limiting steel pipe on both ends of base, for limiting the axial movement of steel pipe, avoids the deviation of steel pipe when rotating and influences the detection.

Description

Technical Field

[0001] This utility model relates to the technical field of weld seam inspection devices, specifically a weld seam inspection device for tunnel steel pipes. Background Technology

[0002] In modern large-scale engineering projects such as water conservancy and transportation, tunnel construction often involves the laying and installation of steel pipes. The steel pipes are 4 meters in diameter and have three water-blocking rings and several stiffening rings installed on their exterior. The water-blocking rings and stiffening rings are fitted onto the outside of the steel pipe and then welded. After welding, the quality of the weld needs to be inspected to ensure that there are no incomplete welds.

[0003] Existing inspection devices, such as those that use roller frames to rotate steel pipes for inspection, place the pipe on rollers, and the rotation of the rollers causes the pipe to rotate and be inspected by a probe. However, because the rollers rotate the pipe, it is prone to axial or radial displacement during this process. If the ground is uneven, the stability of the roller frame itself will be affected, further exacerbating the pipe displacement problem. After the pipe shifts, the relative position between the probe and the weld changes, making it impossible to maintain the optimal inspection distance and angle. This not only leads to distorted inspection signals, affecting the accuracy of defect identification, but may also cause missed detections or even damage the probe if the distance between the probe and the pipe surface is too close or too far. Utility Model Content

[0004] The purpose of this utility model is to provide a tunnel steel pipe weld inspection device. By setting limiting components at both ends of the base to limit the axial movement of the steel pipe, the device can prevent the steel pipe from shifting during rotation and affecting the inspection.

[0005] To address the problems of existing technologies, this utility model provides a tunnel steel pipe weld inspection device for inspecting welds on the steel pipe body; it includes: a base; a driving assembly, which is disposed above the base and has several sets of components distributed along the length of the steel pipe body for rotating the steel pipe body around its own axis; a limiting assembly, which is disposed at both ends of the top of the base and can contact the end face of the steel pipe body, and the limiting assembly can reciprocate on the base; and a weld inspection assembly, which is disposed on the base and can inspect the welds on the steel pipe body; the limiting assembly includes limiting wheels that can contact the end face of the steel pipe body and can rotate synchronously with the steel pipe body.

[0006] Preferably, the cross-section of the limiting wheel is stepped and is divided into a limiting part and a supporting part. The supporting part is lower than the limiting part. Several balls are rotatably arranged on the limiting part. The balls on the limiting part are in contact with the end face of the steel pipe body, and the outer circumferential surface of the supporting part is in contact with the outer circumferential surface of the steel pipe body.

[0007] Preferably, the limiting component further includes a slide rail fixed to the base and arranged parallel to the length direction of the base, and the limiting component further includes a slide plate slidably arranged on the slide rail. A second bearing seat is fixedly arranged on the top of the slide plate, and the second bearing seat is rotatably connected to the limiting wheel.

[0008] Preferably, the limiting component further includes a fixing component disposed on the skateboard for fixing the skateboard to the base.

[0009] Preferably, the drive assembly includes a first bearing seat fixed on the base, and a drive wheel is rotatably disposed on the first bearing seat. The drive assembly also includes a first rotary drive member fixed on the base and used to rotate the drive wheel, wherein the outer circumferential surface of the drive wheel is in contact with the outer circumferential surface of the steel pipe body.

[0010] Preferably, the weld inspection assembly includes an inspection probe capable of reciprocating along the length of the steel pipe body and a support block rotatably connected to the inspection probe, and the support block is further provided with a third rotary drive component capable of driving the inspection probe to rotate.

[0011] Preferably, the weld detection assembly further includes a telescopic drive for driving the detection probe closer to or further away from the steel pipe body, the output end of the telescopic drive is connected to the support block, and the weld detection assembly further includes a second rotary drive for driving the telescopic drive to rotate.

[0012] Preferably, the weld inspection assembly further includes a moving mechanism disposed on the base and a moving plate disposed on the moving mechanism and capable of reciprocating, wherein a support column is fixed at the center of the top of the moving plate, and a second rotary drive component is fixedly mounted on the support column.

[0013] The advantages of this utility model compared to the prior art are: To address the issue of axial displacement that easily occurs when existing roller frames drive the steel pipe body to rotate, this application employs a limiting component to restrict the movement of the steel pipe body. The core component of the limiting component is a limiting wheel, which is positioned at the end face of the steel pipe body. This wheel has a stepped structure and consists of a limiting part and a supporting part. The ball bearings on the limiting part directly contact the end face of the steel pipe body, providing axial constraint. The outer circumferential surface of the supporting part is in close contact with the outer circumferential surface of the steel pipe body, providing radial support. When the steel pipe body rotates under the drive of the drive component, the limiting wheel rotates synchronously with the steel pipe body through friction. During this process, the limiting part consistently provides axial resistance to the end face of the steel pipe body, effectively limiting axial displacement. This design will not interfere with the normal rotation of the steel pipe body, and can eliminate the risk of axial displacement through the rigid constraint of the mechanical structure. It ensures that the steel pipe body maintains a stable axial position during rotation, providing a reliable guarantee for the consistency of the relative position between the detection probe and the weld, thereby avoiding problems such as detection signal distortion, missed detection, and probe damage caused by the displacement of the steel pipe body. Attached Figure Description

[0014] Figure 1 This is a first three-dimensional structural schematic diagram of the tunnel steel pipe weld inspection device of this utility model.

[0015] Figure 2 This is a second three-dimensional structural schematic diagram of the tunnel steel pipe weld inspection device of this utility model.

[0016] Figure 3 This is a schematic diagram of the third three-dimensional structure of the tunnel steel pipe weld inspection device of this utility model.

[0017] Figure 4 This is a three-dimensional structural diagram of the limiting component of the tunnel steel pipe weld detection device of this utility model.

[0018] Figure 5 This is a three-dimensional structural diagram of the limiting wheel of the tunnel steel pipe weld inspection device of this utility model.

[0019] Figure 6 This is a first three-dimensional structural diagram of the weld detection component of the tunnel steel pipe weld detection device of this utility model.

[0020] Figure 7 This is a schematic diagram of the second three-dimensional structure of the weld detection component of the tunnel steel pipe weld detection device of this utility model.

[0021] The following components are labeled in the diagram: 1. Base; 11. Drive assembly; 111. First bearing seat; 112. Drive wheel; 113. First rotary drive component; 12. Limiting assembly; 121. Slide plate; 122. Slide rail; 123. Second bearing seat; 124. Limiting wheel; 1241. Ball bearing; 125. Fixing assembly; 13. Weld inspection assembly; 131. Moving mechanism; 132. Moving plate; 133. Support column; 134. Second rotary drive component; 135. Telescopic drive component; 136. Support block; 137. Inspection probe; 138. Third rotary drive component; 100. Steel pipe body. Detailed Implementation

[0022] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0023] Reference Figures 1-7 As shown, this utility model provides a tunnel steel pipe weld inspection device for inspecting welds on a steel pipe body 100; it includes: a base 1; a drive assembly 11, which is disposed above the base 1 and has several sets of components distributed along the length of the steel pipe body 100 for rotating the steel pipe body 100 around its own axis; a limiting assembly 12, which is disposed at both ends of the top of the base 1 and can contact the end face of the steel pipe body 100, and the limiting assembly 12 can reciprocate on the base 1; and a weld inspection assembly 13, which is disposed on the base 1 and can inspect welds on the steel pipe body 100; the limiting assembly 12 includes a limiting wheel 124 that can contact the end face of the steel pipe body 100 and can rotate synchronously with the steel pipe body 100.

[0024] When inspecting the weld of the steel pipe body 100, the position of the limiting component 12 is first adjusted according to the length of the steel pipe body 100 by the reciprocating movement of the limiting component 12 on the base 1, so that the limiting component 12 contacts the end face of the steel pipe body 100. At this time, the drive component 11 is activated, and several sets of drive components 11 work together to drive the steel pipe body 100 to rotate around its own axis. During the rotation of the steel pipe body 100, the limiting wheel 124 in the limiting component 12 rotates synchronously with the steel pipe body 100. The limiting wheel 124 constrains the steel pipe body 100, restricting its axial movement and ensuring that the steel pipe body 100 always rotates in the preset axial position. At the same time, the weld inspection component 13 starts to work, continuously inspecting the weld on the surface of the steel pipe body 100 during its rotation, capturing weld defect information, and completing a comprehensive inspection of the weld of the steel pipe body 100.

[0025] The cross-section of the limiting wheel 124 is stepped and is divided into a limiting part and a supporting part. The supporting part is lower than the limiting part. Several balls 1241 are rotatably arranged on the limiting part. The balls 1241 on the limiting part are in contact with the end face of the steel pipe body 100, and the outer circumferential surface of the supporting part is in contact with the outer circumferential surface of the steel pipe body 100.

[0026] As one of the core limiting structures of the limiting wheel 124, the limiting part has several rolling balls 1241 rotatably mounted on its surface. When the limiting assembly 12 engages with the steel pipe body 100, the rolling balls 1241 on the limiting part directly contact the end face of the steel pipe body 100. The rotational characteristics of the rolling balls 1241 can convert the sliding friction between the limiting part and the end face of the steel pipe body 100 into rolling friction, significantly reducing the frictional force when they come into contact. This design ensures that the limiting part provides axial blocking to the end face of the steel pipe body 100, effectively limiting the axial displacement of the steel pipe body 100, while also preventing wear on the end face of the steel pipe body 100 due to excessive friction. At the same time, it does not interfere with the normal rotation of the steel pipe body 100, ensuring that the steel pipe body 100 is always under stable axial constraint during rotation.

[0027] The limiting assembly 12 also includes a slide rail 122 fixed to the base 1 and arranged parallel to the length direction of the base 1. The limiting assembly 12 also includes a slide plate 121 slidably arranged on the slide rail 122. A second bearing seat 123 is fixedly arranged on the top of the slide plate 121, and the second bearing seat 123 is rotatably connected to the limiting wheel 124. The limiting assembly 12 also includes a fixing assembly 125 arranged on the slide plate 121 for fixing the slide plate 121 to the base 1.

[0028] By sliding on the slide rail 122, the slide plate 121 can drive the limiting wheel 124 to move along the length direction of the base 1, thereby adapting to steel pipe bodies 100 of different lengths. For example, when detecting a longer steel pipe body 100, the slide plate 121 can be slid to increase the distance between the two limiting wheels 124; when detecting a shorter steel pipe, the distance is reduced to ensure that the limiting wheel 124 can contact the end face of the steel pipe body 100. This adjustability allows the limiting component 12 to overcome the limitations of a fixed structure, greatly improving the versatility of the device. The fixing component 125 is provided on the slide plate 121 and is used to fix the slide plate 121 to the base 1 after it has been adjusted to the appropriate position. When the limiting wheel 124 is adjusted to a position that fits against the end face of the steel pipe body 100 via the sliding plate 121, the fixing component 125 can rigidly connect the sliding plate 121 to the slide rail 122 or the base 1 through a locking structure (such as bolts, buckles, clamps, etc.) to prevent the sliding plate 121 from shifting due to vibration or other factors during the rotation of the steel pipe body 100. The drive assembly 11 includes a first bearing seat 111 fixed on the base 1, and a drive wheel 112 is rotatably disposed on the first bearing seat 111. The drive assembly 11 also includes a first rotary drive member 113 fixed on the base 1 and used to rotate the drive wheel 112. The outer circumferential surface of the drive wheel 112 is in contact with the outer circumferential surface of the steel pipe body 100.

[0029] After the first rotary drive component 113 is started, it drives the drive wheel 112 to rotate on the first bearing seat 111 through the transmission structure. The drive wheel 112 uses the friction with the outer circumferential surface of the steel pipe body 100 to transmit the rotational power to the steel pipe body 100, so that the steel pipe body 100 rotates around its own axis.

[0030] The weld inspection assembly 13 includes an inspection probe 137 that can reciprocate along the length of the steel pipe body 100 and a support block 136 that is rotatably connected to the inspection probe 137. The support block 136 is also provided with a third rotary drive 138 that can drive the inspection probe 137 to rotate.

[0031] The detection probe 137 is the component that directly performs the detection task, and it can reciprocate along the length of the steel pipe body 100. The detection probe 137 typically integrates ultrasonic, X-ray, or magnetic particle detection modules, enabling it to acquire defect signals from the weld area in real time and convert these signals into analyzable data, providing a basis for subsequent quality assessment. For example, when the detection probe 137 moves to a certain position on the weld, if a crack defect is detected, the coordinates of that position and the defect parameters can be recorded immediately. The support block 136 is rotatably connected to the detection probe 137, providing a stable mounting base for the detection probe 137 to ensure that its position does not shift due to vibration during movement and rotation; furthermore, the rotatable connection structure provides the detection probe 137 with the freedom to rotate around the support point.

[0032] The weld inspection assembly 13 also includes a telescopic drive 135 for driving the inspection probe 137 closer to or further away from the steel pipe body 100. The output end of the telescopic drive 135 is connected to the support block 136. The weld inspection assembly 13 also includes a second rotary drive 134 for driving the telescopic drive 135 to rotate. The weld inspection assembly 13 also includes a moving mechanism 131 disposed on the base 1 and a moving plate 132 disposed on the moving mechanism 131 and capable of reciprocating. A support column 133 is fixed at the center of the top of the moving plate 132, and the second rotary drive 134 is fixedly mounted on the support column 133.

[0033] The moving mechanism 131 is mounted on the base 1, serving as the moving carrier for the moving plate 132 and providing power and guidance for the movement of the detection probe 137 along the length of the steel pipe body 100. It can be a transmission structure such as a lead screw or guide rail, or a belt drive mechanism, capable of precisely controlling the moving distance and speed of the moving plate 132 through mechanical transmission. The second rotary drive component 134, fixed to the top of the support column 133, primarily drives the telescopic drive component 135 to rotate, increasing the degree of freedom for the detection probe 137 to rotate around the axis of the support column 133. The output end of the telescopic drive component 135 is connected to the support block 136. Its core function is to drive the detection probe 137 to move closer to or further away from the steel pipe body 100. The moving mechanism 131 drives all the components above to move along the length of the steel pipe through the moving plate 132 and the support column 133, providing a wide range of position adjustment for the detection probe 137. The second rotary drive component 134 drives the telescopic drive component 135 and the detection probe 137 to rotate as a whole, realizing circumferential angle adjustment. The telescopic drive component 135 controls the distance between the detection probe 137 and the surface of the steel pipe. The third rotary drive component 138 is responsible for fine-tuning the detection angle of the detection probe 137. These four adjustment structures form a multi-level motion control of "wide range of movement - circumferential rotation - radial telescopic - angle fine-tuning", enabling the detection probe 137 to adapt to the weld position from a three-dimensional spatial perspective. In actual testing, this multi-level adjustment capability works more closely with the drive assembly 11 and the limiting assembly 12: after the limiting assembly 12 fixes the axial position of the steel pipe body 100, the moving mechanism 131 can preset the moving range of the moving plate 132 according to the length of the steel pipe; when the drive assembly 11 drives the steel pipe body 100 to rotate, the second rotating drive component 134 can compensate for the possible small radial runout of the steel pipe in real time, and ensure that the detection probe 137 is always aligned with the weld seam through rotation adjustment; if there is a slight error in the diameter of the steel pipe, the telescopic drive component 135 can dynamically adjust the detection distance to avoid affecting the detection signal due to the change in spacing.

[0034] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A tunnel steel pipe weld inspection device, used to inspect the welds of the steel pipe body (100); characterized in that... ,include: Base (1); The drive assembly (11) is located above the base (1) and has several sets of components distributed along the length of the steel pipe body (100) for rotating the steel pipe body (100) around its own axis. Limiting components (12) are provided at both ends of the top of the base (1) and can contact the end face of the steel pipe body (100), and the limiting components (12) can reciprocate on the base (1); A weld inspection assembly (13) is mounted on a base (1) and is capable of inspecting welds on the steel pipe body (100); The limiting component (12) includes a limiting wheel (124) that can contact the end face of the steel pipe body (100) and rotate synchronously with the steel pipe body (100).

2. The tunnel steel pipe weld inspection device according to claim 1, characterized in that... The limiting wheel (124) has a stepped cross section and is divided into a limiting part and a supporting part. The supporting part is lower than the limiting part. Several balls (1241) are rotatably arranged on the limiting part. The balls (1241) on the limiting part are in contact with the end face of the steel pipe body (100). The outer circumferential surface of the supporting part is in contact with the outer circumferential surface of the steel pipe body (100).

3. The tunnel steel pipe weld inspection device according to claim 2, characterized in that, The limiting component (12) also includes a slide rail (122) fixed on the base (1) and arranged parallel to the length direction of the base (1). The limiting component (12) also includes a slide plate (121) slidably arranged on the slide rail (122). A second bearing seat (123) is also fixedly arranged on the top of the slide plate (121), and the second bearing seat (123) is rotatably connected to the limiting wheel (124).

4. The tunnel steel pipe weld inspection device according to claim 3, characterized in that... The limiting component (12) further includes a fixing component (125) disposed on the slide plate (121) for fixing the slide plate (121) to the base (1).

5. The tunnel steel pipe weld inspection device according to claim 1, characterized in that... The drive assembly (11) includes a first bearing seat (111) fixed on the base (1), and a drive wheel (112) is rotatably mounted on the first bearing seat (111). The drive assembly (11) also includes a first rotary drive member (113) fixed on the base (1) and used to rotate the drive wheel (112). The outer circumferential surface of the drive wheel (112) is in contact with the outer circumferential surface of the steel pipe body (100).

6. The tunnel steel pipe weld inspection device according to claim 1, characterized in that... The weld inspection assembly (13) includes an inspection probe (137) that can reciprocate along the length of the steel pipe body (100) and a support block (136) that is rotatably connected to the inspection probe (137). The support block (136) is also provided with a third rotary drive (138) that can drive the inspection probe (137) to rotate.

7. The tunnel steel pipe weld inspection device according to claim 6, characterized in that... The weld detection assembly (13) further includes a telescopic drive (135) for driving the detection probe (137) to approach or move away from the steel pipe body (100). The output end of the telescopic drive (135) is connected to the support block (136). The weld detection assembly (13) further includes a second rotation drive (134) for driving the telescopic drive (135) to rotate.

8. The tunnel steel pipe weld inspection device according to claim 7, characterized in that... The weld inspection assembly (13) further includes a moving mechanism (131) disposed on the base (1) and a moving plate (132) disposed on the moving mechanism (131) and capable of reciprocating. A support column (133) is fixed at the center of the top of the moving plate (132), and a second rotating drive (134) is fixedly installed on the support column (133).

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