Weld joint detection mechanism applied to wind power tower drum

Abstract

The utility model relates to a welding seam detection mechanism applied to a wind power tower drum, the welding seam detection mechanism comprises a first sliding rail, a rotating mechanism and a detection assembly, the first sliding rail is used for being connected with a lifting device, and a mounting part of the rotating mechanism is slidably connected with the first sliding rail; a main body part of the rotating mechanism is arranged to rotate around a first preset rotating shaft relative to the mounting part, and the first preset rotating shaft is perpendicular to the extending direction of the first sliding rail and the extending direction of the wind power tower. According to the welding seam detection device, the detection assembly is arranged on the rotating mechanism, the rotating mechanism drives the detection mechanism to rotate, so that the welding seam detection mechanism is switched between the circular seam detection state and the vertical seam detection state, the detection angle of the detection mechanism is accurate on the premise that it is guaranteed that the detection mechanism can detect the circular seam and the vertical seam, and the detection accuracy is improved.

Description

Technical Field

[0001] This application relates to the technical field of pipe inspection, and particularly to a weld inspection mechanism applied to a wind power tower barrel. Background Art

[0002] Wind power tower barrels are usually welded and assembled from multiple prefabricated plate parts. The weld quality is related to the safe operation of the wind turbine. In the prior art, wall-climbing robots are usually used to inspect the welds.

[0003] However, there are both circumferential welds (also known as circumferential seams) and longitudinal welds (also known as vertical seams) in the wind power tower barrel. The existing wall-climbing inspection robots can only inspect the vertical seams, which affects the user experience. Utility Model Content

[0004] To overcome the problems existing in the related art, this application provides a weld inspection mechanism applied to a wind power tower barrel.

[0005] According to an embodiment of this application, there is provided a weld inspection mechanism applied to a wind power tower barrel, including:

[0006] A first slide rail, connected to a lifting device, and a first slider is arranged on the first slide rail;

[0007] A rotating mechanism, including a mounting part and a main body part. The mounting part is connected to the first slider, and the main body part is configured to be able to rotate relative to the mounting part around a first preset rotation axis. The first preset rotation axis is perpendicular to the extension direction of the first slide rail and perpendicular to the extension direction of the wind power tower barrel. The extension direction of the wind power tower barrel is perpendicular to the extension direction of the first slide rail;

[0008] At least one group of detection components, connected to the main body part, and the detection components include two detection probes;

[0009] Wherein, when the main body part rotates to a first preset state, the arrangement direction of the two detection probes is perpendicular to the extension direction of the vertical seam of the wind power tower barrel; when the main body part rotates to a second preset state, the arrangement direction of the two detection probes is parallel to the extension direction of the vertical seam to inspect the circumferential seam of the wind power tower barrel.

[0010] In some embodiments, the mounting part and the first slider form a rotational connection through a second preset rotation axis, and the second preset rotation axis is perpendicular to the first preset rotation axis and perpendicular to the arrangement direction of the two detection probes.

[0011] In some embodiments, the mounting part includes:

[0012] A first mounting plate, rotationally connected to the main body part;

[0013] A second mounting plate, which is slidably connected to the first mounting plate, with the sliding direction parallel to the first preset rotating shaft and connected to the first slider;

[0014] A first spring, which is arranged between the first mounting plate and the second mounting plate.

[0015] In some embodiments, the main body is provided with a strip-shaped mounting hole, the extending direction of the strip-shaped mounting hole is parallel to the arrangement direction of the two detection probes, and the detection probes are mounted on the strip-shaped mounting hole through fasteners.

[0016] In some embodiments, the main body is provided with at least one ball, the ball is rotatably connected to the main body, and when the ball is used to contact the wind power tower barrel, there is a preset distance between the detection probe and the wind power tower barrel.

[0017] In some embodiments, the detection probe is rotatably connected to the main body, the axis direction of the rotating shaft is perpendicular to the arrangement direction of the two detection probes, and is also perpendicular to the first preset rotating shaft.

[0018] In some embodiments, the main body is provided with a monitoring camera, and the monitoring camera faces the detection probe.

[0019] In some embodiments, the main body is further provided with two 3D cameras, the arrangement direction of the two 3D cameras is perpendicular to the arrangement direction of the two detection probes, and is also perpendicular to the axial direction of the first preset rotating shaft.

[0020] In some embodiments, the detection probe includes a phased array probe.

[0021] In some embodiments, the weld detection mechanism further includes:

[0022] A second slide rail, which is arranged on the first slider and extends along the axial direction of the first preset rotating shaft;

[0023] A third slide rail, which is arranged on the second slider of the second slide rail and extends along a direction perpendicular to the first slide rail and the second slide rail, and the mounting part is arranged on the third slider of the third slide rail.

[0024] The technical solution provided by the embodiments of the present application may include the following beneficial effects: The detection component is arranged on the rotating mechanism, and the rotating mechanism drives the detection mechanism to rotate, so that the weld detection mechanism switches between the circumferential weld detection state and the longitudinal weld detection state. On the premise that the detection mechanism can detect both circumferential welds and longitudinal welds, the detection angle of the detection mechanism is accurate, and the detection accuracy is improved.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and do not limit this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings herein are incorporated into and constitute a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application.

[0027] Figure 1 is a schematic diagram of a weld detection robot shown according to an exemplary embodiment.

[0028] Figure 2 is a schematic diagram of a weld detection mechanism in a first preset state shown according to an exemplary embodiment.

[0029] Figure 3 is a schematic diagram of a first slide rail shown according to an exemplary embodiment.

[0030] Figure 4 is a partial schematic diagram of a weld detection mechanism shown according to an exemplary embodiment.

[0031] Figure 5 is a schematic diagram of a rotation mechanism and a detection component shown according to an exemplary embodiment.

[0032] Figure 6 is a schematic diagram of a weld detection mechanism in a second preset state shown according to an exemplary embodiment.

[0033] REFERENCE MARKS:

[0034] Circumferential weld detection mechanism 100;

[0035] First slide rail 10; First slider 11;

[0036] Rotation mechanism 20; Mounting part 21; First mounting plate 211; Second mounting plate 212; First spring 213; Second preset rotating shaft 214; Return spring 215; Main body part 22; Strip-shaped mounting hole 221; Fastener 222; Ball 223; Second spring 224; First preset rotating shaft 23;

[0037] Detection component 30; Detection probe 31;

[0038] Surveillance camera 40;

[0039] 3D camera 50;

[0040] Second slide rail 60; Second slider 61;

[0041] Third slide rail 70; Third slider 71;

[0042] Wall-climbing robot 200. Detailed implementation manners

[0043] Here, exemplary embodiments will be described in detail, and examples thereof are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present application as detailed in the appended claims.

[0044] Wind power tower barrels are usually welded and assembled from multiple prefabricated plate parts, and the weld quality is related to the safe operation of the wind turbine. In the prior art, wall-climbing robots are usually used to detect the welds.

[0045] However, wind power tower barrels have both circumferential welds (also known as circumferential seams) and longitudinal welds (also known as vertical seams). Existing wall-climbing inspection robots can only detect vertical seams, which affects the user experience.

[0046] To solve the above problems, the present disclosure provides a weld detection mechanism applied to a wind power tower barrel. The weld detection mechanism includes a first slide rail, a rotating mechanism, and at least one set of detection components. The first slide rail is used to be connected to a lifting device. The mounting part of the rotating mechanism is slidably connected to the first slide rail. The main body part of the rotating mechanism is configured to be able to rotate relative to the mounting part around a first preset rotation axis. The first preset rotation axis is perpendicular to the extending direction of the first slide rail and perpendicular to the extending direction of the wind power tower barrel. When the main body part rotates to the first preset state, the arrangement directions of the two detection probes of the detection component are perpendicular to the extending direction of the vertical seam of the wind power tower barrel. When the main body part rotates to the second preset state, the arrangement directions of the two detection probes are parallel to the extending direction of the vertical seam to detect the circumferential seam of the wind power tower barrel. In the present disclosure, the detection component is arranged on the rotating mechanism, and the rotating mechanism drives the detection mechanism to rotate, so that the weld detection mechanism switches between the circumferential seam detection state and the vertical seam detection state. On the premise of ensuring that the detection mechanism can detect both circumferential seams and vertical seams, the detection angle of the detection mechanism is accurate, and the detection accuracy is improved.

[0047] According to an exemplary embodiment of the present disclosure, as Figure 1 shown, the present disclosure provides a weld detection mechanism 100 applied to a wind power tower barrel. The detection component 30 (detailed introduction later) on the weld detection mechanism 100 can detect the weld quality of the wind power tower barrel.

[0048] As Figures 1 to 4 shown, the weld detection mechanism 100 includes a first slide rail 10. The first slide rail 10 is used to be connected to a lifting device. The lifting device is, for example, a scaffold, an automatic lifting frame, a wall-climbing robot 200, etc. The lifting direction of the lifting device (Figure 1 The y - direction shown (i.e., the height / extension / axial direction of the wind turbine tower), the extension direction of the first slide rail 10 ( Figure 1 The x - direction shown) is perpendicular to the lifting direction. Thus, it can be seen that the lifting device can at least drive the weld detection mechanism 100 to move along the height direction of the wind turbine tower to detect the vertical weld.

[0049] As Figure 1 and Figure 2 shown, the weld detection mechanism 100 further includes a rotating mechanism 20. The rotating mechanism 20 is used to connect the first slide rail 10 and the detection assembly 30. Continuing to refer to Figure 1 and Figure 2 , the rotating mechanism 20 includes a connected mounting portion 21 and a main body portion 22. The mounting portion 21 is slidably connected to the first slide rail 10, and the main body portion 22 is connected to the detection assembly 30. The main body portion 22 is arranged to be able to rotate relative to the mounting portion 21 about a first preset rotation axis 23 to drive the detection assembly 30 to rotate relative to the first slide rail 10. The extension direction of the first preset rotation axis 23 ( Figure 1 The z - direction shown) is perpendicular to the extension direction of the first slide rail 10 ( Figure 1 The x - direction shown), and the extension direction of the wind turbine tower ( Figure 1 The y - direction shown).

[0050] As Figure 2 shown, the weld detection mechanism 100 includes a set of detection assemblies 30. Each set of detection assemblies 30 includes two detection probes 31. When multiple sets of detection assemblies 30 are provided, the arrangement direction of the multiple sets of detection assemblies 30 is perpendicular to the arrangement direction of the two detection probes 31 in each set of detection assemblies 30. The detection probe 31 can be, for example, a phased - array probe. When using a phased - array probe to detect a weld, only a linear scan parallel to the weld along the length direction of the weld is required to perform a full - volume detection of the welded joint, without the need to frequently move back and forth in all directions on both sides of the weld like an ordinary single probe. This scanning method can be completed by sliding a mechanical scanner equipped with an array probe along a precisely positioned track or by a manual method, enabling rapid detection with very high detection efficiency.

[0051] During the detection process, the main body portion 22 can rotate relative to the mounting portion 21 so that the two detection probes 31 are respectively arranged on both sides of the weld to improve the detection accuracy. Exemplarily, referring to Figure 2 , it shows that the main body portion 22 rotates to the first preset state, and the arrangement direction of the two detection probes 31 is perpendicular to the extension direction of the vertical weld of the wind turbine tower to detect the vertical weld. Referring to Figure 6 , it shows that the main body portion 22 rotates to the second preset state, and the arrangement direction of the two detection probes 31 is parallel to the extension direction of the vertical weld (i.e., perpendicular to the extension direction of the circumferential weld) to detect the circumferential weld of the wind turbine tower.

[0052] In the embodiments of the present disclosure, the detection assembly is arranged on the rotating mechanism, and the rotating mechanism drives the detection mechanism to rotate, so that the weld detection mechanism switches between the circumferential weld detection state and the longitudinal weld detection state. On the premise that the detection mechanism can detect both circumferential welds and longitudinal welds, the detection angle of the detection mechanism is accurate, improving the detection accuracy.

[0053] In an exemplary embodiment, as Figure 1 shown, the embodiments of the present disclosure provide a weld detection mechanism 100, including a first slide rail 10, a rotating mechanism 20, and at least one group of detection assemblies 30. The first slide rail 10 is used to be connected to a lifting device. The mounting part 21 of the rotating mechanism 20 is slidably connected to the first slide rail 10. The main body part 22 of the rotating mechanism 20 is arranged to be able to rotate relative to the mounting part 21 around a first preset rotation axis 23. The first preset rotation axis 23 is perpendicular to the extending direction of the first slide rail 10 and perpendicular to the extending direction of the wind power tower barrel. When the main body part 22 rotates to the first preset state, the arrangement direction of the two detection probes 31 of the detection assembly 30 is perpendicular to the extending direction of the longitudinal weld of the wind power tower barrel. When the main body part 22 rotates to the second preset state, the arrangement direction of the two detection probes 31 is parallel to the extending direction of the longitudinal weld to detect the circumferential weld of the wind power tower barrel.

[0054] In this embodiment, as Figure 5 shown, the mounting part 21 is rotatably connected to the first slider 11 through a second preset rotation axis 214. The second preset rotation axis 214 is perpendicular to the first preset rotation axis 23 and perpendicular to the arrangement direction of the two detection probes 31. It can be understood that when the mounting part 21 rotates to the second preset state, the weld detection mechanism 100 will be used to detect the circumferential weld of the wind power tower barrel. When the first slide rail 10 is a linear guide rail, the distances and angles between the detection assembly 30 and the wind power tower barrel are different when the detection assembly 30 moves to different positions, resulting in the detection direction of the detection assembly 30 not being perpendicular to the surface of the wind power tower barrel, affecting the detection accuracy. In this embodiment, by arranging the mounting part 21 to be rotatably connected to the first slider 11, and the second preset rotation axis 214 is parallel to the extending direction of the wind power tower barrel during circumferential weld detection, the detection direction of the detection assembly 30 is always perpendicular to the surface of the wind power tower barrel, ensuring the detection accuracy. In an example, referring to Figure 5 , two return springs 215 are further arranged between the mounting part 21 and the first slider 11. The two return springs 215 are respectively arranged on both sides of the second preset rotation axis 214.

[0055] In some alternative embodiments (not shown in the drawings), the mounting part and the first slide rail are connected through a spherical joint.

[0056] Among them, as Figure 5As shown, the mounting portion 21 of the rotating mechanism 20 includes a first mounting plate 211, a second mounting plate 212 and a first spring 213. The first mounting plate 211 is rotatably connected to the main body 22, the second mounting plate 212 is connected to the first slider 11, the second mounting plate 212 is slidably connected to the first mounting plate 211 through a guide column, and the sliding direction is parallel to the first preset rotating shaft 23. The first spring 213 is sleeved on the guide column, and one end of the first spring 213 abuts against the first mounting plate 211, and the other end abuts against the second mounting plate 212. By providing the first spring 213, the weld detection mechanism 100 is always abutted against the surface of the wind power tower, ensuring that the distance between the detection component 30 and the weld remains unchanged, thereby improving the detection accuracy.

[0057] Among them, Figure 5 As shown, the main body 22 of the rotating mechanism 20 is provided with a strip-shaped mounting hole 221, the extension direction of the strip-shaped mounting hole 221 is parallel to the arrangement direction of the two detection probes 31, and the detection probe 31 is installed in the strip-shaped mounting hole 221 through a fastener 222. By adjusting the fastening position of the fastener 222 between the strip-shaped mounting holes 221, the spacing between the two detection probes 31 can be adjusted. In one example, the spacing can be adjusted according to parameters such as the width of the weld to improve the detection accuracy. For example, when the weld of the wind power tower is wide, the spacing between the two detection probes 31 can be increased. For another example, when the weld is narrow, the spacing between the two detection probes 31 can be appropriately reduced.

[0058] Among them, Figure 2 As shown, the main body 22 is provided with at least one ball 223, and the ball 223 is connected to the main body 22 in a rolling manner. During the test, the ball 223 can abut against the surface of the wind turbine tower, thereby preventing the detection probe 31 from colliding with the wind turbine tower and ensuring that there is a preset distance between the detection probe 31 and the wind turbine tower. Figure 2 , exemplarily showing that four balls 223 are provided, which does not limit the technical solution of the present disclosure. In other optional implementations, one, two, three or more balls 223 may be provided.

[0059] Among them, Figure 2 As shown, the detection probe 31 is rotatably connected to the main body 22, and the rotation axis direction is perpendicular to the arrangement direction of the two probes and is also perpendicular to the first preset rotation axis 23. By adjusting the relative angle between the detection probe 31 and the main body 22, the detection direction of the detection probe 31 can be directed toward the weld, thereby improving the detection accuracy.

[0060] In some optional embodiments, reference Figure 2 and Figure 5, the detection probe 31 is also slidably connected to the main body 22. Exemplarily, a second guiding cylinder is provided between the detection probe 31 and the main body 22, and a second spring 224 is provided on the second guiding body. When the detection probe 31 moves towards the main body 22, the second spring 224 will be compressed. By providing the second guiding cylinder and the second spring 224, it is possible to prevent the protruding structure on the wind power tower barrel from colliding with the detection assembly 30.

[0061] Among them, as Figure 2 shown, the main body 22 is provided with a monitoring camera 40, and the monitoring camera 40 faces the detection probe 31. During the detection process, the working state of the detection probe 31 can be observed through the monitoring camera 40, such as the placement angle of the detection probe 31 (around the second preset rotation axis 214), the shape of the weld seam, etc.

[0062] Among them, as Figure 2 shown, the main body 22 is further provided with two 3D cameras 50. The arrangement directions of the two 3D cameras 50 are perpendicular to the arrangement direction of the two detection probes 31 and perpendicular to the first preset rotation axis 23. The 3D camera 50 is also called a line laser 3D camera 50. The 3D camera 50 is based on the principle of triangulation. By capturing the laser line information projected on the object surface by the laser generator through the image sensor, the surface contour information of the object is reconstructed. During the process of detecting the weld seam, adjusting the position of the detection probe 31 based on the detection result of the 3D camera 50 can make the detection probe 31 face the weld seam directly, ensuring the accuracy of the detection.

[0063] Among them, as Figures 1 to 4 shown, the weld seam detection mechanism 100 further includes a second slide rail 60 and a third slider 71.

[0064] Refer to Figure 2 and Figure 4 , the second slide rail 60 is provided on the first slider 11, and the second slide rail 60 extends along the axial direction of the first preset rotation axis 23 ( Figure 1 the z direction shown in

[0065] Refer to Figure 2 and Figure 4 , the third slide rail 70 is installed on the second slider 61 of the second slide rail 60, and the third slide rail 70 is along the direction perpendicular to the first slide rail 10 and the second slide rail 60 ( Figure 1It extends in the y direction shown in the figure, and the installation part 21 is arranged on the third slider 71 of the third slide rail 70. By providing the third slide rail 70, when the detection probe 31 performs circumferential seam detection but there is a position deviation, quick fine-tuning can be carried out through the third slide rail 70. Since there is no need for the lifting frame or the wall-climbing robot to operate, it has the characteristics of fast adjustment speed and high safety.

[0066] After considering the specification and the practice disclosed herein, those skilled in the art will readily conceive of other embodiments of the present application. The present application is intended to cover any variations, uses, or adaptations of the present application, which follow the general principles of the present application and include the common general knowledge or conventional technical means in the technical field not disclosed in the present application. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present application are pointed out by the following claims.

[0067] It should be understood that the present application is not limited to the precise structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present application is only limited by the appended claims.

Claims

1. A weld detection mechanism applied to a wind power tower, characterized in that: include: A first slide rail connected to the lifting device, wherein a first slider is provided on the first slide rail; A rotating mechanism, comprising a mounting portion and a main body, wherein the mounting portion is connected to the first slider, and the main body is configured to be rotatable relative to the mounting portion around a first preset rotating axis, wherein the first preset rotating axis is perpendicular to an extension direction of the first slide rail and to an extension direction of the wind turbine tower, and the extension direction of the wind turbine tower is perpendicular to an extension direction of the first slide rail; At least one set of detection components connected to the main body, the detection components including two detection probes; Among them, when the main body rotates to a first preset state, the arrangement direction of the two detection probes is perpendicular to the extension direction of the vertical seam of the wind turbine tower; when the main body rotates to a second preset state, the arrangement direction of the two detection probes is parallel to the extension direction of the vertical seam, so as to detect the annular seam of the wind turbine tower.

2. The weld detection mechanism according to claim 1, characterized in that: The mounting portion and the first sliding block are rotationally connected via a second preset rotating shaft, and the second preset rotating shaft is perpendicular to the first preset rotating shaft and perpendicular to the arrangement direction of the two detection probes.

3. The weld detection mechanism according to claim 1 or 2, characterized in that: The mounting portion comprises: A first mounting plate, rotatably connected to the main body; A second mounting plate is slidably connected to the first mounting plate, a sliding direction of which is parallel to the first preset rotating shaft, and is connected to the first sliding block; The first spring is arranged between the first mounting plate and the second mounting plate.

4. The weld detection mechanism according to claim 1, characterized in that: The main body is provided with a strip-shaped mounting hole, the extension direction of the strip-shaped mounting hole is parallel to the arrangement direction of the two detection probes, and the detection probe is mounted on the strip-shaped mounting hole through a fastener.

5. The weld detection mechanism according to claim 1, characterized in that: The main body is provided with at least one ball, and the ball is rollingly connected to the main body. When the ball is used to contact the wind turbine tower, there is a preset distance between the detection probe and the wind turbine tower.

6. The weld detection mechanism according to claim 2, characterized in that: The detection probe is rotatably connected to the main body, and the direction of the rotation axis is perpendicular to the arrangement direction of the two detection probes and is also perpendicular to the first preset rotation axis.

7. The weld detection mechanism according to claim 1, characterized in that: The main body is provided with a monitoring camera, and the monitoring camera faces the detection probe.

8. The weld detection mechanism according to claim 1, characterized in that: The main body is further provided with two 3D cameras, and the arrangement direction of the two 3D cameras is perpendicular to the arrangement direction of the two detection probes and to the axial direction of the first preset rotating shaft.

9. The weld detection mechanism according to claim 1, characterized in that: The detection probe comprises a phased array probe.

10. The weld detection mechanism according to claim 1, characterized in that: The weld detection mechanism also includes: A second slide rail is disposed on the first sliding block, and the second slide rail extends along the axial direction of the first preset rotating shaft; The third slide rail is arranged on the second slide block of the second slide rail, the third slide rail extends in a direction perpendicular to the first slide rail and the second slide rail, and the mounting portion is arranged on the third slide block of the third slide rail.

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