A positioning device for a non-destructive testing system

Abstract

This utility model discloses a positioning device for a non-destructive testing system, belonging to the field of workpiece non-destructive testing technology, addressing the problems of high difficulty and poor accuracy in mechanical calibration of workpiece non-destructive testing systems. The positioning device of this utility model includes a first laser lamp, the beam plane of which coincides with the scanning plane of the scanning rotating body; a first positioning target; the first laser lamp is used to position the positioning plane on the first positioning target; the two ends of the first positioning target can be respectively connected to the ends of a main conveyor platform and an auxiliary conveyor platform, so that the workpiece transmission direction of the main conveyor platform and the auxiliary conveyor platform is perpendicular to the positioning plane of the first positioning target, and there is a gap between the main conveyor platform and the auxiliary conveyor platform and the scanning plane. This positioning device improves the accuracy and reliability of scanning and testing results.

Description

Technical Field

[0001] This utility model belongs to the field of non-destructive testing technology for workpieces, and relates to a positioning device for a non-destructive testing system. Background Technology

[0002] For non-destructive testing systems for workpiece defects, mechanical calibration of the scanning equipment and workpiece conveying platform is required during use to ensure that the workpiece remains within the scanning field of view as it moves on the conveying platform, and to prevent collisions with rotating components. In addition, when inspecting high-density workpieces, the conveying platform must not be located within the scanning field of view to ensure high-quality scanning images are obtained.

[0003] Currently, conventional non-destructive testing (NDT) systems for workpieces typically use scanning equipment with apertures within 1.2m and conveyor platforms within 3m, resulting in relatively small overall dimensions. Therefore, the mechanical calibration process is relatively simple, usually relying on visual inspection, which requires a high level of operator experience, and the accuracy results after system calibration are unstable. However, for NDT systems specifically designed for detecting internal defects in large-diameter, high-density workpieces—for example, a NDT system with a scanning equipment rotation profile of Ф8m, an aperture of 1.7m, and a workpiece conveyor platform length of 8m—these subsystems are separate. If the aforementioned simple mechanical calibration method is still used, incorrect geometric positioning may lead to workpiece positional deviations during scanning, decreased image quality, and even damage to the equipment and workpiece during the inspection process. Utility Model Content

[0004] Based on the above analysis, the present invention aims to provide a positioning device for a non-destructive testing system to solve the problems of high difficulty and poor accuracy in mechanical calibration of workpiece non-destructive testing systems.

[0005] The purpose of this utility model is mainly achieved through the following technical solutions.

[0006] This utility model provides a positioning device for a non-destructive testing system, including a laser positioning lamp and a positioning target; the laser positioning lamp includes a first laser lamp, the beam plane of which coincides with the scanning plane of the scanning rotating body; the positioning target includes a first positioning target; the first laser lamp is used to position the positioning plane on the first positioning target; the two ends of the first positioning target can be respectively connected to the ends of the main conveying platform and the auxiliary conveying platform so that the workpiece transmission direction of the main conveying platform and the auxiliary conveying platform is perpendicular to the positioning plane of the first positioning target, and there is a gap between the main conveying platform and the auxiliary conveying platform and the scanning plane.

[0007] Furthermore, the laser positioning light also includes a second laser light, the beam plane of which is parallel to the workpiece support surface of the main conveying platform; the positioning target also includes a second positioning target, which is fixed on the auxiliary conveying platform; the auxiliary conveying platform achieves horizontal calibration of the workpiece support plane by calibrating the second positioning target with the second laser light.

[0008] Furthermore, it also includes platform end connectors, with two platform end connectors fixed to one end of the main conveyor platform and one end of the auxiliary conveyor platform, respectively; the platform end connectors include positioning pins and a first assembly plane, with the two positioning pins located on the first assembly plane.

[0009] Furthermore, the first positioning target includes connecting pin holes and a second assembly plane. The connecting pin holes are located at both ends of the second assembly plane and match the positioning pins. The second assembly plane is used to fit and position itself against the first assembly plane.

[0010] Furthermore, the center line connecting the connecting pin holes at the same end is parallel to the positioning plane of the first positioning target; the center line connecting the two positioning pins is perpendicular to the workpiece conveying direction of the workpiece conveying platform.

[0011] Furthermore, the positioning target also includes a third positioning target, the positioning plane of which is parallel to the workpiece support surface of the main conveyor platform. The third positioning target is used to calibrate the beam plane of the second laser lamp.

[0012] Furthermore, both the second laser light and the third positioning target are fixed on the main conveyor platform, with the second laser light located on the same side of the second and third positioning targets.

[0013] Furthermore, the height of the positioning plane of the third positioning target relative to the workpiece support plane of the main conveying platform is equal to the height of the positioning plane of the second positioning target relative to the workpiece support plane of the auxiliary conveying platform.

[0014] Furthermore, four of each of the second and third positioning targets are set up and arranged in a rectangular pattern.

[0015] Furthermore, the laser positioning light also includes a third laser light and a fourth laser light; the beam planes of the third laser light and the fourth laser light coincide with the horizontal plane and the vertical plane where the rotation center line of the scanning rotating body is located, respectively.

[0016] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0017] 1. The positioning device of the non-destructive testing system of this utility model, by setting a first laser lamp and a first positioning target, can, on the one hand, keep the workpiece transmission direction of the main conveying platform and the auxiliary conveying platform consistent, so that when the workpiece to be tested is transferred between the two conveying platforms, the transmission direction will not change due to the split structure of the two workpiece conveying platforms; on the other hand, it can also position the opposite ends of the main conveying platform and the auxiliary conveying platform on both sides of the scanning plane, ensuring that the workpiece conveying platform avoids the scanning area, especially for the detection of internal defects of large-size, high-density workpieces, thus improving the accuracy and reliability of the scanning detection results.

[0018] 2. The positioning device of the non-destructive testing system of this utility model, by setting a second laser lamp, a second positioning target and a third positioning target, can realize the horizontal calibration of the auxiliary conveying platform and make the workpiece support planes of the two workpiece conveying platforms at the same level, thus ensuring the stability of the workpiece during the transfer between the two conveying platforms and improving the accuracy of the scanning results.

[0019] 3. The positioning device of the non-destructive testing system of this utility model, by setting matching first and second assembly planes, enables the main conveyor platform and the auxiliary conveyor platform to be at the same height; by setting matching positioning pins and connecting pin holes, it enables the opposite ends of the main conveyor platform and the auxiliary conveyor platform to be positioned on both sides of the scanning plane with a gap, thereby achieving avoidance of the main conveyor platform and the auxiliary conveyor platform from the scanning area. At the same time, the connection of the two sets of pins and holes also prevents the auxiliary conveyor platform from twisting.

[0020] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall positional structure of the positioning device of the non-destructive testing system according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic diagram of the position structure of the positioning target and the second laser lamp in an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of the platform end connector according to an embodiment of the present utility model;

[0024] Figure 4 This is a schematic diagram of the structure of the first positioning target according to an embodiment of the present utility model;

[0025] Figure 5 This is a schematic diagram of the positional structure of some laser positioning lights in an embodiment of this utility model.

[0026] Figure label:

[0027] 1-Laser positioning light; 11-First laser light; 111-First beam plane; 12-Second laser light; 121-Second beam plane; 13-Third laser light; 131-Third beam plane; 14-Fourth laser light; 141-Fourth beam plane; 2-Positioning target; 21-First positioning target; 211-Connecting pin hole; 212-First assembly plane; 22-Second positioning target; 23-Third positioning target; 24-Fourth positioning target; 3-Platform end connector; 31-Positioning pin; 32-First assembly plane; 4-Calibration target; 5-Workpiece conveying platform; 51-Main conveying platform; 52-Auxiliary conveying platform; 6-Scanning rotating frame; 7-Level. Detailed Implementation

[0028] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0029] Example 1

[0030] This embodiment discloses a positioning device for a non-destructive testing system, such as... Figure 1 and Figure 2 As shown, it includes a laser positioning lamp 1 and a positioning target 2; the laser positioning lamp 1 includes a first laser lamp 11, the beam plane of the first laser lamp 11 coincides with the scanning plane of the scanning rotating body; the positioning target 2 includes a first positioning target 21; the first laser lamp 11 is used to position the positioning plane on the first positioning target 21; the two ends of the first positioning target 21 can be connected to the ends of the main conveying platform 51 and the auxiliary conveying platform 52 respectively, so that the workpiece transmission direction of the main conveying platform 51 and the auxiliary conveying platform 52 is perpendicular to the positioning plane of the first positioning target 21, and there is a gap between the main conveying platform 51 and the auxiliary conveying platform 52 and the scanning plane.

[0031] When positioning the end of the workpiece conveying platform 5 using the device of this embodiment, firstly, one end of the first positioning target 21 is connected to the platform end connector 3 of the main conveying platform 51, so that the positioning plane of the first positioning target 21 is perpendicular to the workpiece conveying direction of the main conveying platform 51. Adjust the position of the main conveying platform 51 so that the positioning plane of the first positioning target 21 coincides with the first beam plane 111 of the first laser lamp 11. Then, connect the other end of the first positioning target 21 to the platform end connector 3 of the auxiliary conveying platform 52, so that the ends of the main conveying platform 51 and the auxiliary conveying platform 52 are respectively positioned on both sides of the scanning plane with a gap. At the same time, the workpiece conveying direction of the main conveying platform 51 and the auxiliary conveying platform 52 is perpendicular to the positioning plane of the first positioning target 21.

[0032] The positioning device of the non-destructive testing system in this embodiment, by setting a first laser lamp 11 and a first positioning target 21, can, on the one hand, keep the workpiece transmission direction of the main conveying platform 51 and the auxiliary conveying platform 52 consistent, so that when the workpiece to be tested is transferred between the two conveying platforms, the transmission direction will not change due to the split structure of the two workpiece conveying platforms; on the other hand, it can also position the opposite ends of the main conveying platform 51 and the auxiliary conveying platform 52 on both sides of the scanning plane, ensuring that the workpiece conveying platform avoids the scanning area, especially for the detection of internal defects of large-size, high-density workpieces, thus improving the accuracy and reliability of the scanning detection results.

[0033] It should be noted that the laser positioning light 1 is a laser light including a linear laser emitter, and the positioning target 2 has a positioning plane that matches the laser positioning light 1. The laser beam emitted by the linear laser emitter of the laser positioning light 1 can be significantly elongated in one direction, thereby generating an extremely thin fan-shaped beam plane in the air. This beam plane itself is invisible, but when it illuminates the surface of an object, it projects a narrow straight spot of light. The position of the beam plane of the laser positioning light 1 can also be adjusted. The positioning plane of the positioning target 2 is used to coincide with the beam plane of the laser positioning light 1 to achieve position positioning. The positioning plane of the positioning target 2 is formed by at least two calibration lines located on the surface of the positioning target 2. Since the positioning target 2 is fixed on the workpiece conveying platform 5, adjusting the position of the workpiece conveying platform 5 so that the beam plane of the calibrated laser positioning light 1 coincides with the corresponding positioning plane of the positioning target 2 completes the positioning of the workpiece conveying platform 5 at the corresponding position. After the calibration and positioning of the non-destructive testing system is completed, the laser positioning light 1 and the positioning target 2 need to be removed from the testing system.

[0034] To enable the first positioning target 21 to accurately position the two opposite ends of the main conveyor platform 51 and the auxiliary conveyor platform 52, the positioning device in this embodiment also includes a platform end connector 3. For example... Figure 3As shown, the two platform end connectors 3 are respectively fixed to one end of the main conveying platform 51 and one end of the auxiliary conveying platform 52; the platform end connectors 3 include positioning pins 31 and a first assembly plane 32, and the two positioning pins 31 are located on the first assembly plane 32.

[0035] To match the platform end connector 3, such as Figure 4 As shown, the first positioning target 21 is provided with multiple positioning lines, connecting pin holes 211, and a first assembly plane 32. The multiple positioning lines are all located on the positioning plane of the first positioning target 21. For example, the first positioning target 21 is a cuboid with a trapezoidal cross-section, and the positioning lines are located on the edges of the cross-section. The second assembly plane 212 is perpendicular to the positioning plane and is used to fit and position itself against the first assembly plane 32. For example, the second assembly plane 212 is located at the bottom of the first positioning target 21. The connecting pin holes 211 are formed on the second assembly plane 212 and match the positioning pins 31. Two sets of connecting pin holes 211 are symmetrically arranged on both sides of the plane containing the positioning lines.

[0036] The positioning device in this embodiment, by setting matching first assembly plane 32 and second assembly plane 212, enables the main conveyor platform 51 and the auxiliary conveyor platform 52 to have the same height; by setting matching positioning pins 31 and connecting pin holes 211, it enables the opposite ends of the main conveyor platform 51 and the auxiliary conveyor platform 52 to be positioned on both sides of the scanning plane with a gap, thereby achieving the avoidance of the main conveyor platform 51 and the auxiliary conveyor platform 52 from the scanning area. At the same time, the connection of the two sets of pins and holes can also prevent the auxiliary conveyor platform from swaying.

[0037] To ensure that the workpiece conveying directions of the main conveyor platform 51 and the auxiliary conveyor platform 52 are consistent, such as... Figure 3 and Figure 4 As shown, the center line connecting the connecting pin holes 211 at the same end of the first positioning target 21 is parallel to the positioning plane of the first positioning target 21; the center line connecting the two positioning pins 31 is perpendicular to the workpiece conveying direction of the workpiece conveying platform 5, so that after the first positioning target 21 is connected to the two platform end connectors 3 through the pin holes, the workpiece conveying directions of the main conveying platform 51 and the auxiliary conveying platform 52 are both positioned perpendicular to the scanning plane, and the center lines of the main conveying platform 51 and the auxiliary conveying platform 52 are aligned with each other.

[0038] Example 2

[0039] The difference between the positioning device of the non-destructive testing system in this embodiment and that in embodiment 1 is that the laser positioning light 1 further includes a second laser light 12, the positioning target 2 further includes a second positioning target 22, and the auxiliary conveying platform 52 achieves horizontal calibration by calibrating the second positioning target 22 with the second laser light 12.

[0040] like Figure 1 As shown, the second beam plane 121 of the second laser lamp 12 is parallel to the workpiece support surface of the main conveyor platform 51; as Figure 2 As shown, the positioning target 2 also includes a second positioning target 22, which is fixed on the auxiliary conveying platform 52. The positioning plane of the second positioning target 22 is parallel to the workpiece support plane of the auxiliary conveying platform 52. The upper end of the second positioning target 22 is provided with multiple positioning lines, all located on the positioning plane of the second positioning target 22. Preferably, four second positioning targets 22 are provided and arranged in a rectangular pattern. By adjusting the height of multiple parts of the auxiliary conveying platform 52, the multiple positioning lines of the four second positioning targets 22 are made to coincide with the second beam plane 121, thereby calibrating the workpiece support plane of the auxiliary conveying platform 52 to be parallel to the workpiece support plane of the main conveying platform 52.

[0041] To ensure that the second beam plane 121 of the second laser lamp 12 is parallel to the workpiece support plane of the main conveying platform 52, the positioning target 2 also includes a third positioning target 23 for calibrating the beam plane of the second laser lamp 12. The positioning plane of the third positioning target 23 is parallel to the workpiece support plane of the main conveying platform 51. The third positioning target 23 has multiple positioning lines located on its positioning plane, and all of these positioning lines are parallel to the workpiece support surface of the main conveying platform 51.

[0042] Preferred, such as Figure 2 As shown, the second laser light 12 and the third positioning target 23 are both fixed on the main conveying platform 51, with the second laser light 12 located on the same side of the second positioning target 22 and the third positioning target 23. Preferably, four third positioning targets 23 are provided and arranged in a rectangular pattern. In practice, the second laser light 12 is first adjusted so that the second beam plane 121 coincides with the positioning lines of the four third positioning targets 23, and then the levelness of the auxiliary conveying platform 52 is calibrated through the second beam plane 121.

[0043] To ensure that the workpiece support plane of the auxiliary conveyor platform 52 is at the same level as the workpiece support plane of the main conveyor platform 52, the height of the positioning plane of the third positioning target 23 relative to the workpiece support plane of the main conveyor platform 51 is equal to the height of the positioning plane of the second positioning target 22 relative to the workpiece support plane of the auxiliary conveyor platform 52. Preferably, the second positioning target 22 and the third positioning target 23 have the same structure.

[0044] To achieve the positional positioning between the main transport platform 51 and the scanning rotary body, such as Figure 5As shown, the laser positioning light 1 in this embodiment also includes a third laser light 13 and a fourth laser light 14. The second laser light 12, the third laser light 13 and the fourth laser light 14 are all mounted on the scanning rotary frame 6. The third beam plane 131 of the third laser light 13 coincides with the horizontal plane where the rotation center line of the scanning rotary body is located, and is used to adjust the workpiece support plane of the main conveying platform 61 to be horizontal by calibrating the third positioning target 23. The fourth beam plane 141 of the fourth laser lamp 14 coincides with the vertical plane containing the rotation center line of the scanning rotary body. Correspondingly, the positioning target 2 also includes a fourth positioning target 24. The positioning plane of the fourth positioning target 24 is perpendicular to the workpiece support plane of the main conveying platform 51 and coincides with the center line of the workpiece support plane of the main conveying platform 51 along the workpiece conveying direction. Therefore, the fourth laser lamp 14 and the fourth positioning target 24 can position the center line of the workpiece support plane of the main conveying platform 51 along the workpiece conveying direction at a position that coincides with the vertical plane containing the rotation center line of the scanning rotary body. This prevents the movement direction of the detected workpiece from deviating during the transmission process or even interfering with the components of the scanning rotary body, ensuring that the detected workpiece can pass smoothly through the scanning rotary body.

[0045] like Figure 1 As shown, to ensure that the beam plane of the laser positioning lamp 1 is in a precise position, a corresponding calibration target 4 can be set on the scanning rotating frame 6 to calibrate the beam plane of the laser positioning lamp 1. In addition, a level 7 is also installed at the upper end of the scanning rotating frame 6 to ensure that the scanning plane of the scanning rotating body is in a position perpendicular to the horizontal plane before the laser positioning lamp 1 is calibrated.

[0046] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning device for a non-destructive testing system, characterized in that, Includes a laser positioning light (1) and a positioning target (2); The laser positioning light (1) includes a first laser light (11), the beam plane of the first laser light (11) coincides with the scanning plane of the scanning rotating body; The positioning target (2) includes a first positioning target (21); the first laser light (11) is used to position the positioning plane on the first positioning target (21); The two ends of the first positioning target (21) can be connected to the ends of the main conveying platform (51) and the auxiliary conveying platform (52) respectively, so that the workpiece transmission direction of the main conveying platform (51) and the auxiliary conveying platform (52) is perpendicular to the positioning plane of the first positioning target (21), and there is a gap between the main conveying platform (51) and the auxiliary conveying platform (52) and the scanning plane.

2. The positioning device of a non-destructive testing system according to claim 1, characterized in that The laser positioning light (1) further includes a second laser light (12), the beam plane of which is parallel to the workpiece support surface of the main conveying platform (51); the positioning target (2) further includes a second positioning target (22), which is fixed on the auxiliary conveying platform (52); the auxiliary conveying platform (52) achieves horizontal calibration of the workpiece support plane by calibrating the second positioning target (22) with the second laser light (12).

3. The positioning device of a non-destructive testing system of claim 1, wherein, It also includes platform end connectors (3), two of which are fixed to one end of the main conveying platform (51) and one end of the auxiliary conveying platform (52), respectively; the platform end connectors (3) include positioning pins (31) and a first assembly plane (32), and the two positioning pins (31) are located on the first assembly plane (32).

4. The positioning device of a non-destructive testing system according to claim 3, characterized in that The first positioning target (21) includes a connecting pin hole (211) and a second assembly plane (212). The connecting pin hole (211) is opened at both ends of the second assembly plane (212) and matches the positioning pin (31). The second assembly plane (212) is used to fit and position itself against the first assembly plane (32).

5. The positioning device of a non-destructive testing system according to claim 4, characterized in that The center line connecting the connecting pin holes (211) at the same end is parallel to the positioning plane of the first positioning target (21); the center line connecting the two positioning pins (31) is perpendicular to the workpiece conveying direction of the workpiece conveying platform (5).

6. The positioning device of a non-destructive testing system of claim 2, wherein, The positioning target (2) also includes a third positioning target (23), the positioning plane of which is parallel to the workpiece support surface of the main conveying platform (51), and the third positioning target (23) is used to calibrate the beam plane of the second laser lamp (12).

7. The positioning device of a non-destructive testing system according to claim 6, characterized in that The second laser light (12) and the third positioning target (23) are both fixed on the main conveying platform (51), and the second laser light (12) is located on the same side of the second positioning target (22) and the third positioning target (23).

8. The positioning device of a non-destructive testing system according to claim 7, characterized in that The height of the positioning plane of the third positioning target (23) relative to the workpiece support plane of the main conveying platform (51) is equal to the height of the positioning plane of the second positioning target (22) relative to the workpiece support plane of the auxiliary conveying platform (52).

9. The positioning device of a non-destructive testing system according to claim 8, characterized in that The second positioning target (22) and the third positioning target (23) are both provided in fours and are arranged in a rectangular shape.

10. The positioning device for a nondestructive testing system according to any one of claims 1 to 9, characterized in that, The laser positioning light (1) also includes a third laser light (13) and a fourth laser light (14); the beam planes of the third laser light (13) and the fourth laser light (14) coincide with the horizontal plane and the vertical plane where the rotation center line of the scanning rotating body is located, respectively.

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