Magnetic nondestructive testing moving device

Abstract

The utility model relates to the technical field of welding seam detection equipment, and discloses a magnetic nondestructive testing mobile device, which comprises a mobile trolley, a magnetic flaw detection assembly and two cleaning assemblies, the magnetic flaw detection assembly is arranged at the top of the mobile trolley, and the magnetic flaw detection assembly comprises a magnetic spraying mechanism, a magnetizing mechanism and a detection monitoring mechanism, the two cleaning assemblies are arranged at the front end and the rear end of the moving trolley correspondingly. Through the cooperation of the two cleaning assemblies arranged at the front end and the rear end of the moving trolley and the magnetic flaw detection assembly, a workpiece to be detected is subjected to cleaning before flaw detection, magnetization, magnetic spraying, shooting and cleaning after flaw detection, and meanwhile, the problems of internal welding seam detection and cleaning are solved; the method can be applied to actual production of complex structural parts with a large number of internal weld joints such as bridge U ribs.

Description

Technical Field

[0001] This utility model relates to the technical field of weld inspection equipment, specifically to a magnetic non-destructive testing mobile device. Background Technology

[0002] Welds are ubiquitous in structures such as pressure vessels and bridge U-ribs, and are numerous, extremely long, sometimes even measured in kilometers. These welds, including those hidden within the structure, require non-destructive testing (NDT) to verify their quality. While manual inspection can perform some NDT on external welds, the workload remains extremely heavy. Furthermore, pressure vessels and bridge U-ribs contain numerous internal welds, which are virtually impossible to inspect manually and must be handled by automated mobile NDT platforms.

[0003] Magnetic particle testing is a non-destructive testing method. Its principle is based on the characteristic that when a magnetic flux passes through a magnetic rod, crack defects have the property of adsorbing and accumulating magnetic powder. It can detect crack defects on the surface of the weld and in the area 3-6 mm below the surface with high sensitivity.

[0004] Currently, there are very few mobile non-destructive testing platforms with magnetic flaw detection capabilities that have been put into actual production of complex structural components such as bridge U-ribs with a large number of internal welds, and there is no magnetic flaw detection mobile non-destructive testing platform that can simultaneously solve the problem of internal weld detection and cleaning. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the purpose of this utility model is to provide a magnetic non-destructive testing mobile device.

[0006] The magnetic non-destructive testing mobile device of this utility model includes:

[0007] Mobile cart;

[0008] A magnetic flaw detection assembly is disposed on the top of the mobile trolley. The magnetic flaw detection assembly includes a magnetic spraying mechanism, a magnetization mechanism, and a detection and monitoring mechanism. The magnetic spraying mechanism is used to spray magnetic powder liquid onto the weld of the workpiece to be inspected. The magnetization mechanism is used to magnetize the weld of the workpiece to be inspected. The detection and monitoring mechanism is used to capture and analyze the weld image of the workpiece to be inspected.

[0009] The cleaning assembly includes two components, which are respectively located at the front and rear ends of the mobile trolley. The cleaning assembly at the front end is used to clean the weld seam of the workpiece to be inspected before flaw detection, and the cleaning assembly at the rear end is used to clean the magnetic powder solution at the weld seam of the workpiece to be inspected after flaw detection.

[0010] Preferably, the magnetic spraying mechanism includes a magnetic powder liquid spraying pump disposed on the top of the mobile trolley, two spraying arms disposed on the left and right sides of the top of the mobile trolley, and two magnetic powder liquid nozzles rotatably connected to the two spraying arms at the ends away from the mobile trolley. One end of the two magnetic powder liquid nozzles is connected to the magnetic powder liquid spraying pump through a first conduit.

[0011] Preferably, the magnetic spraying mechanism further includes a baffle disposed on the side of the magnetic powder liquid nozzle, the baffle being close to the detection and monitoring mechanism.

[0012] Preferably, the magnetization mechanism includes an electromagnetic generator disposed on the top of the mobile trolley, two sets of magnetic guide arms disposed on the left and right sides of the mobile trolley, and two sets of magnetic guide wheels disposed on the ends of the two sets of magnetic guide arms away from the mobile trolley, with one end of each set of magnetic guide arms connected to the electromagnetic generator via a first wire.

[0013] Preferably, each group has two magnetic guide arms, which are respectively disposed on the top and side of the mobile trolley. The two magnetic guide arms are arranged perpendicular to each other. Each magnetic guide arm is provided with a guide groove. The mobile trolley is provided with a protrusion. The top of the protrusion is provided with a first threaded hole. The protrusion passes through the guide groove. The magnetic guide arm is fixed to the mobile trolley by a first screw passing through the first threaded hole.

[0014] Preferably, a magnetic shielding sheet is provided between the magnetic guide arm and the mobile trolley.

[0015] Preferably, the detection and monitoring mechanism includes a central controller disposed on the top of the mobile vehicle, two camera arms disposed on the left and right sides of the top of the mobile vehicle, and two detection cameras rotatably connected to the two camera arms at the ends away from the mobile vehicle. One end of the two camera arms is connected to the central controller via a second wire.

[0016] Preferably, the cleaning assembly includes a cleaning fluid spray pump disposed on the mobile trolley and two cleaning brushes disposed on the front or rear side of the mobile trolley, with one end of the two cleaning brushes connected to the cleaning fluid spray pump via a second conduit.

[0017] Preferably, the device further includes two positioning components disposed at the front and rear ends of the mobile trolley. Each positioning component includes two large swing arms that are rotatably disposed at the ends of the mobile trolley, two small swing arms that are disposed at one end of the two large swing arms, and two guide wheels that are disposed at the ends of the two small swing arms away from the corresponding large swing arms. The ends of the large swing arms are provided with insertion holes for the small swing arms to be inserted into. The relative positions between the large swing arms and the small swing arms are fixed by bolts.

[0018] Preferably, the mobile trolley includes a chassis, four wheels symmetrically arranged on the left and right sides of the chassis, and two mounting columns arranged at the front and rear ends of the chassis for mounting the large swing arm.

[0019] The magnetic non-destructive testing mobile device described in this utility model has the advantage that, through the cooperation between the two cleaning components and the magnetic flaw detection component set at the front and rear ends of the mobile trolley, the workpiece to be tested is cleaned before flaw detection, magnetized, magnetically sprayed, photographed, and cleaned after flaw detection. At the same time, it solves the problem of internal weld detection and cleaning, and can be applied to the actual production of complex structural components such as bridge U-ribs that have a large number of internal welds. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the magnetic non-destructive testing mobile device described in this utility model;

[0021] Figure 2 This is a utility model Figure 1 Enlarged view of point A in the middle;

[0022] Figure 3 This is a utility model Figure 1 Enlarged view of point B in the middle;

[0023] Figure 4 This is a schematic diagram of the mobile trolley structure described in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Mobile trolley, 101. Protrusion, 11. Chassis, 12. Walking wheels, 13. Mounting column;

[0026] 2. Magnetic flaw detection assembly; 21. Magnetic spraying mechanism; 22. Magnetization mechanism; 23. Detection and monitoring mechanism;

[0027] 211 Magnetic powder liquid spray pump, 212 spray arm, 213 Magnetic powder liquid nozzle, 214 baffle;

[0028] 221 Electromagnetic generator, 222 Magnetic guide arm, 2221 Guide groove, 2222 First screw, 2223 Magnetic shielding sheet; 223 Magnetic guide wheel;

[0029] 231 Central controller, 232 Camera arm, 233 Detection camera;

[0030] 3. Cleaning components; 31. Cleaning fluid spray pump; 32. Cleaning brush;

[0031] 4. Positioning components, 41. Large swing arm, 42. Small swing arm, 43. Guide wheel. Detailed Implementation

[0032] like Figures 1-4As shown, the magnetic nondestructive testing mobile device disclosed in this embodiment includes a mobile trolley 1, a magnetic flaw detection component 2, and two cleaning components 3. The magnetic flaw detection component 2 is located on the top of the mobile trolley 1 and includes a magnetic spraying mechanism 21, a magnetization mechanism 22, and a detection and monitoring mechanism 23. The magnetic spraying mechanism 21 sprays magnetic powder liquid onto the weld seam of the workpiece to be inspected; the magnetization mechanism 22 magnetizes the weld seam of the workpiece to be inspected; and the detection and monitoring mechanism 23 captures and analyzes images of the weld seam of the workpiece to be inspected. The two cleaning components 3 are respectively located at the front and rear ends of the mobile trolley 1. The cleaning component 3 at the front end is used for pre-flaw detection cleaning of the weld seam of the workpiece to be inspected, and the cleaning component 3 at the rear end is used for cleaning the magnetic powder liquid from the weld seam of the workpiece to be inspected after flaw detection.

[0033] In this embodiment of the magnetic non-destructive testing mobile device, during testing, the moving carriage 1 first moves to the designated position of the workpiece to be tested. During the movement, the front-end cleaning component pre-cleans the weld of the workpiece to be tested, removing impurities such as grease, rust, and coatings to ensure the clarity of magnetic powder adsorption and magnetic trace display. When the moving carriage 1 moves to the designated position, the working end of the magnetic flaw detection component 2 is aligned with the weld. The order of magnetic spraying and magnetization can be determined according to the testing method used. Generally, there are continuous and residual magnetization methods. The continuous method involves first magnetizing, and then applying magnetic powder during or immediately after magnetization. By applying magnetic powder under the action of an external magnetic field, the magnetic powder is adsorbed at the defect location using the immediate effect of the magnetic field, forming a magnetic trace. The residual magnetization method involves first magnetizing the weld, then cutting off the magnetic field, and then applying magnetic powder. The residual magnetism of the workpiece is used to adsorb the magnetic powder, forming a magnetic trace. This embodiment employs a continuous inspection method. First, the weld is magnetized by the magnetization mechanism 22, then magnetized by the magnetic spraying mechanism 21 to form magnetic traces. Afterward, the detection and monitoring mechanism 23 photographs the weld area and processes and analyzes the images to draw conclusions. Once the weld inspection at one location is completed, the moving carriage 1 moves to the next target position. Then, the cleaning assembly 2 at the rear cleans the inspected weld area, ensuring the workpiece to be inspected is clean and intact.

[0034] In this embodiment, the magnetic spraying mechanism 21 includes a magnetic powder liquid spraying pump 211 disposed on the top of the mobile trolley 1, two spraying arms 212 disposed on the left and right sides of the top of the mobile trolley 1, and two magnetic powder liquid nozzles 213 rotatably connected to the ends of the two spraying arms 212 away from the mobile trolley 1. One end of each magnetic powder liquid nozzle 213 is connected to the magnetic powder liquid spraying pump 211 through a first conduit. The magnetic powder liquid spraying pump 211 has a magnetic powder liquid storage tank containing magnetic powder liquid. The pump body guides the magnetic powder liquid in the storage tank through the first conduit to the magnetic powder liquid nozzles 213, which then spray it onto the weld seam of the workpiece to be inspected. The structure is simple and easy to implement. The magnetic spraying mechanism 21 also includes a baffle 214 disposed on the side of the magnetic powder liquid nozzle 213, which is close to the detection and monitoring mechanism 23. Baffle 214 is used to prevent splashing of magnetic powder liquid during the spraying process from contaminating the normal detection operation of the subsequent detection and monitoring mechanism 23. The baffle has a trapezoidal design to effectively prevent liquid overflow.

[0035] Please refer to Figure 1 and Figure 2 The magnetization mechanism 22 includes an electromagnetic generator 221 mounted on the top of the mobile carriage 1, two sets of magnetic guide arms 222 mounted on the left and right sides of the mobile carriage 1, and two sets of magnetic guide wheels 223 corresponding to the ends of the two sets of magnetic guide arms 222 away from the mobile carriage 1. One end of each set of magnetic guide arms 222 is connected to the electromagnetic generator 221 via a first wire. The magnetic guide wheels 223 are used to roll and transfer magnetic force from the magnetic guide arms 222 to the surface of the contacting workpiece, which is a necessary condition for magnetic flaw detection. Preferably, there are two magnetic guide arms 222 in each set, mounted on the top and side of the mobile carriage 1 respectively. The two magnetic guide arms 222 are perpendicular to each other. The magnetic guide arms 222 are provided with guide grooves 2221. The mobile carriage 1 is provided with protrusions 101. The top of the protrusions 101 is provided with a first threaded hole. The protrusions 101 pass through the guide grooves 2221. The magnetic guide arms 222 are fixed to the mobile carriage 1 by first screws 2222 passing through the first threaded holes. The protrusion 101 cooperates with the guide groove 2221 to adjust the extension of the magnetic arm 222, ensuring that the magnetic field can be smoothly guided to the workpiece to be inspected. After the extension of the magnetic arm 222 is adjusted, it is fixed by the first screw 2222. Specifically, the monitoring position of the detection camera 233 in the detection and monitoring mechanism 23 is the intersection of the planes formed by the two magnetic wheels 222 on the same side on the weld. Preferably, a magnetic shielding sheet 2223 is provided between the magnetic arm 222 and the moving carriage 1. The magnetic shielding sheet 2223 is used to isolate the magnetic force on the magnetic arm 222 from the moving carriage 1, thereby avoiding affecting the normal operation of other electrical control equipment on the moving carriage 1.

[0036] Preferably, the detection and monitoring mechanism 23 includes a central controller 231 disposed on the top of the mobile vehicle 1, two camera arms 232 disposed on the left and right sides of the top of the mobile vehicle 1, and two detection cameras 233 rotatably connected to the two camera arms 232 at the ends away from the mobile vehicle 1. One end of the two camera arms 232 is connected to the central controller 231 through a second wire.

[0037] The magnetic non-destructive testing mobile device of this embodiment also includes two positioning components 4 disposed at the front and rear ends of the mobile trolley 1. The positioning components 4 include two large swing arms 41 that are rotatably disposed at the ends of the mobile trolley 1, two small swing arms 42 that are correspondingly disposed at one end of the two large swing arms 41, and two guide wheels 43 that are correspondingly disposed at the ends of the two small swing arms 42 away from the corresponding large swing arms 41. The ends of the large swing arms 41 are provided with insertion holes for the small swing arms 42 to be inserted. The relative positions between the large swing arms 41 and the small swing arms 42 are fixed by bolts. Specifically, the cross-section of the large swing arms 41 is rectangular, which is consistent with the rectangular cross-section of the small swing arms 42. The ends of the large swing arms 41 are provided with rectangular channels, so that the small swing arms 42 can be installed in the rectangular channels of the large swing arms 41 and have telescopic movement function. The position is fixed by the small arm fastening nuts. The position and orientation of the large swing arm 41 are determined by the angle between it and the chassis 11 of the moving trolley 1. The end of the large swing arm 41 away from the guide wheel 43 is designed with a mounting hole, which can be installed on the mounting column 13 and has the function of rotating around the mounting column 13. Its angle and orientation are fixed by the large arm fastening nut.

[0038] Preferably, the mobile trolley 1 includes a chassis 11, four wheels 12 symmetrically arranged on the left and right sides of the chassis 11, and two mounting columns 13 arranged at the front and rear ends of the chassis 11 for mounting the large swing arm 41.

[0039] Please refer to Figure 1 and Figure 3The cleaning assembly 3 includes a cleaning fluid spray pump 31 mounted on the mobile trolley 1 and two cleaning brushes 32 mounted on the front or rear side of the mobile trolley 1. One end of each cleaning brush 32 is connected to the cleaning fluid spray pump 31 via a second conduit. The cleaning fluid spray pump 31 is equipped with a cleaning fluid storage tank. The pump body guides the cleaning fluid from the storage tank through the second conduit to the round handle of the cleaning brush 32. The cleaning brush 32 cleans the workpiece during the movement of the mobile trolley 1. Specifically, the round handle of the cleaning brush 32 is mounted on a side arm that is extended at one end of the guide wheel 43, allowing the guide wheel 43 to locate and precisely clean the weld surface to be cleaned. The cleaning brush head is designed with soft bristles made of nylon or other soft materials (not copper or wire brushes) to avoid creating defects such as scratches on the weld surface while cleaning it. The soft brush has three rectangular nozzles to deliver cleaning fluid to work with the brush head to clean the weld surface. Adjacent rectangular nozzles are separated by bristles, which allows for multiple cleanings of the weld surface to improve cleaning efficiency.

[0040] In summary, the magnetic non-destructive testing mobile device of this embodiment, through the cooperation between the two cleaning components 3 and the magnetic flaw detection component 2 set at the front and rear ends of the mobile trolley 1, performs pre-flaw detection cleaning, magnetic spraying, magnetic strengthening, imaging, and post-flaw detection cleaning operations on the workpiece to be inspected. At the same time, it solves the problem of internal weld detection and cleaning, and can be applied to the actual production of complex structural components with a large number of internal welds, such as bridge U-ribs.

[0041] In the description of this utility model, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this utility model.

[0042] For those skilled in the art, various other corresponding changes and modifications can be made based on the technical solutions and concepts described above, and all such changes and modifications should fall within the protection scope of the claims of this utility model.

Claims

1. A magnetically powered non-destructive testing mobile device, characterized by, Include: Mobile trolley (1); Magnetic flaw detection assembly (2), the magnetic flaw detection assembly (2) is arranged on the top of the mobile trolley (1), the magnetic flaw detection assembly (2) includes spray magnetic mechanism (21), magnetization mechanism (22) and detection monitoring mechanism (23), the spray magnetic mechanism (21) is used for spraying magnetic powder liquid to the weld of the workpiece to be detected, the magnetization mechanism (22) is used for magnetizing the weld of the workpiece to be detected, and the detection monitoring mechanism (23) is used for shooting and analyzing the weld image of the workpiece to be detected; Cleaning assembly (3), the cleaning assembly (3) is provided with two, two the cleaning assembly (3) is arranged on the front and rear ends of the mobile trolley (1), the cleaning assembly (3) located at the front end is used for cleaning before detection of the weld of the workpiece to be detected, and the cleaning assembly (3) located at the rear end is used for cleaning the magnetic powder liquid at the weld of the workpiece to be detected after detection.

2. The magnetic force non-destructive testing mobile device of claim 1, wherein, The spray magnetic mechanism (21) includes a magnetic powder liquid spray pump (211) arranged on the top of the mobile trolley (1), two liquid spray arms (212) arranged on the left and right sides of the top of the mobile trolley (1), and two magnetic powder liquid spray heads (213) correspondingly connected to the ends of the two liquid spray arms (212) away from the mobile trolley (1), one end of the two magnetic powder liquid spray heads (213) is communicated with the magnetic powder liquid spray pump (211) through a first conduit.

3. The magnetic force non-destructive testing mobile device of claim 2, wherein, The spray magnetic mechanism (21) further includes a baffle (214) arranged on the side of the magnetic powder liquid spray head (213), and the baffle (214) is close to the detection monitoring mechanism (23).

4. The magnetic force non-destructive testing mobile device of claim 2, wherein, The magnetization mechanism (22) includes an electromagnetic generator (221) arranged on the top of the mobile trolley (1), two groups of magnetic guide arms (222) arranged on the left and right sides of the mobile trolley (1), and two groups of magnetic guide wheels (223) correspondingly arranged on the ends of the two groups of magnetic guide arms (222) away from the mobile trolley (1), one end of the two groups of magnetic guide arms (222) is connected with the electromagnetic generator (221) through a first wire.

5. The magnetic NDT mobile device of claim 4, wherein, Each group of the magnetic guide arms (222) has two, which are arranged on the top side and the side of the mobile trolley (1), respectively, and the two magnetic guide arms (222) are arranged perpendicular to each other, the magnetic guide arm (222) is provided with a guide groove (2221), the mobile trolley (1) is provided with a protrusion (101), the top of the protrusion (101) is provided with a first threaded hole, the protrusion (101) passes through the guide groove (2221), and the magnetic guide arm (222) is fixed on the mobile trolley (1) by a first screw (2222) passing through the first threaded hole.

6. The magnetic force non-destructive testing mobile device of claim 5, wherein, A magnetic separation sheet (2223) is arranged between the magnetic guide arm (222) and the mobile trolley (1).

7. The magnetic force non-destructive testing mobile device of claim 4, wherein, The detection monitoring mechanism (23) comprises a central controller (231) arranged on the top of the mobile trolley (1), two camera arms (232) arranged on the left and right sides of the top of the mobile trolley (1), and two detection cameras (233) rotatably connected to the ends of the two camera arms (232) away from the mobile trolley (1), and one end of the two camera arms (232) is connected with the central controller (231) through a second wire.

8. The magnetic force non-destructive testing mobile device of claim 1, wherein, The cleaning assembly (3) comprises a cleaning liquid spraying pump (31) arranged on the mobile trolley (1) and two cleaning brushes (32) arranged on the front or rear side of the mobile trolley (1), and one end of the two cleaning brushes (32) is communicated with the cleaning liquid spraying pump (31) through a second conduit.

9. The magnetic NDT mobile device of any of claims 1-8, wherein, It also comprises two positioning assemblies (4) arranged on the front and rear ends of the mobile trolley (1), the positioning assembly (4) comprises two large swing arms (41) cross-rotatably arranged on the end of the mobile trolley (1), two small swing arms (42) correspondingly arranged on one end of the two large swing arms (41), and two guide wheels (43) correspondingly arranged on the end of the two small swing arms (42) away from the corresponding large swing arm (41), the end of the large swing arm (41) is provided with a socket for inserting the small swing arm (42), and the relative position between the large swing arm (41) and the small swing arm (42) is fixed by bolts.

10. The magnetic force non-destructive testing mobile device of claim 9, wherein, The mobile trolley (1) comprises a chassis (11), four walking wheels (12) symmetrically arranged on the left and right sides of the chassis (11), and two mounting columns (13) arranged on the front and rear ends of the chassis (11) for mounting the large swing arm (41).

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