A weld inspection device for steel welding

By designing a weld inspection device that integrates a phased array ultrasonic flaw detector, a laser scanner, and an industrial camera, the problems of low efficiency and poor accuracy in traditional weld inspection are solved. This device enables efficient and accurate detection and marking of internal weld defects, ensuring the quality and safety of welded workpieces.

CN224945976UActive Publication Date: 2026-11-06FIRST INSTITUTE OF OCEANOGRAPHY MNR
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Patent Information

Application Number
CN202521999346.7
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-09-17
Publication Date
2026-11-06
Estimated Expiration
2035-09-17

AI Technical Summary

Technical Problem

Traditional weld inspection methods rely on manual operation, which is inefficient, subjective, and unable to explore the internal condition of the weld, resulting in poor inspection results.

Method used

Design a weld inspection device that includes a phased array ultrasonic flaw detector, a laser scanner, and an industrial camera. The device is stabilized on the steel by an electromagnetic chuck and combined with an automated control system to achieve efficient and accurate inspection and marking of welds.

Benefits of technology

It improves the automation and accuracy of weld inspection, enabling efficient detection and marking of internal and surface defects in welds, ensuring the quality and safety of welded workpieces.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model relates to the field of weld inspection technology, specifically a weld inspection device for steel welding. It includes steel with a weld seam fixed on it. A vehicle body is mounted on top of the steel, and several moving wheels are mounted on the bottom of the vehicle body. Each moving wheel has an electromagnetic chuck on its exterior. A marking box is fixed on top of the vehicle body, and a proximity rod is also mounted on top of the vehicle body. A positioning plate is mounted on the bottom of the proximity rod, and a phased array ultrasonic flaw detector, a laser scanner, and an industrial camera are fixed on the bottom of the positioning plate. A marking head is mounted on the front end of the positioning plate. This utility model uses a reversing main motor to drive the adapter rod to rotate, thereby adapting to steel with different curvatures and increasing the overall applicability of the device. Simultaneously, a reversing auxiliary motor can drive the connecting head to rotate, ensuring that the moving wheels are always in close contact with the steel, thus guaranteeing the stability of the entire device during movement.
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Description

Technical Field

[0001] This utility model belongs to the field of weld inspection technology, specifically a weld inspection device for steel welding. Background Technology

[0002] In modern industry, steel welding is widely used in critical structures such as bridges, pressure vessels, and steel pipe towers, and the quality of the welds directly affects the safety of the project.

[0003] However, traditional weld inspection methods rely on manual operation, which has drawbacks such as low efficiency, strong subjectivity, and limited inspection range. At the same time, most existing inspection methods rely on visual inspection, which can only detect obvious surface defects and cannot explore the internal condition of the weld, resulting in poor inspection results. In order to solve the above problems, this utility model designs a weld inspection device for steel welding. Utility Model Content

[0004] In view of the above situation and to overcome the defects of the prior art, this utility model provides a weld inspection device for steel welding, which effectively solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a weld inspection device for steel welding, comprising steel, on which a weld is fixed, a vehicle body on the top of the steel, a plurality of adapter rods on the bottom of the vehicle body, a roller positioning plate at the bottom of each adapter rod, a movable wheel rotatably connected inside each roller positioning plate, an electromagnetic chuck on the outside of each roller positioning plate, a marking box fixed on the top of the vehicle body, a stabilizing bar also fixed on the top of the vehicle body, a proximity rod fixed at the bottom of the stabilizing bar, a positioning plate at the bottom of the proximity rod, a phased array ultrasonic flaw detector fixed at the bottom of the positioning plate, a phased array probe fixed at the bottom of the phased array ultrasonic flaw detector, a laser scanner fixed at the left end of the phased array ultrasonic flaw detector, an industrial camera fixed at the left end of the laser scanner, a marking head at the front end of the positioning plate, a marking head controller fixed at the top of the marking head, and a connecting pipe fixed at the top of the marking head controller.

[0006] Preferably, a controller is fixed on the top of the vehicle body, a power supply is fixed on the right end of the controller, a mobile camera is also fixed on the top of the vehicle body, a preliminary inspection camera is fixed on the bottom of the vehicle body, a marking and re-inspection camera is fixed on the bottom of the front end of the vehicle body, and two reversing main motors are fixed on the front end of the vehicle body. Each reversing main motor is rotatably connected to the adapter rod at its rear end via a rotating shaft.

[0007] Preferably, each adapter rod has a connector rotatably connected to its bottom, a reversing auxiliary motor fixed to its outer end, each reversing auxiliary motor rotatably connected to the connector on its inner side, each connector fixedly connected to the roller positioning plate at its bottom, a moving motor fixedly connected to the inner side of each roller positioning plate at its front end, each moving motor rotatably connected to the moving wheel at its outer end, a connecting plate fixedly connected to the outer side of each roller positioning plate, and each connecting plate fixedly connected to the electromagnetic chuck at its bottom.

[0008] Preferably, a pump body is also fixed on the top of the vehicle body. The pump body is fixedly connected to the marking box through a delivery pipe. A solenoid valve is fixed to the right end of the pump body. The right end of the delivery pipe is fixedly connected to the connecting pipe. The rear end of the marking head is fixedly connected to the moving rod through a positioning head.

[0009] Preferably, the left end of the moving rod is fixedly connected to the positioning plate via a connecting strip, a detection strip is rotatably connected to the bottom of the proximity rod, a detection motor is fixed to the rear end of the proximity rod, the detection motor is rotatably connected to the detection strip at its front end, and the detection strip is fixedly connected to the positioning plate at its bottom.

[0010] Compared with the prior art, the beneficial effects of this utility model are: This invention utilizes a main reversing motor to drive the adapter rod to rotate, thus adapting to steel with different curvatures and expanding the overall applicability of the device. Simultaneously, a secondary reversing motor drives the connector to rotate, ensuring the moving wheels remain in close contact with the steel, guaranteeing stability during movement. Furthermore, the adapter rod is telescopic, allowing the connector to rise and fall, which in turn raises and lowers the moving wheels, further ensuring stability during movement. The device's phased-array ultrasonic flaw detector efficiently and accurately detects and locates internal or surface defects in workpieces, ensuring the quality and safety of welded, cast, and pipe products. The electromagnetic chuck generates attraction between the device and the steel, enabling the entire device to move on steel at different angles, ensuring overall stability.

[0011] This invention uses a pump and a solenoid valve to deliver the marking liquid inside the marking box to the marking head through a connecting pipe. The marking head controller then controls the marking head to spray the marking liquid, thereby marking the location of weld defects. Furthermore, the device can move the positioning head by extending and retracting the moving rod, which in turn moves the marking head, ensuring the accuracy of the marking. At the same time, the marking process can be monitored by an industrial camera.

[0012] This invention utilizes a telescopic rod to raise and lower the positioning plate, and a detection motor to rotate the detection strip. This allows the positioning plate to be raised, lowered, and reversed, ensuring the accuracy of the phased array ultrasonic flaw detector's scanning. Simultaneously, the phased array probe is in close contact with the weld seam, further guaranteeing the accuracy of the detection and thus ensuring the detection effect. Attached Figure Description

[0013] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0014] In the attached diagram: Figure 1 This is a schematic diagram of the overall design of this utility model; Figure 2 This is a schematic diagram of the vehicle body of this utility model; Figure 3 This is a schematic diagram of the bottom of the adapter rod of this utility model; Figure 4 This is a schematic diagram of the top of the vehicle body of this utility model; Figure 5 This is a schematic diagram of the bottom of the stabilizing strip of this utility model; Figure 6 This is a schematic diagram of the bottom of the detection strip of this utility model; Figure 7 This is a schematic diagram of the bottom of the positioning plate of this utility model; Figure 8 This is a schematic diagram of the rear end of the vehicle body of this utility model.

[0015] In the diagram: 1-Steel; 2-Vehicle body; 3-Adapter rod; 4-Marking box; 5-Stabilizing bar; 6-Moving rod; 101-Weld; 201-Controller; 202-Power supply; 203-Moving camera; 204-Initial inspection camera; 205-Marking re-inspection camera; 301-Main reversing motor; 302-Auxiliary reversing motor; 303-Connector; 304-Moving wheel; 305-Connecting plate; 306-Electromagnetic chuck; 307-Moving motor ; 308-Roller positioning plate; 401-Pump body; 402-Solenoid valve; 403-Delivery pipe; 404-Connecting pipe; 405-Marker head controller; 406-Marker head; 501-Proximity rod; 502-Positioning plate; 503-Detection motor; 504-Detection strip; 505-Phase array ultrasonic flaw detector; 506-Laser scanner; 507-Industrial camera; 508-Phase array probe; 601-Positioning head; 602-Connecting strip. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0017] Example 1, by Figures 1-2 , Figure 4 , Figures 7-8The present invention includes a steel material 1, on which a weld 101 is fixed. A vehicle body 2, made of alloy material, is mounted on the top of the steel material 1. The vehicle body 2 supports the marking box 4. Several adapter rods 3 are provided at the bottom of the vehicle body 2. These adapter rods 3 are telescopic, thereby driving the connector 303 to rise and fall. Each adapter rod 3 has a roller positioning plate 308 at its bottom, made of alloy material, for positioning the moving wheel 304. A moving wheel 304, made of rubber material, is rotatably connected inside each roller positioning plate 308. Made of a material, the movable wheels 304 facilitate the movement of the entire device on the steel 1. Each roller positioning plate 308 is equipped with an electromagnetic chuck 306 on its exterior. The electromagnetic chuck 306 can generate an attractive force with the steel 1, thereby allowing the entire device to move on the steel 1 at different angles, thus ensuring the stability of the entire device. A marking box 4 is fixed to the top of the vehicle body 2. The marking box 4 is used to hold the required marking liquid. A stabilizing bar 5 is also fixed to the top of the vehicle body 2. The stabilizing bar 5 is made of alloy material and is used to support the proximity rod 501. The proximity rod 501 is fixed to the bottom of the stabilizing bar 5. The proximity rod 501 can... The telescopic mechanism allows the positioning plate 502 to rise and fall. The bottom of the proximity rod 501 is equipped with the positioning plate 502, which is made of alloy material. The positioning plate 502 is used to position the phased array ultrasonic flaw detector 505. The phased array ultrasonic flaw detector 505 is fixed to the bottom of the positioning plate 502, and a phased array probe 508 is fixed to the bottom of the phased array ultrasonic flaw detector 505. The phased array ultrasonic flaw detector 505 can efficiently and accurately detect and locate internal or surface defects in workpieces, ensuring the quality and safety of welded, cast, and pipe workpieces. A laser scanner is fixed to the left end of the phased array ultrasonic flaw detector 505. The laser scanner 506 can perform inspection work by scanning the weld 101. An industrial camera 507 is fixed to the left end of the laser scanner 506. The industrial camera 507 is used to inspect the weld 101. A marking head 406 is provided at the front end of the positioning plate 502. The marking head 406 is used to spray marking liquid. A marking head controller 405 is fixed to the top of the marking head 406. The marking head controller 405 is used to control the operation of the marking head 406. A connecting pipe 404 is fixed to the top of the marking head controller 405. The connecting pipe 404 is retractable, thereby facilitating the movement of the positioning plate 502.

[0018] Example 2, based on Example 1, combined with... Figure 3 , Figures 5-6As shown, a controller 201 is fixed to the top of the vehicle body 2, which controls the entire device. A power supply 202 is fixed to the right end of the controller 201, providing the necessary power to the entire device. A mobile camera 203 is also fixed to the top of the vehicle body 2, which monitors the movement of the vehicle body 2. A preliminary inspection camera 204 is fixed to the bottom of the vehicle body 2, which performs preliminary inspections of the weld 101, facilitating subsequent inspections and saving resources. A marking and re-inspection camera 205 is fixed to the bottom front of the vehicle body 2, which monitors the marking status of the marking head 406. The front of the vehicle body 2 is also fixed with... Two reversing main motors 301 drive the adapter rod 3 to rotate, thereby adapting to steel materials 1 with different curvatures and improving the overall usability of the device. Each reversing main motor 301 is rotatably connected to the adapter rod 3 at its rear end via a rotating shaft. A connector 303, made of alloy material, is rotatably connected to the bottom of each adapter rod 3. The connector 303 is used to position the roller positioning plate 308. A reversing auxiliary motor 302 is fixed to the outer end of each adapter rod 3. The reversing auxiliary motor 302 drives the connector 303 to rotate, ensuring that the moving wheel 304 remains in close contact with the steel material 1, thus guaranteeing the stability of the entire device during movement. 302 is rotatably connected to the connector 303 on its inner side. Each connector 303 is fixedly connected to the roller positioning plate 308 at its bottom. A moving motor 307 is fixedly fixed to the inner side of each roller positioning plate 308 at the front end. Each moving motor 307 is rotatably connected to the moving wheel 304 at its outer end. A connecting plate 305 is fixedly fixed to the outer side of each roller positioning plate 308. The connecting plate 305 is made of alloy material and is used to position the electromagnetic chuck 306. Each connecting plate 305 is fixedly connected to the electromagnetic chuck 306 at its bottom. A pump body 401 is also fixedly fixed to the top of the vehicle body 2. The pump body 401 is fixedly connected to the marking box 4 through a delivery pipe 403. A solenoid valve 402 is fixed to the right end of the pump body 401. The pump body 401 and the solenoid valve 402 cooperate to transport the marking liquid inside the marking tank 4 to the marking head 406 through the connecting pipe 404. The right end of the delivery pipe 403 is fixedly connected to the connecting pipe 404. The rear end of the marking head 406 is fixedly connected to the moving rod 6 through the positioning head 601. The left end of the moving rod 6 is fixedly connected to the positioning plate 502 through the connecting strip 602. The connecting strip 602 is made of alloy material. A detection strip 504 is rotatably connected to the bottom of the proximity rod 501. The detection strip 504 is made of alloy material and is used to position the positioning plate 502. A detection motor 503 is fixed to the rear end of the proximity rod 501.The detection motor 503 can drive the detection strip 504 to rotate. The detection motor 503 is rotatably connected to the detection strip 504 at its front end, and the detection strip 504 is fixedly connected to the positioning plate 502 at its bottom. When using this device, the operator places the entire device on the steel 1. At this time, the controller 201 controls the main reversing motor 301 to work, thereby driving the adapter rod 3 to rotate, so that the entire device can adapt to steel 1 with different curvatures. Furthermore, the controller 201 controls the adapter rod 3 to extend and retract, thereby causing the roller positioning plate 308 to rise and fall, so that each of the moving wheels 304 is in close contact with the steel 1. Furthermore, the controller 201 controls the auxiliary reversing motor 302 to work, thereby driving the connector 303 to rotate, thereby driving the roller positioning plate 308 to rotate, thus causing the moving wheels 304 to rise and fall. 04 is in close contact with the steel 1. Furthermore, the controller 201 controls the electromagnetic chuck 306 to operate, thereby generating an attractive force between the steel 1 and the electromagnetic chuck 306, ensuring the stability of the entire device during movement. Furthermore, the controller 201 controls the two 407s to work together, thereby driving the moving wheels 304 to rotate, allowing the entire device to move and change direction simultaneously, thus improving the automation level of the entire device. Furthermore, the controller 201 can monitor the movement process of the entire device through the moving camera 203. Furthermore, when the initial inspection camera 204 detects a defect in the weld 101... The controller 201 controls the entire device to continue moving, thereby moving the positioning plate 502 to this position. Further, the controller 201 controls the extension of the proximity rod 501, thereby causing the positioning plate 502 to descend. Further, the controller 201 controls the industrial camera 507, the laser scanner 506, and the phased array ultrasonic flaw detector 505 to work together to detect defects in the weld 101. Furthermore, because the phased array probe 508 can be closely attached to the weld 101, flaw detection is convenient, allowing for the detection of the internal condition of the weld 101, thus ensuring detection accuracy. Finally, the controller 201 controls the detection motor 50... 3. The operation of the device drives the detection strip 504 to rotate, thereby enabling multi-range detection. After confirming the defect location, the controller 201 controls the extension and retraction of the moving rod 6, thereby moving the marking head 406. Furthermore, the controller 201 controls the pump body 401 and the solenoid valve 402 to cooperate, thereby transporting the marking liquid inside the marking box 4 to the marking head 406 through the connecting pipe 404. Further, the controller 201 controls the marking head controller 405 to operate, thereby causing the marking head 406 to spray out the marking liquid, thus completing the marking work. At this time, the industrial camera 507 can monitor the marking status.

[0019] The working process of this utility model is as follows: When using this device, the operator places the entire device on the steel 1. At this time, the controller 201 controls the main reversing motor 301 to work, thereby driving the adapter rod 3 to rotate, so that the entire device can adapt to the steel 1 with different curvatures. Further, the controller 201 controls the extension and retraction of the adapter rod 3, thereby causing the roller positioning plate 308 to rise and fall, so that each of the moving wheels 304 is in close contact with the steel 1. Further, the controller 201 controls the auxiliary reversing motor 302 to work, thereby driving the connector 303 to rotate, thereby driving the roller positioning plate 308 to rotate. This ensures that the moving wheel 304 is in close contact with the steel 1. Furthermore, the controller 201 controls the electromagnetic chuck 306 to operate, generating an attractive force between the steel 1 and the electromagnetic chuck 306, thus ensuring the stability of the entire device during movement. The controller 201 further controls the two chucks 407 to work together, driving the moving wheel 304 to rotate, allowing the entire device to move and change direction simultaneously, thereby improving the automation level of the entire device. Furthermore, the controller 201 can monitor the movement process of the entire device through the moving camera 203. Additionally, when the initial inspection camera 204 detects the weld 10... When a defect is found, the controller 201 controls the entire device to continue moving, thereby moving the positioning plate 502 to this location. Further, the controller 201 controls the extension of the proximity rod 501, thereby causing the positioning plate 502 to descend. Further, the controller 201 controls the industrial camera 507, the laser scanner 506, and the phased array ultrasonic flaw detector 505 to work together to detect defects in the weld 101. Furthermore, since the phased array probe 508 can be closely attached to the weld 101, flaw detection is convenient, allowing for the detection of the internal condition of the weld 101, thus ensuring detection accuracy. Further, the controller 201 controls the detection... When machine 503 operates, it drives the detection strip 504 to rotate, thereby enabling multi-range detection. After confirming the defect location, controller 201 controls the extension and retraction of the moving rod 6, thereby moving the marking head 406. Furthermore, controller 201 controls the pump body 401 and the solenoid valve 402 to cooperate, thereby transporting the marking liquid inside the marking box 4 to the marking head 406 through the connecting pipe 404. Further, controller 201 controls the marking head controller 405 to operate, thereby causing the marking head 406 to spray out the marking liquid, thus completing the marking work. At this time, the industrial camera 507 can monitor the marking status.

[0020] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0021] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A weld inspection device for steel welding, characterized in that: Includes steel (1), on which welds (101) are fixed, a vehicle body (2) is provided on the top of the steel (1), and a number of adapter rods (3) are provided on the bottom of the vehicle body (2). Each adapter rod (3) is provided with a roller positioning plate (308) at its bottom. Each roller positioning plate (308) is rotatably connected to a moving wheel (304) inside, and an electromagnetic chuck (306) is provided on the outside of each roller positioning plate (308). A marking box (4) is fixed on the top of the vehicle body (2), and a stabilizing bar (5) is also fixed on the top of the vehicle body (2). A proximity rod (501) is fixed at the bottom of the stabilizing bar (5). 501) A positioning plate (502) is provided at the bottom. A phased array ultrasonic flaw detector (505) is fixed at the bottom of the positioning plate (502). A phased array probe (508) is fixed at the bottom of the phased array ultrasonic flaw detector (505). A laser scanner (506) is fixed at the left end of the phased array ultrasonic flaw detector (505). An industrial camera (507) is fixed at the left end of the laser scanner (506). A marking head (406) is provided at the front end of the positioning plate (502). A marking head controller (405) is fixed at the top of the marking head (406). A connecting pipe (404) is fixed at the top of the marking head controller (405).

2. The weld inspection device for steel welding according to claim 1, characterized in that: A controller (201) is fixed on the top of the vehicle body (2), a power supply (202) is fixed on the right end of the controller (201), a mobile camera (203) is also fixed on the top of the vehicle body (2), a preliminary inspection camera (204) is fixed on the bottom of the vehicle body (2), a marking re-inspection camera (205) is fixed on the bottom of the front end of the vehicle body (2), and two reversing main motors (301) are fixed on the front end of the vehicle body (2). Each reversing main motor (301) is rotatably connected to the adapter rod (3) at its rear end via a rotating shaft.

3. The weld inspection device for steel welding according to claim 2, characterized in that: Each adapter rod (3) has a connector (303) rotatably connected to its bottom. Each adapter rod (3) has a reversing auxiliary motor (302) fixed at its outer end. Each reversing auxiliary motor (302) is rotatably connected to the connector (303) on its inner side. Each connector (303) is fixedly connected to the roller positioning plate (308) at its bottom. Each roller positioning plate (308) at its front end has a moving motor (307) fixed on its inner side. Each moving motor (307) is rotatably connected to the moving wheel (304) at its outer end. Each roller positioning plate (308) has a connecting plate (305) fixed on its outer side. Each connecting plate (305) is fixedly connected to the electromagnetic chuck (306) at its bottom.

4. The weld inspection device for steel welding according to claim 2, characterized in that: A pump body (401) is also fixed on the top of the vehicle body (2). The pump body (401) is fixedly connected to the marking box (4) through the delivery pipe (403). A solenoid valve (402) is fixed on the right end of the pump body (401). The right end of the delivery pipe (403) is fixedly connected to the connecting pipe (404). The rear end of the marking head (406) is fixedly connected to the moving rod (6) through the positioning head (601).

5. The weld inspection device for steel welding according to claim 4, characterized in that: The left end of the moving rod (6) is fixedly connected to the positioning plate (502) via a connecting strip (602). The bottom of the proximity rod (501) is rotatably connected to a detection strip (504). The rear end of the proximity rod (501) is fixedly connected to a detection motor (503). The detection motor (503) is rotatably connected to the detection strip (504) at its front end. The detection strip (504) is fixedly connected to the positioning plate (502) at its bottom.