Welding seam change detection device for steel structure

Abstract

The invention discloses a welding seam change detection device for a steel structure, and relates to the technical field of welding seam detection, the welding seam change detection device comprises a detection platform, a magnetic powder box is arranged in the middle of the upper end of the detection platform, four corners of the upper end of the detection platform are respectively provided with a group of stand columns, and the upper ends of the four groups of stand columns are provided with a group of top plates; fixing frame plates are arranged on the two sides of the lower end of the top plate correspondingly, the side walls of the two fixing frame plates are each provided with a screw rod, a connecting ring is arranged between the ends of the two screw rods, a first motor is arranged on the outer wall of one fixing frame plate, and the first motor is connected with the ends of the corresponding screw rod. The outer walls of the two sets of lead screws are each provided with a set of moving blocks. According to the welding seam change detection device for the steel structure, the position and the shape of the welding seam of the steel structure can be displayed through adsorption of the electromagnet and the magnetic suspension, and people can detect the welding seam of the steel structure more conveniently.

Description

Technical Field

[0001] The present invention relates to the technical field of weld detection, and particularly relates to a weld change detection device for steel structures. Background Art

[0002] A structure mainly made of steel is one of the main types of building structures. The characteristics of steel are high strength, light self-weight, good overall rigidity, and strong deformation ability. Therefore, it is particularly suitable for building large-span, ultra-high, and super-heavy buildings; the material has good homogeneity and isotropy, belongs to an ideal elastic body, and most conforms to the basic assumptions of general engineering mechanics; the material has good plasticity and toughness, can have large deformations, and can well withstand dynamic loads; the construction period is short; its industrialization degree is high, and it can carry out specialized production with a high degree of mechanization. In the future, high-strength steel should be studied for steel structures to greatly increase its yield point strength; in addition, new types of steel sections should be rolled, such as H-shaped steel (also known as wide flange steel) and T-shaped steel, as well as profiled steel sheets, etc. to meet the needs of large-span structures and super high-rise buildings.

[0003] When the existing steel structure weld detection device is in use, it is usually not convenient to directly observe the position of the weld, resulting in trouble for people to judge the position and size of the weld, which brings certain adverse effects to the process of steel structure weld detection. To solve the deficiencies of the existing technology, we propose a weld change detection device for steel structures. Summary of the Invention

[0004] The main purpose of the present invention is to provide a weld change detection device for steel structures, which can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A weld change detection device for steel structures, comprising a detection platform. In the middle of the upper end of the detection platform, a magnetic powder box is provided. At the four corners of the upper end of the detection platform, a group of columns are provided. At the upper ends of the four groups of columns, a group of top plates are provided. On both sides of the lower end of the top plate, fixed frame plates are provided. On the side walls of the two groups of fixed frame plates, a group of lead screws are provided. Between the ends of the two groups of lead screws, a connecting ring is provided. On the outer wall of one group of fixed frame plates, a first motor is provided. The first motor is connected to the end of one group of lead screws. On the outer walls of the two groups of lead screws, a group of moving blocks are provided. Between the upper ends of the two groups of moving blocks and the lower end of the top plate, sliding grooves are provided. At the lower ends of the two groups of sliding grooves, first connecting plates are provided. Below the top plate, a detection frame is provided. At the upper end of the detection frame, a connecting frame is provided. At the upper end of the connecting frame, two second connecting plates are provided. Between the two second connecting plates and the two first connecting plates respectively, a group of rotating connecting rods are provided. In the middle of the upper end of the detection frame, an electromagnet is provided. In the middle of the interior of the electromagnet, an iron core is provided. A coil is wound around the outer wall of the iron core. On both sides of the upper end of the electromagnet, a group of wires are respectively provided. The two ends of the coil are respectively connected to the lower ends of the two wires. On the upper end of the top plate, a battery is provided. The upper ends of the two wires are connected to the battery. At both ends of the iron core, a group of contact heads are provided. The two contact heads are inserted into the interior of the detection frame.

[0006] Preferably, between the two groups of lead screws and the side walls of the two groups of fixed frame plates, rotating interfaces are provided. The threads of the two groups of lead screws are in reverse. The two groups of lead screws are fixedly connected through the provided connecting ring.

[0007] Preferably, the two groups of lead screws are respectively rotatably connected to the side walls of the fixed frame plates through the provided rotating interfaces. Between the two groups of sliding grooves and the lead screws respectively, threaded holes are provided. The two groups of sliding grooves are respectively threadedly connected to the lead screws through the provided threaded holes. The upper end of the moving block is slidably connected to the lower end of the top plate through the provided sliding groove.

[0008] Preferably, at both ends of the two groups of rotating connecting rods, rotating interfaces are respectively provided between the two groups of first connecting plates and the two groups of second connecting plates. At both ends of the two groups of rotating connecting rods, they are respectively rotatably connected to the two groups of first connecting plates and the two groups of second connecting plates through the provided rotating interfaces. The connecting frame and the detection frame are both made of non-metallic materials. The iron core and the contact heads are both made of iron materials. The detection frame is directly above the magnetic powder box. The interior of the magnetic powder box is filled with magnetic suspension liquid.

[0009] Preferably, a set of mounting seats are provided on both sides of the magnetic powder box at the upper end of the detection platform. A set of movable frames are provided in the middle of the two sets of mounting seats. Cameras are provided in the middle of the front ends of the two sets of movable frames. Second motors are provided on the outer walls of the two sets of mounting seats. The two second motors are respectively connected to the side walls of the two sets of movable frames. A display screen is also provided on the front side at the upper end of the detection platform.

[0010] Preferably, a rotating interface is provided between the side wall of the movable frame and the inner wall of the mounting seat. The side wall of the movable frame is rotationally connected to the side wall of the mounting seat through the provided rotating interface. The camera is electrically connected to the display screen.

[0011] Preferably, two sets of positioning clamping plates are provided in the middle of the interior of the detection frame. A set of threaded rods are provided in the middle of the front and rear side walls of the detection frame. The front ends of the two sets of coils are respectively connected to the middle of the rear end of a set of positioning clamping plates. Handles are provided at the rear ends of the two sets of threaded rods. Two sets of telescopic rods are provided between the two sides of the rear ends of the two sets of positioning clamping plates and the inner wall of the detection frame.

[0012] Preferably, a threaded hole is provided between the threaded rod and the side wall of the detection frame. The threaded rod is threadedly connected to the side wall of the detection frame through the provided threaded hole. A rotating interface is provided between the end of the threaded rod and the positioning clamping plate. The threaded rod is rotationally connected to the positioning clamping plate through the provided rotating interface. The positioning clamping plate and the threaded rod are both made of non-metallic materials.

[0013] Preferably, four sets of support legs are provided at the lower end of the detection platform.

[0014] Compared with the prior art, the present invention has the following beneficial effects: In the present invention, the provided magnetic powder box, detection frame, and electromagnet can, through the magnetic attraction of magnetic powder, clearly display the welds of the steel structure at the lower end of the detection frame. At the positions with welds, there will be no magnetic powder adsorption. Therefore, people can directly observe the position, shape, and size of the welds, facilitating the process of detecting the welds of the steel structure. The provided battery and wire can control the magnetism of the electromagnet, generating magnetism when powered on and disappearing when powered off. The two sets of contact heads provided can make the electromagnet contact the steel structure inside the detection frame, making the steel structure generate magnetism and capable of adsorbing the magnetic suspension liquid. In the present invention, the provided lead screw, moving block, and rotating connecting rod can control the up and down movement of the detection frame, enabling the detection frame to automatically move up and down. When the lower end of the detection frame approaches the magnetic powder box, the magnetic suspension liquid inside the magnetic powder box will be adsorbed by the lower end of the detection frame, showing the shape of the steel structure. When the detection frame rises, it can be conveniently observed. The provided threaded rod and positioning clamping plate can conveniently position the steel structure inside the detection frame. In the present invention, the provided camera and display screen facilitate people's observation of the weld seam. The camera will take pictures of the bottom of the detection frame and then transmit the captured images to the display screen for display. In this way, people do not need to observe the lower part of the detection frame. They can directly observe the images on the display screen to know the situation of the weld seam, making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the movable structure of the detection frame of the present invention; Figure 3 is a schematic diagram of the overall structure of the detection frame of the present invention; Figure 4 is a schematic diagram of the coil structure of the present invention; Figure 5 is a schematic diagram of the connection structure of the positioning clamping plate of the present invention; Figure 6 is a schematic diagram of the camera structure of the present invention; In the figure: 1, detection platform; 2, column; 3, top plate; 4, battery; 5, fixed frame plate; 6, first motor; 7, detection frame; 8, magnetic powder box; 9, mounting seat; 10, display screen; 11, support leg; 12, lead screw; 13, connecting ring; 14, moving block; 15, sliding groove; 16, first connecting plate; 17, connecting frame; 18, second connecting plate; 19, rotating connecting rod; 20, electromagnet; 21, wire; 22, iron core; 23, contact head; 24, threaded rod; 25, handle; 26, positioning clamping plate; 27, coil; 28, telescopic rod; 29, movable frame; 30, camera; 31, second motor. DETAILED DESCRIPTION OF THE INVENTION

[0016] In order to make the technical means, creative features, achieved purposes and functions of the present invention easy to understand, the present invention will be further described below in conjunction with specific embodiments.

[0017] Such as Figures 1 - 6As shown in the figure, the detection platform 1 provides a platform for steel structure detection. In the middle of the upper end of the detection platform 1, there is a magnetic powder box 8, which is used to contain magnetic suspension liquid. At the four corners of the upper end of the detection platform 1, there is a set of columns 2. At the upper ends of the four sets of columns 2, there is a set of top plates 3. The columns 2 are used to support the top plate 3. On both sides of the lower end of the top plate 3, there are fixed frame plates 5. On the side walls of the two sets of fixed frame plates 5, there is a set of lead screws 12. There is a rotating interface between the lead screw 12 and the side wall of the fixed frame plate 5. The lead screw 12 is rotatably connected to the fixed frame plate 5 through the set rotating interface. Between the ends of the two sets of lead screws 12, there is a connecting ring 13. The threads on the outer walls of the two sets of lead screws 12 are reverse. The two sets of lead screws 12 are fixedly connected through the set connecting ring 13. On the outer wall of one set of fixed frame plates 5, there is a first motor 6. The first motor 6 is connected to the end of one set of lead screws 12. The first motor 6 is used to drive the lead screw 12 to rotate. On the outer walls of the two sets of lead screws 12, there is a set of moving blocks 14. There is a threaded hole between the lead screw 12 and the moving block 14. The lead screw 12 passes through the threaded hole in the middle of the moving block 14 and is threadedly connected to the moving block 14. Between the upper ends of the two sets of moving blocks 14 and the lower end of the top plate 3, there are sliding grooves 15. The moving block 14 is slidably connected to the lower end of the top plate 3 through the set sliding groove 15. At the lower ends of the two sets of sliding grooves 15, there is a first connecting plate 16. Below the top plate 3, there is a detection frame 7. The inside of the detection frame 7 is used to fix the steel structure. The steel structure is subjected to weld detection in the middle of the detection frame 7. At the upper end of the detection frame 7, there is a connecting frame 17. The connecting frame 17 is fixed to the upper end of the detection frame 7. At the upper end of the connecting frame 17, there are two sets of second connecting plates 18. Between the two sets of second connecting plates 18 and the two sets of first connecting plates 16 respectively, there is a set of rotating connecting rods 19. There are rotating interfaces between the two ends of the rotating connecting rod 19 and the first connecting plate 16 and the second connecting plate 18 respectively. The two ends of the rotating connecting rod 19 are rotatably connected to the first connecting plate 16 and the second connecting plate 18 respectively through the set rotating interfaces. When the moving block 14 moves on the outer wall of the lead screw 12, the rotating connecting rod 19 will rotate synchronously and reversely between the first connecting plate 16 and the connecting frame 17, so that the detection frame 7 rises or falls. In the middle of the upper end of the detection frame 7, there is an electromagnet 20. When the electromagnet 20 is energized, it can generate magnetic force. In the middle of the inside of the electromagnet 20, there is an iron core 22. The outer wall of the iron core 22 is wound with a coil 27. When the coil 27 is energized, magnetic force will be generated at both ends of the iron core 22. On both sides of the upper end of the electromagnet 20, there is a set of wires 21 respectively. The two ends of the coil 27 are respectively connected to the lower ends of the two sets of wires 21. On the upper end of the top plate 3, there is a battery 4. The upper ends of the two sets of wires 21 are connected to the battery 4. The battery 4 supplies power to the coil 27 inside the electromagnet 20 through the wires 21, so that the electromagnet 20 generates magnetic force. At both ends of the iron core 22, there is a set of contact heads 23 respectively. The two sets of contact heads 23 are inserted into the inside of the detection frame 7. The electromagnet 20 is used to contact the steel structure inside the detection frame 7, so that the steel structure generates magnetic force.

[0018] As shown Figures 1 - 6 in the figure, on the upper end of the detection platform 1, a set of mounting seats 9 are arranged on both sides of the magnetic powder box 8. A set of movable frames 29 are arranged in the middle of the two sets of mounting seats 9 for installing the movable frames 29. A rotating interface is arranged between the outer wall of the movable frame 29 and the inner wall of the mounting seat 9. The movable frame 29 can rotate in the middle of the mounting seat 9 to adjust the angle. In the middle of the front ends of the two sets of movable frames 29, cameras 30 are arranged. The cameras 30 are used to capture the images at the lower end of the detection frame 7. On the outer walls of the two sets of mounting seats 9, second motors 31 are arranged. The two second motors 31 are respectively connected to the side walls of the two sets of movable frames 29. The second motors 31 are connected to the side walls of the movable frames 29 to drive the movable frames 29 to rotate. On the front side of the upper end of the detection platform 1, a display screen 10 is also arranged. The cameras 30 are electrically connected to the display screen 10. The images captured by the cameras 30 will be displayed on the display screen 10 for people to observe conveniently.

[0019] As shown Figures 1 - 6 in the figure, two sets of positioning clamping plates 26 are arranged in the middle of the detection frame 7. The positioning clamping plates 26 can move in the middle of the detection frame 7 to fix the steel structure. In the middle of the front and rear side walls of the detection frame 7, a set of threaded rods 24 are arranged. The front ends of the two sets of coils 27 are respectively connected to the middle of the rear end of a set of positioning clamping plates 26. Threaded holes are arranged between the threaded rods 24 and the side walls of the detection frame 7. The threaded rods 24 are threadedly connected to the side walls of the detection frame 7 through the arranged threaded holes. A rotating interface is arranged between the end heads of the threaded rods 24 and the positioning clamping plates 26. The end heads of the threaded rods 24 are rotationally connected to the positioning clamping plates 26 through the arranged rotating interfaces. On the rear ends of the two sets of threaded rods 24, handles 25 are arranged. The handles 25 facilitate people to rotate the threaded rods 24. On both sides of the rear ends of the two sets of positioning clamping plates 26 and the inner walls of the detection frame 7, two sets of telescopic rods 28 are arranged. The telescopic rods 28 can telescopically move to limit the positioning clamping plates 26. When the threaded rods 24 are rotated, the threaded rods 24 will move back and forth in the middle of the side walls of the detection frame 7, thereby driving the positioning clamping plates 26 to move inside the detection frame 7. Four sets of support legs 11 are arranged at the lower end of the detection platform 1. The support legs 11 are used to support the detection platform 1.

[0020] It should be noted that the present invention is a weld change detection device for steel structures. When in use, the steel structure is placed inside the detection frame 7. The handles 25 on both sides of the detection frame 7 are rotated to drive the threaded rod 24 to rotate. The threaded rod 24 will push the positioning clamping plate 26 to move in the middle inside the detection frame 7 to fix the steel structure. The first motor 6 is started to drive the two lead screws 12 to rotate. The two moving blocks 14 will move synchronously and reversely on the outer wall of the lead screws 12, causing the two rotating connecting rods 19 to rotate between the first connecting plate 16 and the second connecting plate 18, and further causing the detection frame 7 to move downward to approach the magnetic powder box 8. The battery 4 supplies current to the coil 27 inside the electromagnet 20 through the wire 21, causing magnetic forces to be generated at both ends of the iron core 22. The two ends of the iron core 22 are in contact with the steel structure inside the detection frame 7 through the contact heads 23, making the steel structure have magnetic force. The magnetic suspension liquid inside the magnetic powder box 8 will be adsorbed on the lower end of the detection frame 7, showing the weld shape of the steel structure at the lower end of the detection frame 7. Then the first motor 6 is started again to raise the detection frame 7. The second motor 31 is started to drive the movable frame 29 to rotate and adjust the angle of the camera 30 to take a picture of the lower end of the detection frame 7. The picture taken is transmitted to the display screen 10 for display. People can then observe the weld shape shown by the magnetic suspension liquid at the lower end of the detection frame 7 through the display screen 10.

[0021] The above has shown and described the basic principles, main features and advantages of the present invention. Those skilled in the art of this industry should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A weld change detection device for a steel structure, comprising a detection platform (1), characterized in that: A magnetic powder box (8) is arranged in the middle of the upper end of the detection platform (1), a group of columns (2) are arranged at the four corners of the upper end of the detection platform (1), a group of top plates (3) are arranged at the upper ends of the four groups of columns (2), fixed frame plates (5) are arranged on both sides of the lower end of the top plates (3), the side walls of the two groups of fixed frame plates (5) are arranged with a group of screw rods (12), a connecting ring (13) is arranged between the ends of the two groups of screw rods (12), a No. 1 motor (6) is arranged on the outer wall of one group of fixed frame plates (5), the No. 1 motor (6) is connected to the end of one group of screw rods (12), a group of moving blocks (14) are arranged on the outer walls of the two groups of screw rods (12), a sliding groove (15) is arranged between the upper ends of the two groups of moving blocks (14) and the lower end of the top plates (3), and a No. 1 connecting plate (16) is arranged at the lower end of the two groups of sliding grooves (15), and a detection frame (16) is arranged below the top plates (3). 7), a connecting frame (17) is provided at the upper end of the detection frame (7), two groups of No. 2 connecting plates (18) are provided at the upper end of the connecting frame (17), a group of rotating connecting rods (19) are provided between the two groups of No. 2 connecting plates (18) and the two groups of No. 1 connecting plates (16), an electromagnet (20) is provided in the middle of the upper end of the detection frame (7), an iron core (22) is provided in the middle of the inner part of the electromagnet (20), a coil (27) is wound around the outer wall of the iron core (22), a group of wires (21) are provided on both sides of the upper end of the electromagnet (20), and the two ends of the coil (27) are respectively connected to the lower ends of the two groups of wires (21), a battery (4) is provided at the upper end of the top plate (3), and the upper ends of the two groups of wires (21) are connected to the battery (4), and a group of contact heads (23) are provided at both ends of the iron core (22), and the two groups of contact heads (23) are inserted into the interior of the detection frame (7).

2. A weld change detection device for steel structure according to claim 1, characterized in that: Rotation interfaces are provided between the two groups of screw rods (12) and the side walls of the two groups of fixed frame plates (5), respectively. The threads of the two groups of screw rods (12) are in opposite directions. The two groups of screw rods (12) are fixedly connected via a connecting ring (13).

3. The weld change detection device for steel structure according to claim 1, characterized in that: The two groups of screw rods (12) are rotatably connected to the side wall of the fixed frame plate (5) through the provided rotation interface, and threaded holes are provided between the two groups of sliding grooves (15) and the screw rods (12). The two groups of sliding grooves (15) are threadedly connected to the screw rods (12) through the provided threaded holes, and the upper end of the moving block (14) is slidably connected to the lower end of the top plate (3) through the provided sliding groove (15).

4. The weld change detection device for steel structure according to claim 1, characterized in that: Rotation interfaces are provided between the two ends of the two groups of rotating connecting rods (19) and the two groups of No. 1 connecting plates (16) and the two groups of No. 2 connecting plates (18), respectively. The two ends of the two groups of rotating connecting rods (19) are rotatably connected to the two groups of No. 1 connecting plates (16) and the two groups of No. 2 connecting plates (18) through the provided rotation interfaces. The connecting frame (17) and the detection frame (7) are both made of non-metallic materials. The iron core (22) and the contact head (23) are both made of iron materials. The detection frame (7) is located directly above the magnetic powder box (8), and the magnetic powder box (8) is filled with magnetic suspension.

5. The weld change detection device for steel structure according to claim 1, characterized in that: A group of mounting seats (9) are arranged on both sides of the magnetic powder box (8) at the upper end of the detection platform (1), a group of movable frames (29) are arranged in the middle of the two groups of mounting seats (9), a camera (30) is arranged in the middle of the front end of the two groups of movable frames (29), and a second motor (31) is arranged on the outer wall of the two groups of mounting seats (9). The two groups of second motors (31) are respectively connected to the side walls of the two groups of movable frames (29). A display screen (10) is also arranged on the front side of the upper end of the detection platform (1).

6. A weld change detection device for steel structure according to claim 5, characterized in that: A rotation interface is provided between the side wall of the movable frame (29) and the inner wall of the mounting seat (9); the side wall of the movable frame (29) is rotationally connected to the side wall of the mounting seat (9) via the provided rotation interface; and the camera (30) is electrically connected to the display screen (10).

7. The weld change detection device for steel structure according to claim 1, characterized in that: Two groups of positioning clamps (26) are arranged in the middle of the detection frame (7), a group of threaded rods (24) are arranged in the middle of the front and rear side walls of the detection frame (7), the front ends of the two groups of coils (27) are respectively connected to the middle of the rear end of a group of positioning clamps (26), the rear ends of the two groups of threaded rods (24) are provided with handles (25), and two groups of telescopic rods (28) are arranged between the two sides of the rear ends of the two groups of positioning clamps (26) and the inner wall of the detection frame (7).

8. The weld change detection device for steel structure according to claim 7, characterized in that: A threaded hole is provided between the threaded rod (24) and the side wall of the detection frame (7), and the threaded rod (24) is threadedly connected to the side wall of the detection frame (7) via the threaded hole. A rotation interface is provided between the end of the threaded rod (24) and the positioning clamping plate (26), and the threaded rod (24) is rotationally connected to the positioning clamping plate (26) via the rotation interface. The positioning clamping plate (26) and the threaded rod (24) are both made of non-metallic materials.

9. The weld change detection device for steel structure according to claim 1, characterized in that: Four groups of supporting legs (11) are provided at the lower end of the detection platform (1).

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