Detection equipment based on slab defects

Abstract

The invention relates to the technical field of slab defect detection, and discloses detection equipment based on slab defects. The detection equipment based on the slab defects comprises a detection rack, a magnetizing box is installed on the outer side of one end of the detection rack, a coil is installed in the magnetizing box, the top of the magnetizing box is connected with a first electrode block, a pipeline frame is installed on one side of the magnetizing box, and a spray head is installed on the surface of the pipeline frame; a demagnetization box is installed on one side of the pipeline frame, and a demagnetization coil is arranged in the demagnetization box. A magnetizing box and a demagnetizing box are installed on a detection rack, the magnetizing box and the demagnetizing box are the same in principle and internally provided with coils, after an electrode block and the coils are powered on, a plate blank is magnetized, after being magnetized, the plate blank can be used in cooperation with a magnetic suspension, the magnetic suspension is adsorbed through the magnetism of the plate blank, and the adsorption distribution condition of the magnetic suspension on the surface of the plate blank is observed. And judging the defect condition of the surface of the slab.

Description

Technical Field

[0001] The present invention relates to the technical field of slab defect detection, and in particular to a slab defect-based detection device. Background Art

[0002] Subcutaneous defects in slabs (including inclusions and pores) are extremely harmful to the surface quality of rolled plates. These defects are crushed or deformed during the rolling process and exposed on the surface of the rolled plates, causing linear defects in the rolled plates, which greatly harm the surface quality of the rolled plates and subsequent coating and plating performance. Slabs are widely used in automobiles, shipbuilding, wind power generation, pressure vessels, high-rise buildings, oil pipelines, engineering machinery, hydropower projects, highways, bridge construction and other fields. There are two basic ways to strengthen the metal materials of continuous casting billets. One is to make defect-free complete crystals to make their strength close to the theoretical strength; the other is to try to prevent the movement of dislocations in defective metal crystals.

[0003] When current slab defect detection equipment detects defects on the slab surface, it determines the location of the uneven surface of the slab based on the distribution of the magnetic suspension, thereby realizing defect detection on the slab surface. However, during operation, the slab is magnetized and the magnetism of the slab is combined with the magnetic suspension. After the magnetic distribution detection is completed, it is not convenient to perform multi-angle synchronous observation and detection on the slab surface at this time, and it is also not conducive to the rapid and effective demagnetization of the slab, resulting in the slab still having strong magnetism after unloading, causing the slab to absorb other impurities on the surface, affecting the normal transportation and use of the slab. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the deficiencies in the prior art, the present invention provides a slab defect detection device, which is capable of synchronously observing the surface magnetic suspension distribution of the slab from multiple angles and achieving rapid and effective demagnetization of the slab body.

[0006] (II) Technical solution

[0007] In order to realize the above-mentioned multi-angle synchronous observation of the surface magnetic suspension distribution of the slab and realize the purpose of rapid and effective demagnetization of the slab body, the present invention provides the following technical solution: comprising a detection frame, a magnetizing box is installed on the outer side of one end of the detection frame, and a coil is installed inside the magnetizing box, the top of the magnetizing box is connected to an electrode block 1, a pipe rack is installed on one side of the magnetizing box, a nozzle is installed on the surface of the pipe rack, a demagnetizing box is installed on one side of the pipe rack, and a demagnetizing coil is arranged inside the demagnetizing box, and the top of the demagnetizing box An electrode block 2 is installed, a mounting bracket is installed on the right side of the demagnetization box, and a slider is slidably installed on the surface of the mounting bracket, a suspension rod is fixedly connected to the bottom of the slider, and a lifting cylinder is sleeved on the surface of the suspension rod, and a pulling frame is movably connected to the lower end of the lifting cylinder, a mounting rod is fixedly connected around the lower end of the suspension rod, and a claw frame is movably installed on the end of the mounting rod away from the suspension rod, a visual camera 1 is installed on the surface of the claw frame, and a visual camera 2 is installed on the lower end of the suspension rod, and a lifting cylinder is arranged between the upper end of the lifting cylinder and the upper end of the suspension rod.

[0008] Preferably, a ball screw is installed between the slider and the mounting bracket, and the suspension rod forms a sliding structure between the slider and the mounting bracket.

[0009] Preferably, a movable sleeve structure is formed between the lifting cylinder and the suspension rod, and the lower end of the lifting cylinder is connected to the claw via a pulling frame.

[0010] Preferably, the claw frame is rotatably connected to the mounting rod, and both ends of the pulling frame are rotatably connected to the lifting cylinder and the claw frame respectively.

[0011] Preferably, the pulling frame and the mounting rod are both distributed in a triangular shape with respect to the symmetric center line of the lifting cylinder, and the lifting cylinder forms a lifting structure through a lifting cylinder.

[0012] Preferably, the magnetizing box, the pipe rack, the demagnetizing box and the mounting bracket are all located on the same straight line, the magnetizing box and the demagnetizing box have the same structure, and the direction of the coil magnetic field inside the magnetizing box is opposite to the direction of the coil magnetic field inside the demagnetizing box.

[0013] Preferably, a chain belt is installed inside the detection frame, a rotating sprocket is installed inside the chain belt, and a bottom bracket is installed on the surface of the chain belt.

[0014] Preferably, limit frames are arranged on the left and right sides of the base, and the outer sides of the limit frames are rotatably connected with threaded push rods.

[0015] Preferably, the limit frame is movably connected to the detection frame via a threaded push rod, and the threaded push rod and the detection frame are movably connected via a thread.

[0016] Compared with the prior art, the present invention provides a slab defect detection device, which has the following beneficial effects:

[0017] 1. A magnetizing box and a demagnetizing box are installed on the detection frame. The magnetizing box and the demagnetizing box have the same principle and are both equipped with coils. After the electrode block and the coil are energized, when current passes through the coil, each part of the coil will generate its own magnetic field, and these magnetic fields will be superimposed on each other, thereby forming a stronger magnetic field around the coil. The energized coil will have moving charges, and the moving charges will generate a magnetic field, thereby magnetizing the slab. After the slab is magnetized, it can be used in conjunction with the magnetic suspension, and the magnetic suspension is adsorbed by the magnetism of the slab. The adsorption distribution of the magnetic suspension on the surface of the slab is observed, and then the defects on the surface of the slab are judged. After the inspection is completed, the slab is demagnetized using the demagnetizing box. The demagnetization coil and the direction of the magnetic field set in the demagnetizing box are opposite to those of the magnetizing box. The magnetic object is placed in the reverse magnetic field so that the direction of the magnetic field it receives is opposite to the original magnetic field, thereby achieving the effect of demagnetization and improving the demagnetization effect.

[0018] 2. A mounting bracket is installed at the tail end of the detection frame, and a suspension rod is arranged on the mounting bracket. The mounting rod is fixedly connected to the lower end of the suspension rod. The visual camera at one end of the mounting rod is movably connected to the lifting cylinder through a pulling frame. The lifting cylinder moves up and down along the mounting rod, and the pulling frame will pull the claw frame on which the visual camera 1 is installed to rotate. During the rotation process, the claw frame will adjust the monitoring direction of the visual camera 1, so that the surface of the slab can be observed from different angles. The pulling of the pulling frame keeps the three groups of visual cameras 1 adjusted synchronously to achieve multi-angle synchronous observation. At the same time, the visual camera 2 is installed at the bottom of the lower end of the suspension rod, and cooperates with the adjustable visual camera 1 to achieve wide-area and multi-angle visual inspection, which is conducive to more detailed observation and judgment of the depressions on the surface of the slab and the distribution of the magnetic suspension from different angles and visual entry angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the detection rack in the present invention;

[0021] Figure 3 For the present invention Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0022] Figure 4 It is a schematic diagram of the mounting bracket structure in the present invention;

[0023] Figure 5 It is a schematic diagram of the structure of the demagnetization box in the present invention;

[0024] Figure 6 It is a schematic diagram of the coil structure in the present invention.

[0025] Among them: 1. Detection frame; 2. Chain belt; 3. Rotating sprocket; 4. Bottom support; 5. Magnetizing box; 6. Electrode block 1; 7. Pipe rack; 8. Nozzle; 9. Demagnetizing box; 10. Electrode block 2; 11. Mounting bracket; 12. Limiting frame; 13. Threaded push rod; 14. Slider; 15. Ball screw; 16. Hanging rod; 17. Lifting cylinder; 18. Lifting cylinder; 19. Mounting rod; 20. Claw frame; 21. Visual camera 1; 22. Visual camera 2; 23. Pulling frame; 24. Coil. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figure 1-6 A detection device based on slab defects includes a detection frame 1, characterized in that: a magnetizing box 5 is installed on the outer side of one end of the detection frame 1, and a coil 24 is installed inside the magnetizing box 5, an electrode block 6 is connected to the top of the magnetizing box 5, a pipe rack 7 is installed on one side of the magnetizing box 5, a nozzle 8 is installed on the surface of the pipe rack 7, a demagnetizing box 9 is installed on one side of the pipe rack 7, and a demagnetizing coil 24 is arranged inside the demagnetizing box 9, an electrode block 10 is installed on the top of the demagnetizing box 9, a mounting bracket 11 is installed on the right side of the demagnetizing box 9, and the mounting bracket 12 is installed on the right side of the demagnetizing box 9. A slider 14 is slidably installed on the surface of the frame 11, and a suspension rod 16 is fixedly connected to the bottom of the slider 14, and a lifting cylinder 17 is sleeved on the surface of the suspension rod 16, and a pulling frame 23 is movably connected to the lower end of the lifting cylinder 17, and a mounting rod 19 is fixedly connected around the lower end of the suspension rod 16, and a claw frame 20 is movably installed at one end of the mounting rod 19 away from the suspension rod 16, a visual camera 21 is installed on the surface of the claw frame 20, and a visual camera 22 is installed at the lower end of the suspension rod 16, and a lifting cylinder 18 is arranged between the upper end of the lifting cylinder 17 and the upper end of the suspension rod 16.

[0028] A ball screw 15 is installed between the slider 14 and the mounting bracket 11, and the suspension rod 16 forms a sliding structure between the slider 14 and the mounting bracket 11. The lifting cylinder 17 and the suspension rod 16 are in a movable sleeve structure, and the lower end of the lifting cylinder 17 is connected to the claw through the pulling frame 23, and the claw frame 20 and the mounting rod 19 are rotatably connected. The two ends of the pulling frame 23 are respectively rotatably connected with the lifting cylinder 17 and the claw frame 20. The pulling frame 23 and the mounting rod 19 are distributed in a triangle with respect to the symmetrical center line of the lifting cylinder 17, and the lifting cylinder 17 forms a lifting structure through the lifting cylinder 18;

[0029] Specifically, when the lifting cylinder 17 is lifted and moved along the boom 16, the claw frame 20 is pulled to move through the pulling frame 23. When the claw frame 20 moves, the monitoring angle of the visual camera 1 21 is adjusted to achieve visual detection at different angles. At the same time, the visual camera 1 21 on the claw frame 20 and the visual camera 2 22 at the lower end of the boom 16 cooperate with each other to achieve visual detection at more angles.

[0030] The magnetizing box 5, the pipe rack 7, the demagnetizing box 9 and the mounting bracket 11 are all located on the same straight line. The magnetizing box 5 has the same structure as the demagnetizing box 9, and the magnetic field direction of the coil 24 inside the magnetizing box 5 is opposite to the magnetic field direction of the coil 24 inside the demagnetizing box 9.

[0031] Specifically, the magnetizing box 5, the pipe rack 7, the demagnetizing box 9 and the mounting bracket 11 are arranged on the same straight line, and the slab can pass through the magnetizing box 5, the pipe rack 7, the demagnetizing box 9 and the mounting bracket 11 in sequence by the driving of the chain belt 2 and the rotating sprocket 3 on the detection frame 1.

[0032] A chain belt 2 is installed inside the detection frame 1, and a rotating sprocket 3 is installed inside the chain belt 2, and a bottom bracket 4 is installed on the surface of the chain belt 2, and a limit frame 12 is arranged on the left and right sides of the bottom bracket 4, and the outer side of the limit frame 12 is threadedly rotatably connected with a threaded push rod 13, and the limit frame 12 is movably connected to the detection frame 1 through the threaded push rod 13, and the threaded push rod 13 and the detection frame 1 are threadedly movably connected;

[0033] Specifically, the threaded connection structure between the threaded push rod 13 and the detection frame 1 is used to push the limit frame 12 to move, and the limit frame 12 is used to limit the outer side of the chain belt 2 to avoid the slab on the base 4 from being offset, thereby ensuring the accuracy of the detection. The driving device is used to drive the rotating sprocket 3 to rotate, and the rotating sprocket 3 will drive the chain belt 2 to rotate, thereby realizing the movement of the slab placed on the base 4, so that it passes under the magnetizing box 5, the pipe rack 7, the demagnetizing box 9 and the mounting bracket 11 in turn, thereby realizing magnetization, spraying of magnetic suspension, demagnetization and visual observation detection in turn.

[0034] First, when in use, the slab is placed in the base 4 on the chain belt 2. According to the size of the slab, the threaded connection structure between the threaded push rod 13 and the detection frame 1 can be used to push the limit frame 12 so that the limit frame 12 is limited from both sides. One end of the threaded push rod 13 is rotatably connected to the limit frame 12, which facilitates the rotation of the threaded push rod 13. Secondly, the driving device is used to drive the rotating sprocket 3 to rotate, and the rotating sprocket 3 will drive the chain belt 2 to rotate, so as to move the slab placed on the base 4, so as to pass through the magnetizing box 5, the pipeline frame 7, the demagnetizing box 9 and the like in sequence. When passing through the magnetizing box 5 below the mounting bracket 11, the electrode block and the coil 24 are energized. When current passes through the coil 24, each part of the coil 24 will generate its own magnetic field, and these magnetic fields will be superimposed on each other, thereby forming a magnetic field inside the magnetizing box 5. The energized coil 24 will have moving charges, and the moving charges will generate a magnetic field, thereby magnetizing the slab. Then the slab will move to the bottom of the pipe rack 7, and the nozzle 8 on the pipe rack 7 will spray the magnetic suspension on the passing slab. The slab will pass through the mounting bracket 11, and the lifting cylinder 18 will drive the lifting cylinder 17 along the As the boom 16 moves and the lifting cylinder 17 moves, the pulling frame 23 is pulled to pull the claw frame 20 at one end of the mounting rod 19 to rotate. During the rotation of the claw frame 20, the visual camera 21 on the claw frame 20 will visually detect the defects on the surface of the slab. During the rotation of the claw frame 20, the monitoring direction of the visual camera 21 is adjusted to observe the surface of the slab from different angles. The pulling of the pulling frame 23 keeps the three groups of visual cameras 21 adjustable synchronously. The visual camera 21 on the claw frame 20 and the visual camera 2 at the lower end of the boom 16 are adjusted synchronously. 22 cooperate with each other to realize multi-angle synchronous observation. At the same time, the ball screw 15 will drive the slider 14 and the suspension rod 16 to move, and the detection range is wider. The visual camera 1 21 and the visual camera 2 22 will synchronously observe the adsorption distribution of the magnetic suspension on the surface of the slab, and then judge the defects on the surface of the slab. After the detection is completed, the demagnetization box 9 is used to demagnetize the slab. The demagnetization coil 24 and the direction of the magnetic field arranged in the demagnetization box 9 are opposite to those of the magnetizing box 5. The slab enters the reverse magnetic field, so that the direction of the magnetic field it receives is opposite to the original magnetic field, thereby demagnetizing the slab and completing the defect detection of the slab.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A slab defect detection device, comprising a detection frame (1), characterized in that: A magnetizing box (5) is installed on the outer side of one end of the detection frame (1), and a coil (24) is installed inside the magnetizing box (5); an electrode block 1 (6) is connected to the top of the magnetizing box (5); a pipe rack (7) is installed on one side of the magnetizing box (5); a nozzle (8) is installed on the surface of the pipe rack (7); a demagnetizing box (9) is installed on one side of the pipe rack (7), and a demagnetizing coil (24) is arranged inside the demagnetizing box (9); an electrode block 2 (10) is installed on the top of the demagnetizing box (9); a mounting bracket (11) is installed on the right side of the demagnetizing box (9), and a slider is slidably mounted on the surface of the mounting bracket (11). (14), the bottom of the slider (14) is fixedly connected to a suspension rod (16), and a lifting cylinder (17) is sleeved on the surface of the suspension rod (16), and the lower end of the lifting cylinder (17) is movably connected to a pulling frame (23), the lower end of the suspension rod (16) is fixedly connected to a mounting rod (19), and a claw frame (20) is movably installed at one end of the mounting rod (19) away from the suspension rod (16), a visual camera 1 (21) is installed on the surface of the claw frame (20), and a visual camera 2 (22) is installed at the lower end of the suspension rod (16), and a lifting cylinder (18) is arranged between the upper end of the lifting cylinder (17) and the upper end of the suspension rod (16).

2. The slab defect detection device according to claim 1, characterized in that: A ball screw (15) is installed between the slider (14) and the mounting bracket (11), and a suspension rod (16) forms a sliding structure between the slider (14) and the mounting bracket (11).

3. The slab defect detection device according to claim 1, characterized in that: The lifting cylinder (17) and the suspension rod (16) are provided with a movable sleeve structure, and the lower end of the lifting cylinder (17) is connected to the claw via a pulling frame (23).

4. The slab defect detection device according to claim 1, characterized in that: The claw frame (20) is rotatably connected to the mounting rod (19), and both ends of the pulling frame (23) are rotatably connected to the lifting cylinder (17) and the claw frame (20).

5. The slab defect detection device according to claim 1, characterized in that: The pulling frame (23) and the mounting rod (19) are both distributed in a triangular shape with respect to the symmetrical center line of the lifting cylinder (17), and the lifting cylinder (17) forms a lifting structure through the lifting cylinder (18).

6. The slab defect detection device according to claim 1, characterized in that: The magnetizing box (5), the pipe rack (7), the demagnetizing box (9) and the mounting bracket (11) are all located on the same straight line; the magnetizing box (5) and the demagnetizing box (9) have the same structure; and the magnetic field direction of the coil (24) inside the magnetizing box (5) is opposite to the magnetic field direction of the coil (24) inside the demagnetizing box (9).

7. The slab defect detection device according to claim 1, characterized in that: A chain belt (2) is installed inside the detection frame (1), a rotating sprocket (3) is installed inside the chain belt (2), and a base (4) is installed on the surface of the chain belt (2).

8. The slab defect detection device according to claim 7, characterized in that: The left and right sides of the base support (4) are provided with limit frames (12), and the outer sides of the limit frames (12) are rotatably connected with threaded push rods (13).

9. The slab defect detection device according to claim 8, characterized in that: The limiting frame (12) is movably connected to the detection frame (1) via a threaded push rod (13), and the threaded push rod (13) and the detection frame (1) are movably connected via threads.

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