Magnetic particle detection device for highway bridge steel structure detection

Abstract

The utility model discloses a magnetic particle detection device for highway bridge steel structure detection, specifically relates to the technical field of magnetic particle detection, including work table, work table bottom is equipped with support frame, is equipped with the container box for containing magnetic powder on the support frame, work table top is equipped with the descending mechanism of driving steel structure to descend, and the descending mechanism includes two fixed frames of being equipped at work table top, is equipped with the support plate in the fixed frame, is equipped with two first electric push rods at the top of fixed frame, and the first electric push rod bottom is fixedly connected with the top of support plate, and the support plate bottom is fixedly equipped with the placing frame, is equipped with the pressing plate in the placing frame, and the placing frame top is equipped with the second electric push rod. The utility model discloses through the descending mechanism can descend steel structure in the container box inside, and the steel structure full adsorption magnetic powder is convenient, improves the detection efficiency, still through the sealing of container box can be carried out to the blocking mechanism, avoids the impurity and enters the container box inside, and the quality of magnetic powder is influenced.

Description

Technical Field

[0001] This utility model relates to the field of magnetic particle testing technology, and specifically to a magnetic particle testing device for testing the steel structure of highway bridges. Background Technology

[0002] Magnetic particle testing can only be used to detect defects on or near the surface of ferromagnetic materials. Because discontinuous magnetic traces accumulate on the surface being tested, the shape, position and size of the discontinuities can be displayed intuitively, and their properties can be roughly determined. Magnetic particle testing is also known as magnetic particle inspection or magnetic particle flaw detection, and it is one of the five conventional methods of nondestructive testing.

[0003] For example, Chinese patent application No. 202021149619.6 provides a magnetic particle testing device for inspecting steel structures of highway bridges. The rotating mechanism includes a rotating motor and a first clamping block. The output end of the rotating motor is fixedly connected to a rotating shaft via a coupling. One end of the rotating shaft passes through a rear fixing block and extends to the outside of the rear fixing block. A second clamping block is fixedly connected to one end of the rotating shaft. This technical solution uses the rotating motor, the first clamping block, the rotating shaft, the second clamping block, the first clamping groove, and the second clamping groove in cooperation to place the steel structure to be inspected between the first clamping block and the second clamping block. The rotating motor drives the rotating shaft to rotate, causing the second clamping block to rotate, thus rotating the steel structure to be inspected. With the cooperation of the magnetic particle box, the cracks in the steel structure to be inspected can be detected from all angles, improving magnetization efficiency and practicality.

[0004] However, the following problems still exist in this technical solution: the magnetic powder is prone to scattering during the descent process, which will lead to uneven adsorption on the steel structure surface and thus affect the detection. Utility Model Content

[0005] The purpose of this invention is to provide a magnetic particle testing device for the inspection of steel structures of highway bridges. The device uses a lowering mechanism to lower the steel structure into the container, which facilitates the full adsorption of magnetic particles by the steel structure and improves the testing efficiency. The device also uses a shielding mechanism to seal the container and prevent impurities from entering the container and affecting the quality of the magnetic particles, thereby solving the above-mentioned shortcomings in the technology.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a magnetic particle testing device for inspecting the steel structure of highway bridges, comprising a workbench, a support frame at the bottom of the workbench, a container for holding magnetic particles on the support frame, and a lowering mechanism at the top of the workbench for lowering the steel structure.

[0007] Preferably, the lowering mechanism includes two fixed frames on the top of the workbench, with a support plate inside the fixed frame. Two first electric push rods are passed through the top of the fixed frame, with the bottom ends of the first electric push rods fixedly connected to the top of the support plate. A placement frame is fixedly provided at the bottom of the support plate, with a pressing plate inside the placement frame. A second electric push rod is passed through the top of the placement frame, with the bottom end of the second electric push rod fixedly connected to the top of the pressing plate, for driving the steel structure to descend.

[0008] Preferably, the workbench is equipped with a sealing mechanism for sealing the container. The sealing mechanism includes a rotating shaft inside the workbench, with a sealing cloth wrapped around the outside of the rotating shaft. A threaded rod is movably connected to one side of the workbench via a bearing. Two connecting plates are fixedly provided on one side of the sealing cloth. The threaded rod passes through the connecting plates and is threadedly connected to the connecting plates. A first motor is fixedly provided at one end of the threaded rod, and a second motor is fixedly provided at one end of the rotating shaft. A sliding rod is provided on one side of the workbench, and the sliding rod passes through the connecting plates for sealing the container.

[0009] Preferably, the bottom of the workbench is provided with a moving mechanism that drives the two fixed frames to move. The moving mechanism includes two fixed plates on the support frame. One of the fixed plates has a bidirectional threaded rod movably connected inside through a bearing. A first electric push rod is fixed on both sides of the bottom of the fixed frame. The first electric push rod passes through the workbench and extends to the bottom of the workbench. The bidirectional threaded rod passes through the moving plate and is connected to the moving plate by threads. A third motor is fixed at one end of the bidirectional threaded rod. A limit rod is provided inside the other fixed plate. The limit rod passes through the moving plate and is used to drive the two fixed frames to move.

[0010] Preferably, the container is equipped with a filter screen inside, and support rods are fixed on both sides of the top of the filter screen. The support frame is equipped with a limiting mechanism for fixing the container. The limiting mechanism includes a limiting plate on one side of the support frame. Both the limiting plate and the support frame have two threaded holes. The two threaded holes are connected by the same bolt for fixing the container.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. Place the steel structure inside the placement frame, open the second electric push rod, which can drive the pressing plate to move downward. The pressing plate can fix the steel structure inside the placement frame. Then open the first electric push rod, which can drive the support plate to descend. The descending support plate can lower the steel structure into the container, which is convenient for the steel structure to fully adsorb magnetic powder and improve the detection efficiency. 2. Start the first motor and the second motor. The second motor can drive the rotating shaft to rotate, which can release the sealing cloth. The first motor can drive the threaded rod to rotate, which can drive the connecting plate to move. The connecting plate can drive the sealing cloth to move, covering the top of the container with the sealing cloth. The sealing cloth can seal the container and prevent impurities from entering the container and affecting the quality of the magnetic powder. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0013] Figure 1 This is a front view of the present invention; Figure 2 This is a schematic diagram of the lowering mechanism of this utility model; Figure 3 This is a schematic diagram of the sealed container of this utility model. Figure 4 This is a schematic diagram of the shielding mechanism of this utility model; Figure 5 This is a schematic diagram of the structure of the moving mechanism of this utility model; Figure 6 This is a schematic diagram of the limiting mechanism of this utility model.

[0014] Explanation of reference numerals in the attached figures: 1. Workbench; 2. Support frame; 3. Packing box; 4. Lowering mechanism, 401. Fixing frame, 402. Support plate, 403. First electric push rod, 404. Placement frame, 405. Pressing plate, 406. Second electric push rod; 5. Blocking mechanism, 501. Rotating shaft, 502. Sealing cloth, 503. Threaded rod, 504. Connecting plate, 505. First motor, 506. Slide rod, 507. Second motor; 6. Moving mechanism, 601. Fixed plate, 602. Bidirectional threaded rod, 603. Moving plate, 604. Third motor, 605. Limiting rod; 7 filters, 8 support rods; 9 Limiting mechanism, 901 Limiting plate, 902 Threaded hole, 903 Bolt. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model provides, for example Figures 1-6 The magnetic particle testing device shown is used for testing the steel structure of highway bridges. It includes a workbench 1, a support frame 2 at the bottom of the workbench 1, a container 3 for holding magnetic particles on the support frame 2, and a lowering mechanism 4 at the top of the workbench 1 to drive the steel structure down. like Figure 2 As shown, the lowering mechanism 4 includes two fixed frames 401 on the top of the workbench 1. The fixed frame 401 has a support plate 402 inside. Two first electric push rods 403 are passed through the top of the fixed frame 401. The bottom end of the first electric push rod 403 is fixedly connected to the top of the support plate 402. A placement frame 404 is fixedly provided at the bottom of the support plate 402. A pressing plate 405 is provided inside the placement frame 404. A second electric push rod 406 is passed through the top of the placement frame 404. The bottom end of the second electric push rod 406 is fixedly connected to the top of the pressing plate 405. like Figure 5 As shown, the bottom of the workbench 1 is provided with a moving mechanism 6 that drives two fixed frames 401 to move. The moving mechanism 6 includes two fixed plates 601 on the support frame 2. One of the fixed plates 601 is movably connected to a bidirectional threaded rod 602 through a bearing. The bottom sides of the fixed frame 401 are fixed with first electric push rods 403. The first electric push rods 403 pass through the workbench 1 and extend to the bottom of the workbench 1. The bidirectional threaded rod 602 passes through the moving plate 603 and is connected to the moving plate 603 through a thread. One end of the bidirectional threaded rod 602 is fixed with a third motor 604. The other fixed plate 601 is provided with a limiting rod 605. The limiting rod 605 passes through the moving plate 603. Start the third motor 604, which can drive the bidirectional threaded rod 602 to rotate. The rotation of the bidirectional threaded rod 602 drives the moving plate 603 to move. The movement of the moving plate 603 drives one side of the fixed frame 401. The fixed frame 401 can slide along the limiting rod 605. The limiting rod 605 can limit the fixed frame 401. The distance between the two fixed frames 401 can be adjusted according to the length of the steel structure. The steel structure is placed inside the placement frame 404. The second electric push rod 406 is opened, which drives the pressing plate 405 to move downward. The pressing plate 405 can fix the steel structure inside the placement frame 404. Then the first electric push rod 403 is opened, which drives the support plate 402 to descend. The descending support plate 402 can lower the steel structure into the container 3, which facilitates the steel structure to fully adsorb magnetic powder and improves the detection efficiency.

[0017] like Figure 4As shown, the workbench 1 is equipped with a shielding mechanism 5 for sealing the container 3. The shielding mechanism 5 includes a rotating shaft 501 inside the workbench 1. The rotating shaft 501 is wrapped with a sealing cloth 502. A threaded rod 503 is movably connected to one side of the workbench 1 through a bearing. Two connecting plates 504 are fixedly provided on one side of the sealing cloth 502. The threaded rod 503 passes through the connecting plates 504 and is connected to the connecting plates 504 by threads. A first motor 505 is fixedly provided at one end of the threaded rod 503, and a second motor 507 is fixedly provided at one end of the rotating shaft 501. A slide rod 506 is provided on one side of the workbench 1. The slide rod 506 passes through the connecting plate 504. The first motor 505 and the second motor 507 are started. The second motor 507 drives the rotating shaft 501 to rotate, which releases the sealing cloth 502. The first motor 505 drives the threaded rod 503 to rotate, which moves the connecting plate 504. The connecting plate 504 moves the sealing cloth 502 and slides along the slide rod 506. The slide rod 506 limits the sealing cloth 502 to prevent it from shifting and covers the top of the container 3. The sealing cloth 502 seals the container 3, preventing impurities from entering the container 3 and affecting the quality of the magnetic powder.

[0018] like Figure 6 As shown, the container 3 is equipped with a filter screen 7 inside. Support rods 8 are fixed on both sides of the top of the filter screen 7. The support frame 2 is equipped with a limiting mechanism 9 for fixing the container 3. The limiting mechanism 9 includes a limiting plate 901 on one side of the support frame 2. The limiting plate 901 and the support frame 2 are both provided with two threaded holes 902. The two threaded holes 902 are connected to the same bolt 903. Rotate bolt 903 to unscrew it from threaded hole 902, then pull limit plate 901 to remove it from support frame 2. Next, pull container 3 to remove it from support frame 2. Use support rod 8 to pull filter screen 7 out from container 3. Filter screen 7 can filter out impurities in magnetic powder, improving the quality of magnetic powder.

[0019] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A magnetic particle testing device for inspecting the steel structure of highway bridges, comprising a workbench (1), characterized in that: The workbench (1) is provided with a support frame (2) at the bottom, and a container (3) for holding magnetic powder is provided on the support frame (2). The workbench (1) is provided with a lowering mechanism (4) that drives the steel structure to descend. The lowering mechanism (4) includes two fixed frames (401) on the top of the workbench (1). The fixed frame (401) has a support plate (402) inside. The top of the fixed frame (401) is provided with two first electric push rods (403). The bottom end of the first electric push rod (403) is fixedly connected to the top of the support plate (402). The bottom of the support plate (402) is fixedly provided with a placement frame (404). The placement frame (404) has a pressing plate (405) inside. The top of the placement frame (404) is provided with a second electric push rod (406). The bottom end of the second electric push rod (406) is fixedly connected to the top of the pressing plate (405).

2. The magnetic particle testing device for inspecting steel structures of highway bridges according to claim 1, characterized in that: The workbench (1) is equipped with a shielding mechanism (5) to seal the container (3). The shielding mechanism (5) includes a rotating shaft (501) located inside the workbench (1). The rotating shaft (501) is wrapped with a sealing cloth (502). A threaded rod (503) is movably connected to one side of the workbench (1) via a bearing. Two connecting plates (504) are fixedly provided on one side of the sealing cloth (502). The threaded rod (503) passes through the connecting plate (504) and is connected to the connecting plate (504) by a thread. A first motor (505) is fixedly provided at one end of the threaded rod (503), and a second motor (507) is fixedly provided at one end of the rotating shaft (501).

3. The magnetic particle testing device for inspecting steel structures of highway bridges according to claim 2, characterized in that: The workbench (1) has a slide rod (506) on one side inside, and the slide rod (506) passes through the connecting plate (504).

4. The magnetic particle testing device for inspecting steel structures of highway bridges according to claim 1, characterized in that: The bottom of the workbench (1) is provided with a moving mechanism (6) that drives the two fixed frames (401) to move. The moving mechanism (6) includes two fixed plates (601) mounted on the support frame (2). One of the fixed plates (601) is movably connected to a bidirectional threaded rod (602) via a bearing. The bottom sides of the fixed frame (401) are fixedly provided with first electric push rods (403). The first electric push rods (403) pass through the worktable (1) and extend to the bottom of the worktable (1). The bidirectional threaded rod (602) passes through the moving plate (603) and is connected to the moving plate (603) via a thread. A third motor (604) is fixedly provided at one end of the bidirectional threaded rod (602).

5. The magnetic particle testing device for inspecting steel structures of highway bridges according to claim 4, characterized in that: Another fixed plate (601) is provided with a limiting rod (605) inside, which penetrates the moving plate (603).

6. The magnetic particle testing device for inspecting steel structures of highway bridges according to claim 1, characterized in that: The container (3) is equipped with a filter screen (7), and the filter screen (7) is fixedly provided with support rods (8) on both sides of the top. The support frame (2) is provided with a limiting mechanism (9) for fixing the container (3). The limiting mechanism (9) includes a limiting plate (901) located on one side of the support frame (2). Both the limiting plate (901) and the support frame (2) have two threaded holes (902). The two threaded holes (902) are connected by the same bolt (903).

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