A wet magnetic particle flaw detector

Abstract

The utility model discloses a kind of wet magnetic particle flaw detectors, including first cabinet and second cabinet of parallel arrangement, two parallel guide rods are fixed in first cabinet, one end of two guide rods is connected with the outer wall of second cabinet, and slidingly connected with moving trolley on two guide rods, the upper portion in second cabinet is equipped with first cylinder, one end of moving trolley is connected with mounting plate, second cylinder opposite with first cylinder is installed on mounting plate, the opposite end of first cylinder and second cylinder is all connected with electrode chuck, electrode chuck on first cylinder is located in magnetizing coil;Support beam away from one end of second cabinet is connected with blocking mechanism, when moving trolley enters magnetizing coil, moving trolley is blocked by blocking mechanism, so that moving trolley position keeps stable. After moving trolley enters magnetizing coil, moving trolley is resisted by blocking mechanism, so that two electrode chucks clamp workpiece, prevent electrode chuck from loosening due to moving trolley displacement.

Description

Technical Field

[0001] This utility model relates to the field of flaw detector technology, specifically a wet magnetic particle flaw detector. Background Technology

[0002] A flaw detector is a non-destructive testing device used to detect internal and surface defects in materials or workpieces. It is widely used in industrial manufacturing, construction engineering, aerospace, rail transportation and other fields to ensure the integrity and safety of materials and structures.

[0003] The current flaw detectors mainly have the following problems: (1) The workpiece to be inspected is usually sent to the spray system and magnetization coil by a mobile trolley. The mobile trolley is either pushed manually or driven by a drive device. However, the magnetic suspension sprayed by the spray system is easy to damage the drive device. Moreover, when the drive device is damaged, it is impossible to pull the mobile trolley out of the magnetization coil; (2) After the mobile trolley enters the magnetization coil, the mobile trolley is easy to shake, which causes the electrode clamps at both ends of the workpiece to be inspected to loosen, which is not conducive to magnetizing the workpiece. Utility Model Content

[0004] To address the shortcomings of existing technologies, this invention provides a wet magnetic particle flaw detector to solve the problems of easy damage to the drive device of the current mobile trolley and instability of the mobile trolley within the magnetization coil.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A wet magnetic particle inspection machine includes a first chamber and a second chamber arranged side by side. The height of the first chamber is lower than that of the second chamber. Two parallel guide rods are fixed inside the first chamber, one end of each guide rod is connected to the outer wall of the second chamber, and a moving trolley is slidably connected to the two guide rods. A spray system is provided at the end of the first chamber away from the second chamber, with the spraying end of the spray system located above the moving trolley. Magnetic suspension liquid is sprayed onto the moving trolley through the spraying end of the spray system. A support beam is installed inside the first chamber near the second chamber, and a magnetizing coil is installed on the support beam. The two guide rods are located inside the magnetizing coil. A push-pull mechanism is installed on the outer side of the end away from the second housing. The push-pull mechanism pushes and pulls the moving trolley to move the trolley in and out of the magnetizing coil. A first cylinder is installed in the upper part of the second housing. One end of the moving trolley is connected to a mounting plate. A second cylinder opposite to the first cylinder is installed on the mounting plate. Electrode clamps are connected to the opposite ends of the first and second cylinders. The electrode clamps on the first cylinder are located inside the magnetizing coil. A blocking mechanism is connected to the support beam at the end away from the second housing. When the moving trolley enters the magnetizing coil, the blocking mechanism blocks the moving trolley and keeps the position of the moving trolley stable.

[0007] Preferably, the spraying system includes a liquid storage tank located in the lower part of the second tank, a pump body installed on the outside of the liquid storage tank, an inlet end of the pump body connected to the liquid storage tank via a pipe, an outlet end of the pump body connected to an outlet pipe, a main pipe connected to the outlet pipe, and several parallel branch pipes connected to one side of the main pipe. All branch pipes are located above the first tank, and several spray pipes are installed on the bottom surface of the branch pipes, with nozzles installed at the lower end of the spray pipes.

[0008] The above technical solution uses a pump to deliver the magnetic suspension liquid from the storage tank to the outlet pipe, and then sprays it onto the workpiece to be inspected on the moving trolley via the main pipe, branch pipes, and nozzles. Additionally, an injection pipe is connected to the upper part of the storage tank, allowing for convenient addition of magnetic suspension liquid into the tank.

[0009] Preferably, the magnetizing coil includes multiple sets of rectangular and parallel first coils, all four sides of which are connected by second coils. A first protective cover is also installed on the support beam, and the magnetizing coil is located inside the first protective cover.

[0010] The above technical solution generates a circumferential magnetic field through a parallel, rectangular first coil and a second coil perpendicular to the first coil, enabling comprehensive non-contact magnetization of the workpiece being inspected. The magnetizing coil is protected by a first protective cover.

[0011] Preferably, the push-pull mechanism includes a third cylinder installed on the outer wall of the first housing away from the second housing. The telescopic end of the third cylinder is connected to an adapter plate, and a fourth cylinder is installed on the adapter plate. The telescopic end of the fourth cylinder is connected to a push-pull rod. A push-pull block is connected to the lower part of the mounting plate. The push-pull block has a push-pull hole that matches the push-pull rod. A second protective cover is installed on the inner wall of the first housing near the third cylinder. The bottom of the second protective cover and the side facing the second housing are open so that the third cylinder can enter the second protective cover. The end of the moving trolley away from the second housing is also connected to an upwardly inclined handrail.

[0012] The above technical solution involves controlling the extension of the third cylinder to move the adapter plate towards the trolley when pushing the trolley. When the push-pull rod reaches above the push-pull hole, the fourth cylinder extends, causing the push-pull rod to descend and insert into the push-pull hole. Continuing to extend the third cylinder pushes the trolley into the magnetizing coil. Then, the fourth cylinder retracts, disengaging the push-pull rod from the push-pull hole, and the third cylinder retracts, returning to the second protective cover, reducing the amount of magnetic suspension sprayed onto the third cylinder and maximizing its protection. To pull the trolley out of the magnetizing coil, the same method is used to re-insert the push-pull rod into the push-pull hole, and then the third cylinder retracts to pull the trolley out of the magnetizing coil. If the third cylinder is damaged, the trolley can also be pushed or pulled using the handle.

[0013] Preferably, the blocking mechanism includes a fifth cylinder mounted on a support beam on the side away from the second housing. The telescopic end of the fifth cylinder is connected to a lifting plate. A connecting seat is fixed on the lifting plate. A transition block is pivotally connected to the connecting seat. A roller is pivotally connected to the upper end of the transition block. A push rod is threadedly connected to the lifting plate. Twisting the push rod allows its upper end to contact the bottom surface of the transition block away from the roller. The retraction of the fifth cylinder allows the roller to be located below the mounting plate to prevent the roller from affecting the movement of the moving trolley.

[0014] In the above technical solution, after the moving trolley enters the magnetizing coil, the two electrode chucks clamp the workpiece to be tested. At this time, the fifth cylinder is extended to drive the lifting plate to rise. Then, the push rod is rotated to raise the push rod and push the adapter block through the push rod, so that the roller presses on the push-pull block, thereby restricting the movement of the moving trolley and preventing the electrode chucks from becoming unstable due to the shaking of the moving trolley.

[0015] Preferably, the mobile trolley has several seepage holes, a liquid collection hopper is installed in the upper part of the first box, and a drain pipe is connected to the lower end of the liquid collection hopper.

[0016] In the above technical solution, the magnetic suspension sprayed by the spray system enters the collection hopper through the seepage holes and is then discharged through the drain pipe. Additionally, each drain pipe is equipped with a control valve to control its opening and closing. The lower end of the drain pipe needs to be connected to wastewater treatment equipment to treat the discharged wastewater.

[0017] Preferably, the second cylinder, the fourth cylinder, and the fifth cylinder are all surrounded by a third protective cover.

[0018] The above technical solution reduces the operation of the magnetic suspension fluid on the second, fourth, and fifth cylinders through the third protective cover. In addition, bellows can be installed around the piston rod of all cylinders. The bellows can fold and unfold with the movement of the piston rod, thus protecting the piston rod.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] (1) The workpiece to be tested is placed on a mobile trolley. Magnetic suspension liquid is sprayed onto the workpiece through a spray system. Then, the mobile trolley is pushed into the magnetization coil through a push-pull mechanism. The workpiece is clamped at both ends by electrode clamps at both ends. The electrode clamps and the magnetization coil are energized. The workpiece is magnetized through the magnetization coil and the electrode clamps. After magnetization is completed, the mobile trolley is pulled out of the magnetization coil through the push-pull mechanism. The workpiece is then irradiated with a handheld LED ultraviolet lamp to detect defects in the workpiece.

[0021] (2) After the moving trolley enters the magnetizing coil, the blocking mechanism can hold the moving trolley in place, so that the electrode chuck on the second cylinder presses the workpiece tightly against the electrode chuck on the first cylinder, preventing the electrode chuck from loosening due to the displacement of the moving trolley. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model;

[0023] Figure 2 for Figure 1 A magnified view of a portion of the image;

[0024] Figure 3 This is a schematic diagram of the moving trolley and the push-pull mechanism;

[0025] Figure 4 This is a schematic diagram of the second protective shield;

[0026] Figure 5 This is a front sectional view of the present invention;

[0027] In the diagram: 1-First housing, 2-Second housing, 3-Guide rod, 4-Mobile trolley, 5-Spraying system, 501-Storage tank, 502-Pump body, 503-Discharge pipe, 504-Main pipe, 505-Branch pipe, 506-Spray nozzle, 6-Support beam, 7-Magnetizing coil, 701-First coil, 702-Second coil, 8-Push-pull mechanism, 801-Third cylinder, 802-Adapter plate, 803-Fourth cylinder, 8 04-Push-pull rod, 805-Push-pull block, 806-Push-pull hole, 807-Second protective cover, 9-First cylinder, 10-Mounting plate, 11-Second cylinder, 12-Electrode clamp, 13-Blocking mechanism, 1301-Fifth cylinder, 1302-Lifting plate, 1303-Connecting seat, 1304-Adapter block, 1305-Roller, 1306-Top rod, 14-First protective cover, 15-Handrail, 16-Collection hopper. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] Please see Figures 1-5A wet magnetic particle flaw detector includes a first housing 1 and a second housing 2 arranged side by side. Two parallel guide rods 3 are fixed inside the first housing 1. One end of the two guide rods 3 is connected to the outer wall of the second housing 2. A moving trolley 4 is slidably connected to the two guide rods 3. A spray system 5 is provided at the end of the first housing 1 away from the second housing. The spraying end of the spray system 5 is located above the moving trolley 4. Specifically, the spray system 5 includes a liquid storage tank 501 located in the lower part of the second housing. A pump body 502 is installed on the outside of the liquid storage tank 501. The inlet end of the pump body 502 is connected to the liquid storage tank 501 via a pipe, and the outlet end of the pump body 502 is connected to an outlet pipe 503. A main pipe 504 is connected to the outlet pipe 503, and several parallel branch pipes 505 are connected to one side of the main pipe 504. All branch pipes 505 are located above the first housing 1. Several spray pipes 506 are installed on the bottom surface of the branch pipes 505, and nozzles are installed at the lower end of the spray pipes 506. When the pump body 502 operates, it delivers the magnetic suspension liquid in the liquid storage tank 501 to the outlet pipe 503, and then sprays it onto the workpiece to be inspected on the moving trolley 4 through the main pipe 504, branch pipes 505, and nozzles. In addition, an injection pipe is connected to the upper part of the liquid storage tank 501, which facilitates the addition of magnetic suspension liquid into the liquid storage tank 501. A stirring mechanism is also required inside the storage tank to agitate the magnetic suspension. A solenoid valve is installed on the outlet pipe 503 to control the opening and closing of the outlet pipe.

[0031] Two support beams 6 are installed inside the first housing 1 near the second housing. Magnetizing coils 7 are mounted on both support beams 6. Two guide rods 3 are located inside the magnetizing coils 7. A push-pull mechanism 8 is installed on the outer side of the first housing 1 away from the second housing. The push-pull mechanism 8 pushes and pulls the moving trolley 4 to allow it to enter and exit the magnetizing coils 7. The magnetizing coils 7 include multiple sets of rectangular and parallel first coils 701. All four sides of the first coils 701 are connected by second coils 702. A first protective cover 14 is also installed on the support beams 6, and the magnetizing coils 7 are located inside the first protective cover 14. A circumferential magnetic field is generated by the parallel and rectangular first coils 701 and the second coils 702 perpendicular to the first coils, enabling comprehensive non-contact magnetization of the workpiece being inspected. The first protective cover 14 protects the magnetizing coils 7.

[0032] The push-pull mechanism 8 includes a third cylinder 801 installed on the outer wall of the first housing away from the second housing. The telescopic end of the third cylinder 801 is connected to a transition plate 802. A fourth cylinder 803 is installed on the transition plate 802. The telescopic end of the fourth cylinder 803 is connected to a push-pull rod 804. A push-pull block 805 is connected to the lower part of the mounting plate 10. The push-pull block 805 has a push-pull hole 806 that matches the push-pull rod. A second protective cover 807 is installed on the inner wall of the first housing 1 near the third cylinder. The bottom of the second protective cover 807 and the side facing the second housing are open so that the third cylinder 801 can enter the second protective cover 807. The end of the moving trolley 4 away from the second housing is also connected to an upwardly inclined handrail 15. When the trolley is to be pushed, the third cylinder 801 is extended, causing the adapter plate 802 to move towards the trolley 4. When the push-pull rod 804 reaches above the push-pull hole 806, the fourth cylinder 803 extends, causing the push-pull rod 804 to descend and insert into the push-pull hole 806. Then, the third cylinder 801 continues to extend, pushing the trolley 4 into the magnetizing coil 7. Then, the fourth cylinder 803 retracts, causing the push-pull rod 804 to leave the push-pull hole 806. The third cylinder 801 retracts, returning to the second protective cover 807, reducing the amount of magnetic suspension sprayed onto the third cylinder 801 and maximizing its protection. When the trolley 4 is to be pulled out of the magnetizing coil 7, the push-pull rod 704 is reinserted into the push-pull hole 806 using the above method, and the third cylinder 801 is then retracted to pull the trolley 4 out of the magnetizing coil 7. When the third cylinder 801 is damaged, the trolley can also be moved by pushing or pulling with the handle 15.

[0033] Additionally, a distance sensor can be installed on the end face of the adapter plate 802 facing the mounting plate 10. When the distance between the distance sensor and the mounting plate 10 reaches a set value, it indicates that the push-pull rod 804 is above and aligned with the push-pull hole 806. Furthermore, the stroke of the fourth cylinder 803 can be set so that each movement of the fourth cylinder 803 causes the push-pull rod 804 to enter or leave the push-pull hole 806.

[0034] A first cylinder 9 is installed in the upper part of the second housing 2. A mounting plate 10 is connected to one end of the moving trolley 4. A second cylinder 11, opposite to the first cylinder, is installed on the mounting plate 10. Electrode chucks 12 are connected to the opposite ends of the first cylinder 9 and the second cylinder 11. The electrode chuck 12 on the first cylinder 9 is located inside the magnetizing coil 7. The workpiece is clamped at both ends by the electrode chucks 12, and the electrode chucks 12 and the magnetizing coil 7 are energized. The workpiece is magnetized in all directions by the magnetizing coil 7 and the electrode chucks 12.

[0035] The mobile trolley 4 has several seepage holes. A collection hopper 16 is installed in the upper part of the first housing 1, and a drain pipe is connected to the lower end of the collection hopper. The magnetic suspension sprayed by the spray system 5 enters the collection hopper 16 through the seepage holes and is then discharged through the drain pipe. In addition, a control valve is installed on each drain pipe to control the opening and closing of the drain pipe. The lower end of the drain pipe needs to be connected to sewage treatment equipment to treat the discharged sewage. The second cylinder 11, the fourth cylinder 803, and the fifth cylinder 1301 are all covered with a third protective cover. The third protective cover can reduce the operation of the magnetic suspension on the second, fourth, and fifth cylinders. In addition, a bellows can be installed around the piston rod of all cylinders. The bellows can fold and unfold with the movement of the piston rod, and the bellows protect the piston rod.

[0036] The working principle of this embodiment is as follows:

[0037] The workpiece to be inspected is placed on the moving trolley 4. First, magnetic suspension liquid is sprayed onto the workpiece through the spray system 5. At this time, the fourth cylinder 803 is located inside the second protective cover 807 to prevent the magnetic suspension liquid from spraying onto the third cylinder 801. After the magnetic suspension liquid is sprayed, the third cylinder 801 is extended, driving the adapter plate 802 to move towards the moving trolley 4. When the push-pull rod 804 reaches above the push-pull hole 806, the fourth cylinder 803 extends, driving the push-pull rod 804 to descend and insert into the push-pull hole 806. Then, the third cylinder 801 continues to extend, pushing the moving trolley 4 into the magnetizing coil 7. Then, the fourth cylinder 803 retracts, causing the push-pull rod 804 to leave the push-pull hole 806, and the third cylinder 801 retracts, returning to the second protective cover 807. At this time, the electrode chuck 12 on the first cylinder 9 and the electrode chuck 12 on the second cylinder 11 clamp the workpiece. The electrode chuck 12 and the magnetizing coil 7 are energized, and the workpiece is magnetized through the magnetizing coil 7 and the electrode chuck 12. After the magnetization is completed, the moving carriage 4 is pulled out of the magnetizing coil through the push-pull mechanism 8, and the workpiece is irradiated with a handheld LED ultraviolet lamp to realize the detection of workpiece defects.

[0038] In this embodiment, both the first and second boxes are made of stainless steel, and all steel structures and components are treated with anti-corrosion measures.

[0039] Example 2

[0040] Based on Embodiment 1, a blocking mechanism 13 is connected to the support beam 6 at the end away from the second box. When the moving trolley 4 enters the magnetization coil 7, the blocking mechanism 13 blocks the moving trolley 4, keeping the position of the moving trolley 4 stable. The blocking mechanism 13 includes a fifth cylinder 1301 mounted on a support beam on the side away from the second housing. The telescopic end of the fifth cylinder 1301 is connected to a lifting plate 1302. A connecting seat 1303 is fixed on the lifting plate 1302. A transition block 1304 is pivotally connected to the connecting seat 1303. A roller 1305 is pivotally connected to the upper end of the transition block 1304. A push rod 1306 is threadedly connected to the lifting plate 1302. Twisting the push rod 1306 will make its upper end contact the bottom surface of the transition block 1304 away from the roller. The retraction of the fifth cylinder 1301 will make the roller 1305 located below the mounting plate 10, preventing the roller from obstructing the movement of the moving trolley, so that the moving trolley can smoothly enter and exit the magnetizing coil 7.

[0041] When the moving carriage 4 is pushed into the magnetizing coil 7 by the push-pull mechanism 8, and the workpiece to be tested is clamped by the two electrode chucks 12, the fifth cylinder 1301 is extended, driving the lifting plate 1302 to rise. Then, the top rod 1306 is turned, causing it to rise and push the adapter block 1304, so that the roller 1305 presses against the push-pull block 805, thereby restricting the movement of the moving carriage 4 and preventing the electrode chucks from becoming unstable due to the shaking of the moving carriage. After magnetization is completed, the fifth cylinder retracts, causing the roller to descend below the moving carriage.

[0042] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, workpiece, 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 a process, method, workpiece, or apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, workpiece, or apparatus that includes said element.

[0043] 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 wet magnetic particle inspection machine, characterized in that: The first box (1) and the second box (2) are arranged side by side. Two parallel guide rods (3) are fixed inside the first box (1). One end of the two guide rods (3) is connected to the outer wall of the second box (2). A trolley (4) is slidably connected to the two guide rods (3). A spray system (5) is provided at the end of the first box (1) away from the second box. The spray end of the spray system (5) is located above the trolley (4). A support beam (6) is installed inside the first box (1) near the second box. A magnetizing coil (7) is installed on the support beam (6). The two guide rods (3) are located inside the magnetizing coil (7). A push-pull mechanism (8) is installed on the outer side of the first box (1) away from the second box. The trolley (4) is pushed and pulled by the push-pull mechanism (8) so that the trolley (4) can enter and exit the magnetizing coil (7). A first cylinder (9) is installed in the upper part of the second housing (2). One end of the moving trolley (4) is connected to a mounting plate (10). A second cylinder (11) opposite to the first cylinder is installed on the mounting plate (10). Electrode clamps (12) are connected to the opposite ends of the first cylinder (9) and the second cylinder (11). The electrode clamps (12) on the first cylinder (9) are located inside the magnetizing coil (7). A blocking mechanism (13) is connected to the support beam (6) away from the second housing. When the moving trolley (4) enters the magnetizing coil (7), the blocking mechanism (13) blocks the moving trolley (4) so ​​that the position of the moving trolley (4) remains stable.

2. The wet magnetic particle inspection machine according to claim 1, characterized in that: The spray system (5) includes a liquid storage tank (501) located in the lower part of the second box. A pump body (502) is installed on the outside of the liquid storage tank (501). The inlet end of the pump body (502) is connected to the liquid storage tank (501) through a pipe. The outlet end of the pump body (502) is connected to an outlet pipe (503). A main pipe (504) is connected to the outlet pipe (503). Several parallel branch pipes (505) are connected to one side of the main pipe (504). All branch pipes (505) are located above the first box (1). Several spray pipes (506) are installed on the bottom surface of the branch pipes (505). A nozzle is installed at the lower end of the spray pipes (506).

3. A wet magnetic particle inspection machine according to claim 2, characterized in that: The magnetizing coil (7) includes multiple sets of rectangular and parallel first coils (701), the four sides of which are connected by second coils (702). A first protective cover (14) is also installed on the support beam (6), and the magnetizing coil (7) is located inside the first protective cover (14).

4. A wet magnetic particle inspection machine according to claim 3, characterized in that: The push-pull mechanism (8) includes a third cylinder (801) installed on the outer wall of the first housing away from the second housing. The telescopic end of the third cylinder (801) is connected to a transition plate (802). A fourth cylinder (803) is installed on the transition plate (802). The telescopic end of the fourth cylinder (803) is connected to a push-pull rod (804). A push-pull block (805) is connected to the lower part of the mounting plate (10). A push-pull hole (806) matching the push-pull rod is opened on the push-pull block (805). A second protective cover (807) is installed on the inner wall of the first housing (1) near the third cylinder. The bottom of the second protective cover (807) and the side facing the second housing are open so that the third cylinder (801) can enter the second protective cover (807). The end of the moving trolley (4) away from the second housing is also connected to an upwardly inclined handrail (15).

5. A wet magnetic particle inspection machine according to claim 4, characterized in that: The blocking mechanism (13) includes a fifth cylinder (1301) mounted on a support beam on the side away from the second housing. The telescopic end of the fifth cylinder (1301) is connected to a lifting plate (1302). A connecting seat (1303) is fixed on the lifting plate (1302). A transition block (1304) is pivotally connected to the connecting seat (1303). A roller (1305) is pivotally connected to the upper end of the transition block (1304). A push rod (1306) is threaded onto the lifting plate (1302). Twisting the push rod (1306) will make its upper end contact the bottom surface of the transition block (1304) away from the roller. The retraction of the fifth cylinder (1301) will make the roller (1305) located below the mounting plate (10).

6. A wet magnetic particle inspection machine according to claim 5, characterized in that: The mobile trolley (4) has several seepage holes, and a liquid collection hopper (16) is installed in the upper part of the first box (1), with a drain pipe connected to the lower end of the liquid collection hopper.

7. A wet magnetic particle inspection machine according to claim 6, characterized in that: The second cylinder (11), the fourth cylinder (803), and the fifth cylinder (1301) are all surrounded by a third protective cover.

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