Magnetic suspension spraying device of magnetic particle flaw detector

Abstract

The utility model relates to the technical field of flaw detectors, and particularly discloses a magnetic suspension spraying device of a magnetic particle flaw detector, which comprises a base station, and a connecting bracket is arranged at the bottom of the base station; a sliding groove is formed in the top of the base table, a matching block is arranged in the sliding groove in a sliding mode and fixedly connected with a movable disc arranged at the upper end of the base table, and a spring reset piece used for supporting the matching block is arranged in the sliding groove. A cam structure used for pushing the movable disc to shake in a reciprocating mode is arranged on one side of the movable disc, a spraying rod is arranged on the other side of the movable disc, and the spraying rod is detachably connected with the movable disc through a fastener. In the spraying process, a cam structure pushes a movable disc to shake in a reciprocating mode, a matching block at the bottom of the movable disc slides along a sliding groove, a spring reset piece supports the matching block, when the movable disc shakes, a spraying rod shakes along with the movable disc, and through horizontal shaking of the spraying rod, the magnetic suspension can cover the surface of a detected object more comprehensively and evenly, so that the detection accuracy is improved. And the detection accuracy and reliability are improved.

Description

Technical Field

[0001] This utility model relates to the field of flaw detector technology, and in particular to a magnetic suspension spraying device for a magnetic particle flaw detector. Background Technology

[0002] Magnetic flaw detection is widely used in the field of rail transit metal castings. Its principle is based on the fact that when a casting is magnetized, internal defects distort the magnetic field lines, generating a leakage magnetic field at the defect location. This attracts magnetic powder, revealing the defect shape. This flaw detection method can efficiently detect surface and near-surface defects such as cracks and porosity in rail transit metal castings. Because rail transit has extremely high safety requirements, the quality of metal castings is crucial. Magnetic flaw detection can promptly identify potential problems during the manufacturing process, preventing defective castings from being put into use, ensuring the safe and stable operation of rail transit vehicles, and reducing the risk of accidents.

[0003] Patent application number CN202321466535.9 discloses a magnetic particle flaw detector for a balanced beam, relating to the field of railway non-destructive testing technology. It includes a flaw detector body and a bottom frame, with the flaw detector body fixedly mounted on the upper part of the bottom frame. A conical recovery hopper is located on the inner side of the bottom frame. This technical solution utilizes a parallel-moving manipulator at the upper end of the track frame for automatic telescopic gripping. When the parallel-moving track frame moves to the workpiece support bracket, the workpiece support bracket is raised, allowing the workpiece holders at both ends of the flaw detector body to easily clamp and fix the balanced beam workpiece. The flaw detector body then effectively detects the balanced beam workpiece using a magnetic suspension spray structure and a flaw detection light source. However, because the spray pipes on the magnetic suspension spray structure are located above the frame and are often installed in a fixed manner, the spray pipes are often stationary during magnetic suspension spraying. This can lead to some areas having excessive magnetic suspension while others have insufficient, affecting the detection effect. Utility Model Content

[0004] To address the aforementioned problems, this invention proposes a magnetic suspension spraying device for a magnetic particle flaw detector, thereby overcoming the shortcomings of existing methods.

[0005] To achieve the purpose of this utility model, the utility model is implemented through the following technical solution: a magnetic suspension spraying device for a magnetic particle flaw detector, including a base, and a connecting bracket is provided at the bottom of the base;

[0006] A sliding groove is provided on the top of the base, and a mating block is slidably arranged in the sliding groove. The mating block is fixedly connected to the movable disk located at the upper end of the base. A spring return member is provided in the sliding groove to support the mating block.

[0007] The movable disc has a cam structure on one side for pushing it to swing back and forth, and a spray bar on the other side. The spray bar has multiple nozzles on its outer side. The upper end of the movable disc has a fastener, and the spray bar is detachably connected to the movable disc through the fastener.

[0008] A further improvement is that the connecting bracket includes multiple support plates, each support plate is fixedly installed on each corner of the base, and multiple connecting holes are opened on the outer side of the support plate, with each connecting hole evenly arranged in the direction of the height of the support plate.

[0009] A further improvement is that the spring reset component includes a limiting rod and a spring. The limiting rod is fixedly installed inside the slide groove, and the spring is sleeved on the outside of the limiting rod. One end of the spring is fixedly connected to the mating block, and the other end of the spring is fixedly installed on the inner wall of the slide groove.

[0010] A further improvement is that the cam structure includes a cam and a motor. The cam is rotatably mounted on the upper part of the base, and the motor is fixedly mounted on the lower part of the base. The output end of the motor is fixedly connected to the cam. The edge of the cam is provided with a boss, and the cam contacts the movable disk.

[0011] A further improvement is that the fastener includes a connecting post and a threaded seat. The threaded seat is fixedly mounted on the upper end of the movable disc. A positioning bolt is threadedly connected to the upper end of the threaded seat. One end of the connecting post is fixedly connected to the spray rod, and the other end of the connecting post is inserted into the mounting hole opened on the outside of the threaded seat. The positioning bolt is screwed into the mounting hole and threadedly connected to the positioning hole opened on the outside of the connecting post.

[0012] A further improvement is that: a dust cover is provided at the upper end of the base, and a bolt plate is provided at the edge of the dust cover. The bolt plate is fixedly connected to the dust cover, and a fixing bolt is installed on the bolt plate. The fixing bolt is threadedly connected to a bolt hole opened on the outside of the base. A through hole is opened on the outside of the dust cover to allow the spray rod to pass through.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] During the spraying process, the cam structure drives the movable disk to oscillate back and forth. The mating block at the bottom of the movable disk slides along the slide groove, and the spring reset component supports the mating block. When the movable disk oscillates, the spraying rod also oscillates. Through the horizontal oscillation of the spraying rod, the magnetic suspension can more comprehensively and evenly cover the surface of the object being tested, improving the accuracy and reliability of the test. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a structural diagram of the base in this utility model.

[0017] Figure 2 This is a structural diagram of the connecting column in this utility model.

[0018] Figure 3 This is a structural diagram of the movable disc in this utility model.

[0019] Figure 4 This is a structural diagram of the limiting rod in this utility model.

[0020] The components include: 1. base; 2. dust cover; 3. bolt plate; 4. fixing bolt; 5. support plate; 6. through hole; 7. spray bar; 8. connecting column; 9. positioning hole; 10. motor; 11. cam; 12. movable plate; 13. threaded seat; 14. positioning bolt; 15. slide groove; 16. limit rod; 17. mating block; 18. spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0022] according to Figure 1 , 2 As shown in Figures 3 and 4, this embodiment proposes a magnetic suspension spraying device for a magnetic particle flaw detector, including a base 1, and a connecting bracket is provided at the bottom of the base 1.

[0023] A sliding groove 15 is provided on the top of the base 1, and a mating block 17 is slidably disposed in the sliding groove 15. The mating block 17 is fixedly connected to the movable disk 12 located at the upper end of the base 1. A spring return member for supporting the mating block 17 is provided in the sliding groove 15.

[0024] The movable disc 12 has a cam structure on one side for pushing the movable disc 12 to swing back and forth, and a spray rod 7 on the other side of the movable disc 12. The spray rod 7 has multiple nozzles on its outer side. The upper end of the movable disc 12 has a fastener. The spray rod 7 is detachably connected to the movable disc 12 through the fastener.

[0025] The base 1 is fixedly installed on one side of the frame of the magnetic particle inspection machine by a connecting bracket. The spray rod 7 is suspended above and below the conveyor table. When the casting passes the conveyor table, the external pump draws the magnetic suspension liquid into the spray rod 7 through the pipeline. The magnetic suspension liquid is sprayed out through the nozzle on the outside of the spray rod 7 and wraps around the surface of the casting.

[0026] During the spraying process, the cam structure pushes the movable disk 12 to oscillate back and forth. The mating block 17 at the bottom of the movable disk 12 slides along the slide groove 15. The spring reset component supports the mating block 17. The movable disk 12 is fixed to the spray rod 7 by fasteners. When the movable disk 12 oscillates, the spray rod 7 also oscillates. Through the horizontal oscillation of the spray rod 7, the magnetic suspension can more comprehensively and evenly cover the surface of the object being tested, improving the accuracy and reliability of the test.

[0027] The connecting bracket includes multiple support plates 5, each fixedly mounted on a corner of the base 1. Multiple connection holes are provided on the outer side of each support plate 5, evenly distributed along its height. The connecting bracket supports the base 1, and the support plates 5 can be fixed to the external frame using bolts. The evenly distributed support plates 5 facilitate adjustment of the base 1's height by operators, improving the flexibility of the spray bar 7's position.

[0028] The spring reset component serves to support and reset the movable disk 12. Specifically, the spring reset component includes a limiting rod 16 and a spring 18. The limiting rod 16 is fixedly disposed inside the slide groove 15, and the spring 18 is sleeved on the outside of the limiting rod 16. One end of the spring 18 is fixedly connected to the mating block 17, and the other end of the spring 18 is fixedly disposed on the inner wall of the slide groove 15. When the movable disk 12 is pushed by the cam structure, the mating block 17 fixed at the lower end of the movable disk 12 will also move accordingly. The slide groove 15 limits the movement of the mating block 17, and the limiting rod 16 guides the mating block 17 by cooperating with it, so that the mating block 17 will not wobble during sliding, thereby improving the stability of the movable disk 12.

[0029] The cam structure works in conjunction with the spring return mechanism. Specifically, the cam structure includes a cam 11 and a motor 10. The cam 11 is rotatably mounted on the upper end of the base 1, and the motor 10 is fixedly mounted on the lower end of the base 1. The output end of the motor 10 is fixedly connected to the cam 11. The edge of the cam 11 has a boss, and the cam 11 contacts the movable disk 12. Under the push of the spring return mechanism, the movable disk 12 and the cam 11 are in a continuously close contact state. Specifically, when the motor 10 starts, the motor 10 drives the cam 11 to rotate. During the rotation of the cam 11, the boss at its end pushes the movable disk 12. The movable disk 12 drives the mating block 17 to slide along the slide groove 15. During the sliding of the mating block 17, the spring 18 is compressed. When the boss is no longer in contact with the movable disk 12, the spring 18 pushes the mating block 17 to return the movable disk 12 to its original position, thus realizing the reciprocating oscillation of the spray bar 7.

[0030] The detachable installation method facilitates the replacement of the spray rod 7. Specifically, the fasteners include a connecting post 8 and a threaded seat 13. The threaded seat 13 is fixedly mounted on the upper end of the movable disc 12, and a positioning bolt 14 is threadedly connected to the upper end of the threaded seat 13. One end of the connecting post 8 is fixedly connected to the spray rod 7, and the other end of the connecting post 8 is inserted into the mounting hole on the outside of the threaded seat 13. The positioning bolt 14 is screwed into the mounting hole and threadedly connected to the positioning hole 9 on the outside of the connecting post 8. When replacing the spray rod 7, simply rotate the positioning bolt 14 to unscrew the threaded seat 13 from the positioning hole 9 at the top of the connecting post 8, and then pull the connecting post 8 out of the mounting hole on the threaded seat 13. Replacement is convenient and quick.

[0031] To prevent external dust from settling on the movable disc 12 and the cam structure and affecting their normal operation, in a preferred embodiment, a dust cover 2 is provided on the upper end of the base 1. A bolt plate 3 is provided along the edge of the dust cover 2, and the bolt plate 3 is fixedly connected to the dust cover 2. A fixing bolt 4 is mounted on the bolt plate 3, and the fixing bolt 4 is threaded into a bolt hole on the outer side of the base 1. A through hole 6 is provided on the outer side of the dust cover 2 to allow the spray rod 7 to pass through. In addition to its dustproof function, the dust cover 2 also reduces the risk of accidental contact by personnel. The detachable connection of the dust cover 2 facilitates maintenance of the movable disc 12 and the cam structure.

[0032] How this application works:

[0033] The base 1 is fixedly mounted on one side of the magnetic particle inspection machine frame via a connecting bracket. The spray rod 7 is suspended above and below the conveyor table. When the casting passes the conveyor table, an external pump draws magnetic suspension liquid into the spray rod 7 through a pipe. The magnetic suspension liquid is sprayed out through the connecting column 8 on the outside of the spray rod 7, covering the surface of the casting. During the spraying process, the cam structure pushes the movable disk 12 to reciprocate. The mating block 17 at the bottom of the movable disk 12 slides along the slide groove 15. The spring reset component supports the mating block 17. The movable disk 12 is fixed to the spray rod 7 by fasteners. When the movable disk 12 shakes, the spray rod 7 also shakes. Through the horizontal shaking of the spray rod 7, the magnetic suspension liquid can more comprehensively and evenly cover the surface of the object being inspected, improving the accuracy and reliability of the inspection.

[0034] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0035] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A magnetic particle flaw detector magnetic suspension spray device, comprising a base (1), the bottom of the base (1) is provided with a connecting bracket, Its characteristics are: The base (1) has a sliding groove (15) on its top. A mating block (17) is slidably disposed in the sliding groove (15). The mating block (17) is fixedly connected to the movable disk (12) located at the upper end of the base (1). A spring return member for supporting the mating block (17) is provided in the sliding groove (15). The movable disk (12) has a cam structure on one side for pushing the movable disk (12) to swing back and forth, and a spray rod (7) on the other side of the movable disk (12). The spray rod (7) has multiple nozzles on its outer side. The upper end of the movable disk (12) is provided with a fastener. The spray rod (7) is detachably connected to the movable disk (12) through the fastener.

2. The magnetic suspension spray device of a magnetic particle flaw detector according to claim 1, characterized in that: The connecting bracket includes multiple support plates (5), each of the support plates (5) is fixedly installed on each corner of the base (1), and multiple connecting holes are opened on the outer side of the support plate (5), and each of the connecting holes is evenly arranged in the direction of the height of the support plate (5).

3. The magnetic suspension spray device of a magnetic particle flaw detector according to claim 1, characterized in that: The spring reset component includes a limiting rod (16) and a spring (18). The limiting rod (16) is fixedly disposed inside the slide groove (15), and the spring (18) is sleeved on the outside of the limiting rod (16). One end of the spring (18) is fixedly connected to the mating block (17), and the other end of the spring (18) is fixedly disposed on the inner wall of the slide groove (15).

4. The magnetic suspension spray device of claim 1, wherein: The cam structure includes a cam (11) and a motor (10). The cam (11) is rotatably mounted on the upper end of the base (1), and the motor (10) is fixedly mounted on the lower end of the base (1). The output end of the motor (10) is fixedly connected to the cam (11). The edge of the cam (11) is provided with a boss, and the cam (11) contacts the movable disk (12).

5. The magnetic suspension spraying device for a magnetic particle flaw detector according to claim 1, characterized in that: The fastener includes a connecting post (8) and a threaded seat (13). The threaded seat (13) is fixedly disposed on the upper end of the movable disc (12). A positioning bolt (14) is threadedly connected to the upper end of the threaded seat (13). One end of the connecting post (8) is fixedly connected to the spray rod (7). The other end of the connecting post (8) is inserted into the mounting hole opened on the outside of the threaded seat (13). The positioning bolt (14) is screwed into the mounting hole and threadedly connected to the positioning hole (9) opened on the outside of the connecting post (8).

6. The magnetic suspension spray device of claim 1, wherein: The upper end of the base (1) is provided with a dust cover (2), and the edge of the dust cover (2) is provided with a bolt plate (3). The bolt plate (3) is fixedly connected to the dust cover (2). A fixing bolt (4) is assembled on the bolt plate (3). The fixing bolt (4) is threadedly connected to a bolt hole opened on the outside of the base (1). A through hole (6) is opened on the outside of the dust cover (2) to allow the spray rod (7) to pass through.

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