A relay magnetic characteristic detection device

Abstract

The application relates to a relay magnetic characteristic detection device, belonging to the relay technical field, which comprises a magnetic flux meter and a detection tool, the detection tool comprises a bottom plate, a coil excitation assembly and a fixture assembly, the coil excitation assembly is fixedly connected with the bottom plate through a coil mounting frame, the fixture assembly is slidably connected with the bottom plate through a sliding block, the sliding block drives the fixture assembly to make a workpiece to be detected to enter and exit the coil excitation assembly, the coil excitation assembly is detachably connected with the coil mounting frame, and the fixture assembly is detachably connected with the sliding block. The relay electromagnetic characteristic detection device is characterized in that the coil excitation assembly is detachably connected with the bottom plate, the fixture assembly is slidably connected with the bottom plate through the sliding block, the workpiece to be detected is driven by the fixture assembly to enter and exit the coil excitation assembly, so that the workpiece to be detected is in a detectable state. Since the coil excitation assembly and the fixture assembly can be replaced according to different workpieces to be detected, and the depth of the workpiece to be detected inserted into the excitation coil is controllable each time, the operation is flexible, and the measurement result is more accurate.

Description

Technical Field

[0001] This invention relates to the field of relay technology, and more specifically to a relay magnetic characteristic detection device. Background Technology

[0002] Relays are important electrical components in the field of low-voltage electrical appliances, widely used in electrical control and safety protection of power systems. Therefore, their reliability is crucial to the safe and stable operation of the entire system. To ensure reliable relay operation, during the relay manufacturing process, the armature, yoke, and core of the relay are magnetized and their magnetic properties are measured to determine whether these components are qualified.

[0003] The existing method for measuring the magnetic characteristics of the armature, yoke, and core of a relay involves manually inserting the component under test into the coil. During testing, the coil is not fixed to the test bench but rests on it, causing frequent contact between the coil and the test bench, which can easily damage it. Furthermore, manually inserting the component into the coil makes it impossible to accurately control the insertion depth each time, resulting in inaccurate test values ​​and making it impossible to accurately determine whether the component is qualified. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the present invention proposes a relay magnetic characteristic detection device.

[0005] The technical solution of the present invention is as follows:

[0006] A relay magnetic characteristic detection device includes a fluxmeter and a detection fixture. The detection fixture includes a base plate, a coil excitation assembly, and a clamping assembly. The coil excitation assembly is fixedly connected to the base plate through a coil mounting bracket. The clamping assembly is slidably connected to the base plate through a slider. The slider drives the clamping assembly to move the workpiece to be tested into and out of the coil excitation assembly.

[0007] The coil excitation assembly is detachably connected to the coil mounting bracket, and the clamp assembly is detachably connected to the slider.

[0008] Furthermore, a sliding groove is provided on the base plate, through which the slider is slidably connected to the base plate.

[0009] Furthermore, the coil excitation assembly is a yoke coil excitation assembly, including a yoke coil outer cover and a yoke excitation coil, wherein the yoke excitation coil is disposed inside the yoke coil outer cover, and the yoke coil outer cover is disposed inside the coil mounting frame.

[0010] Furthermore, the clamping assembly is a yoke clamping assembly, including a yoke mounting bracket and a yoke mounting base. The yoke mounting bracket is fixedly disposed on the side of the yoke mounting base away from the yoke coil excitation assembly, and the bottom of the yoke mounting bracket is movably connected to the first mounting groove at the upper end of the slider.

[0011] Furthermore, the bottom of the yoke mounting base is provided with an adjustment hole, and a limiting hole perpendicular to and through the adjustment hole is provided on the side of the yoke mounting base. The yoke adjusting rod is inserted into the adjustment hole. The yoke adjusting rod includes a first base that is not completely circular, a second base that is circular, and an adjusting rod. The first base is smoothly transitioned onto the second base. The upper end of the adjusting rod is provided with an annular groove. A boss is provided at the end of the adjustment hole near the slider. The end faces of the first base and the second base switch contact with the boss as the yoke adjusting rod rotates. A top post, a compression spring, and a top screw are sequentially installed in the limiting hole. The top post is located in the annular groove, and the top screw is threadedly connected to the limiting hole.

[0012] Furthermore, the coil excitation assembly is an armature coil excitation assembly, including an armature coil outer cover and an armature excitation coil, wherein the armature excitation coil is disposed inside the armature coil outer cover, and the armature coil outer cover is disposed inside the coil mounting frame.

[0013] Furthermore, the clamping assembly is an armature clamping assembly, including an armature mounting base. An armature mounting groove is provided on the side of the armature mounting base away from the armature coil excitation assembly. The armature fastening pin passes through the armature mounting baffle to fix the armature to be tested in the armature mounting groove.

[0014] Furthermore, the coil excitation assembly is an iron core coil excitation assembly, including an iron core coil outer cover and an iron core excitation coil, with the iron core excitation coil disposed inside the iron core coil outer cover, and the iron core coil outer cover disposed inside the coil mounting frame.

[0015] Furthermore, the clamping assembly is a core clamping assembly, including a core mounting base and a core mounting base rear baffle. The core mounting base rear baffle is fixedly connected to the core mounting base. A receiving cavity is provided between the upper opposing contact surfaces of the core mounting base and the core mounting base rear baffle. The head of the core fastening nail is located in the receiving cavity. The square end of the core fastening nail passes through the core mounting base rear baffle at the receiving cavity and is connected in sequence to a locking handle with a square hole in the center and a pressure block. The core fastening nail is threadedly connected to the core mounting base rear baffle, and the pressure block is fixedly connected to the end of the core fastening nail by screws.

[0016] Furthermore, the coil mounting bracket includes a U-shaped coil mounting bracket base, and a second mounting groove is provided at a relative position within the U-shaped opening of the coil mounting bracket base. A coil mounting bracket clamping plate and a coil mounting bracket clamping rubber are provided in the second mounting groove. The slider includes a slider base, and a first mounting groove is opened on the upper end face of the slider base. A slider rear clamping plate and a slider clamping rubber are provided in the first mounting groove. A sliding key is provided at the bottom end of the slider base, and the sliding key is slidably disposed in and passes through the sliding groove.

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] 1. The relay electromagnetic characteristic testing device proposed in this invention has a coil excitation assembly detachably connected to a base plate, and a clamp assembly slidably connected to the base plate via a slider. The clamp assembly drives the workpiece to be tested into and out of the coil excitation assembly, thereby putting the workpiece to be tested into a testable state. Since the coil excitation assembly and the clamp assembly can be replaced according to different workpieces to be tested, the operation is simpler and more flexible.

[0019] 2. The relay electromagnetic characteristic testing device proposed in this invention has a through-slot groove on the base plate, through which the slider is connected to the base plate, which facilitates the sliding of the clamping assembly on the base plate and makes the measurement more convenient. In addition, the slider is provided with a mounting slot, which can be used to install different clamping assemblies, making it easy to change the clamping assembly according to different workpieces to be tested, and making the operation more flexible and convenient.

[0020] 3. The relay electromagnetic characteristic testing device proposed in this invention has an adjustment hole at the bottom of the yoke mounting base, a yoke adjusting rod inside the adjustment hole, and a first base and a second base that smoothly transition between each other on the end face of the adjustment hole that contacts the yoke adjusting rod. A boss is provided on the end face of the yoke adjusting rod that contacts the adjustment hole. This arrangement allows adjustment of the height of the yoke mounting base by rotating the yoke adjusting rod, thereby adjusting the height of the supported clamp and enabling measurement of two different types of yokes.

[0021] 4. The relay electromagnetic characteristic testing device proposed in this invention includes a coil mounting bracket comprising a U-shaped coil mounting bracket base. A mounting groove is provided at a relative position within the U-shaped opening of the coil mounting bracket base. A coil mounting bracket clamp and a coil mounting bracket clamping rubber are provided within the mounting groove. This design allows for convenient installation or replacement of the yoke coil excitation assembly, armature coil excitation assembly, and core coil excitation assembly, achieving the purpose of flexibly changing the coil excitation assembly according to different workpieces being tested. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the structure of the yoke ferromagnetic property detection device of the present invention;

[0024] Figure 3 This is a schematic diagram of the armature magnetic property detection device of the present invention;

[0025] Figure 4 This is a schematic diagram of the outer cover structure of the armature and yoke coil frame of the present invention;

[0026] Figure 5 This is a schematic diagram of the iron core magnetic property detection device of the present invention;

[0027] Figure 6 This is a schematic diagram of the outer casing structure of the iron core coil frame of the present invention;

[0028] Figure 7 This is a schematic diagram of the iron core coil and coil frame structure of the present invention;

[0029] Figure 8 This is a schematic diagram of the coil mounting bracket structure of the present invention;

[0030] Figure 9 This is a schematic diagram of the iron core mounting frame structure of the present invention;

[0031] Figure 10 This is a schematic diagram of the armature mounting bracket structure of the present invention;

[0032] Figure 11 This is a schematic diagram of the slider base structure of the present invention;

[0033] Figure 12 This is a schematic diagram of the yoke mounting base structure of the present invention;

[0034] Figure 13 This is a schematic diagram of the internal structure of the yoke mounting base of the present invention;

[0035] Figure 14 This is a schematic diagram of the yoke adjusting rod structure of the present invention;

[0036] Figure 15 This is a schematic diagram of the bottom structure of the yoke mounting base of the present invention.

[0037] In the diagram: 1. Operating table; 2. Storage box; 3. Magnetometer; 4. Testing fixture; 5. Yoke coil cover; 6. Yoke coil; 7. Coil mounting bracket; 8. Yoke; 9. Yoke mounting bracket; 10. Slider; 11. Lower stop block; 12. Base plate; 1201. Slide groove; 13. Core coil cover; 14. Core coil; 15. Core; 16. Core pole face; 17. Armature coil; 18. Armature; 19. Armature mounting base; 1901. Armature mounting slot; 1902. Armature fixing pin; 1903. Armature mounting baffle; 20. Power socket; 21. Coil frame cover; 22. Yoke coil cover seat; 23. Core coil cover seat; 24. Core coil body 25. Upper coil frame of the iron core; 26. Lower coil frame of the iron core; 27. Coil mounting bracket base; 28. Coil mounting bracket clamping plate; 29. ​​Coil mounting bracket clamping rubber; 30. Yoke mounting base; 3001. Boss; 3002. Adjustment hole; 31. Top post; 32. Compression spring; 33. Top screw; 34. Yoke adjusting rod; 3401. First base; 3402. Second base; 3403. Adjusting rod; 3404. Annular groove; 35. Iron core mounting base; 36. Iron core fastening nail; 37. Iron core mounting seat rear baffle; 38. Locking handle; 39. Pressure block; 40. Slider base; 4001. Sliding key; 41. Slider rear clamping plate; 42. Slider clamping rubber. Detailed Implementation

[0038] The technical solution of the present invention will now be described in detail with reference to the accompanying drawings. In this description, it should be understood that, unless otherwise explicitly stated, the terms "installation," "placement," "setting," "connection," and "fixing," etc., should be interpreted broadly and can be understood as fixed connection or detachable connection, etc., depending on the specific technical solution in which they are applied. Those skilled in the art can understand the specific meaning of the above terms based on the specific circumstances involved in the technical solution. In this description, it should be understood that the terms "upper," "lower," "left," "right," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings.

[0039] In the technical solution of this application, the armature excitation coil, the yoke excitation coil and the core excitation coil have the function of generating a magnetic field after being energized, that is, having an excitation function. Therefore, in the description of the technical solution below, when it is not necessary to specifically distinguish which type of coil it is, but only to describe the structural positional relationship, the three types of coils will be collectively referred to as excitation coils.

[0040] In the prior art, when measuring the magnetic characteristics of a relay, it is usually necessary to hold the yoke, armature, and iron core of the part to be measured and insert them into the excitation coil. Since the excitation coil is not fixed and is placed on the workbench, it is very easy to be damaged by frequent contact with the tabletop. Moreover, since the part is inserted into the excitation coil by hand, it is impossible to ensure that the insertion depth into the coil is the same each time, which affects the accuracy of the measured value and makes it difficult to accurately determine whether the part is qualified.

[0041] In view of the defects involved in the prior art, the present invention proposes a relay magnetic characteristic detection device. By installing the yoke excitation coil, armature excitation coil, and iron core excitation coil in a coil outer casing with the same external dimensions, and then installing the coil outer casing in the same coil mounting rack, when it is necessary to replace the workpiece to be measured, different excitation coils can be conveniently replaced according to the different workpieces to be measured, and the operation is simple. In terms of the installation of the workpiece to be measured, three mounting bases are designed according to the external dimensions of the three different parts of the yoke, armature, and iron core, and can be conveniently replaced according to the different workpieces to be measured. In addition, a chute is provided on the bottom plate, and the slider slides linearly in the chute to drive the workpiece to be measured into and out of the corresponding excitation coil. Therefore, the insertion depth can be relatively accurate, improving the accuracy of the measurement result. The specific technical solution of the present invention is as follows.

[0042] Embodiment 1:

[0043] As Figures 1 to 3 shown, a relay magnetic characteristic detection device includes a fluxmeter 3 and a detection tooling 4. The fluxmeter 3 and the detection tooling 4 are installed on an operating table 1, and a storage box 2 for storing each component of the detection tooling is also provided on the operating table 1. In Figure 1In the illustrated embodiment, the operating table 1 is equipped with a frame for placing the fluxmeter 3. The fluxmeter 3 is placed on the frame, and the storage box 2 is placed below it, effectively saving space in the entire testing equipment. Here, the testing fixture 4 includes a base plate 12, with a coil mounting frame 7 at one end. A coil excitation assembly with excitation function is detachably installed in the coil mounting frame 7. A clamp assembly is slidably connected to the base plate 12 via a slider 10, which can slide left and right along a straight line on the base plate 12. In use, the clamp assembly is installed on the slider 10, and pushing the slider 10 causes the clamp assembly to reciprocate along a straight line, allowing the workpiece fixed on the clamp assembly to move in and out of the coil excitation assembly. Since both the coil excitation assembly and the clamp assembly are detachably connected, they can be flexibly replaced according to different workpieces. To ensure a different insertion depth into the excitation coil each time, a scale can be provided on the base plate 12, and corresponding indicator marks can be provided on the slider 10 to control the insertion depth each time and ensure the accuracy of the measurement results. In this embodiment, the slider 10 is slidably connected to the base plate 12 and can slide left and right along a straight line on the base plate 12. In a specific implementation, a straight groove 1201 that passes through the base plate 12 can be provided on the base plate 12, and the slider 10 is slidably connected to the base plate 12 through the straight groove 1201.

[0044] In the above technical solution, the sliding connection between the slider 10 and the base plate 12 can be further as follows: Figure 11 As shown, the slider 10 includes a slider base 40. A rectangular first mounting groove is formed on the upper surface of the slider base 40. A slider rear clamping plate 41 and a slider clamping rubber 42 are arranged in the first mounting groove. A sliding key 4001 is provided at the bottom end of the slider base 40. The sliding key 4001 is slidably disposed in and passes through the slide groove 1201, so that the slider 10 can slide relatively stably in the slide groove 1201. To make the sliding connection between the slider 10 and the base plate 12 more stable, a lower stop block 11 can also be provided at the bottom of the base plate 12. After the sliding key 4001 of the slider 10 is installed in the slide groove 1201 of the base plate 12, the lower end of the sliding key 4001 passes through the slide groove 1201. At this time, the lower stop block 11 is connected to the lower end surface of the sliding key 4001, which ensures that the slider 10 will not fall out of the slide groove 1201 due to improper human operation during sliding, making the operation more reliable.

[0045] Based on the sliding key 4001 at the bottom of the slider 10, in order to ensure that the depth of the workpiece to be tested inserted into the excitation coil of the coil excitation assembly is the same each time the slider 10 drives it, the dimensions of the sliding key 4001 and the slide groove 1201 can be set. When the sliding key 4001 contacts one end of the slide groove 1201, the workpiece to be tested moves away from the coil excitation assembly. When the sliding key 4001 contacts the other end of the slide groove 1201, the workpiece to be tested is inserted into the excitation coil of the coil excitation assembly.

[0046] In the technical solution of Embodiment 1, the coil excitation assembly can be replaced according to the different workpieces to be tested. When the workpiece to be tested is a yoke, a yoke coil excitation assembly is required; when the workpiece to be tested is an armature, an armature coil excitation assembly is required; and when the workpiece to be tested is an iron core, an iron core coil excitation assembly is required. See the following embodiments for details.

[0047] Example 2:

[0048] Figures 2 to 4 As shown, when the workpiece to be tested is a yoke, the coil excitation assembly is a yoke coil excitation assembly, including a yoke coil outer cover 5 and a yoke excitation coil 6. The yoke excitation coil 6, after being energized, has an excitation function and is housed inside the yoke coil outer cover 5, which is located within the coil mounting bracket 7. When the workpiece to be tested is an armature, the coil excitation assembly is an armature coil excitation assembly, including a yoke coil outer cover 5 and an armature excitation coil 17. The armature excitation coil 17 is housed inside the yoke coil outer cover 5, which is located within the coil mounting bracket 7.

[0049] Both the yoke coil excitation assembly and the armature coil excitation assembly in the above technical solution include an armature coil outer cover 5. The only difference between the two coil excitation assemblies is that the excitation coils inside the armature coil outer cover 5 are different, namely, the yoke excitation coil 6 and the armature excitation coil 17 are used respectively.

[0050] The yoke coil housing 5 includes a yoke coil housing base 22. The top of the yoke coil housing base 22 is provided with a coil frame cover 21. The side wall of the armature coil housing base 22 is provided with a power socket 20 and a square hole for the excitation coil to extend. After installing the yoke excitation coil 6 or armature excitation coil 17 inside the armature coil housing 5, the power socket 20 is connected to the terminals of the yoke excitation coil 6 or armature excitation coil 17. Both the yoke excitation coil 6 and armature excitation coil 17 adopt an I-shaped structure, with a through hole along the axial direction for inserting the workpiece to be measured. The shape and size of this through hole vary depending on the workpiece to be measured. After installing the yoke excitation coil 6 or armature excitation coil 17 inside the yoke coil housing 5, the yoke coil housing 5 is installed in the coil mounting bracket 7, thus completing the assembly installation.

[0051] When installing the yoke coil outer cover 5 into the coil mounting bracket 7, in order to facilitate the installation and removal of the yoke coil outer cover 5 according to different workpieces to be tested, such as... Figure 8 The coil mounting bracket 7 shown includes a U-shaped coil mounting bracket base 27. A second mounting groove is positioned relative to the U-shaped opening of the coil mounting bracket base 27. A coil mounting bracket clamp 28 and a coil mounting bracket clamping rubber 29 are disposed within the second mounting groove. The U-shaped coil mounting bracket base 27 allows for easy replacement of the yoke coil outer cover 5 and the excitation coil installed inside it, making the use of the relay magnetic characteristic detection device more convenient.

[0052] In the above technical solution, when the workpiece to be measured is a yoke, the corresponding clamping assembly is a yoke clamping assembly. For example... Figure 2 , Figures 12 to 15 As shown, the yoke clamp assembly includes a yoke mounting frame 9 and a yoke mounting base 30. The yoke mounting base 30 is rectangular in shape, and the yoke mounting frame 9 is an L-shaped structure fixedly installed on the side of the yoke mounting base 30 away from the yoke coil excitation assembly. The bottom of the yoke mounting frame 9 is movably connected to the first mounting groove at the upper end of the slider 10. When installing the yoke to be tested, the yoke clamping end 801 of the L-shaped yoke 8 to be tested is installed in the gap between the L-shaped yoke mounting frame 9 and the yoke mounting base 30.

[0053] When the workpiece to be measured is an armature, the corresponding clamping assembly is an armature clamping assembly. For example... Figure 3 , Figure 10 As shown, the armature clamp assembly includes an armature mounting base 19. An armature mounting groove 1901 is formed on the side of the armature mounting base 19 away from the armature coil excitation assembly. An armature mounting baffle 1903 is fixed in the armature mounting groove 1901 and has a certain gap between it and the armature mounting groove 1901. The size of this gap is required to accommodate the armature clamping end 1801; that is, the width of the gap must be greater than the thickness of the armature clamping end 1801. A threaded through hole is provided on the armature mounting plate 1903, and an armature fastening pin 1902 is provided with a thread whose length is greater than the depth of the threaded through hole on the armature mounting plate 1903. The armature fastening pin 1902 is threadedly connected to the armature mounting plate 1903. When installing the armature to be tested, the armature clamping end 1801 of the L-shaped armature 18 to be tested is placed in the gap between the armature mounting groove 1901 and the armature mounting plate 1903, and then the armature clamping end 1801 is fixed by rotating the armature fixing pin 1902.

[0054] Example 3:

[0055] Figures 5 to 7As shown, when the workpiece to be tested is an iron core, the coil excitation assembly is an iron core coil excitation assembly, including an iron core coil outer cover 13 and an iron core excitation coil 14. The iron core excitation coil 14 is disposed inside the iron core coil outer cover 13, and the iron core coil outer cover 13 is disposed inside the coil mounting bracket 7. The iron core coil outer cover 13 and the yoke coil outer cover 5 have the same external dimensions and basic structure. Therefore, the same coil mounting bracket 7 as that used when installing the yoke coil outer cover 5 can be used during installation, improving the versatility of the components of the coil excitation assembly. The difference between the iron core coil outer cover 13 and the yoke coil outer cover 5 is that the yoke excitation coil 6 and the armature excitation coil 17 housed in the yoke coil outer cover 5 are rectangular, therefore the side opening of the yoke coil outer cover 5 is rectangular. The iron core excitation coil 14 housed in the iron core coil outer cover 13 includes an upper iron core coil frame 25 and a lower iron core coil frame 26. The upper iron core coil frame 25 and the lower iron core coil frame 26 are connected and fixed by a plug-in part consisting of a plug hole and a plug rod at the joint. The cylindrical iron core coil body 24 is fixed between the upper iron core coil frame 25 and the lower iron core coil frame 26, and the end face of the iron core coil body 24 is higher than the side of the structure formed by the upper iron core coil frame 25 and the lower iron core coil frame 26. Therefore, the opening provided on the side wall of the iron core coil outer cover seat 23 of the iron core coil outer cover 13 is a circular hole.

[0056] Correspondingly, when the workpiece to be measured is an iron core, the corresponding fixture assembly is... Figure 9 The illustrated core clamp assembly includes a core mounting base 35 and a core mounting base rear baffle 37. A groove for placing the core 15 is formed in the top of the core mounting base 35. The core mounting base rear baffle 37 is bolted to the core mounting base 35. A receiving cavity is provided between the upper opposing contact surfaces of the core mounting base 35 and the core mounting base rear baffle 37 to accommodate the core pole face 16. The head of the core fastening nail 36 is also located within this receiving cavity. Therefore, the width of this receiving cavity along the axial direction of the core 15 should be greater than the sum of the thicknesses of the core pole face 16 and the circular nail head of the core fastening nail 36. One end of the square-shaped tail of the core fastening nail 36 passes through the core mounting base rear baffle 37 in the receiving cavity and is sequentially connected to a locking handle 38 with a square hole in the center and a pressure block 39. The core fastening screw 36 is connected to the rear baffle 37 of the core mounting base by a threaded connection, and the pressure block 39 is fixedly connected to the end of the core fastening screw 36 by screws. Since one end of the core fastening screw 36 is square, a locking handle 38 with a square hole in the middle is set at the square end of the core fastening screw 36. Rotating the locking handle 38 will drive the core fastening screw 36 to rotate, thereby pushing the core 15 located in the receiving cavity to be fastened to the core mounting base 35.

[0057] Example 4:

[0058] Figures 12 to 15As shown, when the workpiece to be measured is a yoke, the height of the yoke mounting base 30 is sometimes adjusted according to the thickness of the yoke to ensure that yokes of different models and heights can be accurately inserted into the center position of the yoke coil 6 to guarantee measurement accuracy. Therefore, an adjustment hole 3002 is provided at the bottom of the yoke mounting base 30. A cylindrical space is provided at one end of the adjustment hole 3002 near the yoke adjustment rod 34, and a boss 3001 is provided in the cylindrical space. The boss 3001 has a smooth transition with its end face. A limiting hole is provided on the side of the yoke mounting base 30, which is perpendicular to the axis of the adjustment hole and extends through it. A top post 31, a compression spring 32, and a set screw 33 are installed in sequence in the limiting hole, and the set screw 33 is threadedly connected to the limiting hole. The end of the yoke adjusting rod 34 includes a non-circular first base 3401, a circular second base 3402, and an adjusting rod 3403. The first base 3401 is smoothly transitioned onto the second base 3402. The upper end of the adjusting rod 3403 is provided with an annular groove 3404. When the yoke adjusting rod 34 is inserted into the adjusting hole, the top post 31 is located within the groove 3404 to form a limit, ensuring that the yoke adjusting rod 34 does not fall out of the adjusting hole 3002. Since the end faces of the first base 3401 and the second base 3402 have different heights and the end faces are smoothly transitioned, when the yoke adjusting rod 34 rotates, the boss 3001 will switch contact with the end faces of the first base 3401 and the second base 3402 with different heights, thereby adjusting the height of the yoke mounting bracket 9 to meet the needs of yokes of different thicknesses.

[0059] In this relay magnetic characteristic testing device, in order to avoid the influence of metal components on the measurement of the workpiece, the entire device is made of non-metallic materials except for each excitation coil, and the fasteners used to secure each component of the testing device are made of resin materials.

Claims

1. A device for detecting magnetic characteristics of a relay, comprising a fluxmeter (3) and a detection tool (4), characterized in that: The detection tool (4) comprises a bottom plate (12), a coil excitation assembly and a fixture assembly, the coil excitation assembly is fixedly connected with the bottom plate (12) through a coil mounting frame (7), the fixture assembly is slidably connected with the bottom plate (12) through a sliding block (10), and the sliding block (10) drives the fixture assembly to make the workpiece to be detected enter and exit the coil excitation assembly; The coil excitation assembly is detachably connected with the coil mounting frame (7), and the fixture assembly is detachably connected with the sliding block (10); The bottom plate (12) is provided with a sliding groove (1201) penetrating through the bottom plate (12), and the sliding block (10) is slidably connected with the bottom plate (12) through the sliding groove (1201); The coil mounting frame (7) comprises a U-shaped coil mounting frame base (27), and opposite positions in the U-shaped opening of the coil mounting frame base (27) are provided with second mounting grooves, and the second mounting grooves are provided with a coil mounting frame clamping plate (28) and a coil mounting frame clamping rubber (29); The sliding block (10) comprises a sliding block base (40), a first mounting groove is formed in the upper end face of the sliding block base (40), and a sliding block rear clamping plate (41) and a sliding block clamping rubber (42) are arranged in the first mounting groove, and the bottom end of the sliding block base (40) is provided with a sliding key (4001), the sliding key (4001) is slidably arranged in the sliding groove (1201) and penetrates through the sliding groove (1201).

2. The relay magnetic characteristic detection device according to claim 1, characterized by: The coil excitation assembly is a yoke coil excitation assembly, which comprises a yoke coil outer cover (5) and a yoke excitation coil (6), the yoke excitation coil (6) is arranged in the yoke coil outer cover (5), and the yoke coil outer cover (5) is arranged in the coil mounting frame (7).

3. The relay magnetic characteristic detection apparatus according to claim 2, characterized by: The fixture assembly is a yoke fixture assembly, which comprises a yoke mounting frame (9) and a yoke mounting base (30), the yoke mounting frame (9) is fixedly arranged on the side of the yoke mounting base (30) away from the yoke coil excitation assembly, and the bottom of the yoke mounting frame (9) is movably connected to the first mounting groove in the upper end of the sliding block (10).

4. The relay magnetic characteristic detection apparatus according to claim 3, characterized by: The bottom of the yoke mounting base (30) is provided with an adjusting hole (3002), a limiting hole axially perpendicular to the adjusting hole and penetrating through is arranged on the side of the yoke mounting base (30), and a yoke adjusting rod (34) is inserted into the adjusting hole (3002); The yoke adjusting rod (34) comprises a first base (3401) in a non-complete circular shape, a second base (3402) in a circular shape and an adjusting rod (3403), the first base (3401) is smoothly and transitionally arranged on the second base (3402), the upper end of the adjusting rod (3403) is provided with an annular groove (3404), one end of the adjusting hole (3002) close to the sliding block (10) is provided with a boss (3001), and the end faces of the first base (3401) and the second base (3402) are in switching contact with the boss (3001) by rotating the yoke adjusting rod (34); The limiting hole is sequentially provided with a jacking post (31), a compression spring (32) and a jacking screw (33), the jacking post (31) is located in the annular groove (3404), and the jacking screw (33) is threadedly connected with the limiting hole.

5. The relay magnetic characteristic detection apparatus of claim 1, wherein: The coil excitation assembly is an armature coil excitation assembly, comprising an armature yoke coil cover (5) and an armature excitation coil (17), wherein the armature excitation coil (17) is arranged in the armature yoke coil cover (5), and the armature yoke coil cover (5) is arranged in the coil mounting frame (7).

6. The relay magnetic characteristic detection apparatus according to claim 5, wherein: The clamp assembly is an armature clamp assembly, comprising an armature mounting base (19), wherein an armature mounting groove (1901) is formed in the side of the armature mounting base (19) away from the armature coil excitation assembly, and an armature fastening nail (1902) passes through an armature mounting baffle (1903) to fix the armature to be tested in the armature mounting groove (1901).

7. The relay magnetic characteristic detection apparatus of claim 1, wherein: The coil excitation assembly is an armature coil excitation assembly, comprising an armature yoke coil cover (5) and an armature excitation coil (17), wherein the armature excitation coil (17) is arranged in the armature yoke coil cover (5), and the armature yoke coil cover (5) is arranged in the coil mounting frame (7).

8. The relay magnetic characteristic detection apparatus according to claim 7, wherein: The clamp assembly is an armature clamp assembly, comprising an armature mounting base (19), wherein an armature mounting groove (1901) is formed in the side of the armature mounting base (19) away from the armature coil excitation assembly, and an armature fastening nail (1902) passes through an armature mounting baffle (1903) to fix the armature to be tested in the armature mounting groove (1901). The clamp assembly is an armature clamp assembly, comprising an armature mounting base (19), wherein an armature mounting groove (1901) is formed in the side of the armature mounting base (19) away from the armature coil excitation assembly, and an armature fastening nail (1902) passes through an armature mounting baffle (1903) to fix the armature to be tested in the armature mounting groove (1901).

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