Three-pole magnetic block magnetic flux testing device

Abstract

The utility model provides a three-pole magnetic block magnetic flux testing device, which relates to the technical field of magnetic flux testing and comprises a base, a shell, a testing mechanism, a power supply and a testing positioning plate. The shell is vertically connected to the top surface of the base, and a glue pouring hole is formed in the top surface of the base and located in the projection range of the through hole; the testing mechanism is installed in the through hole of the shell, the testing mechanism is sealed and fixed through glue pouring, and the testing mechanism comprises a testing contact plate, and a first magnetic flux assembly, a second magnetic flux assembly and a third magnetic flux assembly which are connected to the testing contact plate; the top surface of the test contact plate is exposed out of the potting colloid; the test positioning plate is installed on the top of the housing. The magnetic flux testing device has the advantages that by arranging the three magnetic flux assemblies which are horizontally arranged in parallel and distributed at equal intervals, the unique three-pole magnetic field distribution characteristic of the three-pole magnetic block can be accurately adapted, the problem that an existing double-iron-core structure device cannot conduct magnetic flux testing on the three-pole magnetic block is effectively solved, and a testing mechanism is sealed and fixed in a glue pouring mode.

Description

Technical Field

[0001] The utility model relates to the technical field of magnetic flux testing, in particular to a three-pole magnetic block magnetic flux testing device. Background Art

[0002] In the field of magnetic material performance testing, flux testing is a key step in evaluating magnetic performance. Prior art, for example, a miniature flux testing device disclosed in a Chinese utility model patent (CN204044344U) uses a two-core structural design to achieve flux testing of bipolar magnets, meeting the testing needs of some magnets to a certain extent. However, with the increasing diversification of magnetic material application scenarios, especially in high-tech fields such as new energy vehicle motors and high-precision sensors, the use of tripolar magnetic blocks has become increasingly widespread. This device is only designed for testing structures of bipolar magnets and cannot adapt to the unique magnetic field distribution characteristics of tripolar magnetic blocks. It is difficult to accurately obtain the flux parameters of multipolar magnets, which seriously restricts its scope of application in emerging industries.

[0003] In terms of the structural stability of the device, the mechanical structure used in this patent to fix the test mechanism has obvious defects. Since the coil of the flux testing device needs to have a high sensitivity, its structure is usually delicate and fragile. In actual use, it is difficult for the mechanical structure to effectively buffer external vibrations, especially in an industrial production environment, where the operation of peripheral equipment can easily cause resonance of the test device. Once resonance occurs, the connection between the coil and the fixed structure is prone to loosening or even falling off, which not only affects the accuracy of the test data, but also the frequent structural damage greatly shortens the overall service life of the device, increases equipment maintenance costs and the burden of enterprise operations. Utility Model Content

[0004] The present invention aims to solve the technical problems that the existing magnetic flux testing device can only realize bipolar magnet testing and has an unstable structure, which affects the test accuracy and has a poor service life. In order to overcome the above defects of the existing technology, the present invention provides a test mechanism that realizes the testing requirements of the three-pole magnetic block through three groups of magnetic flux components, and fixes and seals the test mechanism by glue filling, ensuring the test accuracy while also guaranteeing the service life of the device.

[0005] For the purpose of this utility model, the following technical solutions are adopted:

[0006] A three-pole magnetic block flux testing device comprises a base, a shell, a test mechanism and a test positioning plate; a through hole is vertically penetrated on the shell, the shell is vertically connected to the top surface of the base, and a glue hole is provided on the top surface of the base and within the projection range of the through hole; the test mechanism is installed in the through hole of the shell and is sealed and fixed by glue filling, the test mechanism comprises a test contact plate and a first magnetic flux component, a second magnetic flux component and a third magnetic flux component connected to the lower part of the test contact plate; the top surface of the test contact plate is exposed outside the glue filling; the first magnetic flux component, the second magnetic flux component and the third magnetic flux component are vertically arranged and arranged at equal intervals in the horizontal direction; the power supply is installed on the base, and the power supply is electrically connected to the test mechanism, the test positioning plate is installed on the top of the shell, and a first placement hole for magnetic block positioning is provided on the test positioning plate, the first placement hole passes through the test positioning plate and allows the magnetic block to contact the test contact plate after being placed. By setting up three horizontally parallel and evenly spaced magnetic flux assemblies, the device can precisely adapt to the unique three-pole magnetic field distribution characteristics of the three-pole magnetic block. This effectively solves the problem that existing dual-core structure devices cannot perform magnetic flux testing on three-pole magnetic blocks, greatly expanding the test application range of the device. At the same time, the test mechanism is sealed and fixed by glue. Compared with traditional mechanical structure fixing, this fixing method can provide more stable support for the magnetic flux assembly, effectively preventing the magnetic flux assembly from being easily affected by resonance and falling off during use due to mechanical structure fixing, significantly improving the structural stability and service life of the device.

[0007] Preferably, the first, second, and third magnetic flux components each include an iron core and a coil mounted thereon, with the three cores arranged vertically and equally spaced horizontally. The second magnetic flux component is located between the first and third magnetic flux components, with the second magnetic flux component and the first magnetic flux component having opposite magnetic poles, while the first and third magnetic flux components have the same magnetic poles. This magnetic pole distribution design matches the magnetic pole arrangement of the three-pole magnetic block, enabling more precise sensing of magnetic field changes at each pole of the three-pole magnetic block, thereby improving the accuracy and reliability of magnetic flux test data and ensuring precise acquisition of the magnetic flux parameters of the three-pole magnetic block.

[0008] Preferably, the top surface of the base is further provided with a magnetic block orientation verification module for identifying the insertion direction of the magnetic block. The magnetic block orientation verification module can avoid test data deviation or errors caused by incorrect insertion direction of the magnetic block, improve the standardization of test operations and the validity of test results, and reduce repeated tests and time waste caused by incorrect orientation.

[0009] Preferably, the magnetic block orientation verification module includes a magnetic block orientation plate and a magnetic block sample; the magnetic block orientation plate is fixed to the top surface of the base and is provided with a second placement hole for the magnetic block sample orientation; the magnetic block sample is fixed in the second placement hole of the magnetic block orientation plate. Through the intuitive sample display and structural reference, users can more clearly and accurately determine the correct placement direction of the magnetic block, further enhancing the operability and accuracy of the magnetic block orientation verification and reducing the operational difficulty.

[0010] Preferably, each of the first and second placement holes includes an opening extending from the outer wall of the plate to the interior and a positioning portion that matches the shape of the magnet. The positioning portion of the first placement hole is positioned correspondingly on the test contact plate, and the opening gradually decreases in diameter from the outside to the inside and extends to the positioning portion. This open design facilitates accurate insertion and placement of the magnet on the test contact plate, ensuring both accuracy and convenience of testing.

[0011] Preferably, the glue injection hole includes an upwardly opening waist-shaped groove and a through-hole provided at the bottom end of the waist-shaped groove and extending vertically therethrough; the lower portions of the first, second, and third magnetic flux components are located within the waist-shaped groove, and the first, second, and third magnetic flux components are arranged linearly along the long axis of the waist-shaped groove, and the through-hole is connected to the bottom surface of the base. This structure not only facilitates and smoothes the glue injection operation, but also allows the waist-shaped groove to precisely limit the lower portion of the magnetic flux component, further improving the stability of the test mechanism installation. The stepped hole structure also facilitates a more secure fixation after glue injection.

[0012] Preferably, after glue pouring, the top surface of the housing is formed into a horizontal, flat surface, and the top surface of the test contact plate is arranged flush with the flat surface; the test positioning plate is horizontally mounted on the flat surface. The flat top surface of the housing after glue pouring facilitates installation of the test positioning plate and also facilitates horizontal placement of the magnetic block, ensuring accuracy and convenience of testing.

[0013] Preferably, the base is further provided with an adjustable resistor electrically connected to the power supply and the test mechanism. By adjusting the adjustable resistor, parameters such as the current or voltage of the test circuit can be flexibly adjusted. This allows for targeted test parameter settings based on different test requirements or magnetic block characteristics, improving the device's adaptability to different test scenarios and test flexibility, ensuring that test results are more in line with actual needs.

[0014] Preferably, the base includes a power supply mounting hole extending vertically therethrough; the power supply is mounted within the mounting hole, the bottom of the power supply being electrically connected to the bottom of the testing mechanism via a wire. A wiring slot is provided on the bottom surface of the base, located between the power supply mounting hole and the glue potting hole, and the wires are positioned within the slot. The provision of the wiring slot ensures more standardized and orderly wiring, avoiding safety hazards and poor contact issues caused by cluttered wiring. It also facilitates inspection and maintenance of the circuit, ensuring the stability and reliability of the circuit connection.

[0015] Preferably, the bottom surface of the base is further provided with a resistor mounting slot; the resistor mounting slot and the glue injection hole are located on either side of the power supply mounting hole, respectively, and the resistor mounting slot, glue injection hole, and power supply mounting hole are aligned in a straight line. One end of the resistor mounting slot is connected to the power supply mounting hole, and the other end of the resistor mounting slot extends to the outer wall of the base. The adjustable resistor is mounted in the resistor mounting slot, and the adjustable resistor is electrically connected to the power supply and the test mechanism via a wire. This structure makes the installation of the adjustable resistor more compact, effectively utilizes the internal space of the base, facilitates operation and adjustment of the adjustable resistor, and ensures the overall structure of the device is beautiful and neat.

[0016] To sum up, the advantages of the present invention are: first, a more complex magnetic field distribution can be formed through the three-pole structure, which can accurately adapt to the flux vector test of the three-pole magnetic block, effectively improving the measurement accuracy and adaptability of the multi-pole magnet; second, the glue sealing method not only enhances the stability of the test mechanism, but also avoids the gap caused by mechanical connection, thereby eliminating the hidden danger of resonance. At the same time, the flat surface design provides an accurate positioning reference for the magnetic block test; third, ensure that the magnetic block is placed in the test area in the correct direction, effectively avoiding the measurement error caused by the wrong placement direction of the magnetic block, and greatly improving the reliability of the test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a three-pole magnetic block flux testing device of the present invention.

[0018] Figure 2 It is a structural schematic diagram of the bottom surface of the three-pole magnetic block flux testing device of the present invention.

[0019] Figure 3 It is an exploded view of the three-pole magnetic block flux testing device of the present invention.

[0020] Figure 4 It is a structural diagram of the testing mechanism of the utility model.

[0021] Description of reference numerals:

[0022] 1. Base; 11. Glue filling hole; 111. Waist-shaped groove; 112. Through hole; 12. Limiting circular groove; 13. Power supply mounting hole; 14. Wiring groove; 15. Resistor mounting groove; 2. Housing; 20. Through hole; 201. Flat surface; 3. Testing mechanism; 30. Test contact plate; 31. First magnetic flux component; 311. Iron core; 312. Coil; 32. Second magnetic flux component; 33. Third magnetic flux component; 4. Power supply; 41. Mounting thread; 42. Fixing nut; 5. Test positioning plate; 51. First placement hole; 511. Opening; 512. Positioning part; 52. Connecting screw; 6. Magnetic block orientation verification module; 61. Magnetic block orientation plate; 62. Magnetic block sample; 63. Second placement hole; 7. Adjustable resistor; 8. Support foot. DETAILED DESCRIPTION

[0023] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of the present application and are not intended to limit the scope of protection of the embodiments of the present application. Those skilled in the art may adjust them as needed to suit specific application scenarios.

[0024] In the description of the embodiments of this application, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of this application based on the specific circumstances.

[0025] In the embodiments of the present application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," and "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0026] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0027] like Figures 1 to 4As shown, a three-pole magnetic block flux testing device includes a base 1, a shell 2, a test mechanism 3, a power supply 4, and a test positioning plate 5; a through hole 20 is vertically provided on the shell 2, making the shell 2 hollow and cylindrical. The shell 2 is vertically mounted on the top surface of the base 1, and a glue hole 11 is vertically provided on the top surface of the base 1 and is located within the projection range of the through hole 20 of the shell 2; the test mechanism 3 is mounted in the shell 2, and the test mechanism 3 is sealed and fixed by glue, and the test mechanism 3 includes a test contact plate 30 and a first magnetic flux component 31, a second magnetic flux component 32, and a third magnetic flux component 33 connected to the lower end of the test contact plate 30; the first magnetic flux component 31, the second magnetic flux component 32, and the third magnetic flux component 33 are vertically arranged and arranged at equal intervals in the horizontal direction; The top surface of the test contact plate 30 is exposed outside the glue-filled colloid. The test contact plate 30 comprises a connecting rod connected to the magnetic flux assembly and a contact plate disposed on the connecting rod. The first magnetic flux assembly 31, the second magnetic flux assembly 32, and the third magnetic flux assembly 33 are sealed and fixed within the through hole 20 by glue filling. The power supply 4 is mounted on the base 1 and is electrically connected to the test mechanism 3. The test positioning plate 5 is provided with a first placement hole 51 for positioning the magnetic block. The first placement hole 51 passes through the test positioning plate 5 and allows the magnetic block to contact the test contact plate 30 after being placed. By providing three horizontally parallel and evenly spaced magnetic flux assemblies, the device can accurately adapt to the unique three-pole magnetic field distribution characteristics of the three-pole magnetic block, effectively solving the problem that existing dual-core structure devices cannot perform magnetic flux testing on three-pole magnetic blocks, greatly expanding the device's test application range. Furthermore, the test mechanism 3 is sealed and fixed using glue potting. Compared to traditional mechanical fixing methods, this fixing method provides more stable support for the magnetic flux assembly, effectively preventing the magnetic flux assembly (coil 312) from being easily affected by resonance and falling off during use due to mechanical fixing, significantly improving the structural stability and service life of the device. Furthermore, the design of the first placement hole 51 of the test positioning plate 5 facilitates the accurate placement of the magnetic block on the test contact plate 30, ensuring the accuracy and convenience of testing.

[0028] like Figure 1 As shown, after glue pouring, the top surface of the housing 2 forms a horizontal, flat surface 201, and the top surface of the test contact plate 30 is flush with the flat surface 201. The test positioning plate 5 is fixed to the top surface of the housing 2 by three evenly distributed connecting screws 52, and the test positioning plate 5 is installed horizontally on the flat surface 201. The formation of the flat surface 201 on the top surface of the housing 2 after glue pouring facilitates the installation of the test positioning plate 5 and also facilitates the horizontal placement of the magnetic block, ensuring the accuracy and convenience of the test.

[0029] like Figure 3 and Figure 4As shown, the first, second, and third magnetic flux components 31, 32, and 33 each include an iron core 311 and a coil 312 (copper coil) sleeved around the iron core 311. The three iron cores 311 are arranged vertically and evenly spaced horizontally. The second magnetic flux component 32 is located between the first and third magnetic flux components 31, 33. The second magnetic flux component 32 (S pole) is opposite to the first magnetic flux component 31 (N pole), while the first magnetic flux component 31 (N pole) and the third magnetic flux component 33 (N pole) have the same pole. This magnetic pole distribution design matches the pole arrangement of the three-pole magnetic block, enabling more precise sensing of magnetic field changes at each pole of the three-pole magnetic block. This improves the accuracy and reliability of magnetic flux test data and ensures precise acquisition of the magnetic flux parameters of the three-pole magnetic block.

[0030] like Figure 1 and Figure 3 As shown, a magnetic block orientation verification module 6 for identifying the direction in which the magnetic block is placed is also provided at the lower right corner of the top surface of the base 1. The magnetic block orientation verification module 6 can avoid test data deviations or errors caused by incorrect placement of the magnetic block, improve the standardization of the test operation and the validity of the test results, and reduce repeated tests and time waste caused by incorrect directions. The magnetic block orientation verification module 6 includes a magnetic block orientation plate 61 and a magnetic block sample 62; the magnetic block orientation plate 61 is fixed to the top surface of the base 1, and a second placement hole 63 for orienting the magnetic block sample 62 is provided on the magnetic block orientation plate 61; the magnetic block sample 62 is fixed in the second placement hole 63 of the magnetic block orientation plate 61. Through intuitive sample display and structural reference, users can more clearly and accurately grasp the correct placement direction of the magnetic block, further enhancing the operability and accuracy of the magnetic block orientation verification and reducing the difficulty of operation.

[0031] like Figure 1 and Figure 3 As shown, the magnetic block orientation plate 61 and the test positioning plate 5 are both circular and have similar structures. The first placement hole 51 and the second placement hole 63 each include an opening 511 extending from the outer wall of the plate to the inner center and a positioning portion 512 that matches the shape of the magnetic block. The opening 511 is fan-shaped, and the positioning portion 512 is rectangular. The positioning portion 512 of the first placement hole 51 is correspondingly arranged at the test contact plate 30, and the opening 511 gradually decreases in diameter from the outside to the inside and extends to the positioning portion 512. The open design facilitates the accurate horizontal insertion and placement of the magnetic block onto the test contact plate 30, ensuring the accuracy and convenience of the test.

[0032] like Figure 3As shown, the top surface of the base 1 is provided with a limiting circular groove 12 that matches the outer peripheral wall of the shell 2; the shell 2 is limitedly installed in the limiting circular groove 12, and the glue injection hole 11 is provided in the middle of the bottom of the limiting circular groove 12; the glue injection hole 11 is a stepped hole that decreases from large to small from top to bottom, and the stepped hole includes a waist-shaped groove 111 at the top and a through hole 112 provided at the bottom end of the waist-shaped groove 111; the lower parts of the first magnetic flux component 31, the second magnetic flux component 32 and the third magnetic flux component 33 are limited in the waist-shaped groove 111, and the first magnetic flux component 31, the second magnetic flux component 32 and the third magnetic flux component 33 are linearly arranged along the long axis direction of the waist-shaped groove 111, and the through hole 112 is connected to the bottom surface of the base 1. The above structure not only facilitates the glue filling operation and makes the glue filling process smoother, but also can accurately limit the lower part of the magnetic flux component through the waist-shaped groove 111, further improving the stability of the installation of the test mechanism 3. At the same time, the stepped hole structure helps to form a more solid fixing effect after glue filling.

[0033] like Figures 1 to 3 As shown, the base 1 is further provided with an adjustable resistor 7, which is electrically connected to the power supply 4 and the test mechanism 3. By adjusting the adjustable resistor 7, parameters such as the current or voltage of the test circuit can be flexibly adjusted. Targeted test parameter settings can be made according to different test requirements or magnetic block characteristics, thereby improving the device's adaptability to different test scenarios and test flexibility, making the test results more in line with actual needs.

[0034] like Figure 2 and Figure 3 As shown, a power supply mounting hole 13 is vertically provided on the base 1; the power supply 4 is installed in the power supply mounting hole 13, and a mounting thread 41 is provided at the lower part of the power supply 4. The power supply 4 is fixed in the power supply mounting hole 13 by a fixing nut 42 threadedly connected to the mounting thread 41. This installation method facilitates the removal and replacement of the power supply 4, while ensuring the stability of the power supply 4 during the operation of the device, ensuring that the power supply 4 provides a reliable power supply for the test mechanism 3, and avoiding the normal progress of the test work being affected by the loose installation of the power supply 4. The bottom of the power supply 4 is electrically connected to the bottom of the test mechanism 3 through a wire, and a wiring groove 14 is provided on the bottom surface of the base 1 and is located between the power supply mounting hole 13 and the glue injection hole 11, and the wire is located in the wiring groove 14. The provision of the wiring groove 14 makes the wiring more standardized and orderly, avoiding safety hazards and poor contact problems caused by messy wiring, and at the same time facilitates the inspection and maintenance of the circuit, ensuring the stability and reliability of the circuit connection.

[0035] like Figure 2 and Figure 3As shown, the bottom surface of the base 1 is also provided with a resistor mounting slot 15; the resistor mounting slot 15 and the glue injection hole 11 are located on either side of the power supply mounting hole 13, respectively, and the resistor mounting slot 15, glue injection hole 11, and the power supply mounting hole 13 are aligned. One end of the resistor mounting slot 15 is connected to the power supply mounting hole 13, and the other end of the resistor mounting slot 15 extends to the outer wall of the base 1. The adjustable resistor 7 is mounted in the resistor mounting slot 15 and is electrically connected to the power supply 4 and the test mechanism 3 via wires. Combined with the above structure, the installation of the adjustable resistor 7 is more compact, effectively utilizing the internal space of the base 1, while facilitating operation and adjustment of the adjustable resistor 7 and ensuring the overall structure of the device is beautiful and neat.

[0036] like Figures 1 to 3 As shown, the base 1 is in the shape of a cuboid, and support feet 8 are provided on the four corners of the bottom surface of the base 1 to provide stable support.

[0037] During testing, the user confirms the magnet's placement orientation using the magnet orientation verification module 6. The three-pole magnet is inserted through the opening 511 of the first placement hole 51 of the test positioning plate 5 and placed along the positioning portion 512 onto the test contact plate 30. The magnetic field of the three-pole magnet acts on the first, second, and third magnetic flux components 31, 32, and 33, respectively. Because the magnetic pole distribution of these components matches that of the three-pole magnet, the coil 312 senses the magnetic field changes and generates an electrical signal. Power is supplied to the test mechanism 3 via the adjustable resistor 7, which adjusts the circuit parameters according to test requirements. The electrical signal is transmitted to external testing equipment via wiring within the wiring slot 14, enabling precise measurement of the three-pole magnet's magnetic flux parameters. The glue-encapsulated test mechanism 3 effectively avoids resonance, ensuring test stability and data accuracy.

[0038] The advantages of the present invention are: first, a more complex magnetic field distribution can be formed through the three-pole structure, which can accurately adapt to the flux vector test of the three-pole magnetic block, and effectively improve the measurement accuracy and adaptability of multi-pole magnets.

[0039] Second, the glue-filling sealing method not only enhances the stability of the test mechanism 3, but also avoids the gap caused by the mechanical connection, thereby eliminating the resonance risk. At the same time, the flat surface 201 design provides an accurate positioning reference for the magnetic block test.

[0040] Third, ensuring that the magnet is placed in the test area in the correct direction effectively avoids measurement errors caused by incorrect magnet placement and greatly improves the reliability of test results.

[0041] In the description of the embodiments of the present application, it should be noted that in the description of the present application, terms such as "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. This is only for the convenience of description and does not indicate or imply that the device or component must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present application.

[0042] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "in the present embodiment", "specific example", or "some examples" means that the specific features, mechanisms, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, mechanisms, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples, unless they are contradictory.

[0043] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A three-pole magnetic block flux testing device, characterized in that: The invention comprises a base (1), a shell (2), a test mechanism (3), a power supply (4) and a test positioning plate (5); a through hole (20) is vertically provided on the shell (2), the shell (2) is vertically connected to the top surface of the base (1), and a glue injection hole (11) is provided on the top surface of the base (1) and is located within the projection range of the through hole (20); the test mechanism (3) is installed in the through hole (20) of the shell (2), and the test mechanism (3) is sealed and fixed by glue injection, and the test mechanism (3) comprises a test contact plate (30) and a first magnetic flux component (31), a second magnetic flux component (32) and a test contact plate (30) connected to the lower part of the test contact plate (30). The third magnetic flux assembly (33) is provided; the top surface of the test contact plate (30) is exposed outside the glue-filled glue; the first magnetic flux assembly (31), the second magnetic flux assembly (32) and the third magnetic flux assembly (33) are arranged vertically and arranged at equal intervals in the horizontal direction; the power supply (4) is installed on the base (1), and the power supply (4) is electrically connected to the test mechanism (3); the test positioning plate (5) is installed on the top of the housing (2); a first placement hole (51) for positioning a magnetic block is provided on the test positioning plate (5); the first placement hole (51) passes through the test positioning plate (5) and allows the magnetic block to contact the test contact plate (30) after being placed.

2. The three-pole magnetic block flux testing device according to claim 1, characterized in that: The first magnetic flux component (31), the second magnetic flux component (32) and the third magnetic flux component (33) all include an iron core (311) and a coil (312) sleeved on the iron core (311), and the three iron cores (311) are arranged vertically and arranged at equal intervals in the horizontal direction; the second magnetic flux component (32) is located between the first magnetic flux component (31) and the third magnetic flux component (33), and the second magnetic flux component (32) and the first magnetic flux component (31) have opposite magnetic poles, while the first magnetic flux component (31) and the third magnetic flux component (33) have the same magnetic poles.

3. The three-pole magnetic block flux testing device according to claim 1, characterized in that: The top surface of the base (1) is also provided with a magnetic block orientation checking module (6) for identifying the direction in which the magnetic block is placed.

4. The three-pole magnetic block flux testing device according to claim 3, characterized in that: The magnetic block orientation verification module (6) includes a magnetic block orientation plate (61) and a magnetic block sample (62); the magnetic block orientation plate (61) is fixed on the top surface of the base (1), and a second placement hole (63) for orienting the magnetic block sample (62) is provided on the magnetic block orientation plate (61); the magnetic block sample (62) is fixed in the second placement hole (63) of the magnetic block orientation plate (61).

5. The three-pole magnetic block flux testing device according to claim 4, characterized in that: The first placement hole (51) and the second placement hole (63) both comprise an opening portion (511) extending horizontally from the outer wall of the plate to the interior and a positioning portion (512) matching the shape of the magnetic block; the positioning portion (512) of the first placement hole (51) is correspondingly arranged at the test contact plate (30), and the opening portion (511) gradually decreases in diameter from the outside to the inside and extends to the positioning portion (512).

6. The three-pole magnetic block flux testing device according to claim 1, characterized in that: The glue injection hole (11) includes a waist-shaped groove (111) with an opening facing upward and a through hole (112) provided at the bottom end of the waist-shaped groove (111) and vertically penetrating the through hole (112); the lower parts of the first magnetic flux component (31), the second magnetic flux component (32) and the third magnetic flux component (33) are located in the waist-shaped groove (111), and the first magnetic flux component (31), the second magnetic flux component (32) and the third magnetic flux component (33) are linearly arranged along the long axis direction of the waist-shaped groove (111), and the through hole (112) is connected to the bottom surface of the base (1).

7. The three-pole magnetic block flux testing device according to claim 1, characterized in that: After the glue is poured, the top surface of the housing (2) forms a horizontal flat surface (201), and the top surface of the test contact plate (30) is flush with the flat surface (201); the test positioning plate (5) is horizontally mounted on the flat surface (201).

8. The three-pole magnetic block flux testing device according to claim 1, characterized in that: The base (1) is further provided with an adjustable resistor (7), and the adjustable resistor (7) is electrically connected to the power supply (4) and the testing mechanism (3).

9. The three-pole magnetic block flux testing device according to claim 8, characterized in that: A power supply mounting hole (13) is vertically provided on the base (1); the power supply (4) is installed in the power supply mounting hole (13); the bottom of the power supply (4) is electrically connected to the bottom of the test mechanism (3) via a wire; a wiring groove (14) is provided on the bottom surface of the base (1) and is located between the power supply mounting hole (13) and the glue injection hole (11), and the wire is located in the wiring groove (14).

10. The three-pole magnetic block flux testing device according to claim 9, characterized in that: The bottom surface of the base (1) is further provided with a resistor mounting groove (15); the resistor mounting groove (15) and the glue injection hole (11) are respectively located on both sides of the power supply mounting hole (13), and the resistor mounting groove (15), the glue injection hole (11) and the power supply mounting hole (13) are on the same straight line, one end of the resistor mounting groove (15) is connected to the power supply mounting hole (13), and the other end of the resistor mounting groove (15) extends to the outer wall of the base (1); the adjustable resistor (7) is installed in the resistor mounting groove (15), and the adjustable resistor (7) is electrically connected to the power supply (4) and the test mechanism (3) through a wire.

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