CN114814679B - Device for detecting magnetism of soft magnetic material in real time under automatic stress application - Google Patents

Abstract

The invention discloses a real-time detection device for the magnetism of a soft magnetic material under the automatic stress application, which comprises a sample piece to be detected and a magnetism applying part, wherein the magnetism applying part comprises an upper magnetism applying part and a lower magnetism applying part which have the same structure; the two clamping pieces are positioned on two opposite sides of the magnetism applying part and used for clamping the sample piece to be measured, and any one clamping piece is stressed through the stress piece; the driving pieces are arranged on the other two sides of the magnetism applying part and are used for driving the upper magnetism applying piece to lift; the detection piece is arranged on one side, close to the upper magnetic applying piece, of the sample piece to be detected, and the detection piece is in contact with the sample piece to be detected. The invention can overcome the defects of the prior art and provides the automatic applying and real-time measuring device for the stress and the magnetic property of the large-size flaky soft magnetic material, which has the advantages of high precision, small volume, light weight, stable performance and real-time control.

Description

A real-time magnetic detection device for soft magnetic materials under automatic stress application

technical field

The invention relates to the technical field of magnetic properties and stress measurement, in particular to a real-time magnetic detection device for soft magnetic materials under automatic stress application.

Background technique

Sheet-like soft magnetic materials are widely used in large electrical equipment and electromagnetic mechanisms, such as motors, generators, transformers, etc., due to their small eddy current losses. In the actual application process, the magnetic properties of sheet soft magnetic materials, such as magnetic permeability, hysteresis loop, coercive force, etc., will be affected by stress. The source of stress is mostly shear force generated by electric cutting, assembly and turn The local thrust generated in the process of winding the coil, etc. The magnetic properties of soft magnetic materials affect the operating performance and work efficiency of large electrical equipment, so it is very important to accurately measure the magnetic properties of soft magnetic materials under the influence of stress.

At present, there are methods for testing the magnetic properties of soft magnetic materials, such as the Epstein square method, the ring sample method, and the single-chip measurement method. The probe is combined with the H coil to measure the magnetic properties of soft magnetic materials. In the patent (Ding Xiaofeng, Xiong Yanwen, Xiao Lihao, Guo Hong. A two-dimensional magnetic property measurement system and method of silicon steel sheet under controllable stress, CN104569875A), the two-dimensional magnetic property of silicon steel sheet is measured under controllable stress Measurement. In the patent (Zhang Dianhai, Jia Mengfan, Ren Ziyan, Zhang Yanli. Temperature and stress effect measurement device for vector magnetic properties of electrical steel sheets), the magnetic properties of cross-shaped electrical steel sheets are measured under different stresses and temperatures. In the patent (Li Yongjian, Zhang Wenting, Wan Zhenyu, Fu Yu, Yang Ming. A three-dimensional magnetic property measurement device suitable for electrical materials under stress loading), a method for measuring three-dimensional magnetic properties of electrical materials under stress is proposed. However, the above-mentioned patents do not realize the automatic control and closed-loop detection of stress. In addition, they do not involve the measurement of the magnetic properties of large-size flake soft magnetic materials under stress. To sum up, there are no related reports on the automatic application and real-time measurement of stress and magnetic properties for large-scale sheet soft magnetic materials.

Contents of the invention

The object of the present invention is to provide a real-time magnetic detection device for soft magnetic materials under automatic stress application, to solve the above-mentioned problems in the prior art, to overcome the deficiencies of the prior art, and to provide a device with high precision, small size, light weight, An automatic application and real-time measurement device for stress and magnetic properties of large-scale sheet soft magnetic materials with stable performance and real-time control.

In order to achieve the above object, the present invention provides the following scheme: the present invention provides a real-time detection device for the magnetic properties of soft magnetic materials under automatic stress, including the sample to be tested, and also includes,

The magnetizing part includes an upper magnetizing part and a lower magnetizing part with the same structure, and the tested sample is located between the upper magnetizing part and the lower magnetizing part;

There are two clamping pieces. The two clamping pieces are located on opposite sides of the magnetizing part. The two clamping pieces are used to clamp the tested sample. Any one of the clamping pieces The parts are stressed through the stress parts;

The driving part is arranged on the other two sides of the magnetizing part, and the driving part is used to drive the upper magnetizing part to go up and down;

The detection part is arranged on the side of the tested sample piece close to the upper magnetizing part, and the detection part is in contact with the tested sample piece.

Preferably, the upper magnetizing part includes a uniaxial yoke, and a low impedance winding is wound on the uniaxial yoke, and the low impedance winding is arranged corresponding to the tested sample, and the uniaxial yoke passes through The first non-magnetic clip is fixed, and the single-axis yoke is in transmission connection with the driving part through the second non-magnetic clip.

Preferably, the uniaxial yoke includes several C-shaped electrical steel sheets, and several C-shaped electrical steel sheets are stacked to form the uniaxial yoke, the first non-magnetic clamp is provided with two, and the two The first non-magnetic clips are respectively arranged on the two side walls of the uniaxial yoke, and the first non-magnetic clips include two oppositely arranged first U-shaped fixing parts, and the uniaxial yoke is located between two Between the first U-shaped fasteners, the two first U-shaped fasteners are fixedly connected.

Preferably, the second non-magnetic clip is arranged on the side of the first non-magnetic clip away from the tested sample, and the second non-magnetic clip includes two oppositely arranged second U-shaped fixing parts , the side wall of the uniaxial yoke is fixedly connected with a connecting plate, and the two second U-shaped fixing parts fix the connecting plate, and the inner wall of the second U-shaped fixing part and the uniaxial yoke There is a gap.

Preferably, the driving member includes two oppositely arranged lifting slides, a drive plate is fixedly connected to the movable end of the lifting slides, and a drive plate is fixedly connected to the side of the second U-shaped fixing member away from the single-axis yoke. The lifting plate, the driving plate is located above the lifting plate, and the top end of the driving plate abuts against the bottom end of the lifting plate.

Preferably, the clamping member includes an adjustable clamp, the tested sample is located in the clamp, and the tested sample is fixed by the clamp, and the clamp is fixed on a side away from the tested sample. A force arm is connected, and the force arm is connected with the stress member through a strain gauge adapter rod.

Preferably, the stress member includes a stress real-time detector, the real-time detector is connected to the strain gauge adapter rod, and the stress real-time detector exerts force on the tested sample through the stress gauge slide table, and the other A non-magnetic sliding table is fixedly attached to the side of the clamp away from the tested sample, and the non-magnetic sliding table is used to fix the other clamp.

Preferably, the probe includes a positioning substrate arranged on the tested sample, the bottom end of the positioning substrate is in contact with the top of the tested sample, and a magnetic measuring probe is detachably connected to the center of the positioning substrate. The magnetic measuring probe is in contact with the top of the tested sample.

Preferably, the positioning substrate includes two oppositely arranged placement plates, an X-shaped cross board is fixedly connected between the two placement boards, and a through groove is opened on the cross point of the X-shaped cross board, and the magnetic measuring probe It is located in the through slot, and the X-shaped cross plate supports the magnetic measurement probe.

Preferably, the top of the magnetic measurement probe is provided with a cover plate, and several fixing frames are detachably connected to the cover plate, and the fixing frames are located under the cover plate, and several of the fixing frames cooperate with the magnetic measurement The probe is fixed, and a sliding platform is slidably connected to the X-shaped cross plate, the sliding platform is located under the fixing frame, and the sliding platform supports the fixing frame.

The invention discloses the following technical effects:

1. Through the cooperation of clamping parts and stress parts, the automatic stress application structure and real-time detection technology are adopted for large-size sheet soft magnetic materials, which greatly improves the controllability and accuracy of stress application and reduces stress measurement errors. Reduce the energy consumption of stress application and increase the size measurement range of soft magnetic materials;

2. By setting the magnetic parts, adopting magnetic performance closed-loop control and real-time detection technology, based on the integrated signal of stress and magnetic performance, the output excitation is controlled, which greatly improves the measurement accuracy of the magnetic performance of large-size sheet soft magnetic materials under the action of stress, reducing the The magnetic performance measurement error is reduced, the anti-interference ability is improved, and the volume of the overall structure is further reduced.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the embodiments. Obviously, the accompanying drawings in the following description are only some of the present invention. Embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without paying creative labor.

Fig. 1 is the perspective view of detection device;

Fig. 2 is a partial enlarged view of place A in Fig. 1;

Fig. 3 is a perspective view of the connection relationship between the non-magnetic slide table and the fixture;

Fig. 4 is a perspective view of the lower magnetizing part;

Figure 5 is a perspective view of the fixture;

Fig. 6 is a perspective view of the connection relationship between the clamp and the magnetizer;

Figure 7 is a perspective view of the drive plate;

8 is a perspective view of the connection relationship between the positioning substrate and the magnetic measurement probe;

Among them, 1-tested sample, 2-uniaxial yoke, 3-low impedance winding, 4-first U-shaped fixing piece, 5-second U-shaped fixing piece, 6-connecting plate, 7-lifting slide table, 8-drive plate, 9-lift plate, 10-fixture, 11-force arm, 12-stress gauge adapter rod, 13-stress real-time detection gauge, 14-non-magnetic slide table, 15-positioning base plate, 16-magnetic measurement Probe, 17-placement plate, 18-X type cross plate, 19-cover plate, 20-non-magnetic screw, 21-fixing frame, 22-sliding table, 23-non-magnetic yoke base, 24-height adjustment waist hole, 25 - Chutes, 26-strain gage slides.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Referring to Figures 1-8, the present invention provides a real-time magnetic detection device for soft magnetic materials under automatic stress application. The sample to be tested 1 is located between the upper magnetizing part and the lower magnetizing part; there are two clamping parts, and the two clamping parts are located on opposite sides of the magnetizing part, and the two clamping parts are used to hold the tested sample 1 For clamping, any clamping part is stressed by the stress part; the driving part is arranged on the other two sides of the magnetizing part, and the driving part is used to drive the upper magnetizing part to rise and fall; the detecting part is arranged on the top of the tested sample 1 On one side of the magnetizing part, the detecting part is in contact with the tested sample 1.

During the test, the tested sample 1 is fixed by two clamping parts, and the tested sample 1 is placed between the upper magnetizing part and the lower magnetizing part, wherein the upper magnetizing part is under the action of the driving part Lifting, so that the upper magnetizing part is in contact with the tested sample 1, but no additional stress is applied to the surface of the tested sample 1. A stress piece is connected to one of the clamping pieces, a pushing or pulling force is applied to the clamping piece through the stress piece, and the applied force is measured through the stress piece. During this process, the detection piece monitors the tested sample piece 1 to obtain the Data required.

In one embodiment of the present invention, a non-magnet yoke base 23 is disposed below the lower magnetizing member. The existence of the non-magnet yoke base 23 supports and fixes the lower magnetizing part.

To further optimize the scheme, the upper magnetic part includes a uniaxial yoke 2, and a low-impedance winding 3 is wound on the uniaxial yoke 2, and the low-impedance winding 3 is arranged correspondingly to the tested sample 1, and the uniaxial yoke 2 passes through the first The magnetic clip is fixed, and the single-axis yoke 2 is connected to the driving part through the second non-magnetic clip. The structure of the upper magnetizing part and the lower magnetizing part are the same, and the two are arranged opposite to each other. The upper magnetizing part is connected with the driving part, and the lower magnetizing part is connected with the non-magnet yoke base 23. The single-axis yoke 2 and the low impedance winding 3 The existence of the test can be carried out normally. The second non-magnetic clamp binds and fixes the uniaxial yoke 2, while the second non-magnetic clamp fixes the uniaxial yoke 2 on the one hand, and on the other hand, the second non-magnetic clamp The driving part is connected with the driving part, and the driving part drives the second non-magnetic clip part up and down, thereby driving the single-axis yoke 2 up and down.

In one embodiment of the present invention, the material of the first non-magnetic clip and the second non-magnetic clip is preferably cast aluminum.

In one embodiment of the present invention, the low-impedance winding 3 is formed by winding multiple layers of low-resistance enamelled copper wires, and insulating paper is wrapped between the layers to prevent the enameled wires from short-circuiting.

To further optimize the scheme, the uniaxial magnetic yoke 2 includes several C-shaped electrical steel sheets, and several C-shaped electrical steel sheets are superimposed to form the uniaxial magnetic yoke 2. There are two first non-magnetic clamps, and the two first non-magnetic clamps are respectively It is arranged on the two side walls of the uniaxial yoke 2, the first non-magnetic clip includes two oppositely arranged first U-shaped fixing pieces 4, the uniaxial yoke 2 is located between the two first U-shaped fixing pieces 4, and the two The first U-shaped fixing part 4 is fixedly connected. A plurality of C-shaped electrical steel sheets are stacked together. The C-shaped electrical steel sheet includes a plane and two vertical surfaces perpendicular to the plane. Two first U-shaped fixing parts 4 are fixed on the two vertical surfaces. A U-shaped fixing piece 4 is connected to fix multiple C-shaped electrical steel sheets, and the low-impedance winding 3 is wound on a plane.

In one embodiment of the present invention, the two first U-shaped fixing parts 4 are fixed by connecting bolts.

In an embodiment of the present invention, the C-shaped electrical steel sheet preferably adopts a C-shaped structure.

In a further optimization scheme, the second non-magnetic clamp is arranged on the side of the first non-magnetic clamp away from the test sample 1, the second non-magnetic clamp includes two oppositely arranged second U-shaped fixtures 5, and a single-axis yoke 2 A connecting plate 6 is fixedly connected to the side wall, and two second U-shaped fixing pieces 5 fix the connecting plate 6 , and there is a gap between the inner wall of the second U-shaped fixing piece 5 and the uniaxial magnetic yoke 2 . The single-axis yoke 2 is located between the two second U-shaped fixing parts 5, and the two second U-shaped fixing parts 5 are fixed by another connecting bolt, so that the single-axis yoke 2 formed by superimposing the connecting plate 6 is fixed. The presence of the plate 6 makes a gap exist between the second U-shaped fixture 5 and the single-axis yoke 2 , and the gap is used for passing the low-impedance winding 3 .

To further optimize the scheme, the driving part includes two oppositely arranged lifting slides 7, the movable end of the lifting slides 7 is fixedly connected with a transmission plate 8, and the side of the second U-shaped fixing part 5 away from the single-axis yoke 2 is fixedly connected with a lifting plate 9. The transmission plate 8 is located above the lifting plate 9, and the top end of the transmission plate 8 abuts against the bottom end of the lifting plate 9. Lifting slide table 7 lifts, because drive plate 8 is in contact with lift plate 9, so lift plate 9 rises and falls under the action of drive plate 8, and lift plate 9 drives the second U-shaped fixing part to drive single-axis yoke 2 to lift.

In one embodiment of the present invention, the lifting slide 7 is preferably, but not limited to, an electric control slide or a pneumatic control slide, which is preferably able to drive the transmission plate 8 up and down.

In one embodiment of the present invention, the side of the transmission plate 8 is provided with a first screw hole, the setting of the first screw hole facilitates the connection between the transmission plate 8 and the lifting slide 7, and the top surface of the transmission plate 8 is provided with a second screw hole , the setting of the second screw hole facilitates the connection between the transmission plate 8 and the lifting plate 9 .

In an embodiment of the present invention, the second U-shaped fixing member and the lifting plate 9 are preferably integrally formed, which facilitates the production of both and improves the connection strength of the two.

In a further optimization scheme, the clamping member includes an adjustable clamp 10, the tested sample 1 is located in the clamp 10, and the tested sample 1 is fixed by the clamp 10, and the side of the clamp 10 away from the tested sample 1 is fixed with a force arm 11, and the force The arm 11 is connected to the stress piece through a strain gauge adapter rod 12 . The force arm 11 is relatively long, so that the force transmitted by the strain gauge adapter rod 12 can be more evenly distributed on the clamp 10 , and then a more uniform pulling or pushing force can be applied to the tested sample 1 .

In one embodiment of the present invention, the jig 10 includes an upper splint and a lower splint, the sample to be tested 1 is located between the upper splint and the lower splint, and the upper splint and the lower splint are connected by fixing bolts. Such an arrangement can easily replace the tested sample 1 and is applicable to tested samples 1 with different thicknesses.

Further, the moment arm 11 is fixed to the lower splint through locking bolts. When the tested sample piece 1 needs to be replaced, only the upper splint needs to be disassembled.

To further optimize the scheme, the stress member includes a stress real-time detector 13, the real-time detector is connected to the strain gauge adapter rod 12, the stress real-time detector 13 exerts force on the tested sample 1 through the stress gauge slide 26, and the other clamp 10 is far away from the stress gauge. One side of the sample piece 1 is fixedly connected with a non-magnetic sliding table 14 , and the non-magnetic sliding table 14 is used to fix another clamp 10 . One of the clamps 10 is connected to the non-magnetic slide table 14, and the non-magnetic slide table 14 is used to fix the clamp 10, and the other clamp is connected to the stress real-time detector 13 through the strain gauge adapter rod 12, and the data of the stress real-time detector 13 is exported to the data acquisition device (not shown in the figure), and the data acquisition device controls the movement of the strain gauge sliding table 26 through negative feedback based on the data of the real-time stress detector 13, so as to realize real-time measurement and precise closed-loop control of stress.

In one embodiment of the present invention, the non-magnetic slide table 14 is provided with a waist hole for height adjustment. The non-magnetic slide table 14 is equipped with a height-adjustable waist hole, which is suitable for fixing test samples 1 of different thicknesses.

Further, the above-mentioned real-time stress detector 13, strain gauge slide 26, and data acquisition device can adopt existing technologies, and their connection relationship and usage methods belong to existing technologies, and will not be repeated here.

In one embodiment of the present invention, a threaded hole is opened in the strain gauge adapter rod 12, through which the real-time stress detector 13 is connected.

To further optimize the scheme, the probe includes a positioning substrate 15 arranged on the tested sample 1, the bottom of the positioning substrate 15 is in contact with the top of the tested sample 1, and the center of the positioning substrate 15 is detachably connected with a magnetic measuring probe 16, and the magnetic measuring probe 16 Contact with the top of the test piece 1. By setting the positioning base plate 15, the magnetic measurement probe 16 can be quickly and accurately installed at the center of the test sample 1, thereby improving test efficiency and test accuracy.

The magnetic measurement probe 16 is provided with a gold-plated copper probe for magnetic flux density measurement and a multi-layer winding coil for magnetic field strength measurement. The detection signal of the magnetic measurement probe 16 is transmitted to the data acquisition device through amplification and filtering, and the data acquisition device Based on the PI principle, the output excitation voltage waveform signal is controlled. The excitation voltage signal is amplified by the power amplifier and then loaded to the low impedance winding 3 to control the external magnetic field applied to the tested sample 1, and then the stress is automatically applied to accurately control and real-time the magnetic properties of the soft magnetic material. detection.

To further optimize the solution, the positioning substrate 15 includes two oppositely arranged placement plates 17, an X-shaped cross plate 18 is fixedly connected between the two placement plates 17, and a through groove is opened on the cross point of the X-shaped cross plate 18, and the magnetic measurement probe 16 is located at In the through groove, and the X-shaped cross plate 18 supports the magnetic measuring probe 16. The two placement plates 17 position the X-type cross plate 18, so that the cross position of the X-type cross plate 18 is the center position of the tested sample piece 1, and a through groove is opened at this position, and the magnetic measuring probe 16 is located in the through groove, and The magnetic measuring probe 16 is supported by the X-shaped cross plate 18 so that the magnetic measuring probe 16 can work normally.

To further optimize the scheme, the top of the magnetic measuring probe 16 is provided with a cover plate 19, and the cover plate 19 is detachably connected with several fixing frames 21, the fixing frames 21 are located below the cover plate 19, and the several fixing frames 21 cooperate to fix the magnetic measuring probe 16 , the X-shaped cross plate 18 is slidably connected with a slide table 22 , the slide table 22 is located below the fixed frame 21 , and the slide table 22 supports the fixed frame 21 . A plurality of fixed frames 21 support the magnetic measuring probes 16, and the sliding platform 22 moves, which is suitable for positioning and supporting the magnetic measuring probes 16 of different sizes. The measurement signal from the magnetic measurement probe 16 is processed by PI to control the excitation voltage signal, so as to realize real-time measurement and closed-loop control of the magnetic field.

In one embodiment of the present invention, the top of the cover plate 19 is provided with a plurality of sliding grooves 25, and non-magnetic screws 20 are slidingly connected in the sliding grooves 25. It is threadedly connected with the fixing frame 21. By rotating the non-magnetic screw 20 , the magnetic measurement probe 16 is clamped by a plurality of fixing frames 21 , and with the cooperation of the slide table 22 , it is ensured that the magnetic measurement probe is in contact with the sample 1 to be tested.

Experimental procedure:

The tested sample 1 is placed between the upper magnetizing part and the lower magnetizing part, and the tested sample 1 is clamped and fixed by two clamps 10, and the force arm 11 is connected to one clamp 10, and the other clamp 10 is connected to the The magnetic slide table 14, then install the placement plate 17 and the X-shaped cross plate 18 on the top of the tested sample 1, both of which are in close contact with the top of the tested sample 1, and then put the magnetic measurement probe in the through groove of the X-shaped cross plate 18 16. Adjust the height through the non-magnetic screw 20 and the sliding table 22. After the position height adjustment of the magnetic measuring probe 16 is completed, use the lifting slide table 7 to control the movement of the upper magnetic part. After the upper magnetic part is in contact with the tested sample 1, Start experimenting.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, be constructed, and operate in a particular orientation.

The above-mentioned embodiments are only to describe the preferred mode of the present invention, not to limit the scope of the present invention. Without departing from the design spirit of the present invention, those skilled in the art may make various Variations and improvements should fall within the scope of protection defined by the claims of the present invention.

Claims (5)

1. The utility model provides a soft magnetic material magnetism real-time detection device under stress automatic application, includes by survey sample wafer (1), its characterized in that: also comprises the following steps of (1) preparing,

the magnetic applying part comprises an upper magnetic applying part and a lower magnetic applying part which have the same structure, the sample to be measured (1) is positioned between the upper magnetic applying part and the lower magnetic applying part, and the upper magnetic applying part is lifted through a driving part;

the two clamping pieces are positioned on two opposite sides of the Shi Ci part and used for clamping the sample piece (1) to be measured, and any clamping piece is stressed through a stress piece;

the detecting piece is arranged on one side, close to the upper magnetism applying piece, of the sample piece (1) to be detected, and the detecting piece is in contact with the sample piece (1) to be detected;

the upper magnetizing part comprises a single-shaft magnetic yoke (2), a low-impedance winding (3) is wound on the single-shaft magnetic yoke (2), the low-impedance winding (3) is arranged corresponding to the sample piece (1) to be measured, the single-shaft magnetic yoke (2) is fixed through a first nonmagnetic clamping part, and the single-shaft magnetic yoke (2) is in transmission connection with the driving part through a second nonmagnetic clamping part;

the single-shaft magnetic yoke (2) comprises a plurality of C-shaped electric steel sheets, the C-shaped electric steel sheets are overlapped to form the single-shaft magnetic yoke (2), two first nonmagnetic clamping pieces are arranged on two side walls of the single-shaft magnetic yoke (2), each first nonmagnetic clamping piece comprises two first U-shaped fixing pieces (4) which are arranged oppositely, the single-shaft magnetic yoke (2) is located between the two first U-shaped fixing pieces (4), and the two first U-shaped fixing pieces (4) are fixedly connected;

the detection piece comprises a positioning substrate (15) arranged on the sample piece (1) to be detected, the bottom end of the positioning substrate (15) is contacted with the top end of the sample piece (1) to be detected, the center of the positioning substrate (15) is detachably connected with a magnetic measurement probe (16), and the magnetic measurement probe (16) is contacted with the top end of the sample piece (1) to be detected;

the positioning base plate (15) comprises two oppositely arranged placing plates (17), an X-shaped cross plate (18) is fixedly connected between the two placing plates (17), a through groove is formed in the cross point of the X-shaped cross plate (18), the magnetic measuring probe (16) is located in the through groove, and the X-shaped cross plate (18) supports the magnetic measuring probe (16);

magnetism measuring probe (16) top is provided with apron (19), can dismantle on apron (19) and be connected with a plurality of mount (21), mount (21) are located apron (19) below, and a plurality of mount (21) cooperation is right magnetism measuring probe (16) are fixed, sliding connection has slip table (22) on X type cross board (18), slip table (22) are located mount (21) below, just slip table (22) are right mount (21) support.

2. The real-time magnetic detection device for soft magnetic materials under automatic stress application according to claim 1, characterized in that: the second does not have the magnetism folder setting and is in first does not have magnetism folder and keeps away from one side of surveyed sample piece (1), the second does not have magnetism folder includes two relative second U type mounting (5) that set up, unipolar yoke (2) lateral wall rigid coupling has even board (6), two second U type mounting (5) are right even board (6) are fixed, second U type mounting (5) inner wall with there is the clearance between unipolar yoke (2).

3. The real-time magnetic detection device for soft magnetic materials under automatic stress application according to claim 2, characterized in that: the driving piece comprises two opposite lifting sliding tables (7), the movable end of each lifting sliding table (7) is fixedly connected with a transmission plate (8), the second U-shaped fixing piece (5) is far away from one side of the single-shaft magnetic yoke (2) and is fixedly connected with a lifting plate (9), the transmission plate (8) is located above the lifting plate (9), and the top end of the transmission plate (8) is abutted against the bottom end of the lifting plate (9).

4. The real-time magnetic detection device for soft magnetic materials under automatic stress application according to claim 1, characterized in that: the clamping part comprises an adjustable clamp (10), the measured sample piece (1) is located in the clamp (10), the measured sample piece (1) is fixed through the clamp (10), one side of the measured sample piece (1) far away from the clamp (10) is fixedly connected with a force arm (11), and the force arm (11) is connected with the stress part through a stress meter adapter rod (12).

5. The real-time magnetic detection device for soft magnetic materials under automatic stress application according to claim 4, characterized in that: stress spare includes stress real-time detection meter (13), real-time detection meter with stress meter changeover lever (12) are connected, stress real-time detection meter (13) are right through stress meter slip table (26) by survey sample piece (1) application of force, another anchor clamps (10) are kept away from by one side rigid coupling of survey sample piece (1) has no magnetism slip table (14), no magnetism slip table (14) are used for another anchor clamps (10) are fixed.

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