A nanocrystalline iron core stability test equipment

Abstract

The present invention relates to a nanocrystalline iron core stability test device, comprising a base, a vibration base, a second conical pad, a resistance detector, and a controller. By utilizing the coordination of an eccentric gear and an end gear, a dual-axis motor can drive the vibration base to vibrate, thereby vibrating the nanocrystalline iron core mounted on the vibration base. The amplitude and frequency of the vibration can be adjusted by utilizing the coordination of an adjustment mechanism and the dual-axis motor. During this process, a sliding rod drives a piston to slide back and forth within a cylinder, continuously delivering air into the cylinder for heating and then delivering it to a heat-insulating cover, thereby heating the nanocrystalline iron core. During this process, a noise sensor can detect the noise of the nanocrystalline iron core, and two conductive rods can detect the resistance between the inner and outer walls of the nanocrystalline iron core. This allows the present invention to monitor the noise of the nanocrystalline iron core and the leakage between nanocrystalline strips during the vibration and heating process.

Description

Technical Field

[0001] The invention belongs to the technical field of testing equipment, and in particular relates to a nanocrystalline iron core stability testing device. Background Art

[0002] Nanocrystalline iron cores have the advantages of high initial magnetic permeability, low core loss, high saturation magnetic induction intensity and good high-frequency characteristics. Therefore, in practical applications, nanocrystalline iron cores can be used to manufacture electromagnetic induction cores for inductors, transformers, wireless charging devices, etc., especially in the fields of new energy vehicles, mobile phone wireless charging, motor energy saving, etc. Nanocrystalline iron cores are a new type of soft magnetic alloy obtained by uniformly precipitating grains with a particle size of 10 to 20 nanometers on an amorphous matrix through a heat treatment process. During the processing of nanocrystalline iron cores, the processed nanocrystalline strips need to be wound into a cylindrical or ring shape, and during the winding process, a curing agent needs to be filled between the strips to play a role in fixed connection and insulation.

[0003] Nanocrystalline iron cores inevitably experience vibration and high temperatures. Long-term use in these conditions can lead to loosening or unusual noises between the wound strips. Therefore, to test and verify the operational stability of newly produced batches or newly designed nanocrystalline iron cores, a nanocrystalline iron core stability test device was proposed. This device can effectively test the operational stability of nanocrystalline iron cores. Summary of the Invention

[0004] The present invention provides a nanocrystalline iron core stability test device, which can effectively test the working stability of the nanocrystalline iron core.

[0005] The technical solution adopted by the present invention is:

[0006] A nanocrystalline iron core stability test device includes a base, a vibration base, a conical pad, a resistance detector and a controller. The upper surface of the base is provided with a dual-axis motor and a U-shaped frame. The output shaft of the dual-axis motor is connected to an eccentric gear through an adjustment mechanism. The adjustment mechanism can adjust the distance between the output shaft of the dual-axis motor and the center of the eccentric gear. The eccentric gear is meshed with an end gear. A slide rod is provided on the upper surface of the end gear. A rebound mechanism is connected between the slide rod and the U-shaped frame to keep the end gear and the eccentric gear in meshing. The slide rod is provided with an active A plug, a ring magnet is provided in the piston, a cylinder body is provided on the sliding sleeve of the piston, the cylinder body is connected to the top of the U-shaped frame, the sliding rod is movably provided on the top of the cylinder body and the top of the U-shaped frame, a coil is provided in the side wall of the cylinder body, an intake one-way valve and an exhaust one-way valve are provided on the side wall of the cylinder body, a PTC heating element is provided in the cylinder body at the intake one-way valve, the exhaust one-way valve is connected to a shunt pipe, the shunt pipe is connected to a hard pipe one, the hard pipe one is provided on the top of the U-shaped frame, and the upper end of the hard pipe one is slidably connected to a hard pipe two;

[0007] The two sides of the lower surface of the vibration seat are rotatably connected to the upper ends of the two sliding rods, and the hard tube second is penetrated by the vibration seat, and a nut, a conical pad, a noise sensor, an elastic mechanism and a conical pad are sequentially provided on the hard tube second from top to bottom, and the nut is threadably connected to the hard tube second, and the conical pad one is movably sleeved on the hard tube one, and the conical pad two is sleeved on the hard tube two, and the bottom of the conical pad two is connected to the upper surface of the vibration seat, and the elastic mechanism one is connected to the conductive rod, after the nanocrystalline iron core is sleeved on the upper end of the hard tube two, the lower end of the nanocrystalline iron core is against the conical pad two, and the conical pad one is driven to press the upper end of the nanocrystalline iron core by rotating the nut. A temperature sensor and an electric push rod one are provided on the upper surface of the vibration seat, and the telescopic end of the electric push rod one is connected to the conductive rod through the elastic mechanism two, and the conductive rods inside and outside the nanocrystalline iron core are respectively against its inner and outer side surfaces, and a detachable heat preservation cover is provided on the vibration seat;

[0008] The controller and the resistance detector are both arranged on a U-shaped frame. The controller is electrically connected to the coil, the PTC heating element and the temperature sensor; and the resistance detector is electrically connected to the conductive rod.

[0009] Furthermore, the adjustment mechanism includes a slide groove provided on the end face of the eccentric gear, the slide groove passes through the center of the eccentric gear, and an electric push rod 2 and a slider 1 are provided in the slide groove. The telescopic end of the electric push rod 2 is connected to the slider 1, and the output shaft of the dual-axis motor is connected to the slider 1.

[0010] Furthermore, the rebound mechanism includes a support 1 arranged on the side wall of the U-shaped frame, a swivel is rotatably provided on the lower surface of the support 1, the slide rod is movably passed through the support 1, a spring 1 is abutted between the upper surface of the end face gear and the lower surface of the swivel, and the spring is set on the slide rod.

[0011] Furthermore, there are multiple elastic mechanisms 1, and the multiple elastic mechanisms 1 are respectively and spaced apart on the outer wall of the second rigid tube.

[0012] Furthermore, the elastic mechanism 1 includes a sleeve arranged on the outer wall of the hard tube 2, a slider 2 is provided in the sleeve, a spring 2 is connected between one end face of the slider 2 and the end wall of the sleeve, the conductive rod is connected to the other end face of the slider 2, and the conductive rod is slidably penetrated on the end wall of the sleeve away from the spring 2.

[0013] Furthermore, the second elastic mechanism includes a sleeve provided at a telescopic end of an electric push rod, a second slider is provided in the sleeve, a second spring is connected between one end face of the second slider and an end wall of the sleeve, the second conductive rod is connected to the other end face of the second slider, and the second conductive rod is slidably provided on the end wall of the sleeve away from the second spring.

[0014] Furthermore, the heat-insulating cover is provided with a second exhaust one-way valve.

[0015] Furthermore, an electromagnetic sensor is provided on the outer wall of the second hard tube. When the nanocrystalline iron core is installed on the second hard tube, the electromagnetic sensor is located inside the nanocrystalline iron core.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] By utilizing the coordination of an eccentric gear and an end gear, a dual-axis motor can drive a vibration base to vibrate, thereby vibrating a nanocrystalline iron core mounted on the vibration base. The amplitude and frequency of the vibration can be adjusted by cooperating with an adjustment mechanism and the dual-axis motor, making the device suitable for conducting vibration tests of varying intensities. During this process, a piston is driven to slide back and forth within a cylinder by a sliding rod. The piston drives an annular magnet relative to a coil, causing the coil to induce current and supply power to a PTC heating element. The piston continuously delivers air into the cylinder, heating it before delivering it into a heat-insulating cover, thereby heating the nanocrystalline iron core. During this process, a noise sensor can detect the noise of the nanocrystalline iron core, and two conductive rods can detect the resistance between the inner and outer walls of the nanocrystalline iron core. This allows the present invention to monitor the noise of the nanocrystalline iron core and the leakage between nanocrystalline strips during the vibration and heating process. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of point A in the figure;

[0020] Figure 3 for Figure 1 Enlarged view of point B in FIG.

[0021] Figure 4 for Figure 1 Enlarged view of point C in the figure;

[0022] Figure: 1. Eccentric gear; 2. Electric push rod 2; 3. Slide; 4. Slider 1; 5. Face gear; 6. Spring 1; 7. Swivel; 8. Support 1; 9. Slider; 10. Dual-axis motor; 11. U-shaped frame; 12. Base; 13. Hard pipe 1; 14. Controller; 15. Vibration seat; 16. Temperature sensor; 17. Insulation cover; 18. Conical washer 2; 19. Iron core; 20. Conical washer 1; 21. Nut; 22 , resistance tester; 23. shunt pipe; 24. hard pipe 2; 25. exhaust check valve 2; 26. spring 2; 27. noise sensor; 28. electromagnetic sensor; 29. ​​conductive rod; 30. sleeve; 31. slider 2; 32. support 2; 33. electric push rod 1; 34. cylinder; 35. PTC heating element; 36. intake check valve; 37. ring magnet; 38. exhaust check valve 1; 39. coil; 40. piston. DETAILED DESCRIPTION

[0023] In order to better understand the technical content of the present invention, specific embodiments are provided below, and the present invention is further described in conjunction with the accompanying drawings.

[0024] See also Figures 1 to 4 The present invention provides a nanocrystalline iron core stability test device, including a base 12, a vibration base 15, a conical pad 18, a resistance detector 22, and a controller 14. A dual-axis motor 10 and a U-shaped frame 11 are provided on the upper surface of the base 12. The dual-axis motor 10 is fixedly arranged in the middle of the upper surface of the base 12 and is located inside the U-shaped frame 11. The output shaft of the dual-axis motor 10 is connected to an eccentric gear 1 through an adjustment mechanism. The adjustment mechanism can adjust the distance between the output shaft of the dual-axis motor 10 and the center of the eccentric gear 1. The eccentric gear 1 is meshed with an end gear 5. A slide bar 9 is fixedly provided in the middle of the upper surface of the end gear 5. A rebound mechanism is connected between the slide bar 9 and the U-shaped frame 11. The rebound mechanism can maintain the engagement between the end gear 5 and the eccentric gear 1. A piston 40 is fixedly sleeved on the slide rod 9, and a ring magnet 37 is provided in the piston 40. A cylinder body 34 is slidingly sleeved on the piston 40. The top of the cylinder body 34 is fixedly connected to the top of the U-shaped frame 11. The slide rod 9 is movably penetrated through the top of the cylinder body 34 and the top of the U-shaped frame 11. A coil 39 is provided in the side wall of the cylinder body 34. An intake check valve 36 and an exhaust check valve 38 are provided on the side wall of the cylinder body 34. A PTC heating element 35 is provided in the cylinder body 34 at the intake check valve 36. The exhaust check valve 38 is connected to a shunt pipe 23. The shunt pipe 23 is connected to a hard pipe 13. The hard pipe 13 is penetrated on the top of the U-shaped frame 11. The hard pipe 13 is fixedly connected to the top of the U-shaped frame 11, and the upper end of the hard pipe 13 is slidably connected to the hard pipe 24.

[0025] When the dual-axis motor 10 drives the eccentric gear 1 to rotate through the adjustment mechanism, the eccentric gear 1 will drive the end gear 5 to move up and down during the rotation under the action of the rebound mechanism, so that the end gear 5 will drive the slide rod 9 to slide vertically and rotate on the top of the cylinder body 34 and the top of the U-shaped frame 11. During this process, the slide rod 9 drives the piston 40 to slide and rotate vertically in the cylinder body 34. The piston 40 drives the annular magnet 37 relative to the coil 39, so that the coil 39 induces current and supplies power to the PTC heating element 35 for heating. When the piston 40 slides downward, the intake check valve 36 opens and the exhaust check valve 38 closes, and the external air flows into the cylinder body 34 through the intake check valve 36, and the air passes through the PTC heating element and is heated. When the piston 40 slides upward, the intake check valve 36 closes and the exhaust check valve 38 opens, and the heated air in the cylinder body 34 flows into the diverter pipe 23 through the exhaust check valve 38.

[0026] The two sides of the lower surface of the vibration seat 15 are respectively connected to the upper ends of the two slide bars 9, and the hard tube 24 is passed through the vibration seat 15. The hard tube 24 is provided with a nut 21, a conical pad 20, a noise sensor 27, an elastic mechanism 1 and a conical pad 2 18 from top to bottom. The outer wall of the upper end of the hard tube 24 is provided with an external thread. The nut 21 is threadedly connected to the hard tube 24. The conical pad 20 is movably sleeved on the hard tube 13. The conical pad 2 18 is fixedly sleeved on the hard tube 24. The bottom of the conical pad 2 18 is fixedly connected to the upper surface of the vibration seat 15. The conical pad 20 and the conical pad The two 18 are made of rubber material, which is conducive to improving the fixing effect. The elastic mechanism is connected to the conductive rod 29. After the nanocrystalline iron core 19 is sleeved on the upper end of the hard tube 24, the elastic mechanism can drive the conductive rod 29 to the inner wall of the nanocrystalline iron core 19. The lower end of the nanocrystalline iron core 19 is against the conical pad 2 18. By rotating the nut 21, the conical pad 20 is driven to press on the upper end of the nanocrystalline iron core 19, which can facilitate the fixing of the nanocrystalline iron core 19 on the vibration seat 15. The upper surface of the vibration seat 15 is fixed with a temperature sensor 16 and an electric push rod 33. The telescopic movement of the electric push rod 33 The end is connected to the conductive rod 29 through the elastic mechanism 2. When the nanocrystalline iron core 19 is fixed, the electric push rod 1 33 is used to drive the conductive rod 29 to the outer wall of the nanocrystalline iron core 19 through the elastic mechanism 2, so that the conductive rods 29 inside and outside the nanocrystalline iron core 19 are respectively against the inner and outer side surfaces thereof. The inner and outer conductive rods 29 are connected to the resistance detector 22 through soft wires. The controller 14 and the resistance detector 22 are both arranged on the U-shaped frame 11. The controller 14 is electrically connected to the coil 39, the PTC heating element 35 and the temperature sensor 16. During the detection process, the temperature sensor 16 is used to detect the resistance of the nanocrystalline iron core 19. The temperature inside the heat preservation cover 17 is detected and transmitted to the controller 14. When the temperature reaches a preset value, the controller 14 controls the coil 39 to stop supplying power to the PTC heating element 35, which can control the heating temperature. The controller 14 puts the coil 39 in an off-circuit state to avoid electromagnetic resistance during the vibration process, thereby achieving energy-saving effects. A detachable heat preservation cover 17 is provided on the vibration base 15. Specifically, the heat preservation cover 17 is threadedly connected to the vibration base 15, which is convenient for disassembly and assembly of the heat preservation cover 17. After the nanocrystalline iron core 19 is installed, the heat preservation cover 17 is installed on the vibration base 15 to avoid heat loss.

[0027] The two slide bars 9 are used to synchronously drive the vibration seat 15 to vibrate through both sides, and the vibration seat 15 drives the hard tube 24 to slide in the hard tube 1 13, so that the hard tube 24 and the hard tube 1 13 are connected, so that the hot air flows into the hard tube 1 13 through the shunt pipe 23, and then flows into the hard tube 2 24 through the hard tube 1 13, and then flows into the heat preservation cover 17 through the hard tube 2 24 to heat the nanocrystalline iron core 19. The nanocrystalline iron core 19 can be heated and vibrated at the same time. During the test, since the noise sensor 27 is arranged on the inner side of the nanocrystalline iron core 19, and due to the cone The first conical pad 20 and the second conical pad 18 are both made of rubber material, which has good sound insulation effect and can reduce the noise sensor 27 detecting the outer wall noise and affecting the detection effect, so that the noise sensor 27 can be effectively used to detect the noise generated by the nanocrystalline iron core 19 during the test. The two conductive rods 29 are used to detect the resistance value between the inner and outer walls of the nanocrystalline iron core 19 and transmit it to the resistance detector 22. During the test, when the curing agent between the nanocrystalline strips is worn or dropped, the adjacent coils of the nanocrystalline strips will conduct electricity, reducing the resistance value between the inner and outer walls of the nanocrystalline. This allows the present invention to monitor the noise of the nanocrystalline iron core 19 and the leakage between the nanocrystalline strips during vibration and heating.

[0028] Preferably, the adjustment mechanism includes a slide groove 3 provided on the end surface of the eccentric gear 1, the slide groove 3 passes through the center of the eccentric gear 1, and an electric push rod 2 and a slider 1 4 are provided in the slide groove 3. The electric push rod 2 is fixedly provided on the end wall of the slide groove 3, and the telescopic end of the electric push rod 2 is fixedly connected to the slider 1 4. The slider 1 4 is slidably connected to the slide groove 3, and the output shaft of the dual-axis motor 10 is fixedly connected to the slider 1 4;

[0029] By using the electric push rod 2 to drive the slider 1 4 to slide in the slide groove 3, the distance between the output shaft of the dual-axis motor 10 and the center of the eccentric gear 1 can be adjusted. When the distance increases, the amplitude increases, and when the distance decreases, the amplitude decreases.

[0030] Preferably, the rebound mechanism includes a support 8 fixedly mounted on the side wall of the U-shaped frame 11, a swivel 7 rotatably mounted on the lower surface of the support 8, a slide rod 9 movably passed through the support 8, a spring 6 abutting between the upper surface of the end gear 5 and the lower surface of the swivel 7, and the spring 6 sleeved on the slide rod 9;

[0031] When the slide bar 9 rotates and moves vertically on the support 8, the end gear 5 drives the swivel 7 to rotate on the lower surface of the support 8 through the spring 6. The rebound force of the spring 6 causes the end gear 5 to have a downward movement trend, so that the end gear 5 remains engaged with the eccentric gear 1.

[0032] Preferably, the number of the elastic mechanism 1 is 2, and the 2 elastic mechanisms are symmetrically arranged on the outer wall of the hard tube 24;

[0033] When installing the nanocrystalline core 19 , two more elastic mechanisms are used to drive the two conductive rods 29 against the inner wall of the nanocrystalline core 19 for pre-positioning, which can facilitate the nanocrystalline core 19 to be well fixed by the conical pad 1 20 and the conical pad 2 18 .

[0034] Preferably, the first elastic mechanism includes a sleeve 30 fixedly mounted on the outer wall of the second hard tube 24, a second slider 31 slidably mounted in the sleeve 30, a second spring 26 connected between one end surface of the second slider 31 and the end wall of the sleeve 30, a conductive rod 29 connected to the other end surface of the second slider 31, and the conductive rod 29 slidably penetrates the end wall of the sleeve 30 away from the second spring 26;

[0035] When the nanocrystalline iron core 19 is installed, the resilience of the second spring 26 is used to drive the second slider 31 to slide in the sleeve 30, and the second slider 31 drives the conductive rod 29 to move toward the inner side of the nanocrystalline iron core 19, thereby maintaining good contact between the conductive rod 29 and the inner side of the nanocrystalline iron core 19.

[0036] Preferably, the second elastic mechanism includes a sleeve 30 fixed to the telescopic end of the first electric push rod 33, a second support 32 is fixed on the vibration seat 15, the first electric push rod 33 is fixed on the second support 32, a second slider 31 is slidably provided in the sleeve 30, a second spring 26 is connected between one end surface of the second slider 31 and the end wall of the sleeve 30, a conductive rod 29 is connected to the other end surface of the second slider 31, and the conductive rod 29 is slidably provided on the end wall of the sleeve 30 away from the second spring 26;

[0037] When the nanocrystalline core 19 is installed, the resilience of the second spring 26 is used to drive the second slider 31 to slide in the sleeve 30, and the second slider 31 drives the conductive rod 29 to move toward the outer side of the nanocrystalline core 19, thereby keeping the conductive rod 29 in contact with the outer side of the nanocrystalline core 19.

[0038] Preferably, an exhaust one-way valve 25 is provided on the heat preservation cover 17 so that the air in the heat preservation cover 17 can be discharged to avoid accumulation in the heat preservation cover 17, while the outer wall air cannot flow into the heat preservation cover 17 to avoid hypothermia.

[0039] Preferably, an electromagnetic sensor 28 is provided on the outer wall of the second hard tube 24. When the nanocrystalline iron core 19 is installed on the second hard tube 24, the electromagnetic sensor 28 is located inside the nanocrystalline iron core 19.

[0040] During the test, the electromagnetic sensor 28 can detect the direction and strength of the magnetic field. When the nanocrystalline core 19 is damaged, the strength and direction of the magnetic field will change, and the damage can be detected.

[0041] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A nanocrystalline iron core stability test device, characterized by: It includes a base, a vibration base, a conical pad 2, a resistance detector and a controller. The upper surface of the base is provided with a dual-axis motor and a U-shaped frame. The output shaft of the dual-axis motor is connected to an eccentric gear through an adjustment mechanism. The adjustment mechanism can adjust the distance between the output shaft of the dual-axis motor and the center of the eccentric gear. The eccentric gear is meshed with an end gear. A sliding rod is provided on the upper surface of the end gear. A rebound mechanism is connected between the sliding rod and the U-shaped frame to keep the end gear and the eccentric gear meshed. A piston is provided on the sliding rod. A ring magnet is provided in the piston. A cylinder body is provided on the sliding sleeve of the piston. The cylinder body is connected to the top of the U-shaped frame, the sliding rod is movably arranged on the top of the cylinder body and the top of the U-shaped frame, a coil is provided in the side wall of the cylinder body, an intake check valve and an exhaust check valve 1 are provided on the side wall of the cylinder body, a PTC heating element is provided in the cylinder body at the intake check valve, the piston drives the annular magnet to move relative to the coil, so that the coil induces current and supplies power to the PTC heating element for heating, the exhaust check valve 1 is connected to a shunt pipe, the shunt pipe is connected to a hard pipe 1, the hard pipe 1 is arranged on the top of the U-shaped frame, and the upper end of the hard pipe 1 is slidably connected to the hard pipe 2; The two sides of the lower surface of the vibration seat are rotatably connected to the upper ends of the two sliding rods, and the hard tube second is penetrated by the vibration seat, and a nut, a conical pad, a noise sensor, an elastic mechanism and a conical pad are sequentially provided on the hard tube second from top to bottom, and the nut is threadably connected to the hard tube second, and the conical pad one is movably sleeved on the hard tube one, and the conical pad two is sleeved on the hard tube two, and the bottom of the conical pad two is connected to the upper surface of the vibration seat, and the elastic mechanism one is connected to the conductive rod, after the nanocrystalline iron core is sleeved on the upper end of the hard tube two, the lower end of the nanocrystalline iron core is against the conical pad two, and the conical pad one is driven to press the upper end of the nanocrystalline iron core by rotating the nut. A temperature sensor and an electric push rod one are provided on the upper surface of the vibration seat, and the telescopic end of the electric push rod one is connected to the conductive rod through the elastic mechanism two, and the conductive rods inside and outside the nanocrystalline iron core are respectively against its inner and outer side surfaces, and a detachable heat preservation cover is provided on the vibration seat; The controller and the resistance detector are both arranged on a U-shaped frame. The controller is electrically connected to the coil, the PTC heating element and the temperature sensor; the resistance detector is electrically connected to the conductive rod.

2. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: The adjustment mechanism includes a slide groove provided on the end surface of the eccentric gear, the slide groove passes through the center of the eccentric gear, and an electric push rod 2 and a slider 1 are provided in the slide groove. The telescopic end of the electric push rod 2 is connected to the slider 1, and the output shaft of the dual-axis motor is connected to the slider 1.

3. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: The rebound mechanism includes a support 1 arranged on the side wall of the U-shaped frame, a swivel is rotatably provided on the lower surface of the support 1, the slide rod is movably passed through the support 1, a spring 1 is abutted between the upper surface of the end gear and the lower surface of the swivel, and the spring is set on the slide rod.

4. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: There are multiple elastic mechanisms one, and the multiple elastic mechanisms one are respectively arranged on the outer wall of the second hard tube at intervals.

5. The nanocrystalline iron core stability test equipment according to claim 4, characterized in that: The elastic mechanism 1 includes a sleeve arranged on the outer wall of the hard tube 2, a slider 2 is arranged in the sleeve, a spring 2 is connected between one end face of the slider 2 and the end wall of the sleeve, the conductive rod is connected to the other end face of the slider 2, and the conductive rod is slidably penetrated on the end wall of the sleeve away from the spring 2.

6. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: The second elastic mechanism includes a sleeve arranged at a telescopic end of the electric push rod, a slider second is provided in the sleeve, a spring second is connected between one end face of the slider second and the end wall of the sleeve, the conductive rod is connected to the other end face of the slider second, and the conductive rod is slidably penetrated on the end wall of the sleeve away from the second spring.

7. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: The heat-insulating cover is provided with a second exhaust one-way valve.

8. The nanocrystalline iron core stability test equipment according to claim 1, characterized in that: An electromagnetic sensor is provided on the outer wall of the second hard tube. When the nanocrystalline iron core is installed on the second hard tube, the electromagnetic sensor is located inside the nanocrystalline iron core.

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