An electric suspension test device

Abstract

This application discloses an electric levitation testing device, relating to the field of electric levitation technology, including a first adjusting seat, a second adjusting seat, a permanent magnet disk, a first driving assembly, an induction disk, a second driving assembly, and a force measuring mechanism. The distance between the two adjusting seats is adjustable. The permanent magnet disk has mounting holes for installing permanent magnets with different parameters and is rotatably connected to the first adjusting seat. The first driving assembly is located on the first adjusting seat and connected to the permanent magnet disk, used to drive the permanent magnet disk to rotate relative to the first adjusting seat. The induction disk is rotatably connected to the second adjusting seat. The second driving assembly is located on the second adjusting seat and connected to the induction disk, used to drive the induction disk to rotate relative to the second adjusting seat. The force measuring mechanism is located between the induction disk and the second driving assembly, used to detect the electromagnetic force generated during the rotation of the induction disk and the permanent magnet disk. The above-described electric levitation testing device solves the problem of poor versatility in traditional electric levitation testing devices.

Description

Technical Field

[0001] This application relates to the field of electric levitation technology, and in particular to an electric levitation test device. Background Technology

[0002] Permanent magnet electric levitation technology refers to the technology that generates levitation force by inducing eddy currents through the mutual motion of a vehicle-mounted permanent magnet material and a non-ferromagnetic conductor induction track, which cuts magnetic lines of force.

[0003] In the research of permanent magnet electric levitation systems, to deeply explore the influence of static factors such as different permanent magnet parameters and permanent magnet array types, as well as dynamic factors such as levitation gap and operating speed on the system's levitation performance, it is urgently necessary to build a principle verification test device capable of covering all operating conditions from low speed to high speed. Verifying the mathematical model of theoretical research through this device, and refining the model to further analyze and verify the system's levitation characteristics, is of great significance for promoting the engineering application of permanent magnet electric levitation technology.

[0004] Currently, research on permanent magnet electric levitation technology in China is still in its early stages. Only a few research institutes have built simple, principle-based experimental devices suitable for low- and medium-speed ranges, and these devices vary in structure, such as cylindrical circumferential experimental devices and single-rotation small-diameter experimental platforms, lacking versatility. Furthermore, while the advantage of permanent magnet electric levitation technology lies in high-speed operation, most existing experimental devices only contain one moving body, which cannot meet the experimental requirements of the high-speed range. At the same time, existing experimental equipment generally suffers from temperature rise problems, seriously affecting the accuracy of experimental data. Utility Model Content

[0005] The purpose of this application is to provide an electric suspension testing device that solves the problem of poor versatility of traditional electric suspension testing devices.

[0006] To achieve the above objectives, this application provides an electric levitation testing device, comprising:

[0007] The distance between the first adjusting seat and the second adjusting seat is adjustable.

[0008] The permanent magnet disk is provided with mounting holes for installing permanent magnets with different parameters and is rotatably connected to the first adjustment seat;

[0009] A first drive assembly is located on a first adjustment seat and connected to a permanent disk, used to drive the permanent disk to rotate relative to the first adjustment seat;

[0010] The induction plate is rotatably connected to the second adjustment base;

[0011] The second drive assembly is located on the second adjustment base and connected to the induction disk, and is used to drive the induction disk to rotate relative to the second adjustment base.

[0012] The force measuring mechanism, located between the induction disk and the second drive assembly, is used to detect the electromagnetic force generated during the rotation of the induction disk and the permanent disk.

[0013] In some embodiments, the force measuring mechanism includes a first disc, a second disc, and a plurality of pressure sensors, which are arranged circumferentially between the first disc and the second disc to detect the axial electromagnetic force on the sensing disc.

[0014] In some embodiments, the electric levitation test apparatus further includes:

[0015] A planar thrust bearing, mounted on the drive shaft of the induction disk, is used to transmit the axial electromagnetic force on the induction disk;

[0016] Two abutting angular contact ball bearings are respectively located on the inner sides of the first and second disc bodies.

[0017] In some embodiments, both the first drive assembly and the second drive assembly include a drive motor, a coupling and a bearing housing, with the bearing housing housing housing containing a bearing body.

[0018] The electric suspension test device also includes a mounting base for mounting the permanent disk.

[0019] In some embodiments, the induction disk is provided with weight-reducing holes evenly distributed along the circumference.

[0020] In some embodiments, the electric suspension test device further includes a data acquisition and processing system, which is connected to the force measuring mechanism. The data acquisition and processing system is used to acquire electromagnetic force data detected by the force measuring mechanism in real time, and to store, analyze and display the electromagnetic force data.

[0021] In some embodiments, the electric levitation test apparatus further includes a rotational speed detection module, which includes:

[0022] Speed ​​measuring gear, mounted on the drive shaft of the permanent magnet disc;

[0023] The photoelectric encoder, located on the first adjustment seat, works in conjunction with the speed measuring gear to collect the rotational speed of the permanent magnet disk in real time.

[0024] In some embodiments, the bottom of both the first adjusting seat and the second adjusting seat is provided with a slide rail, and the electric suspension test device also includes an electric push rod, which pushes the first adjusting seat and the second adjusting seat to slide relative to each other along the slide rail to adjust the distance between the first adjusting seat and the second adjusting seat.

[0025] In some embodiments, the telescopic rod of the electric actuator is provided with an indicator scale for indicating the distance between the first adjustment seat and the second adjustment seat.

[0026] In some embodiments, both the first adjustment seat and the second adjustment seat are provided with a cooling device, which includes a cooling fan and / or a coolant circulation system. The cooling device is used to reduce the temperature of the permanent magnet disk and the induction disk during operation.

[0027] Compared to the aforementioned background technology, the electric levitation test device provided in this application includes a first adjusting seat, a second adjusting seat, a permanent magnet disk, a first driving assembly, an induction disk, a second driving assembly, and a force measuring mechanism. The distance between the first and second adjusting seats is adjustable. The permanent magnet disk has mounting holes for installing permanent magnets with different parameters and is rotatably connected to the first adjusting seat. The first driving assembly is located on the first adjusting seat and connected to the permanent magnet disk, driving the permanent magnet disk to rotate relative to the first adjusting seat. The induction disk is rotatably connected to the second adjusting seat. The second driving assembly is located on the second adjusting seat and connected to the induction disk, driving the induction disk to rotate relative to the second adjusting seat. The force measuring mechanism is located between the induction disk and the second driving assembly, detecting the electromagnetic force generated during the rotation of the induction disk and the permanent magnet disk.

[0028] This configuration, employing a rotating permanent magnet disk and an induction disk, allows the electric levitation test device to simulate speeds twice that of traditional test devices, enabling electromagnetic force testing at higher speeds. Furthermore, the permanent magnet disk has mounting holes for permanent magnets with varying parameters, allowing for the installation of permanent magnet arrays with different parameters, thus simulating electromagnetic force testing under different parameter permanent magnet arrays. Additionally, the adjustable distance between the first and second adjustment seats allows for adjustment of the distance (levitation gap) between the permanent magnet disk and the induction disk, simulating electromagnetic force testing under different levitation gaps. In this way, the electric levitation test device can determine and verify the electromagnetic force variation trend and law of the system under different permanent magnet parameters, different levitation gaps, and speeds across the entire speed range, solving the problem of poor versatility in traditional electric levitation test devices. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of the overall structure of the electric suspension test device in the embodiments of this application. Figure 1 .

[0031] Figure 2This is a schematic diagram of the overall structure of the electric suspension test device in the embodiments of this application. Figure 2 .

[0032] Figure 3 for Figure 1 The front view of the electric suspension test device shown.

[0033] Figure 4 for Figure 3 Enlarged view of the mid-plane thrust bearing, force measuring mechanism, and angular contact ball bearing.

[0034] Figure 5 for Figure 1 Side view of the electric suspension test device shown.

[0035] in:

[0036] 10-First Adjustment Seat;

[0037] 20 - Second Adjustment Seat;

[0038] 30 - Permanent disk, 31 - Mounting hole;

[0039] 40-First drive assembly, 41-First drive motor, 42-First coupling, 43-First bearing housing;

[0040] 50 - Induction plate, 51 - Weight reduction hole;

[0041] 60-Second drive assembly, 61-Second drive motor, 62-Second coupling, 63-Second bearing housing;

[0042] 70-Force measuring mechanism, 71-First disc, 72-Second disc, 73-Pressure sensor;

[0043] 80-Planar thrust bearing;

[0044] 90° angular contact ball bearing;

[0045] 100-Fixed base. Detailed Implementation

[0046] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0047] To enable those skilled in the art to better understand the present application, the present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0048] It should be noted that the directional terms such as "upper end," "lower end," "left side," and "right side" mentioned below are defined based on the accompanying drawings in the instruction manual.

[0049] Please refer to Figures 1 to 5 , Figure 1 This is a schematic diagram of the overall structure of the electric suspension test device in the embodiments of this application. Figure 1 . Figure 2 This is a schematic diagram of the overall structure of the electric suspension test device in the embodiments of this application. Figure 2 . Figure 3 for Figure 1 The front view of the electric suspension test device shown. Figure 4 for Figure 3 Enlarged view of the mid-plane thrust bearing, force measuring mechanism, and angular contact ball bearing. Figure 5 for Figure 1 Side view of the electric suspension test device shown.

[0050] The electric levitation test device provided in this application embodiment includes a first adjusting seat 10, a second adjusting seat 20, a permanent magnet disk 30, a first drive assembly 40, an induction disk 50, a second drive assembly 60, and a force measuring mechanism 70. For example... Figure 1 The left side shown is called the permanent disk side, and the right side is called the induction disk side. The two sides are arranged in a nearly symmetrical manner.

[0051] The distance between the first adjusting seat 10 and the second adjusting seat 20 is adjustable. For example, the bottom of the first adjusting seat 10 and the second adjusting seat 20 are provided with slide rails. The electric suspension test device also includes an electric push rod, which pushes the first adjusting seat 10 and the second adjusting seat 20 to slide relative to each other along the slide rails to adjust the distance between the first adjusting seat 10 and the second adjusting seat 20.

[0052] To facilitate precise control and allow test personnel to observe the distance between the first adjusting seat 10 and the second adjusting seat 20, the telescopic rod of the electric push rod is equipped with an indicator scale to indicate the distance between the first adjusting seat 10 and the second adjusting seat 20.

[0053] Of course, the distance between the first adjusting seat 10 and the second adjusting seat 20 can also be adjusted by adjusting the adjusting screw, depending on actual needs.

[0054] The permanent magnet disk 30 is provided with mounting holes 31 that can install permanent magnets with different parameters. The mounting holes 31 of the permanent magnet disk 30 are arranged in a ring matrix, and each mounting hole 31 is embedded with a detachable permanent magnet fixing module. The permanent magnet fixing module can be adapted to permanent magnets of different sizes.

[0055] Specifically, the permanent magnet disk 30 is made of aluminum and has a diameter of 1200mm. The outer side of the permanent magnet disk 30 has grooves and fixing bolt holes with different spacing, which can be used to install permanent magnet arrays with different size parameters. By replacing permanent magnet arrays with different parameters, the influence of permanent magnets with different size parameters on the electromagnetic force of the system can be simulated in the experiment.

[0056] The permanent disk 30 is rotatably connected to the first adjustment seat 10. The first drive assembly 40 is disposed on the first adjustment seat 10 and connected to the permanent disk 30. The first drive assembly 40 is used to drive the permanent disk 30 to rotate relative to the first adjustment seat 10.

[0057] The induction disk 50 is rotatably connected to the second adjustment base 20. The second drive assembly 60 is disposed on the second adjustment base 20 and connected to the induction disk 50. The second drive assembly 60 is used to drive the induction disk 50 to rotate relative to the second adjustment base 20.

[0058] Specifically, the induction disk 50 is made of a non-ferromagnetic benign conductor. The induction disk 50 and the track material of the permanent magnet electric levitation system are the same, generally using aluminum. The benign conductor rotates and cuts the magnetic lines of force released by the permanent magnet disk 30, which can induce eddy currents inside the induction disk 50. The interaction between the eddy currents and the permanent magnet material will generate electromagnetic force (also known as levitation force).

[0059] The force measuring mechanism 70 is located between the induction disk 50 and the second drive assembly 60. The force measuring mechanism 70 is used to detect the electromagnetic force generated during the relative rotation of the induction disk 50 and the permanent disk 30.

[0060] The electromagnetic force generation principle of this electric levitation test device is as follows: A permanent magnet array (i.e., permanent magnets) is fixed on the permanent magnet disk 30, which continuously releases magnetic field lines. Because the induction disk 50 is made of non-ferromagnetic material, the magnetic field lines will pass through the induction disk 50 when stationary. When the two move relative to each other, the induction disk 50 cuts the magnetic field, inducing a current in the induction disk 50. This current can generate an axial force in the moving, time-varying magnetic field, which is the electromagnetic levitation force required for the actual operation of the vehicle and the induction track.

[0061] With this configuration, the electric levitation test device uses a rotating permanent magnet disk 30 and an induction disk 50, which can simulate twice the simulation speed of a traditional test device, thus enabling electromagnetic force testing at a higher speed. Furthermore, since the permanent magnet disk 30 has mounting holes 31 for installing permanent magnets with different parameters, the electric levitation test device can mount permanent magnet arrays with different parameters on the permanent magnet disk 30, thereby simulating electromagnetic force testing under different permanent magnet array parameters. In addition, since the distance between the first adjusting seat 10 and the second adjusting seat 20 is adjustable, the distance (levitation gap) between the permanent magnet disk 30 and the induction disk 50 is also adjustable, thus enabling electromagnetic force testing under different levitation gaps.

[0062] In this way, the above-mentioned electric levitation test device can measure and verify the trend and law of electromagnetic force change of the system under different parameters of permanent magnets, different levitation gaps and speeds in the full speed range, thus solving the problem of poor versatility of traditional electric levitation test devices.

[0063] In some embodiments, the force measuring mechanism 70 includes a first disc 71, a second disc 72, and a plurality of pressure sensors 73. The plurality of pressure sensors 73 are arranged in a circumferential direction between the first disc 71 and the second disc 72 to detect the axial electromagnetic force on the sensing disc 50.

[0064] In this embodiment, pressure sensors 73 are arranged circumferentially in the two discs of the force measuring mechanism 70, with a total of 4 sensors arranged at the four corners, for axial suspension electromagnetic force measurement.

[0065] In some embodiments, the electric suspension test apparatus further includes a planar thrust bearing 80 and two back-to-back angular contact ball bearings 90.

[0066] The planar thrust bearing 80 is mounted on the drive shaft of the induction disk 50. The planar thrust bearing 80 is used to bear and transmit the axial electromagnetic force received by the induction disk 50 to the force measuring mechanism 70. Two abutting angular contact ball bearings 90 are respectively located on the inner side of the first disk 71 and the second disk 72 (the first disk 71 on the outer side of the left angular contact ball bearing 90 is equipped with the force measuring mechanism 70, and the second disk 72 on the outer side of the right angular contact ball bearing 90 is equipped with the force measuring mechanism 70). The angular contact ball bearings 90 can bear the pure axial suspension load here, have high rigidity and can provide good span support, and are suitable for high rotational speed test conditions.

[0067] In this way, the rotation of the two rotating disks generates electromagnetic thrust, which reaches the force measuring mechanism 70 through the planar thrust bearing 80. A pressure sensor 73 is installed around the perimeter between the first disk 71 and the second disk 72, and the electromagnetic force generated by the system can be measured through the pressure sensor 73.

[0068] The entire axial force transmission route is as follows: induction disk 50 → planar thrust bearing 80 → back-to-back mounted angular contact ball bearing 90 → force measuring mechanism 70 disk body → pressure sensor 73.

[0069] In some embodiments, both the first drive assembly 40 and the second drive assembly 60 include a drive motor, a coupling, and a bearing housing, with the bearing body installed inside the bearing housing.

[0070] Specifically, the first drive assembly 40 includes a first drive motor 41, a first coupling 42, and a first bearing housing 43. The first drive motor 41 serves as the driving power source for the rotation of the permanent magnet disk 30. The first coupling 42 is a flexible sleeve connector used to connect the motor output spindle and the drive shaft of the permanent magnet disk 30. The inner outer ring of the first bearing housing 43 is fitted with a bearing for supporting and transmitting motion of the drive shaft of the permanent magnet disk 30 on the worktable surface of the first adjusting seat 10. Furthermore, the electric suspension test device also includes a fixed seat 100, which has bolt holes and bosses around its perimeter for mounting the permanent magnet disk 30.

[0071] Similarly, the second drive assembly 60 includes a second drive motor 61, a second coupling 62, and a second bearing housing 63. The second drive motor 61 serves as the driving power source for the rotation of the induction disk 50. The second coupling 62 is a flexible sleeve connector used to connect the motor output spindle and the drive shaft of the induction disk 50. The inner outer ring of the second bearing housing 63 is fitted with a bearing for supporting the drive shaft of the induction disk 50 on the worktable surface of the second adjusting seat 20 and for motion transmission.

[0072] To facilitate weight reduction of the induction disk 50, the induction disk 50 is provided with weight-reducing holes 51 evenly distributed along the circumference. In addition to reducing the weight of the induction disk 50, the weight-reducing holes 51 also help dissipate heat from the induction disk 50.

[0073] In some embodiments, the electric suspension test device further includes a data acquisition and processing system, which is connected to the force measuring mechanism 70. The data acquisition and processing system is used to acquire electromagnetic force data detected by the force measuring mechanism 70 in real time, and to store, analyze and display the electromagnetic force data.

[0074] In some embodiments, the electric suspension test device further includes a rotation speed detection module, which includes a speed measuring gear and a photoelectric encoder.

[0075] The speed measuring gear is mounted on the drive shaft of the permanent magnet disk 30; the photoelectric encoder is located on the first adjustment seat 10. The photoelectric encoder cooperates with the speed measuring gear and is used to collect the rotational speed of the permanent magnet disk 30 in real time.

[0076] In this embodiment, the tooth groove structure of the speed measuring gear disk periodically cuts the optical path of the photoelectric encoder to generate pulse signals. By counting the number of pulses per unit time (e.g., if the gear disk has 60 teeth, then 60 pulses are generated per revolution), the rotational speed of the permanent magnet disk 30 can be accurately calculated.

[0077] In some embodiments, both the first adjustment seat 10 and the second adjustment seat 20 are provided with a cooling device, which includes a cooling fan and / or a coolant circulation system. The cooling device is used to reduce the temperature of the permanent magnet disk 30 and the induction disk 50 during operation.

[0078] It should be noted that the permanent magnets (such as neodymium iron boron or samarium cobalt) in the permanent magnet disk 30 are prone to irreversible demagnetization at high temperatures. For example, the magnetic flux density of a neodymium iron boron magnet may decrease by more than 15% when the operating temperature exceeds 80°C, resulting in a decrease in levitation force. The cooling device can control the temperature within a safe range (generally below 60°C) to maintain magnetic field stability. At the same time, the induction disk 50 typically uses copper or aluminum coils, and high temperatures will increase resistivity, increase eddy current losses, and reduce energy conversion efficiency. The liquid cooling system reduces resistive heating effects by directly cooling the coil surface, ensuring electromagnetic induction efficiency.

[0079] The cooling unit is integrated with the adjustment base, saving space. For example, the cooling fan is embedded in the adjustment base, and the airflow directly covers the spindle of the permanent disk 30.

[0080] The specific operation and testing procedure for the electric suspension test device using the above configuration is as follows:

[0081] Suppose we need to test a permanent magnet array with dimensions of 200*100mm (length x width), and a suspension gap of 20mm at a vehicle speed of 200km / h. How much electromagnetic levitation force can it generate?

[0082] First, a 200*100mm permanent magnet array is fastened to the permanent magnet disk 30 using array tooling bolts (the permanent magnet disk 30 has bolt holes of different sizes, allowing for the installation of one set or four sets circumferentially), ensuring the permanent magnet array rotates synchronously with the permanent magnet disk 30. Then, the adjusting seats corresponding to the two rotating disks of the test device are adjusted, with an effective distance of 20mm, to simulate a 20mm suspension gap. Next, based on the required operating speed (200km / h for example), assuming the two rotating motors rotate at the same speed, i.e., equally sharing the 200km / h, the operating speed allocated to each motor is 100km / h.

[0083] After the above installation and adjustment are completed, fix the left and right side components to ensure that there is no axial displacement (i.e., the gap is fixed at 20mm during equipment startup). At the same time, calibrate and zero the four pressure sensors 73 of the force measuring mechanism 70. Then turn on the power, start the motors on both sides and slowly rotate to the specified speed. After the speed stabilizes, the axial force required for the test can be obtained by reading the signals from the four pressure sensors 73 (i.e., the electromagnetic levitation force generated by the permanent magnet array of this size at a levitation gap of 20mm and a speed of 200km / h).

[0084] In the aforementioned electric levitation test device, the use of two rotating disks in opposite directions can simulate twice the simulated speed of traditional test devices, thus simulating tests in a higher speed range. By adjusting the motor speed, the electromagnetic force under different train speeds can be simulated. At the same time, on one side of the permanent magnet disk, permanent magnet arrays with different fixed size parameters can be replaced to simulate the influence of permanent magnets with different parameters on the electromagnetic force of the system. In addition, the electromagnetic force under different levitation gaps can be simulated by adjusting the gap between the two rotating disks.

[0085] The aforementioned electric suspension test device adopts an approximately symmetrical assembly structure. It uses a direct drive and direct connection structure of motor → coupling → drive bearing → rotating disk to ensure transmission efficiency. At the same time, the left and right parts do not interfere with each other, and the distance can be adjusted and fixed at any time.

[0086] In summary, the two horizontal rotating disks in this device serve as the mounting points for the vehicle-mounted permanent magnet and the same material used to simulate the induction track. By reversing the left and right motors, high-speed travel can be simulated. The high-speed cutting of magnetic lines of force by the rotating disk generates levitation force, allowing for the experimental measurement of the levitation force produced by permanent magnets of different dimensions. This horizontal experimental device, by simulating the relative motion between an actual permanent magnet and a track, can verify the principle of this levitation system, further refining the theoretical mathematical model. The horizontal structure is relatively simple and easy to assemble and manufacture.

[0087] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0088] The electric levitation test device provided in this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the embodiments above are only for the purpose of helping to understand the solution and core ideas of this application. It should be noted that those skilled in the art can make several improvements and modifications to this application without departing from the principles of this application, and these improvements and modifications also fall within the protection scope of this application.

Claims

1. An electrodynamic levitation test device, characterized by include: A first adjusting seat and a second adjusting seat, wherein the distance between the first adjusting seat and the second adjusting seat is adjustable; The permanent magnet disk is provided with mounting holes for installing permanent magnets with different parameters and is rotatably connected to the first adjustment seat; A first drive assembly is disposed on the first adjustment seat and connected to the permanent disk, used to drive the permanent disk to rotate relative to the first adjustment seat; The induction plate is rotatably connected to the second adjustment base; The second drive assembly is located on the second adjustment seat and connected to the induction disk, and is used to drive the induction disk to rotate relative to the second adjustment seat; A force measuring mechanism is disposed between the induction disk and the second drive component, and is used to detect the electromagnetic force generated during the rotation of the induction disk and the permanent magnet disk.

2. The electrodynamic levitation test device of claim 1, wherein The force measuring mechanism includes a first disc, a second disc, and a plurality of pressure sensors. The plurality of pressure sensors are arranged circumferentially between the first disc and the second disc to detect the axial electromagnetic force on the sensing disc.

3. The electrodynamic levitation test device of claim 2, wherein The electric levitation test device also includes: A planar thrust bearing is mounted on the drive shaft of the induction disk and is used to transmit the axial electromagnetic force on the induction disk. Two abutting angular contact ball bearings are respectively located on the inner sides of the first disc and the second disc.

4. The electrodynamic levitation test device of claim 1, wherein Both the first drive assembly and the second drive assembly include a drive motor, a coupling, and a bearing housing, wherein a bearing body is installed inside the bearing housing; The electric suspension test device also includes a fixed base for mounting the permanent disk.

5. The electric levitation test device as described in claim 1, characterized in that, The induction disk is provided with weight-reducing holes evenly distributed along the circumference.

6. The electric suspension test device as described in any one of claims 1-5, characterized in that, The electric suspension test device also includes a data acquisition and processing system, which is connected to the force measuring mechanism. The data acquisition and processing system is used to acquire electromagnetic force data detected by the force measuring mechanism in real time, and to store, analyze and display the electromagnetic force data.

7. The electric suspension test device as described in any one of claims 1-5, characterized in that, The electric levitation test device further includes a rotation speed detection module, which includes: A speed measuring gear is mounted on the drive shaft of the permanent magnet disk; An optical encoder, located on the first adjustment base, cooperates with the speed measuring gear disc to collect the rotational speed of the permanent magnet disc in real time.

8. The electric suspension test device as described in any one of claims 1-5, characterized in that, The bottom of both the first and second adjustment seats is provided with slide rails. The electric suspension test device also includes an electric push rod, which pushes the first and second adjustment seats to slide relative to each other along the slide rails to adjust the distance between the first and second adjustment seats.

9. The electric levitation test device as described in claim 8, characterized in that, The telescopic rod of the electric push rod is provided with an indicator scale to indicate the distance between the first adjustment seat and the second adjustment seat.

10. The electric suspension test device according to any one of claims 1-5, characterized in that, Both the first adjustment seat and the second adjustment seat are equipped with a cooling device, which includes a cooling fan and / or a coolant circulation system. The cooling device is used to reduce the temperature of the permanent magnet disk and the induction disk during operation.

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