Three-axis electromagnetic damping device

Abstract

This utility model discloses a triaxial electromagnetic vibration damping device, including a base, a support platform on top of the base, a supporting column at the center of the bottom of the support platform, a vertical vibration damping component between the support column and the base, and horizontal vibration damping components between the support column and the base on the left and right sides of the support column. Each vibration damping component includes an extending cylinder connected to the support column and a magnetic shielding sleeve connected to the base. A supporting permanent magnet is provided at the top of the extending cylinder. A conductor coil is wound around the outer wall of the extending cylinder. Inside the magnetic shielding sleeve, a balancing permanent magnet and a magnetic core are arranged in layers from top to bottom. Each layer of balancing permanent magnets includes an inner permanent magnet and an annular outer permanent magnet. Each layer of magnetic cores includes an inner magnetic core and an annular outer magnetic core. An annular gap exists between the inner permanent magnet / inner magnetic core and the outer permanent magnet / outer magnetic core, and the extending cylinder extends into this annular gap. This utility model can effectively isolate the influence of external vibrations on precision instruments.

Description

Technical Field

[0001] This utility model belongs to the field of engineering equipment technology, specifically, it relates to a triaxial electromagnetic vibration damping device. Background Technology

[0002] Vibration not only affects equipment performance and lifespan but can also cause noise pollution and user discomfort. Traditional vibration reduction methods include using spring dampers and rubber damping pads, but these methods often fail to meet the requirements in some high-precision applications. For example, in the application of precision instruments such as optical microscopes, electron microscopes, and high-precision sensors, more precise and efficient vibration reduction measures are needed.

[0003] In recent years, some vibration reduction technologies based on electromagnetic principles have gradually developed. Electromagnetic vibration reduction has advantages such as fast response speed and adjustable vibration reduction effect. However, existing electromagnetic vibration reduction technologies still have some problems in structural design and practical application. For example, some electromagnetic vibration reduction devices have complex structures and high manufacturing and maintenance costs; others are insufficient in terms of stability and reliability, and cannot operate stably for a long time in complex working environments. Utility Model Content

[0004] To address the problem of interference caused by external vibrations during the operation of precision instruments, this invention proposes a triaxial electromagnetic vibration damping device. This device employs a unique electromagnetic interaction principle, generating a uniform magnetic field in the air gap and using appropriately wound coils to achieve platform levitation and vibration damping. It effectively isolates the influence of external vibrations on precision instruments, improving their measurement accuracy and stability.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] This utility model discloses a triaxial electromagnetic vibration damping device, comprising a base, a support platform above the base, a supporting column at the center of the bottom of the support platform, a vertical vibration damping component between the supporting column and the base, and horizontal vibration damping components between the supporting column and the base on the left and right sides of the supporting column. Each vibration damping component includes an extending cylinder connected to the supporting column and a magnetic shielding sleeve connected to the base. A supporting permanent magnet is provided at the top of the extending cylinder. A conductor coil is wound around the outer wall of the extending cylinder. Inside the magnetic shielding sleeve, a balancing permanent magnet and a magnetic core are arranged in layers from top to bottom. Each layer of the balancing permanent magnet includes an inner permanent magnet located at the center of the magnetic shielding sleeve and an annular outer permanent magnet located on the inner wall of the magnetic shielding sleeve. Each layer of the magnetic core includes an inner magnetic core located at the center of the magnetic shielding sleeve and an annular outer magnetic core located on the inner wall of the magnetic shielding sleeve. An annular gap exists between the inner permanent magnet / inner magnetic core and the outer permanent magnet / outer magnetic core, and the extending cylinder extends into the annular gap.

[0007] Furthermore, the conductor coil is provided with three segments, and the winding directions of the three conductor coil segments are alternated.

[0008] Furthermore, the N and S poles of the balancing permanent magnets in each layer are alternately arranged.

[0009] Beneficial effects

[0010] 1. This utility model adopts a unique electromagnetic interaction principle. By generating a uniform magnetic field between the inner and outer permanent magnets and by properly winding the coil, it realizes the platform's levitation and vibration reduction functions, effectively isolating the influence of external vibrations on precision instruments and improving the measurement accuracy and stability of precision instruments.

[0011] 2. The three-segment design of the coil winding in this utility model ensures that the coil can always generate a stable magnetic force in the magnetic field during vibration, maintain the force balance of the platform, and greatly improve the stability and reliability of the vibration reduction effect.

[0012] 3. This utility model utilizes the principle of electromagnetic induction to generate an induced current in the coil during vibration, which is then converted into heat energy and consumed, thereby further enhancing the vibration reduction capability, reducing energy reflection and transmission, and improving vibration reduction efficiency.

[0013] 4. The triaxial electromagnetic vibration damping device of this utility model is relatively simple, easy to manufacture and install, and has a low cost, which is conducive to its promotion and application and can meet the vibration damping needs of precision instruments in different fields. Attached Figure Description

[0014] Figure 1 This is an external view of a triaxial electromagnetic vibration damping device.

[0015] Figure 2This is a cross-sectional view of a triaxial electromagnetic vibration damping device;

[0016] Figure 3 Detailed cross-sectional view of the vibration damping assembly;

[0017] Figure 4 for Figure 3 Schematic diagram of section II;

[0018] Reference numerals in the attached diagram: 1. Foundation; 2. Supporting permanent magnet; 3. Base; 4. Magnetic core; 5. Balancing permanent magnet; 6. Coil; 7. Extending cylinder; 8. Supporting column; 9. Magnetic shielding sleeve. Detailed Implementation

[0019] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0020] Example 1:

[0021] Reference Figures 1-2 This embodiment of the triaxial electromagnetic vibration damping device aims to solve the problem of interference caused by external vibrations during the operation of precision instruments. The triaxial electromagnetic vibration damping device includes a base 3, a support platform 1 on top of the base, a supporting column 8 at the center of the bottom of the support platform, a vertical damping component between the support column and the base, and horizontal damping components between the support column and the base on the left and right sides. Each damping component includes an extending cylinder 7 connected to the support column and a magnetic shielding sleeve 9 connected to the base. A supporting permanent magnet 2 is located at the top of the extending cylinder 7. A conductor coil 6 is wound around the outer wall of the extending cylinder. Inside the magnetic shielding sleeve, balancing permanent magnets 5 and magnetic cores 4 are arranged in layers from top to bottom. Each layer of balancing permanent magnets 5 includes an inner permanent magnet located at the center of the magnetic shielding sleeve and an annular outer permanent magnet located on the inner wall of the magnetic shielding sleeve. Figure 3-4 As shown, this embodiment includes three layers of balancing permanent magnets 5, with the N and S poles of each layer of the balancing permanent magnets 5 alternating. The magnetic poles of the three layers of balancing permanent magnets are placed alternately. Figure 3-4 In the diagram, 5a has its N pole facing upwards; 5b has its S pole facing upwards; 5c has its S pole facing upwards; 5d has its N pole facing upwards; 5e has its N pole facing upwards; and 5f has its S pole facing upwards.

[0022] like Figure 3-4 As shown, the conductor coil in this embodiment is provided with three segments, and the winding directions of the three conductor coil segments are alternated, that is... Figure 3-4 In the coil, 6a is wound counterclockwise; 6b is wound clockwise; and 6c is wound counterclockwise. After the coil is energized, the direction of the current is related to the winding direction of the coil. The current interacts with the magnetic field at the core, generating a force that balances the base.

[0023] Each layer of the magnetic core includes an inner magnetic core located at the center of the magnetic shielding sleeve and an annular outer magnetic core located on the inner wall of the magnetic shielding sleeve. An annular gap exists between the inner permanent magnet / inner magnetic core and the outer permanent magnet / outer magnetic core, and the extending cylinder extends into this annular gap. The magnetic core itself is non-magnetic. The magnetic core is placed below the balancing permanent magnet to conduct and change the direction of the magnetic field of the balancing permanent magnet, causing the inner and outer balancing permanent magnets to generate a directional magnetic field loop, producing a uniform magnetic field between the inner and outer magnetic cores. At points 4a and 4b, the direction is from 4a to 4b; at points 4c and 4d, the direction is from 4d to 4c; and at points 4e and 4f, the direction is from 4e to 4f.

[0024] In this embodiment, the extended cylinder 8 of the support platform extends from the support platform to the upper part of the base, at a distance of half the height of a magnetic core from the base.

[0025] In this embodiment, the coil winding point is located on the extension cylinder 7. Three long grooves are provided on the extension cylinder of the support platform, and the center of each groove coincides with the center of each magnetic core, which is used to wind and fix the position of the coil.

[0026] The triaxial electromagnetic vibration damping device is characterized in that: when the base vibrates, the coil moves in the magnetic field to cut magnetic field lines, generating an induced current that is opposite to the original current. This induced current is converted into heat energy in the conductor and is consumed, thus playing the role of energy consumption and vibration damping.

[0027] The triaxial electromagnetic vibration damping device described in this embodiment works on the principle of electromagnetic interaction. When the device starts working, a direct current is applied to the winding of the coil 6. Since the magnetic field generated by the permanent magnet 5 is perpendicular to the current in the coil, a magnetic force is generated by electromagnetic interaction. In the vertical damping assembly, this magnetic force balances the gravity of the platform 1, thereby suspending the object on the platform 1. In the horizontal damping assembly, this magnetic force generates a horizontal damping force, reducing horizontal vibration.

[0028] When the base in contact with the ground is affected by external vibration, the coil will not vibrate out of the air gap because the winding range of the coil 6 is larger than the air gap range. This ensures that there is always a certain amount of current and magnetic force in the coil, so that the platform 1 and the object are not affected by ground vibration and maintain a suspended state.

[0029] Simultaneously, when the base 3 begins to vibrate, the coil 6, where it is wound, moves within the magnetic field, cutting magnetic field lines. According to the law of electromagnetic induction, an induced current, opposite to the original current, is generated in the coil. During the vibration process, this induced current is converted into heat energy within the conductor, thus consuming energy and reducing vibration, further stabilizing the platform.

[0030] It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. All components not explicitly stated in this embodiment can be implemented using existing technology.

Claims

1. A triaxial electromagnetic vibration damping device, characterized in that, The device includes a base, a platform on top of the base, a supporting column at the center of the bottom of the platform, a vertical vibration damping component between the supporting column and the base, and horizontal vibration damping components between the supporting column and the base on the left and right sides of the supporting column. Each vibration damping component includes an extending cylinder connected to the supporting column and a magnetic shielding sleeve connected to the base. A supporting permanent magnet is provided at the top of the extending cylinder. A conductor coil is wound around the outer wall of the extending cylinder. Inside the magnetic shielding sleeve, a balancing permanent magnet and a magnetic core are arranged in layers from top to bottom. Each layer of the balancing permanent magnet includes an inner permanent magnet located at the center of the magnetic shielding sleeve and an annular outer permanent magnet located on the inner wall of the magnetic shielding sleeve. Each layer of the magnetic core includes an inner magnetic core located at the center of the magnetic shielding sleeve and an annular outer magnetic core located on the inner wall of the magnetic shielding sleeve. There is an annular gap between the inner permanent magnet / inner magnetic core and the outer permanent magnet / outer magnetic core, and the extending cylinder extends into the annular gap.

2. The triaxial electromagnetic vibration damping device according to claim 1, characterized in that, The conductor coil is provided in three sections, and the winding direction of the three sections of conductor coil is alternate.

3. The triaxial electromagnetic vibration damping device according to claim 1, characterized in that, The N and S poles of the balancing permanent magnets in each layer are alternately arranged.

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