Halbach electromagnetic quasi-zero stiffness vibration isolation platform

Abstract

The present application relates to a kind of Halbach electromagnetic quasi-zero stiffness vibration isolation platform, including storage platform, bottom plate and be arranged between the positive stiffness component, negative stiffness component and active electromagnetic component.Positive stiffness component includes telescopic guide rod, spring and adjusting washer arranged on the bottom plate, one end of spring is connected with storage platform, the other end is connected with adjusting washer;Negative stiffness component includes fixed housing, fixed magnet array and moving magnet array;Active electromagnetic component includes metal coil.Fixed magnet array is vertically arranged by a plurality of first fixed magnet and second fixed magnet according to Halbach array, moving magnet array is vertically arranged by a plurality of moving magnets, and the sum of vertical positive stiffness of spring is equal to the maximum negative stiffness of moving magnet array.Compared with prior art, the present application effectively improves the vibration isolation performance of vibration isolation platform, and can be widely applied to the occasion with higher vibration isolation requirement.

Description

Technical Field

[0001] This invention relates to the field of structural vibration isolation technology, and in particular to a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform. Background Technology

[0002] With the widespread application of precision sensing devices in intelligent robots, industrial automation, and high-precision measurement, higher demands are being placed on their vibration isolation capabilities. Traditional mechanical quasi-zero stiffness vibration isolation devices typically rely on complex spring combinations, hinges, or guide rail structures. While these systems can provide some low-frequency vibration isolation performance, their large size, frictional losses, and backlash make them unsuitable for the high stability and compact structure requirements of modern intelligent devices. Furthermore, the adjustment range of mechanical negative stiffness is limited, making it difficult to adapt to various load conditions under complex operating circumstances.

[0003] In contrast, quasi-zero stiffness vibration isolation devices based on electromagnetic force have gradually gained attention due to their advantages such as frictionlessness and high adjustability. However, existing electromagnetic negative stiffness systems still suffer from problems such as limited adjustment range and instability caused by nonlinear characteristics, which urgently need improvement. How to achieve a wider range of negative stiffness adjustment and more stable vibration isolation performance through optimized design, and combine it with active control technology to improve the dynamic adaptability of the system, has become an important research direction in the current technical field. Summary of the Invention

[0004] The purpose of this invention is to provide a Halebec electromagnetic quasi-zero stiffness vibration isolation platform to improve the vibration isolation performance and dynamic adaptability of the vibration isolation platform.

[0005] The objective of this invention can be achieved through the following technical solutions:

[0006] This invention provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, comprising a platform, a base plate, and a positive stiffness component, a negative stiffness component, and an active electromagnetic component disposed between the two.

[0007] The positive stiffness component includes a telescopic guide rod connecting the storage platform and the base plate, a spring surrounding the telescopic guide rod, and an adjusting shim on the base plate; one end of the spring is connected to the bottom of the storage platform, and the other end is connected to the adjusting shim.

[0008] The negative stiffness component includes a fixed housing on the base plate, a fixed magnet array inside the fixed housing, and a movable magnet array at the bottom of the platform that can extend into the fixed housing.

[0009] The active electromagnetic component includes a metal coil disposed within a fixed housing; both the fixed magnet array and the moving magnet array are provided in two sets and are symmetrically distributed about the metal coil;

[0010] The fixed magnet array consists of several first fixed magnets and second fixed magnets arranged vertically in a Hellbeck array; the moving magnet array consists of several moving magnets arranged vertically, and the sum of the vertical positive stiffness of the springs is equal to the maximum negative stiffness of the moving magnet array.

[0011] Furthermore, in each group of fixed magnet arrays, the number of the first fixed magnets is n, the number of the second fixed magnets is n-1, and n≥4; in each group of moving magnet arrays, the number of moving magnets is n-2; and in the active electromagnetic component, the total number of metal coils is n-3.

[0012] Furthermore, when the number of metal coils is greater than 1, the current direction of adjacent metal coils after being energized is opposite.

[0013] Furthermore, the fixed outer shell has a regular quadrilateral structure, and four sets of positive stiffness components are provided and symmetrically distributed at the four corners of the fixed outer shell.

[0014] Furthermore, the placement platform includes a platform top plate for supporting the vibration-isolated object and a mounting frame located at the bottom of the platform top plate, wherein the mounting frame has a plurality of moving magnet fixing slots vertically along its length.

[0015] Furthermore, the base plate is provided with a coil fixing groove for loading a metal coil, and the coil fixing groove is disposed between the mounting brackets.

[0016] Furthermore, the magnetization direction of the moving magnet is opposite to that of the adjacent first fixed magnet, and the magnetization directions of adjacent moving magnets are opposite, while the magnetization directions of moving magnets at the same height position are the same.

[0017] Furthermore, the horizontal central axis of the initial position of the moving magnet array coincides with the horizontal central axis of the fixed magnet array.

[0018] Furthermore, the adjusting shim is composed of two shims joined together, and both shims have semi-circular holes with a diameter that matches the diameter of the telescopic guide rod.

[0019] Furthermore, at least one adjusting shim is provided, and several adjusting shims can be placed between the top adjusting shim and the bottom plate.

[0020] Furthermore, the metal coil is made of enameled metal wire, and the metal material includes any one of copper, aluminum, nickel, gold, and platinum.

[0021] The Hellbeck array described in this invention is a specifically arranged magnet array that enhances magnetic field strength in one region while suppressing it in another. Its basic principle is to arrange the magnets in a specific orientation, causing the magnetic field to be amplified on one side of the array and almost disappear on the other. This invention uses a Hellbeck array because it can significantly improve the utilization efficiency of the magnetic field and reduce unnecessary energy loss. Through this directional enhancement of the magnetic field, stronger magnetic force and higher efficiency can be provided without increasing the number of magnets, making it particularly suitable for scenarios requiring high-performance magnetic fields.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] (1) The present invention achieves quasi-zero stiffness characteristics of the platform by configuring positive stiffness components and negative stiffness components, which can effectively isolate external vibrations. In addition, by combining the magnetic field enhancement characteristics of the Hellbeck array and the dynamic adjustment capability of the electromagnetic coil, the platform can significantly improve the negative stiffness performance, while achieving efficient vibration isolation in multiple directions and meeting the needs of intelligent sensing devices for stability and low-frequency vibration isolation.

[0024] (2) This invention combines the synergistic effect of a specific negative stiffness Helbeck magnet array, a positive stiffness component and an active electromagnetic component, which effectively improves the vibration isolation performance of the platform and can be widely used in occasions with high requirements for vibration isolation.

[0025] (3) The present invention utilizes the Heilbeck electromagnetic array to provide negative stiffness, which can adapt to vibrations of different frequencies, and is especially suitable for applications of high-efficiency vibration isolation.

[0026] (4) Through the design of active electromagnetic components, the present invention can adjust the platform response in real time according to the vibration intensity and frequency, thereby improving the vibration isolation effect.

[0027] (5) The present invention has a simple and reliable structure, and achieves relatively flexible vibration isolation performance control through electromagnetic adjustment, and can be widely used in various high-requirement vibration isolation applications. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the external structure of the Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to Embodiment 1 of the present invention.

[0029] Figure 2 This is a schematic diagram of the internal structure of the Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to Embodiment 1 of the present invention.

[0030] Figure 3 This is a schematic diagram of the structural layout of the Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to Embodiment 1 of the present invention.

[0031] Figure 4This is a schematic diagram of the structure of the storage platform in Embodiment 2 of the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the metal coil and the base plate in Embodiment 2 of the present invention.

[0033] Figure 6 This is a schematic diagram of the shape of the adjusting shim in Embodiment 3 of the present invention.

[0034] Figure 7 This is a schematic diagram of the structural position after loading the object and adjusting the number of adjusting shims in Embodiment 3 of the present invention.

[0035] Figure 8 This is a schematic diagram of the internal structure of the Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform of Embodiment 4 of the present invention (n=4).

[0036] Figure 9 This is a schematic diagram of the external structure location of the Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform of Embodiment 5 of the present invention.

[0037] Figure 10 This is a dynamic stiffness diagram of a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform in Embodiment 5 of the present invention.

[0038] Figure 11 This is a diagram showing the vertical force and displacement of a vibration-isolated weight in Embodiment 5 of the present invention.

[0039] Explanation of markings in the diagram:

[0040] 1-Storage platform, 11-Platform top plate, 12-Mounting bracket, 13-Motion magnet fixing slot;

[0041] 2-Base plate;

[0042] 3-Telescopic guide rod;

[0043] 4-Spring;

[0044] 5-Adjusting shims;

[0045] 6-Fixed outer casing;

[0046] 7-Fixed magnet array, 71-First fixed magnet, 72-Second fixed magnet;

[0047] 8-Moving magnet array, 81-Moving magnet;

[0048] 9-Metal coil, 91-Coil fixing slot, 92-First coil, 93-Second coil. Detailed Implementation

[0049] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, providing detailed implementation methods and specific operating procedures. However, the scope of protection of the present invention is not limited to the following embodiments. Component models, material names, connection structures, and other features not explicitly stated in this technical solution are considered common technical features disclosed in the prior art.

[0050] In this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; furthermore, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, they can be fixed connections, detachable connections, or integral connections; they can be mechanical connections or electrical connections; they can be direct connections or indirect connections through an intermediate medium; they can be internal connections between two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0052] Example 1:

[0053] This embodiment provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, such as... Figure 1-3 As shown, it includes a platform 1, a base plate 2, and a positive stiffness component, a negative stiffness component, and an active electromagnetic component disposed between the two.

[0054] The positive stiffness component includes a telescopic guide rod 3 connecting the storage platform 1 and the base plate 2, a spring 4 surrounding the telescopic guide rod 3, and an adjusting shim 5 disposed on the base plate 2. One end of the spring 4 is connected to the bottom of the storage platform 1, and the other end is connected to the adjusting shim 5.

[0055] The negative stiffness component includes a fixed housing 6 mounted on the base plate 2, a fixed magnet array 7 disposed within the fixed housing 6, and a movable magnet array 8 disposed at the bottom of the platform 1 and extending into the fixed housing 6. The active electromagnetic component includes a metal coil 9 disposed within the fixed housing 6. The electromagnetic field is adjusted by controlling the direction and magnitude of the current within the metal coil 9, thereby regulating the vibration response of the platform in real time. Both the fixed magnet array 7 and the movable magnet array 8 have two sets and are symmetrically distributed about the metal coil 9.

[0056] In this embodiment, the fixed magnet array 7 is composed of several first fixed magnets 71 and second fixed magnets 72 arranged vertically in a Heilbeck array. The moving magnet array 8 is composed of several moving magnets 81 arranged vertically, and the sum of the vertical positive stiffness of the springs 4 is equal to the maximum negative stiffness of the moving magnet array 8, so as to achieve the quasi-zero stiffness characteristic of the platform.

[0057] This embodiment achieves near-zero stiffness characteristics of the platform through the configuration of positive and negative stiffness components, effectively isolating external vibrations. Furthermore, by combining the magnetic field enhancement characteristics of the Hellbeck array with the dynamic adjustment capability of the electromagnetic coils, the platform significantly improves negative stiffness performance, while achieving efficient vibration isolation in multiple directions and meeting the stability and low-frequency vibration isolation requirements of intelligent sensing devices.

[0058] Example 2:

[0059] This embodiment provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, including a platform 1, a base plate 2, and a positive stiffness component, a negative stiffness component, and an active electromagnetic component disposed between the two.

[0060] The difference from Embodiment 1 is that the fixed outer shell 6 in this embodiment has a regular quadrilateral structure, and four sets of positive stiffness components are provided and symmetrically distributed at the four corners of the fixed outer shell 6.

[0061] like Figure 4-5 As shown, the platform 1 in this embodiment includes a platform top plate 11 for supporting the object to be isolated from vibration and a mounting frame 12 located at the bottom of the platform top plate 11. The mounting frame 12 has a plurality of vertically arranged moving magnet fixing slots 13 for placing moving magnets 81. The bottom plate 2 has coil fixing slots 91 for loading metal coils 9, and the coil fixing slots 91 are arranged between the mounting frames 12.

[0062] Example 3:

[0063] This embodiment provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, including a platform 1, a base plate 2, and a positive stiffness component, a negative stiffness component, and an active electromagnetic component disposed between the two.

[0064] The difference from Embodiment 1 is that the magnetization direction of the moving magnet 81 in this embodiment is opposite to that of the adjacent first fixed magnet 71, and the magnetization directions of adjacent moving magnets 81 are opposite. The magnetization directions of moving magnets 81 at the same height position are the same, so that the electromagnetic force applied to the moving magnet 81 after the metal coil 9 is energized can effectively control its movement.

[0065] In this embodiment, the bottom of the telescopic guide rod 3 is fixed to the base plate 2. It includes a fixed part and a telescopic part that is telescopically provided on the fixed rod. The top end of the telescopic part is connected to the bottom of the storage platform 1. Figure 6 As shown, the adjusting shim 5 is composed of two shims joined together. Both shims have semi-circular holes with a diameter matching that of the telescopic guide rod 3, allowing them to be fitted onto the telescopic guide rod 3. At least one adjusting shim 5 is provided. Several adjusting shims 5 can be placed between the top adjusting shim 5 and the base plate 2 to adjust the height of the bottom of the spring 4 (see reference). Figure 9 ).

[0066] In this embodiment, as Figure 7 As shown, the initial position of the storage platform 1 is determined by the horizontal center axis of the initial position of the moving magnet array 8, which coincides with the horizontal center axis of the fixed magnet array 7. When the storage platform 1 is loaded with items and its position decreases, it can be adjusted back to the initial position of the moving magnet array 8 by increasing the number of adjusting shims 5.

[0067] Example 4:

[0068] This embodiment provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, including a platform 1, a base plate 2, and positive stiffness components, negative stiffness components, and active electromagnetic components disposed between the two. The number of negative stiffness components and active electromagnetic components can be increased according to actual vibration isolation requirements.

[0069] The difference from Embodiment 1 is that, in each group of fixed magnet arrays 7, the number of first fixed magnets 71 is n, the number of second fixed magnets 72 is n-1, and n≥4; in each group of moving magnet arrays 8, the number of moving magnets 81 is n-2; in the active electromagnetic component, the total number of metal coils 9 is n-3; when the number of metal coils 9 is >1, the current direction of adjacent metal coils 9 after being energized is opposite. The number of magnets and the number of metal coils 9 in each magnet array increase according to the above rules.

[0070] When n=4, such as Figure 8As shown, the number of first fixed magnets 71 and second fixed magnets 72 on one side are 4 and 3 respectively, the total number of magnets in the single-sided fixed magnet array is 7, the number of single-sided moving magnet arrays is 2, and the number of metal coils 9 is 1. When n=5, the number of first fixed magnets 71 and second fixed magnets 72 on one side are 5 and 4 respectively, the total number of magnets in the single-sided fixed magnet array is 9, the number of single-sided moving magnet arrays is 3, and the number of metal coils 9 is 2. When n=6, the number of first fixed magnets 71 and second fixed magnets 72 on one side are 6 and 5 respectively, the total number of magnets in the single-sided fixed magnet array is 11, the number of single-sided moving magnet arrays is 4, and the number of metal coils 9 is 3.

[0071] When the number of metal coils 9 is greater than 1, the current direction of adjacent metal coils 9 after being energized is opposite. The metal coils 9 are made of enameled metal wire, and the metal material includes any one of copper, aluminum, nickel, gold, and platinum.

[0072] Example 5:

[0073] This embodiment provides a Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, including a placement platform 1, a positive stiffness component, a negative stiffness component, and an active electromagnetic component.

[0074] The structure of storage platform 1 is as follows Figure 4 As shown, it includes a platform top plate 11 and a mounting bracket 12. The mounting bracket 12 is provided with a slot for mounting a moving magnet 81, used to connect the positive stiffness component and the negative stiffness component to achieve the quasi-zero stiffness characteristic of the platform. Figure 4 As shown, the positive stiffness component includes a telescopic guide rod 3, a spring 4, and an adjusting shim 5, which are used to provide positive stiffness and adjust the height by adjusting the shim 5; the negative stiffness component includes a fixed housing 6, a first fixed magnet 71, a second fixed magnet 72, and a moving magnet 81, which are used to provide negative stiffness, and the moving magnet 81 can adjust the response of the platform under the action of the magnetic field; the active electromagnetic component includes a metal coil 9 and a coil fixing slot 91, which adjust the electromagnetic field by controlling the direction and magnitude of the current, thereby adjusting the vibration response of the platform in real time. Figure 5 The relative positions of the storage platform 1 and the coil fixing slot 91 in this embodiment are shown. The active electromagnetic component provides a changing current to apply electromagnetic force to the moving magnet 81 fixed in the slot of the storage platform 1 to achieve active control.

[0075] The distance d between the bottom of the moving magnet array 8 and the bottom of the fixed magnet array 7 is the maximum distance that the moving magnet array 8 can freely move downwards (e.g., ...). Figure 2(As shown). Similarly, considering the symmetrical arrangement, the distance between the top of the moving magnet array 8 and the top of the fixed magnet array 7 is also d. Furthermore, the distance between the top of the fixed magnet array 7 and the platform 1 is also d, to ensure that the platform 1 does not interfere with the fixed magnet array 7 when moving freely downwards. Under this distance constraint, the positional relationship between the platform 1 and the fixed housing 6 is as follows: Figure 9 As shown.

[0076] In this embodiment, the first fixed magnet 71 and the second fixed magnet 72 are arranged in a Hellbeck array, with a total of 9 magnets on one side. The magnetization directions from bottom to top are "right, down, left, up, right, down, left, up, right". The magnetization directions between adjacent moving magnets 81 are opposite, with a total of 3 moving magnets 81 on one side, and the magnetization directions from bottom to top are "right, left, right". The dimensions of the first fixed magnet 71 are 20×20×60mm, the dimensions of the second fixed magnet 72 are 20×10×60mm, and the dimensions of the moving magnets 81 are 20×30×60mm. All three types of magnets are neodymium iron boron magnets (NdFe35). The horizontal central axis of the initial position of the moving magnet array 81 coincides with the horizontal central axis of the array of the first fixed magnets 71 and the second fixed magnet 72.

[0077] An active electromagnetic component is disposed between the two moving magnets 81 on both sides. In this embodiment, the active electromagnetic component includes two metal coils 9 with opposite current directions, named the first coil 92 and the second coil 93, respectively. Both the first coil 92 and the second coil 93 are fixed to the platform base plate 2 through coil fixing slots 91. In this embodiment, the metal coils 9 are made of enameled metal wire, such as copper or aluminum.

[0078] In this embodiment, there are four springs 4, with a telescopic guide rod 3 in the middle to limit the deformation of the springs 4 to the vertical direction only. Adjusting shims 5 with semi-circular holes are placed at the bottom of the springs 4, and are fitted onto the telescopic guide rod 3 via two shims on the left and right sides. The sum of the vertical positive stiffness of the springs 4 is equal to the maximum negative stiffness of the moving magnet 81. Therefore, the minimum vertical stiffness of this Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform is zero, that is, the stiffness is 0 in the initial position.

[0079] Figure 10 The structural stiffness diagram of this embodiment is shown, with the horizontal axis representing the vertical position of the platform 1 or the moving magnet 81. In the initial position, the static stiffness of the structure is the sum of the vertical positive stiffness of the spring 4, and the dynamic stiffness is zero, achieving the design requirement of quasi-zero stiffness and possessing the characteristics of "high static stiffness and low dynamic stiffness".

[0080] Figure 11This is a vertical force-displacement diagram of a vibration-isolated object in this embodiment. The weight of the vibration-isolated object is 1000N, and the horizontal axis represents the vertical position of the platform 1 or the moving magnet 81. By adjusting the number of adjusting shims 5, the array of moving magnets 81 remains in its initial position after the platform 1 supports the vibration-isolated object. Within the movement range of -5mm to 5mm, the force-displacement curve is relatively flat, which is the low dynamic stiffness working range of this embodiment. This embodiment can also be designed with different magnet and spring parameters to meet the working requirements of different vibration-isolated objects.

[0081] In this embodiment, the active electromagnetic component is used to adjust the magnetic field strength in real time, applying a changing magnetic force to the moving magnet 81, and determining the input current ampere according to a calculation algorithm. When the moving magnet 81 is excited by vibration and moves upward, the first coil 92 is supplied with a current to the right, and the second coil 93 is supplied with a current to the left. They are equivalent to magnets magnetized to the right and left, respectively, applying a downward magnetic force to the moving magnet 81, accelerating its return to the initial position. The specific current direction is as follows: Figure 2 As shown. Similarly, when the moving magnet 81 is excited by vibration and moves downward, the currents in the first coil 92 and the second coil 93 are reversed, that is, the first coil 92 is supplied with a current to the left and the second coil 93 is supplied with a current to the right. They are equivalent to magnets magnetized to the right and left respectively, applying an upward magnetic force to the moving magnet 81 and accelerating its return to the initial position.

[0082] In this embodiment, the formula for calculating the magnetic force between the metal coil 9 and the moving magnet array 8 is as follows. Based on this formula, the required current ampere can be calculated:

[0083]

[0084] Among them, B r μ is the remanent magnetic field strength. r n is the relative permeability, μ0 is the free permeability, and n is the relative permeability. I Let r be the current direction vector, and r be the relative position vector between the current element and the equivalent magnetic charge element.

[0085] This invention achieves near-zero stiffness characteristics of the platform through the configuration of positive and negative stiffness components, effectively isolating external vibrations. Furthermore, by combining the magnetic field enhancement characteristics of the Hellbeck array with the dynamic adjustment capability of the electromagnetic coils, the platform significantly improves negative stiffness performance, while achieving efficient vibration isolation in multiple directions and meeting the stability and low-frequency vibration isolation requirements of intelligent sensing devices.

[0086] The above description of the embodiments is provided to enable those skilled in the art to understand and use the invention. It will be apparent to those skilled in the art that various modifications can be made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present invention is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the invention should be within the protection scope of the present invention.

Claims

1. A Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform, characterized in that, It includes a storage platform (1), a base plate (2), and a positive stiffness component, a negative stiffness component, and an active electromagnetic component located between the two; The positive stiffness component includes a telescopic guide rod (3) connecting the storage platform (1) and the base plate (2), a spring (4) surrounding the telescopic guide rod (3), and an adjusting shim (5) provided on the base plate (2); one end of the spring (4) is connected to the bottom of the storage platform (1), and the other end is connected to the adjusting shim (5); The negative stiffness component includes a fixed housing (6) disposed on the base plate (2), a fixed magnet array (7) disposed inside the fixed housing (6), and a moving magnet array (8) disposed at the bottom of the storage platform (1) and capable of extending into the fixed housing (6); the horizontal central axis of the initial position of the moving magnet array (8) coincides with the horizontal central axis of the fixed magnet array (7); The fixed magnet array (7) is composed of several first fixed magnets (71) and second fixed magnets (72) arranged vertically in a Heilbeck array; the moving magnet array (8) is composed of several moving magnets (81) arranged vertically, and the sum of the vertical positive stiffness of the springs (4) is equal to the maximum negative stiffness of the moving magnet array (8); in each fixed magnet array (7), the number of first fixed magnets (71) is n, the number of second fixed magnets (72) is n-1, and n≥4; in each moving magnet array (8), the number of moving magnets (81) is n-2; The active electromagnetic component includes a metal coil (9) disposed within a fixed housing (6) for adjusting the magnetic field strength in real time and applying a changing magnetic force to the moving magnet (81); both the fixed magnet array (7) and the moving magnet array (8) are provided in two sets and are symmetrically distributed about the metal coil (9); in the active electromagnetic component, the total number of the metal coils (9) is n-3; when the number of metal coils (9) is >1, the current direction of adjacent metal coils (9) after being energized is opposite; The magnetization direction of the moving magnet (81) is opposite to that of the adjacent first fixed magnet (71), and the magnetization directions of the adjacent moving magnets (81) are opposite. The magnetization directions of the moving magnets (81) at the same height position are the same.

2. The Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 1, characterized in that, The fixed shell (6) is a regular quadrilateral structure, and four sets of positive stiffness components are provided and symmetrically distributed at the four corners of the fixed shell (6).

3. The Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 1, characterized in that, The platform (1) includes a platform top plate (11) for supporting the object to be isolated and a mounting frame (12) located at the bottom of the platform top plate (11). The mounting frame (12) has a plurality of moving magnet fixing slots (13) vertically arranged on its upper edge.

4. The Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 3, characterized in that, The base plate (2) is provided with a coil fixing groove (91) for loading a metal coil (9), and the coil fixing groove (91) is located between the mounting brackets (12).

5. The Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 1, characterized in that, The adjusting shim (5) is made of two shims spliced ​​together, and both shims have semi-circular holes with diameters that match the diameter of the telescopic guide rod (3).

6. A Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 5, characterized in that, The adjustment shims (5) are provided in at least two, and several adjustment shims (5) can be placed between the top adjustment shim (5) and the bottom plate (2).

7. The Heilbeck electromagnetic quasi-zero stiffness vibration isolation platform according to claim 1, characterized in that, The metal coil (9) is made of enameled metal wire, and the metal material includes any one of copper, aluminum, nickel, gold and platinum.

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