Cross two-way vibration absorber

Abstract

The utility model provides a kind of cross two-way vibration absorber, it includes: rack assembly, first coil assembly is equipped on it;Mass block, it is set on the rack assembly and can be moved relative to the rack assembly along first direction;Guide plate frame, it is set on the mass block and can be moved relative to the mass block along second direction perpendicular to the first direction, second coil assembly is provided on the guide plate frame;Wherein, first direction guide rod along first direction and second direction guide rod along second direction are provided on the mass block, the both ends of the first direction of the first direction guide rod are respectively equipped with the magnetic steel surrounded by the coil of the first coil assembly, the both ends of the second direction of the second direction guide rod are respectively equipped with the magnetic steel surrounded by the coil of the second coil assembly, and elastic component is respectively equipped between the mass block and the rack assembly and between the mass block and the guide plate frame. By the magnetic force line of coil cutting magnetic steel generates induced current, and by resistance energy consumption, play the role of damping.

Description

Technical Field

[0001] This utility model relates to the field of elevator technology, and more specifically, to a cross-shaped bidirectional vibration absorber for elevator permanent magnet synchronous traction machines. Background Technology

[0002] With the development of modern society, elevators have become essential equipment in people's production and daily life. Permanent magnet synchronous motors, with their advantages of simple structure, small size, high efficiency, and high power factor, have largely replaced traditional worm gear asynchronous motors, becoming the mainstream choice for modern elevator traction machines. While permanent magnet synchronous traction machines have significant advantages in electromechanical performance, their vibration and noise problems are also quite prominent.

[0003] Conventional vibration and noise control for permanent magnet synchronous traction machines involves adding vibration isolators, which means installing rubber pads between the traction machine base and the load-bearing beam to isolate vibration.

[0004] However, aging and creep of rubber materials can easily lead to unstable mechanical properties, causing vibration isolation performance to deteriorate over time. Utility Model Content

[0005] In view of the shortcomings of existing vibration reduction technologies commonly used for permanent magnet synchronous traction machines, this utility model provides a cross-shaped bidirectional vibration absorber. Through the designed dynamic structure of 2D magnetic steel coil and spring element, it achieves the function of damping and absorbing vibration in both vertical and horizontal directions, avoiding the problems of shortened service life and reduced vibration isolation performance caused by the aging of rubber materials in traditional vibration isolators.

[0006] In one embodiment of the utility model, the cross-shaped bidirectional vibration absorber includes:

[0007] A frame assembly on which a first coil assembly is mounted;

[0008] A mass block, which is configured on the rack assembly to be movable relative to the rack assembly in a first direction;

[0009] A guide frame is disposed on the mass block and is movable relative to the mass block in a second direction perpendicular to the first direction, and a second coil assembly is disposed on the guide frame.

[0010] The mass block is provided with a first direction guide rod along a first direction and a second direction guide rod along a second direction. The first direction guide rod has magnets surrounded by the coils of the first coil assembly at both ends in the first direction. The second direction guide rod has magnets surrounded by the coils of the second coil assembly at both ends in the second direction. Elastic members are provided between the mass block and the frame assembly and between the mass block and the guide plate frame.

[0011] In some embodiments, the rack assembly includes:

[0012] First side panel;

[0013] The second side plate opposite to the first side plate;

[0014] A first cover plate is disposed near one end of the first side plate and the second side plate and connected between the two side plates; and

[0015] A second cover plate is disposed near the other end of the first and second side plates and connected between the two side plates;

[0016] The surfaces of the first side plate and the second side plate facing each other are provided with slide rails along a first direction.

[0017] In some embodiments, the mass block has:

[0018] The first and second surfaces are opposite each other in the first direction;

[0019] The third and fourth surfaces opposite each other in the second direction; and

[0020] On the fifth and sixth surfaces facing each other from the third direction, the first direction, the second direction, and the third direction are orthogonal to each other;

[0021] The fifth and sixth surfaces are respectively provided with grooves that penetrate the third and fourth surfaces along the second direction, and sliders that can slidably engage with the slide rail are installed on them.

[0022] In some embodiments, the first directional guide rod includes a first guide rod and a second guide rod respectively mounted on the first surface and the second surface; the second directional guide rod includes a third guide rod and a fourth guide rod respectively mounted on the third surface and the fourth surface.

[0023] In some embodiments, the guide plate frame includes: a first side guide plate;

[0024] A second side guide plate opposite to the first side guide plate;

[0025] A third cover plate is disposed near one end of the first and second side guide plates and connected between the two side guide plates; and

[0026] A fourth cover plate is disposed on the other side near the first side guide plate and the second side guide plate and connected between the two side guide plates;

[0027] The first side guide plate and the second side guide plate are slidably mounted in the grooves on the mass block.

[0028] In some embodiments, the first cover plate and the second cover plate each have holes through which the first guide rod and the second guide rod pass, and the third cover plate and the fourth cover plate each have holes through which the third guide rod and the fourth guide rod pass.

[0029] In some embodiments, the magnet comprises:

[0030] A first magnet is provided at the end of the first guide rod that passes through the hole in the first cover plate;

[0031] A second magnet is provided at the end of the second guide rod that passes through the hole in the second cover plate;

[0032] A third magnet is provided at the end of the hole through which the third guide rod passes in the third cover plate; and

[0033] A fourth magnet is provided at the end of the hole through which the fourth guide rod passes in the fourth cover plate.

[0034] In some embodiments, the first coil assembly includes a first coil disposed on the first cover plate and surrounding the first magnet and a second coil disposed on the second cover plate and surrounding the second magnet; the second coil assembly includes a third coil disposed on the third cover plate and surrounding the third magnet and a fourth coil disposed on the fourth cover plate and surrounding the fourth magnet.

[0035] In some embodiments, the elastic member includes:

[0036] A first spring abutting between the first cover plate and the first surface;

[0037] A second spring abutting between the second cover plate and the second surface;

[0038] A third spring abutting between the third cover plate and the third surface; and

[0039] A fourth spring abuts between the fourth cover plate and the fourth surface.

[0040] In some embodiments, the rack assembly further includes:

[0041] A mounting plate is connected to the first side plate and the second side plate at either end in the first direction, and the mounting plate is provided with through holes for fasteners to pass through, so as to install the cross-shaped bidirectional vibration absorber to the target device.

[0042] As can be seen from the above embodiments, this invention does not attempt to "isolate" vibration, but rather adds a spring-mass-damping subsystem (vibration absorber) to the main vibration system (e.g., a traction machine). According to this system, the natural frequency of the vibration absorber can be designed to match the main excitation frequency of the traction machine (such as the torque pulsation frequency). When the traction machine vibrates, the vibration absorber generates a reaction force that is opposite in direction and similar in magnitude to the vibration of the traction machine, thereby "absorbing" or "counteracting" the vibration energy of the main system.

[0043] Its main advantages compared to other vibration isolation and damping measures are:

[0044] (1) Highly targeted: It can accurately target and suppress specific frequency vibrations caused by torque pulsation, etc.

[0045] (2) Significant effect: The control effect on resonance peak is far superior to that of ordinary vibration isolation pads.

[0046] (3) Reinstallation capability and economy: It can be designed and installed as an independent component without changing the design of the traction machine itself, providing a flexible and efficient way for vibration control of existing elevators and optimization design of new elevators.

[0047] (4) It can achieve vibration reduction in both vertical and horizontal main vibration directions.

[0048] The various aspects, features, and advantages of the embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Attached Figure Description

[0049] Figure 1 This is a perspective view showing a cross-shaped bidirectional vibration absorber according to an exemplary embodiment of the present invention.

[0050] Figure 2 It is shown Figure 1 A schematic diagram of the frame assembly of a cross-shaped bidirectional vibration absorber.

[0051] Figure 3 It is shown Figure 1 A schematic diagram of the mass block of the cross-shaped bidirectional vibration absorber mounted on the frame assembly, omitting one side plate of the frame assembly.

[0052] Figure 4 It is shown Figure 1 A schematic diagram of the mass block and guide plate frame of the cross-shaped bidirectional vibration absorber mounted on the frame assembly, omitting one side plate of the frame assembly.

[0053] Figure 5 This is a perspective view showing an example structure of a coil assembly.

[0054] Figure 6 It is shown Figure 1A schematic diagram of a cross-shaped bidirectional vibration absorber installed on a traction machine. Detailed Implementation

[0055] The exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the present invention can have various embodiments and is not limited to the specific embodiments described herein or shown in the accompanying drawings.

[0056] The descriptions of element positions in this document (such as "top," "bottom," "above," "below," "left," "right," etc.) are used only to indicate the relative orientation of elements in the accompanying drawings. These descriptions are merely examples and are not intended to be limiting. In other embodiments, the orientation of the elements may differ, and these variations are also included within the scope of this disclosure.

[0057] Furthermore, terms such as “substantially,” “about,” and “roughly” are used herein as descriptive terms rather than as limitations on precision. These terms are intended to cover a reasonable range of error in production, measurement, or calculation that would be recognized by someone skilled in the art. Terms such as “comprising,” “including,” and “having” are used herein to indicate the presence of certain features, steps, operations, elements, and / or components, but do not exclude the presence or addition of other features, steps, operations, elements, components, or combinations thereof. Unless explicitly stated in the context, terms such as “first,” “second,” and similar terms do not indicate any priority or order, but are used only to distinguish different elements in the description.

[0058] To further clarify, the term "connection" and related terms used herein refer to the direct or indirect linking of two components. This connection can be fixed (e.g., permanent or non-removable) or movable (e.g., detachable or releasable). Connection methods include, but are not limited to: direct connection between two components, indirect connection via an intermediate component, and connection via an intermediate component integrally formed with one of the components.

[0059] The following is combined with Figures 1 to 5 Exemplary embodiments of the cross-shaped bidirectional vibration absorber of this utility model will be described. Figure 1 The schematic diagram illustrates the overall cross-shaped bidirectional vibration absorber according to an exemplary embodiment of the present invention. Figure 2 Schematic illustration Figure 1 Example structure of the frame assembly of a cross-shaped bidirectional vibration absorber. Figure 3 Schematic illustration Figure 1 The mass block of the cross-shaped bidirectional vibration absorber is mounted on the frame assembly, which omits one side plate of the frame assembly. Figure 4 schematically shown Figure 1 The mass block and guide plate frame of the cross-shaped bidirectional vibration absorber are mounted on the frame assembly, which omits one side plate of the frame assembly. Figure 5An example structure of a coil assembly is shown schematically.

[0060] In an exemplary embodiment, the cross-shaped bidirectional vibration absorber includes at least a frame assembly 100, a mass block 200, and a guide frame 300. The mass block 200 is disposed on the frame assembly 100 and is movable relative to the frame assembly 100 along a first direction. The guide frame 300 is disposed on the mass block 200 and is movable relative to the mass block 200 along a second direction perpendicular to the first direction. The frame assembly 100 is provided with a first coil assembly 410. The guide frame 300 is provided with a second coil assembly 420. The mass block 200 is provided with a first direction guide rod 510 along a first direction and a second direction guide rod 520 along a second direction. At both ends of the first direction guide rod 510, magnets 430 surrounded by the coils of the first coil assembly 410 are respectively provided. At both ends of the second direction guide rod 520, magnets surrounded by the coils of the second coil assembly 420 are respectively provided (not shown in the figure due to perspective issues). Elastic members 600 are provided between the mass block 200 and the frame assembly 100, and between the mass block 200 and the guide plate frame 300. In an exemplary embodiment, the first direction is the up-down direction (vertical direction), also referred to as the Y direction; the second direction is a direction in the horizontal plane, also referred to as the X direction; and the other direction in the horizontal plane is the Z direction (hereinafter referred to as the third direction).

[0061] In some implementations, such as Figure 6 As shown, the cross-shaped bidirectional vibration absorber of this invention is suitable for installation on an elevator permanent magnet synchronous traction machine 700, for example, using the hoisting hole on the upper part of the traction machine. With the vibration of the traction machine, the mass block 200 and the guide plate frame 300 can slide up and down together and / or the guide plate frame 300 can sway horizontally. When the mass block 200 slides up and down along the slide rail or the guide plate frame 300 sways horizontally relative to the mass block 200, the coil of the first coil assembly 410 or the second coil assembly 420 cuts the magnetic lines of force of the magnet to generate an induced current, and the energy is consumed by the resistor, thereby playing a damping role. Therefore, the cross-shaped bidirectional vibration absorber of this invention has two degrees of freedom, vertical and horizontal, and can simultaneously absorb the vibration of the permanent magnet synchronous traction machine in both vertical and horizontal directions, achieving the purpose of vibration reduction.

[0062] In some implementations, such as Figure 2As shown, the rack assembly 100 includes: a first side plate 110; a second side plate 120 opposite to the first side plate; a first cover plate 130 disposed near one end (shown as the upper end) of the first side plate 110 and the second side plate 120 and connected between the two side plates; and a second cover plate 140 disposed near the other end (shown as the lower end) of the first side plate 110 and the second side plate 120 and connected between the two side plates. Optionally, the rack assembly 100 includes a mounting plate 150 connected to the lower end of the first side plate 110 and the second side plate 120, having through holes 151 for fasteners to pass through, to mount the cross-shaped bidirectional vibration absorber to the target device, such as... Figure 6 As shown, the cross-shaped bidirectional vibration absorber is installed onto the elevator permanent magnet synchronous traction machine 700. For example, the mounting plate has through holes on both the side and bottom. The bottom through hole is suitable for installing the device in the mounting hole, and the side through holes, i.e. Figure 1 The through-hole 151 shown is suitable for traction machines with fixed lifting lugs. Furthermore, as... Figure 2 As shown, the opposing surfaces of the first side plate 110 and the second side plate 120 are provided with a slide rail 101 along the Y direction. The slide rail 101 is used to engage with the slider 102 described later and guide the slider 102 to slide freely in the Y direction.

[0063] In some implementations, such as Figure 3 As shown, the mass block 200 has: a first surface 201 and a second surface 202 opposite each other in a first direction (Y direction); a third surface 203 and a fourth surface 204 opposite each other in a second direction (X direction); and a fifth surface 205 and a sixth surface 206 opposite each other in a third direction (Z direction). The fifth surface 205 and the sixth surface 206 each have a groove 210 extending through the third surface 203 and the fourth surface 204 in the second direction, and a slider 102 is mounted thereon that is slidably engaged with the slide rail 101. Here, "slidably engaged" means that the slider 102 engages with the slide rail 101 and can slide freely along the slide rail 101. Therefore, the mass block 200 can slide freely in the Y direction.

[0064] In some embodiments, the first directional guide rod 510 includes a first guide rod (the angle is not shown in the figure due to being surrounded by a spring) and a second guide rod 512 respectively mounted on the first surface 201 and the second surface 202 of the mass block 200. Furthermore, the second directional guide rod 520 includes a third guide rod 521 and a fourth guide rod 522 respectively mounted on the third surface 203 and the fourth surface 204. Figure 1 , Figure 3 and Figure 4In this configuration, the length directions of the first and second guide rods are along the Y direction, and the length directions of the third and fourth guide rods are along the X direction.

[0065] In some implementations, such as Figure 1 and Figure 4 As shown, the guide plate frame 300 includes: a first side guide plate 310; a second side guide plate 320 opposite to the first side guide plate 310; a third cover plate 330 disposed near one end (left side in the figure) of the first side guide plate 310 and the second side guide plate 320 and connected between the two side guide plates; and a fourth cover plate 340 disposed near the other end (right side in the figure) of the first side guide plate 310 and the second side guide plate 320 and connected between the two side guide plates. The first side guide plate 310 and the second side guide plate 320 are slidably mounted in a groove 210 on the mass block 200. Here, "slidably mounted" means that the first side guide plate 310 and the second side guide plate 310 are mounted in the groove 210 on the mass block 200 and can slide freely along the groove 210. Furthermore, the guide plate frame 300 can slide freely relative to the mass block 200 in the X direction.

[0066] In some embodiments, the first cover plate 130 and the second cover plate 140 respectively have holes for the first guide rod and the second guide rod to pass through, and the third cover plate 330 and the fourth cover plate 340 have holes for the third guide rod and the fourth guide rod to pass through.

[0067] In some implementations, such as Figure 1 , Figure 3 and Figure 4 As shown, the magnet 430 includes: a first magnet disposed at the end of the first guide rod passing through the hole of the first cover plate 130; a second magnet disposed at the end of the second guide rod 512 passing through the hole of the second cover plate 140; a third magnet disposed at the end of the third guide rod passing through the hole of the third cover plate 330; and a fourth magnet disposed at the end of the fourth guide rod passing through the hole of the fourth cover plate 340.

[0068] In some implementations, such as Figure 1 , Figure 3 and Figure 4 As shown, the first coil assembly 410 includes a first coil 411 disposed on the first cover plate 130 and surrounding the first magnet, and a second coil 412 disposed on the second cover plate 140 and surrounding the second magnet. The second coil assembly 420 includes a third coil 421 disposed on the third cover plate 330 and surrounding the third magnet, and a fourth coil 422 disposed on the fourth cover plate 340 and surrounding the fourth magnet.

[0069] It should be noted that in the accompanying drawings, the first to fourth magnets are surrounded by the corresponding coils described below, so they cannot all be shown and therefore no reference numerals have been added, but this does not prevent those skilled in the art from understanding.

[0070] In some implementations, such as Figure 1 , Figure 3 and Figure 4 As shown, the elastic component 600 includes: a first spring 601 abutting between the first cover plate 130 and the first surface 201 of the mass block 200; a second spring 602 abutting between the second cover plate 140 and the second surface 202 of the mass block 200; a third spring 603 abutting between the third cover plate 330 and the third surface 203 of the mass block 200; and a fourth spring 604 abutting between the fourth cover plate 340 and the fourth surface 204 of the mass block 200. These springs are respectively fitted around the outer periphery of the corresponding guide rod.

[0071] With the vibration of the traction machine, due to the slidable engagement of the slider 102 and the slide rail 101, the mass block 200 moves up and down in the first direction (Y direction) via the first spring 601 and the second spring 602; due to the slidable engagement of the first side guide plate 310 and the second side guide plate 320 with the corresponding groove 210, the guide plate frame 300 moves horizontally in the second direction (X direction) via the second spring 602 and the third spring 603. If the mass block 200 moves up and down, it drives the first guide rod and the first magnet and the second guide rod and the second magnet to move up and down, so that: the first magnet and the first coil 411 move relative to each other, causing the first coil 411 to cut the magnetic lines of force of the first magnet to generate an induced current; the second magnet and the second coil 412 move relative to each other, causing the second coil 412 to cut the magnetic lines of force of the second magnet to generate an induced current. If the guide frame 300 moves horizontally reciprocatingly, it drives the third guide rod and the third magnet, as well as the fourth guide rod and the fourth magnet, to move horizontally reciprocatingly as well. This causes the third magnet and the third coil 421 to move relative to each other, resulting in the third coil 421 cutting the magnetic lines of force of the third magnet and generating an induced current; similarly, the fourth magnet and the fourth coil 422 move relative to each other, resulting in the fourth coil 422 cutting the magnetic lines of force of the fourth magnet and generating an induced current. Thus, the mechanical energy generated by the vibration of the traction machine is converted into electrical energy. Furthermore, this induced current can be consumed by the load circuit, thereby providing a damping effect.

[0072] As can be seen from the above, the vibration absorber of this invention has two degrees of freedom, vertical and horizontal, and can simultaneously absorb the vibrations of the permanent magnet synchronous traction machine in both vertical and horizontal directions. Furthermore, the vibration absorber of this invention adopts a mechanical passive vibration absorption method, with a compact structure, thus exhibiting better environmental adaptability and durability.

[0073] Furthermore, the vibration absorber of this invention uses a combination of coil windings and magnets as a damper, which has a wider operating frequency range compared to undamped vibration absorbers, and can achieve better vibration control.

[0074] The vibration absorber of this invention can have its main vibration absorption frequency (i.e., the natural frequency of the vibration absorber) adjusted to match the main excitation frequency of the traction machine. Thus, when the traction machine vibrates, the vibration absorber will generate a reaction force that is opposite in direction and similar in magnitude to the vibration of the traction machine. This "absorbs" or "cancels out" the vibration energy of the traction machine through the electromagnetic induction described above, and the control effect on the resonance peak is far superior to that of ordinary vibration isolation pads.

[0075] In some implementations, the main vibration frequency can be adjusted by adding or removing mass on the mass block 200 and / or guide frame 300, or by changing the spring, according to the following formula.

[0076]

[0077] In the formula: ω0 is the natural frequency of the vibration absorber; k is the spring stiffness (which can be adjusted by changing the spring); m is the working mass of the vibration absorber (which can be adjusted by increasing or decreasing the mass).

[0078] By adjusting the mass of the mass block 200, the acting mass in the vertical direction can be changed without changing the acting mass in the horizontal direction. Adding or removing mass on the guide plate frame 300 can simultaneously change the acting mass in both the horizontal and vertical directions. Therefore, this invention allows for flexible adjustment of the main vibration absorption frequency (i.e., the natural frequency of the vibration absorber) according to actual conditions.

[0079] Furthermore, by adjusting the natural frequency of the vibration absorber, this invention can precisely target and suppress vibrations at specific frequencies caused by torque pulsation, etc.

[0080] Those skilled in the art should understand that the above disclosure is merely illustrative of the embodiments of this invention, and the scope of the patent protection claimed in this application is not limited thereto. Although this utility model has been described using elevator traction machine vibration reduction as an example, it should be understood that the cross-shaped bidirectional vibration absorber proposed in this utility model can be applied to other devices requiring vibration reduction. It should also be understood that various modifications, alterations, substitutions, and other changes can be made to the embodiments disclosed herein without departing from the spirit of this utility model, and such changes are within the scope covered by the claims of this application.

Claims

1. A cross-shaped bidirectional vibration absorber, characterized in that, include: A frame assembly on which a first coil assembly is mounted; A mass block, which is configured on the rack assembly to be movable relative to the rack assembly in a first direction; A guide frame is disposed on the mass block and is movable relative to the mass block in a second direction perpendicular to the first direction, and a second coil assembly is disposed on the guide frame. The mass block is provided with a first direction guide rod along a first direction and a second direction guide rod along a second direction. The first direction guide rod has magnets surrounded by the coils of the first coil assembly at both ends in the first direction. The second direction guide rod has magnets surrounded by the coils of the second coil assembly at both ends in the second direction. Elastic members are provided between the mass block and the frame assembly and between the mass block and the guide plate frame.

2. The cross-shaped bidirectional vibration absorber according to claim 1, characterized in that, The rack assembly includes: First side panel; The second side plate opposite to the first side plate; A first cover plate is disposed near one end of the first side plate and the second side plate and connected between the two side plates; and A second cover plate is disposed near the other end of the first and second side plates and connected between the two side plates; The surfaces of the first side plate and the second side plate facing each other are provided with slide rails along a first direction.

3. The cross-shaped bidirectional vibration absorber according to claim 2, characterized in that, The mass block has: The first and second surfaces are opposite each other in the first direction; The third and fourth surfaces are opposite each other in the second direction; as well as On the fifth and sixth surfaces facing each other from the third direction, the first direction, the second direction, and the third direction are orthogonal to each other; The fifth and sixth surfaces are respectively provided with grooves that penetrate the third and fourth surfaces along the second direction, and sliders that can slidably engage with the slide rail are installed on them.

4. The cross-shaped bidirectional vibration absorber according to claim 3, characterized in that, The first directional guide rod includes: a first guide rod and a second guide rod respectively mounted on the first surface and the second surface; The second directional guide rod includes a third guide rod and a fourth guide rod respectively mounted on the third surface and the fourth surface.

5. The cross-shaped bidirectional vibration absorber according to claim 4, characterized in that, The guide plate frame includes: a first side guide plate; A second side guide plate opposite to the first side guide plate; A third cover plate is disposed near one end of the first and second side guide plates and connected between the two side guide plates; and A fourth cover plate is disposed on the other side near the first side guide plate and the second side guide plate and connected between the two side guide plates; The first side guide plate and the second side guide plate are slidably mounted in the grooves on the mass block.

6. The cross-shaped bidirectional vibration absorber according to claim 5, characterized in that, The first cover plate and the second cover plate each have holes for the first guide rod and the second guide rod to pass through, and the third cover plate and the fourth cover plate each have holes for the third guide rod and the fourth guide rod to pass through.

7. The cross-shaped bidirectional vibration absorber according to claim 6, characterized in that, The magnet includes: A first magnet is provided at the end of the first guide rod that passes through the hole in the first cover plate; A second magnet is provided at the end of the second guide rod that passes through the hole in the second cover plate; A third magnet is provided at the end of the hole through which the third guide rod passes in the third cover plate; and A fourth magnet is provided at the end of the hole through which the fourth guide rod passes in the fourth cover plate.

8. The cross-shaped bidirectional vibration absorber according to claim 7, characterized in that, The first coil assembly includes a first coil disposed on the first cover plate and surrounding the first magnet, and a second coil disposed on the second cover plate and surrounding the second magnet; The second coil assembly includes a third coil disposed on the third cover plate and surrounding the third magnet, and a fourth coil disposed on the fourth cover plate and surrounding the fourth magnet.

9. The cross-shaped bidirectional vibration absorber according to claim 6, characterized in that, The elastic component includes: A first spring abutting between the first cover plate and the first surface; A second spring abutting between the second cover plate and the second surface; A third spring abutting between the third cover plate and the third surface; and A fourth spring abuts between the fourth cover plate and the fourth surface.

10. The cross-shaped bidirectional vibration absorber according to claim 2, characterized in that, The rack assembly also includes: A mounting plate is connected to the first side plate and the second side plate at either end in the first direction, and the mounting plate is provided with through holes for fasteners to pass through, so as to install the cross-shaped bidirectional vibration absorber to the target device.

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