A vibration isolation device and a vibration isolation system

Abstract

The application discloses a kind of vibration isolation device and vibration isolation system, belong to vibration noise isolation technical field.The vibration isolation device provided by the application includes first vibration isolation unit and second vibration isolation unit, first vibration isolation unit includes buffer, vibration-absorbing member and pedestal, buffer is set to vibration-absorbing member, vibration-absorbing member is set to pedestal;Buffer includes top seat, guide seat and buffer spring, two ends of buffer spring are connected top seat and guide seat respectively, the straight line where the axis of buffer spring is first straight line, top seat and guide seat move along first straight line;Guide seat is set to vibration-absorbing member, vibration-absorbing member includes vibration isolation rubber, vibration isolation rubber has first stiffness on first straight line, the stiffness of buffer spring and first stiffness are same.Second vibration isolation unit is set to top seat, and second vibration isolation unit includes particle damper.The vibration isolator of the application is constructed by connecting buffer spring and vibration isolation rubber, compared with pure rubber vibration isolator, can be substantially reduced inherent frequency.

Description

Technical Field

[0001] This application relates to the field of vibration and noise isolation technology, specifically to a vibration isolation device and a vibration isolation system. Background Technology

[0002] In the existing technology, the internal combustion engine is both a power source and a vibration source. It usually needs to be equipped with a suitable vibration isolation device to attenuate the transmission of vibration noise. Commonly used vibration isolators include rubber vibration isolation devices, metal spring vibration isolation devices and liquid resistance vibration isolation devices. However, their stiffness is singular, their damping is limited and their vibration isolation frequency range is narrow, making it difficult to meet the vibration isolation performance requirements of medium and low speed internal combustion engines. Summary of the Invention

[0003] The purpose of this application is to provide a vibration isolation device and a vibration isolation system that can solve the above-mentioned technical problems.

[0004] In a first aspect, embodiments of this application provide a vibration isolation device, including a first vibration isolation unit. The first vibration isolation unit includes a buffer, a vibration absorber, and a base. The buffer is disposed on the vibration absorber, and the vibration absorber is disposed on the base.

[0005] The buffer component includes a top seat, a guide seat, and a buffer spring. The two ends of the buffer spring are respectively connected to the top seat and the guide seat. The axis of the buffer spring is located on a first straight line, and the top seat and the guide seat move along the first straight line.

[0006] The guide seat is disposed on the vibration-absorbing member, the vibration-absorbing member includes vibration-damping rubber, the vibration-damping rubber has a first stiffness on the first straight line, and the stiffness of the buffer spring is the same as the first stiffness.

[0007] In some embodiments, the vibration-damping rubber is shaped like a frustum, the frustum including an upper base, a lower base and a generatrix, the included angle between the generatrix and the lower base of the frustum is α, 60°≤α≤90°, the straight line containing the axis of the frustum is a second straight line, and the first straight line and the second straight line are collinear;

[0008] Along the second straight line, the upper bottom surface and the lower bottom surface are connected: a first opening is formed on the upper bottom surface and a second opening is formed on the lower bottom surface;

[0009] The outer wall of the guide seat is provided with a first retaining ring. Along the first straight line, one end of the guide seat is the first end, which is connected to the top seat. The other end of the guide seat is the second end, which is inserted into the first opening. The first retaining ring abuts against the upper bottom surface.

[0010] The bottom surface is connected to the base.

[0011] In some embodiments, the base includes a second surface that abuts against the lower bottom surface, a second retaining ring is disposed on the second surface, and the outer edge of the lower bottom surface abuts against the inner wall of the second retaining ring.

[0012] In some embodiments, a limiting platform is provided at the second end of the guide seat, and a limiting hole is opened on the base. Along the second straight line, the projection of the limiting hole covers the projection of the limiting platform.

[0013] The inner wall of the limiting hole is covered with a first rubber layer, and the second surface of the base is covered with a second rubber layer, the second rubber layer and the first rubber layer being integrally formed.

[0014] In some embodiments, the compression of the buffer spring ranges from 10mm to 20mm.

[0015] In some embodiments, a second vibration isolation unit is further included, the second vibration isolation unit being disposed on the top seat, the surface of the top seat for contacting the vibration source being a first surface, the second vibration isolation unit being located on the side of the first surface near the top seat, and the second vibration isolation unit including a particle damper.

[0016] In some embodiments, the particle filling rate of the particle damper ranges from 60% to 90%.

[0017] In some embodiments, the particle filler in the particle damper is made of iron, copper, and / or tungsten.

[0018] In some embodiments, the outer surface of the particle filler in the particle damper is provided with a viscoelastic coating, the friction factor of the particle filler is 0.1-0.8, and the surface recovery coefficient of the particle filler is 0.5-0.8.

[0019] In some embodiments, the particle size range of the particle filler in the particle damper is 1 mm to 5 mm.

[0020] In some embodiments, an oil-proof cap is provided on the first retaining ring, and along the first straight line, the projection of the oil-proof cap covers the projection of the outer wall of the frustum and the second retaining ring.

[0021] In some embodiments, a first mounting groove is provided at the first end of the guide seat, a self-lubricating bearing is nested in the inner wall of the first mounting groove, and the self-lubricating bearing is slidably connected to the outer wall of the top seat.

[0022] In some embodiments, a second mounting groove is provided at one end of the top seat facing the guide seat, and a spring insert is provided at the bottom of the second mounting groove. One end of the buffer spring is inserted into the spring insert and abuts against the bottom of the second mounting groove, and the other end of the buffer spring abuts against the bottom of the first mounting groove.

[0023] Secondly, this application provides a vibration isolation system, including a mounting plate and a vibration isolation device as described in any one of the first aspects, wherein multiple vibration isolation devices are provided;

[0024] The mounting plate is used to connect to and support the vibration source;

[0025] Multiple vibration isolation devices are evenly distributed on the surface of the mounting plate, the first surface is connected to the mounting plate, and the base is used to connect to the surface to be fixed.

[0026] The beneficial effects of this application are as follows: Compared with the prior art, this application provides a vibration isolation device and a vibration isolation system. This application constructs a vibration isolator by connecting a buffer spring and vibration isolation rubber in series. When the stiffness of the buffer spring and the vertical stiffness of the vibration isolation rubber are the same, compared with a pure rubber vibration isolator, the vibration isolator constructed in series in this application can significantly reduce the natural frequency. In this application, a particle damper is provided on the top seat, and damping particles are provided inside the particle damper. Vibration energy is absorbed and vibration is reduced through friction and collision between the damping particles and between the damping particles and the cavity. In this application, a buffer spring is provided between the top seat and the guide seat for vibration buffering, and vibration isolation rubber is provided between the guide seat and the base as a vibration absorbing element. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A cross-sectional view of the vibration isolation device provided in this application;

[0029] Figure 2 A cross-sectional view of the vibration isolation rubber in the vibration isolation device provided in this application;

[0030] Figure 3 A schematic diagram of the vibration isolation system provided in this application;

[0031] Figure 4 For existing vibration isolation devices;

[0032] In the diagram: 100, buffer component; 110, top seat; 111, second mounting groove; 112, spring insert; 120, guide seat; 121, first retaining ring; 122, limiting platform; 123, oil-proof cap; 124, first mounting groove; 130, buffer spring; 140, self-lubricating bearing; 200, vibration-absorbing component; 210, vibration-damping rubber; 211, upper bottom surface; 212, lower bottom surface; 213, first opening; 214, second opening; 300, particle damper; a, first straight line; b, second straight line; c, busbar; 400, base; 410, second retaining ring; 420, limiting hole; 421, first rubber layer; 422, second rubber layer; 500, mounting plate; A, first surface; B, second surface. Detailed Implementation

[0033] 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.

[0034] In the description of this application, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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. Therefore, they should not be construed as limitations on this application.

[0035] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium; or they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0037] Example 1:

[0038] This application provides a vibration isolation device, such as... Figures 1 to 2 As shown, this application firstly, a buffer spring 130 is designed to buffer the received vibration. This application also includes a vibration-damping rubber 210 to absorb the buffered vibration, thus achieving vibration isolation. Simultaneously, this application connects the buffer spring 130 and the vibration-damping rubber 210 in series to construct a vibration isolator, and sets the stiffness of the buffer spring 130 and the vertical stiffness of the vibration-damping rubber 210 to be the same. This series-connected vibration isolator design can effectively reduce the natural frequency compared to a simple rubber vibration isolator. The natural frequency of the series-connected vibration isolator in this application can be reduced to 70% of the natural frequency of a simple rubber vibration isolator. Furthermore, this application includes a particle damper 300, which can further absorb vibration and improve the vibration isolation effect.

[0039] In the specific design, such as Figure 1 As shown, this application includes a first vibration isolation unit, which is used to implement the design of a series combined vibration isolator. Therefore, the first vibration isolation unit includes a buffer 100 and a vibration absorber 200. The buffer 100 includes a top seat 110, a guide seat 120, and a buffer spring 130. One side of the top seat 110 is used to contact the vibration source, which is the first surface A. The other side of the top seat 110 is provided with a second mounting groove 111 for accommodating and fixing the buffer spring 130. To fix the buffer spring 130, a spring insert 112 is provided at the bottom of the second mounting groove 111. When designing the spring insert 112, the circumscribed circle of the spring insert 112 is... The diameter can be the same as the inner diameter of the buffer spring 130, which facilitates the buffer spring 130 to be sleeved and fixed on the spring insert 112. At the same time, the inside of the spring insert 112 can be slotted, and the diameter of the inner circle of the slot is the same as the outer diameter of the buffer spring 130, which facilitates the buffer spring 130 to be sleeved in the slot of the spring insert 112. In this application, the spring insert 112 is designed with the diameter of the outer circle of the spring insert 112 being the same as the inner diameter of the buffer spring 130. After one end of the buffer spring 130 is inserted into the spring insert 112, it abuts against the bottom of the second mounting slot 111. The compression range of the buffer spring 130 is set in the range of 10mm-20mm.

[0040] In designing the guide seat 120, to accommodate the reciprocating extension and retraction of the buffer spring 130, this application slides the top seat 110 and the guide seat 120 together. Specifically, in designing the sliding connection structure, this application nests a self-lubricating bearing 140 within the inner wall of the first mounting groove 124. The self-lubricating bearing 140 slides through the outer wall of the top seat 110, achieving a sliding connection between the top seat 110 and the guide seat 120. The straight line along the spring extension and retraction direction is the first straight line a. Along the first straight line a, one end of the guide seat 120 is the first end, and the first mounting groove 124 is opened on the first end. One end of the buffer spring 130 is inserted into the spring insert 112 and then abuts against the bottom of the second mounting groove 111. The other end of the buffer spring 130 abuts against the bottom of the second mounting groove 111. After the top seat 110 receives vibration from the vibration source, the vibration is transmitted to the buffer spring 130 after passing through the top seat 110. The buffer spring 130, after receiving the vibration, will… The reciprocating extension and retraction motion can be performed by any number of buffer springs 130. When there is only one buffer spring 130, it is located at the geometric center line of the top seat 110 and the guide seat 120 to ensure uniform force distribution. If both the top seat 110 and the guide seat 120 are cylindrical structures, the axis of the buffer spring 130 coincides with the axis of the top seat 110 and the guide seat 120, ensuring uniform force distribution. When there are multiple buffer springs 130, they are evenly distributed between the top seat 110 and the guide seat 120. If both the top seat 110 and the guide seat 120 are cylindrical structures, the buffer springs 130 can be evenly distributed circumferentially around the axis of the top seat 110 and the guide seat 120, or they can be arranged in a uniform rectangular array between the top seat 110 and the guide seat 120 to ensure uniform force distribution among the buffer springs 130, the top seat 110, and the guide seat 120.

[0041] In designing the vibration-absorbing component 200, the vibration-absorbing component 200 includes vibration-damping rubber 210. The vibration-damping rubber 210 has a first stiffness along the first straight line a. The stiffness of the buffer spring 130 is the same as the first stiffness. The first stiffness is the vertical stiffness of the vibration-damping rubber 210. The shape of the vibration-damping rubber 210 can be a frustum, a cone, or a cylinder, such as... Figure 2As shown, the vibration-damping rubber 210 in this application is designed as a frustum, which includes an upper base 211, a lower base 212, and a generatrix c. The axis of the frustum is located on a second line b, and the first line a and the second line b are collinear. Further, the first line a and the second line b coincide. In this application, the angle between the generatrix c and the lower base 212 is α, 60°≤α≤90°. Within the above range, α can be selected from other angles such as 60°, 65°, 70°, 75°, 80°, 85°, or 90°. Further, the frustum in this application is a through-type trumpet-shaped structure. In the specific design, the upper base 211 and the lower base 212 are connected along the axis of the frustum: a first opening 213 is formed on the upper base 211 and a second opening 214 is formed on the lower base 212. The first opening 213 and the second opening 214 can be triangular, quadrilateral or circular, etc. In this application, the first opening 213 and the second opening 214 are set as circular, and the center of the circle is located on the second straight line b. At the same time, the diameter ratio of the first opening 213 and the second opening 214 is the same as the diameter ratio of the upper base 211 and the lower base 212, so that the wall thickness of the frustum is the same everywhere.

[0042] Along the first straight line a, on the guide seat 120, as mentioned above, the first end is connected to the top seat 110, and the end opposite to the first end is the second end. The second end is inserted into the first opening 213 to realize the connection between the guide seat 120 and the vibration isolation rubber 210. In order to limit the depth of the first end inserted into the first opening 213, this application also provides a first retaining ring 121 on the outer wall of the guide seat 120. The first retaining ring 121 abuts against the upper bottom surface 211 to limit the depth of the guide seat 120 inserted into the first opening 213.

[0043] The first vibration isolation unit also includes a base 400 for connecting the vibration isolation rubber 210 and cooperating with the vibration isolation rubber 210 to absorb vibration. The base 400 includes a second surface B, which abuts against the lower bottom surface 212 of the frustum to provide a support plane for the frustum. In order to prevent the vibration isolation rubber 210 from exceeding its limit displacement and being damaged when subjected to large impacts, this application provides a second retaining ring 410 on the second surface B. In order to limit the displacement of the vibration isolation rubber 210, this application sets the inner diameter of the second retaining ring 410 to be the same as the outer diameter of the lower bottom surface 212, so that the outer side of the lower bottom surface 212 abuts against the inner wall of the second retaining ring 410. At the same time, the second retaining ring 410 does not have to be a continuous ring and can be intermittently set.

[0044] In this application, when setting the guide seat 120, vibration isolation rubber 210 and base 400, they can be vulcanized into one piece according to actual operation requirements.

[0045] To improve the stability of the device during vertical vibration, this application provides a limiting device between the guide seat 120 and the base 400. The limiting device includes a limiting platform 122 and a limiting hole 420. The limiting platform 122 and the limiting hole 420 only need to be separately placed on the guide seat 120 and the base 400, and their specific positions are not limited. In this application, the limiting platform 122 is located at the second end of the guide seat 120, and the limiting hole 420 is opened on the second surface B of the base along the second straight line b. The projection of the limiting hole 420 covers the projection of the limiting platform 122, so that the limiting platform 122 can be inserted into the limiting hole 420 for limiting during movement.

[0046] To mitigate the impact of the limiting platform 122 and the limiting hole 420 during insertion and to provide guidance, this application provides a first rubber layer 421 covering the inner wall of the limiting hole 420 and a second rubber layer 422 covering the second surface B of the base 400. In specific design, a boss can also be provided around the limiting hole 420 on the second surface B, and the second rubber layer 422 can be covered on the surface of the boss. The second rubber layer 422 and the first rubber layer 421 are integrally formed. In actual application, the second rubber layer 422 and the first rubber layer 421 can be vulcanized with the base 400 as a whole.

[0047] To further improve vibration isolation performance, this application also provides a second vibration isolation unit. The second vibration isolation unit uses a particle damper 300 for vibration isolation. The second vibration isolation unit is located on the side of the first surface A near the top seat 110. The second vibration isolation unit includes a particle damper 300. The particle damper 300 can be ring-shaped and is sleeved on the outer periphery of the top seat 110.

[0048] When designing the particle damper 300, since the vibration reduction performance first increases to the optimal value and then decreases with the increase of the filling rate, the particle filling rate range of this application is selected to be 60%-90%. Within this range, the maximum vibration reduction effect can reach 90%. In specific design, particle filling rates of 60%, 65%, 70%, 75%, 80%, 85% and 90% can be preferred.

[0049] When selecting materials for particle design, metals such as iron, copper, and / or tungsten can be used.

[0050] When designing the particle size, since its wide-band vibration reduction characteristics first increase and then decrease as the particle diameter increases, the particle size range of this application is 1mm-5mm. To further achieve the best vibration reduction effect, the particle size can be selected as 2mm-3mm.

[0051] Since coated particles have superior vibration damping performance compared to ordinary particles, in order to further improve the vibration damping performance, this application provides a viscoelastic coating on the outer surface of the particles, with a surface friction factor of 0.1-0.8 and a surface recovery coefficient of 0.5-0.8.

[0052] In a further design, to shield the vibration isolation rubber 210 and prevent it from being contaminated by chemicals, this application provides an oil-proof cap 123 on the first retaining ring 121. Along the first straight line a, the projection of the oil-proof cap 123 covers the outer wall of the frustum and the projection of the second retaining ring 410.

[0053] Example 2:

[0054] Based on the same inventive concept as Embodiment 1, Embodiment 3 of this application provides a vibration isolation system, such as... Figure 3 As shown, it includes:

[0055] Mounting plate 500 and vibration isolation device as disclosed in any of Embodiment 1, in this application, mounting plate 500 is used to connect to and carry vibration source;

[0056] Multiple vibration isolation devices are evenly distributed on the surface of the mounting plate 500. The first surface A is connected to the mounting plate 500, and the base 400 is used to connect to the surface to be fixed.

[0057] To further illustrate the advantages of this application, taking a diesel engine power transmission shaft system as an example, the diesel engine has a rated speed of 1500 rpm (i.e., excitation frequency ω = 25 Hz) and an idle speed of 600 rpm (i.e., excitation frequency ω = 10 Hz). The shaft system operates within the speed range of 600 rpm to 1500 rpm.

[0058] For the vibration source, a diesel engine, with a fundamental frequency of 10Hz to 25Hz, vibration isolation design is required. According to vibration isolation theory, to achieve the vibration isolation objective, the ratio of the excitation frequency to the natural frequency of the isolation system should be greater than [value missing]. Assuming damping is neglected under the same load conditions:

[0059] 1) Configuration Figure 4 plan:

[0060] a) At 600 rpm It does not have a vibration isolation effect;

[0061] b) Vibration isolation coefficient at 1500 rpm ω n For the natural frequency, Figure 4 The natural frequency of the middle scheme is 10Hz, and the vibration isolation efficiency is I = (1-T) / ( ... A ) × 100% ≈ 81%.

[0062] 2) Configure the scheme in this application.

[0063] a) Vibration isolation coefficient at 600 rpm ω n The natural frequency is 6Hz in this application, and the vibration isolation efficiency is I = (1-T) / (6Hz).A ) × 100% ≈ 43%;

[0064] b) Vibration isolation coefficient at 1500 rpm Vibration isolation efficiency I = (1 - T) A ) × 100% ≈ 94%.

[0065] The above analysis shows that, using Figure 4 The proposed solution has no vibration isolation effect at idle speed, but has an vibration isolation effect of about 81% at rated speed. With the present application, the system has a vibration isolation effect throughout the entire speed range, with a vibration isolation effect of about 43% at idle speed and a vibration isolation effect of 94% near rated speed, showing a significant vibration isolation effect.

[0066] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A vibration isolation device, characterized in that: include: The first vibration isolation unit includes a buffer (100), a vibration absorber (200), and a base (400). The buffer (100) is disposed on the vibration absorber (200), and the vibration absorber (200) is disposed on the base (400). The buffer (100) includes a top seat (110), a guide seat (120), and a buffer spring (130). The two ends of the buffer spring (130) are respectively connected to the top seat (110) and the guide seat (120). The axis of the buffer spring (130) is a first straight line (a). The top seat (110) and the guide seat (120) move along the first straight line (a). The guide seat (120) is disposed on the vibration absorber (200), the vibration absorber (200) includes vibration isolation rubber (210), the vibration isolation rubber (210) has a first stiffness on the first straight line (a), the first stiffness is the vertical stiffness of the vibration isolation rubber (210), the stiffness of the buffer spring (130) is the same as the first stiffness, the vibration isolation rubber (210) includes an upper bottom surface (211), a lower bottom surface (212) and a generatrix (c), the included angle between the generatrix (c) of the vibration isolation rubber (210) and the lower bottom surface (212) is α, 60°≤α≤90°, the upper bottom surface (211) abuts against the guide seat (120), and the lower bottom surface (212) is connected to the base (400); The second vibration isolation unit is disposed on the top seat (110). The second vibration isolation unit includes a particle damper (300), and the particle filling rate of the particle damper (300) is in the range of 60%-90%.

2. The vibration isolation device according to claim 1, characterized in that: The vibration isolation rubber (210) is shaped like a frustum, which includes an upper base (211), a lower base (212) and a generatrix (c). The angle between the generatrix (c) and the lower base (212) of the frustum is α, where 60°≤α≤90°. The axis of the frustum is located on a second straight line (b), and the first straight line (a) and the second straight line (b) are collinear. Along the second straight line (b), the upper bottom surface (211) and the lower bottom surface (212) are connected: a first opening (213) is formed on the upper bottom surface (211) and a second opening (214) is formed on the lower bottom surface (212); The outer wall of the guide seat (120) is provided with a first retaining ring (121). Along the first straight line (a), one end of the guide seat (120) is the first end, which is connected to the top seat (110). The other end of the guide seat (120) is the second end, which is inserted into the first opening (213). The first retaining ring (121) abuts against the upper bottom surface (211).

3. The vibration isolation device according to claim 2, characterized in that: The base (400) includes a second surface (B) that abuts against the lower bottom surface (212). A second retaining ring (410) is provided on the second surface (B), and the outer side of the lower bottom surface (212) abuts against the inner wall of the second retaining ring (410).

4. The vibration isolation device according to claim 2, characterized in that: The guide seat (120) is provided with a limiting platform (122) at its second end, and a limiting hole (420) is provided on the base (400). Along the second straight line (b), the projection of the limiting hole (420) covers the projection of the limiting platform (122). The inner wall of the limiting hole (420) is covered with a first rubber layer (421), and the second surface (B) of the base (400) is covered with a second rubber layer (422). The second rubber layer (422) and the first rubber layer (421) are integrally formed.

5. The vibration isolation device according to claim 1, characterized in that: The compression range of the buffer spring (130) is 10mm-20mm.

6. The vibration isolation device according to claim 1, characterized in that: The surface of the top seat (110) used to contact the vibration source is the first surface (A), and the second vibration isolation unit is located on the side of the first surface (A) close to the top seat (110).

7. The vibration isolation device according to claim 6, characterized in that: The particle filler material in the particle damper (300) is iron, copper, and / or tungsten.

8. The vibration isolation device according to claim 6, characterized in that: The outer surface of the particle filler in the particle damper (300) is provided with a viscoelastic coating, the friction factor of the particle filler is 0.1-0.8, and the surface recovery coefficient of the particle filler is 0.5-0.

8.

9. The vibration isolation device according to claim 6, characterized in that: The particle size range of the particle filler in the particle damper (300) is 1mm-5mm.

10. The vibration isolation device according to claim 3, characterized in that: An oil-proof cap (123) is provided on the first retaining ring (121). Along the first straight line (a), the projection of the oil-proof cap (123) covers the outer wall of the frustum and the projection of the second retaining ring (410).

11. The vibration isolation device according to claim 2, characterized in that: The first end of the guide seat (120) is provided with a first mounting groove (124), and a self-lubricating bearing (140) is nested in the inner wall of the first mounting groove (124). The outer wall of the top seat (110) is slidably connected to the self-lubricating bearing (140).

12. The vibration isolation device according to claim 11, characterized in that: The top seat (110) has a second mounting groove (111) at one end facing the guide seat (120). A spring insert (112) is provided at the bottom of the second mounting groove (111). One end of the buffer spring (130) is inserted into the spring insert (112) and abuts against the bottom of the second mounting groove (111). The other end of the buffer spring (130) abuts against the bottom of the first mounting groove (124).

13. A vibration isolation system, characterized in that: It includes a mounting plate (500) and a vibration isolation device as described in any one of claims 1-12, wherein multiple vibration isolation devices are provided; The mounting plate (500) is used to connect to and support the vibration source; Multiple vibration isolation devices are evenly distributed on the surface of the mounting plate (500), the first surface (A) is connected to the mounting plate (500), and the base (400) is used to connect to the surface to be fixed.

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