Multi-layer damping shock insulation device

Abstract

The utility model relates to a multilayer damping shock insulation device, which comprises a storage plate, a bottom plate and a damping body arranged in the middle, the storage plate is provided with a limiting support column, the bottom plate is provided with a circular slot position for placing the damping body, the damping body comprises at least two layers of annular damping rings, and a spacer ring is arranged between two adjacent layers of annular damping rings. The limiting supporting column is inserted into the annular opening of the middle annular damping ring and abuts against the inner wall of the annular damping ring. External force brought by earthquakes is applied to the middle positions of the damping bodies through the limiting supporting columns, and the external force is buffered and weakened layer by layer from inside to outside through the multi-layer damping body structure; and when the force is transmitted to the next annular damping ring, the buffering effect on the force is gradually increased. According to the damping device, the ideal damping effect can be achieved only through the damping body, the types of damping pieces are simplified, the manufacturing cost is reduced, the damping characteristics of multiple positions in the radial direction of the damping body can be efficiently utilized, and the damping effect is greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of seismic isolation devices, and specifically, to a multi-layer damping seismic isolation device. Background Art

[0002] An earthquake is a natural phenomenon that occurs when the earth's crust rapidly releases energy, accompanied by the generation of seismic waves. This natural phenomenon is one of the natural disasters that pose a great threat to humans. When dealing with earthquakes, for the protection of domestic precision data cabinets and precision control cabinets, the main measures taken are to increase the stiffness of the equipment and the connection stiffness between the equipment and the base to meet the seismic standards. Such a method is rigid seismic resistance, which can basically ensure that the equipment will not collapse. However, there is a problem with this method, that is, during an earthquake, due to the amplification effect of ground motion acceleration, the internal precision parts may fall off or be damaged due to vibration.

[0003] Therefore, people abandon rigid seismic resistance and propose a seismic resistance method using high-damping seismic isolation rubber bearings. A high-damping seismic isolation rubber bearing is a new type of seismic isolation and damping rubber bearing, which has good deformation ability, damping performance, sufficient vertical load-bearing capacity and environmental protection performance.

[0004] For example, a high-damping seismic isolation rubber bearing disclosed in the utility model patent publication number CN208123349U includes an upper steel plate, a lower steel plate, and a rubber seat body as a damping body. The upper steel plate and the lower steel plate are respectively connected to the upper and lower surfaces of the rubber seat body, and the damping performance of the rubber is used to achieve the overall shock absorption of the bearing. Since the external force only acts on the surface of the rubber seat body, the utilization rate of the rubber damping characteristics is not high, and shock-absorbing blocks and shock-absorbing air bags need to be added to improve the shock absorption efficiency. This will inevitably increase the complexity of the structure, and the connection firmness and service life of the shock-absorbing blocks and shock-absorbing air bags pose new challenges to the bearing. In addition, this rubber bearing is mainly used for the seismic resistance of structures and needs a relatively large load-bearing environment to play a role, and it is not suitable for non-structural seismic resistance with a relatively small load (such as the seismic resistance of precision data cabinets and art exhibits).

[0005] Therefore, it is necessary to develop a seismic isolation device with a simple structure, low cost, and capable of efficiently utilizing the damping performance of the damping body. Summary of the Utility Model

[0006] In order to solve the problems that the existing seismic isolation bearing has a complex structure and cannot efficiently utilize the damping performance of the damping body to achieve the seismic isolation effect, the utility model provides a multi-layer damping seismic isolation device.

[0007] The technical solution of the utility model is as follows:

[0008] A multi-layer damping isolation device, comprising a placing plate, a bottom plate and a damping body disposed in the middle. The placing plate is provided with limit support columns, and the bottom plate is provided with a circular groove for placing the damping body. The damping body includes at least two layers of annular damping rings, and a spacer ring is disposed between adjacent two layers of the annular damping rings. The annular damping rings and the spacer rings are in close contact with each other. The limit support columns are inserted into the ring openings of the annular damping rings in the exact middle and are in contact with the inner ring walls of the annular damping rings.

[0009] By adopting the above technical solution, when the placing plate and the bottom plate are misaligned with each other, an external force is generated between the limit support columns and the damping body and is transmitted from the middle position to the surroundings. The inner ring wall of the annular damping ring in the exact middle is squeezed and deformed, so that the force is buffered and weakened for the first time. The remaining force will push the inner annular damping ring to move, causing the adjacent spacer ring to squeeze the second inner annular damping ring. At this time, the inner ring wall of the second inner annular damping ring is squeezed and deformed, and the force is buffered and weakened for the second time. And because the squeezing area increases, the force obtains a greater buffering effect. By analogy, the remaining external force is transmitted layer by layer outward through the spacer rings. Every time the force is transmitted to the next layer of annular damping ring, the squeezing area gradually increases and the buffering effect is gradually amplified. The external force finally dissipates in the multi-layer damping body; the influence of the external force on the placing plate is very small and even cannot be transmitted to the placing plate.

[0010] Further, the placing plate is provided with four uniformly distributed horn-shaped screw holes, and four screws pass through the placing plate from top to bottom and are inserted into the limit support columns.

[0011] According to the present utility model of the above solution, an anti-overturning limit ring is provided above the groove wall of the circular groove, and the anti-overturning limit ring is located between the placing plate and the damping body. The limit support columns pass through the ring opening of the anti-overturning limit ring.

[0012] Further, the upper surface of the anti-overturning limit ring is provided with a plurality of first Teflon support pads, and the first Teflon support pads are used to support the placing plate and its upper load and reduce the friction between the placing plate and the anti-overturning limit ring.

[0013] Furthermore, a circular oil groove is provided on the upper surface of the first Teflon support pad, and the circular oil groove is used for adding lubricating oil.

[0014] Furthermore, a horn-shaped screw hole is provided in the middle of the first Teflon support pad, and the first Teflon support pad is fixed on the anti-overturning limit ring by screws.

[0015] According to the present utility model of the above solution, a support ring is provided on the outer periphery of the limit support column, and the support ring is located in the gap between the anti-overturning limit ring and the damping body.

[0016] Further, the anti-overturning limit ring and the support ring are vertically offset, and the outer diameter of the support ring is greater than the inner diameter of the anti-overturning limit ring.

[0017] In the utility model according to the above solution, a second Teflon support pad is provided on the lower surface of the limit support column. The second Teflon support pad is used to assist in supporting the storage board and its upper load, and reduce the friction between the bottom plate and the limit support column.

[0018] Further, an inner ring oil groove and an outer ring oil groove are provided on the lower surface of the second Teflon support pad. Two horn-shaped screw holes are also provided between the inner ring oil groove and the outer ring oil groove. Two screws pass through the second Teflon support pad from bottom to top and are inserted into the limit support column.

[0019] Further, the outer diameter of the second Teflon support pad is equal to the outer diameter of the limit support column.

[0020] In the utility model according to the above solution, the damping body is a super-elastic body with a porous structure.

[0021] Preferably, the damping body is foamed silica gel or ethylene propylene diene monomer rubber.

[0022] In the utility model according to the above solution, its beneficial effects are as follows:

[0023] In the utility model, by providing the limit support column, the external force brought by the earthquake is applied to the middle position of the damping body. Then, by using the multi-layer damping body structure and the spacer rings of each layer, the external force is buffered and weakened layer by layer from the inside to the outside; and every time it is transmitted to the next ring-shaped damping ring, the extrusion area of the damping body gradually increases, and the buffering effect brought by the damping body is gradually amplified; it can be seen that the utility model can achieve an ideal damping effect only through the damping body, simplifies the types of damping components, reduces the manufacturing cost, and can efficiently utilize the damping characteristics of multiple positions in the radial direction of the damping body, greatly increasing the damping effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a structural schematic diagram of the utility model;

[0025] Figure 2 is a sectional view of the utility model;

[0026] Figure 3 is an exploded view of the structure of the utility model;

[0027] Figure 4 is a structural schematic diagram of the storage board;

[0028] Figure 5 is a structural schematic diagram of the second Teflon support pad;

[0029] Figure 6 It is a schematic structural diagram of the bottom plate;

[0030] Figure 7 It is a schematic structural diagram of the first Teflon support pad;

[0031] Figure 8 It is a schematic diagram of placing two layers of structural damping bodies in the circular groove.

[0032] In the figure,

[0033] 1. Damping body; 11. Annular damping ring; 12. Spacer ring;

[0034] 2. Placing board; 21. Limit support column; 22. Support ring;

[0035] 3. Bottom plate; 31. Circular groove;

[0036] 4. Anti-overturning limit ring;

[0037] 5. First Teflon support pad; 51. Circular oil groove;

[0038] 6. Second Teflon support pad; 61. Inner ring oil groove; 62. Outer ring oil groove. Detailed implementation manners

[0039] In order to better understand the purpose, technical solution and technical effect of the present utility model, the present utility model will be further explained and described below with reference to the drawings and embodiments. It should be noted that: similar reference numerals and letters denote similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, it is declared that the embodiments described below are only used to explain the present utility model and are not used to limit the present utility model.

[0040] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or there may also be a middle element. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be a middle element at the same time.

[0041] The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of this application is usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art, or the orientation or positional relationship in which the product of this application is usually placed during use. It is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to this application.

[0042] The terms "first" and "second" are only used for convenience of description and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of technical features. The meaning of "a plurality" is two or more unless specifically defined otherwise.

[0043] Example 1

[0044] As Figures 1 to 3 shown, a multi-layer damping and seismic isolation device includes a placement plate 2, a bottom plate 3, and a damping body 1 disposed in the middle. When the multi-layer damping and seismic isolation device is in use, a precision data cabinet, a control cabinet, or cultural relics such as an antique vase is fixed above the placement plate 2, and the bottom plate 3 is fixed to the ground or a tabletop, thereby protecting the above-mentioned items and avoiding damage caused by an earthquake.

[0045] As Figure 4 shown, the placement plate 2 is provided with limiting support columns 21. The connection and fixing method between the limiting support columns 21 and the placement plate 2 can be screw fixation. Specifically, the placement plate 2 is provided with three, four or more evenly distributed trumpet-shaped screw holes, and screws corresponding to the quantity pass through the placement plate 2 from top to bottom and are inserted into the limiting support columns 21. At this time, the limiting support columns 21 are located on the lower surface of the placement plate 2, realizing the stable connection between the limiting support columns 21 and the placement plate 2.

[0046] As Figure 6 shown, the bottom plate 3 is provided with a circular slot 31 for placing the damping body 1. Specifically, the circular slot 31 is formed by an annular partition, and the annular partition is integrally formed with or fixedly connected to the bottom plate 3. The size of the circular slot 31 is adapted to the size of the damping body 1 to ensure that the damping body 1 does not shake after being placed in the circular slot 31.

[0047] The damping body 1 is a hyperelastic body with a porous structure, preferably foamed silica gel or ethylene propylene diene monomer rubber, which can provide better shock absorption effect while maintaining the light weight of the structure. The damping body 1 includes at least two layers of annular damping rings 11, and a spacer ring 12 is provided between adjacent two layers of annular damping rings 11. The annular damping rings 11 and the spacer ring 12 are in close contact; the limiting support column 21 is inserted into the ring opening of the middle annular damping ring 11 and abuts against the inner ring wall of the annular damping ring 11.

[0048] As Figure 8As shown in the figure, taking the damping body 1 with two layers of annular damping rings as an example, the damping body 1 is formed by sleeving an annular damping ring A and an annular damping ring B inside and outside, and a spacer ring is provided between the annular damping ring A and the annular damping ring B. The earthquake-induced shaking brings external forces to the items and the shock-absorbing device at their bottoms. The external forces are transmitted to the middle position of the annular damping ring A through the limit support columns of the placement board, and the inner ring wall of the annular damping ring A is squeezed, resulting in deformation in the squeezed area. The external forces are first buffered in the annular damping ring A and partially weakened; the remaining external forces will push the annular damping ring A and the spacer ring to move and continue to squeeze the annular damping ring B outward. The squeezed area of the annular damping ring B deforms, and the external forces are further weakened by the second buffering at the annular damping ring B; and due to the increase in the squeezed area, the external forces obtain a greater buffering effect.

[0049] On the contrary, for the traditional damping body 1 with a monolithic structure, when the middle limit support column squeezes the damping body 1 outward, only the area adjacent to the squeezing surface is prone to deformation, and this area becomes very compact. It is difficult for the force to continue to be transmitted radially in the damping body 1 to obtain buffering, so the remaining force directly pushes the monolithic damping body 1 to squeeze against the wall of the circular groove, resulting in the external force being transmitted to the placement board. It can be seen that the damping characteristics of the monolithic damping body 1 cannot be well utilized, while the multi-layer structure damping body 1 of the present invention can efficiently utilize the damping characteristics at multiple positions in the radial direction of the damping body 1, greatly increasing the shock-absorbing effect.

[0050] In this embodiment, an anti-overturning limit ring 4 is provided above the wall of the circular groove 31. Several screws can be used to pass through the anti-overturning limit ring 4 from top to bottom to fix the anti-overturning limit ring 4 on the groove wall. The installed anti-overturning limit ring 4 is located between the placement board 2 and the damping body 1. After the limit support column 21 passes through the ring opening of the anti-overturning limit ring 4, it is inserted into the middle of the multi-layer damping body 1. The anti-overturning limit ring 4 can expand the support position for the placement board 2, and can prevent the protected items and the placement board 2 from tipping over when the earthquake shaking effect suddenly occurs or is relatively strong.

[0051] As Figure 3 and Figure 4 shown, a support ring 22 is provided on the outer periphery of the limit support column 21. The support ring 22 is located in the gap between the anti-overturning limit ring 4 and the damping body 1, and the support ring 22 serves as the top cover of the circular groove 31 to better limit the damping body.

[0052] The damping body 1 increases the stability of the damping body 1 placed on the bottom plate 3, thereby strengthening the stability of the overall structure of the device. The support ring 22 and the anti-overturning limit ring 4 are staggered up and down to prevent the external forces during the shaking process from being transmitted to the bottom plate 3 through the anti-overturning limit ring 4, and the outer diameter of the support ring 22 is greater than the inner diameter of the anti-overturning limit ring 4.

[0053] Embodiment 2

[0054] As Figures 4 to 7 shown, a multi-layer damping isolation device includes a placement plate 2, a bottom plate 3, and a damping body 1 disposed in the middle. The bottom plate 3 is provided with a circular slot 31 for placing the damping body 1. An anti-overturning limit ring 4 is provided above the slot wall of the circular slot 31. The rest of the structure is the same as that of the first embodiment, except that: several first Teflon support pads 5 are provided on the upper surface of the anti-overturning limit ring 4. A horn-shaped screw hole is provided in the middle of the first Teflon support pad 5. The first Teflon support pad 5 is fixed to the anti-overturning limit ring 4 by screws. Since Teflon has a relatively low coefficient of friction, the first Teflon support pad 5 can support the placement plate and its upper load, and reduce the friction between the placement plate 2 and the anti-overturning limit ring 4.

[0055] To further reduce the friction between the placement plate 2 and the anti-overturning limit ring 4, a circular oil groove 51 is provided on the upper surface of the first Teflon support pad 5. The circular oil groove 51 is used to add lubricating oil to increase the lubricity of the contact surface between the first Teflon support pad 5 and the placement plate 2 and reduce friction.

[0056] To reduce the friction between the limit support column 21 and the upper surface of the bottom plate 3, a second Teflon support pad 6 is provided on the lower surface of the limit support column 21. The limit support column 21 contacts the upper surface of the bottom plate 3 through the second Teflon support pad 6, and can also play a role in assisting to support the placement plate and its upper load. Inner ring oil grooves 61 and outer ring oil grooves 62 can be provided on the lower surface of the second Teflon support pad 6. The inner ring oil grooves 61 and the outer ring oil grooves 62 create a groove inner space between the second Teflon support pad 6 and the bottom plate 3, which can increase the amount of lubricating oil between the second Teflon support pad 6 and the bottom plate 3.

[0057] Two horn-shaped screw holes are also provided between the inner ring oil groove 61 and the outer ring oil groove 62. Two screws pass through the second Teflon support pad 6 from bottom to top and are inserted into the limit support column 21 to ensure the stable connection between the second Teflon support pad 6 and the limit support column 21, and the second Teflon support pad 6 will not fall off. Preferably, the outer diameter of the second Teflon support pad 6 is equal to the outer diameter of the limit support column 21 to ensure the coordination and stability of the structure at this place.

[0058] The technical features of the above embodiments can be combined arbitrarily. For the sake of concise description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0059] The above embodiments only illustrate several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. A multi-layer damping and seismic isolation device, comprising a storage plate, a bottom plate and a damping body arranged in the middle, characterized in that: The storage plate is provided with a limiting support column, and the bottom plate is provided with a circular groove for placing the damping body, the damping body includes at least two layers of annular damping rings, and a spacer ring is provided between two adjacent layers of the annular damping rings, and the annular damping rings are in close contact with the spacer rings; the limiting support column is inserted into the ring opening of the annular damping ring in the middle and abuts against the inner ring wall of the annular damping ring.

2. A multi-layer damping and seismic isolation device according to claim 1, characterized in that: An anti-overturning limiting ring is provided above the groove wall of the circular groove, and the anti-overturning limiting ring is located between the storage plate and the damping body, and the limiting support column passes through the ring opening of the anti-overturning limiting ring.

3. A multi-layer damping and seismic isolation device according to claim 2, characterized in that: A plurality of first Teflon support pads are provided on the upper surface of the anti-overturning limit ring, and the first Teflon support pads are used to support the storage plate and the upper load thereof and reduce the friction between the storage plate and the anti-overturning limit ring.

4. A multi-layer damping and seismic isolation device according to claim 3, characterized in that: A circular oil groove is provided on the upper surface of the first Teflon support pad, and the circular oil groove is used for adding lubricating oil.

5. A multi-layer damping and seismic isolation device according to claim 2, characterized in that: A support ring is provided on the outer periphery of the position-limiting support column, and the support ring is located in the gap between the anti-overturning position-limiting ring and the damping body.

6. A multi-layer damping and seismic isolation device according to claim 5, characterized in that: The anti-overturning limiting ring and the supporting ring are staggered up and down, and the outer diameter of the supporting ring is larger than the inner diameter of the anti-overturning limiting ring.

7. A multi-layer damping and seismic isolation device according to claim 2, characterized in that: A second Teflon support pad is provided on the lower surface of the position-limiting support column, and the second Teflon support pad is used to assist in supporting the storage plate and the upper load thereof and to reduce the friction between the bottom plate and the position-limiting support column.

8. A multi-layer damping and seismic isolation device according to claim 7, characterized in that: The lower surface of the second Teflon support pad is provided with an inner ring oil groove and an outer ring oil groove, and two trumpet-shaped screw holes are also provided between the inner ring oil groove and the outer ring oil groove. Two screws pass through the second Teflon support pad from bottom to top and are inserted into the limiting support column.

9. The multi-layer damping and seismic isolation device according to claim 7, characterized in that: The outer diameter of the second Teflon support pad is equal to the outer diameter of the limiting support column.

10. A multi-layer damping and seismic isolation device according to any one of claims 1 to 9, characterized in that: The damping body is a superelastic body with a porous structure.

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