A composite type damper

Abstract

The utility model discloses a composite type damping shock absorber relates to structure vibration control technical field, and this shock absorber has the support of the elastic body material layer and the rigid material layer alternative superposition structure and the damper body made of high polymer damping material, and with the support as the framework, the damper body is sealed and is arranged in the support and forms an integral whole. The shock absorber not only realizes the shearing damper body, and plays the good efficiency of damping energy dissipation effect, still overcomes the technical problem of the present art that the high polymer damping material creep is big and influences the structural stability and is easy to age in the air environment, and the durability is insufficient.

Description

Technical Field

[0001] This utility model relates to the field of structural vibration control technology, and in particular to a composite damping vibration absorber. Background Technology

[0002] Structural vibration control technology is an advanced technology that uses vibration dampers to block, absorb, or dissipate input vibration energy within a structure, thereby reducing the structure's dynamic response and ensuring its safety and usability. Vibration dampers, as the core of this technology, have always been a hot topic in structural vibration control technology innovation and research.

[0003] Asphalt and other polymeric damping materials, as materials with excellent damping properties, are expected to be used in the manufacture of vibration dampers or components with superior energy dissipation and vibration reduction performance. However, due to the inherent properties of the materials, existing polymeric damping material vibration damper technologies generally suffer from the following problems: 1. Vibration dampers experience significant creep under long-term loads, which can affect their structural stability; 2. The polymer damping material in the shock absorber ages quickly in the air and its durability does not meet the requirements; 3. Existing vibration dampers have the limitation of only being able to dampen vibrations in a single direction or in a single plane of action, and they do not have the ability to dampen vibrations simultaneously in both horizontal and vertical directions. In practice, this often results in the inability to dampen vibrations in multiple directions, or the need to install vibration dampers separately in each vibration control direction, which greatly increases the number of vibration dampers and causes a significant increase in vibration reduction costs. Utility Model Content

[0004] The purpose of this invention is to provide a composite damping vibration damper, which not only realizes the shear damping body and plays a good role in damping and energy dissipation, but also overcomes the existing technical problems of large creep of polymer damping materials affecting structural stability and easy aging and insufficient durability in air environment.

[0005] The technical solution of this utility model to solve the above-mentioned technical problems is: a composite damping vibration damper, comprising a flat support body and a damping body that are sheared along a direction perpendicular to their thickness. The support body includes a damping hole, a shear layer, and a rigid bundle layer. The shear layer and the rigid bundle layer are alternately stacked, and their contact interface is tightly connected. The damping hole is arranged inside the support body. The shear layer is an elastic material layer, the rigid bundle layer is a rigid material layer, and the damping body is filled in the damping hole. The damping body is made of a polymer damping material with good damping performance that is different from the material of the shear layer.

[0006] As a further improvement of this utility model, the damping body is made of modified asphalt.

[0007] As a further improvement of this utility model, the thickness of both the shear layer and the rigid bundle layer is between 1mm and 50mm.

[0008] As a further improvement of this utility model, the damping hole extends through the entire support body along the thickness direction of the support body.

[0009] As a further improvement of this utility model, the support body is also covered with a protective layer.

[0010] As a further improvement of this utility model, the ratio of the total projected area of ​​the damping holes along the thickness direction of the support body to the planar cross-sectional area of ​​the support body is not less than 10%.

[0011] As a further improvement of this utility model, the damping holes are dispersedly distributed within the shear layer.

[0012] As a further improvement of this utility model, the damping holes of each layer are arranged to coincide along the projection perpendicular to the shear direction of the support body.

[0013] As a further improvement of this utility model, the damping holes of each layer are offset along the projection perpendicular to the shear direction of the support body.

[0014] Beneficial effects Compared with the prior art, the advantages of the composite damping vibration absorber of this utility model are as follows: This composite damping vibration isolator integrates a sealed damping body within a support structure. Under dynamic loads, the damping body undergoes shear deformation, dissipating input kinetic energy and providing excellent damping and energy dissipation. Simultaneously, alternating layers of elastic and rigid materials are tightly connected to form the support structure, which provides a load-bearing framework and addresses the issue of excessive creep affecting structural stability. Furthermore, by incorporating damping holes within the support structure and filling and sealing them with polymer damping material, the high damping performance of the polymer damping material is utilized while isolating it from the external environment. This solves the problem of polymer damping materials being prone to aging and lacking durability in air-conditioned environments.

[0015] This composite damping vibration isolator addresses the shortcomings of existing vibration isolator technologies in simultaneously achieving vibration reduction effects in both the shear direction and perpendicular to the shear direction through the rational design of the damping hole area ratio, arrangement position, and damping body material, and can significantly reduce the cost of vibration isolators.

[0016] The present invention will become clearer from the following description and in conjunction with the accompanying drawings, which are used to explain the embodiments of the present invention. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the support body in Example 1; Figure 2 This is one of the usage state diagrams in Example 1; Figure 3 This is the second usage state diagram in Example 1; Figure 4 This is a cross-sectional view of the support body in Example 2; Figure 5 This is one of the usage state diagrams in Example 2; Figure 6 This is the second usage state diagram in Example 2; Figure 7 This is a cross-sectional view of the support body in Example 3; Figure 8 This is a usage state diagram from Example 3.

[0019] Wherein: 1-connecting plate; 2-rigid bundle layer; 3-shear layer; 4-damping body; 5-protective layer. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; of course, they can also refer to a mechanical connection or an electrical connection; furthermore, they can refer to a direct connection, an indirect connection through an intermediate medium, or a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Embodiments of the present invention will now be described with reference to the accompanying drawings.

[0023] Example 1 The specific embodiments of this utility model are as follows: Figure 1 As shown, a composite damping vibration damper includes a flat support body and a damping body 4 capable of shear deformation along a direction perpendicular to its thickness. Damping holes are arranged inside the support body. The support body specifically comprises damping holes, a shear layer 3, and a rigid layer 2. The shear layer 3 and the rigid layer 2 are alternately stacked, and their contact interfaces are tightly connected. In this embodiment, the thickness of both the shear layer 3 and the rigid layer 2 is between 1 mm and 50 mm.

[0024] The shear layer 3 is an elastomer material layer, and the rigid bundle layer 2 is a rigid material layer. The damping body 4 fills the damping holes and is made of a high-molecular-weight damping material with good damping performance that differs from the material of the shear layer 3. Specifically: the shear layer 3 is made of natural rubber, polyurethane, or other high-molecular-weight materials with low creep; the rigid bundle layer 2 is made of steel plate, carbon fiber cloth, or other rigid material layers with sufficient tensile and shear strength; the damping body 4 is made of modified asphalt, high-damping rubber, viscoelastic materials, or other high-molecular-weight damping materials. When the damping body 4 is made of modified asphalt, the material cost can be significantly reduced.

[0025] In this embodiment, the damping holes penetrate the entire support body along its thickness direction. A protective layer 5 also covers the support body. The ratio of the total projected area of ​​the damping holes along the thickness direction to the cross-sectional area of ​​the support body is not less than 10%.

[0026] This composite damping vibration isolator integrates a damping body 4, which is sealed and integrated within the support body. Under dynamic loads, the damping body 4 undergoes shear deformation, dissipating the input kinetic energy and achieving excellent damping and energy dissipation. Simultaneously, alternating layers of elastic and rigid materials are tightly connected to form the support body, providing a load-bearing skeletal support and addressing the issue of excessive creep affecting structural stability. Furthermore, by incorporating damping holes within the support body and filling and sealing them with polymer damping material, the high damping performance of the polymer damping material is utilized while simultaneously isolating it from the external environment. This solves the problem of polymer damping materials being prone to aging and lacking durability in air-conditioned environments.

[0027] When using this embodiment, as follows: Figure 2 As shown, in order to install the vibration damper as a support or damper to bear a certain vertical load in the vibration control target structure, horizontally arranged connecting plates 1 can be installed on both the top and bottom surfaces of the support. Connecting bolts are installed on the edges of the connecting plates 1. By placing the vibration damper of this structure horizontally and fixing it to the target structure through the connecting plates 1 located at the upper and lower parts, the installation and fixation of the composite damping vibration damper is achieved.

[0028] In addition, such as Figure 3 As shown, to install the support body as a damper that does not bear vertical loads into the vibration control target structure, a first mounting plate can be selected, and support bodies can be fixed on both sides of the first mounting plate. The two support bodies are arranged opposite each other, and a second mounting plate is installed on the opposite sides of both support bodies. Connecting plates 1 are connected to the opposite sides of the first mounting plate and the second mounting plate, respectively. By placing the vibration damper of this structure vertically and fixing it to the target structure through the connecting plates 1 located at the upper and lower parts, the installation and fixation of the composite damping vibration damper is achieved.

[0029] Example 2 like Figure 4 As shown, the difference between this embodiment and embodiment 1 is that the damping holes are distributed in the shear layer 3, and the damping holes in each layer are arranged to overlap along the projection perpendicular to the shear direction of the support.

[0030] When using this embodiment, as follows: Figure 5 As shown, in order to install the vibration damper as a support or damper to bear a certain vertical load in the vibration control target structure, horizontally arranged connecting plates 1 can be installed on both the top and bottom surfaces of the support. Connecting bolts are installed on the edges of the connecting plates 1. By placing the vibration damper of this structure horizontally and fixing it to the target structure through the connecting plates 1 located at the upper and lower parts, the installation and fixation of the composite damping vibration damper is achieved.

[0031] In addition, such as Figure 6 As shown, to install the vibration damper as a damper that does not bear vertical loads into the vibration control structure, a first mounting plate can be selected, and supports can be fixed on both sides of the first mounting plate. The two supports are arranged opposite each other, and a second mounting plate is installed on the opposite sides of both supports. Connecting plates 1 are connected to the opposite sides of the first and second mounting plates, respectively. By placing the vibration damper of this structure vertically and fixing it to the target structure through the connecting plates 1 located at the upper and lower parts, the installation and fixation of the composite damping vibration damper is achieved.

[0032] Example 3 like Figure 7 As shown, the difference between this embodiment and embodiments 1 and 2 is that the damping holes are distributed within the shear layer 3, and the damping holes in each layer are staggered along the projection perpendicular to the shear direction of the support. In this embodiment, all the damping holes are annular.

[0033] When using this embodiment, as follows: Figure 8As shown, the support body is installed as a pedestal into the vibration control target structure. Horizontally mounted connecting plates 1 can be installed on both the top and bottom surfaces of the support body. Connecting bolts are installed on the edges of the connecting plates 1. By placing the vibration damper horizontally and fixing it to the target structure via the connecting plates 1 located at the upper and lower parts, the composite damping vibration damper is installed and fixed.

[0034] In this embodiment, through the rational design of the damping hole area ratio, arrangement position, and damping material, not only can it achieve a good vibration reduction effect in the shear direction, similar to the previous embodiment, but also the modified asphalt and other polymer damping materials have good viscosity when subjected to compression, which can also play a good role in attenuation and blocking of vertical vibration wave transmission with the vibration direction and transmission direction in the same direction.

[0035] However, due to the creep characteristics of polymer damping materials, indiscriminately using large quantities of this material in each shear layer may lead to load-bearing stability issues when the vibration damper is used as a support. Therefore, in this embodiment, by arranging a certain area of ​​polymer material in each of the different shear layers 3, it is ensured that each shear layer 3 has sufficient load-bearing surface, guaranteeing the skeleton function of the support and thus ensuring the stable load-bearing performance of the vibration damper when used as a support. At the same time, by staggering the arrangement of damping holes, the modified asphalt and other polymer damping materials in the damping holes cover the transmission section of the vertical vibration wave to the maximum extent, thereby significantly attenuating and blocking the vertical vibration wave.

[0036] In addition, in this embodiment, thanks to the simultaneous achievement of horizontal and vertical vibration reduction performance, the shortcomings of having to install dampers in different directions when performing multi-directional vibration reduction are avoided, achieving integrated multi-directional vibration reduction, thereby greatly reducing the number of vibration dampers and the corresponding installation work, and significantly reducing vibration reduction costs.

[0037] The present invention has been described above in conjunction with preferred embodiments, but the present invention is not limited to the embodiments disclosed above, but should cover various modifications and equivalent combinations made in accordance with the essence of the present invention.

Claims

1. A composite damping vibration damper, comprising a flat support body and a damping body (4) that are sheared along a direction perpendicular to their thickness, characterized in that, The support body includes a damping hole, a shear layer (3) and a rigid bundle layer (2). The shear layer (3) and the rigid bundle layer (2) are stacked alternately, and their contact interfaces are tightly connected. The damping hole is arranged inside the support body. The shear layer (3) is an elastic material layer, the rigid bundle layer (2) is a rigid material layer, and the damping body (4) is filled in the damping hole. The damping body (4) is made of a polymer damping material with good damping performance and different from the material of the shear layer (3).

2. The composite damping vibration damper according to claim 1, characterized in that, The damping body (4) is made of modified asphalt.

3. The composite damping vibration damper according to claim 1, characterized in that, The thickness of both the shear layer (3) and the rigid bundle layer (2) is between 1 mm and 50 mm.

4. The composite damping vibration damper according to claim 1, characterized in that, The damping hole extends through the entire support body along the thickness direction.

5. The composite damping vibration damper according to claim 4, characterized in that, The support body is also covered with a protective layer (5).

6. The composite damping vibration damper according to claim 4, characterized in that, The ratio of the total projected area of ​​the damping holes along the thickness direction of the support to the cross-sectional area of ​​the support is not less than 10%.

7. The composite damping vibration damper according to claim 1, characterized in that, The damping holes are distributed within the shear layer (3).

8. The composite damping vibration damper according to claim 7, characterized in that, The damping holes in each layer are arranged so that their projections coincide along the direction perpendicular to the shear direction of the support.

9. The composite damping vibration damper according to claim 7, characterized in that, The damping holes in each layer are offset along the projection perpendicular to the shear direction of the support.

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