Fan-shaped metal rubber viscoelastic damper

Abstract

The fan-shaped metal rubber viscoelastic damper comprises a composite elastic body and connecting plates, the composite elastic body is composed of a restraining steel plate, a shearing steel plate, a metal rubber viscoelastic layer, a columnar packaging metal rubber core, a circular cover plate and an arc-shaped composite elastic body cover plate, and the restraining steel plate and the shearing steel plate are welded between the two connecting plates. A metal rubber viscoelastic layer is arranged between the restraining steel plate and the shearing steel plate, the upper sides and the lower sides of the restraining steel plate, the shearing steel plate and the metal rubber viscoelastic layer are covered with arc-shaped composite elastomer cover plates, and the columnar packaging metal rubber core penetrates through the restraining steel plate, the shearing steel plate and the metal rubber viscoelastic layer. The fan-shaped metal rubber viscoelastic damper not only has the characteristics of high elasticity and large damping shock absorption of rubber, but also has the advantages of oil stain resistance, large applicable temperature range and the like of metal, the service life of the damper can be prolonged while the energy dissipation and shock absorption effects are ensured, and the fan-shaped metal rubber viscoelastic damper can be widely applied to energy dissipation and shock absorption of building structures in various extreme environments.

Description

Technical Field

[0001] The utility model relates to the technical field of building structure shock absorption, and more specifically to a fan-shaped metal rubber viscoelastic damper. Background Art

[0002] Energy dissipation and shock reduction technology can prevent buildings from being damaged or collapsed in sudden earthquakes that exceed the design intensity. It not only protects the building structure itself, but also protects the equipment and personnel safety inside the building. It is a proactive earthquake resistance measure and an important development direction in current earthquake resistance measures.

[0003] The existing fan-shaped lead rubber viscoelastic damper fully utilizes the advantages of small shear and extrusion yield displacement of the lead core under small deformation, large ultimate restoring force, and strong energy dissipation capacity of rubber materials. It performs very well in earthquake response control. However, due to the temperature difference between winter and summer in some parts of northwest my country, which can reach up to 50°C, over-cold and over-heated temperatures will shorten the service life of the rubber and weaken its energy dissipation capacity. In addition, the high air humidity in coastal cities aggravates the aging of the rubber and shortens the service life of the fan-shaped lead rubber viscoelastic damper. Utility Model Content

[0004] The utility model aims to provide a fan-shaped metal rubber viscoelastic damper to solve the problems of the existing fan-shaped lead rubber viscoelastic damper, such as the narrow applicable temperature range of the rubber material, poor corrosion resistance, easy aging loss, and lead pollution in the lead core.

[0005] In order to achieve the above-mentioned purpose, the technical solution provided by the utility model is:

[0006] A fan-shaped metal rubber viscoelastic damper comprises a composite elastomer and a connecting plate, wherein the composite elastomer is composed of a constraint steel plate, a shear steel plate, a metal rubber viscoelastic layer, a columnar packaged metal rubber core, a circular cover plate and an arcuate composite elastomer cover plate, a constraint steel plate and a shear steel plate are welded between two connecting plates, a metal rubber viscoelastic layer is arranged between the constraint steel plate and the shear steel plate, the upper and lower sides of the constraint steel plate, the shear steel plate and the metal rubber viscoelastic layer are covered by an arcuate composite elastomer cover plate, the columnar packaged metal rubber core passes through the constraint steel plate, the shear steel plate and the metal rubber viscoelastic layer, and the two end faces of the columnar packaged metal rubber core are covered by a circular cover plate.

[0007] Furthermore, the restraining steel plate has two pieces, and the metal rubber viscoelastic layer is overlapped and fixedly connected with the restraining steel plate and the shearing steel plate.

[0008] Furthermore, the constraint steel plate, shear steel plate and metal rubber viscoelastic layer are all fan-shaped and share a common center, and are all provided with concentric holes for passing through the columnar packaged metal rubber core.

[0009] Furthermore, the center angle of the constraint steel plate and the shear steel plate is α°, the center angle of the metal rubber viscoelastic layer is (2α-90)°, the upper end of the metal rubber viscoelastic layer is aligned with the constraint steel plate, and the lower end of the metal rubber viscoelastic layer is aligned with the shear steel plate.

[0010] Furthermore, the number of the columnar packaged metal rubber cores is determined by the size of the metal rubber viscoelastic layer.

[0011] Furthermore, the angle between the two connecting plates after installation is 90°, and bolt holes are distributed on the connecting plates.

[0012] Compared with the prior art, the technical solution provided by the utility model has the following beneficial effects:

[0013] The fan-shaped metal rubber viscoelastic damper in the utility model dissipates the energy brought by the earthquake through the friction between the micro-element spring contact surface inside the columnar packaged metal rubber core and the metal rubber viscoelastic layer, as well as the shear slip and irreversible twisting of the metal wire, when the earthquake causes the two connecting plates installed at the beam-column node to rotate relative to each other, thereby achieving the purpose of shock absorption of the building structure; the metal rubber material used has the advantages of fatigue aging resistance, high and low temperature resistance, and corrosion resistance, and can also have excellent shock absorption and energy dissipation performance in coastal areas and areas with large temperature differences between winter and summer. In addition, the metal rubber damper in the utility model can be installed by bolts and connecting plates, and is also easy to install, has low construction costs, and is small in size. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional stereogram of a specific embodiment 1 of the fan-shaped metal rubber viscoelastic damper of the utility model;

[0015] Figure 2 It is a structural diagram of a specific embodiment 1 of the fan-shaped metal rubber viscoelastic damper of the utility model;

[0016] Figure 3 It is a front view of a specific embodiment 1 of the fan-shaped metal rubber viscoelastic damper of the utility model;

[0017] Figure 4 It is a top view of a specific embodiment 1 of the fan-shaped metal rubber viscoelastic damper of the utility model;

[0018] Figure 5 for Figure 1 sectional view of

[0019] Figure 6 It is a three-dimensional stereogram of specific embodiment 2 of the fan-shaped metal rubber viscoelastic damper of the utility model.

[0020] In the figure: 1. connecting plate; 2. restraining steel plate; 3. shearing steel plate; 4. metal rubber viscoelastic layer; 5. columnar packaged metal rubber core; 6. circular cover plate; 7. arc-shaped composite elastomer cover plate. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] In order to further understand the content of the utility model, the utility model is described in detail in conjunction with the accompanying drawings.

[0023] Example 1

[0024] The fan-shaped damper using three columnar metal rubber cores 5 described in this embodiment is as follows: Figure 1-Figure 5 As shown, a fan-shaped metal rubber viscoelastic damper comprises a connecting plate 1 and a composite elastic body of a stacked structure, wherein the composite elastic body is composed of a constraint steel plate 2, a shear steel plate 3, a metal rubber viscoelastic layer 4, a columnar packaged metal rubber core 5, a circular cover plate 6 and an arc-shaped composite elastic body cover plate 7, the constraint steel plate 2 and the shear steel plate 3 are welded between the two connecting plates 1, the metal rubber viscoelastic layer 4 is arranged between the constraint steel plate 2 and the shear steel plate 3, the constraint steel plate 2 has two pieces, the metal rubber viscoelastic layer 4 overlaps and is fixedly connected with the constraint steel plate 2 and the shear steel plate 3, the constraint steel plate 2 and the shear steel plate 3 are welded between the two connecting plates 1, the metal rubber viscoelastic layer 4 is arranged between the constraint steel plate 2 and the shear steel plate 3, the constraint steel plate 2 has two pieces, the metal rubber viscoelastic layer 4 overlaps and is fixedly connected with the constraint steel plate 2 and the shear steel plate 3, the constraint steel plate 2 and the shear steel plate 3 are welded between the two connecting plates 1, the metal rubber viscoelastic layer 4 is arranged between the constraint steel plate 2 and the shear steel plate 3, the constraint steel plate 2 and the shear steel plate 3 are welded between the two connecting plates 1 ... The upper and lower sides of the plate 3 and the metal rubber viscoelastic layer 4 are covered by an arc-shaped composite elastomer cover plate 7, the columnar encapsulated metal rubber core 5 passes through the constraint steel plate 2, the shear steel plate 3 and the metal rubber viscoelastic layer 4, and the two end surfaces of the columnar encapsulated metal rubber core 5 are covered by a circular cover plate 6. The internal metal spiral coils of the metal rubber material used in the metal rubber viscoelastic layer 4 and the columnar encapsulated metal rubber core 5 are in contact with each other in a manner of mutual meshing, hooking or sliding friction. The friction between the internal micro-element spring contact surfaces causes structural damping, and the slippage and irreversible distortion of the metal wire cause viscous damping.

[0025] The fan-shaped metal rubber viscoelastic damper uses a new type of shock-absorbing and energy-absorbing material - metal rubber. Metal rubber is a uniform elastic porous material made by weaving extremely fine spirally rolled stainless steel wire. It has the performance characteristics of fatigue resistance, high and low temperature resistance, corrosion resistance, etc. It is widely used in different fields such as aerospace, construction, bridges, machinery, etc., and has broad application value.

[0026] In this embodiment, the constraint steel plate 2, the shear steel plate 3 and the metal rubber viscoelastic layer 4 are all fan-shaped and share a common center. The constraint steel plate 2, the shear steel plate 3 and the metal rubber viscoelastic layer 4 are all provided with concentric holes for passing through the columnar packaged metal rubber core 5.

[0027] In this embodiment, the central angle of the constraint steel plate 2 and the shear steel plate 3 is α°, and the central angle of the metal rubber viscoelastic layer 4 is 2α-90°. The upper end of the metal rubber viscoelastic layer 4 is aligned with the constraint steel plate 2, and the lower end of the metal rubber viscoelastic layer 4 is aligned with the shear steel plate 3.

[0028] The angle between the two connecting plates 1 after installation is 90°. Bolt holes are distributed on the connecting plates 1, and the fan-shaped metal rubber viscoelastic damper is fixed by bolts.

[0029] As a preferred embodiment, in order to ensure that the beam-column node of the building structure has sufficient angular deformation space during the vibration of the building structure, so that the metal rubber viscoelastic layer 4 and the columnar packaged metal rubber core 5 can undergo sufficient shear slip deformation, the central angles of the fan-shaped constraint steel plate 2 and the fan-shaped shear steel plate 3 in this embodiment are both α°, that is, 75°, so the upper end of the constraint steel plate 2 is at an angle of 15° to the horizontal direction, and the lower end of the shear steel plate 3 is at an angle of 15° to the vertical direction, and they are welded to two connecting plates 1 respectively, and the two connecting plates 1 are perpendicular to each other. It should be noted here that for the constraint steel plate 2 and the shear steel plate 3, the end close to the beam is taken as the upper end.

[0030] As a preferred embodiment, in this embodiment, the center angles between the centers of the columnar encapsulated metal rubber cores 5 are all 15°, and the angle between the line connecting the center of the outer columnar encapsulated metal rubber core 5 and the center of the metal rubber viscoelastic layer 4 and the edge of the metal rubber viscoelastic layer 4 is also 15°, thereby achieving that the three columnar encapsulated metal rubber cores 5 are evenly distributed within the range of the metal rubber viscoelastic layer 4.

[0031] Example 2

[0032] This embodiment uses two columnar metal rubber core fan-shaped dampers such as Figure 6 As shown, the difference is that in this embodiment, only two cylindrical metal rubber cores are used, and the central angle of the core is 20°. The other structural components are the same as those in Embodiment 1.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fan-shaped metal rubber viscoelastic damper, comprising a composite elastic body and a connecting plate (1), characterized in that: The composite elastomer is composed of a constraining steel plate (2), a shearing steel plate (3), a metal rubber viscoelastic layer (4), a columnar encapsulated metal rubber core (5), a circular cover plate (6) and an arc-shaped composite elastomer cover plate (7); the constraining steel plate (2) and the shearing steel plate (3) are welded between the two connecting plates (1); the metal rubber viscoelastic layer (4) is arranged between the constraining steel plate (2) and the shearing steel plate (3); the upper and lower sides of the constraining steel plate (2), the shearing steel plate (3) and the metal rubber viscoelastic layer (4) are covered by the arc-shaped composite elastomer cover plate (7); the columnar encapsulated metal rubber core (5) passes through the constraining steel plate (2), the shearing steel plate (3) and the metal rubber viscoelastic layer (4); and the two end faces of the columnar encapsulated metal rubber core (5) are covered by the circular cover plate (6).

2. The fan-shaped metal rubber viscoelastic damper according to claim 1, characterized in that: The restraining steel plate (2) comprises two pieces, and the metal rubber viscoelastic layer (4) is overlapped and fixedly connected with the restraining steel plate (2) and the shearing steel plate (3).

3. The fan-shaped metal rubber viscoelastic damper according to claim 1, characterized in that: The restraining steel plate (2), the shearing steel plate (3) and the metal rubber viscoelastic layer (4) are all fan-shaped and share a common center. The restraining steel plate (2), the shearing steel plate (3) and the metal rubber viscoelastic layer (4) are all provided with concentric circular holes for passing the columnar packaged metal rubber core (5).

4. The fan-shaped metal rubber viscoelastic damper according to claim 1, characterized in that: The center angle of the constraining steel plate (2) and the shearing steel plate (3) is α°, the constraining steel plate (2) and the shearing steel plate (3) form a sector with a center angle of 90°, the center angle of the metal rubber viscoelastic layer (4) is (2α-90)°, the upper end of the metal rubber viscoelastic layer (4) is aligned with the constraining steel plate (2), and the lower end of the metal rubber viscoelastic layer (4) is aligned with the shearing steel plate (3).

5. The fan-shaped metal rubber viscoelastic damper according to claim 1, characterized in that: The number of the columnar packaged metal rubber cores (5) is determined by the size of the metal rubber viscoelastic layer (4).

6. The fan-shaped metal rubber viscoelastic damper according to claim 1, characterized in that: The included angle between the two connecting plates (1) after installation is 90°, and bolt holes are distributed on the connecting plates (1).

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