Tensile washer for shock insulation rubber support

Abstract

The utility model belongs to the technical field of building and bridge shock insulation supports, and relates to a tensile gasket for a shock insulation rubber support, which comprises a hemispherical elastic body, the top surface of the elastic body is connected with an upper gasket in a vulcanization manner, and the bottom surface of the elastic body is connected with a lower gasket in a vulcanization manner; the elastic body is provided with a conical inner cavity, an integrally connected conical boss is constructed on the upper surface of the lower gasket, the conical boss is arranged in the conical inner cavity, and a gap is formed between the conical boss and the inner wall of the conical inner cavity; the upper gasket, the elastic body and the lower gasket are provided with axial through holes. According to the tensile gasket, the rubber shock insulation support has the capacity of releasing vertical tensile force while the vertical bearing and horizontal shock insulation functions of the rubber shock insulation support are not affected.

Description

Technical Field

[0001] The utility model belongs to the technical field of earthquake-isolating supports for buildings and bridges, and relates to a tensile washer for an earthquake-isolating rubber support. Background Art

[0002] Rubber seismic isolation bearings are widely used in various housing buildings, highway bridges and structural reinforcement. They use multiple layers of steel plates and multiple layers of rubber alternately stacked and well bonded, and have a series of advantages such as good horizontal performance, damping coefficient, vertical performance and vertical bearing capacity. However, this type of seismic isolation rubber bearing can only withstand the pressure transmitted from the upper part, and has poor ability to withstand tension. When the seismic isolation layer bearing is pulled into yield, it will cause the entire structure to overturn and fail. Therefore, in the first paragraph of Article 12.2.4 of the national standard GB50011-2001 "Code for Seismic Design of Buildings", it is clearly stipulated that "the seismic isolation layer rubber bearing should not be tensile under rare earthquakes." However, it is normal for some buildings and bridges to have tensile stress in the seismic isolation bearings under rare earthquakes. Many buildings or bridges have tensile stress. Therefore, this deficiency of seismic isolation rubber bearings limits the scope of use and promotion and application of seismic isolation rubber bearings. Summary of the invention

[0003] In view of the above problems, the utility model provides a tensile washer for a seismic isolation rubber bearing, which can enable the rubber seismic isolation bearing to release vertical tension without affecting the vertical bearing and horizontal seismic isolation functions of the rubber seismic isolation bearing itself.

[0004] According to the technical solution of the utility model: a tensile gasket for a seismic isolation rubber bearing, characterized in that: it includes a hemispherical elastic body, the top surface of the elastic body is vulcanized and connected to the upper gasket, and the bottom surface of the elastic body is vulcanized and connected to the lower gasket;

[0005] The elastic body is provided with a conical inner cavity, and the upper surface of the lower gasket is constructed with an integrally connected conical boss, the conical boss is placed in the conical inner cavity, and there is a gap between the conical boss and the inner wall of the conical inner cavity;

[0006] The upper washer, the elastic body and the lower washer are provided with axial through holes.

[0007] As a further improvement of the present invention, the elastic body is made of rubber material.

[0008] As a further improvement of the present invention, the top outer diameter of the elastic body is smaller than the bottom outer diameter of the elastic body.

[0009] As a further improvement of the present invention, the upper washer, the elastic body and the lower washer are coaxially arranged.

[0010] As a further improvement of the utility model, the inner diameter of the inner hole of the upper gasket is consistent with the inner diameter of the circular hole at the top of the elastic body.

[0011] As a further improvement of the present invention, there is an elastic compression distance between the top end of the conical boss and the top surface of the elastic body.

[0012] The technical effect of the utility model is that the tensile gasket for the seismic isolation rubber bearing is simple and efficient to use, has a simple and reliable structure, and is installed in the same way as an ordinary rubber bearing. There is no need to make any changes to the rubber bearing or add other devices, and it only needs to be installed instead of bolts and gaskets.

[0013] The tensile gasket for the seismic isolation rubber bearing is designed with a semi-spherical structure using high-performance rubber. When the bearing is subjected to vertical tension, the rubber in the semi-spherical structure can effectively self-compress and deform to provide compression stiffness, thereby releasing the vertical tension of the bearing body and buffering the pulling stiffness.

[0014] The tension washer for the seismic isolation rubber bearing is designed with a conical boss on the lower washer, which increases the shear resistance of the bolts installed in the tension washer and prevents shear failure of the bolts when the rubber bearing moves horizontally.

[0015] The tensile gasket for the seismic isolation rubber bearing adopts an aging-resistant formula, is not affected by environmental aging, is easy to maintain and has a long service life.

[0016] The upper metal ring 1, high-performance compression rubber 2, and lower metal ring 3 of the seismic isolation rubber bearing tensile gasket are vulcanized into an integrated part by a hot vulcanization process. The hot vulcanization process can meet the rigidity of the rubber and the bonding strength of the three components while ensuring the integrity of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model.

[0018] Figure 2 It is a schematic diagram of the working state of the utility model. DETAILED DESCRIPTION

[0019] The specific implementation of the utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 , 2 It includes an upper washer 1, an elastic body 2, a lower washer 3, a conical boss 3-1, a rubber seismic isolation bearing body 4, concrete 5, an embedded plate 6, a sleeve 7, a bolt 8, etc.

[0021] like Figure 1 , 2As shown, the utility model is a tensile gasket for a seismic isolation rubber bearing, comprising a hemispherical elastic body 2, the top surface of the elastic body 2 is vulcanized and connected to the upper gasket 1, the bottom surface of the elastic body 2 is vulcanized and connected to the lower gasket 3, and there is an elastic compression distance between the top of the conical boss 3-1 and the top surface of the elastic body 2, so as to achieve the purpose of releasing the tension by the compression of the elastic body 2 during operation. The upper gasket 1, the elastic body 2, and the lower gasket 3 are vulcanized into an integral part by a hot vulcanization process, and the hot vulcanization process can meet the rigidity of the rubber and the bonding strength between the three components under the premise of ensuring the integrity of the product.

[0022] Furthermore, the elastic body 2 is provided with a conical inner cavity, and the upper surface of the lower washer 3 is constructed with an integrally connected conical boss 3-1, which is placed in the conical inner cavity, and there is a gap between the conical boss 3-1 and the inner wall of the conical inner cavity. The conical boss 3-1 serves to increase the contact area of ​​the bolt installed in the tension washer and increase the shear resistance. The upper washer 1 and the lower washer 3 are both round washer-type metal parts.

[0023] The upper washer 1, the elastic body 2 and the lower washer 3 are coaxially arranged, and the upper washer 1, the elastic body 2 and the lower washer 3 are provided with axial through holes to achieve the purpose of passing the bolts during operation. It can be understood that the inner hole of the upper washer 1 is consistent with the inner diameter of the circular hole at the top of the elastic body 2.

[0024] The elastic body 2 is made of rubber material, and can generate rigidity to resist and buffer the pulling force during operation.

[0025] Furthermore, the top outer diameter of the elastic body 2 is smaller than the bottom outer diameter of the elastic body 2 .

[0026] like Figure 1 , 2 As shown, when the product of the utility model is working, during the installation process of the product, a sleeve 7 is embedded in the concrete 5, an embedded plate 6 is embedded on the top surface of the concrete 5, the rubber seismic isolation bearing body 4 is placed on the embedded plate 6, and a bolt 8 is used to pass through the rubber seismic isolation bearing body 4 with a tensile gasket and installed on the rubber seismic isolation bearing body 4; when the rubber seismic isolation bearing body 4 has a horizontal displacement, the utility model product plays the role of a gasket, does not affect the displacement of the rubber seismic isolation bearing body 4 in all directions within the plane, and the rubber seismic isolation bearing body 4 produces horizontal displacement deformation to reduce damage to the building.

[0027] When the rubber isolation support body 4 generates an upward pulling displacement, the connecting plate of the rubber isolation support body 4 drives the lower gasket 3 to generate a tensile force. At this time, the elastic body 2 is compressed and deformed, generating rigidity to resist and buffer the pulling force. The tensile gasket of the utility model is deformed by tension before the rubber isolation support body 4, releasing the tensile force to prevent the rubber isolation support body 4 from yielding under tension, which will cause the overall structure to overturn and fail.

Claims

1. A tensile washer for a seismic isolation rubber bearing, characterized in that: It comprises a hemispherical elastic body (2), the top surface of the elastic body (2) is vulcanized and connected to an upper gasket (1), and the bottom surface of the elastic body (2) is vulcanized and connected to a lower gasket (3); The elastic body (2) is provided with a conical inner cavity, and the upper surface of the lower gasket (3) is configured with an integrally connected conical boss (3-1), the conical boss (3-1) is placed in the conical inner cavity, and a gap exists between the conical boss (3-1) and the inner wall of the conical inner cavity; The upper gasket (1), the elastic body (2) and the lower gasket (3) are provided with axial through holes.

2. The tensile washer for the seismic isolation rubber bearing according to claim 1, characterized in that: The elastic body (2) is made of rubber material.

3. The tensile washer for the seismic isolation rubber bearing according to claim 1, characterized in that: The top outer diameter of the elastic body (2) is smaller than the bottom outer diameter of the elastic body (2).

4. The tensile washer for the seismic isolation rubber bearing according to claim 1, characterized in that: The upper gasket (1), the elastic body (2) and the lower gasket (3) are coaxially arranged.

5. The tensile washer for the seismic isolation rubber bearing according to claim 1, characterized in that: The inner diameter of the inner hole of the upper gasket (1) is consistent with the inner diameter of the circular hole at the top of the elastic body (2).

6. The tensile washer for the seismic isolation rubber bearing according to claim 1, characterized in that: There is an elastic compression distance between the top end of the conical boss (3-1) and the top surface of the elastic body (2).

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