High damping rubber seismic isolation bearing

Abstract

This utility model provides a high-damping rubber seismic isolation bearing, relating to the field of rubber bearing technology. It includes: a first support plate; and a seismic isolation assembly, which includes a screw fixed to the first support plate. In normal use, the first support plate bears the load of the superstructure. When vibration occurs, the seismic isolation assembly plays a major role in vibration isolation. The high-damping rubber dissipates a large amount of vibration energy through its viscous hysteresis characteristics, while the low-stiffness rubber provides greater horizontal deformation capacity, allowing the bearing to have a certain displacement in the horizontal direction. By rotating the nut, the height of the bearing can be adjusted to adapt to different working conditions. The anti-overturning assembly ensures the stability of the bearing during vibration. The limiting rod slides within the hollow tube, limiting the horizontal displacement range of the bearing and preventing excessive offset. The limiting post is within the limiting seat, preventing the bearing from overturning. Thus, this seismic isolation bearing can effectively reduce the impact of vibration on the superstructure and protect structural safety.

Description

Technical Field

[0001] This utility model relates to the field of rubber bearing technology, and in particular to high-damping rubber seismic isolation bearings. Background Technology

[0002] High-damping rubber seismic isolation bearings are composite bearings that combine rubber and high-damping materials. They are widely used in the seismic design of buildings and bridges. They can effectively absorb and dissipate seismic wave energy, reduce the vibration response of structures, and improve the seismic performance of buildings or bridges. With the development of modern earthquake engineering, this type of bearing is widely used in seismic reinforcement projects.

[0003] However, in practical use, the following shortcomings still exist. For example, existing high-damping rubber seismic isolation bearings cannot limit the horizontal displacement range of the bearings to prevent excessive offset. Under the action of horizontal forces such as vibration, the bearings may exceed their design limits due to excessive displacement, leading to bearing damage or failure. This will not only render the seismic isolation system ineffective but may also cause instability or even collapse of the superstructure, posing a serious threat to the safety of people and property inside the building. One of the main functions of high-damping rubber seismic isolation bearings is to reduce the upward transmission of seismic energy. If the bearings cannot effectively limit horizontal displacement, they cannot accurately control the vibration of the structure, thereby reducing the effectiveness of the seismic isolation system and causing the building to suffer greater vibration and damage during earthquakes.

[0004] Therefore, this utility model proposes a high-damping rubber seismic isolation bearing to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a high-damping rubber seismic isolation bearing.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: a high-damping rubber seismic isolation bearing, comprising:

[0007] First support plate;

[0008] A vibration isolation assembly includes a screw fixed to a first support plate, a support provided on the screw, a nut threadedly connected to the screw, the nut being rotatably connected to the support, a high-damping rubber provided on the first support plate, and a low-stiffness rubber provided on the high-damping rubber.

[0009] An anti-overturning assembly includes a support frame fixed to a first support plate, a second support plate fixed to the top of the support frame, a third support plate fixed to the bottom of the support, a hollow tube fixed to the third support plate, a limit rod slidably connected inside the hollow tube, the limit rod being disposed on the second support plate, a limit post fixed to the support, a limit seat fixed to the top of the support frame, and the limit post being disposed on the limit seat.

[0010] Furthermore, a limiting plate is provided on the low-stiffness rubber, and a bolt is threadedly connected to the limiting plate, the bolt being threadedly connected to the support.

[0011] The beneficial effects of adopting the above-mentioned further solution are as follows: the limiting plate is fixed on the low-stiffness rubber and connected to the support threaded by bolts to form an adjustable constraint structure. When the vibration causes the support to shift, the limiting plate and the low-stiffness rubber deform together to absorb some energy. The tightness of the bolts can be adjusted to control the constraint strength of the limiting plate, prevent excessive deformation of the rubber layer, avoid rigid collisions, and ensure the stability and durability of the vibration isolation system.

[0012] Furthermore, a shock-absorbing component is provided at the bottom of the first support plate, the shock-absorbing component including a base plate disposed at the bottom of the first support plate.

[0013] The beneficial effects of adopting the above-mentioned further solution are: the base plate is fixed to the bottom of the first support plate as the mounting base of the shock absorption component. When vibration occurs, the vibration of the upper structure is transmitted to the base plate through the first support plate, and then the energy is dispersed by the connecting rod and the buffer damping. The rigidity of the base plate ensures the overall stability of the shock absorption component, while providing fixed support for the buffer damping and the telescopic spring, thereby enhancing the vertical shock absorption effect.

[0014] Furthermore, a connecting rod is fixed on the base plate, and the other end of the connecting rod is disposed on the first support plate.

[0015] The beneficial effects of adopting the above-mentioned further scheme are: the two ends of the connecting rod are respectively set on the base plate and the first support plate. When the vibration causes the first support plate to shift, the connecting rod restricts its excessive displacement, ensuring the geometric stability of the overall structure. At the same time, the connecting rod works in conjunction with the buffer damper to provide auxiliary constraints in the horizontal direction, preventing excessive lateral displacement of the support and improving the reliability of the seismic isolation system.

[0016] Furthermore, a buffer damper is fixed on the base plate, and the other end of the buffer damper is fixed on the first support plate.

[0017] The beneficial effects of adopting the above-mentioned further solution are: the buffer damper is installed between the base plate and the first support plate. When vibration energy is transmitted, it reduces the transmission of vibration. When used in conjunction with the telescopic spring, the buffer damper can effectively suppress high-frequency vibration and provide additional damping force during large displacement, preventing structural resonance and improving seismic isolation performance.

[0018] Furthermore, a telescopic spring is provided on the buffer damper, one end of which is fixed to the first support plate and the other end of which is fixed to the base plate.

[0019] The beneficial effects of adopting the above-mentioned further scheme are as follows: by setting up the telescopic spring, when the vibration causes the first support plate and the bottom plate to move relative to each other, the telescopic spring stores and releases energy through elastic deformation, providing restoring force. In conjunction with the buffer damping, it takes into account both energy dissipation and reset functions, ensuring that the structure can automatically return to its original position after seismic isolation, and reducing residual deformation.

[0020] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0021] In this invention, under normal use, the first support plate bears the load of the superstructure. When vibration occurs, the vibration isolation component plays a major role in vibration isolation. The high-damping rubber dissipates a large amount of vibration energy through its viscous hysteresis characteristics, while the low-stiffness rubber provides a large horizontal deformation capacity, allowing the support to have a certain displacement in the horizontal direction. By rotating the nut, the height of the support can be adjusted to adapt to different working conditions. The anti-overturning component ensures the stability of the support during vibration. The limiting rod slides inside the hollow tube, limiting the horizontal displacement range of the support and preventing excessive offset. The limiting column is inside the limiting seat to prevent the support from overturning. In this way, the vibration isolation support can effectively reduce the impact of vibration on the superstructure and protect the structural safety. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the high-damping rubber seismic isolation bearing of this utility model;

[0023] Figure 2 This is a schematic diagram of the vibration isolation component structure of the high-damping rubber vibration isolation bearing of this utility model.

[0024] Figure 3 This is a structural breakdown diagram of the vibration isolation component of the high-damping rubber vibration isolation bearing of this utility model.

[0025] Figure 4 This is a schematic diagram of the anti-overturning component structure of the high-damping rubber seismic isolation bearing of this utility model;

[0026] Figure 5 This is a schematic diagram of the damping component structure of the high-damping rubber seismic isolation bearing of this utility model.

[0027] Figure label:

[0028] 1. First support plate;

[0029] 2. Vibration isolation components; 21. Screw; 22. Bearing; 23. Nut; 24. High-damping rubber; 25. Low-stiffness rubber; 26. Limiting plate; 27. Bolt;

[0030] 3. Anti-overturning component; 31. Support frame; 32. Second support plate; 33. Third support plate; 34. Hollow tube; 35. Limiting rod; 36. Limiting post; 37. Limiting seat;

[0031] 4. Shock absorption components; 41. Base plate; 42. Connecting rod; 43. Buffer damping; 44. Telescopic spring. Detailed Implementation

[0032] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0033] like Figures 1-4 As shown, this embodiment provides a technical solution: a high-damping rubber seismic isolation bearing, comprising:

[0034] First support plate 1;

[0035] The vibration isolation component 2 includes a screw 21 fixed on the first support plate 1, a support 22 provided on the screw 21, a nut 23 threadedly connected to the screw 21, the nut 23 being rotatably connected to the support 22, a high-damping rubber 24 provided on the first support plate 1, and a low-stiffness rubber 25 provided on the high-damping rubber 24.

[0036] The anti-overturning component 3 includes a support frame 31 fixed to a first support plate 1, a second support plate 32 fixed to the top of the support frame 31, a third support plate 33 fixed to the bottom of a support 22, a hollow tube 34 fixed to the third support plate 33, a limit rod 35 slidably connected inside the hollow tube 34, the limit rod 35 being disposed on the second support plate 32, a limit post 36 fixed to the support 22, and a limit seat 37 fixed to the top of the support frame 31, with the limit post 36 disposed on the limit seat 37. Under normal use, the first support plate 1 bears the load of the superstructure. When vibration occurs, the seismic isolation component 2 plays a major seismic isolation role. Damping rubber 24 dissipates a large amount of vibration energy through its viscous hysteresis characteristics, while low-stiffness rubber 25 provides greater horizontal deformation capacity, allowing the support 22 to have a certain displacement in the horizontal direction. By rotating nut 23, the height of the support 22 can be adjusted to adapt to different working conditions. Anti-overturning component 3 ensures the stability of support 22 during vibration. Limiting rod 35 slides in hollow tube 34, limiting the horizontal displacement range of support 22 and preventing excessive offset. Limiting column 36 is in limiting seat 37 to prevent support 22 from overturning. In this way, the seismic isolation support 22 can effectively reduce the impact of vibration on the superstructure and protect structural safety.

[0037] The above solutions also have the problem that support 22 cannot achieve the desired vertical damping effect when subjected to vibration, such as... Figure 3 As shown: A limiting plate 26 is provided on the low-stiffness rubber 25. Bolts 27 are threadedly connected to the limiting plate 26 and are threadedly connected to the support 22. The limiting plate 26 is fixed to the low-stiffness rubber 25 and is threadedly connected to the support 22 through the bolts 27 to form an adjustable constraint structure. When the vibration causes the support 22 to displace, the limiting plate 26 and the low-stiffness rubber 25 deform together to absorb some energy. The bolts 27 can be adjusted to control the constraint strength of the limiting plate 26, prevent excessive deformation of the rubber layer, and avoid rigid collisions, thus ensuring the stability and durability of the vibration isolation system.

[0038] like Figure 1 as well as Figure 5As shown, a damping assembly 4 is provided at the bottom of the first support plate 1. The damping assembly 4 includes a base plate 41 fixed at the bottom of the first support plate 1, serving as the mounting base for the damping assembly 4. During vibration, the vibration of the upper structure is transmitted to the base plate 41 through the first support plate 1, and then the energy is dispersed by the connecting rod 42 and the buffer damper 43. The rigidity of the base plate 41 ensures the overall stability of the damping assembly 4, while providing fixed support for the buffer damper 43 and the telescopic spring 44, enhancing the vertical damping effect. A connecting rod 42 is fixed on the base plate 41, with the other end of the connecting rod 42 set on the first support plate 1. The two ends of the connecting rod 42 are respectively set on the base plate 41 and the first support plate 1. When the vibration causes the first support plate 1 to shift, the connecting rod 42 restricts its excessive displacement, ensuring the geometric stability of the overall structure. At the same time, the connecting rod 42 works in conjunction with the buffer damper 43 to provide auxiliary constraints in the horizontal direction, preventing the support 22 from shifting. To improve the reliability of the seismic isolation system, a buffer damper 43 is fixed on the base plate 41, with the other end of the buffer damper 43 fixed on the first support plate 1. The buffer damper 43 is installed between the base plate 41 and the first support plate 1. When vibration energy is transmitted, it reduces vibration transmission. When used in conjunction with the telescopic spring 44, the buffer damper 43 can effectively suppress high-frequency vibration and provide additional damping force during large displacements to prevent structural resonance and improve seismic isolation performance. A telescopic spring 44 is installed on the buffer damper 43. One end of the telescopic spring 44 is fixed on the first support plate 1, and the other end is fixed on the base plate 41. Through the telescopic spring 44, when the vibration causes relative displacement between the first support plate 1 and the base plate 41, the telescopic spring 44 stores and releases energy through elastic deformation, providing a restoring force. In conjunction with the buffer damper 43, it takes into account both energy dissipation and reset functions, ensuring that the structure can automatically return to its original position after seismic isolation and reducing residual deformation.

[0039] Working principle:

[0040] like Figures 1-5As shown, under normal operating conditions, the first support plate 1 bears the load of the superstructure. Once vibration occurs, the vibration isolation component 2 plays a major role. The high-damping rubber 24, with its viscous hysteresis characteristics, consumes a large amount of vibration energy, while the low-stiffness rubber 25 provides sufficient horizontal deformation space, allowing the support 22 to make moderate displacement in the horizontal direction. By rotating the nut 23, the height of the support 22 can be flexibly adjusted to suit different usage scenarios. The presence of the anti-overturning component 3 ensures the stability of the support 22 during vibration. The limiting rod 35 slides within the hollow tube 34, precisely limiting the horizontal displacement range of the support 22 and preventing excessive offset. The limiting column 36 is within the limiting seat 37 to prevent the support 22 from overturning, building a solid defense for structural safety. The limiting plate 26 on the low-stiffness rubber 25 is connected to the support 22 by bolts 27, forming an adjustable constraint structure. When vibration causes displacement of support 22, limiting plate 26 and low-stiffness rubber 25 deform together to absorb some energy. The tightness of bolt 27 can be flexibly adjusted to control the constraint strength of limiting plate 26, prevent excessive deformation of rubber layer, avoid rigid collision, and extend the service life of the vibration isolation system. At the bottom of the first support plate 1, damping component 4 further enhances the vibration isolation effect. The base plate 41, as the mounting base, not only ensures the overall stability of damping component 4, but also provides fixed support for buffer damping 43 and telescopic spring 44. Connecting rod 42 limits excessive offset of the first support plate 1 and works with buffer damping 43 to suppress excessive lateral displacement in the horizontal direction. Buffer damping 43 and telescopic spring 44 work together to effectively suppress high-frequency vibration during vibration, prevent structural resonance, and provide restoring force so that the structure automatically returns to its original position after vibration isolation, reducing residual deformation and ensuring the safety of the superstructure in all aspects.

[0041] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A high damping rubber seismic isolation bearing, characterized by, include: First support plate (1); The vibration isolation assembly (2) includes a screw (21) fixed on a first support plate (1), a support (22) is provided on the screw (21), a nut (23) is threaded on the screw (21), the nut (23) is rotatably connected to the support (22), a high-damping rubber (24) is provided on the first support plate (1), and a low-stiffness rubber (25) is provided on the high-damping rubber (24). An anti-overturning component (3) includes a support frame (31) fixed on a first support plate (1), a second support plate (32) fixed to the top of the support frame (31), a third support plate (33) fixed to the bottom of the support (22), a hollow tube (34) fixed on the third support plate (33), a limiting rod (35) slidably connected inside the hollow tube (34), the limiting rod (35) being disposed on the second support plate (32), a limiting post (36) fixed on the support (22), a limiting seat (37) fixed to the top of the support frame (31), and the limiting post (36) being disposed on the limiting seat (37).

2. The high damping rubber seismic isolation bearing according to claim 1, wherein: A limiting plate (26) is provided on the low-stiffness rubber (25), and a bolt (27) is threadedly connected to the limiting plate (26), and the bolt (27) is threadedly connected to the support (22).

3. The high damping rubber seismic isolation bearing of claim 1, wherein: The bottom of the first support plate (1) is provided with a shock-absorbing component (4), which includes a base plate (41) disposed at the bottom of the first support plate (1).

4. The high damping rubber seismic isolation bearing according to claim 3, wherein: A connecting rod (42) is fixed on the base plate (41), and the other end of the connecting rod (42) is set on the first support plate (1).

5. The high damping rubber seismic isolation bearing of claim 3, wherein: A buffer damper (43) is fixed on the base plate (41), and the other end of the buffer damper (43) is fixed on the first support plate (1).

6. The high damping rubber seismic isolation bearing of claim 5, wherein: The buffer damper (43) is provided with a telescopic spring (44), one end of which is fixed on the first support plate (1) and the other end of which is fixed on the base plate (41).

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