Bridge spherical support

Abstract

The utility model provides a kind of bridge spherical support, it is related to bridge technical field, including support plate, the top of support plate and near center place is fixedly connected with bottom basin, the top of bottom basin is equipped with ball groove, the inside of ball groove is embedded with spherical four fluorine board, the top of spherical four fluorine board is embedded with steel lining plate, the top of steel lining plate is equipped with round groove, the inside of round groove is embedded with plane four fluorine board, the top of plane four fluorine board is attached with stainless steel plate, the top of stainless steel plate is equipped with middle plate, the four sidewalls of support plate and middle plate are equipped with mounting plate, the both ends of mounting plate are equipped with second mounting hole. In the utility model, first spring, second spring and damper cooperate, dynamic buffering load impact, when earthquake, vibration energy is greatly attenuated, protect bridge main structure;Sealing rubber ring enhances sealing, delays internal component aging, prolongs support life.

Description

Technical Field

[0001] This utility model relates to the field of bridge technology, and in particular to a spherical bearing for bridges. Background Technology

[0002] With the rapid development of transportation, the scale and technical requirements of bridge construction are constantly increasing. On the one hand, the construction of special-structure bridges such as long-span bridges (e.g., cable-stayed bridges, suspension bridges), curved bridges, and wide bridges is increasing. These bridges, when subjected to traffic loads, temperature changes, and seismic forces, place higher demands on the bearing capacity and deformation adaptability of their supports. On the other hand, to improve driving comfort and safety, bridge structures need to maintain good performance under various working conditions, which requires support with superior performance. Traditional supports have gradually revealed some limitations when facing complex working conditions and cannot meet the needs of modern bridge construction, leading to the development of spherical bridge bearings.

[0003] Existing bridge spherical bearings typically lack efficient vibration reduction and energy dissipation mechanisms. Under dynamic loads such as earthquakes, bridges experience large vibration responses, and the bearings and superstructure are prone to damage. At the same time, the integration of vibration reduction components (such as springs and damping components) is low, and after damage, the entire bearing needs to be disassembled and replaced, which is complex, costly, and affects the operational efficiency of bridges. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the existing technology where bridge spherical bearings usually lack efficient damping and energy dissipation mechanisms, resulting in large bridge vibration response and easy damage to the bearings and superstructure under dynamic loads such as earthquakes. Therefore, a bridge spherical bearing is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a spherical bridge bearing, comprising a bearing plate, a base plate fixedly connected to the top of the bearing plate near its center, a spherical groove formed on the top of the base plate, a spherical PTFE plate embedded inside the spherical groove, a steel liner plate embedded on the top of the spherical PTFE plate, a circular groove formed on the top of the steel liner plate, a flat PTFE plate embedded inside the circular groove, a stainless steel plate attached to the top of the flat PTFE plate, a middle plate on the top of the stainless steel plate, mounting plates on all four side walls of the bearing plate and the middle plate, second mounting holes formed at both ends of the mounting plates, and mounting brackets formed on all four side walls of the bearing plate and the middle plate at the second mounting holes. The mounting system includes symmetrically arranged fixing plates between the support plate and the middle plate, near the mounting plate. Each fixing plate is fixedly connected to the mounting plate. A vertical column is fixedly connected to the top of the lowest fixing plate. A convex groove is formed at the top of each vertical column, and a convex component is embedded and slidably connected inside the groove. The top of the convex component is fixedly connected to the upper fixing plate, and a first spring is fixedly connected to the bottom of the convex component. A second spring is fitted onto the surface of the vertical column, and both ends of the second spring are fixedly connected to the fixing plates. A circular hole is formed at the center of the middle plate, and a turntable is rotatably connected inside the hole. The bottom of the turntable is fixedly connected to the top of a stainless steel plate, and a top plate is fixedly connected to the top of the turntable.

[0006] Preferably, a sealing rubber ring is provided at the top of the basin and near the edge, and the top of the sealing rubber ring is in contact with the bottom of the middle plate.

[0007] Preferably, the support plate and the top plate are provided with first mounting holes on their surfaces and near the four corners.

[0008] Preferably, positioning grooves are provided on all four side walls of the support plate and the middle plate near the center, and positioning rods are embedded in the interior of each positioning groove, with one end of each positioning rod being fixedly connected to the mounting plate.

[0009] Preferably, a damper is fixedly connected inside the convex groove and between the first springs, and the top of the damper is fixedly connected to the bottom of the convex member.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, the first spring, the second spring and the damper work together to dynamically buffer the impact of the load, greatly attenuate the vibration energy during an earthquake, and protect the main structure of the bridge; the sealing rubber ring enhances the sealing performance, delays the aging of internal components, and extends the service life of the bearing.

[0012] 2. In this utility model, the modular mounting plate, fixing plate, mounting groove and second mounting hole are connected, which allows the shock absorption components to be quickly disassembled and replaced without disassembling the main support body, reducing operation and maintenance costs and time, and ensuring the continuous and stable operation of the bridge. Attached Figure Description

[0013] Figure 1 This utility model provides a three-dimensional view of the overall structure of a bridge spherical bearing;

[0014] Figure 2 This utility model provides a partial three-dimensional structural view of a bridge spherical bearing;

[0015] Figure 3 This utility model provides an overall structural cross-sectional view of a bridge spherical bearing;

[0016] Figure 4 This utility model provides a partial structural cross-sectional view of a bridge spherical bearing.

[0017] Legend: 1. Support plate; 2. Base plate; 3. Ball groove; 4. Spherical PTFE plate; 5. Steel lining plate; 6. Circular groove; 7. Flat PTFE plate; 8. Stainless steel plate; 9. Middle plate; 10. Sealing rubber ring; 11. First mounting hole; 12. Mounting plate; 13. Positioning groove; 14. Positioning rod; 15. Mounting groove; 16. Fixing plate; 17. Vertical column; 18. Convex groove; 19. Convex part; 20. Damper; 21. First spring; 22. Second spring; 23. Second mounting hole; 24. Circular hole; 25. Turntable; 26. Top plate. Detailed Implementation

[0018] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0019] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0020] Example 1, as Figure 1-4As shown, this utility model provides a spherical bridge bearing, including a bearing plate 1. A base plate 2 is fixedly connected to the top of the bearing plate 1 near its center. A spherical groove 3 is formed on the top of the base plate 2. A spherical PTFE plate 4 is embedded inside the spherical groove 3. A steel liner plate 5 is embedded on the top of the spherical PTFE plate 4. A circular groove 6 is formed on the top of the steel liner plate 5. A flat PTFE plate 7 is embedded inside the circular groove 6. A stainless steel plate 8 is attached to the top of the flat PTFE plate 7. A middle plate 9 is provided on the top of the stainless steel plate 8. Mounting plates 12 are provided on all four side walls of the bearing plate 1 and the middle plate 9. Second mounting holes 23 are formed at both ends of the mounting plates 12. Mounting grooves 15 are formed on all four side walls of the bearing plate 1 and the middle plate 9 at the second mounting holes 23. A mounting groove 15 is formed between the bearing plate 1 and the middle plate 9. A fixing plate 16 is symmetrically provided near the mounting plate 12. The fixing plates 16 are all fixedly connected to the mounting plate 12. The top of the bottom fixing plate 16 is fixedly connected to a vertical column 17. The top of the vertical column 17 is provided with a convex groove 18. A convex part 19 is embedded and slidably connected inside the convex groove 18. The top of the convex part 19 is fixedly connected to the upper fixing plate 16. The bottom of the convex part 19 is fixedly connected to a first spring 21. A second spring 22 is sleeved on the surface of the vertical column 17. Both ends of the second spring 22 are fixedly connected to the fixing plate 16. A round hole 24 is provided at the center of the middle plate 9. A turntable 25 is rotatably connected inside the round hole 24. The bottom of the turntable 25 is fixedly connected to the top of the stainless steel plate 8. The top of the turntable 25 is fixedly connected to a top plate 26.

[0021] The overall effect of Embodiment 1 is as follows: a base basin 2 is fixedly connected to the top of the support plate 1 near its center. A spherical groove 3 is formed on the top of the base basin 2. A spherical PTFE plate 4 is embedded inside the spherical groove 3. A steel liner plate 5 is embedded on the top of the spherical PTFE plate 4. A circular groove 6 is formed on the top of the steel liner plate 5. A flat PTFE plate 7 is embedded inside the circular groove 6. A stainless steel plate 8 is attached to the top of the flat PTFE plate 7. A middle plate 9 is provided on the top of the stainless steel plate 8. This allows the spherical PTFE plate 4 to be embedded in the spherical groove 3 of the base basin 2, and the steel liner plate 5 to be placed on the spherical PTFE plate 4. A flat PTFE plate 7 is embedded in a circular groove 6 of a steel liner plate 5. A stainless steel plate 8 is attached to the flat PTFE plate 7 and connected to the middle plate 9. These components utilize the low-friction properties of PTFE material to provide a foundation for subsequent deformation adaptation. Mounting plates 12 are provided on all four side walls of the support plate 1 and the middle plate 9. Second mounting holes 23 are opened at both ends of the mounting plates 12. Mounting grooves 15 are opened on all four side walls of the support plate 1 and the middle plate 9 at the second mounting holes 23, which can achieve the effect of bolts passing through the second mounting holes 23 and being screwed into the mounting grooves 15. A fixing plate 16 is symmetrically provided between the middle plate 1 and the middle plate 9, and near the mounting plate 12. The fixing plates 16 are all fixedly connected to the mounting plate 12. The top of the bottom fixing plate 16 is fixedly connected to a vertical column 17. The top of the vertical column 17 has a convex groove 18. A convex part 19 is embedded in and slidably connected inside the convex groove 18. The top of the convex part 19 is fixedly connected to the upper fixing plate 16. The bottom of the convex part 19 is fixedly connected to a first spring 21. A second spring 22 is sleeved on the surface of the vertical column 17. Both ends of the second spring 22 are fixedly connected to the fixing plate 16. The fixed connection allows the load to press down the middle plate 9, and the vertical column 17 to push the convex part 19 to compress the first spring 21. The first spring 21 buffers the vertical impact force through elastic deformation, while the second spring 22 helps to absorb the horizontal vibration energy, thus initially attenuating the load. A circular hole 24 is opened at the center of the middle plate 9, and a turntable 25 is rotatably connected inside the circular hole 24. The bottom of the turntable 25 is fixedly connected to the top of the stainless steel plate 8, and the top of the turntable 25 is fixedly connected to the top plate 26, which can enable the top plate 26 to have a slight axial rotation.

[0022] Example 2, as Figure 1-4 As shown, a sealing rubber ring 10 is provided on the top of the base plate 2 near the edge, and the top of the sealing rubber ring 10 is in contact with the bottom of the middle plate 9; first mounting holes 11 are provided on the surface of the support plate 1 and the middle plate 9 near the four corners; positioning grooves 13 are provided on the four side walls of the support plate 1 and the top plate 26 near the center, and positioning rods 14 are embedded in the interior of the positioning grooves 13, and one end of the positioning rods 14 is fixedly connected to the mounting plate 12; a damper 20 is fixedly connected inside the convex groove 18 between the first springs 21, and the top of the damper 20 is fixedly connected to the bottom of the convex part 19.

[0023] The overall effect of Embodiment 2 is as follows: A sealing rubber ring 10 is provided on the top of the base 2 near its edge, with the top of the sealing rubber ring 10 abutting the bottom of the middle plate 9. This enhances the seal between the middle plate 9 and the base 2, preventing dust from entering the ball groove 3. First mounting holes 11 are provided on the surfaces of the support plate 1 and the top plate 26 near their four corners, allowing for the installation and fixing of the support plate 1 and the middle plate 9. Positioning grooves 13 are provided on the four side walls of the support plate 1 and the middle plate 9 near their center, with positioning rods 14 embedded inside each groove. One end of each positioning rod 14 is fixedly connected to the mounting plate 12, providing positioning for the mounting plate 12. A damper 20 is fixedly connected inside the convex groove 18 between the first springs 21, with the top of the damper 20 fixedly connected to the bottom of the convex member 19, providing damping.

[0024] Working principle: The core of the support consists of a sliding and rotating system composed of a spherical PTFE plate 4, a steel liner plate 5, a flat PTFE plate 7, and a stainless steel plate 8. The spherical PTFE plate 4 is embedded in the spherical groove 3 of the base plate 2. The steel liner plate 5 is placed on the spherical PTFE plate 4. The flat PTFE plate 7 is embedded in the circular groove 6 of the steel liner plate 5. The stainless steel plate 8 is attached to the flat PTFE plate 7 and connected to the turntable 25. When the bridge elongates or shortens due to temperature changes, or when the beam rotates due to vehicle loads, the beam causes the middle plate 9 to deflect. The top plate 26 transmits the force to the flat PTFE plate 7 through the turntable 25 and the stainless steel plate 8. Due to the rotational requirements of the beam, a relative rotational tendency occurs between the flat PTFE plate 7 and the spherical PTFE plate 4. At this time, the spherical PTFE plate 4 slides along the arc surface of the spherical groove 3 of the base basin 2, and the steel liner plate 5 rotates synchronously with the spherical PTFE plate 4, realizing the adaptive rotation angle adjustment of the support, so that the rotation angle of the beam has "a place to go", avoiding cracks in the bridge structure due to forced deformation. When the bridge is subjected to temperature expansion and contraction and vehicle braking force, the horizontal displacement of the beam causes the middle plate 9 and stainless steel plate 8 to move. The relative sliding between the flat PTFE plate 7 and the stainless steel plate 8 is initiated due to friction. The flat PTFE plate 7 slides in the circular groove 6 of the steel liner plate 5. With the slight rotation compensation of the spherical PTFE plate 4, the horizontal displacement of the support is adapted, so that the horizontal deformation of the beam is "smoothly released" without additional strain on the bridge structure. When encountering dynamic loads such as earthquakes and heavy vehicle impacts, the damping system is activated, and vertical damping is applied. The load causes the middle plate 9 to press down, and the vertical column 17 pushes the convex member 19. The first spring 21 is compressed, and the spring buffers the vertical impact force through elastic deformation. At the same time, the second spring 22 assists in absorbing the horizontal vibration energy, initially attenuating the load. The damper 20 is compressed or rebounded with the convex part 19. It uses the friction and viscosity characteristics of the internal damping material to convert the vibration energy into heat energy for dissipation, further reducing the vibration amplitude of the bridge and protecting the beam and pier from damage due to severe vibration. When the vibration damping components need maintenance, the detachable connection between the mounting plate 12 and the bearing plate 1 and the middle plate 9 can be used to loosen the positioning rod 14 and bolts, so that the mounting plate 12 can separate the fixed plate 16, vertical column 17 and other components from the bearing body. The aged or damaged first spring 21, second spring 22 or damper 20 can be replaced separately without disassembling the entire bearing, reducing maintenance time and cost and ensuring that the bridge can be quickly restored to operation.

[0025] The wiring diagrams of the spherical PTFE plate 4 and the flat PTFE plate 7 in this utility model are common knowledge in the field. Their working principle is a well-known technology. The appropriate model is selected according to the actual use. Therefore, the control method and wiring arrangement of the spherical PTFE plate 4 and the flat PTFE plate 7 will not be explained in detail.

[0026] 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 spherical bridge bearing, comprising a bearing plate (1), characterized in that: A base plate (2) is fixedly connected to the top of the support plate (1) near its center. A ball groove (3) is provided on the top of the base plate (2). A spherical PTFE plate (4) is embedded inside the ball groove (3). A steel liner plate (5) is embedded on the top of the spherical PTFE plate (4). A circular groove (6) is provided on the top of the steel liner plate (5). A flat PTFE plate (7) is embedded inside the circular groove (6). A stainless steel plate (8) is attached to the top of the flat PTFE plate (7). A middle plate (9) is provided on the top of the stainless steel plate (8). Mounting plates (12) are provided on all four side walls of the support plate (1) and the middle plate (9). Second mounting holes (23) are provided at both ends of the mounting plates (12). Mounting grooves (15) are provided on all four side walls of the support plate (1) and the middle plate (9) at the second mounting holes (23). The support plate (1) and the middle plate (9) are symmetrical near the mounting plates (12). A fixing plate (16) is provided, and the fixing plate (16) is fixedly connected to the mounting plate (12). The top of the bottom fixing plate (16) is fixedly connected to a vertical column (17). The top of the vertical column (17) is provided with a convex groove (18). A convex part (19) is embedded and slidably connected inside the convex groove (18). The top of the convex part (19) is fixedly connected to the upper fixing plate (16). The bottom of the convex part (19) is fixedly connected to a first spring (21). The surface of the vertical column (17) is fitted with a second spring (22). Both ends of the second spring (22) are fixedly connected to the fixing plate (16). A round hole (24) is provided at the center of the middle plate (9). A turntable (25) is rotatably connected inside the round hole (24). The bottom of the turntable (25) is fixedly connected to the top of the stainless steel plate (8). The top of the turntable (25) is fixedly connected to a top plate (26).

2. A bridge spherical bearing according to claim 1, characterized in that: A sealing rubber ring (10) is provided at the top of the bottom basin (2) and near the edge, and the top of the sealing rubber ring (10) is in contact with the bottom of the middle plate (9).

3. A bridge spherical bearing according to claim 1, characterized in that: The support plate (1) and the top plate (26) are provided with first mounting holes (11) on their surfaces and near the four corners.

4. A bridge spherical bearing according to claim 1, characterized in that: The four side walls of the support plate (1) and the middle plate (9) are provided with positioning grooves (13) near the center. Positioning rods (14) are embedded in the interior of the positioning grooves (13), and one end of the positioning rods (14) is fixedly connected to the mounting plate (12).

5. A bridge spherical bearing according to claim 1, characterized in that: A damper (20) is fixedly connected inside the convex groove (18) and between the first springs (21), and the top of the damper (20) is fixedly connected to the bottom of the convex member (19).

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