Anti-separation friction pendulum bearing

Abstract

The utility model relates to the technical field of shock insulation, disclose a kind of anti-separation friction pendulum bearing, including upper seat plate and lower base, the upper seat plate is set to lower base top, and relative side is uniformly provided with spherical surface stainless steel plate, spherical cap lining board is provided between the upper seat plate and lower base, upper polytetrafluoroethylene plate is provided between the spherical cap lining board and upper seat plate, lower polytetrafluoroethylene plate is provided between the spherical cap lining board and lower base, shielding mechanism is provided between the upper seat plate and lower base;The spherical cap lining board includes upper spherical cap lining board and lower spherical cap lining board.In the utility model, by the cooperation of disc spring and spherical cap lining board, bearing can be automatically adjusted under the action of vertical load, ensure the close contact between bearing and upper and lower polytetrafluoroethylene plate, effectively realize horizontal displacement and anti-separation function, meanwhile, bearing passes through friction energy dissipation mechanism, significantly reduce the influence of earthquake or wind load on building structure, improve the overall seismic and stability.

Description

Technical Field

[0001] This utility model relates to the field of vibration isolation technology, and in particular to an anti-separation friction pendulum support. Background Technology

[0002] Friction pendulum bearings are widely used in engineering fields such as bridges, buildings, and seismic isolation systems. As a support device for bearing lateral or longitudinal forces, they can effectively mitigate structural deformation caused by temperature changes, earthquakes, or external forces. Their core principle is to absorb and dissipate energy transferred from the outside world through the adjustment of friction, ensuring the stability and safety of the structure under specific loads. Especially in seismic design, friction pendulum bearings play a crucial role, reducing the impact of vibrations on buildings and protecting the integrity of the main structure.

[0003] Existing friction pendulum bearings typically rely on rigid structures and fixed contact surfaces to transfer vertical loads and control horizontal slip. Under normal operating conditions, these structures can achieve a certain degree of seismic isolation and slip control. However, in practical engineering, especially when facing complex load combinations such as earthquakes, multi-directional wind forces, or non-uniform structural settlement, the bearing structure struggles to maintain continuous and tight contact with the sliding surface, leading to decreased slip efficiency or localized separation. Therefore, an anti-separation friction pendulum bearing is proposed to address these issues. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an anti-separation friction pendulum support, which aims to improve the problem in the prior art that the support structure is difficult to maintain a continuous and close contact with the sliding surface when facing complex load combinations such as earthquakes, multi-directional wind forces, or non-uniform structural settlement.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A friction-resistant anti-separation pendulum support includes an upper base plate and a lower base. The upper base plate is disposed on the top of the lower base, and spherical stainless steel plates are disposed on opposite sides. A spherical crown liner is disposed between the upper base plate and the lower base. An upper polytetrafluoroethylene plate is disposed between the spherical crown liner and the upper base plate. A lower polytetrafluoroethylene plate is disposed between the spherical crown liner and the lower base plate. A shielding mechanism is disposed between the upper base plate and the lower base.

[0007] The crown liner includes an upper crown liner and a lower crown liner. The upper crown liner is slidably connected to the side wall of the lower crown liner. The lower crown liner has multiple cavities inside. A disc spring is installed inside the outer cavity, a guide shaft is installed inside the outer cavity, and a central shaft is installed inside the middle cavity.

[0008] As a further description of the above technical solution:

[0009] One end of the disc spring is fixedly connected to the inside of the cavity, and the other end of the disc spring is fixedly connected to the side wall of the upper spherical crown liner. The disc spring is sleeved on the outside of the guide shaft.

[0010] As a further description of the above technical solution:

[0011] The guide shaft sidewall is slidably connected to the inside of the upper crown liner, and the central shaft sidewall is slidably connected to the inside of the upper crown liner.

[0012] As a further description of the above technical solution:

[0013] The shielding mechanism includes a rubber pad that surrounds the upper base plate and the lower base plate, and an extension strip is fixedly connected to the edge of the rubber pad.

[0014] As a further description of the above technical solution:

[0015] The extension bar is internally threaded with a fixing bolt, which is threaded into the upper base plate and the lower base.

[0016] As a further description of the above technical solution:

[0017] Both the upper base plate and the lower base are provided with mounting grooves. A connecting strip is fixedly connected to the side wall of the rubber pad, and the connecting strip is slidably connected inside the rubber pad.

[0018] As a further description of the above technical solution:

[0019] A connecting screw is provided between the upper base plate and the lower base, and a nut is threaded to the end of the connecting screw.

[0020] This utility model has the following beneficial effects:

[0021] 1. In this utility model, the combination of disc spring and spherical crown liner enables the support to automatically adjust under vertical load, ensuring close contact between the support and the upper and lower polytetrafluoroethylene plates, effectively realizing horizontal displacement and anti-separation functions. At the same time, the support significantly reduces the impact of earthquake or wind loads on the building structure through the friction energy dissipation mechanism, improving the overall seismic resistance and stability.

[0022] 2. In this utility model, the surrounding design of the rubber pad effectively isolates external debris, ensuring the cleanliness of the support interior. At the same time, the rubber pad has good elasticity, adapts to structural displacement, and ensures the stability of the shield. Furthermore, the cooperation between the extension strip and the fixing bolt improves the sealing performance, achieving the effect of preventing loosening and enhancing the overall reliability. Attached Figure Description

[0023] Figure 1This is a three-dimensional schematic diagram of an anti-separation friction pendulum support proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the spherical crown liner of an anti-separation friction pendulum support proposed in this utility model;

[0025] Figure 3 An exploded view of an anti-separation friction pendulum support proposed in this utility model;

[0026] Figure 4 This is a cross-sectional view of the upper spherical crown liner of an anti-separation friction pendulum support proposed in this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the rubber pad of the anti-separation friction pendulum support proposed in this utility model.

[0028] Legend:

[0029] 1. Upper seat plate; 2. Upper PTFE plate; 3. Upper crown liner plate; 4. Lower crown liner plate; 5. Lower PTFE plate; 6. Disc spring; 7. Guide shaft; 8. Spherical stainless steel plate; 9. Central shaft; 10. Lower base; 11. Connecting screw; 12. Nut; 13. Mounting groove; 14. Rubber pad; 15. Connecting strip; 16. Extension strip; 17. Fixing bolt. Detailed Implementation

[0030] 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.

[0031] Reference Figures 1-4This utility model provides an embodiment of an anti-separation friction pendulum support, comprising an upper base plate 1 and a lower base 10. The upper base plate 1 is disposed on top of the lower base 10, and spherical stainless steel plates 8 are disposed on opposite sides. The spherical stainless steel plates 8 can effectively reduce the coefficient of friction and improve the overall durability and stability of the support. A spherical crown liner is disposed between the upper base plate 1 and the lower base 10. The spherical crown liner can withstand a certain stress and deformation under the normal working condition of the support, ensuring the stable operation of the support and reducing the wear effect after long-term use. A spherical crown liner is disposed between the spherical crown liner and the upper base plate 1. An upper polytetrafluoroethylene (PTFE) plate 2 is provided, and a lower PTFE plate 5 is provided between the spherical crown liner and the lower base 10. The low friction characteristics of PTFE material can effectively reduce the sliding resistance between the two and extend the service life of the support. A shielding mechanism is provided between the upper base plate 1 and the lower base 10. The shielding mechanism can effectively prevent external debris from entering the support, ensure the long-term stable operation of the internal components, and prevent the interference of external substances from affecting the performance of the support. A connecting screw 11 is provided between the upper base plate 1 and the lower base 10, and a nut 12 is threaded to the end of the connecting screw 11.

[0032] The spherical crown liner includes an upper spherical crown liner 3 and a lower spherical crown liner 4. The upper spherical crown liner 3 is slidably connected to the side wall of the lower spherical crown liner 4, which can reduce local friction, reduce energy loss, and improve the overall working efficiency of the support. At the same time, the cooperation between the upper spherical crown liner 3 and the lower spherical crown liner 4 makes the support more flexible when subjected to external forces, adapting to dynamic loads of different directions and intensities. The lower spherical crown liner 4 has multiple cavities inside. A disc spring 6 is installed inside the outer cavity, a guide shaft 7 is installed inside the outer cavity, and a central shaft 9 is installed inside the middle cavity. One end of the disc spring 6 is fixedly connected to the cavity. The disc spring 6 is fixedly connected to the side wall of the upper spherical crown liner 3 at the other end, which can effectively absorb external impact force and quickly return to the initial state, thereby improving the seismic resistance of the support. The disc spring 6 is sleeved on the outside of the guide shaft 7, and the side wall of the guide shaft 7 is slidably connected to the inside of the upper spherical crown liner 3, which ensures the stability of the spherical crown liner when subjected to external force. The guide shaft 7 can evenly distribute the force inside the support, avoiding component wear or structural deformation caused by force concentration. The side wall of the central shaft 9 is slidably connected to the inside of the upper spherical crown liner 3, which enhances the overall load-bearing capacity of the support and ensures the working stability of the support under high load conditions.

[0033] Reference Figure 1 and Figure 5The shielding mechanism includes a rubber pad 14, which surrounds the upper base plate 1 and the lower base 10. This effectively prevents external debris from entering the support, thus protecting the internal components from contamination and ensuring long-term stable operation. The rubber pad 14 can deform with the displacement of the upper base plate 1 and the lower base 10. An extension strip 16 is fixedly connected to the edge of the rubber pad 14, further enhancing the sealing of the shielding mechanism. A fixing bolt 17 is threaded inside the extension strip 16 and is threaded inside the upper base plate 1 and the lower base 10 to prevent loosening or falling off during the operation of the support. Both the upper base plate 1 and the lower base 10 have mounting grooves 13 inside. A connecting strip 15 is fixedly connected to the side wall of the rubber pad 14 and slides inside the rubber pad 14, achieving the effect of initial positioning of the rubber pad 14.

[0034] Working principle: When earthquakes or wind loads occur, this support has horizontal displacement and anti-separation functions. When the support is vertically raised, due to the presence of disc spring 6, the upper spherical crown liner 3 is bounced up, so that the upper PTFE plate 2 and the lower PTFE plate 5 are in close contact with the upper and lower spherical stainless steel plates 8, which can provide horizontal displacement, frictional energy dissipation, and ensure building safety. When the support produces horizontal displacement, the PTFE plate and the spherical stainless steel plate 8 produce relative displacement, so that the concave and convex steps of the upper and lower spherical crown liner 4 interact, driving the upper spherical crown liner 3, the lower spherical crown liner 4, the guide shaft 7, the disc spring 6, and the upper and lower PTFE plates to move, frictional energy dissipation, and ensure building safety.

Claims

1. A friction-resistant anti-separation pendulum support, comprising an upper base plate (1) and a lower base plate (10), characterized in that: The upper seat plate (1) is located on the top of the lower base plate (10), and a spherical stainless steel plate (8) is provided on each of the opposite sides. A spherical crown liner is provided between the upper seat plate (1) and the lower base plate (10). An upper polytetrafluoroethylene plate (2) is provided between the spherical crown liner and the upper seat plate (1). A lower polytetrafluoroethylene plate (5) is provided between the spherical crown liner and the lower base plate (10). A shielding mechanism is provided between the upper seat plate (1) and the lower base plate (10). The crown liner includes an upper crown liner (3) and a lower crown liner (4). The upper crown liner (3) is slidably connected to the side wall of the lower crown liner (4). The lower crown liner (4) has multiple cavities inside. A disc spring (6) is installed inside the outer cavity. A guide shaft (7) is installed inside the outer cavity. A central shaft (9) is installed inside the middle cavity.

2. A friction pendulum seismic isolation support according to claim 1, wherein: One end of the disc spring (6) is fixedly connected to the inside of the cavity, and the other end of the disc spring (6) is fixedly connected to the side wall of the upper spherical crown liner (3). The disc spring (6) is sleeved on the outside of the guide shaft (7).

3. A friction pendulum seismic isolation support according to claim 2, wherein: The guide shaft (7) is slidably connected to the inside of the upper crown liner (3), and the central shaft (9) is slidably connected to the inside of the upper crown liner (3).

4. A friction pendulum seismic isolation support according to claim 3, wherein: The shielding mechanism includes a rubber pad (14) that surrounds the upper seat plate (1) and the lower base plate (10), and an extension strip (16) is fixedly connected to the edge of the rubber pad (14).

5. A friction pendulum seismic isolation support according to claim 4, wherein: The extension bar (16) is internally threaded with a fixing bolt (17), which is threaded inside the upper base plate (1) and the lower base (10).

6. The anti-separation friction pendulum support according to claim 5, characterized in that: The upper base plate (1) and the lower base plate (10) are both provided with mounting grooves (13). A connecting strip (15) is fixedly connected to the side wall of the rubber pad (14). The connecting strip (15) is slidably connected inside the rubber pad (14).

7. A non-separable friction pendulum bearing according to claim 1, wherein: A connecting screw (11) is provided between the upper base plate (1) and the lower base (10), and a nut (12) is threaded to the end of the connecting screw (11).

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