Friction pendulum bearing

Abstract

The utility model discloses a kind of friction pendulum supports, including bottom mounting plate, the top surface of the bottom mounting plate is fixedly provided with lower seat plate, the upper spherical surface of middle seat plate is sliding surface, install sliding plate wear plate after cooperation with the mirror surface stainless steel plate of upper seat plate, it is ensured that support is smooth in horizontal direction on sliding.The sliding design can effectively release the displacement of structure in horizontal direction, reduce the damage of earthquake and other dynamic effect to structure.By setting anti-falling beam boss in the upper and lower spherical surface center position of middle seat plate, and setting anti-falling beam boss avoidance area groove and anti-falling beam boss avoidance area and groove side wall in the corresponding position of upper seat plate and lower seat plate, a set of reliable anti-falling beam protection device is formed.When earthquake reaches or exceeds maximum design displacement, anti-falling beam boss and groove side wall contact, effectively limit the relative displacement of upper seat plate and lower seat plate, prevent bridge structure from falling off, greatly improve the safety of building and bridge under extreme conditions such as earthquake.

Description

Technical Field

[0001] This utility model relates to the field of seismic isolation and damping technology for bridges and buildings, specifically a friction pendulum bearing. Background Technology

[0002] Friction pendulum bearings are widely used in building and bridge engineering due to their excellent seismic isolation performance, large load-bearing capacity, large displacement capacity, self-resetting ability, and long service life. However, when an earthquake occurs, the friction pendulum bearing will reach the seismic displacement. Since earthquakes are unpredictable, the actual seismic displacement may exceed the maximum design seismic displacement of the friction pendulum bearing, causing the upper and lower bearing plates of the friction pendulum bearing to separate, resulting in the failure of the seismic isolation function of the friction pendulum bearing and causing the bridge to collapse. Utility Model Content

[0003] The purpose of this utility model is to provide a friction pendulum bearing to address the issue raised in the background art. Friction pendulum bearings, with their excellent seismic isolation performance, large load-bearing capacity, large displacement capacity, self-resetting capability, and long service life, have been widely used in the fields of building and bridge engineering. However, when an earthquake occurs, the friction pendulum bearing will reach the seismic displacement. Due to the unpredictability of earthquakes, the actual seismic displacement may exceed the maximum design seismic displacement of the friction pendulum bearing, causing the upper and lower bearing plates of the friction pendulum bearing to separate, resulting in the failure of the seismic isolation function of the friction pendulum bearing and causing the bridge to collapse.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a friction pendulum support, comprising a bottom mounting plate, a lower seat plate fixedly disposed on the top surface of the bottom mounting plate, a middle seat plate snapped onto the top of the lower seat plate, an upper seat plate fastened to the top surface of the middle seat plate, a fixed top plate horizontally fixedly disposed on the top of the upper seat plate, fixed through holes symmetrically formed on the top surfaces of the bottom mounting plate and the fixed top plate, a rotating wear-resistant plate mounting area formed on the top of the lower seat plate, a lower wear-resistant spherical surface fixedly disposed on the inner side of the rotating wear-resistant plate mounting area, and the rotating wear-resistant plate mounting area... An anti-fall beam protrusion clearance area is provided on the inner side. A groove sidewall is fixedly provided on the inner side of the anti-fall beam protrusion clearance area. An upper wear-resistant spherical surface is fixedly provided on the bottom surface of the upper seat plate. A groove for the anti-fall beam protrusion clearance area is provided on the bottom surface of the upper seat plate. A groove sidewall is fixedly provided on the inner side of the groove for the anti-fall beam protrusion clearance area. A lower spherical surface is fixedly provided on the bottom surface of the middle seat plate. An upper spherical surface is fixedly provided on the top surface of the middle seat plate. A sliding wear-resistant plate installation area is provided on the top surface of the middle seat plate. Anti-fall beam protrusions are symmetrically fixed on the top and bottom surfaces of the middle seat plate.

[0005] Preferably, the bottom end of the lower seat plate is fixedly connected to the center of the top surface of the bottom mounting plate, and the middle seat plate is a disc shape with upper and lower arc surfaces, and the middle seat plate is horizontally positioned between the top surface of the lower seat plate and the bottom surface of the upper seat plate.

[0006] Preferably, the upper seat plate and the lower seat plate are arranged in parallel and superimposed on each other, the top of the upper seat plate is fixedly located at the center of the bottom surface of the fixed top plate, and the fixed top plate and the bottom mounting plate are arranged in parallel and superimposed on each other.

[0007] Preferably, the fixed through holes are symmetrically and through-holes located near the four corners on the top surface of the bottom mounting plate and the fixed top plate. The rotating wear-resistant plate mounting area is set in a bowl-shaped groove structure, and the lower wear-resistant spherical surface is set in an arc-shaped ring structure, with the top surface of the lower wear-resistant spherical surface connected to the bottom surface of the lower spherical surface.

[0008] Preferably, the anti-fall beam protrusion clearance area is located at the inner center of the rotating wear-resistant plate installation area, the upper wear-resistant spherical surface is fixedly installed inside the bowl-shaped arc groove on the bottom surface of the upper seat plate, and the bottom surface of the upper wear-resistant spherical surface is connected to the top surface of the upper spherical surface, and the anti-fall beam protrusion clearance area groove is located at the center of the bowl-shaped groove on the bottom surface of the upper seat plate.

[0009] Preferably, the upper spherical surface is fixedly installed on the top surface of the middle seat plate near the center position, and the upper spherical surface is arranged in an annular shape. The sliding wear-resistant plate installation area is arranged in an annular shape on the outer side of the upper spherical surface. The anti-fall beam protrusions are symmetrically fixedly installed at the center positions of the top and bottom surfaces of the middle seat plate, and one end of each anti-fall beam protrusion is correspondingly engaged with the groove of the anti-fall beam protrusion clearance area and the inner side of the anti-fall beam protrusion clearance area.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] This friction pendulum bearing features an upper plate with a significantly larger spherical radius than the lower plate during daily use. This design allows the upper plate to primarily handle sliding, while the lower plate primarily handles rotation. During normal use and earthquakes, the lower plate can rotate freely to accommodate minor structural rotations, ensuring excellent overall rotational performance of the bearing, reducing additional stress caused by restricted rotation, and extending the structure's service life. The connections and fits between the upper, middle, and lower plates, the bottom mounting plate, and the fixed top plate are rationally designed. All components are tightly connected through snap-fit, fastening, and fixing methods, ensuring the overall structural stability of the bearing. Meanwhile, the shape and size of each component have been carefully calculated and optimized to withstand large loads and displacements, meeting the requirements of building and bridge engineering. The sliding surface of the upper seat plate is a spherical structure, with a stainless steel plate welded to the spherical surface, forming a sliding friction pair with the sliding wear-resistant plate installed on the spherical surface of the middle seat plate. The upper spherical surface of the middle seat plate is the sliding surface. After the sliding wear-resistant plate is installed, it cooperates with the mirror stainless steel plate of the upper seat plate to ensure smooth sliding of the support in the horizontal direction. This sliding design can effectively release the displacement of the structure in the horizontal direction and reduce the damage to the structure caused by dynamic forces such as earthquakes. By setting anti-fall beam protrusions at the center of the upper and lower spherical surfaces of the middle seat plate, and setting anti-fall beam protrusion clearance area grooves and anti-fall beam protrusion clearance area and groove sidewalls at corresponding positions on the upper and lower seat plates, a reliable anti-fall beam protection device is formed. When an earthquake reaches or exceeds the maximum design displacement, the anti-fall beam protrusion contacts the sidewall of the groove, effectively limiting the relative displacement of the upper and lower seat plates, preventing the bridge and other structures from falling off, and greatly improving the safety of buildings and bridges in extreme situations such as earthquakes. Attached Figure Description

[0012] Figure 1 This is a three-dimensional front view of the overall installation of this utility model;

[0013] Figure 2 This is a three-dimensional bottom view of the overall installation of this utility model;

[0014] Figure 3 This is a perspective view of the lower base plate of this utility model;

[0015] Figure 4 This is a three-dimensional structural diagram of the upper seat plate of this utility model;

[0016] Figure 5 This is a three-dimensional structural diagram of the middle seat plate of this utility model.

[0017] In the diagram: 1. Bottom mounting plate; 2. Lower seat plate; 3. Middle seat plate; 4. Upper seat plate; 5. Fixed top plate; 6. Fixed through hole; 7. Rotating wear-resistant plate installation area; 8. Lower wear-resistant spherical surface; 9. Anti-fall beam boss clearance area; 10. Groove sidewall one; 11. Upper wear-resistant spherical surface; 12. Anti-fall beam boss clearance area groove; 13. Groove sidewall two; 14. Lower spherical surface; 15. Upper spherical surface; 16. Sliding wear-resistant plate installation area; 17. Anti-fall beam boss. Detailed Implementation

[0018] 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.

[0019] Example 1:

[0020] like Figure 1-5 As shown, this utility model provides a technical solution: a friction pendulum support, including a bottom mounting plate 1, a lower seat plate 2 fixedly disposed on the top surface of the bottom mounting plate 1, a middle seat plate 3 snapped onto the top of the lower seat plate 2, an upper seat plate 4 fastened to the top surface of the middle seat plate 3, and the bottom end of the lower seat plate 2 fixedly connected to the center of the top surface of the bottom mounting plate 1. The middle seat plate 3 is a disc-shaped structure with upper and lower arc surfaces, and is horizontally disposed between the top surface of the lower seat plate 2 and the bottom surface of the upper seat plate 4. A fixed top plate 5 is horizontally fixedly disposed at the top of the upper seat plate 4. The upper seat plate 4 and the lower seat plate 2 are stacked and arranged in parallel. The upper base plate 4 is fixedly positioned at the center of the bottom surface of the fixed top plate 5, and the fixed top plate 5 and the bottom mounting plate 1 are arranged in parallel and superimposed on each other. The top surfaces of the bottom mounting plate 1 and the fixed top plate 5 are symmetrically provided with fixed through holes 6. The top of the lower base plate 2 is provided with a rotating wear-resistant plate mounting area 7. The fixed through holes 6 are symmetrically provided through the top surfaces of the bottom mounting plate 1 and the fixed top plate 5 near the four corners. The rotating wear-resistant plate mounting area 7 is provided with a bowl-shaped groove structure. The lower wear-resistant spherical surface 8 is provided with an arc-shaped ring structure, and the top surface of the lower wear-resistant spherical surface 8 is connected to the bottom surface of the lower spherical surface 14.

[0021] With the spherical radius of the upper plate 4 being much larger than that of the lower plate 2, this design allows the upper plate 4 to primarily perform the sliding function, while the lower plate 2 primarily performs the rotation function. During normal use and earthquakes, the lower plate 2 can rotate flexibly to accommodate the structure's minute rotational requirements.

[0022] Example 2:

[0023] like Figure 1-5As shown, this utility model provides a technical solution: a friction pendulum support, including a bottom mounting plate 1, a lower seat plate 2 fixedly disposed on the top surface of the bottom mounting plate 1, a middle seat plate 3 snapped onto the top of the lower seat plate 2, an upper seat plate 4 fastened to the top surface of the middle seat plate 3, and the bottom end of the lower seat plate 2 fixedly connected to the center of the top surface of the bottom mounting plate 1. The middle seat plate 3 is a disc-shaped structure with upper and lower arc surfaces, and is horizontally disposed between the top surface of the lower seat plate 2 and the bottom surface of the upper seat plate 4. A fixed top plate 5 is horizontally fixed to the top of the upper seat plate 4. The upper seat plate 4 and the lower seat plate 2 are arranged in parallel and stacked. The top of the upper seat plate 4 is fixed at the center of the bottom surface of the fixed top plate 5. The fixed top plate 5 and the bottom mounting plate 1 are arranged in parallel and stacked. Fixed through holes 6 are symmetrically opened on the top surfaces of the bottom mounting plate 1 and the fixed top plate 5. A rotating wear-resistant plate mounting area 7 is opened at the top of the lower seat plate 2. A lower wear-resistant plate is fixedly installed on the inner side of the rotating wear-resistant plate mounting area 7. The wear-resistant spherical surface 8 and the fixed through holes 6 are symmetrically and continuously opened on the top surfaces of the bottom mounting plate 1 and the fixed top plate 5 near the four corners. The rotating wear-resistant plate mounting area 7 is set with a bowl-shaped groove structure. The lower wear-resistant spherical surface 8 is set with an arc-shaped ring structure, and the top surface of the lower wear-resistant spherical surface 8 is connected to the bottom surface of the lower spherical surface 14. The inner side of the rotating wear-resistant plate mounting area 7 is provided with an anti-fall beam protrusion clearance area 9. The inner side of the anti-fall beam protrusion clearance area 9 is fixed with a groove sidewall 10. The bottom surface of the upper seat plate 4 is fixedly provided with an upper wear-resistant spherical surface 11. The bottom surface of the upper seat plate 4 is provided with a groove 12 for the anti-fall beam boss clearance area 9. The anti-fall beam boss clearance area 9 is located at the inner center of the rotating wear-resistant plate installation area 7. The upper wear-resistant spherical surface 11 is fixedly provided inside the bowl-shaped arc groove on the bottom surface of the upper seat plate 4, and the bottom surface of the upper wear-resistant spherical surface 11 is connected to the top surface of the upper spherical surface 15. The groove 12 for the anti-fall beam boss clearance area is located at the center of the bowl-shaped groove on the bottom surface of the upper seat plate 4.

[0024] The upper seat plate 4 has a spherical sliding surface with a stainless steel plate welded to it. This spherical surface, together with the wear-resistant sliding plate mounted on the spherical surface of the middle seat plate 3, forms a sliding friction pair. The upper spherical surface of the middle seat plate 3 is the sliding surface. After the wear-resistant sliding plate is installed, it cooperates with the mirror stainless steel plate of the upper seat plate 4 to ensure smooth sliding of the support in the horizontal direction.

[0025] Example 3:

[0026] like Figure 1-5As shown, this utility model provides a technical solution: a friction pendulum support, including a bottom mounting plate 1, a lower seat plate 2 fixedly disposed on the top surface of the bottom mounting plate 1, a middle seat plate 3 snapped onto the top of the lower seat plate 2, an upper seat plate 4 fastened to the top surface of the middle seat plate 3, and the bottom end of the lower seat plate 2 fixedly connected to the center of the top surface of the bottom mounting plate 1. The middle seat plate 3 is a disc-shaped structure with upper and lower arc surfaces, and is horizontally disposed between the top surface of the lower seat plate 2 and the bottom surface of the upper seat plate 4. A fixed top plate 5 is horizontally fixedly disposed on the top of the upper seat plate 4. The upper seat plate 4 and the lower seat plate 2 are arranged in parallel and stacked, and the top of the upper seat plate 4 is fixedly disposed on the bottom surface of the fixed top plate 5. The top plate 5 and the bottom mounting plate 1 are arranged in parallel and stacked on top of each other. The top surfaces of the bottom mounting plate 1 and the top plate 5 are symmetrically provided with fixing through holes 6. The top of the lower base plate 2 has a rotating wear-resistant plate mounting area 7. A lower wear-resistant spherical surface 8 is fixedly installed on the inner side of the rotating wear-resistant plate mounting area 7. The fixing through holes 6 are symmetrically and penetratingly located near the four corners of the top surfaces of the bottom mounting plate 1 and the top plate 5. The rotating wear-resistant plate mounting area 7 has a bowl-shaped groove structure, and the lower wear-resistant spherical surface 8 has an arc-shaped ring structure. The top surface of the lower wear-resistant spherical surface 8 is connected to the bottom surface of the lower spherical surface 14. An anti-fall beam protrusion is provided on the inner side of the rotating wear-resistant plate mounting area 7 to prevent air leakage. Area 9, the inner side of the anti-fall beam protrusion clearance area 9 is fixedly provided with a grooved sidewall 10, the bottom surface of the upper seat plate 4 is fixedly provided with an upper wear-resistant spherical surface 11, the bottom surface of the upper seat plate 4 is provided with an anti-fall beam protrusion clearance area groove 12, the anti-fall beam protrusion clearance area 9 is opened at the inner center of the rotating wear-resistant plate installation area 7, the upper wear-resistant spherical surface 11 is fixedly installed inside the bowl-shaped arc groove on the bottom surface of the upper seat plate 4, and the bottom surface of the upper wear-resistant spherical surface 11 is connected to the top surface of the upper spherical surface 15, the anti-fall beam protrusion clearance area groove 12 is opened at the center of the bowl-shaped groove on the bottom surface of the upper seat plate 4, the inner side of the anti-fall beam protrusion clearance area groove 12 is fixedly provided with a grooved sidewall 13, the middle seat plate The bottom surface of the middle seat plate 3 is fixedly provided with a lower spherical surface 14, the top surface of the middle seat plate 3 is fixedly provided with an upper spherical surface 15, the top surface of the middle seat plate 3 is provided with a sliding wear-resistant plate installation area 16, the top and bottom surfaces of the middle seat plate 3 are symmetrically fixedly provided with anti-fall beam protrusions 17, the upper spherical surface 15 is fixedly provided near the center of the top surface of the middle seat plate 3 and the upper spherical surface 15 is arranged in a ring shape, the sliding wear-resistant plate installation area 16 is arranged in a ring shape on the outer side of the upper spherical surface 15, the anti-fall beam protrusions 17 are symmetrically fixedly provided at the center of the top and bottom surfaces of the middle seat plate 3, and one end of the anti-fall beam protrusions 17 is correspondingly engaged with the groove 12 of the anti-fall beam protrusion clearance area and the inner side of the anti-fall beam protrusion clearance area 9.

[0027] By setting anti-fall beam protrusions 17 at the center of the upper and lower spherical surfaces of the middle seat plate 3, and setting anti-fall beam protrusion clearance area grooves 12 and anti-fall beam protrusion clearance area 9 and groove sidewalls at corresponding positions on the upper seat plate 4 and lower seat plate 2, a reliable anti-fall beam protection device is formed.

[0028] Working principle: The bottom mounting plate 1 is placed at the designated support position of the building or bridge. Using the symmetrically opened fixing through holes 6 on its top surface, the bottom mounting plate 1 is securely installed on the foundation using bolts and other fasteners. Next, the lower mounting plate 2, middle mounting plate 3, upper mounting plate 4, and fixed top plate 5 are installed in sequence. The bottom end of the lower mounting plate 2 is fixedly connected to the center of the top surface of the bottom mounting plate 1. A lower wear-resistant spherical surface 8 is fixedly installed within the rotating wear-resistant plate mounting area 7 at its top, and a grooved sidewall 10 is located within the anti-fall beam protrusion clearance area 9 on its inner side. The middle mounting plate 3 is a disc-shaped plate with upper and lower arc surfaces, placed horizontally between the top surface of the lower mounting plate 2 and the bottom surface of the upper mounting plate 4. The lower spherical surface 14 of its bottom surface abuts against the top surface of the lower wear-resistant spherical surface 8, and the upper spherical surface 15 of its top surface abuts against the upper wear-resistant spherical surface 11 of the bottom surface of the upper mounting plate 4. The top and bottom surfaces of the middle seat plate 3 are symmetrically and fixedly provided with anti-fall beam protrusions 17, which are respectively engaged in the anti-fall beam protrusion clearance area 9 and the anti-fall beam protrusion clearance area groove 12 opened on the bottom surface of the upper seat plate 4. The groove has a groove sidewall 13. The upper seat plate 4 is fastened to the top surface of the middle seat plate 3, and its top end is fixedly set at the center of the bottom surface of the fixed top plate 5. The fixed top plate 5 and the bottom mounting plate 1 are arranged in parallel and superimposed on each other, and the top surface of the fixed top plate 5 is also symmetrically provided with fixing through holes 6 for connecting and fixing to the superstructure. Under normal use, the load of the building or bridge is transferred to the upper seat plate 4 through the fixed top plate 5, and then transferred to the bottom mounting plate 1 and the foundation through the sliding friction pair between the upper seat plate 4 and the middle seat plate 3, which consists of the stainless steel plate welded to the spherical surface of the upper seat plate 4 and the sliding wear-resistant plate installed on the upper spherical surface of the middle seat plate 3, and the rotational friction pair between the middle seat plate 3 and the lower seat plate 2, which consists of the mirror stainless steel plate welded to the lower spherical surface of the middle seat plate 3 and the rotational wear-resistant plate in the installation area 7 of the rotational wear-resistant plate of the lower seat plate 2. The upper support plate 4 primarily functions as a sliding support, with a spherical radius much larger than that of the lower support plate 2, allowing for smoother sliding. The lower support plate 2 primarily functions as a rotation support, ensuring the support can adapt to the minor rotational needs of the structure. During an earthquake, buildings or bridges experience significant displacement and vibration. The upper support plate 4 and lower support plate 2 will move relative to each other. When the middle support plate 3 reaches its maximum design seismic displacement due to the relative movement of the upper and lower support plates 4 and 2, the anti-falling beam protrusions 17 on the top and bottom surfaces of the middle support plate 3 will contact the groove sidewall 13 of the anti-falling beam protrusion clearance area 12 of the upper support plate 4 and the groove sidewall 10 of the anti-falling beam protrusion clearance area 9 of the lower support plate 2, respectively. This contact limits further relative displacement between the upper support plate 4 and lower support plate 2, preventing separation and thus providing anti-falling beam protection to ensure that bridges and other structures do not detach due to support failure.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A friction pendulum support, comprising a base mounting plate (1), characterized in that: The bottom mounting plate (1) is fixedly provided with a lower seat plate (2) on its top surface. The top of the lower seat plate (2) is snapped with a middle seat plate (3). The top of the middle seat plate (3) is fastened with an upper seat plate (4). The top of the upper seat plate (4) is horizontally fixed with a fixed top plate (5). The top surfaces of the bottom mounting plate (1) and the fixed top plate (5) are symmetrically provided with fixed through holes (6). The top of the lower seat plate (2) is provided with a rotating wear-resistant plate mounting area (7). The inner side of the rotating wear-resistant plate mounting area (7) is fixedly provided with a lower wear-resistant spherical surface (8). The inner side of the rotating wear-resistant plate mounting area (7) is provided with a non-falling beam protrusion clearance area (9). A grooved sidewall (10) is fixedly provided on the inner side of the platform clearance area (9). An upper wear-resistant spherical surface (11) is fixedly provided on the bottom surface of the upper seat plate (4). A groove (12) for the clearance area of ​​the anti-fall beam protrusion is opened on the bottom surface of the upper seat plate (4). A grooved sidewall (13) is fixedly provided on the inner side of the groove (12) for the clearance area of ​​the anti-fall beam protrusion. A lower spherical surface (14) is fixedly provided on the bottom surface of the middle seat plate (3). An upper spherical surface (15) is fixedly provided on the top surface of the middle seat plate (3). A sliding wear-resistant plate installation area (16) is opened on the top surface of the middle seat plate (3). Anti-fall beam protrusions (17) are symmetrically fixedly provided on the top and bottom surfaces of the middle seat plate (3).

2. The friction pendulum support according to claim 1, characterized in that: The bottom end of the lower seat plate (2) is fixedly connected to the center of the top surface of the bottom mounting plate (1). The middle seat plate (3) is a disc-shaped plate with upper and lower arc surfaces, and the middle seat plate (3) is horizontally positioned between the top surface of the lower seat plate (2) and the bottom surface of the upper seat plate (4).

3. A friction pendulum support according to claim 1, characterized in that: The upper seat plate (4) and the lower seat plate (2) are arranged in parallel and superimposed on each other. The top of the upper seat plate (4) is fixedly set at the center of the bottom surface of the fixed top plate (5), and the fixed top plate (5) and the bottom mounting plate (1) are arranged in parallel and superimposed on each other.

4. A friction pendulum support according to claim 1, characterized in that: The fixed through holes (6) are symmetrically and through the top surface of the bottom mounting plate (1) and the fixed top plate (5) near the four corners. The rotating wear-resistant plate mounting area (7) is set in a bowl-shaped groove structure. The lower wear-resistant spherical surface (8) is set in an arc-shaped ring structure, and the top surface of the lower wear-resistant spherical surface (8) is connected to the bottom surface of the lower spherical surface (14).

5. A friction pendulum support according to claim 1, characterized in that: The anti-fall beam protrusion clearance area (9) is located at the inner center of the rotating wear-resistant plate installation area (7). The upper wear-resistant spherical surface (11) is fixedly installed inside the bowl-shaped arc groove on the bottom surface of the upper seat plate (4), and the bottom surface of the upper wear-resistant spherical surface (11) is connected to the top surface of the upper spherical surface (15). The anti-fall beam protrusion clearance area groove (12) is located at the center of the bowl-shaped groove on the bottom surface of the upper seat plate (4).

6. A friction pendulum support according to claim 1, characterized in that: The upper spherical surface (15) is fixedly set on the top surface of the middle seat plate (3) near the center position, and the upper spherical surface (15) is set in an annular shape. The sliding wear-resistant plate installation area (16) is set in an annular shape on the outer side of the upper spherical surface (15). The anti-fall beam protrusion (17) is symmetrically fixedly set on the center position of the top and bottom surfaces of the middle seat plate (3), and one end of the anti-fall beam protrusion (17) is correspondingly snapped into the groove (12) of the anti-fall beam protrusion clearance area and the inner side of the anti-fall beam protrusion clearance area (9).

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