Anti-separation friction pendulum shock insulation support

Abstract

The invention discloses an anti-separation friction pendulum shock insulation support, and belongs to the technical field of shock insulation, the anti-separation friction pendulum shock insulation support comprises a friction pendulum assembly, a fixed connecting assembly and a connecting cover plate, the top end of the friction pendulum assembly and the connecting cover plate are correspondingly provided with a plurality of first connecting holes and mounting holes, and connecting bolts are arranged in the first connecting holes; the connecting cover plate is fixed to the top end of the friction pendulum assembly through a connecting bolt, a cylindrical pin is arranged in a mounting hole in the connecting cover plate and sleeved with a spring, one end of the spring abuts against the bottom end of the connecting cover plate, the other end of the spring abuts against the top end of the friction pendulum assembly, and the side face of the connecting cover plate is connected with the friction pendulum assembly through a fixed connecting assembly. The spring and the connecting cover plate are arranged and matched with each other to effectively resist the destructive effect of vertical force, it is guaranteed that the whole shock insulation support can be effectively reset through the spring after bearing vertical loads, and the influence of earthquake force on the support is reduced.

Description

Technical Field

[0001] The present invention belongs to the technical field of seismic isolation, and particularly relates to a friction pendulum seismic isolation bearing for preventing separation. Background Art

[0002] A friction pendulum seismic isolation bearing is a seismic isolation bearing that extends the vibration period of a structure through spherical swinging and dissipates seismic energy through friction at the sliding interface to achieve the seismic isolation function. Due to its high vertical bearing capacity, controllable processing accuracy, and self-centering ability after an earthquake, the friction pendulum seismic isolation bearing is widely used in related industries such as bridges and buildings.

[0003] In actual engineering applications, under the action of rare earthquakes, the inertial force generated by a building structure due to strong horizontal seismic action acts on the centroid, forming a couple with the base reaction force, thereby generating an overturning moment. When the overturning moment is too large, the stress situation of the seismic isolation bearings in the structure becomes extremely complex. The overturning moment causes the structure to rotate around the base, resulting in an increase in compression on one side of the seismic isolation bearing and tension on the other side; the difference in the lever arm of the bearing from the center of rotation will also cause uneven stress distribution, and the edge bearings may bear tension. Since the currently common friction pendulum seismic isolation bearings can only bear compression and not tension, this situation will have a greater adverse impact; therefore, how to provide a friction pendulum seismic isolation bearing for preventing separation is an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0004] The main object of the present invention is to provide a friction pendulum seismic isolation bearing for preventing separation to solve the above technical problems. The device is provided with a spring and a connecting cover plate, which can cooperate with each other to effectively resist the destructive action of vertical forces, and ensure that the overall seismic isolation bearing can be effectively reset by using the spring after bearing vertical loads, reducing the impact of seismic forces on the bearing.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A friction pendulum seismic isolation bearing for preventing separation, comprising a friction pendulum assembly, a fixed connection assembly, and a connecting cover plate. A plurality of first connection holes and mounting holes are correspondingly provided at the top of the friction pendulum assembly and on the connecting cover plate. Connecting bolts are arranged in the first connection holes, and the connecting cover plate is fixedly connected to the friction pendulum assembly through the connecting bolts. A cylindrical pin is arranged in the mounting hole on the connecting cover plate, and a spring is sleeved on the cylindrical pin. One end of the spring abuts against the bottom end of the connecting cover plate, and the other end abuts against the top end of the friction pendulum assembly. The side surface of the connecting cover plate is connected to the friction pendulum assembly through the fixed connection assembly.

[0007] Further, the connecting cover plate is a rectangular plate, and the first connection holes and mounting holes on the friction pendulum assembly and the connecting cover plate are circumferentially and arrayedly distributed relative to the center position of the top end of the connecting cover plate.

[0008] Further, the friction pendulum assembly includes a spherical crown body assembly, an upper seat plate, and a lower seat plate. Both the upper seat plate and the lower seat plate are cylindrical structures. Concave spherical surfaces are provided on the sides of the upper seat plate and the lower seat plate that are close to each other. Arc-shaped friction plates are fixedly arranged within the concave spherical surfaces of the upper seat plate and the lower seat plate. The side of the upper seat plate with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. The circumferences of the upper seat plate and the lower seat plate are connected by a sealing ring. Both ends of the sealing ring are fixed to the upper seat plate and the lower seat plate respectively by two pipe clamps. Multiple first connection holes and mounting holes are provided at the top end of the upper seat plate. The upper seat plate is connected to the connection cover plate through the first connection holes and the mounting holes. Multiple fixed connection components are arranged circumferentially on the lower seat plate. One end of the fixed connection component is fixed to the side surface of the lower seat plate, and the other end of the fixed connection component is fixed to the side surface of the connection cover plate.

[0009] Further, the connection cover plate includes an upper connection plate and a side connection plate. Mounting holes are correspondingly provided on the upper connection plate and the friction pendulum assembly, and the mounting holes are circumferentially arrayed relative to the center position of the connection cover plate. First connection holes are correspondingly provided on the friction pendulum assembly and the side connection plate, and the first connection holes are located in the radial direction of the friction pendulum assembly. The upper connection plate and the side connection plate are both connected to the friction pendulum assembly.

[0010] Further, the friction pendulum assembly includes a spherical crown body assembly, an upper seat plate, and a lower seat plate. Concave spherical surfaces are provided on the sides of the upper seat plate and the lower seat plate that are close to each other. The upper seat plate is a cuboid structure, and the lower seat plate is a cylindrical structure. Arc-shaped friction plates are fixedly arranged within the concave spherical surfaces of the upper seat plate and the lower seat plate. The side of the upper seat plate with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. Multiple first connection holes are provided at the top end of the upper seat plate. The upper seat plate is connected to the upper connection plate through the first connection holes. Multiple mounting holes are provided on the sides of the upper seat plate. The upper seat plate is connected to the side connection plate through the mounting holes. Multiple fixed connection components are arranged circumferentially on the lower seat plate. One end of the fixed connection component is fixed to the side surface of the lower seat plate, and the other end of the fixed connection component is fixed to the side surface of the side connection plate.

[0011] Further, the fixed connection component includes a fixing plate. Multiple second connection holes are provided at both ends of the fixing plate. One end of the fixing plate is fixedly connected to the side surface of the lower seat plate through the second connection holes and fixing bolts, and the other end of the fixing plate is fixedly connected to the side surface of the connection cover plate through the second connection holes and fixing bolts.

[0012] Further, the spherical crown body assembly includes a spherical crown body and two spherical crown body friction plates. Both ends of the spherical crown body are fixedly connected with spherical crown body friction plates, and one sides of the two spherical crown body friction plates away from the spherical crown body are respectively abutted against the arc surface friction plates arranged on the upper seat plate and the lower seat plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the present invention, a spring and a connecting cover plate are provided. The two cooperate with each other to effectively resist the destructive effect of vertical forces, and ensure that the overall seismic isolation bearing can be effectively reset by the spring after bearing vertical loads, reducing the influence of seismic forces on the bearing;

[0015] 2. The present invention can achieve the function of a tensile friction pendulum bearing, but has a lower cost compared with a tensile friction pendulum;

[0016] 3. The present invention can bear both pressure and tension, broadening the application range of the friction pendulum seismic isolation bearing;

[0017] 4. The present invention can greatly improve the reliability of the friction pendulum seismic isolation bearing and the structural safety. Even under the action of rare earthquakes, no large damage will occur;

[0018] 5. In the current anti-separation seismic isolation bearing, most of the anti-separation devices are arranged in the center of the spherical crown. When the bearing undergoes large displacements, the spherical crown is prone to damage. In the present invention, the anti-separation device is arranged on the top of the upper cover plate. When the bearing undergoes displacement, the anti-separation device and the upper base can slide simultaneously, breaking through the limitation of inapplicability under large displacements. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a front cross-sectional structural schematic diagram of the present invention.

[0022] Figure 3 It is a side cross-sectional structural schematic diagram of the present invention.

[0023] Figure 4 It is an internal structural schematic diagram of the present invention.

[0024] Figure 5 It is a structural schematic diagram of the connecting cover plate.

[0025] Figure 6 It is a schematic structural diagram of the second connecting cover plate.

[0026] Figure 7 It is a schematic front sectional structural diagram of the second connecting cover plate.

[0027] Figure 8 It is a schematic internal structural diagram of the second connecting cover plate.

[0028] Wherein, 1 - lower seat plate, 2 - sealing ring, 3 - upper seat plate, 4 - connecting cover plate, 4.1 - upper connecting plate, 4.2 - side connecting plate, 5 - spherical crown body, 6 - spherical crown body friction plate, 7 - spring, 8 - fixing plate, 9 - connecting bolt. Specific implementation manners

[0029] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0030] Embodiment 1:

[0031] As Figures 1 to 5 shown, the present invention provides an anti-separation friction pendulum isolation bearing, including a friction pendulum assembly, a fixed connection assembly, and a connecting cover plate 4. A plurality of first connection holes and mounting holes are correspondingly arranged at the top of the friction pendulum assembly and on the connecting cover plate 4. A connecting bolt 9 is arranged in the first connection hole, and the connecting cover plate 4 is fixed to the top of the friction pendulum assembly through the connecting bolt 9. A cylindrical pin is arranged in the mounting hole on the connecting cover plate 4, and a spring 7 is sleeved on the cylindrical pin. One end of the spring 7 abuts against the bottom end of the connecting cover plate 4, and the other end abuts against the top end of the friction pendulum assembly. The side of the connecting cover plate 4 is connected to the friction pendulum assembly through the fixed connection assembly. The spring 7 is a disc spring for providing elastic force.

[0032] In this embodiment, the connecting cover plate 4 is a rectangular plate, and the first connection holes and mounting holes on the friction pendulum assembly and the connecting cover plate 4 are circumferentially and arrayedly distributed relative to the central position of the top end of the connecting cover plate 4.

[0033] In this embodiment, the friction pendulum assembly includes a spherical crown body assembly, an upper seat plate 3, and a lower seat plate 1. Both the upper seat plate 3 and the lower seat plate 1 are cylindrical structures. Concave spherical surfaces are provided on the sides of the upper seat plate 3 and the lower seat plate 1 that are close to each other. Arc-shaped friction plates are fixedly provided inside the concave spherical surfaces of the upper seat plate 3 and the lower seat plate 1. The side of the upper seat plate 3 with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate 1 with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. The circumferences of the upper seat plate 3 and the lower seat plate 1 are connected by a sealing ring 2. Both ends of the sealing ring 2 are fixed to the upper seat plate 3 and the lower seat plate 1 respectively by two pipe clamps. A plurality of first connection holes and mounting holes are provided at the top end of the upper seat plate 3. The upper seat plate 3 is connected to the connection cover plate 4 through the first connection holes and the mounting holes. A plurality of fixed connection components are provided circumferentially on the lower seat plate 1. One end of the fixed connection component is fixed to the side surface of the lower seat plate 1, and the other end of the fixed connection component is fixed to the side surface of the connection cover plate 4. When the isolation bearing undergoes a large displacement, the connection cover plate 4 and the upper seat plate 3 move simultaneously, causing the disc spring to bear tension. When bearing tension, the disc spring is stretched, and the bottom friction pendulum assembly still remains in a compressed state. The arc-shaped friction plate is made of a stainless steel plate, and a coating with an ultra-low friction coefficient is sprayed on the upper surface of the rust steel plate, which has characteristics such as ultra-high wear resistance and ultra-low friction coefficient. The coating can adopt polyurethane coatings, polyester coatings, etc. in the prior art.

[0034] In this embodiment, the fixed connection component includes a fixing plate 8. A plurality of second connection holes are provided at both ends of the fixing plate 8. One end of the fixing plate 8 is fixedly connected to the side surface of the lower seat plate 1 through the second connection holes and fixing bolts, and the other end of the fixing plate 8 is fixedly connected to the side surface of the connection cover plate 4 through the second connection holes and fixing bolts. The fixing plate 8 is used to connect the connection cover plate 4 and the lower seat plate 1 to ensure the stability of the overall structure.

[0035] In this embodiment, the spherical crown body assembly includes a spherical crown body 5 and two spherical crown body friction plates 6. Both ends of the spherical crown body 5 are fixedly connected with the spherical crown body friction plates 6. One side of the two spherical crown body friction plates 6 away from the spherical crown body 5 is respectively abutted against the arc surface friction plates arranged on the upper seat plate 3 and the lower seat plate 1. The spherical crown body 5 is installed in the seismic isolation area formed between the upper seat plate 3 and the lower seat plate 1. Since the upper seat plate 3 and the lower seat plate 1 are mirror - image arranged, when the spherical crown body 5 is arranged in the middle, the force and motion state of the spherical crown body 5 when vibrating are closer to those of the traditional friction pendulum seismic isolation bearing. The material of the spherical crown body friction plate 6 is polytetrafluoroethylene, modified polytetrafluoroethylene or modified ultra - high molecular weight polyethylene, which can extend the natural vibration period of the superstructure and consume a part of the seismic energy to achieve the seismic isolation effect. The curvature radii of the spherical crown surface and the concave spherical surface of the spherical crown body 5 are the same. The spherical crown surface can slide in the corresponding concave spherical surface. Moreover, the low - friction - coefficient coating can reduce the friction force when the seismic isolator starts and slides relative to the seat plate, thereby maximizing the seismic isolation effect and reducing vibration damage.

[0036] Embodiment 2:

[0037] As Figures 6 to 8 shown, the difference between this embodiment and Embodiment 1 is that the connecting cover plate 4 includes an upper connecting plate 4.1 and a side connecting plate 4.2. Mounting holes are correspondingly arranged on the upper connecting plate 4.1 and the friction pendulum assembly, and the mounting holes are circumferentially arrayed relative to the center position of the connecting cover plate 4. A first connecting hole is correspondingly arranged on the friction pendulum assembly and the side connecting plate 4.2, and the first connecting hole is located in the radial direction of the friction pendulum assembly. Both the upper connecting plate 4.1 and the side connecting plate 4.2 are connected with the friction pendulum assembly.

[0038] In this embodiment, the friction pendulum assembly includes a spherical crown body assembly, an upper seat plate 3, and a lower seat plate 1. Concave spherical surfaces are provided on the sides of the upper seat plate 3 and the lower seat plate 1 that are close to each other. The upper seat plate 3 has a cuboid structure, and the lower seat plate 1 has a cylindrical structure. Arc friction plates are fixedly arranged inside the concave spherical surfaces of the upper seat plate 3 and the lower seat plate 1. The side of the upper seat plate 3 with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate 1 with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. A plurality of first connection holes are provided at the top end of the upper seat plate 3, and the upper seat plate 3 is connected to the upper connection plate 4.1 through the first connection holes. A plurality of mounting holes are provided on the sides of the upper seat plate 3, and the upper seat plate 3 is connected to the side connection plate 4.2 through the mounting holes. A plurality of fixed connection components are circumferentially arranged on the lower seat plate 1. One end of the fixed connection component is fixed to the side surface of the lower seat plate 1, and the other end of the fixed connection component is fixed to the side surface of the side connection plate 4.2. When an earthquake or other situations occur, the spherical crown body assembly slides between the upper seat plate 3 and the lower seat plate 1. When the spherical crown body assembly slides, it drives the upper seat plate 3 and the connection cover plate 4 to move, and at the same time, it can be effectively reset under the action of the spring 7.

[0039] Working principle: The lower seat plate 1 is connected to the embedded part. The upper seat plate 3 and the lower seat plate 1 are arranged in a mirror image and are movably installed above the lower seat plate 1. When an earthquake occurs, the spherical crown body 5 vibrates and slides, causing the connection cover plate 3 and the upper seat plate 3 to move up and down at the same time. The spring 7 can stretch and compress along with the movement, ensuring the overall compression state of the isolation bearing and being able to automatically reset after the earthquake to maintain the isolation function.

[0040] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the description of the method part.

[0041] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A friction pendulum isolation bearing with anti-separation feature, characterized in that, It includes a friction pendulum assembly, a fixed connection assembly, and a connection cover plate (4). Multiple first connection holes and mounting holes are correspondingly provided at the top of the friction pendulum assembly and on the connection cover plate (4). A connection bolt (9) is arranged in the first connection hole, and the connection cover plate (4) is fixedly connected to the friction pendulum assembly through the connection bolt (9). A cylindrical pin is arranged in the mounting hole on the connection cover plate (4), and a spring (7) is sleeved on the cylindrical pin. One end of the spring (7) abuts against the bottom end of the connection cover plate (4), and the other end abuts against the top end of the friction pendulum assembly. The side surface of the connection cover plate (4) is connected to the friction pendulum assembly through the fixed connection assembly.

2. The friction pendulum isolation bearing for preventing separation according to claim 1, characterized in that, The connection cover plate (4) is a rectangular plate, and the first connection holes and mounting holes on the friction pendulum assembly and the connection cover plate (4) are circumferentially and arrayedly distributed relative to the center position of the top end of the connection cover plate (4).

3. The friction pendulum isolation bearing with anti-separation according to claim 2, characterized in that, The friction pendulum assembly includes a spherical crown body assembly, an upper seat plate (3), and a lower seat plate (1). Both the upper seat plate (3) and the lower seat plate (1) are cylindrical structures. Concave spherical surfaces are provided on one side of the upper seat plate (3) and the lower seat plate (1) close to each other. Arc-shaped friction plates are fixedly arranged in the concave spherical surfaces of the upper seat plate (3) and the lower seat plate (1). The side of the upper seat plate (3) with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate (1) with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. The circumferences of the upper seat plate (3) and the lower seat plate (1) are connected through a sealing ring (2), and both ends of the sealing ring (2) are fixed on the upper seat plate (3) and the lower seat plate (1) respectively through two pipe clamps. Multiple first connection holes and mounting holes are provided at the top end of the upper seat plate (3), and the upper seat plate (3) is connected to the connection cover plate (4) through the first connection holes and mounting holes. Multiple fixed connection assemblies are provided circumferentially on the lower seat plate (1). One end of the fixed connection assembly is fixed on the side surface of the lower seat plate (1), and the other end of the fixed connection assembly is fixed on the side surface of the connection cover plate (4).

4. The friction pendulum isolation bearing for preventing separation according to claim 1, characterized in that, The connection cover plate (4) includes an upper connection plate (4.1) and a side connection plate (4.2). Mounting holes are correspondingly provided on the upper connection plate (4.1) and the friction pendulum assembly, and the mounting holes are circumferentially and arrayedly distributed relative to the center position of the connection cover plate (4). First connection holes are correspondingly provided on the friction pendulum assembly and the side connection plate (4.2), and the first connection holes are located in the radial direction of the friction pendulum assembly. Both the upper connection plate (4.1) and the side connection plate (4.2) are connected to the friction pendulum assembly.

5. The friction pendulum isolation bearing for preventing separation according to claim 4, characterized in that, The friction pendulum assembly includes a spherical crown body assembly, an upper seat plate (3) and a lower seat plate (1). Concave spherical surfaces are provided on the sides of the upper seat plate (3) and the lower seat plate (1) that are close to each other. The upper seat plate (3) has a cuboid structure, and the lower seat plate (1) has a cylindrical structure. Arc-shaped friction plates are fixedly arranged in the concave spherical surfaces of the upper seat plate (3) and the lower seat plate (1). The side of the upper seat plate (3) with the concave spherical surface abuts against the top end of the spherical crown body assembly, and the side of the lower seat plate (1) with the concave spherical surface abuts against the bottom end of the spherical crown body assembly. A plurality of first connection holes are provided at the top end of the upper seat plate (3), and the upper seat plate (3) is connected to the upper connection plate (4.1) through the first connection holes. A plurality of mounting holes are provided on the sides of the upper seat plate (3), and the upper seat plate (3) is connected to the side connection plate (4.2) through the mounting holes. A plurality of fixed connection components are circumferentially arranged on the lower seat plate (1). One end of the fixed connection component is fixed to the side surface of the lower seat plate (1), and the other end of the fixed connection component is fixed to the side surface of the side connection plate (4.2).

6. A friction pendulum isolation bearing for preventing separation according to claim 3 or 5, characterized in that, The fixed connection component includes a fixing plate (8). A plurality of second connection holes are provided at both ends of the fixing plate (8). One end of the fixing plate (8) is fixedly connected to the side surface of the lower seat plate (1) through the second connection holes and fixing bolts, and the other end of the fixing plate (8) is fixedly connected to the side surface of the connection cover plate (4) through the second connection holes and fixing bolts.

7. A friction pendulum isolation bearing for preventing separation according to claim 3 or 5, characterized in that, The spherical crown body assembly includes a spherical crown body (5) and two spherical crown body friction plates (6). The spherical crown body (5) is fixedly connected with the spherical crown body friction plates (6) at both ends. The sides of the two spherical crown body friction plates (6) away from the spherical crown body (5) respectively abut against the arc-shaped friction plates provided on the upper seat plate (3) and the lower seat plate (1).

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