Large-damping double-curved-surface seismic mitigation and isolation spherical support

Abstract

The utility model discloses a large-damping double-curved-surface seismic mitigation and isolation spherical support which comprises an upper support plate, a lower support plate and a take-up reel, the upper support plate is located at the top of the lower support plate, the take-up reel is located at one end of the lower support plate, and the same protection assembly is installed outside the upper support plate and the lower support plate. The protection assembly comprises a rubber sheet fixedly connected with the outer wall of one end of the upper support plate and the outer wall of one end of the lower support plate, the movable end of the rubber sheet can be attached to the outer portion of the fixed end of the rubber sheet, two positioning pins are slidably inserted into the movable end and the fixed end of the rubber sheet, and the two positioning pins are slidably inserted into the outer wall of one end of the upper support plate and the outer wall of one end of the lower support plate correspondingly. Through the arrangement of the protection assembly, the shock absorption and isolation assembly between the two support plates can be separated from the external environment, the influence of the external environment on the operation of the device is avoided, the rubber sheet can be taken down and installed at the fixed position, and maintenance work is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of bridge vibration reduction technology, specifically a high-damping hyperboloid spherical bearing for vibration isolation. Background Technology

[0002] Seismic isolation and damping design, a relatively new method for bridge seismic design, has seen widespread development and application in recent decades. The core idea of ​​this method is to use special devices to dissipate or isolate seismic energy, thereby reducing the damage to bridge structures caused by earthquakes. Hyperboloid spherical seismic isolation bearings, as an important device in this field, have been increasingly used in bridge seismic design since their development due to their advantages such as simple construction, high load-bearing capacity, and good durability.

[0003] A search revealed a utility model patent with Chinese patent publication number CN217499913U, which discloses a hyperboloid spherical seismic isolation bearing, comprising a top plate, an upper plate, a middle plate, a lower plate, a base plate, a lower plate limiting plate, and a base plate limiting plate. Limiting blocks are provided on both the lower longitudinal and transverse sides of the top plate, and limiting blocks are also provided on both the longitudinal and transverse sides surrounding the upper part of the upper plate. The lower surface of the upper plate is a concave spherical surface, and the upper and lower surfaces of the middle plate are convex spherical surfaces.

[0004] When the above-mentioned device is in use, since each component is exposed to the external environment, especially in coastal, riverside and sandy areas, dust, rainwater and other substances can easily enter the spherical support, which inevitably affects the normal operation of the device. Utility Model Content

[0005] The purpose of this invention is to provide a high-damping hyperboloid spherical bearing for seismic isolation and damping, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a high-damping hyperboloid spherical bearing for vibration reduction and isolation, comprising an upper support plate, a lower support plate, and a take-up reel. The upper support plate is located at the top of the lower support plate, and the take-up reel is located at one end of the lower support plate. The upper and lower support plates are equipped with the same protective component. The protective component includes a rubber sheet fixedly connected to the outer wall of one end of the upper and lower support plates. The movable end of the rubber sheet can fit against the outside of the fixed end of the rubber sheet. Two positioning pins are slidably inserted into the movable end and the fixed end of the rubber sheet. The two positioning pins are respectively slidably inserted into the outer wall of one end of the upper and lower support plates, and the ends of the two positioning pins are made of magnets.

[0007] As a further preferred embodiment of this technical solution, a pull rope is fixedly connected to the top of the outer wall of one movable end of the rubber sheet. The pull rope can wrap around the rubber sheet, and the other end of the pull rope is attached to the outer wall of one fixed end of the rubber sheet. The connecting rope inside the take-up reel is fixedly connected to the bottom of the outer wall of one movable end of the rubber sheet.

[0008] This device can isolate the vibration damping and isolation components between the two support plates from the external environment, preventing the external environment from affecting the operation of the device. It also allows the rubber sheet to be removed and installed in a fixed position, facilitating maintenance. To maintain the vibration damping and isolation components, first pull out the positioning pin inserted into the movable end of the rubber sheet. Then, remove the end of the pull rope attached to the outside of the rubber sheet and pull it outward. The pull rope fixed to the movable end of the rubber sheet will then move it to the other side. The connecting rope of the take-up reel will also move synchronously with the movable end of the rubber sheet. Subsequently, the components between the upper and lower support plates will be exposed. After maintenance, turn the handle of the take-up reel, and the connecting rope will be gradually wound up. The movable end of the rubber sheet on the other side will be moved back to its original position by the connecting rope of the take-up reel. After manually tightening and aligning it, insert the two positioning pins through both ends of the rubber sheet into the upper and lower support plates to complete the installation.

[0009] As a further preferred embodiment of this technical solution, four magnetic blocks are fixedly connected inside one corner of the rubber sheet, and two positioning grooves are opened at one corner of both the upper support plate and the lower support plate, so that the four magnetic blocks can be inserted into the four positioning grooves respectively.

[0010] As a further preferred embodiment of this technical solution, a plurality of damping components are installed between the upper support plate and the lower support plate, and the plurality of damping components are divided into four groups and located at the top of the four corners of the top outer wall of the lower support plate.

[0011] As a further preferred embodiment of this technical solution, the damping assembly includes a first universal joint fixedly connected to the top outer wall of the lower support plate, a second universal joint fixedly connected to the bottom outer wall of the lower support plate, and the same damping rod fixedly connected to the movable ends of the first universal joint and the second universal joint.

[0012] When the upper support plate and the lower support plate move or slide, the damping rod is fixed with two first universal joints at both ends, and the two first universal joints are fixed to the outside of the upper support plate and the lower support plate respectively. The damping rod can also extend and retract. Considering all these conditions, the damping assembly can change with the rotation of the upper support plate and the lower support plate. When the two change, the damping rod will tilt, and its length will also change. Therefore, the damping performance of the device can be greatly increased.

[0013] As a further preferred embodiment of this technical solution, a vibration damping and isolation component is installed between the upper support plate and the lower support plate. The vibration damping and isolation component includes a stainless steel plate, a planar polytetrafluoroethylene plate, a spherical steel liner plate, and a spherical polytetrafluoroethylene plate, and the stainless steel plate, the planar polytetrafluoroethylene plate, the spherical steel liner plate, and the spherical polytetrafluoroethylene plate are distributed overlapping each other from top to bottom.

[0014] As a further preferred embodiment of this technical solution, the rubber sheet has a corrugated groove in the middle.

[0015] This utility model provides a high-damping hyperboloidal seismic isolation spherical bearing, which has the following beneficial effects:

[0016] (1) By setting up protective components, this utility model can separate the vibration damping and isolation components between the two support plates from the external environment, avoid the external environment from affecting the operation of the device, and also remove and install the rubber sheet in a fixed position, which facilitates maintenance work. If the vibration damping and isolation components need to be maintained, first pull out the positioning pin inserted into the movable end of the rubber sheet, then remove the end of the pull rope attached to the outside of the rubber sheet, and then pull it outward. The pull rope fixed to the movable end of the rubber sheet will move it to the other side, and the connecting rope of the take-up reel will also be moved synchronously by the movable end of the rubber sheet. Then the components between the upper support plate and the lower support plate will be exposed. After maintenance is completed, turn the handle of the take-up reel, and the connecting rope therein will be gradually wound up. The movable end of the rubber sheet in the other position will be moved back to its original position by the connecting rope of the take-up reel. Then manually tighten and align it, and put the two positioning pins through the two ends of the rubber sheet into the upper support plate and the lower support plate to complete the installation.

[0017] (2) By setting up a damping component, when the upper support plate and the lower support plate move or slide, the damping rod is fixed with two first universal joints at both ends, and the two first universal joints are fixed to the outside of the upper support plate and the lower support plate respectively. The damping rod can also extend and retract. Considering various conditions, the damping component can change with the flipping of the upper support plate and the lower support plate. When the two change, the damping rod will tilt, and its length will also change. Therefore, the damping performance of the device can be greatly increased. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall first-view structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall second-view structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the overall third-view structure of this utility model;

[0021] Figure 4 For the present utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0022] In the diagram: 1. Upper support plate; 2. Lower support plate; 3. Protective assembly; 4. Damping assembly; 301. Rubber sheet; 302. Corrugated groove; 303. Positioning pin; 304. Positioning groove; 305. Magnetic block; 306. Pull rope; 307. Reel; 401. First universal joint; 402. Second universal joint; 403. Damping rod. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown in this embodiment, a high-damping hyperboloidal vibration isolation spherical bearing includes an upper support plate 1, a lower support plate 2, and a take-up reel 307. The upper support plate 1 is located at the top of the lower support plate 2, and the take-up reel 307 is located at one end of the lower support plate 2. The same protective component 3 is installed on the outside of the upper support plate 1 and the lower support plate 2. The protective component 3 includes a rubber sheet 301 fixedly connected to the outer wall of one end of the upper support plate 1 and the lower support plate 2. The movable end of the rubber sheet 301 can fit against the outside of the fixed end of the rubber sheet 301. Two positioning pins 303 are slidably inserted into the movable end and the fixed end of the rubber sheet 301. The two positioning pins 303 are slidably inserted into the outer wall of one end of the upper support plate 1 and the lower support plate 2, respectively, and the ends of the two positioning pins 303 are made of magnets.

[0025] A pull rope 306 is fixedly connected to the top of the outer wall of one movable end of the rubber sheet 301. The pull rope 306 can wrap around the rubber sheet 301, and the other end of the pull rope 306 is attached to the outer wall of one fixed end of the rubber sheet 301. The connecting rope inside the take-up reel 307 is fixedly connected to the bottom of the outer wall of one movable end of the rubber sheet 301.

[0026] like Figure 2 As shown, four magnetic blocks 305 are fixedly connected inside one corner of the rubber sheet 301. Two positioning grooves 304 are opened at one corner of both the upper support plate 1 and the lower support plate 2. The four magnetic blocks 305 can be inserted into the four positioning grooves 304 respectively. When the rubber sheet 301 surrounds the two support plates, the magnetic blocks 305 will enter the positioning grooves 304, thereby achieving a limiting effect and increasing the stability of the rubber sheet 304.

[0027] If the vibration damping and isolation components need to be inspected, first pull out the positioning pin 303 inserted into the movable end of the rubber sheet 301. Then remove the end of the pull rope 306 that is glued to the outside of the rubber sheet 301 and pull it outward. The pull rope 306 fixed to the movable end of the rubber sheet 301 will move to the other side. The connecting rope of the take-up reel 307 will also move synchronously with the movable end of the rubber sheet 301. Then the components between the upper support plate 1 and the lower support plate 2 will be exposed. After the inspection is completed, turn the handle of the take-up reel 307. The connecting rope is gradually wound up. The movable end of the rubber sheet 301 on the other side is moved back to its original position by the connecting rope of the take-up reel 307. Then manually tighten and align it. Pass the two positioning pins 303 through both ends of the rubber sheet 301 into the upper support plate 1 and the lower support plate 2 to complete the installation.

[0028] like Figure 3 and Figure 4 As shown, multiple damping components 4 are installed between the upper support plate 1 and the lower support plate 2, and the multiple damping components 4 are divided into four groups and located at the top of the four corners of the top outer wall of the lower support plate 2.

[0029] The damping assembly 4 includes a first universal joint 401 fixedly connected to the top outer wall of the lower support plate 2, a second universal joint 402 fixedly connected to the bottom outer wall of the lower support plate 2, and the same damping rod 403 fixedly connected to the movable ends of the first universal joint 401 and the second universal joint 402.

[0030] When the upper support plate 1 and the lower support plate 2 move or slide, the damping rod 403 has two first universal joints 401 fixed at both ends, and the two first universal joints 401 are fixed to the outside of the upper support plate 1 and the lower support plate 2 respectively. The damping rod 403 can also extend and retract. Considering all these conditions, the damping assembly 4 can change with the rotation of the upper support plate 1 and the lower support plate 2. When the two change, the damping rod 403 will tilt, and its length will also change. Therefore, the damping performance of the device can be greatly increased.

[0031] like Figure 3 As shown, a vibration damping and isolation assembly is installed between the upper support plate 1 and the lower support plate 2. The vibration damping and isolation assembly includes a stainless steel plate, a flat polytetrafluoroethylene plate, a spherical steel liner plate, and a spherical polytetrafluoroethylene plate, and the stainless steel plate, the flat polytetrafluoroethylene plate, the spherical steel liner plate, and the spherical polytetrafluoroethylene plate are distributed overlapping each other from top to bottom.

[0032] The combination of spherical steel lining plate and spherical polytetrafluoroethylene plate ensures that the upper support plate 1 and the lower support plate 2 can swing freely. The combination of stainless steel plate and flat polytetrafluoroethylene plate on the top of the two plates ensures that the upper support plate 1 and the lower support plate 2 can move horizontally, ensuring that the bridge and the support will not be damaged by deformation due to external environmental influences.

[0033] like Figure 1 and Figure 2 As shown, a corrugated groove 302 is provided in the middle of the rubber sheet 301, so that when the upper support plate 1 and the lower support plate 2 change position, the rubber sheet 301 can freely expand and contract under the action of the corrugated groove 302, thereby preventing the rubber sheet from detaching from the upper support plate 1.

[0034] This utility model provides a high-damping hyperboloidal seismic isolation spherical bearing, the specific working principle of which is as follows:

[0035] When the device is in operation, it can be put into use after the spherical support is installed. Due to the cooperation of the spherical steel liner and the spherical PTFE plate in the vibration damping and isolation assembly, the swaying between the upper support plate 1 and the lower support plate 2 is sufficiently convenient. The cooperation of the stainless steel plate and the flat PTFE plate on top of both ensures that the upper support plate 1 and the lower support plate 2 can move horizontally, ensuring that the bridge and the support are not damaged by deformation due to external environmental influences. When the upper support plate 1 and the lower support plate 2 move or slide, because the damping rod 403 has two first universal joints 401 fixed at both ends, and the two first universal joints 401 are respectively fixed to the outside of the upper support plate 1 and the lower support plate 2, and the damping rod 403 can also extend and retract, the damping assembly 4 can change with the rotation of the upper support plate 1 and the lower support plate 2. When the two change, the damping rod 403 will tilt, thus... Its length will also change, thus greatly increasing the damping performance of the device. If the vibration damping and isolation components need to be inspected, first pull out the positioning pin 303 inserted into the movable end of the rubber sheet 301, then remove the end of the pull rope 306 that is glued to the outside of the rubber sheet 301, and then pull it outward. The pull rope 306 fixed to the movable end of the rubber sheet 301 will then move to the other side. The connecting rope of the take-up reel 307 will also move synchronously with the movable end of the rubber sheet 301. Then the components between the upper support plate 1 and the lower support plate 2 will be exposed. After the inspection is completed, turn the handle of the take-up reel 307. The connecting rope is gradually wound up. The movable end of the rubber sheet 301 on the other side is moved back to its original position by the connecting rope of the take-up reel 307. Then manually tighten and align it. Then pass the two positioning pins 303 through both ends of the rubber sheet 301 into the upper support plate 1 and the lower support plate 2 to complete the installation.

[0036] 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 high-damping hyperboloid spherical bearing for seismic isolation, comprising an upper bearing plate (1), a lower bearing plate (2), and a take-up reel (307), characterized in that: The upper support plate (1) is located at the top of the lower support plate (2), and the take-up reel (307) is located at one end of the lower support plate (2). The upper support plate (1) and the lower support plate (2) are equipped with the same protective component (3). The protective component (3) includes a rubber sheet (301) fixedly connected to the outer wall of one end of the upper support plate (1) and the lower support plate (2). The movable end of the rubber sheet (301) can fit against the outside of the fixed end of the rubber sheet (301). The movable end and the fixed end of the rubber sheet (301) are slidably inserted with two positioning pins (303). The two positioning pins (303) are respectively slidably inserted into the outer wall of one end of the upper support plate (1) and the lower support plate (2), and the ends of the two positioning pins (303) are made of magnets.

2. The high-damping hyperboloid seismic isolation spherical bearing according to claim 1, characterized in that: A pull rope (306) is fixedly connected to the top of the outer wall of one movable end of the rubber sheet (301). The pull rope (306) can wrap around the rubber sheet (301), and the other end of the pull rope (306) is attached to the outer wall of one fixed end of the rubber sheet (301). The connecting rope inside the take-up reel (307) is fixedly connected to the bottom of the outer wall of one movable end of the rubber sheet (301).

3. The high-damping hyperboloid seismic isolation spherical bearing according to claim 1, characterized in that: Four magnetic blocks (305) are fixedly connected inside one corner of the rubber sheet (301). Two positioning grooves (304) are opened at one corner of both the upper support plate (1) and the lower support plate (2). The four magnetic blocks (305) can be inserted into the four positioning grooves (304) respectively.

4. The high-damping hyperboloid seismic isolation spherical bearing according to claim 1, characterized in that: Multiple damping components (4) are installed between the upper support plate (1) and the lower support plate (2), and the multiple damping components (4) are divided into four groups and located at the top of the four corners of the top outer wall of the lower support plate (2).

5. A high-damping hyperboloid seismic isolation spherical bearing according to claim 4, characterized in that: The damping assembly (4) includes a first universal joint (401) fixedly connected to the top outer wall of the lower support plate (2), and a second universal joint (402) fixedly connected to the bottom outer wall of the lower support plate (2). The moving ends of the first universal joint (401) and the second universal joint (402) are fixedly connected to the same damping rod (403).

6. The high-damping hyperboloid seismic isolation spherical bearing according to claim 1, characterized in that: A vibration damping and isolation assembly is installed between the upper support plate (1) and the lower support plate (2). The vibration damping and isolation assembly includes a stainless steel plate, a planar polytetrafluoroethylene plate, a spherical steel liner plate, and a spherical polytetrafluoroethylene plate, and the stainless steel plate, planar polytetrafluoroethylene plate, spherical steel liner plate, and spherical polytetrafluoroethylene plate are distributed overlapping each other from top to bottom.

7. A high-damping hyperboloid seismic isolation spherical bearing according to claim 1, characterized in that: The rubber sheet (301) has a corrugated groove (302) in the middle.

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