CN218466328U - Friction pendulum vibration reduction and isolation support for supporting plane strong magnet - Google Patents
Friction pendulum vibration reduction and isolation support for supporting plane strong magnet Download PDFInfo
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- CN218466328U CN218466328U CN202221379554.3U CN202221379554U CN218466328U CN 218466328 U CN218466328 U CN 218466328U CN 202221379554 U CN202221379554 U CN 202221379554U CN 218466328 U CN218466328 U CN 218466328U
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Abstract
The utility model relates to a bridge subtracts isolation bearing field specifically is a plane strong magnet subtracts isolation bearing to the friction pendulum that supports. The problem of current spring subtract shock insulation existence is solved. The upper support is fixed with a spherical crown lining plate, a lower spherical crown lining plate is placed in a limiting seat of the lower support, and a plurality of strong magnet pairs are correspondingly installed on the lower spherical crown lining plate and the opposite surface of the limiting seat. This device is through all corresponding a plurality of strong magnet pairs of installing between the spacing seat of undersetting and lower spherical crown welt opposite face, reaches translation deformation, rotates the dual shock absorption and isolation function of deformation function, and from the reset ability reinforce, warp damage not, the quality is easily guaranteed, shock absorption and isolation ability reinforce.
Description
Technical Field
The utility model relates to a bridge subtracts isolation bearing field specifically is a friction pendulum subtracts isolation bearing of plane strong magnet to support.
Background
The great earthquake occurred in the high-intensity earthquake region in recent decades seriously threatens the safety of human beings and causes great loss to national economy. The earthquake damage teaching and training of primary and secondary tragic pain and the important role played by the bridge in rescue and reconstruction after disasters are more and more emphasized by scholars at home and abroad in the study of bridge earthquake resistance. Earthquake damage evaluation experience and vibration theory research show that the earthquake is complex multidimensional ground motion and can be decomposed into 3 independent translation components and 3 independent rotation components. Due to the differentiated seismic source mechanism and the differentiated wave transmission medium, the seismic wave transmission direction and angle are also uncertain. The traditional anti-seismic measures for increasing the section size of the bridge pier or improving the reinforcement ratio of the bridge pier easily cause damage to components such as the bridge pier, are difficult to repair and cause the bridge to collapse in severe cases. The bridge vibration isolation technology is a relatively economic, simple and advanced engineering measure, and through vibration isolation components and devices with specific functions, the vibration time difference is generated in the upper and lower structures of the bridge during earthquake, the vibration frequency of each component is changed, and the earthquake energy is reduced or prevented from entering the main structure.
The traditional friction pendulum support only generally realizes rotary displacement, and the upper and lower structures of the bridge generate vibration time difference through the rotation of the spherical pendulum, so that the shock insulation function is realized; the shock absorption and isolation support of the support and deformation system mainly made of rubber materials has limited vertical support rigidity and horizontal shear rigidity, and has the advantages of less energy consumption, small rotary displacement and unobvious shock isolation effect during earthquake action.
The application number 202121354351.4 provides a friction pendulum support supported by a planar spring, which comprises an upper support plate and a lower support plate, wherein the middle part between the upper support plate and the lower support plate is in contact arrangement, and the contact surfaces are an arc-shaped upper spherical crown lining plate and an arc-shaped lower spherical crown lining plate; a contact gap for limiting the maximum allowable corner is arranged at the edge between the upper spherical cap lining plate and the lower spherical cap lining plate; horizontal limiting connecting blocks are horizontally arranged at the position of the distance between the upper support plate and the upper spherical crown lining plate and the position of the distance between the lower support plate and the lower spherical crown lining plate, and horizontal supporting springs are arranged between the horizontal limiting connecting blocks.
The structure uses the springs arranged in the annular direction as shock absorption and isolation members, and consumes the earthquake impact energy from different directions. However, the spring has certain defects, the fatigue property of the spring is outstanding, and the spring can generate plastic deformation and even fracture damage under the action of a strong earthquake, so that the shock absorption and isolation function is lost, and the problems of short service life, gradually poor shock absorption and isolation effect and unreliable function exist.
SUMMERY OF THE UTILITY MODEL
The utility model provides a plane strong magnet subtracts isolation bearing to friction pendulum of supporting, the effectual current spring of having solved subtracts the problem that the isolation exists, and this device all corresponds through between the spacing seat of support under and the spherical crown welt opposite face and installs a plurality of strong magnets right, reaches translation deformation, the dual shock insulation function that subtracts of rotational deformation function, and from the reset ability reinforce, warp damage, the quality is easily guaranteed, subtract shock insulation ability reinforce.
In order to achieve the above purpose, the utility model adopts the technical scheme as follows:
the utility model provides a strong magnet in plane subtracts isolation bearing to friction pendulum that supports, includes upper bracket 1 and undersetting 2, upper bracket 1 is fixed with spherical crown welt 3, has placed lower spherical crown welt 4 in the spacing seat 201 of undersetting 2, its characterized in that: the opposite surfaces of the lower spherical crown lining plate 4 and the limiting seat 201 are provided with a plurality of strong magnet pairs 5 in a staggered and corresponding mode.
The strong magnet pairs 5 are arranged into annular strip-shaped strong magnet pairs or strip-shaped strong magnet pairs according to the structures of the upper support 1 and the lower support 2.
When the cross sections of the upper support 1 and the lower support 2 are of circular structures, the annular strip-shaped strong magnets are circumferentially arrayed on the lower spherical crown lining plate 4 and the limiting seat 201.
When the cross sections of the upper support 1 and the lower support 2 are of rectangular structures, the strip-shaped strong magnet pairs are linearly arrayed on one opposite surface of the lower spherical crown lining plate 4 and the limiting seat 201.
A shear pin 10 is fixed on the lower support 2.
The utility model has the advantages that: a plurality of strong magnet pairs are correspondingly arranged on the opposite surfaces of the lower spherical crown lining plate and the limiting seat, a nonlinear magnetic force translation seismic isolation and reduction mechanism is formed, and the lower spherical crown lining plate has extremely strong seismic isolation and reduction effects. Meanwhile, the strong magnet pair has longer service life, the seismic isolation and reduction effect is not easy to reduce along with time, and the strong magnet pair can also ensure timely reset when being subjected to strong impact force.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a top view of a circular structure;
FIG. 4 is a top view of a square structure;
shown in the figure: the spherical polytetrafluoroethylene bearing comprises an upper support 1, a lower support 2, a limiting seat 201, an upper spherical crown lining plate 3, a lower spherical crown lining plate 4, a strong magnet pair 5, a spherical polytetrafluoroethylene lining plate 6, a planar polytetrafluoroethylene lining plate 7, a No. 1 rubber gasket 8, a No. 2 rubber gasket 9, a shear pin 10, a sleeve 11 and a corrugated dustproof cover 12.
Detailed Description
The technical solution of the present invention is further described by the following specific embodiments with reference to the accompanying drawings:
example 1
As shown in fig. 1-4, the utility model provides a friction pendulum subtracts isolation bearing of strong magnet of plane to support, including upper bracket 1, undersetting 2, spacing seat 201, last spherical crown welt 3, lower spherical crown welt 4, strong magnet to 5, sphere polytetrafluoroethylene backing plate 6, plane polytetrafluoroethylene backing plate 7, 1# rubber packing ring 8, 2# rubber packing ring 9, shear pin 10, sleeve pipe 11 and the wave form dust cover 12.
The upper support 1 and the lower support 2 are connected with the beam body and the cushion through annular sleeves 11.
The bottom surface of the upper support 1 is provided with an upper spherical crown lining plate 3, and the bottom surface of the upper spherical crown lining plate 3 is of a spherical structure.
The lower support 2 is provided with a limiting seat 201, and the lower support 2 in the limiting seat 201 is provided with a lower spherical cap lining plate 4. In order to reduce the friction force between the lower support 2 and the lower spherical cap lining plate 4, a plane polytetrafluoroethylene base plate 7 is arranged between the lower support 2 and the lower spherical cap lining plate 4. Meanwhile, when the lower support 2 and the lower spherical crown lining plate 4 relatively generate displacement, the lower support 2 and the lower spherical crown lining plate 4 can be effectively protected by placing the plane polytetrafluoroethylene lining plate 7, and the lower support 2 and the lower spherical crown lining plate 4 are not abraded.
Meanwhile, in order to limit the movable range of the lower spherical cap liner 4, a shear pin 10 is provided on the lower support 2.
The upper surface of the lower spherical cap liner plate 4 is spherical, and the upper spherical cap liner plate 3 and the lower spherical cap liner plate 4 are mutually meshed and mounted. In order to reduce the friction force between the upper spherical cap lining plate 3 and the lower spherical cap lining plate 4, a spherical polytetrafluoroethylene lining plate 6 is arranged between the upper spherical cap lining plate 3 and the lower spherical cap lining plate 4. The spherical polytetrafluoroethylene base plate 6 and the plane polytetrafluoroethylene base plate 7 have the same function.
A No. 1 rubber gasket 8 is arranged between the gap between the outer edges of the upper spherical crown lining plate 3 and the lower spherical crown lining plate 4, an allowable rotation angle value can be set according to deformation requirements, and rigid collision is avoided. The inner surface of the limiting seat 201 is also provided with a No. 2 rubber gasket 9, and the function of the limiting seat is the same as that of the No. 1 rubber gasket 8.
This scheme all corresponds with spacing seat 201 opposite face at spherical crown welt 4 down and installs a plurality of strong magnets of dislocation to 5, as shown in fig. 3 and fig. 4, the back of misplacing for arbitrary strong magnet all is in between other two strong magnets of dislocation, forms the triangle structure, and its atress also becomes the triangle mode, and the atress of this triangle mode can effectual improvement subtract restoring force after the shock insulation. When the cross sections of the upper support 1 and the lower support 2 are in circular structures, the annular strip-shaped strong magnets are circumferentially arrayed on the lower spherical crown lining plate 4 and the limiting seat 201. When the cross sections of the upper support 1 and the lower support 2 are in a rectangular structure, the strip-shaped strong magnet pairs are linearly arrayed on one opposite surface of the lower spherical crown lining plate 4 and the limiting seat 201.
The friction pendulum support supported by the planar spring is applied to the field of bridge engineering shock absorption and isolation supports, and can provide multidirectional translation, multidirectional rotation displacement and strong elastic energy consumption capability. The upper spherical crown lining plate 3 and the lower spherical crown lining plate 4 rotate to realize rotation in any direction; the lower support 2 and the lower spherical crown lining plate 4 slide horizontally, and the strong magnet pair 5 achieves translational displacement energy consumption. Thus, a displacement device which has independent translation displacement and rotation displacement and can work cooperatively is constructed, and the strong magnet pair 5 forms an energy consumption mechanism.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides a strong magnet in plane subtracts isolation bearing to friction pendulum that supports, includes upper bracket and undersetting, the upper bracket is fixed with the spherical crown welt, has placed lower spherical crown welt in the spacing seat of undersetting, its characterized in that: and a plurality of strong magnet pairs are correspondingly arranged on the opposite surfaces of the lower spherical crown lining plate and the limiting seat.
2. The friction pendulum seismic mitigation and isolation bearing supported by the planar strong magnet pair according to claim 1, characterized in that: the strong magnet pairs are arranged into annular strip-shaped strong magnet pairs or strip-shaped strong magnet pairs according to the structures of the upper support and the lower support.
3. The friction pendulum seismic mitigation and isolation bearing supported by the planar strong magnet pair according to claim 1, characterized in that: when the cross sections of the upper support and the lower support are of circular structures, the annular strip-shaped strong magnets are circumferentially arrayed on the lower spherical crown lining plate and the limiting seat.
4. The friction pendulum seismic mitigation and isolation bearing supported by the planar strong magnet pair according to claim 3, characterized in that: when the cross sections of the upper support and the lower support are of rectangular structures, the strip-shaped strong magnets are linearly arrayed on one opposite surface of the lower spherical crown lining plate and the limiting seat.
5. The friction pendulum seismic mitigation and isolation bearing supported by the planar strong magnet pair according to claim 1, characterized in that: and a shear pin is fixed on the lower support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221379554.3U CN218466328U (en) | 2022-06-02 | 2022-06-02 | Friction pendulum vibration reduction and isolation support for supporting plane strong magnet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221379554.3U CN218466328U (en) | 2022-06-02 | 2022-06-02 | Friction pendulum vibration reduction and isolation support for supporting plane strong magnet |
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| CN218466328U true CN218466328U (en) | 2023-02-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202221379554.3U Active CN218466328U (en) | 2022-06-02 | 2022-06-02 | Friction pendulum vibration reduction and isolation support for supporting plane strong magnet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344862A (en) * | 2023-11-10 | 2024-01-05 | 固世通科技有限公司 | Magnetic automatic reset shock insulation support |
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2022
- 2022-06-02 CN CN202221379554.3U patent/CN218466328U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117344862A (en) * | 2023-11-10 | 2024-01-05 | 固世通科技有限公司 | Magnetic automatic reset shock insulation support |
| CN117344862B (en) * | 2023-11-10 | 2024-04-23 | 固世通科技有限公司 | Magnetic automatic reset shock insulation support |
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