CN215366798U - Damping support with shock absorption and limiting functions - Google Patents
Damping support with shock absorption and limiting functions Download PDFInfo
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- CN215366798U CN215366798U CN202121515490.0U CN202121515490U CN215366798U CN 215366798 U CN215366798 U CN 215366798U CN 202121515490 U CN202121515490 U CN 202121515490U CN 215366798 U CN215366798 U CN 215366798U
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Abstract
The utility model discloses a damping limiting magnetic damping support which comprises an upper support steel plate, a middle steel lining plate, a lower support plate, a magnetic damping device and a limiting stop block, wherein the magnetic damping device comprises a permanent magnet, a fixed stop block, a rotating spring and a supporting steel plate which are sequentially arranged from top to bottom, the supporting steel plate is connected with the lower support plate, the upper support steel plate is arranged on the permanent magnet, and a sliding plate is arranged between the permanent magnet and the upper support steel plate, so that the upper support steel plate can horizontally move relative to the lower support plate and acts with the permanent magnet to generate eddy current, the kinetic energy of the upper support steel plate is converted into internal motion, and the damping function is realized. Two fixed magnetic fields are generated at two ends of the device in the displacement direction through the magnetic damping device, when the bridge beam plate is displaced under the action of vibration and earthquake force, the bridge beam plate can penetrate through the fixed magnetic fields generated by the magnetic damping device when the upper support steel plate is displaced to generate vortex, and the kinetic energy of the vortex is converted into internal motion, so that the aim of damping is fulfilled.
Description
Technical Field
The utility model relates to the technical field of bridge damping, in particular to a damping limiting magnetic damping support.
Background
The development of bridge bearings in China starts in the 60 th 20 th century, plate-type rubber bearings, basin-type rubber bearings, spherical steel bearings and the like are successively researched and developed on the basis of traditional steel bearings, and the bridge bearings are widely applied to highway and railway bridges. However, the design of the support adopts the concept of 'static design', and only the structural size of the support is increased to resist the shock force, so that the method is not beneficial to both the support and the pier.
In order to improve the seismic performance of bridge supports, some shock absorption and isolation supports have been adopted on roads and railway bridges in China since the 80 th century. Common anti-seismic supports include anti-seismic basin-type rubber fixed supports, lead core rubber supports, friction pendulum type shock insulation supports and the like. For example, a Sutong Yangtze river highway bridge built in 2008 adopts a damping and shock-isolating support formed by combining a spherical steel support and a plate-type rubber support and a pendulum type spherical steel support.
At present, various countries in the world have various modes of shock absorption and shock isolation supports, wherein friction damper type shock absorption and shock isolation supports, viscous damping type shock absorption and shock isolation supports, pendulum type shock absorption and shock isolation supports, lead core rubber supports, high-damping rubber supports and the like are commonly used.
The bridge bearing of the type realizes the shock absorption only in the vertical direction actually, has limited effect on horizontal shock absorption, and cannot realize the energy consumption under multiple stages of earthquake.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model aims to provide a damping limiting magnetic damping support which utilizes the electromagnetic eddy current principle to reduce the kinetic energy of a beam plate so as to achieve the aim of damping.
Therefore, the utility model provides a damping limiting magnetic damping support which comprises an upper support steel plate, a middle steel lining plate, a lower support plate, a magnetic damping device and a limiting stop block, wherein the magnetic damping device comprises a permanent magnet, a fixed stop block, a rotating spring and a supporting steel plate which are sequentially arranged from top to bottom, the supporting steel plate is connected with the lower support plate, the upper support steel plate is arranged on the permanent magnet, and a sliding plate is arranged between the permanent magnet and the upper support steel plate, so that the upper support steel plate can horizontally move relative to the lower support plate and acts with the permanent magnet to generate eddy current, the kinetic energy of the upper support steel plate is converted into internal motion, and the damping function is realized.
Furthermore, the permanent magnet is in a long strip shape, two ends of the permanent magnet in the length direction are respectively connected with the pair of fixed stop blocks, and interference between the upper support steel plate and other parts in the rotating process is avoided through buffering of the rotating spring.
Further, the supporting steel plate is connected with the lower support plate through a reinforcing rib, the reinforcing rib is in a right-angled triangle shape, the supporting steel plate is connected with the upper end face of the reinforcing rib, and the vertical side face of the reinforcing rib is connected with the lower support plate.
Further, the permanent magnet, the fixed stop block and the support steel plate are connected in the vertical direction through anchor bolts.
Further, the sliding plate is made of a polytetrafluoroethylene plate with high wear resistance and low friction coefficient.
Further, the permanent magnet is a neodymium-boron-iron permanent magnet capable of generating a strong magnetic fixed magnetic field.
The damping limiting magnetic damping support provided by the utility model is characterized in that a front magnetic damping device and a rear magnetic damping device are arranged in the displacement direction of the traditional support by using an electromagnetic eddy current principle, two fixed magnetic fields are generated at two ends of the displacement direction of the traditional support through the magnetic damping devices, when a bridge beam plate is displaced under the action of vibration and earthquake, an upper support steel plate is driven by the beam plate to be displaced, and when the upper support steel plate is displaced, the upper support steel plate can penetrate through the fixed magnetic fields generated by the magnetic damping devices. At this time, a vortex is generated in the steel plate of the upper support, and the kinetic energy of the vortex is converted into internal motion. The upper support steel plate repeatedly passes through the fixed magnetic field due to vibration, and the kinetic energy of the upper support steel plate can be effectively reduced. The kinetic energy of the upper support steel plate and the beam plate is reduced by the mode, so that the aim of shock absorption is fulfilled.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a front view of a basin-type shock absorbing bridge deck of the present invention;
FIG. 2 is a top view of the basin-type shock absorbing bridge deck of the present invention;
FIG. 3 is a side view of the basin-type shock absorbing bridge deck of the present invention;
FIG. 4 is a front view of a magnetic damping device of the present invention;
FIG. 5 is a side view of a magnetic damping device of the present invention;
FIG. 6 is a top view of a magnetic damping device of the present invention;
FIG. 7 is a front view of the ball-type shock absorbing bridge deck of the present invention;
FIG. 8 is a side view of a ball-type shock absorbing bridge deck of the present invention;
FIG. 9 is a top view of the ball-type shock absorbing bridge deck of the present invention.
Description of the reference numerals
1. An upper bracket steel plate; 2. an intermediate steel liner plate; 3. a lower support plate; 4. a magnetic damping device; 5. a limit stop block; 41. a sliding plate; 42. an anchor bolt; 43. a rotating spring; 44. fixing a stop block; 45. a permanent magnet; 46. reinforcing ribs; 47. and supporting the steel plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
As shown in fig. 1, the damping support for damping vibration and limiting magnetic of the present invention comprises: the steel plate support comprises an upper support steel plate 1, a middle steel lining plate 2, a lower support plate 3, a magnetic damping device 4 and a limit stop 5.
As shown in fig. 1-3, middle steel liner plate 2 is arranged in the middle of lower support plate 3, a pair of magnetic damping devices 4 are respectively arranged on two sides of lower support plate 3, the middle of upper support steel plate 1 is supported on middle steel liner plate 2, the positions of upper support steel plate 1 near two ends are supported on magnetic damping devices 4, the lower side of upper support steel plate 1 is connected with limit stop 5, and limit stop 5 is matched with the limit structure on the lower support plate to limit the whole support to move substantially.
Specifically, as shown in fig. 4 to 6, the magnetic damping device 4 includes a sliding plate 41, an anchor bolt 42, a rotating spring 43, a fixed stopper 44, a permanent magnet 45, a reinforcing rib 46, and a support steel plate 47.
Wherein, as shown in fig. 5, the strengthening rib 46 is right triangle shape, wherein the right-angle side and the bottom suspension bedplate 3 fixed connection of vertical setting, be equipped with supporting steel plate 47 on the right-angle side that the level set up, be equipped with fixed stop 44 on supporting steel plate 47, permanent magnet 45 is rectangular form, permanent magnet 45 length direction's both ends are connected with fixed stop 44 respectively, be equipped with rotating spring 43 between permanent magnet 45 and the fixed stop 44 simultaneously, rethread anchor bolt 42 is floated and is connected, make permanent magnet 45 can swing on supporting steel plate 47, and then make upper bracket steel sheet 1 take place to rotate at vibrations in-process, and avoid the upper bracket steel sheet rotates in-process and produces the interference with other parts.
In this example, the sliding plate 41 is made of teflon plate material, which has very good wear resistance and small sliding friction coefficient, so that the upper seat steel plate 1 is located at the upper end of the sliding plate 41 and can slide with it to a small extent after the whole seat is installed, in order to facilitate the sliding of the upper seat steel plate and reduce friction.
The sliding plate is a part for reducing friction force and preventing loss caused by direct contact friction between the upper support steel plate and the permanent magnet.
In addition, the permanent magnet 45 is a neodymium-boron-iron permanent magnet, which can generate a fixed magnetic field and has very strong magnetism. The rotating spring 43 is used for meeting the requirement that the upper support steel plate 1 rotates to drive the permanent magnet 45 to rotate.
When the upper support steel plate 1 moves horizontally due to the deformation of the beam plate, the fixed magnetic field generated by the permanent magnet 45 moves along with the beam plate to ensure that the upper support steel plate 1 can penetrate through the magnetic field at a relatively vertical angle under any working condition, and the term "fixed" means fixed relative to the upper support steel plate.
When the field intensity of the magnetic field is fixed, the faster the upper support steel plate passes through the magnetic field, the larger the generated eddy current is, the larger the amount of kinetic energy of the upper support steel plate which is converted is, and the better the damping effect is; this characteristic corresponds to the effect of seismic forces on buildings.
The vortex is generated in the upper support plate to convert the kinetic energy of the upper support steel plate (the kinetic energy of the upper support plate, i.e. the kinetic energy of the superstructure such as a bridge beam plate, bridge deck pavement, etc.) into internal energy. The supporting steel plate and the permanent magnet are relatively fixed, and are relatively static with the bridge pier column and the ground.
Fig. 7 to 9 are three views of a spherical shock-absorbing bridge support, the structure of which is similar to that of the basin-type shock-absorbing bridge support in fig. 1 to 3, and which also includes an upper support steel plate 1, an intermediate steel liner plate 2, a lower support plate 3, a magnetic damping device 4, and a limit stop 5, and the structure and the installation mode of the magnetic damping device 4 are the same, and the shock-absorbing effect can also be achieved.
According to the damping bridge support, the principle is applied, the front magnetic damping device and the rear magnetic damping device are arranged in the displacement direction of the traditional support, two fixed magnetic fields are generated at two ends of the displacement direction of the device through the magnetic damping devices, when the bridge beam plate is displaced under the action of vibration and earthquake force, the upper support steel plate is driven by the beam plate to be displaced, and when the upper support steel plate is displaced, the upper support steel plate penetrates through the fixed magnetic fields generated by the magnetic damping devices. At this time, a vortex is generated in the steel plate of the upper support, and the kinetic energy of the vortex is converted into internal motion. The upper support steel plate repeatedly passes through the fixed magnetic field due to vibration, and the kinetic energy of the upper support steel plate can be effectively reduced. The kinetic energy of the upper support steel plate and the beam plate is reduced by the mode, so that the aim of shock absorption is fulfilled, and good shock absorption and shock absorption functions can be achieved.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A damping limiting magnetic damping support is characterized by comprising an upper support steel plate (1), a middle steel liner plate (2), a lower support plate (3), a magnetic damping device (4) and a limiting stop block (5),
the magnetic damping device (4) comprises a permanent magnet (45), a fixed stop block (44), a rotating spring (43) and a supporting steel plate (47) which are sequentially arranged from top to bottom, the supporting steel plate (47) is connected with the lower support plate (3), the upper support steel plate (1) is arranged on the permanent magnet (45),
the damping device is characterized in that a sliding plate (41) is arranged between the permanent magnet (45) and the upper support steel plate (1), so that the upper support steel plate (1) can horizontally move relative to the lower support plate (3) and acts with the permanent magnet (45) to generate eddy current, the kinetic energy of the upper support steel plate (1) is converted into internal motion, and the damping function is realized.
2. The shock-absorbing limit magnetic damping mount according to claim 1, wherein the permanent magnet (45) is in an elongated shape, and both ends of the permanent magnet (45) in the length direction are respectively connected with the pair of fixed stoppers (44), so as to avoid interference with other parts during the rotation of the upper mount steel plate (1) through the buffering of the rotating spring (43).
3. The shock-absorbing limit magnetic damping mount according to claim 1, characterized in that the supporting steel plate (47) is connected with the lower mount plate (3) through a reinforcing rib (46), the reinforcing rib (46) is in a right triangle shape, the supporting steel plate (47) is connected with the upper end face of the reinforcing rib (46), and the vertical side face of the reinforcing rib (46) is connected with the lower mount plate (3).
4. The shock-absorbing limit magnetic damping mount according to claim 1, wherein the permanent magnet (45), the fixed stop (44) and the support steel plate (47) are connected in the vertical direction by an anchor bolt (42).
5. The shock-absorbing limit magnetic damping mount according to claim 1, wherein said sliding plate (41) is a teflon sheet with high wear resistance and low friction coefficient.
6. The shock-absorbing limit-magnetic damping mount as set forth in claim 1, characterized in that said permanent magnet (45) is a neodymium-boron-iron permanent magnet capable of generating a strong magnetic stationary field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121515490.0U CN215366798U (en) | 2021-07-05 | 2021-07-05 | Damping support with shock absorption and limiting functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121515490.0U CN215366798U (en) | 2021-07-05 | 2021-07-05 | Damping support with shock absorption and limiting functions |
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| CN215366798U true CN215366798U (en) | 2021-12-31 |
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| CN202121515490.0U Active CN215366798U (en) | 2021-07-05 | 2021-07-05 | Damping support with shock absorption and limiting functions |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047496A (en) * | 2021-03-18 | 2021-06-29 | 中南建筑设计院股份有限公司 | Sliding damping floor slab |
| CN114808674A (en) * | 2022-05-12 | 2022-07-29 | 长沙理工大学 | Electromagnetic control-based self-adaptive friction pendulum support and resetting method |
-
2021
- 2021-07-05 CN CN202121515490.0U patent/CN215366798U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113047496A (en) * | 2021-03-18 | 2021-06-29 | 中南建筑设计院股份有限公司 | Sliding damping floor slab |
| CN114808674A (en) * | 2022-05-12 | 2022-07-29 | 长沙理工大学 | Electromagnetic control-based self-adaptive friction pendulum support and resetting method |
| CN114808674B (en) * | 2022-05-12 | 2023-12-08 | 长沙理工大学 | Self-adaptive friction pendulum support based on electromagnetic control and resetting method |
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