CN213836277U - Novel friction pendulum type shock absorption and isolation support - Google Patents
Novel friction pendulum type shock absorption and isolation support Download PDFInfo
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- CN213836277U CN213836277U CN202021912259.0U CN202021912259U CN213836277U CN 213836277 U CN213836277 U CN 213836277U CN 202021912259 U CN202021912259 U CN 202021912259U CN 213836277 U CN213836277 U CN 213836277U
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Abstract
The utility model discloses a novel shock insulation support is subtracted to friction pendulum-type, including last bedplate and lower bedplate, go up the bedplate and be equipped with the sliding seat down between the bedplate, the sliding seat is the plane and can relative slip with the contact surface of last bedplate, and the sliding seat is the second curved surface and can rotate relatively with the contact surface of bedplate down, and one side or two are rough surface in the second curved surface for plane sliding friction coefficient between sliding seat and the last bedplate is less than the second curved surface rotational friction coefficient between sliding seat and the lower bedplate. The utility model discloses each glide plane adopts different coefficient of friction for the support can exert different performance bearing different horizontal force down.
Description
Technical Field
The utility model relates to a bridge engineering technical field, concretely relates to novel shock attenuation isolation bearing of friction pendulum-type.
Background
At present, the common vibration reduction and isolation support at home and abroad mainly comprises a high-damping vibration isolation rubber support, a lead core vibration isolation rubber support, a friction pendulum vibration reduction and isolation support and the like. The high-damping shock-insulation rubber support and the lead-core shock-insulation rubber support are short in service life and low in bearing capacity due to the fact that rubber is easy to age, and are often only suitable for bridges with medium and small spans.
The plane slip and the two curved surface pivoted coefficients of friction of shock insulation support are all the same to current conventional hyperboloid type friction pendulum for the support can not exert different performance under different operating modes, and the undersetting board circumference of current hyperboloid friction pendulum support all is connected with the stopper through shear bolt, and after shear bolt fracture, the bolt is left over in the undersetting board, makes the difficult change of stopper maintain.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a novel friction pendulum-type subtracts isolation bearing for the different performance of bearing can be exert under the effect of different horizontal forces to the support.
In order to solve the technical problem, the utility model discloses a following scheme:
the utility model provides a novel shock insulation support is subtracted to friction pendulum formula, includes bedplate and lower bedplate, goes up the bedplate and is equipped with the sliding seat down between the bedplate, the sliding seat is the plane and can the relative slip with the contact surface of last bedplate, and the sliding seat is the second curved surface and can rotate relatively with the contact surface of bedplate down, and one side or two are rough surface in the second curved surface for the plane sliding friction coefficient between sliding seat and the last bedplate is less than the coefficient of rotational friction between sliding seat and the lower bedplate.
By adopting the technical scheme, one or two surfaces of the second curved surface are rough surfaces, so that the rotational friction coefficient of the second curved surface is larger than the planar sliding friction coefficient between the sliding seat and the upper seat plate, under the working condition of normal use, the contact surface of the upper seat plate and the sliding seat is in a planar structure, the upper seat plate performs planar sliding, does not generate vertical displacement and generate secondary internal force on a hyperstatic structure, overcomes the defect that the conventional hyperboloid friction pendulum seismic reduction and isolation support generates secondary internal force, has larger rotational friction coefficient of the second curved surface, and cannot perform relative sliding between the sliding seat and the lower seat plate when the planar sliding occurs between the upper seat plate and the sliding seat, so that the support can adapt to normal temperature and creep deformation, simultaneously plays a seismic reduction and isolation role, and the horizontal force is increased and is larger than the rotational friction force between the sliding seat and the lower seat plate, consumption earthquake produced kinetic energy through the pendulum-type slip between sliding seat and the lower bedplate this moment, reach absorbing purpose, bedplate circumference does not set up shear block down, just can not have the condition of shear bolt fracture in the bedplate down, need not to consider shear bolt update maintenance's problem, the utility model discloses in through different coefficient of friction's rational design for the support exerts different damping performance under bearing different horizontal force condition, separates the glide plane under the normal use operating mode and the glide plane under the earthquake operating mode, embodies the friction demand separation of difference, has satisfied the friction demand of difference under the different operating mode, has improved the security of bridge.
Preferably, the sliding seat includes relative spherical crown and the middle bedplate that sets up and be the steel construction, and the contact surface of spherical crown and middle bedplate is first curved surface and ability relative rotation, and the rotational friction coefficient between spherical crown and middle bedplate is between plane sliding friction coefficient and second curved surface rotational friction coefficient.
Due to the adoption of the technical scheme, the spherical crown and the middle seat plate are both of a steel structure, the rubber shock isolation device is prevented from being poor in durability, low in bearing capacity and limited in adaptability, the rotational friction coefficient of the first curved surface is arranged between the rotational friction coefficient of the plane sliding friction coefficient and the second curved surface, the horizontal stress conditions of the support under different working conditions are further separated, when the horizontal force is greater than the friction force between the sliding seat and the upper seat plate and is not enough to overcome the friction force between the sliding seat and the lower seat plate, the kinetic energy generated by earthquake is consumed by the spherical crown and the middle seat plate through pendulum sliding, the support forms multistage friction energy consumption, the better shock isolation effect is achieved, the adaptive condition is more complex, and the bridge is protected.
Preferably, the spherical crown bottom surface is convex spherical surface, and middle bedplate top surface is the concave spherical surface with convex spherical surface adaptation, is equipped with the sphere slide between convex spherical surface and the concave curved surface, and the sphere slide part embedding is in concave spherical surface, and the sphere slide is polytetrafluoroethylene material and for the spherical shell shape, and the wearability between sphere crown and the middle bedplate is strengthened to the sphere slide for it is more nimble to rotate, and pendulum-type slip power consumption effect is better, and the sphere slide of polytetrafluoroethylene material has good wear-resisting shape, has improved the life of sphere slide greatly.
Preferably, be equipped with the plane slide between spherical crown and the last bedplate, the plane slide part embedding is in spherical crown top surface, and the plane slide is polytetrafluoroethylene material and be plane shape, and the plane slide strengthens the wearability between spherical crown and the last bedplate, and the plane slides more in a flexible way, and the energy consumption effect of sliding is better.
Preferably, be equipped with the shock attenuation slide between middle bedplate and the lower bedplate, the shock attenuation slide part imbeds in middle bedplate bottom surface, and the shock attenuation slide is polytetrafluoroethylene material and for the curved surface shape, and the shock attenuation slide has strengthened wear resistance between middle bedplate and the lower bedplate, has the shock attenuation effect simultaneously for swing between middle bedplate and the lower bedplate is more nimble, and pendulum-type slip energy consumption effect is better.
Preferably, the upper seat plate is circumferentially provided with a limiting block protruding downwards so as to prevent the upper seat plate from sliding off the sliding seat, and realize the limiting and beam falling preventing functions.
Preferably, the limiting block and the upper seat plate are of an integrally formed or spliced combined structure, and processing and installation are facilitated.
The utility model discloses beneficial effect who has:
1. the rotation friction coefficient of the second curved surface is larger than the plane sliding friction coefficient between the upper seat plate and the sliding seat, when the plane sliding occurs between the upper seat plate and the sliding seat, the sliding seat and the lower seat plate cannot slide relatively at the same time, so that the support can adapt to normal temperature and creep deformation, and simultaneously has the functions of shock absorption and shock isolation, the horizontal force is increased and is larger than the rotation friction force between the sliding seat and the lower seat plate under the action of earthquake force, at the moment, the kinetic energy generated by earthquake is consumed between the sliding seat and the lower seat plate through pendulum sliding, the purpose of shock absorption is achieved, through the reasonable design of different friction coefficients, the support can exert different shock absorption performances under the condition of bearing different horizontal forces, the sliding surface under the normal use working condition is separated from the sliding surface under the earthquake working condition, different friction requirements are separated, and different friction requirements under different working conditions are met, the safety of the bridge is improved.
2. In daily working conditions, because the contact surface of the upper seat plate and the sliding seat is of a planar structure, the upper seat plate slides in a plane, vertical displacement cannot be generated, secondary internal force cannot be generated on an hyperstatic structure, and the defect that the conventional hyperboloid friction pendulum seismic reduction and isolation support generates the secondary internal force is overcome;
3. the anti-shear stop block is not arranged in the circumferential direction of the lower seat plate, the condition that the anti-shear bolt is broken in the lower seat plate can be avoided, the problem of updating and maintaining the anti-shear bolt is not needed to be considered, the downward convex limiting block is arranged on the upper seat plate, the sliding seat and the support plate can be effectively prevented from sliding off, and the limiting and anti-falling function can be effectively realized.
4. The rotational friction coefficient of first curved surface sets up between the rotational friction coefficient of plane friction coefficient and second curved surface, further separate the horizontal atress situation of support under different operating modes, when horizontal power is greater than the frictional force between sliding seat and the last bedplate, but when being not enough to overcome the frictional force between sliding seat and the bedplate down, the kinetic energy that the ball crown and middle bedplate produced through pendulum-type slip consumption earthquake this moment, make the support form multistage friction power consumption, have better shock attenuation and isolation effect, the more complicated environment of adaptation condition, more do benefit to the protection bridge.
5. The device is formed by processing steel, and the defects of poor durability, low bearing capacity and limited adaptability of the rubber shock isolation device are overcome.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the structure of the sliding device;
FIG. 3 is a schematic structural view of the spherical cap sliding relative to the middle seat plate;
fig. 4 is a schematic structural view of the middle seat plate sliding relative to the base plate.
Reference numerals: 1-upper seat plate, 2-lower seat plate, 3-spherical crown, 4-middle seat plate, 5-plane, 6-first curved surface, 7-second curved surface, 8-plane sliding plate, 9-spherical sliding plate, 10-damping sliding plate and 11-limiting block.
Detailed Description
The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1-4, a novel friction pendulum type vibration damping and isolating support comprises an upper seat plate 1 and a lower seat plate 2, a sliding seat is arranged between the upper seat plate 1 and the lower seat plate 2, the contact surface of the sliding seat and the upper seat plate 1 is a plane 5 and can slide relatively, the contact surface of the sliding seat and the lower seat plate 2 is a second curved surface 7 and can rotate relatively, one surface or two surfaces of the second curved surface 7 are rough surfaces, so that the rotational friction coefficient of the second curved surface 7 is greater than the planar sliding friction coefficient between the sliding seat and the upper seat plate 1, in the embodiment, the top surface of the lower seat plate 7 is rough surfaces, under the normal use condition, because the contact surface of the upper seat plate 1 and the sliding seat is a planar structure, the upper seat plate 1 can slide in a planar manner, the vertical displacement can not be generated, the secondary internal force can not be generated on an hyperstatic structure, and the defect that the conventional hyperboloid type friction pendulum type vibration damping and isolating support generates the secondary internal force can not be overcome, the second curved surface 7 has a large rotational friction coefficient, when the planar sliding occurs between the upper seat plate 1 and the sliding seat, the sliding seat and the lower seat plate 2 will not slide relatively, so that the support can adapt to normal temperature and creep deformation, and simultaneously play a role of shock absorption and isolation, the horizontal force is increased under the action of seismic force and is larger than the rotational friction force between the sliding seat and the lower seat plate 2, at this time, the kinetic energy generated by earthquake is consumed between the sliding seat and the lower seat plate 2 through pendulum sliding, so as to achieve the purpose of shock absorption, the shear resistant stop block is not arranged in the circumferential direction of the lower seat plate 2, so that the situation that the shear resistant bolt is broken in the lower seat plate can not exist, and the problem of updating and maintenance of the shear resistant bolt is not needed to be considered, in the utility model, through the reasonable design of different friction coefficients, the support can exert different shock absorption performances under the condition of bearing different horizontal forces, the sliding surface under the normal use working condition is separated from the sliding surface under the earthquake working condition, the friction requirements are separated and embodied, different friction requirements under different working conditions are met, and the safety of the bridge is improved.
Example 2
On the basis of the above embodiment, as shown in fig. 3, the spherical crown 3 and the middle seat plate 4 are both made of steel structures, which avoids the defects of poor durability, low bearing capacity and limited adaptability of rubber shock insulation devices, the contact surface between the spherical crown 3 and the middle seat plate 4 is the first curved surface 6 and can relatively rotate, the rotational friction coefficient of the first curved surface 6 is set between the plane friction coefficient and the rotational friction coefficient of the second curved surface 7, the horizontal stress conditions of the support under different working conditions are further separated, when the horizontal force is greater than the friction force between the sliding seat and the upper seat plate 1 but is not enough to overcome the friction force between the sliding seat and the lower seat plate 2, the spherical crown 3 and the middle seat plate 4 consume the earthquake kinetic energy through pendulum sliding, so that the support forms multi-stage friction energy consumption, has better shock insulation effect, and adapts to the environment with more complex conditions, the bridge is protected more easily.
Example 3
On the basis of the above embodiment, as shown in fig. 1, the bottom surface of the spherical crown 3 is a convex spherical surface, the top surface of the middle seat plate 4 is a concave spherical surface adapted to the convex spherical surface, a spherical sliding plate 9 is arranged between the convex spherical surface and the concave curved surface, part of the spherical sliding plate 9 is embedded in the concave spherical surface, the spherical sliding plate 9 is made of polytetrafluoroethylene and is in a spherical shell shape, the spherical sliding plate 9 enhances the wear resistance between the spherical crown and the middle seat plate, so that the rotation is more flexible, the pendulum sliding energy consumption effect is better, the spherical sliding plate 9 made of polytetrafluoroethylene has a good wear-resistant shape, and the service life of the spherical sliding plate 9 is greatly prolonged.
Be equipped with plane slide 8 between spherical crown 3 and upper seat board 1, plane slide 8 part embedding is in spherical crown 3 top surface, and plane slide 8 is polytetrafluoroethylene material and is the plane shape, and the wearability between plane slide 8 reinforcing spherical crown and the upper seat board 1, and the plane slides more in a flexible way, and the energy consumption effect of sliding is better.
Be equipped with shock attenuation slide 10 between middle bedplate 4 and lower bedplate 2, shock attenuation slide 10 part embedding is in middle bedplate 4 bottom, and shock attenuation slide 10 is the polytetrafluoroethylene material and for the curved surface shape, and shock attenuation slide 10 has strengthened wear resistance between middle bedplate 4 and the lower bedplate 2, has the shock attenuation effect simultaneously for swing between middle bedplate 4 and the lower bedplate 2 is more nimble, and the pendulum-type slip energy consumption effect is better.
Example 4
On the basis of above-mentioned embodiment, as shown in fig. 1, be equipped with bellied stopper 11 downwards in last bedplate 1 circumference for prevent that upper base plate 1 from the sliding seat landing, realize spacing and prevent the roof beam function that falls, stopper 11 and upper base plate 1 be integrated into one piece or concatenation integrated configuration, convenient processing and installation.
The principle of the utility model is as follows: under the normal use operating mode, because the upper seat board 1 is planar structure with the sliding seat contact surface, what the upper seat board 1 took place is that the plane slides, can not produce vertical displacement, can not produce inferior internal force to hyperstatic structure, has overcome conventional hyperboloid type friction pendulum and has subtracted the not enough that shock insulation support produced inferior internal force, and the contact surface coefficient of friction between sliding seat and the upper seat board 1 is minimum, takes place relative slip between sliding seat and the upper seat board 2 for the support can adapt to normal temperature, creep and warp, plays simultaneously and subtracts the shock insulation effect.
Under the earthquake operating mode, the horizontal force grow that the support received, when the horizontal force is greater than the frictional force between sliding seat and the seat board 1, but when being not enough to overcome the frictional force between sliding seat and the seat board 2 down, the kinetic energy that the earthquake produced is consumed through pendulum-type slip to spherical crown 3 and middle seat board 4 this moment, plays and subtracts the shock insulation effect. When the earthquake power is bigger, be enough to overcome the frictional force between sliding seat and the lower bedplate 2, the kinetic energy that the earthquake produced is consumed through the pendulum-type slip between sliding seat and the lower bedplate 2 this moment, reach absorbing purpose, through different coefficient of friction's rational design, make the support exert different shock-absorbing capacity under bearing different horizontal force condition, the glide plane under with the normal use operating mode is separated with the glide plane under the earthquake operating mode, the friction demand separation embodiment of difference, different friction demand under the different operating mode has been satisfied, make the support form multistage friction power consumption, better shock attenuation and isolation effect has, the environment that the adaptation condition is more complicated, the security of bridge has been improved.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.
Claims (7)
1. The utility model provides a novel shock insulation support is subtracted to friction pendulum formula, its characterized in that, includes upper seat board (1) and lower bedplate (2), is equipped with the sliding seat between upper seat board (1) and lower bedplate (2), the sliding seat is plane (5) and can relative slip with the contact surface of upper seat board (1), and the contact surface of sliding seat and lower bedplate (2) is second curved surface (7) and can relative rotation, and one side or two are the rough surface in second curved surface (7) for the plane sliding friction coefficient between sliding seat and the upper seat board (1) is less than the rotational friction coefficient of second curved surface (7) between sliding seat and lower bedplate (2).
2. The novel friction pendulum type seismic mitigation and isolation bearing according to claim 1, wherein the sliding seat comprises a spherical crown (3) and a middle seat plate (4) which are oppositely arranged and are both made of steel, the contact surface between the spherical crown (3) and the middle seat plate (4) is a first curved surface (6) and can rotate relatively, and the rotational friction coefficient between the spherical crown (3) and the middle seat plate (4) is between the plane sliding friction coefficient and the rotational friction coefficient of a second curved surface (7).
3. A novel friction pendulum type seismic mitigation and isolation bearing as claimed in claim 2, wherein said bottom surface of said spherical crown (3) is a convex spherical surface, said top surface of said middle seat plate (4) is a concave spherical surface adapted to said convex spherical surface, a spherical sliding plate (9) is disposed between said convex spherical surface and said concave spherical surface, said spherical sliding plate (9) is partially embedded in said concave spherical surface, said spherical sliding plate (9) is made of teflon and is in the shape of spherical shell.
4. A novel friction pendulum type seismic mitigation and isolation bearing according to claim 2, characterized in that a planar sliding plate (8) is arranged between the spherical crown (3) and the upper seat plate (1), the planar sliding plate (8) is partially embedded in the top surface of the spherical crown (3), and the planar sliding plate (8) is made of polytetrafluoroethylene and is planar.
5. A novel friction pendulum type seismic mitigation and isolation bearing according to claim 2, wherein a damping sliding plate (10) is arranged between the middle seat plate (4) and the lower seat plate (2), the damping sliding plate (10) is partially embedded in the bottom surface of the middle seat plate (4), and the damping sliding plate (10) is made of polytetrafluoroethylene and is in a curved surface shape.
6. The novel friction pendulum seismic mitigation and isolation bearing according to claim 1, wherein said upper seat plate (1) is circumferentially provided with a downwardly protruding stopper (11).
7. The novel friction pendulum seismic mitigation and isolation bearing according to claim 6, wherein the limiting block (11) and the upper seat plate (1) are formed integrally or in a splicing combination structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912259.0U CN213836277U (en) | 2020-09-04 | 2020-09-04 | Novel friction pendulum type shock absorption and isolation support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021912259.0U CN213836277U (en) | 2020-09-04 | 2020-09-04 | Novel friction pendulum type shock absorption and isolation support |
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| Publication Number | Publication Date |
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| CN213836277U true CN213836277U (en) | 2021-07-30 |
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| CN202021912259.0U Active CN213836277U (en) | 2020-09-04 | 2020-09-04 | Novel friction pendulum type shock absorption and isolation support |
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| CN (1) | CN213836277U (en) |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: No. 669, Xingyuan 10 road, a district, Xinjin Industrial Park, Chengdu, Sichuan 610000 Patentee after: Jitong Intelligent Equipment Co.,Ltd. Patentee after: CHINA RAILWAY DESIGN Corp. Address before: No. 669, Xingyuan 10 road, a district, Xinjin Industrial Park, Chengdu, Sichuan 610000 Patentee before: CHENGDU JITONG ROAD AND BRIDGE TECHNOLOGY CO.,LTD. Patentee before: CHINA RAILWAY DESIGN Corp. |
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| CP01 | Change in the name or title of a patent holder |