CN206873281U - Bridge pad - Google Patents
Bridge pad Download PDFInfo
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- CN206873281U CN206873281U CN201720651807.0U CN201720651807U CN206873281U CN 206873281 U CN206873281 U CN 206873281U CN 201720651807 U CN201720651807 U CN 201720651807U CN 206873281 U CN206873281 U CN 206873281U
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- plate
- bridge pad
- magnetic part
- magnetic
- lower support
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Abstract
The utility model discloses a kind of bridge pad, including upper bracket plate and lower support plate, and the first friction structure between upper bracket plate and lower support plate, first friction structure includes plane polyfluortetraethylene plate and the plane stainless steel plate being stacked on the plane polyfluortetraethylene plate, upper bracket plate is placed with the first magnetic part around the first friction structure, and lower support plate then aligns the first magnetic part and is provided with the second magnetic part；The first magnetic part magnetic pole same sex relative with the second magnetic part；The bridge pad also includes being used for the correction part corrected that misplaces to the first magnetic part and the second magnetic part, and the upper end of the correction part is fixedly connected on upper bracket plate, and lower end is fixedly connected on lower support plate.It is long according to bridge pad service life of the present utility model.
Description
Technical field
It the utility model is related to a kind of bridge pad.
Background technology
Bridge pad has polytype, such as spherical bearing, laminated rubber bearing, pot rubber bearing etc., bridge pad
Effect mainly have at 2 points, one is by bridge load（Dynamic load and static load）Bridge pier is effectively passed to, second it is to overcome
Beam body because by brake force, environment temperature, concrete shrinkage or creep and load effect etc. caused by beam body caused by displacement it is inclined
Pressure.Such as it is horizontal in pontic, if because environment temperature changes, cause the beam body length of side, and the spacing between pier stud is constant, if
It is rigid connection between beam body and pier stud, then rigidly connected part is possible to be cut or beam body is produced to coupling part
Raw very big shearing force.Bridge pad then makes beam body malleation as far as possible on pier stud.
Because the attachment structure between bridge and pier stud not only needs the displacement in face of horizontal direction, can also become because of vertical compression
Shape or different piece amplitude of deformation it is inconsistent and produce corner deformation, thereby produce not only meet adapt to movement and deformation again adaptation
The rolling spherical bearing of rotational deformation.
Displacement for horizontal direction, such as spherical bearing are used to play between beam body and bridge pier and transmit load and displacement
One friction pair, realizes the transmission of displacement, and the friction pair is formed by plane stainless steel plate and plane polyfluortetraethylene plate, displacement
It is plane stainless steel plate caused by transmission with plane polyfluortetraethylene plate to mill.Due to such as beam body, very big, institute of conducting oneself with dignity
The caused larger lower pressure that compares, makes the frictional force between plane stainless steel plate and plane polyfluortetraethylene plate very big.Ball
The action of type bearing is very frequently, such as to be changed by environment temperature, or even heavy vehicle makes ball-type by being likely to
Bearing acts, and polyfluortetraethylene plate can fail because producing excessive wear, have a strong impact on the life-span of bearing.
Popularization and application of the success of magnetic levitation technology ON TRAINS to magnetic levitation technology, which generate, compares active influence, hair
A person of good sense attempts to magnetic suspension principle, reduces the abrasion of polyfluortetraethylene plate.
On application of the magnetic part on bridge pad, relatively more is applied in engineering practice, such as China
Patent document CN204509985U, it utilizes the change of magnetic force between the permanent magnet for aligning setting on bridge pad in lower support plate,
Counterbalance effect is played, bridge pad is not produced deformation because external force acts on.The patent document does not provide its invention clearly
Principle, analyzed through inventor, its principle is about utilizing the mutual exclusion between permanent magnet, and when bridge is to side tilting, the side is forever
Distance between magnet diminishes, and repulsive interaction becomes big, so as to play balanced action.Magnetic part is in Chinese patent literature
Application on CN204509985U requires higher to the aligning accuracy permanent magnet, and is not suitable for producing horizontal displacement
Bridge pad, the repulsive interaction that dislocation can be only produced between permanent magnet after all diminishes, without producing balanced action.
Relative to Chinese patent literature CN204509985U, it is also applied to using the bridge pad mutually inhaled between magnetic part
In engineer applied, such as Chinese patent literature CN204690585U, it utilizes the attraction between magnet, improves the stability of structure.
However, the suction between magnet can increase the normal pressure between lower support plate, the abrasion of polyfluortetraethylene plate can be further speeded up.
Also applied in addition, carrying out shock insulation using magnetic levitation technology in engineering, it is inner such as Chinese patent literature
CN101545291A, it makes physically to disengage between structure using magnetic levitation technology, so as to cut-off seismic wave（It is a kind of
Mechanical wave）Effect.But it should be recognized that physically disengaging, the response to horizontal movement becomes strong, how to ensure, for example, that bridge
The stability of bearing is urgent problem.In addition, the application in engineering, is not necessarily suitable science of bridge building, after all for
Such as the building in Chinese patent literature CN101545291A, it need not consider the lateral displacement of superstructure part.
Utility model content
The purpose of this utility model is to provide a kind of service life relatively long bridge pad.
According to embodiment of the present utility model, there is provided a kind of bridge pad, including upper bracket plate and lower support plate, Yi Jijie
The first friction structure between upper bracket plate and lower support plate, first friction structure include plane polyfluortetraethylene plate and are stacked
Plane stainless steel plate on the plane polyfluortetraethylene plate, upper bracket plate are placed with the first magnetic portion around the first friction structure
Part, lower support plate then align the first magnetic part and are provided with the second magnetic part；
The first magnetic part magnetic pole same sex relative with the second magnetic part；
The bridge pad also includes being used for the correction part corrected that misplaces to the first magnetic part and the second magnetic part,
The upper end of the correction part is fixedly connected on upper bracket plate, and lower end is fixedly connected on lower support plate.
Above-mentioned bridge pad, alternatively, the correction part is cylindrical spring part.
Alternatively, the upper end of cylindrical spring part is fixedly connected by the first magnetic part with upper bracket plate；
Correspondingly, the lower end of cylindrical spring part is fixedly connected by the second magnetic part with lower support plate.
Alternatively, the first magnetic part is provided with the upper jack for being connected with cylindrical spring part, and the second magnetic part is opened
There is the lower jack for being connected with cylindrical spring part.
Alternatively, first magnetic part and second magnetic part are electromagnet.
Alternatively, the power supply of the drive circuit of electromagnet is solar cell.
Alternatively, if bridge pad is one-way movable support, correction part is arranged on activity direction or parallel to work
Lay in dynamic direction；
If bridge pad is multidirectional movable bearing support, correction part is laid around the first friction structure.
Alternatively, the spacing for correcting part is not less than 10cm, and is not more than 30cm.
Alternatively, the bridge pad is ball-type bridge pad, correspondingly, the spherical crown liner plate of ball-type bridge pad and lower branch
The second friction structure is formed between seat board.
Alternatively, the second friction structure includes the curved surface polyfluortetraethylene plate for being fitted in lower support plate ball-and-socket surface and is equipped with
Curved surface stainless steel plate on upper bracket plate bulb.
According to embodiment of the present utility model, the active force between the first magnetic part and the second magnetic part is bridge pad
Between interior active force, the burden of lower support plate will not be increased；Meanwhile the first magnetic part and the second magnetic are based between upper lower support plate
Property repelling each other for part can effectively mitigate the burden of the first friction structure, so as to which the service life of bridge pad has significantly
Extend.When the first magnetic part and the second magnetic part misplace, unstability can be produced, by correcting part, in applied external force
As a child, generation automatically reset, and ensured the stability of bridge pad.
Brief description of the drawings
Fig. 1 is to longitudinally-moving bearing half section structure diagram in an embodiment along bridge.
Fig. 2 is direction across bridge longitudinally-moving bearing half section structure diagram in an embodiment.
Fig. 3 is the laterally movable bearing half section structure diagram of direction across bridge in an embodiment.
Fig. 4 is to laterally movable bearing half section structure diagram in an embodiment along bridge.
Fig. 5 is multidirectional movable bearing support half section structure diagram in an embodiment.
In figure：1. solar cell, 2. dust-proof coaming plates, 3. coils, 4. correction sticks, 5. sealing rings, 6. sealing rings, prop up on 7.
Seat board, 8. plane stainless steel plates, 9. plane polyfluortetraethylene plates, 10. spherical crown liner plates, 11. bolts, 12. bolts, 13. undersettings
Plate, 14. curved surface stainless steel plates, 15. curved surface polyfluortetraethylene plates, 16. superconducting magnets.
Embodiment
It is the most complicated with ball-type bridge pad in bridge pad, illustrated below by taking ball-type bridge pad as an example, ability
The technical staff in domain is easy in other kinds of bridge branch by the explanation of the purpose of following ball-type bridge pad, function and means
On seat identical purpose or function are realized using same or similar means.
Figure of description 1 ~ 5 is related to 5 kinds of ball-type bridge pads, has the point shape structure of bridge pad, i.e. up-down structure, its
Basic structure includes being used for the upper bracket plate 7 being fixedly connected with such as beam body, for the undersetting being fixedly connected with such as pier stud
Plate 13, and upper bracket plate 7 is carried into down compressive load and marries again the slide construction of lower support plate 13 friction structure in other words, it is sliding
Non- vertical force is mainly weakened or eliminated dynamic structure by friction structure in other words, for example, beam body because environment temperature raise and elongated, bridge
Relative slip of the beam support based on slide construction, eliminate or weaken elongated caused load（Because stiction be present,
In most cases, can not be completely eliminated）.
As shown in figure 1, although bridge pad is not proper axially symmetric structure, but its construction is with shown in scheming
Two friction structures centered on, the first friction structure is friction structure located above, as illustrated in the drawing plane stainless steel
Plate 8 and plane polyfluortetraethylene plate 9 are formed, for providing sliding, to hedge expanding with heat and contract with cold for such as beam body.Second friction
Structure is then the friction structure between spherical crown liner plate 10 and lower support plate 13 as illustrated in the drawing, by the curved surface stainless steel shown in figure
Plate 14 and curved surface polyfluortetraethylene plate 15 are formed, to provide rotation.
As it was previously stated, the frequency that the first friction structure acts relative to the second friction structure is higher, and belong to heavily loaded friction
Pair, the plane polyfluortetraethylene plate 9 formed in the plane stainless steel plate 8 of plane polyfluortetraethylene plate 9 of the first friction structure belong to
Conventional skateboard part, polytetrafluoroethylene (PTFE) is relative to steel, based on friction, it is easier to fails.
In general, plane polyfluortetraethylene plate 9 is inlaid in the recessed of the upper surface of spherical crown liner plate 10 formation shown in Fig. 1
Groove, plane stainless steel plate 8 are fixed on the lower surface of upper bracket plate 7, and plane stainless steel plate 8 is stacked in plane polyfluortetraethylene plate 9
It is upper to form first friction structure.
The other structures of bridge pad are set mainly around two friction structures, typically, such as the sealing shown in Fig. 1
Circle 5 and sealing ring 6, make two friction structures be in the state of relative closure.
A certain amount of lubricant can also be enclosed in two friction structures, lubricant can use fluid lubricant,
Solid lubricant, such as graphite can be used, can also be lipid lubricant, such as lithium saponify.
Belong to the carrying that face engagement is realized between plane polyfluortetraethylene plate 9 and plane stainless steel plate 8, mill frictional force is removed
Have outside the Pass with coefficient of friction, such as improve friction environment by enclosing a certain amount of lubricant, reduce coefficient of friction, may be used also
With by mitigating the normal pressure between composition surface, to reduce frictional force.
And then referring to Figure of description 1 ~ 4, it is visible in figure, coil 3, coil 3 are provided with least symmetrical position
For representing electromagnet, the laying scope of coil 3 should have certain centre of form, the centre of form and the gravity after the load-carrying of upper bracket plate 7
On line, or substantially in this gravity vertical, this is perfect condition, is the state for needing to ensure as far as possible, rather than inevitable
State.
In view of this, such as arrangement of the coil 3 in upper bracket plate is arranged around the centre of form, and determines the structure of the centre of form
Then include the first foregoing friction structure, and the second friction structure.Represented by such as coil 3 of the note in upper bracket plate 7
Magnetic part be the first magnetic part, note is the in the lower support plate 13 and with the magnetic part of the first magnetic part contraposition
Two magnetic parts.
Based on above-mentioned principle, by reducing the normal pressure of the first friction structure, so as to reduce the first friction structure
Between frictional force.Accordingly, it is desirable to the magnetic pole same sex that the first magnetic part is relative with the second magnetic part, produces mutual repulsion effect,
To balance out the gravity of part upper bracket plate 7, gravity more acts directly on lower support plate based on active force and reaction force
On 13.
A pair of relative opposite poles can produce the reaction force to magnetic pole pairing direction, when slightly off normal, repulsive interaction
It can deflect the magnetic pole of relative motion, so as to produce unstability.In view of this, it is necessary to configure the part for preventing unstability, it is mainly used in
Hedge because of tilting moment caused by upper lower magnetic pole off normal.Balance mode is based on restoring force caused by the deformation of itself.Tool
Body, configuration correction part, correction part first condition is that the upper end of the correction part is fixedly connected on upper bracket plate 7, lower end
Lower support plate 13 is fixedly connected on, after upper bracket plate 7 and the dislocation of lower support plate 13, correction part can be pulled, correction part is standby
Restoring force can be produced after preceding drawing, reacts on upper bracket plate 7, resets upper bracket plate 7, so that upper lower magnetic pole re-registrates.
During upper lower support plate staggers, pulled by correction part, will not produce and topple.
The correction part is preferably cylindrical spring part, and correction stick 4 as shown in Figure 1, cylindrical spring part can be with
Made using spring steel, the bigger rubber of stiffness factor can also be used to make, comparatively, the stiffness factor of spring steel is not
It is that rubber can compare, so as to overall compact dimensions, for some small-sized bridge pads, adopt
, can be using maximum 9cm spring steel column for the bridge pad of some relatively large-scales with a diameter of 3cm spring steel column.
In a preferred embodiment, the upper end of cylindrical spring part is fixed by the first magnetic part and upper bracket plate 7 and connected
Connect.
Correspondingly, the lower end of cylindrical spring part is fixedly connected by the second magnetic part with lower support plate 13.
For magnetic part, generally with certain intensity, in particular, for example electromagnet, it has iron core, and for forever
Magnet, its hardness is higher, but more crisp, can use annular permanent magnet, cylindrical spring part is via annular permanent magnet
Endoporus be fixed on upper bracket plate 7.
Determined in addition, the cylindrical spring part being fixedly mounted in upper bracket plate 7 is additionally operable to such as annular permanent magnet
Position, so that magnetic part is more easily positioned up and down.
And then when magnetic part itself has higher intensity, for example with electromagnet, utilize its iron core intensity ratio
The characteristics of higher, the installing matrix of magnetic part is used as by the use of iron core.And then when magnetic part is with higher intensity
When, the first magnetic part is provided with the upper jack for being connected with cylindrical spring part, and the second magnetic part, which is provided with, to be used for and column
The lower jack of elastomeric element connection, reduce the length of cylindrical spring part.
Therefore, based on foregoing description, the specifically structure suitable for the connection of cylindrical spring part, first magnetic part
It is preferably electromagnet with second magnetic part.
Using the consideration of electromagnet yet another aspect, it is that easy magnetic weakens permanent magnet under certain conditions, very
To disappearance, such as high temperature, the disappearance of permanent magnetism ferromagnetism can be directly resulted in, besides shakes, permanent magnetism is also resulted in when shaking bigger
Iron disappears.
Comparatively, some bridges often bear the vibrations more than comparison, for example, heavy vehicle by when such as height
Metal bridge beam, permanent magnetism ferromagnetism can gradually weaken.
Using electromagnet can effectively eliminate because magnetic force caused by temperature, vibrations weaken the problem of, so as to more
Applicability well.
Preferably, the power supply of the drive circuit of electromagnet is solar cell 1, and the drive circuit may be equipped with electric power storage
Pond, electric energy is provided for electromagnet for lasting.
For bridge, its side often has bigger heating surface, generally left unused extensively at present, solar cell 1
It can be installed using the position that bridge limits, additional space will not be occupied.
Fig. 1 ~ Fig. 5 shows five kinds of basic model bridge pads, and some bridge pads are one-way movements, such as shown in Fig. 1
Along bridge to longitudinally-moving bearing, for such bridge pad, i.e. one-way movable support, then correct part be arranged on activity direction or
Person lays parallel to activity direction, has more preferable specific aim.
, it is necessary to be divided into two groups of correction parts when being laid parallel to activity direction, this two groups symmetrical on activity direction.
If bridge pad is multidirectional movable bearing support, multidirectional movable bearing support as shown in Figure 5, then corrects part and rubbed around first
Structure is wiped to lay.
Correction part needs to have suitable density, can effectively avoid unstability, the spacing for correcting part is not preferably greater than
30cm, otherwise can influence the stability of bridge pad, be not easy to it is too small, it is too small to produce unnecessary waste, and can occupy
Compare more installing spaces.Therefore, the spacing for correcting part is not preferably less than 10cm.
Bearing shown in Fig. 1 ~ 5 is spherical bearing, and relative to other kinds of bearing, it has a spherical crown liner plate
10, usually steel structure, it is below spherical crown, coordinates with the ball-and-socket formed in lower support plate 13, be analogous to spherical hinge, so as to
With three rotational freedoms, it is adapted to the balance of such as beam body minor rotation.
Spherical cap portion can produce second friction structure with ball-and-socket, and the second friction structure includes being fitted in the ball of lower support plate 13
The curved surface polyfluortetraethylene plate 15 on nest surface and it is fitted in upper bracket plate bulb（There is provided by spherical crown liner plate 10, here serve as a contrast spherical crown
Plate 10 includes such as upper bracket plate, in favor of simplifying explanation）On curved surface stainless steel plate 14.
Claims (10)
1. a kind of bridge pad, including upper bracket plate and lower support plate, and first between upper bracket plate and lower support plate
Friction structure, first friction structure include plane polyfluortetraethylene plate and the plane being stacked on the plane polyfluortetraethylene plate
Stainless steel plate, it is characterised in that upper bracket plate is placed with the first magnetic part around the first friction structure, and lower support plate then aligns
First magnetic part and be provided with the second magnetic part；
The first magnetic part magnetic pole same sex relative with the second magnetic part；
The bridge pad also includes being used for the correction part corrected that misplaces to the first magnetic part and the second magnetic part, and this is rectified
The upper end of positive part is fixedly connected on upper bracket plate, and lower end is fixedly connected on lower support plate.
2. bridge pad according to claim 1, it is characterised in that the correction part is cylindrical spring part.
3. bridge pad according to claim 2, it is characterised in that the upper end of cylindrical spring part passes through the first magnetic portion
Part is fixedly connected with upper bracket plate；
Correspondingly, the lower end of cylindrical spring part is fixedly connected by the second magnetic part with lower support plate.
4. bridge pad according to claim 3, it is characterised in that the first magnetic part, which is provided with, to be used for and cylindrical spring portion
The upper jack of part connection, the second magnetic part are provided with the lower jack for being connected with cylindrical spring part.
5. according to any described bridge pad of claim 1 ~ 4, it is characterised in that first magnetic part and described second
Magnetic part is electromagnet.
6. bridge pad according to claim 5, it is characterised in that the power supply of the drive circuit of electromagnet is solar-electricity
Pond.
7. bridge pad according to claim 1, it is characterised in that if bridge pad is one-way movable support, correct
Part is arranged on activity direction or laid parallel to activity direction；
If bridge pad is multidirectional movable bearing support, correction part is laid around the first friction structure.
8. bridge pad according to claim 7, it is characterised in that the spacing for correcting part is not less than 10cm, and less
In 30cm.
9. bridge pad according to claim 1, it is characterised in that the bridge pad is ball-type bridge pad, accordingly
Ground, the second friction structure is formed between the spherical crown liner plate and lower support plate of ball-type bridge pad.
10. bridge pad according to claim 9, it is characterised in that the second friction structure includes being fitted in lower support plate
The curved surface polyfluortetraethylene plate on ball-and-socket surface and the curved surface stainless steel plate being fitted on upper bracket plate bulb.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720651807.0U CN206873281U (en) | 2017-06-07 | 2017-06-07 | Bridge pad |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720651807.0U CN206873281U (en) | 2017-06-07 | 2017-06-07 | Bridge pad |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206873281U true CN206873281U (en) | 2018-01-12 |
Family
ID=61338225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720651807.0U Expired - Fee Related CN206873281U (en) | 2017-06-07 | 2017-06-07 | Bridge pad |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206873281U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360367A (en) * | 2018-02-09 | 2018-08-03 | 石家庄铁道大学 | A kind of antidetonation does not fall bridge pier |
-
2017
- 2017-06-07 CN CN201720651807.0U patent/CN206873281U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108360367A (en) * | 2018-02-09 | 2018-08-03 | 石家庄铁道大学 | A kind of antidetonation does not fall bridge pier |
| CN108360367B (en) * | 2018-02-09 | 2019-06-07 | 石家庄铁道大学 | A kind of antidetonation does not fall bridge pier |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180112 Termination date: 20190607 |
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| CF01 | Termination of patent right due to non-payment of annual fee |