CN109853769A - Rail mounted becomes friction-pendulum shock-insulation support - Google Patents
Rail mounted becomes friction-pendulum shock-insulation support Download PDFInfo
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- CN109853769A CN109853769A CN201910180065.1A CN201910180065A CN109853769A CN 109853769 A CN109853769 A CN 109853769A CN 201910180065 A CN201910180065 A CN 201910180065A CN 109853769 A CN109853769 A CN 109853769A
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- 238000009413 insulation Methods 0.000 title claims abstract description 28
- 238000002955 isolation Methods 0.000 abstract description 16
- 238000000034 method Methods 0.000 abstract description 8
- 230000008569 process Effects 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 27
- 230000035939 shock Effects 0.000 description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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Abstract
The present invention relates to rail mounteds to become friction-pendulum shock-insulation support, the upper sliding rail including being equipped with card slot in bar shaped, sliding block, the lower slider track equipped with bar shaped lower bayonet slot；The top of sliding block is equipped with upper buckle and upper slide surface, the lower part of sliding block is equipped with lower buckle and lower slide surface, it is upper to be caught in card slot, it is lower to be caught in lower bayonet slot, the lower surface of upper sliding rail is equipped with the first sliding surface, the upper surface of lower slider track is equipped with the second sliding surface, upper slide surface and the contact of the first sliding surface cylinder, lower slide surface and the contact of the second sliding surface cylinder, the longitudinal center line of upper sliding rail and the longitudinal center line of lower slider track are not parallel, first sliding surface, the different frictional layer of different zones coefficient of friction is covered on second sliding surface, wearing layer is covered on upper slide surface and lower slide surface.The invention enables supports to have the test that excellent isolation property copes with different level geological processes, while reducing cost preferably to promote seismic isolation technology, belongs to technical field of isolation.
Description
Technical field
The present invention relates to technical field of isolation more particularly to a kind of rail mounted to become friction-pendulum shock-insulation support.
Background technique
Friction-pendulum shock-insulation support has many advantages, such as that bearing capacity is high, energy dissipation capacity is strong, the period is independent of superstructure,
It is widely applied in multiple engineering fields such as building, bridge.It is homogeneous that conventional friction puts shock isolating pedestal property in all directions
Together, and support can not undertake pulling force effect, this defect limits the application range of friction-pendulum shock-insulation support.In addition, including rubbing
The traditional shock isolating pedestal rigidity wiped including putting is always positive value, cannot achieve the breakthrough of shock isolating pedestal zero stiffness and negative stiffness, and
Friction-pendulum shock-insulation support volume is larger and economy is not good enough.
Summary of the invention
For the technical problems in the prior art, the object of the present invention is to provide a kind of rail mounted become friction pendulum every
Support is shaken, so that support has the test that excellent isolation property copes with different level geological processes, while reducing cost with more
Good popularization seismic isolation technology.
In order to achieve the above object, the present invention adopts the following technical scheme:
Rail mounted becomes friction-pendulum shock-insulation support, and the upper sliding rail including being equipped with card slot in bar shaped, sliding block is equipped under bar shaped
The lower slider track of card slot；The top of sliding block is equipped with upper buckle and upper slide surface, and the lower part of sliding block is equipped with lower buckle and lower sliding
Face, upper to be caught in card slot, lower to be caught in lower bayonet slot, the lower surface of upper sliding rail is equipped with the first sliding surface, under
The upper surface of sliding rail is equipped with the second sliding surface, upper slide surface and the contact of the first sliding surface cylinder, and lower slide surface and second is slided
Dynamic face cylinder contact, the longitudinal center line of upper sliding rail and the longitudinal center line of lower slider track are not parallel, the first sliding surface
On be covered with the different frictional layer of different zones coefficient of friction, the different friction of different zones coefficient of friction is covered on the second sliding surface
Layer, wearing layer is covered on upper slide surface and lower slide surface.
Further, upper sliding rail includes upper junction plate, the upper rail being fixed on upper junction plate, two pieces solid respectively
It is scheduled on the upper limit position block at upper rail both ends；The two sides of upper rail are equipped with card slot, and the first sliding surface is arranged under upper rail
Surface；
Lower slider track includes lower connecting plate, the bottom track body being fixed on lower connecting plate, and two pieces are separately fixed at bottom track body
The lower position block at both ends；The two sides of bottom track body are equipped with lower bayonet slot, and the upper surface of bottom track body is arranged in the second sliding surface；
Sliding block includes gliding mass, and two upper buckles of gliding mass upper end are arranged in, is arranged under two of gliding mass lower end and buckles；On
The upper surface of gliding mass is arranged in slide surface, and the lower end surface of gliding mass is arranged in lower slide surface, and two upper buckles are located at sliding
The two sides in face, buckle is located at the two sides of lower slide surface under two；
Two upper buckles are respectively clamped into the upper card slot of upper rail two sides, and buckle is respectively clamped into bottom track body two sides under two
In lower bayonet slot, the upper slide surface of gliding mass and the contact of the first sliding surface cylinder, the lower slide surface of gliding mass and the second sliding surface cylinder are connect
Touching.
Further, the lower slide surface of the upper slide surface of gliding mass, gliding mass, the first sliding surface, the second sliding surface are column
The width of face, the width of upper slide surface and the first sliding surface is adapted, the width of lower slide surface and the width phase of the second sliding surface
It adapts to.
Further, upper card slot and lower bayonet slot are arc-shaped slot, rubber layer, upper card are equipped in upper card slot and lower bayonet slot
The center line of slot and the first sliding surface are parallel, and the center line of lower bayonet slot and the second sliding surface are parallel.
Further, the center line of the center line of upper slide surface and lower slide surface is orthogonal, two upper arrangement sides buckled
The orientation buckled under with two is orthogonal, and the longitudinal center line of the longitudinal center line of upper sliding rail and lower slider track is just
It hands over.
Further, upper limit position block and lower position block are equipped with the flexible layer of rubber.
Further, the cross-sectional area of upper card slot is greater than the cross-sectional area of upper buckle, the cross-sectional area of lower bayonet slot is greater than
The cross-sectional area of lower buckle.
Further, the coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
It is sequentially increased from center to edge；
Alternatively, the variation of the coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
Trend is that the fixed value determined by support parameter is gradually reduced；
Alternatively, the variation of the coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
Trend is to be gradually reduced by the fixed value determined greater than support parameter.
Further, edge prepared screw-bolt hole, fixture block or the card slot of upper junction plate, the edge of lower connecting plate is reserved
Bolt hole, fixture block or card slot.
Generally speaking, the present invention has the advantage that
This rail mounted becomes friction-pendulum shock-insulation support and is connect by buckle-type sliding block with sliding surface cylinder, only reservation and sliding block etc.
Wide sliding rail, so that two-way decoupling may be implemented in support performance, pulling force cannot be undertaken by overcoming friction-pendulum shock-insulation support
Defect can make support stiffness from positive values to negative value consecutive variations by the reasonable setting of sliding surface coefficient of friction, and can be real
Existing support stiffness is zero, breach shock isolating pedestal isotropism, rigidity be always positive value confinement, support damping also occurs therewith
Variation, so that showing extremely strong adaptivity in different level geological process undersettings.In addition, compared with friction pendulum, the branch
Pedestal product reduces considerable, and economy is more preferably while obtaining excellent isolation property.A kind of two-way decoupling of performance can undertake pulling force work
It can arbitrarily be changed from positive values to negative value with, rigidity value and the rail mounted of small volume becomes friction-pendulum shock-insulation support, so that branch seat tool
Standby excellent isolation property copes with the test of different level geological processes, while reducing cost preferably to promote seismic isolation technology.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this support.
Fig. 2 is the explosive view of this support.
Fig. 3 is the hysteresis loop schematic diagram of embodiment 1.
Fig. 4 is the hysteresis loop schematic diagram of embodiment 2.
Fig. 5 is the hysteresis loop schematic diagram of embodiment 3.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
It is now attached to what is occurred in Figure of description for the ease of uniformly checking each appended drawing reference inside Figure of description
Icon note is unitedly described as follows:
1 is upper sliding rail, and 2 be sliding block, and 3 be lower slider track, and 1-1 is upper junction plate, and 1-2 is upper rail, and 1-3 is upper
Limited block, 1-4 are upper card slot, and 2-1 is gliding mass, and 2-2 is upper buckle, and 2-3 is upper slide surface, and 2-4 is lower buckle, and 3-1 is lower company
Fishplate bar, 3-2 are bottom track body, and 3-3 is lower position block, and 3-4 is lower bayonet slot, and 3-5 is the second sliding surface.
Embodiment 1
As shown in Figure 1, Figure 2, rail mounted becomes friction-pendulum shock-insulation support, the upper sliding rail including being equipped with card slot in bar shaped
Road, sliding block, the lower slider track equipped with bar shaped lower bayonet slot.The top of sliding block is equipped with upper buckle and upper slide surface, the lower part of sliding block
Equipped with lower buckle and lower slide surface (not indicated in figure), upper to be caught in card slot, lower to be caught in lower bayonet slot, upper cunning
The lower surface in dynamic rail road is equipped with the first sliding surface (not indicating in figure), and the upper surface of lower slider track is equipped with the second sliding surface,
Upper slide surface and the contact of the first sliding surface cylinder, lower slide surface and the second sliding surface cylinder contact, in the axial direction of upper sliding rail
The longitudinal center line of heart line and lower slider track is not parallel, i.e., there are angles for upper sliding rail and lower slider track.First sliding
The different frictional layer of different zones coefficient of friction, i.e. friction system of the frictional layer on different location or different zones are covered on face
Number is different, is covered with the different frictional layer of different zones coefficient of friction on the second sliding surface, i.e., the frictional layer in different location or
Coefficient of friction in different zones is different, is covered with wearing layer on upper slide surface and lower slide surface.
As shown in Figure 1, Figure 2, upper sliding rail includes upper junction plate, it is fixed on the upper rail of upper junction plate lower end surface,
Two pieces of upper limit position blocks for being separately fixed at upper rail both ends；Upper junction plate, upper rail, upper limit position block are integrally formed, upper rails
The two sides of body are equipped with card slot, and the lower surface of upper rail is arranged in the first sliding surface.
Lower slider track includes lower connecting plate, is fixed on the bottom track body of lower connecting plate upper surface, and two pieces are separately fixed at down
The lower position block at rail body both ends；Lower connecting plate, bottom track body, lower position block be it is integrally formed, the two sides of bottom track body are equipped with down
The upper surface of bottom track body is arranged in card slot, the second sliding surface.
Sliding block includes gliding mass, and two upper buckles of gliding mass upper end are arranged in, is arranged under two of gliding mass lower end and buckles.It is sliding
Body, upper buckle, lower buckle are integrally formed.The upper surface of gliding mass is arranged in upper slide surface, and gliding mass is arranged in lower slide surface
Lower end surface, two upper buckles are located at the two sides of slide surface, and buckle is located at the two sides of lower slide surface under two.
Two upper buckles are respectively clamped into the upper card slot of upper rail two sides, and upper buckle can slide in upper card slot, and two
Lower buckle is respectively clamped into the lower bayonet slot of bottom track body two sides, and lower buckle can slide in lower bayonet slot, the upper slide surface of gliding mass and
The contact of first sliding surface cylinder, the lower slide surface of gliding mass and the contact of the second sliding surface cylinder.
The upper slide surface of gliding mass, the lower slide surface of gliding mass, the first sliding surface, the second sliding surface are cylinder, upper slide surface
Width and the width of the first sliding surface be adapted, the width of the width of lower slide surface and the second sliding surface is adapted.
Upper card slot and lower bayonet slot are arc-shaped slot, are equipped with rubber layer, the center line of upper card slot in upper card slot and lower bayonet slot
Parallel with the first sliding surface, the center line of lower bayonet slot and the second sliding surface are parallel.
The center line of the center line of upper slide surface and lower slide surface is orthogonal, and two are gone up the orientations buckled and blocked under two
The orientation of button is orthogonal, such as: two upper buckles are along transversely arranged, then buckle is along longitudinal arrangement under two
, the longitudinal center line of upper sliding rail and the longitudinal center line of lower slider track are orthogonal.
The cross-sectional area of upper card slot is greater than the cross-sectional area of upper buckle, and the cross-sectional area of lower bayonet slot is greater than the transversal of lower buckle
Area.
The coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of first sliding surface and the second sliding surface is from center to side
Along being sequentially increased, i.e., coefficient of friction is to be sequentially increased from center to the variation tendency at edge (from inside to outside, center to both ends),
Explicit value is determined according to the requirement of shock design.
Upper limit position block and lower position block are equipped with the flexible layer of rubber.Edge prepared screw-bolt hole, the card of upper junction plate
Block or card slot, edge prepared screw-bolt hole, fixture block or the card slot of lower connecting plate.By reserved bolt hole, fixture block or card slot, on
Connecting plate is connect with superstructure, and lower connecting plate is connect with substructure.
The radius of curvature of upper sliding rail and lower slider track can be identical or different with coefficient of friction distribution.
Become the hysteresis loop of friction-pendulum shock-insulation support as shown in figure 3, frictional force is got over according to obtained rail mounted is designed above
The rigidity of big support is bigger, i.e., slope of a curve is bigger, and the rigidity of line obliquely is positive value, and the rigidity of line obliquely is negative value.
Under geological process, after the lateral force that a direction of structure is subject to is more than the stiction of direction support,
It is slid between sliding block and the sliding rail in this direction, thus the effect of playing isolation geological process；With earthquake intensity
Increase, sliding block from the center of sliding rail gradually to edge slide, the rail mounted become friction-pendulum shock-insulation support rigidity with cunning
The increase of block displacement and increase, the rigidity for the bigger support of rubbing is bigger, shows extremely strong adaptivity.At this point, by reasonable
Design may make the rigidity of support in Seismic Isolation of Isolation Layer to gradually increase and avoid Seismic Isolation of Isolation Layer displacement excessive, show ideal shock insulation effect
Fruit.When earthquake intensity be more than design strength to a certain degree when, sliding block can touch limited block, and the rubber being arranged on limited block is soft
Property layer play the role of buffering and certain energy consumption.In addition, the pulling force that Seismic Isolation of Isolation Layer is subject under geological process by buckle with card slot it
Between shearing resist, overcome the shortcomings that friction-pendulum shock-insulation support cannot undertake pulling force.
Embodiment 2
In addition to following technical characteristic, remaining does not refer to technical characteristic with embodiment 1.
In the present embodiment 2, the friction system of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
Several variation tendencies is that the fixed value determined by support parameter is gradually reduced；Slide up and down the coefficient of friction of track sliding surface by
Center is to reduce by the fixed value that support parameter determines to the variation tendency of edge (from inside to outside).
According to designing above, obtained rail mounted change friction-pendulum shock-insulation support hysteresis loop is as shown in Figure 4.Support is rigid at this time
Degree is zero, breaches the confinement that support stiffness is always positive value, can get extremely excellent isolating affection.
Embodiment 3
In addition to following technical characteristic, remaining does not refer to technical characteristic with embodiment 1.
In the present embodiment 3, the friction system of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
Several variation tendencies is to be gradually reduced by the fixed value determined greater than support parameter, that is, slides up and down the friction system of track sliding surface
Number is the fixed value reduction determined by support parameter is greater than from center to the variation tendency of edge (from inside to outside).
According to designing above, obtained rail mounted change friction-pendulum shock-insulation support hysteresis loop is as shown in Figure 5.Support is rigid at this time
Degree is negative value, breaches the confinement that support stiffness is always positive value, other shock isolating pedestals is cooperated to use available extremely excellent shock insulation
Effect.
The above embodiment is a preferred embodiment of the present invention, but embodiments of the present invention are not by above-described embodiment
Limitation, other any changes, modifications, substitutions, combinations, simplifications made without departing from the spirit and principles of the present invention,
It should be equivalent substitute mode, be included within the scope of the present invention.
Claims (9)
1. rail mounted becomes friction-pendulum shock-insulation support, it is characterised in that: the upper sliding rail including being equipped with card slot in bar shaped, sliding block,
Lower slider track equipped with bar shaped lower bayonet slot；The top of sliding block is equipped with upper buckle and upper slide surface, and the lower part of sliding block is equipped with lower card
Button and lower slide surface, upper to be caught in card slot, lower to be caught in lower bayonet slot, the lower surface of upper sliding rail is equipped with first
Sliding surface, the upper surface of lower slider track are equipped with the second sliding surface, upper slide surface and the contact of the first sliding surface cylinder, lower slide surface
It being contacted with the second sliding surface cylinder, the longitudinal center line of upper sliding rail and the longitudinal center line of lower slider track are not parallel, the
It is covered with the different frictional layer of different zones coefficient of friction on one sliding surface, is covered with different zones coefficient of friction not on the second sliding surface
With frictional layer, be covered with wearing layer on upper slide surface and lower slide surface.
2. rail mounted described in accordance with the claim 1 becomes friction-pendulum shock-insulation support, it is characterised in that: upper sliding rail includes upper company
Fishplate bar, the upper rail being fixed on upper junction plate, two pieces of upper limit position blocks for being separately fixed at upper rail both ends；The two sides of upper rail
It is equipped with card slot, the lower surface of upper rail is arranged in the first sliding surface；
Lower slider track includes lower connecting plate, the bottom track body being fixed on lower connecting plate, and two pieces are separately fixed at bottom track body both ends
Lower position block；The two sides of bottom track body are equipped with lower bayonet slot, and the upper surface of bottom track body is arranged in the second sliding surface；
Sliding block includes gliding mass, and two upper buckles of gliding mass upper end are arranged in, is arranged under two of gliding mass lower end and buckles；Upper sliding
The upper surface of gliding mass is arranged in face, and the lower end surface of gliding mass is arranged in lower slide surface, and two upper buckles are located at slide surface
Two sides, buckle is located at the two sides of lower slide surface under two；
Two upper buckles are respectively clamped into the upper card slot of upper rail two sides, and buckle is respectively clamped into the lower card of bottom track body two sides under two
In slot, the upper slide surface of gliding mass and the contact of the first sliding surface cylinder, the lower slide surface of gliding mass and the second sliding surface cylinder are contacted.
3. rail mounted becomes friction-pendulum shock-insulation support according to claim 2, it is characterised in that: the upper slide surface of gliding mass, cunning
Lower slide surface, the first sliding surface, the second sliding surface of body are cylinder, the width phase of the width of upper slide surface and the first sliding surface
It adapts to, the width of lower slide surface and the width of the second sliding surface are adapted.
4. rail mounted described in accordance with the claim 3 becomes friction-pendulum shock-insulation support, it is characterised in that: above card slot and lower bayonet slot are arc
Shape card slot is equipped with rubber layer in upper card slot and lower bayonet slot, and the center line of upper card slot and the first sliding surface are parallel, in lower bayonet slot
Heart line and the second sliding surface are parallel.
5. rail mounted described in accordance with the claim 3 becomes friction-pendulum shock-insulation support, it is characterised in that: the center line of upper slide surface and
The center line of lower slide surface is orthogonal, and two upper orientations buckled and the orientation buckled under two are orthogonal, upper sliding rail
The longitudinal center line in road and the longitudinal center line of lower slider track are orthogonal.
6. rail mounted described in accordance with the claim 1 becomes friction-pendulum shock-insulation support, it is characterised in that: upper limit position block and lower position block
It is equipped with the flexible layer of rubber.
7. rail mounted described in accordance with the claim 1 becomes friction-pendulum shock-insulation support, it is characterised in that: the cross-sectional area of upper card slot is big
In the cross-sectional area of upper buckle, the cross-sectional area of lower bayonet slot is greater than the cross-sectional area of lower buckle.
8. rail mounted described in accordance with the claim 1 becomes friction-pendulum shock-insulation support, it is characterised in that: the frictional layer of the first sliding surface
Coefficient of friction and the coefficient of friction of frictional layer of the second sliding surface be sequentially increased from center to edge；
Alternatively, the variation tendency of the coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
Fixed value to determine by support parameter is gradually reduced；
Alternatively, the variation tendency of the coefficient of friction of the frictional layer of the coefficient of friction of the frictional layer of the first sliding surface and the second sliding surface
To be gradually reduced by the fixed value determined greater than support parameter.
9. rail mounted becomes friction-pendulum shock-insulation support according to claim 2, it is characterised in that: the edge of upper junction plate is pre-
Stay bolt hole, fixture block or card slot, edge prepared screw-bolt hole, fixture block or the card slot of lower connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180065.1A CN109853769B (en) | 2019-03-11 | 2019-03-11 | Rail type friction-variable pendulum vibration isolation support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910180065.1A CN109853769B (en) | 2019-03-11 | 2019-03-11 | Rail type friction-variable pendulum vibration isolation support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109853769A true CN109853769A (en) | 2019-06-07 |
| CN109853769B CN109853769B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910180065.1A Active CN109853769B (en) | 2019-03-11 | 2019-03-11 | Rail type friction-variable pendulum vibration isolation support |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110863423A (en) * | 2019-11-28 | 2020-03-06 | 刘海洋 | Bridge butt joint anti-seismic device |
| CN111166520A (en) * | 2020-01-17 | 2020-05-19 | 宋辉 | Automatic ultrasonic scaling device and automatic ultrasonic scaling method |
| CN111676810A (en) * | 2020-06-26 | 2020-09-18 | 丁西焘 | Bridge support capable of being partially replaced and mounting method thereof |
| CN114370069A (en) * | 2022-03-09 | 2022-04-19 | 华东交通大学 | Bidirectional sliding device for center column of underground structure and application |
| CN114427191A (en) * | 2022-03-07 | 2022-05-03 | 广州大学 | Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support |
| CN114809313A (en) * | 2022-05-18 | 2022-07-29 | 丰泽智能装备股份有限公司 | Anti-drawing guide rail type friction pendulum support |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110863423A (en) * | 2019-11-28 | 2020-03-06 | 刘海洋 | Bridge butt joint anti-seismic device |
| CN111166520A (en) * | 2020-01-17 | 2020-05-19 | 宋辉 | Automatic ultrasonic scaling device and automatic ultrasonic scaling method |
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| CN114427191A (en) * | 2022-03-07 | 2022-05-03 | 广州大学 | Arch bridge type tensile conical variable-curvature variable-friction pendulum shock insulation support |
| CN114370069A (en) * | 2022-03-09 | 2022-04-19 | 华东交通大学 | Bidirectional sliding device for center column of underground structure and application |
| CN114809313A (en) * | 2022-05-18 | 2022-07-29 | 丰泽智能装备股份有限公司 | Anti-drawing guide rail type friction pendulum support |
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| CN109853769B (en) | 2024-02-13 |
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