CN203834343U - Novel foamed metal viscous damper for bridge shock absorption - Google Patents
Novel foamed metal viscous damper for bridge shock absorption Download PDFInfo
- Publication number
- CN203834343U CN203834343U CN201420152424.5U CN201420152424U CN203834343U CN 203834343 U CN203834343 U CN 203834343U CN 201420152424 U CN201420152424 U CN 201420152424U CN 203834343 U CN203834343 U CN 203834343U
- Authority
- CN
- China
- Prior art keywords
- sleeve
- outer sleeve
- foam metal
- foamed metal
- inner sleeve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002184 metal Substances 0.000 title claims abstract description 34
- 238000010521 absorption reaction Methods 0.000 title abstract 2
- 230000035939 shock Effects 0.000 title abstract 2
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 230000003068 static Effects 0.000 claims abstract description 8
- 239000006260 foam Substances 0.000 claims description 28
- 238000007789 sealing Methods 0.000 claims description 12
- 239000007788 liquid Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003534 oscillatory Effects 0.000 description 1
- 238000002910 structure generation Methods 0.000 description 1
Abstract
The utility model belongs to the field of bridge vibration control and particularly relates to a novel foamed metal viscous damper for bridge shock absorption. The foamed metal viscous damper consists of a left fixing shaft, an inner sleeve, viscous fluid, an outer sleeve seal cover, a static seal ring, a built-in piston, a movable seal ring, foamed metal, a corrugated steel sleeve, an outer sleeve and a right fixing shaft. The viscous fluid can be driven by the foamed metal with a high porosity to pass without a movement piston and an oil hole of a traditional oil damper, severe pressure variation cannot be produced, and the vacuum or jamming problem of a common oil damper is solved. During the small-amplitude vibration, sufficient damping force can be produced by the flow of the viscous fluid. When large-amplitude vibration exceeds a preset stroke, the high damping properties of the foamed metal are simultaneously utilized to jointly consume energy. The novel foamed metal viscous damper can be applied in the vibration control problem of a bridge stray cable and the like.
Description
Technical field
The utility model belongs to the controlling of vibration field, is specifically related to a kind of novel foam metal viscous damper.
Background technology
Structural vibration control is applied allusion or modern control theory exactly, by some control device being structurally set, reaching the mechanical property of improving structure, reduces or suppress the object of nuisance vibration.When structure is subject to wind load, geological process equal excitation, these control device will, to one group of passive or control initiatively of structure generation, make the reaction of structure be able to significant reduction.Whether structural vibration control needs outside energy according to it, generally can be divided into Passive Control, half ACTIVE CONTROL and ACTIVE CONTROL.
What the controlling of vibration employing was at present more is Passive Control, i.e. additional passive type damper.Wherein, the engineering of oil damper is most widely used, technology maturation.But currently used conventional oil damper adopts single rod pattern conventionally, but this fluid damper is in the textural defect that exists, when piston movement, because oil cylinder and resisting medium (fluid) are in theory all volume invariability material (or limited compressible), this defect usually can cause the sharply variation of oil cylinder internal pressure: when guide rod is extracted out, this part guide rod being drawn out of occupied volume in oil cylinder cannot be compensated, in oil cylinder, can produce " vacuum " phenomenon, make guide rod can not continue motion; Contrary when guide rod bounces back, because former part guide rod outside oil cylinder enters in oil cylinder, and the volume of oil cylinder does not increase, thereby causes " dieback " phenomenon.The damping force that this single rod damper produces is very unstable, in " vacuum " or " dieback " stage, is similar to rigid rod, and its damping property is difficult to guarantee.
Therefore,, for the variety of issue existing in existing oil damper, design a kind of On A Retrofitted Damper rational in infrastructure.
Summary of the invention
The utility model proposes a kind of rational in infrastructure, novel foam metal viscous damper for the bridge vibration damping that can provide different damping power for various amplitude.
Novel foam metal viscous damper for the bridge vibration damping the utility model proposes, by inner sleeve 2, outer sleeve seal cover 4, static sealing ring 5, built-in piston 6, dynamic seal ring 7, foam metal 8, corrugated steel sleeve pipe 9 and outer sleeve 10 form, wherein: the equal one end sealing of inner sleeve 2 and outer sleeve 10, other end opening, insert in outer sleeve 10 openends inner sleeve 2 opening one end, and can in outer sleeve 10, move around, the afterbody of inner sleeve openend is provided with corrugated steel sleeve 9, built-in piston 6 inserts in inner sleeve 2, and the boom end of built-in piston 6 is fixed on outer sleeve 10 blind ends, between corrugated steel sleeve pipe 9 and built-in piston 6, be provided with foam metal 8, outer sleeve 10 openends are provided with outer sleeve seal cover 4 and static sealing ring 5, inner sleeve 2 is provided with dynamic seal ring 7 with corrugated steel sleeve pipe 9 junctions.
In the utility model, the space that inner sleeve 3, dynamic seal ring 7 and outer sleeve 10 form is full of viscous liquid 3, and described viscous liquid 3 flows between inner sleeve 2 and outer sleeve 10 by the hole of foam metal 8.
In the utility model, outer sleeve 10 sealing one end are provided with right fixed shaft 11, and inner sleeve 2 sealing one end are provided with left fixed shaft 1.
In the utility model, during little amplitude motion, foam metal 8 is indeformable or distortion is very little, thereby and compressive strain dissipation energy occurs for it during large amplitude.
The beneficial effects of the utility model are: the utility model can be without moving piston and the oil-through hole of traditional oils damper, foam metal by high porosity passes through viscous liquid, the pressure that can not produce sharply changes, and has solved " vacuum " or " dieback " phenomenon of conventional oil damper.During small amplitude motion, flowing of viscous liquid can produce enough damping forces; Large-amplitude vibration surpasses predetermined stroke, will utilize the high damping characteristic of foam metal jointly to consume energy simultaneously, can be applied to the vibration isolation problem of bridge stay cable etc.
Accompanying drawing explanation
Fig. 1 is structural diagrams of the present utility model.
Number in the figure: 1 is left fixed shaft, 2 is inner sleeve, and 3 is viscous liquid, and 4 is outer sleeve seal cover, and 5 is static sealing ring, and 6 is built-in piston, and 7 is dynamic seal ring, and 8 is foam metal, and 9 is corrugated steel sleeve pipe, and 10 is outer sleeve, and 11 is right fixed shaft.
The specific embodiment
Below by embodiment, further illustrate by reference to the accompanying drawings the utility model.
Novel foam metal viscous damper for bridge vibration damping, is comprised of left fixed shaft 1, inner sleeve 2, viscous liquid 3, outer sleeve seal cover 4, static sealing ring 5, built-in piston 6, dynamic seal ring 7, foam metal 8, corrugated steel sleeve pipe 9, outer sleeve 10, right fixed shaft 11.Built-in piston 6 does not move, and inner sleeve 2 can freely-movable, and inner sleeve 2 ends stretch out one section of corrugated steel sleeve, connect foam metal material 8, and viscous liquid 3 flows between inner sleeve 2 and outer sleeve 10 by the hole of foam metal 8.Outer sleeve has external seal lid 4, static sealing ring 5 to seal, and is connected with dynamic seal ring 7 on inner sleeve 2.The pressure that can not occur between piston 6 and foam metal 8 sharply changes.When inner sleeve 2 motion, by piston 6 and foam metal 8 is fuel-displaced or oil-feed to change the volume of viscous liquid 3 parts substantially constant, thereby its pressure can sharply not changed, avoided said " vacuum " or " dieback " phenomenon above, assurance damper can normally be worked.During little amplitude motion, foam metal 8 is indeformable or distortion is very little, thereby and compressive strain dissipation energy occurs for it during large amplitude.
The course of work of the present utility model: take cable-stayed bridge cable vibration damping as example, left fixed shaft 1 and right fixed shaft 11 are separately fixed on bridge floor support and drag-line parrel, when drag-line occurs to vibrate by a small margin, inner sleeve 2 motions, thus viscous liquid 3 is by hole mobile damping force dissipation energy that produces between inner sleeve 2 and outer sleeve 10 of foam metal 8; When drag-line generation violent oscillatory motion, surpass certain one stroke, thereby can producing compressive strains, the high damping material foam metal 8 that inner sleeve 2 right-hand members connect increases damping forces, thus vibration damping more effectively.
Claims (4)
1. novel foam metal viscous damper for a bridge vibration damping, by inner sleeve (2), outer sleeve seal cover (4), static sealing ring (5), built-in piston (6), dynamic seal ring (7), foam metal (8), corrugated steel sleeve pipe (9) and outer sleeve (10) form, wherein: all one end sealings of inner sleeve (2) and outer sleeve (10), other end opening, insert in outer sleeve (10) openend inner sleeve (2) opening one end, and can in outer sleeve (10), move around, the afterbody of inner sleeve openend is provided with corrugated steel sleeve (9), built-in piston (6) inserts in inner sleeve (2), and the boom end of built-in piston (6) is fixed on outer sleeve (10) blind end, between corrugated steel sleeve pipe (9) and built-in piston (6), be provided with foam metal (8), outer sleeve (10) openend is provided with outer sleeve seal cover (4) and static sealing ring (5), inner sleeve (2) is provided with dynamic seal ring (7) with corrugated steel sleeve pipe (9) junction.
2. novel foam metal viscous damper for bridge vibration damping according to claim 1, it is characterized in that the space that inner sleeve (3), dynamic seal ring (7) and outer sleeve (10) form is full of viscous liquid (3), described viscous liquid (3) flows between inner sleeve (2) and outer sleeve (10) by the hole of foam metal (8).
3. novel foam metal viscous damper for bridge vibration damping according to claim 1, is characterized in that outer sleeve (10) sealing one end is provided with right fixed shaft (11), and inner sleeve (2) sealing one end is provided with left fixed shaft (1).
4. novel foam metal viscous damper for bridge vibration damping according to claim 1, foam metal while it is characterized in that little amplitude motion (8) is indeformable or distortion is very little, thus and there is compressive strain dissipation energy in it during large amplitude.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152424.5U CN203834343U (en) | 2014-04-01 | 2014-04-01 | Novel foamed metal viscous damper for bridge shock absorption |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420152424.5U CN203834343U (en) | 2014-04-01 | 2014-04-01 | Novel foamed metal viscous damper for bridge shock absorption |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203834343U true CN203834343U (en) | 2014-09-17 |
Family
ID=51512203
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420152424.5U Active CN203834343U (en) | 2014-04-01 | 2014-04-01 | Novel foamed metal viscous damper for bridge shock absorption |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203834343U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500637A (en) * | 2014-11-26 | 2015-04-08 | 长春轨道客车股份有限公司 | Leak-free hydraulic shock absorber |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
-
2014
- 2014-04-01 CN CN201420152424.5U patent/CN203834343U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104500637A (en) * | 2014-11-26 | 2015-04-08 | 长春轨道客车股份有限公司 | Leak-free hydraulic shock absorber |
| CN111877159A (en) * | 2020-09-17 | 2020-11-03 | 何静 | Bridge stay cable damping mechanism |
| CN111877159B (en) * | 2020-09-17 | 2021-12-31 | 苏于水 | Bridge stay cable damping mechanism |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201818696U (en) | Single piston rod viscous damper capable of setting initial stiffness | |
| CN101782125A (en) | Advanced triple piston damper | |
| CN103671677A (en) | Viscous damper | |
| CN103671676A (en) | Viscous damper | |
| CN203834343U (en) | Novel foamed metal viscous damper for bridge shock absorption | |
| CN103615494A (en) | Damper used for vibration reduction of pipeline | |
| CN104989764A (en) | Hole type viscous damper with hole length capable of being automatically adjusted | |
| CN205136944U (en) | Cut tackify damping siphuncle way attenuator | |
| CN203656013U (en) | Viscous damper | |
| CN204533031U (en) | A kind of oil hydraulic cylinder | |
| CN204512282U (en) | A kind of two rod hydraulic damper | |
| CN203009440U (en) | Single-action two-stage hydraulic cylinder and engineering machine | |
| CN104074836A (en) | High speed hydraulic cylinder buffer mechanism | |
| CN203604531U (en) | Adjustable viscous damper | |
| CN104674968A (en) | Annular integral porous energy consumption tuned mass damper | |
| CN107327537A (en) | A kind of surge tank shock absorber | |
| CN204419758U (en) | A kind of buffering hydraulic cylinder | |
| CN204344567U (en) | A kind of without sealing servo-cylinder | |
| CN102996570B (en) | Single-action double-graded hydraulic cylinder and engineering machine | |
| CN204099477U (en) | For the damping device of the upper and lower roll vibration damping of milling train | |
| CN203656014U (en) | Viscous damper | |
| CN204300013U (en) | A kind of hydraulic jack | |
| CN204004139U (en) | The vibration damper with double-piston | |
| CN103644239A (en) | Adjustable viscous damper | |
| CN105179572A (en) | Double-rod multistage-diffraction magneto-rheological damper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |