CN104695577A - Liquid viscoelastic damper - Google Patents
Liquid viscoelastic damper Download PDFInfo
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- CN104695577A CN104695577A CN201310649743.7A CN201310649743A CN104695577A CN 104695577 A CN104695577 A CN 104695577A CN 201310649743 A CN201310649743 A CN 201310649743A CN 104695577 A CN104695577 A CN 104695577A
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- damping
- viscoelastic damper
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Abstract
The invention discloses a liquid viscoelastic damper. The liquid viscoelastic damper comprises a damping mechanism consisting of a piston, a piston rod, an end cover, a cylinder and a liquid damping medium, wherein the damping mechanism is connected with an elastic mechanism capable of providing rigid support to the movement of the piston rod; and a connecting mechanism connected with an external building structure is arranged on the elastic mechanism. The liquid viscoelastic damper provides the rigidity support through the elastic force generated by compressing and stretching the elastic mechanism to prevent repeated vibration under the condition of low load, adds a limiting function to restrain excessive displacement under static load, and has an automatic reset function. Secondly, the damping mechanism and the elastic mechanism are in a parallel relationship, and are independent from each other, so that the structure damping calculation can be performed through direct addition, and the use is convenient. The liquid viscoelastic damper retains the damping energy consumption function, overcomes multiple defects of a solid viscoelastic damper, is suitable for being promoted in such engineering as large-span bridges and high-rise buildings, and in particular, is suitable for building engineering with severer external environmental condition.
Description
Technical field
the present invention relates to a kind of Structural Energy Dissipation vibration absorber, specifically a kind of liquid viscoelastic damper, belongs to structural shielding technical field.
Background technology
Along with rapid development of economy, various large bridge building emerges in an endless stream.Wherein, viscous damper is widely accepted with the damping performance of its excellence.Viscous damper is generally made up of piston, piston rod, cylinder body, end cap, resisting medium, sealing system etc., resisting medium is viscosity liquid, its Energy Dissipation Mechanism is: when building produces vibration, the viscous damper be connected with it moves thereupon, the piston of motion forces the resisting medium of cylinder interior quickly through the runner preset, in this process the portion of energy of input is converted into thermal energy consumption to dissipate, thus reaches the object reducing structural vibration.It can thus be appreciated that viscous damper is only relevant to the movement velocity of structure to the dynamic response of bridge, have nothing to do with the displacement of bridge.Viscous damper can play damping energy dissipation effect when bridge meets with high wind and macroseism, but cannot suppress bridge, when the displacement of the static load such as car brakeing, variations in temperature, excess displacement occurs.In order to overcome the above problems, have developed solid viscoelastic damper, not only can provide additional damping, also there is certain rigidity.But, solid viscoelastic damper is the device of a kind of metal sheet and rubber (or other has the solid material of viscid characteristic) laminated construction, also exist exert oneself little, energy dissipation capacity is limited, durability and poor stability and be limited to the shortcomings such as environment temperature and load frequency, cause its applicability poor.
Summary of the invention
The technical problem that the present invention solves is: provide one both to have damping energy dissipation effect, can provide the liquid viscoelastic damper of rigid support, to overcome the deficiencies in the prior art simultaneously.It has exert oneself comparatively large, energy dissipation capacity is comparatively strong, the good advantage of durability, stability and applicability.
The present invention is formed like this: it comprises the damping mechanism be made up of piston 1, piston rod 2, end cap 3, cylinder body 4, fluid damping medium 5, damping mechanism is connected with and can be the elastic mechanism that piston rod 2 motion provides rigid support, elastic mechanism is provided with the bindiny mechanism with exterior building anatomical connectivity.
In above-mentioned liquid viscoelastic damper, described elastic mechanism is made up of the flexible member 6 be socketed on piston rod 2 two ends, and described bindiny mechanism is made up of the collar 7 be connected on cylinder body 4, the bearing pin 8 be connected on the collar 7, the fixed block 9 be located at outside piston rod 2 two ends; One end of flexible member 6 is connected with end cap 3, and the other end of flexible member 6 is connected with fixed block 9, and bearing pin 8 is connected with the upper and lower part of exterior building structure respectively with fixed block 9.
In aforesaid liquid viscoelastic damper, described elastic mechanism is made up of two flexible members 6, the elastic piston 10 that is connected to piston rod 2 one end, and described bindiny mechanism is by the earrings 11 be connected with piston rod 2 the other end, is placed in outside elastic mechanism and internal diameter is greater than the urceolus 12 of cylinder body 4, the connecting lug 13 be connected on urceolus 12 is formed; Piston rod 2 between end cap 3 and elastic piston 10 is socketed a flexible member 6, and between elastic piston 10 and connecting lug 13, connect another flexible member 6, earrings 11 is connected with the upper and lower part of exterior building structure respectively with connecting lug 13.
In aforesaid liquid viscoelastic damper, described flexible member 6 is cylindroid helical-coil compression spring or disk spring.
Owing to have employed technique scheme, compared with prior art, the present invention installs and can be the elastic mechanism that piston rod movement provides rigid support on damping mechanism, simultaneously the Aided design bindiny mechanism of docking with exterior building structure.On the one hand by the compression of elastic mechanism with stretch and produce elastic force and provide rigid support, occur under avoiding side crops industry situation repeatedly to vibrate; Add limit function on the other hand, excess displacement occurs under inhibit static load; But also there is auto-reset function.Secondly, damping mechanism and elastic mechanism are parallel relationship, separate, when carrying out structural damping and calculating, can direct addition calculation, and easy to use.The present invention not only remains damping energy dissipation function, overcomes the shortcomings of solid viscoelastic damper simultaneously, is adapted at promoting in the engineering such as Longspan Bridge, highrise building, is particularly applicable to the construction work that external environmental condition is more severe.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of concrete structure of the present invention;
Fig. 2 is the schematic diagram of the another kind of concrete structure of the present invention;
Being labeled as of accompanying drawing: 1-piston, 2-piston rod, 3-end cap, 4-cylinder body, 5-fluid damping medium, 6-flexible member, the 7-collar, 8-bearing pin, 9-fixed block, 10-elastic piston, 11-earrings, 12-urceolus, 13-connecting lug.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further illustrated.
Embodiments of the invention 1: as shown in Figure 1, this liquid viscoelastic damper comprises the damping mechanism be made up of existing commercially available piston 1, piston rod 2, end cap 3, cylinder body 4, fluid damping medium 5 to the structural representation of a kind of liquid viscoelastic damper of the present invention.Flexible member 6 can be socketed on piston rod 2 two ends and form elastic mechanism, for piston rod 2 motion provides rigid support.Wherein, flexible member 6 can adopt cylindroid helical-coil compression spring, disk spring, or is used by all kinds of existing commercially available spring assembly.Can the collar 7 be connected on cylinder body 4, bearing pin 8 is connected on the collar 7, then two pieces of fixed blocks 9 are arranged on outside piston rod 2 two ends respectively form bindiny mechanism.One end of flexible member 6 is connected with end cap 3, the other end of flexible member 6 is connected with fixed block 9, and bearing pin 8 is connected with the upper and lower part of exterior building structure respectively with fixed block 9, above-mentioned connected mode can adopt welding, be threaded or hinged.
When there is relative displacement in the upper and lower part of building structure, the piston rod 2 be connected with fixed block 9 and the cylinder body 4 be connected with bearing pin 8 produce relative motion thereupon.Under the drive of piston rod 2, piston 1 moves back and forth in cylinder body, forces fluid damping medium 5 quickly through the default runner on piston 1, utilizes the characteristic of fluid damping medium 5 to produce damping force; Meanwhile, flexible member 6 produces elastic force along with fixed block 9 and the change of the spacing of end cap 3, for piston rod 2 motion provides initial rigid support, realizes function of the present invention.
Embodiments of the invention 2: as shown in Figure 2, this liquid viscoelastic damper comprises the damping mechanism be made up of existing commercially available piston 1, piston rod 2, end cap 3, cylinder body 4, fluid damping medium 5 to the structural representation of another kind of liquid viscoelastic damper of the present invention.Two flexible members 6 can be installed, and elastic piston 10 be connected to piston rod 2 one end formation elastic mechanism, for piston rod 2 motion provides rigid support.Wherein, flexible member 6 can adopt cylindroid helical-coil compression spring, disk spring, or is used by all kinds of existing commercially available spring assembly.Earrings 11 is connected with piston rod 2 the other end, urceolus 12 is placed in outside elastic mechanism and its internal diameter is made into the size being greater than cylinder body 4, connecting lug 13 being connected on urceolus 12 and forming bindiny mechanism.Piston rod 2 between end cap 3 and elastic piston 10 is socketed a flexible member 6, another flexible member 6 is installed between elastic piston 10 and connecting lug 13, earrings 11 is connected with the upper and lower part of exterior building structure respectively with connecting lug 13, above-mentioned connected mode can adopt welding, be threaded or hinged.
When there is relative displacement in the upper and lower part of building structure, piston rod 2 drives piston 1 and elastic piston 10 to move in cylinder body 4 and urceolus 12 respectively.Piston 1 moves and produces damping force, and flexible member 6 is compressed by elastic piston 10 and stretches and produces elastic force, realizes function of the present invention.
Embodiments of the present invention are not limited to above-described embodiment, and the various changes made under the prerequisite not departing from invention aim all belong to the protection domain of invention.
Claims (2)
1. a liquid viscoelastic damper, it is characterized in that: comprise the damping mechanism be made up of piston (1), piston rod (2), end cap (3), cylinder body (4), fluid damping medium (5), damping mechanism is connected with and can be the elastic mechanism that piston rod (2) motion provides rigid support, elastic mechanism is provided with the bindiny mechanism with exterior building anatomical connectivity.
2. liquid viscoelastic damper according to claim 1, it is characterized in that: described elastic mechanism is made up of the flexible member (6) be socketed on piston rod (2) two ends, described bindiny mechanism is made up of the collar (7) be connected on cylinder body (4), the bearing pin (8) be connected on the collar (7), the fixed block (9) be located at outside piston rod (2) two ends; One end of flexible member (6) is connected with end cap (3), and its other end is connected with fixed block (9), and bearing pin (8) is connected with the upper and lower part of exterior building structure respectively with fixed block (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649743.7A CN104695577A (en) | 2013-12-06 | 2013-12-06 | Liquid viscoelastic damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310649743.7A CN104695577A (en) | 2013-12-06 | 2013-12-06 | Liquid viscoelastic damper |
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| CN104695577A true CN104695577A (en) | 2015-06-10 |
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| CN201310649743.7A Pending CN104695577A (en) | 2013-12-06 | 2013-12-06 | Liquid viscoelastic damper |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105464147A (en) * | 2016-01-15 | 2016-04-06 | 中国地震局地壳应力研究所 | Hydraulic energy-consuming isolation layer limiting device |
| CN105780640A (en) * | 2015-12-04 | 2016-07-20 | 东南大学 | Resettable shape memory alloy (SMA) multidimensional vibration isolating support |
| CN110065154A (en) * | 2019-05-31 | 2019-07-30 | 江苏蓝圈新材料股份有限公司 | A kind of prefabricated superimposed sheet hydro-thermal maintenance die station with vibrating function |
| CN110924288A (en) * | 2019-11-13 | 2020-03-27 | 株洲时代新材料科技股份有限公司 | Viscous damper |
| CN112011132A (en) * | 2020-08-06 | 2020-12-01 | 云南煤化工应用技术研究院 | Solid medium damper |
| CN112780720A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | Slidable transverse bridge compression self-resetting damper |
| CN113914498A (en) * | 2021-11-29 | 2022-01-11 | 同济大学 | Displacement limiting damping device for self-reset function |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN2143692Y (en) * | 1992-06-05 | 1993-10-13 | 刘广宁 | Oil-gas type damper |
| CN2708034Y (en) * | 2004-07-07 | 2005-07-06 | 重庆大学 | Vibration damper for vehicle suspension |
| CN201202089Y (en) * | 2008-05-28 | 2009-03-04 | 中交公路规划设计院有限公司 | Position limiter for liquid viscous damper for bridge |
| CN201386754Y (en) * | 2009-03-25 | 2010-01-20 | 中国电力科学研究院 | Vibration damping device |
| CN202176028U (en) * | 2011-07-04 | 2012-03-28 | 株洲时代新材料科技股份有限公司 | Axially limited damper |
| CN102774247A (en) * | 2011-05-12 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Wheel mass damper assembly |
| CN203603296U (en) * | 2013-12-06 | 2014-05-21 | 贵州省交通规划勘察设计研究院股份有限公司 | Liquid viscoelastic damper |
-
2013
- 2013-12-06 CN CN201310649743.7A patent/CN104695577A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2143692Y (en) * | 1992-06-05 | 1993-10-13 | 刘广宁 | Oil-gas type damper |
| CN2708034Y (en) * | 2004-07-07 | 2005-07-06 | 重庆大学 | Vibration damper for vehicle suspension |
| CN201202089Y (en) * | 2008-05-28 | 2009-03-04 | 中交公路规划设计院有限公司 | Position limiter for liquid viscous damper for bridge |
| CN201386754Y (en) * | 2009-03-25 | 2010-01-20 | 中国电力科学研究院 | Vibration damping device |
| CN102774247A (en) * | 2011-05-12 | 2012-11-14 | 通用汽车环球科技运作有限责任公司 | Wheel mass damper assembly |
| CN202176028U (en) * | 2011-07-04 | 2012-03-28 | 株洲时代新材料科技股份有限公司 | Axially limited damper |
| CN203603296U (en) * | 2013-12-06 | 2014-05-21 | 贵州省交通规划勘察设计研究院股份有限公司 | Liquid viscoelastic damper |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105780640A (en) * | 2015-12-04 | 2016-07-20 | 东南大学 | Resettable shape memory alloy (SMA) multidimensional vibration isolating support |
| CN105464147A (en) * | 2016-01-15 | 2016-04-06 | 中国地震局地壳应力研究所 | Hydraulic energy-consuming isolation layer limiting device |
| CN110065154A (en) * | 2019-05-31 | 2019-07-30 | 江苏蓝圈新材料股份有限公司 | A kind of prefabricated superimposed sheet hydro-thermal maintenance die station with vibrating function |
| CN110924288A (en) * | 2019-11-13 | 2020-03-27 | 株洲时代新材料科技股份有限公司 | Viscous damper |
| CN112011132A (en) * | 2020-08-06 | 2020-12-01 | 云南煤化工应用技术研究院 | Solid medium damper |
| CN112780720A (en) * | 2021-01-28 | 2021-05-11 | 武汉海润工程设备有限公司 | Slidable transverse bridge compression self-resetting damper |
| CN112780720B (en) * | 2021-01-28 | 2024-06-14 | 中船双瑞(洛阳)特种装备股份有限公司 | Slidable transverse bridge direction compression self-resetting damper |
| CN113914498A (en) * | 2021-11-29 | 2022-01-11 | 同济大学 | Displacement limiting damping device for self-reset function |
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Application publication date: 20150610 |