CN104314191B - Chain type particles-impact damper - Google Patents
Chain type particles-impact damper Download PDFInfo
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- CN104314191B CN104314191B CN201410528570.8A CN201410528570A CN104314191B CN 104314191 B CN104314191 B CN 104314191B CN 201410528570 A CN201410528570 A CN 201410528570A CN 104314191 B CN104314191 B CN 104314191B
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- particle swarm
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- damper cavity
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Abstract
The present invention relates to a kind of chain type particles-impact damper, including damper cavity unit, particle swarm, rope and padded coaming.Damper cavity unit is cuboid or cylindrical structure, can be single, can also be in level or/and vertically set up multiple subregion, single inside cavity one layer of particle swarm of suspention, particle swarm is made up of the two kinds of circular granulars varied in size, each circular granular makes its centering arrange by the middle form pressing from both sides a small circular granule of two big circular granulars that rope is hinged and adjacent with the corresponding built-in fitting in damper cavity unit top, and cavity inner wall and bottom are pasted with padded coaming.At wind or/and earthquake etc. effect under, shifted and the kinetic energy of dissipative structure by the friction of particle swarm, collision, the chain type arrangement that big circular granular is alternate with small circular granule can improve intergranular collision efficiency, thus increases dissipation, and the introducing of padded coaming further increases antivibrator.
Description
Technical field
The present invention relates to a kind of chain type particles-impact damper, the particle swarm being made up of and being spaced centering arrangement the two kinds of granules varied in size is suspended in midair inside one or more damper cavity unit, consumed energy by the multiple impacts of size particles, belong to civil structure (including skyscraper, tall and slender structure and bridge structure etc.) vibration control field.
Background technology
In recent years, the passive control technology such as base isolation, energy-dissipating and shock-absorbing and tuned mass damping control is used widely owing to its concept is simple, clear mechanism, cost are relatively low, in damping effect significantly and at home and abroad civil engineering.Wherein, momentum-exchange and the granule damper of structural energy dissipation is realized by the inelastic collision between grain structure, grains and friction, have to original system change little, reliability is high, good endurance, insensitive to variations in temperature, be readily used in the advantages such as adverse circumstances, receive the attention of vast civil engineering research worker.
But, the most common granule damper there are still certain deficiency: first, and traditional granule damper endoparticle is stacked, and so significantly limit the motor capacity of granule, and effectiveness in vibration suppression is the best；Secondly, particle swarm is made up of equivalently-sized granule, and under external excitation, collision frequency is less thus energy dissipative effect is poor；Additionally, granule damper operationally can produce bigger noise, and the generation of noise is closely related with the quantity of granule and quality.Therefore, improved on the basis of existing granule damper, two kinds of various sizes of circular granulars are used to make spaced arrangement and realize centre of sphere centering collision, form chain type particles-impact damper, can be effectively improved energy dissipation capacity and reduce noise, this is significant for the shockproof control of Practical Project.
Summary of the invention
In order to solve conventional particles antivibrator, owing to particle size is consistent, collision frequency is less, granule stacks the problem that the energy dissipation capacity caused is limited, the bigger noise produced when simultaneously reducing impact damper work, it is an object of the invention to propose a kind of chain type particles-impact damper, this device is improved on the basis of playing conventional particles antivibrator advantage, inside one or more damper cavity, i.e. suspend the particle swarm being made up of and being spaced centering arrangement the two kinds of circular granulars varied in size, additional cushion material simultaneously in midair.This damper structure is simple, energy-dissipating and shock-absorbing is effective.At wind or/and earthquake etc. effect under, owing in this antivibrator, the size of adjacent particle is different, therefore the particle swarm in one or more cavitys can be shifted and dissipative structure energy by the repeatedly friction between granule and granule, granule and damper cavity, collision, and padded coaming too increases energy dissipation capacity.
To achieve these goals, the present invention adopts the following technical scheme that.
A kind of chain type particles-impact damper of the present invention, including: damper cavity unit 1, particle swarm 2, rope 3 and padded coaming 4, damper cavity unit 1 is one or more, each damper cavity unit 1 is cuboid or cylindrical structure, in each damper cavity unit 1, one layer of particle swarm 2 of suspention, damper cavity unit 1 inwall and bottom are coated with padded coaming 4；Particle swarm 2 is made up of the two kinds of circular granulars varied in size, and each circular granular makes its centering arrange by the middle form pressing from both sides a small circular granule of two big circular granulars that rope 3 is hinged and adjacent with the corresponding built-in fitting in damper cavity unit 1 top；Multiple damper cavity unit 1 are horizontal or vertical setting；At wind or/and earthquake etc. effect under, shifted and the kinetic energy of dissipative structure by the friction of particle swarm, collision, the alternate chain type arrangement of size particles can improve intergranular collision efficiency, thus increases dissipation, and the introducing of padded coaming further increases the energy dissipation capacity of antivibrator.
In the present invention, described particle swarm 2 is made up of two kinds of various sizes of three or five circular granulars, and described circular granular is any one or more in steel ball, concrete ball, glass bead or Ceramic Balls；The a diameter of 2mm-50mm of circular granular, small circular granule and big circular granular mass ratio is for 0.05-0.2.
In the present invention, described particle swarm 2 is at the 30%-50% that horizontal plane projected area is damper cavity unit 1 horizontal area, and the volume of particle swarm 2 is the 5%-20% of damper cavity unit 1 volume.
In the present invention, described padded coaming 4 includes any one or more in rubber, foam plastics or knitted cotton, to increase the energy that collision is dissipated.
Compared with prior art, advantages of the present invention is as follows:
1) test shows, compared with the conventional particles antivibrator being made up of the circular granular of consistent size, two kinds of various sizes of circular granulars are used to be spaced the form making its centre of sphere centering collide, can faster reach steady statue under external excitation, and peak displacement and peak accelerator reduce about 17% 33%.
2) in the present invention, particle swarm is replaced the bulky grain in conventional particles antivibrator by the little granule of part, alleviates the quality of particle swarm, effectively reduces noise level during collision.
3) damper cavity unit structural form of the present invention is simple, can arrange different compound modes according to the feature of basic structure, make damper arrangement position the most flexible, it is adaptable to the geological process of different directions, to reach preferable damping effect.
Accompanying drawing explanation
Fig. 1 is chain type particles-impact damper front elevation view of the present invention；
Fig. 2 is chain type particles-impact damper side elevational view of the present invention；
Fig. 3 is chain type particles-impact damper top view of the present invention.
Label in figure: 1 is damper cavity unit, 2 is particle swarm, and 3 is rope, and 4 is padded coaming.
Detailed description of the invention
Describe the detailed description of the invention of the present invention below in conjunction with the accompanying drawings in detail.
Embodiment 1: as it is shown in figure 1, be a kind of chain type particles-impact damper embodiment of the present invention, it mainly includes damper cavity unit 1, the particle swarm 2, rope 3 and the padded coaming 4 that suspend in midair in cavity.
Damper cavity unit 1 is the cuboid of the Plate Welding thick by 5mm-10mm or tubular cavity, fixes with structure by the way of certain.Each granule of composition particle swarm 2 makes its centering arrange by the middle form pressing from both sides a small circular granule of two big circular granulars that rope 3 is hinged and adjacent with the corresponding built-in fitting in damper cavity unit 1 top.The length of rope 3 should be tried to achieve according to correlation theory according to the frequency of structure.The a diameter of 2mm-50mm of circular granular of composition particle swarm 2, big circular granular and small circular granular mass ratio is for 0.05-0.2, particle swarm 2 is at the 30%-50% that horizontal plane projected area is damper cavity unit 1 horizontal area, and the volume of particle swarm 2 is the 5%-20% of damper cavity unit 1 volume.Padded coaming 4(such as 5mm thick rubber, foam plastics or knitted cotton is sticked) on damper cavity unit 1 inwall and bottom.
Claims (3)
1. a chain type particles-impact damper, including damper cavity unit (1), particle swarm (2), rope (3) and padded coaming (4), it is characterized in that: damper cavity unit (1) is one or more, each damper cavity unit (1) is cuboid or cylindrical structure, in each damper cavity unit (1), one layer of particle swarm (2) of suspention, damper cavity unit (1) inwall and bottom are coated with padded coaming (4)；Particle swarm (2) is made up of the two kinds of circular granulars varied in size, each circular granular makes its centering arrange by the middle form pressing from both sides a small circular granule of two big circular granulars that rope (3) is hinged and adjacent with the corresponding built-in fitting in damper cavity unit (1) top；Multiple damper cavity unit (1) are horizontal or vertical setting；At wind or/and under geological process, shifted and the kinetic energy of dissipative structure by the friction of particle swarm, collision, the chain type arrangement that big circular granular is alternate with small circular granule improves intergranular collision efficiency, increases and dissipates.
Chain type particles-impact damper the most according to claim 1, it is characterized in that: particle swarm (2) is made up of two kinds of various sizes of three or five circular granulars, and described circular granular is any one or more in steel ball, concrete ball, glass bead or Ceramic Balls；The a diameter of 2mm-50mm of circular granular, small circular granule and big circular granular mass ratio is for 0.05-0.2；Particle swarm (2) is at the 30%-50% that horizontal plane projected area is damper cavity unit (1) horizontal area, and the volume of particle swarm (2) is the 5%-20% of damper cavity unit (1) volume.
Chain type particles-impact damper the most according to claim 1, it is characterised in that: described padded coaming (4) includes any one or more in rubber, foam plastics or knitted cotton.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528570.8A CN104314191B (en) | 2014-10-10 | 2014-10-10 | Chain type particles-impact damper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410528570.8A CN104314191B (en) | 2014-10-10 | 2014-10-10 | Chain type particles-impact damper |
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| Publication Number | Publication Date |
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| CN104314191A CN104314191A (en) | 2015-01-28 |
| CN104314191B true CN104314191B (en) | 2016-08-31 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410528570.8A Expired - Fee Related CN104314191B (en) | 2014-10-10 | 2014-10-10 | Chain type particles-impact damper |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106437263B (en) * | 2016-10-18 | 2018-08-24 | 同济大学 | Utilize the damper of friction and impact energy consumption |
| CN107366197A (en) * | 2017-08-03 | 2017-11-21 | 华东交通大学 | A kind of piston type particle damping energy dissipation vibration reducing track plate |
| CN107366544A (en) * | 2017-08-03 | 2017-11-21 | 华东交通大学 | A kind of piston type particle damping energy dissipation vibration damping subway segment |
| CN108757817B (en) * | 2018-06-20 | 2020-02-28 | 上海理工大学 | Improved electromagnetic flutter collision damper |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011101271A1 (en) * | 2011-05-12 | 2012-11-15 | Wölfel Beratende Ingenieure GmbH & Co. | Tower vibration damper and tower with a tower vibration damper |
| CN102817423B (en) * | 2012-09-11 | 2015-02-18 | 同济大学 | Buffer-type suspension-type particle tuning quality damper |
| CN102936926B (en) * | 2012-10-29 | 2015-08-19 | 广东电网公司电力科学研究院 | A kind of multidimensional energy by collision quality pendulum damper |
| DE202013009460U1 (en) * | 2013-10-28 | 2013-11-11 | Cvt Industriebedarf Gmbh | vibration |
| CN203603294U (en) * | 2013-11-22 | 2014-05-21 | 同济大学 | Transmission type collision damper |
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Granted publication date: 20160831 Termination date: 20191010 |