CN207376863U - A kind of space grid structure distribution built-in bar-type impact damper - Google Patents
A kind of space grid structure distribution built-in bar-type impact damper Download PDFInfo
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- CN207376863U CN207376863U CN201721457267.9U CN201721457267U CN207376863U CN 207376863 U CN207376863 U CN 207376863U CN 201721457267 U CN201721457267 U CN 201721457267U CN 207376863 U CN207376863 U CN 207376863U
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Abstract
The application provides a kind of space grid structure distribution built-in bar-type impact damper, belongs to architectural engineering antidetonation and wind resistance technical field.The damper includes damper cavity unit, mass block, limiting plate, connecting spring, guide rod, viscoplasticity padded coaming and advance ball.Damper cavity unit is hollow rods；Guide rod is axially fixed in damper housing unit, and connecting spring, mass block and limiting plate sequentially pass through the outer surface stickup viscoplasticity padded coaming of guide rod, mass block and limiting plate；The junction of mass block and guide rod is equipped with advance ball.For the damper of the application when main structure is vibrated, mass block and main structure generate relative motion, when mass block does not collide with limiting plate, are equal to traditional TMD, each damper is tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；When mass block and limiting plate collide, can be consumed energy by hitting.The damper can be applicable to architectural engineering antidetonation and wind resistance field.
Description
Technical field
The utility model belongs to architectural engineering vibration damping and wind resistance technical field, and in particular to a kind of space grid structure distribution
Formula built-in bar-type impact damper.
Background technology
In recent years, tuned mass damper and energy-eliminating shock-absorbing damper vibration damping control technology due to its structure type is simple,
Effectiveness in vibration suppression significantly, oscillation damping and energy dissipating clear mechanism, the advantages that external energy need not be applied, be easily achieved and obtain extensively should
With.For space grid structure since its span is big, vertical rigidity is smaller, is easy to be influenced be subject to wind or geological process, three-dimensional space
Between characteristic it is notable, and the dynamic response vibration shape is intensive.
However, tuned mass damper common at present or impact damper are placed at the top of building structure more or bottom,
Quality and volume are larger, and sphere of action is concentrated, and only control several vibration shapes before minority, effective bandwidth is relatively narrow, for greatly across sky
Between structural vibration control effect unobvious.Traditional tuned mass damper or impact damper are all by external structure as matter
Gauge block occupies main structure inner space, and may cause main structure locally dead weight difference is larger, and rod piece and joints are not
.Space grid structure rod piece inner space can be used as damper cavity structure, make full use of space, reduce damper and make
Valency.Therefore, using the form of space grid structure distribution built-in bar-type impact damper, moved by mass block absorbing structure
Can, it then collides with limiting plate and carrys out dissipation energy, so as to achieve the purpose that carry out energy-eliminating shock-absorbing, this is for Practical Project
Energy-eliminating shock-absorbing is of great significance.
Utility model content
The utility model is not suitable for solve conventional butt damper in long-span space truss structure vibration control
Problem, the purpose of this utility model is that a kind of space grid structure distribution built-in bar-type impact damper is proposed, in space
Collision system is set in the rod piece of grid structure, to transfer and dissipation energy.This damper structure is simple, easy to implement, vibration damping
Performance is good.The damper of the utility model is distributed in each rod piece of main structure, when main structure is vibrated, mass block meeting and master
Structure generates relative motion, when mass block does not collide with limiting plate, is equal to conventional tune mass damper (Tuned Mass
Damper TMD), the kinetic energy of main structure passes to mass block by spring, so as to reduce the kinetic energy of main structure in itself, each resistance
Buddhist nun's device is tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；When mass block and limiting plate collide, mass block and limit
Position plate collides with each other dissipation energy, and mass block generates nonlinear deformation in an impact with the viscoelastic material outside limiting plate, from
And increase the energy dissipation in collision.
The technical solution of the utility model：
A kind of space grid structure distribution built-in bar-type impact damper, including damper cavity unit, mass block, limit
Position plate, connecting spring, guide rod, viscoplasticity padded coaming and advance ball；The built-in bar-type impact damper is distributed in
In space grid structure；
The damper cavity unit is hollow rods；Guide rod is axially fixed in damper cavity unit, connection
Spring, mass block and limiting plate sequentially pass through guide rod, and connecting spring one end is fixed on the guide bar, the other end and mass block phase
Even, mass block is slided along guide rod, and limiting plate is fixedly connected with guide rod, and limiting plate dissipates energy consumption with mass block collision；Quality
Paste viscoplasticity padded coaming in the outer surface of block and limiting plate；The junction of mass block and guide rod is equipped with advance ball, slides
Ball is slided along guide rod, is rubbed for reducing.
The mass block and limiting plate are solid iron.
The advance ball is stainless steel, and surface scribbles lubriation material.
The viscoplasticity padded coaming is rubber, foamed plastics or knitted cotton.
The gross mass of all mass blocks is the 1%- of space grid structure overall quality in the space grid structure
3%, the quality of single mass is determined according to the number of damper in space grid structure；The rigidity k of the connecting springi
Pass through formulaIt calculates, wherein, fiFor the frequency of i-th of damper, the space net rack of control required for being
The modal frequency of structure, miFor the quality of mass block in i-th of damper.
The distance between the mass block and limiting plate are encouraged according to the quality and external load of mass block and determined, damping
The mass block of device is bigger, and spacing should be bigger, in application is installed, can be adjusted according to control effect.
The frequency f of the damperiIt is determined according to the model analysis of space grid structure, is obtained by model analysis
The vibration shape modal participating mass ratio of each vibration shape, the control vibration shape is the larger former first order modes of vibration shape modal participating mass ratio, control
The accumulated quality of the vibration shape participates in the sum of coefficient and should be greater than or equal to 90%, and the frequency of damper is the frequency of the vibration shape in order to control.
Operation principle：The damper of the utility model is distributed in each rod piece of space net rack, is vibrated in space net rack
When, mass block can generate relative motion with space net rack, when mass block does not collide with limiting plate, be equal to conventional tune quality
Damper (Tuned Mass Damper TMD), the kinetic energy of space grid structure passes to mass block by spring, so as to reduce
The kinetic energy of space grid structure in itself, each damper are tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；Work as matter
When gauge block and limiting plate collide, mass block and limiting plate collide with each other dissipation energy, mass block and the viscoplasticity outside limiting plate
Material generates nonlinear deformation in an impact, so as to increase the energy dissipation in collision.
The utility model advantageous effect：
1. application is clear and definite, intensive suitable for the vibration shape, the significant space grid structure earthquake of spatial character or charming appearance and behaviour are shaken
In dynamic control.
2. simple structure, the characteristics of making full use of the rod piece of large span spatial structure hollow, single big mass block is divided into
Several small mass blocks, are distributed according to certain rule in different rod pieces, save space and cost, made convenient for engineering,
Installation and use, it is easier to be promoted in engineering construction.
3. the big vibration shape of the modal contribution that can be directed to space grid structure carries out vibration damping, vibration damping bandwidth, effect ideal.
4. the mechanism of energy consumption is simple, when mass block does not collide with limiting plate, it is equal to conventional tune mass damper
(Tuned Mass Damper TMD), the kinetic energy of space grid structure passes to mass block by spring, so as to reduce space networks
The kinetic energy of frame structure in itself, each damper are tuned as different intrinsic frequencies, can be to different vibration shape vibration dampings；When mass block and
When limiting plate collides, mass block and limiting plate collide with each other dissipation energy, and mass block exists with the viscoelastic material outside limiting plate
Nonlinear deformation is generated in collision, so as to increase the energy dissipation in collision.
Description of the drawings
Fig. 1 is the utility model space grid structure built-in bar-type impact damper top view.
Fig. 2 is the utility model mass block along bar axial section.
Fig. 3 is the utility model mass block cross sectional view.
Fig. 4 is the utility model /V plate along bar axial section.
Fig. 5 is the utility model limiting plate cross sectional view.
Fig. 6 is arrangement example top view of the utility model in space net rack.
Fig. 7 is arrangement exemplary cross sectional figure of the utility model in space net rack.
In figure：1 damper cavity unit；2 mass blocks；3 limiting plates；4 connecting springs；5 guide rods；
6 viscoplasticity padded coamings；7 advance balls.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings.
Embodiment 1：As shown in Figure 1, collide resistance for a kind of space grid structure distribution built-in bar-type of the utility model
Buddhist nun's device mainly includes damper cavity unit 1, mass block 2, limiting plate 3, connecting spring 4, guide rod 5, viscoplasticity fender
Material 6, advance ball 7.
As shown in Figure 2,3, there is advance ball between mass block and guide rod, reduce friction between the two, advance ball
On scribble lubricant with reduce abrasion.
As shown in Figure 4,5, it is fixedly connected between limiting plate and guide rod.
As shown in Figure 6,7, this damper can be arranged in any position in space grid structure, and the overstriking line in figure is
Damper exemplary plot.Specific location in Practical Project can join according to the dynamic response of space grid structure to its vibration shape
With coefficient, by mode participation coefficient or the principal mode controlled, the vibration shape abdomen for being arranged in each principal mode of damper are needed
Point.
Damper cavity unit 1 is the rod piece of space grid structure, has a fixed guide rod 5 in cavity, has above
Connecting spring 4, mass block 2, wherein limiting plate 3, connecting spring, 4 one end are fixedly connected with guide rod 5, the other end and mass block 2
It is connected, has advance ball 7 between mass block 2 and guide rod 5, limiting plate 3 is fixedly connected with guide rod 4.The mass block and limit
Position plate is annular solid iron, and mass block, /V plate shape, length are determined by the member system feature of space grid structure,
The quality of mass block and the length of spring are related with the frequency of space grid structure, according to the dynamic response of space grid structure,
Its mode participation coefficient is obtained, the principal mode for needing to control is obtained by mode participation coefficient, so that it is determined that each damper
Each frequency, the quality of mass block and the rigidity of spring also thereby determine that.Advance ball is stainless steel, and surface scribbles profit
Sliding material.The distance between the mass block 2 and limiting plate 3 are encouraged according to the quality and external load of mass block and determined, resistance
The mass block of Buddhist nun's device is bigger, and spacing should be bigger, in application is installed, can be adjusted according to control effect.Viscoplasticity fender
Expect that (6) are to include rubber, it is any one or more in foamed plastics or knitted cotton.
Claims (10)
1. a kind of space grid structure distribution built-in bar-type impact damper, which is characterized in that including damper cavity unit
(1), mass block (2), limiting plate (3), connecting spring (4), guide rod (5), viscoplasticity padded coaming (6) and advance ball (7)；
The built-in bar-type impact damper is distributed in space grid structure；
The damper cavity unit (1) is hollow rods；Guide rod (5) is axially fixed in damper cavity unit (1),
Connecting spring (4), mass block (2) and limiting plate (3) sequentially pass through guide rod (5), and connecting spring (4) one end is fixed on guide rod
(5) on, the other end is connected with mass block (2), and mass block (2) is slided along guide rod (5), and limiting plate (3) is fixed with guide rod (5)
Connection, limiting plate (3) dissipate energy consumption with mass block (2) collision；Paste viscoplasticity in the outer surface of mass block (2) and limiting plate (3)
Padded coaming (6)；The junction of mass block (2) and guide rod (5) is equipped with advance ball (7), and advance ball (7) is along guide rod
(5) slide, rub for reducing.
2. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1, which is characterized in that
The mass block (2) and limiting plate (3) are solid iron.
3. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1 or 2, feature exist
In the advance ball (7) is stainless steel, and surface scribbles lubriation material.
4. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1 or 2, feature exist
In the viscoplasticity padded coaming (6) is rubber, foamed plastics or knitted cotton.
5. a kind of space grid structure distribution built-in bar-type impact damper according to claim 3, which is characterized in that
The viscoplasticity padded coaming (6) is rubber, foamed plastics or knitted cotton.
6. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1,2 or 5, feature
It is, the gross mass of all mass blocks (2) is the 1%- of space grid structure overall quality in the space grid structure
3%, the quality of single mass (2) is determined according to the number of damper in space grid structure；The mass block (2) and limit
The distance between position plate (3) is encouraged according to the quality and external load of mass block and determined.
7. a kind of space grid structure distribution built-in bar-type impact damper according to claim 3, which is characterized in that
The gross mass of all mass blocks (2) is the 1%-3% of space grid structure overall quality in the space grid structure, single
The quality of mass block (2) is determined according to the number of damper in space grid structure；The mass block (2) and limiting plate (3)
The distance between according to the quality and external load of mass block encourage determine.
8. a kind of space grid structure distribution built-in bar-type impact damper according to claim 4, which is characterized in that
The gross mass of all mass blocks (2) is the 1%-3% of space grid structure overall quality in the space grid structure, single
The quality of mass block (2) is determined according to the number of damper in space grid structure；The mass block (2) and limiting plate (3)
The distance between according to the quality and external load of mass block encourage determine.
9. a kind of space grid structure distribution built-in bar-type impact damper according to claim 1,2,5,7 or 8,
It is characterized in that, the rigidity k of the connecting spring (4)iPass through formulaIt calculates, wherein, fiFor i-th of resistance
The frequency of Buddhist nun's device, the modal frequency of the space grid structure of control, m required for beingiFor mass block (2) in i-th of damper
Quality.
10. a kind of space grid structure distribution built-in bar-type impact damper according to claim 6, feature exist
In the rigidity k of the connecting spring (4)iPass through formulaIt calculates, wherein, fiFor i-th damper
Frequency, the modal frequency of the space grid structure of control, m required for beingiFor the quality of mass block (2) in i-th of damper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721457267.9U CN207376863U (en) | 2017-11-06 | 2017-11-06 | A kind of space grid structure distribution built-in bar-type impact damper |
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| CN201721457267.9U CN207376863U (en) | 2017-11-06 | 2017-11-06 | A kind of space grid structure distribution built-in bar-type impact damper |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989217A (en) * | 2017-11-06 | 2018-05-04 | 大连理工大学 | A kind of space grid structure distribution built-in bar-type impact damper |
| CN109737931A (en) * | 2019-01-09 | 2019-05-10 | 皖西学院 | A kind of shockproof plotting board of high-precision |
| CN112555338A (en) * | 2020-12-16 | 2021-03-26 | 东莞市埃弗米数控设备科技有限公司 | Damping dynamic vibration absorber |
-
2017
- 2017-11-06 CN CN201721457267.9U patent/CN207376863U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107989217A (en) * | 2017-11-06 | 2018-05-04 | 大连理工大学 | A kind of space grid structure distribution built-in bar-type impact damper |
| CN107989217B (en) * | 2017-11-06 | 2023-11-17 | 大连理工大学 | Spatial grid structure distributed built-in rod type collision damper |
| CN109737931A (en) * | 2019-01-09 | 2019-05-10 | 皖西学院 | A kind of shockproof plotting board of high-precision |
| CN112555338A (en) * | 2020-12-16 | 2021-03-26 | 东莞市埃弗米数控设备科技有限公司 | Damping dynamic vibration absorber |
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