CN105297937B - A kind of frictional force variable damper - Google Patents
A kind of frictional force variable damper Download PDFInfo
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- CN105297937B CN105297937B CN201510748260.1A CN201510748260A CN105297937B CN 105297937 B CN105297937 B CN 105297937B CN 201510748260 A CN201510748260 A CN 201510748260A CN 105297937 B CN105297937 B CN 105297937B
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- friction plate
- sliding panel
- frictional force
- friction
- force variable
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Abstract
The present invention relates to a kind of frictional force variable damper, include the sliding panel of upper friction plate, lower friction plate and centre, sliding panel one end is provided with some groups of small brake pads, every group of small brake pad includes upper and lower two small brake pads of sliding panel both sides, upper and lower friction plate is formed by stacking by three layers, set fluted in the middle of outermost layer, ball is placed in groove；Intermediate layer is one flat plate, is placed on the ball in outermost layer, and the superiors are divided into 5 parts along glide direction, is increased successively from centre to both sides coefficient of friction, and it is rolling friction that it is middle；The present invention can be used for wind resistance, the antidetonation of structure and equipment, when being used in combination with TMD, shock isolation system, can greatly improve shock insulation, the damping effect of system, system is started in time under small load, play a role；Ensure the over-large displacement of limitation system while damping effect under big load.
Description
Technical field
The present invention relates to a kind of damper, especially a kind of frictional force variable damper is mainly used in structure and equipment
Wind resistance, seismic resistance field, can also be used in combination improvement its control effect with earthquake isolating equipment, TMD etc..
Background technology
In order to mitigate wind shake, the seismic response of structure and equipment, dissipative damping device can be arranged in structure and equipment
Dissipation energy, reaches the purpose for reducing structural response.Dissipative damping device can be divided into four classes by its Energy Dissipation Mechanism：Viscoplasticity hinders
Buddhist nun's device, viscous damper, metal damper and frcition damper.Wherein frcition damper is simple in construction, cheap, easily dimension
Shield, is more suitable for popularization and application.But the mostly similar rectangle of its hysteretic behavior, i.e., in the presence of a critical value（Play sliding power）, when load is super
Cross after the value, device starts to slide, and its rigidity is changed into 0 during slip, and frictional force size is constant.The hysteretic characteristic of frcition damper
Its control effect is set to change with external load size.Further, since strong is non-linear so that the analysis and design of damper are compared with line
Property damper it is difficult.In order to overcome this shortcoming of normal frcition damper, Li Hongnan etc. has invented half active piezoelectric frictional damping
Device（Publication No. CN 1594775A）, change frictional force by changing normal pressure size, but device is complicated, it is necessary to certain energy
Source, implements and acquires a certain degree of difficulty.
In addition, in order to overcome normal frcition damper to provide the shortcoming of constant frictional force, applicant had once applied specially
Profit《Plate-type friction-changing damper》, the basic ideas of the invention are：Normal pressure size is constant in sliding friction block sliding process, will
The rubbing surface of rectangle is divided into 3 parts, and intermediate friction face coefficient of friction is small, and both sides rubbing surface coefficient of friction is big.When brake pad is static,
Contacted with intermediate friction face, when friction BOB(beginning of block) is slided, big two of coefficient of friction are slided to from the small intermediate friction face of coefficient of friction
Side rubbing surface, with the increase of displacement, the big coefficient of friction area increase that sliding block is contacted, frictional force increases therewith.Specific
Embodiment in, ball is installed in middle small coefficient of friction region（Needle roller）Or teflon coating is applied, later experiment is proved,
The damper startup frictional force of both schemes is larger, and frictional force adjustable extent is smaller.Further, since brake pad is overall, rub
Small out-of-flatness may result in normal pressure in different friction area skewness on wiping face, make the actual forces of damper-
Displacement curve has differences with theoretical displacement curve, and effect is undesirable.
The content of the invention
Based on above mentioned problem, the present invention proposes a kind of frictional force variable damper.To solve conventional friction damper
Frictional force size is immutable and technical problem of discontinuity.
Technical scheme is as follows：
A kind of frictional force variable damper, includes the sliding panel of upper friction plate, lower friction plate and centre, cross section is in
The upper and lower friction plate of concave and the sliding panel of centre are tightly pressed together by pretension bolt；The spiral shell of the pretension bolt
A disk spring is also compressed between cap and upper friction plate or lower friction plate；It is characterized in that：Sliding panel one end of described centre
Be provided with some groups of small brake pads, every group of small brake pad includes upper and lower two small brake pads of sliding panel both sides, small brake pad and
Set and have elastic component between sliding panel；The edge glide direction of sliding panel two is provided with screw-bearing；The band screw rod
Bearing can be rolled along upper and lower friction plate both sides bossing inwall；The upper and lower friction plate is formed by stacking by three layers, outermost
Set fluted in the middle of layer, ball is placed in groove；Intermediate layer is one flat plate, is placed on the ball in outermost layer, Ke Yixiang
For outermost layer movement；The superiors are divided into 5 parts along glide direction, are arranged symmetrically from centre to both sides, and respectively hit exactly No. 1 is rubbed
No. 3 rubbing surfaces on wiping face, No. 2 adjacent rubbing surfaces and both sides；No. 1 rubbing surface is the slot in the middle of the superiors
The rolling friction face that the needle roller row set in hole is constituted；The upper and lower contact surface of the needle roller row is small brake pad and centre respectively
Layer；The coefficient of friction of No. 1 rubbing surface, No. 2 rubbing surfaces and No. 3 rubbing surfaces increases successively；The outermost layer and the superiors
It is integral that end bosses are bolted installation.
Further, the small brake pad is arranged along sliding panel glide direction, and is not occurred in glide direction with sliding panel
Relative displacement；The sliding panel band small column, is inserted in the corresponding hole of small brake pad.
Further, the coefficient of friction of No. 1 rubbing surface is 0.005.
Further, the ball sets retainer, and retainer is fixed with friction plate outer layer.
Further, the intermediate layer and the face of ball contact set arc groove, and it is moved and play the guiding role.
Further, the needle roller row is provided with retainer, and retainer is fixed with the friction plate the superiors.
Further, the upper friction plate of the frictional force variable damper is connected with building structure, middle slip plate and TMD
Mass be connected.
The present invention operation principle be：When damper displacement is zero, the small brake pad on sliding panel is located in rubbing surface
Between No. 1 rubbing surface, small brake pad and needle roller row's top surface contacts, due to needle roller row relatively thereon, lower contact surface do not fix, hinder
Buddhist nun's device, which is slided, need to only overcome rolling friction, and damper plays sliding power very little；When damper displacement increase, small brake pad and No. 2 frictions
Face contact area is gradually increased, and frictional force gradually increases；When damper displacement arrives greatly certain limit, small brake pad and No. 3 frictions
Face is contacted, because No. 3 rubbing surface coefficient of frictions are very big, so as to realize that quick and stable is braked.
Beneficial effect：
1. frictional force of the present invention increases and increased with displacement, with limit function.Can be used for structure and equipment wind resistance,
Antidetonation, when being used in combination with TMD, shock isolation system, can greatly improve shock insulation, the damping effect of system, make system in small load
It is lower to start in time, play a role；Ensure the over-large displacement of limitation system while damping effect under big load.
2. the present invention based on normal pressure it is equally distributed it is assumed that using the change of rubbing surface coefficient of friction realize frictional force with
Displacement increases and increased.By using some groups independently small brake pad replace the big brake pad of monoblock, realizing differentiated friction region just
Pressure is identical, it is possible to prevente effectively from frictional force is pockety on the different zones rubbing surface that the small out-of-flatness of rubbing surface is caused
Phenomenon.Its simple structure, clear principle.
The operation principle that " friction-changing damper " 3. of the present invention is arranged based on needle roller, is realized really in low friction region
Rolling friction, adds the adjustable extent of damper frictional force.It plays sliding power very little, can make damper under the excitation of very little
Play a role, and add limit function, make damper will not be under big excitation, displacement is excessive.
4. the present invention will not produce additional stiffness after being arranged in structure to structure, the self-vibration of structure in itself is not interfered with special
Property.Meanwhile, the present invention can be made very big, can also be made very small, be applicable not only to heavy construction, be also applied for small building
With the vibration damping of equipment.Its is simple in construction, cheap, it is easy to produce, suitably in structure and equipment seismic resistance field popularization and application.
5. present invention, avoiding conventional linear damper（Such as oil damper）Cost is high, safeguards complicated, the shortcoming of easy oil leakage；
Normal frcition damper is overcome the problem of can not maintain like control effect under different size load action.
Brief description of the drawings
Fig. 1 is frictional force variable damper structural map of the present invention；
Fig. 2 is the upper friction plate plan of the present invention；
Fig. 3 is A-A profiles in Fig. 2；
Fig. 4 is B-B profiles in Fig. 2；
Fig. 5 is C-C profiles in Fig. 2；
Fig. 6 is A1-A1 profiles in Fig. 2；
Fig. 7 is A2-A2 profiles in Fig. 2；
Fig. 8 is A3-A3 profiles in Fig. 2；
Fig. 9 is A4-A4 profiles in Fig. 2；
Figure 10 is friction plate outermost layer plan of the present invention；
Figure 11 is sliding panel plan of the present invention；
Figure 12 is A1-A1 profiles in Figure 11；
Figure 13 is A2-A2 profiles in Figure 11；
Figure 14 is A-A profiles in Figure 11；
Figure 15 is B-B profiles in Figure 11；
Figure 16 is C-C profiles in Figure 11；
In figure, the upper friction plates of 1-；Friction plate under 2-；3- sliding panels；4- pretension bolts；5- disk springs；The small brake pads of 6-；
7- small columns；8- flexible members；9- band screw-bearings；14- sliding panel connecting holes；15- holes；20- outermost layers；21- grooves；22-
Ball；23- intermediate layers；The 24- the superiors；26- needle rollers are arranged；27- mounting holes；28- bolts；No. 2 rubbing surfaces of 29-；30- 3 rubs
Wiping face.
Embodiment
As illustrated in figs. 1-16, a kind of frictional force variable damper of the invention, including upper friction plate 1, lower friction plate 2 and
Middle sliding panel 3, cross section passes through pretension bolt 4 in the upper and lower friction plate 1,2 of concave and the sliding panel 3 of centre
It is tightly pressed together（Pretension bolt 4 and its mounting hole are referring to Fig. 1, not shown in Fig. 2-16）.The nut of pretension bolt 4 and upper friction
A disk spring 5 is also compressed between plate 1 or lower friction plate 2.The space that sliding panel 3 is formed in upper and lower concave friction plate
Inside do linear slide（Such as Fig. 1, shown in 11-16）.Normal pressure between upper and lower friction plate 1,2 and the contact surface of sliding panel 3 of centre
Controlled by changing the decrement of disk spring 5.As illustrated in figures 11-16, middle one end of sliding panel 3 is provided with some groups small
Brake pad 6, every group small brake pad 6 includes upper and lower two small brake pads 6 of the both sides of sliding panel 3, small brake pad 6 and sliding panel 3 it
Between set and have elastic component 8, under positive pressure, upper and lower small brake pad 6 is in close contact with upper and lower friction plate 1,2 all the time.
Small brake pad 6 is arranged along the glide direction of sliding panel 3, and does not occur relative displacement in glide direction with sliding panel 3.The sliding panel
3 band small columns 7, are inserted in the corresponding hole 15 of small brake pad 6.3 liang of edge glide directions of sliding panel are provided with screw-bearing 9.
Band screw-bearing 9 can be rolled along upper and lower friction plate 1,2 both sides bossing inwalls so that sliding panel 3 is upper and lower in concave
Linear slide is done in the space of the formation of friction plate 1,2.
Wherein, as Figure 1-10 shows, upper and lower friction plate 1,2 is formed by stacking by three layers, is provided with the middle of outermost layer 20 recessed
Ball 22 is placed in groove 21, groove, ball 22 sets retainer, and retainer is fixed with friction plate outer layer.Intermediate layer 23 is
One flat plate, is placed on the ball 22 in outermost layer 20, can be moved relative to outermost layer 20.Intermediate layer 23 is contacted with ball 22
Face set arc groove, it is moved and play the guiding role.The superiors 24 are divided into 5 parts along glide direction, from centre to both sides pair
Claim No. 3 rubbing surfaces 30 on arrangement, No. 1 rubbing surface respectively hit exactly, No. 2 adjacent rubbing surfaces 29 and both sides.No. 1 friction
Face is the rolling friction face that the needle roller row 26 set in the rectangle hole in the middle of the superiors 24 is constituted.Needle roller row 26 it is upper,
Lower contact surface is the friction of small brake pad 6 and the rubbing surface of intermediate layer 23,1, No. 2 rubbing surfaces 29 and No. 3 rubbing surfaces 30 respectively
Coefficient increases successively, wherein, needle roller row 26 is provided with retainer, and retainer and the friction plate the superiors 24 are fixed, No. 1 friction
The coefficient of friction in face is 0.005, No. 2 rubbing surfaces 29, and its coefficient of friction is selected according to the Hysteresis Behavior the need for damper,
On most side is No. 3 rubbing surfaces 30, and its coefficient of friction should be as big as possible, realizes fast braking.Outermost layer 20 and the superiors 24
End bosses are fixedly mounted integral by bolt 28.
The upper friction plate 1 of frictional force variable damper of the present invention can be connected with building structure, and middle slip plate 3 can be with
TMD（TUNED MASS DAMPER are tuned mass damper）Mass be connected.
Above is a kind of exemplary embodiment of the present invention, specific implementation not limited to this of the invention.
Claims (7)
1. a kind of frictional force variable damper, including upper friction plate（1）, lower friction plate（2）And middle sliding panel（3）, it is horizontal
Section is in the upper and lower friction plate of concave（1、2）And middle sliding panel（3）Pass through pretension bolt（4）It is tightly pressed together；
The pretension bolt（4）Nut and upper friction plate（1）Or lower friction plate（2）Between be also compressed with a disk spring（5）；Its feature
It is：The sliding panel of described centre（3）One end is provided with some groups of small brake pads（6）, every group of small brake pad（6）Include slip
Plate（3）Upper and lower two small brake pads of both sides（6）, small brake pad（6）And sliding panel（3）Between set and have elastic component（8）；
The sliding panel（3）Two edge glide directions are provided with screw-bearing（9）；The band screw-bearing（9）Can be along upper and lower friction
Plate（1、2）Both sides bossing inwall is rolled；The upper and lower friction plate（1、2）It is formed by stacking by three layers, outermost layer（20）In
Between set fluted（21）, groove is interior to place ball（22）；Intermediate layer（23）It is one flat plate, is placed in outermost layer（20）In rolling
Pearl（22）On, can be relative to outermost layer（20）It is mobile；The superiors（24）It is divided into 5 parts along glide direction, from centre to both sides pair
Claim arrangement, No. 1 rubbing surface respectively hit exactly, No. 2 adjacent rubbing surfaces（29）With No. 3 rubbing surfaces on both sides（30）；Described 1
Number rubbing surface is by the superiors（24）The needle roller row set in middle rectangle hole（26）The rolling friction face of composition；It is described
Needle roller is arranged（26）Upper and lower contact surface be small brake pad respectively（6）And intermediate layer（23）；No. 1 rubbing surface, No. 2 rubbing surfaces
（29）And No. 3 rubbing surfaces（30）Coefficient of friction increase successively；The outermost layer（20）And the superiors（24）End bosses are led to
Cross bolt（28）It is fixedly mounted integral.
2. a kind of frictional force variable damper according to claim 1, it is characterised in that：The small brake pad（6）Edge is sliding
Dynamic plate（3）Glide direction is arranged, and and sliding panel（3）Do not occur relative displacement in glide direction；The sliding panel（3）Band roundlet
Post（7）, it is inserted in small brake pad（6）Corresponding hole（15）In.
3. a kind of frictional force variable damper according to claim 2, it is characterised in that：The friction of No. 1 rubbing surface
Coefficient is 0.005.
4. a kind of frictional force variable damper according to claim 1, it is characterised in that：The ball（22）It is provided with guarantor
Hold frame, and retainer and friction plate outermost layer（20）It is fixed.
5. a kind of frictional force variable damper according to claim 1, it is characterised in that：The needle roller row（26）It is provided with
Retainer, and retainer and the friction plate the superiors（24）It is fixed.
6. a kind of frictional force variable damper according to claim 1, it is characterised in that：The intermediate layer（23）With ball
（22）The face of contact sets arc groove, to intermediate layer（23）Glide direction play the guiding role.
7. a kind of frictional force variable damper according to claim 1, it is characterised in that：The frictional force variable damper
Upper friction plate（1）It is connected with building structure, middle slip plate（3）It is connected with TMD mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510748260.1A CN105297937B (en) | 2015-11-06 | 2015-11-06 | A kind of frictional force variable damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510748260.1A CN105297937B (en) | 2015-11-06 | 2015-11-06 | A kind of frictional force variable damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105297937A CN105297937A (en) | 2016-02-03 |
| CN105297937B true CN105297937B (en) | 2017-07-28 |
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| CN201510748260.1A Expired - Fee Related CN105297937B (en) | 2015-11-06 | 2015-11-06 | A kind of frictional force variable damper |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110145053B (en) * | 2017-10-21 | 2020-09-08 | 山东建筑大学 | Energy dissipation shock attenuation wall body |
| CN108457384B (en) * | 2018-01-18 | 2019-10-18 | 同济大学 | A kind of three-dimensional isolation/vibration support of the adaptive stiffness characteristics of band |
| CN110242090B (en) * | 2019-06-21 | 2020-11-17 | 苏州鼎智瑞光智能科技有限公司 | Self-resetting shock absorption damper and assembly construction method |
| CN114145598B (en) * | 2021-11-17 | 2022-10-14 | 徐州恒远高新技术有限公司 | Self-control element protection type movable display device and using method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201952934U (en) * | 2010-12-20 | 2011-08-31 | 张蓬勃 | Friction damper filled with aluminum plate friction material |
| CN202380601U (en) * | 2011-11-08 | 2012-08-15 | 建研科技股份有限公司 | Variable-friction damper |
| CN104088374A (en) * | 2014-06-12 | 2014-10-08 | 清华大学 | Metal composite friction damper |
| JP2014222095A (en) * | 2013-05-14 | 2014-11-27 | 株式会社安藤・間 | Friction damper |
| JP2015094463A (en) * | 2013-11-14 | 2015-05-18 | 学校法人君が淵学園 | Vibration damping device |
| CN205206074U (en) * | 2015-11-06 | 2016-05-04 | 湖北文理学院 | But frictional force variable damping ware |
-
2015
- 2015-11-06 CN CN201510748260.1A patent/CN105297937B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201952934U (en) * | 2010-12-20 | 2011-08-31 | 张蓬勃 | Friction damper filled with aluminum plate friction material |
| CN202380601U (en) * | 2011-11-08 | 2012-08-15 | 建研科技股份有限公司 | Variable-friction damper |
| JP2014222095A (en) * | 2013-05-14 | 2014-11-27 | 株式会社安藤・間 | Friction damper |
| JP2015094463A (en) * | 2013-11-14 | 2015-05-18 | 学校法人君が淵学園 | Vibration damping device |
| CN104088374A (en) * | 2014-06-12 | 2014-10-08 | 清华大学 | Metal composite friction damper |
| CN205206074U (en) * | 2015-11-06 | 2016-05-04 | 湖北文理学院 | But frictional force variable damping ware |
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