CN108729568A - A kind of box tandem type SMA frictions composite buffer - Google Patents
A kind of box tandem type SMA frictions composite buffer Download PDFInfo
- Publication number
- CN108729568A CN108729568A CN201810490762.2A CN201810490762A CN108729568A CN 108729568 A CN108729568 A CN 108729568A CN 201810490762 A CN201810490762 A CN 201810490762A CN 108729568 A CN108729568 A CN 108729568A
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- CN
- China
- Prior art keywords
- sma
- sliding panel
- brake pad
- damper
- babinet
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- 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.)
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 19
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 230000003068 static effect Effects 0.000 claims abstract description 5
- 238000005265 energy consumption Methods 0.000 claims description 14
- 238000004140 cleaning Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H9/00—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate
- E04H9/02—Buildings, groups of buildings or shelters adapted to withstand or provide protection against abnormal external influences, e.g. war-like action, earthquake or extreme climate withstanding earthquake or sinking of ground
- E04H9/021—Bearing, supporting or connecting constructions specially adapted for such buildings
Abstract
The present invention is a kind of box tandem type SMA frictions composite buffer, is mainly made of damper babinet, limiting slot, sliding slot, sliding panel, rounded stops, gag lever post, marmem (SMA) silk and operating bar one, brake pad and operating bar two.Operating bar one passes through two pieces of sliding panels, and is fixed with a pair of of rounded stops thereon, and sliding panel interior side contacts but is not fixed；Operating bar two is fixed across damper left side wall with brake pad left end.Two pieces of sliding panels are more slightly lower than damper wall box, and can horizontally slip in the sliding slot of damper wall box, and SMA are fixed between two sliding panels；Brake pad is more slightly higher than damper wall box, and both sides are fixed with gag lever post, can be slided in the limiting slot on damper wall box, and there are round hole slots on the left of axle center, can be inserted when operating bar one being made to move downward.The maximum static friction force of brake pad is equal to the maximum pull in SMA motion processes, and when ensureing to shake greatly, SMA first work, and then brake pad proceeds with one's work immediately.
Description
Technical field
The invention belongs to technical field of civil engineering, are related to Structure uniformity, more particularly to a kind of box tandem type SMA
Rub composite buffer.
Background technology
Passive control is a kind of damping control technology not needing extra power, usually additional at some position of structure
One subsystem, or processing structurally is done with the dynamic characteristics for the structural system that strikes a bargain to certain components of structure itself.Passively
Control because its simple structure, low cost, it is easy to maintain and without extra power support the advantages that as current application and development heat
Point, many passive control technologies have reached its maturity, and have been used widely in Practical Project.
Frcition damper is common a kind of energy-consumption shock-absorption device in engineering structure, has simple structure, performance stabilization, consumption
The strong advantage of energy ability, but due to needing to overcome frictional force that could start, medium and small shake is likely to " locking " occur, loses energy consumption energy
Power, in addition enlarged structure earthquake response.SMA dampers easily start up, and fatigue performance is good, and can reset.The two combines system
At composite buffer new thinking will be opened up to passive control technology.As publication number CN101196017A devises compound shape
Shape memory alloys frcition damper, but SMA units and friction element work simultaneously, still can't resolve damper and start hardly possible
Problem；Although publication number CN202627247U devises a kind of tandem super-elastic shape memory alloy frcition damper, due to
It is strip band type damper, is only fixed using high-strength bolt in friction element one end, and the SMA units construction of the other end is multiple
Miscellaneous, overall stability is relatively low.
Invention content
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of box tandem type SMA to rub
Composite buffer, simple structure, power transmission are reasonable, performance is stablized, and SMA is made full use of to easily start up, and frcition damper consumes energy energy
The strong advantage of power is suitable for the vibration control of varying strength.
To achieve the goals above, the technical solution adopted by the present invention is：
A kind of box tandem type SMA frictions composite buffer, includes the damper babinet 1 with head cover 11, in damper
Friction energy-dissipating unit and SMA energy consumption units are provided in babinet 1, wherein
The friction energy-dissipating unit is mainly made of brake pad 2, gag lever post 8 and operating bar 2 10, and brake pad 2 is in damper
In babinet 1, gag lever post 8 is fixed on the front/rear end of brake pad 2, limit of 8 both ends of gag lever post in 1 front-rear side walls of damper babinet
It horizontally slips in slot 12, operating bar 2 10 is fixedly connected with the left side of brake pad 2, brake pad 2 across 1 left side wall of damper babinet
There are round hole slots for right side, to mitigate damper weight, and while making operating bar 1 move downward, can be inserted；
The SMA energy consumption unit is mainly made of sliding panel 1, sliding panel 24, operating bar 1 and SMA silks 7, is slided
Plate 1 and sliding panel 24 are mutually parallel and are vertically arranged in damper babinet 1, and SMA silks 7 are fixed on sliding panel 1 and slide
Between movable plate 24, the rear and front end of sliding panel 1, which is stuck in the sliding slot 1 of 1 front-rear side walls of damper babinet, to horizontally slip, sliding
The rear and front end of movable plate 24 is stuck in the sliding slot 2 15 of 1 front-rear side walls of damper babinet and horizontally slips, and operating bar 1 is worn successively
The right side wall of sliding panel 1, sliding panel 24 and babinet 1 is crossed, and left end stretches out sliding panel 1, the round hole slot with brake pad 2
It is corresponding.
Frictional force between the brake pad 2 and 1 bottom plate of damper babinet and head cover 11 is by the fixation spiral shell on head cover 11
Nail 13 provides.
The brake pad 2 is higher than 1 side wall of damper babinet, and sliding panel 1 is with sliding panel 24 than 1 side of damper babinet
Wall is slightly lower.
The SMA silks 7 are applied with certain prestressing force.
One 9 left end of the operating bar stretches out length of the extension elongation more than sliding slot 1 of sliding panel 1, is less than brake pad
The length of 2 round hole slots.
The operating bar 2 10 is connected to the left side center of brake pad 2, and the circle hole slot is on the right side of brake pad 2
Center side position, hole slot length direction are the left and right directions of brake pad 2.
One 3 right side of the sliding panel is provided with rounded stops 1, and 24 left side of sliding panel is provided with rounded stops 26, circle
Shape block 1 and rounded stops 26 are passed through by operating bar 1 and are fixed on operating bar 1.
The rounded stops 1 are contacted but are not fixed with sliding panel 1, and rounded stops 26 contact but not with sliding panel 24
It is fixed, can sliding panel be driven to move when ensureing one 9 side-to-side movement of operating bar, to make the tension always of SMA silks 7.
The maximum static friction force of the brake pad 2 is equal to the maximum pull of SMA silks 7, when ensureing big shake, SMA energy consumptions
Unit first works, and then friction energy-dissipating unit can proceed with one's work immediately.
Compared with prior art, present invention has the advantage that：Simple structure, power transmission is reasonable, performance is stable, is applicable in model
It encloses wide.When small shake, SMA can start, and effectively consume energy；And when big shake, consume energy cell translation, frcition damper work, together
Sample can play the role of effective vibration damping.It overcomes friction energy dissipation device rubbing surface in small shake to be difficult to slide, SMA dampers are big
Consume energy insufficient problem when shake.
Description of the drawings
Fig. 1 is the profile in plan of box tandem type SMA frictions composite buffer of the present invention.
Fig. 2 is the preceding elevation of box tandem type SMA frictions composite buffer of the present invention.
Fig. 3 is the left view of sliding panel one of the present invention.
In figure：1. damper babinet；2. brake pad；3. sliding panel one；4. sliding panel two；5. rounded stops one；6. round
Block two；7.SMA；8. gag lever post；9. operating bar one；10. operating bar two；11. head cover；12. limiting slot；13. fixing screws；
14. sliding slot.
Specific implementation mode
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
Such as Fig. 1, Fig. 2, shown in Fig. 3, a kind of box tandem type SMA frictions composite buffer of the present invention, mainly by damper
Babinet 1, head cover 11, fixing screws 13, sliding panel 1, sliding panel 24, operating bar 1, rounded stops 1, rounded stops two
6, SMA silks 7, sliding slot 1, sliding slot 2 15, brake pad 2, gag lever post 8, limiting slot 12 and operating bar 2 10 form.
Wherein, sliding panel 1, sliding panel 24, operating bar 1, rounded stops 1, rounded stops 26, SMA silks 7 form
SMA energy consumption units；Brake pad 2, gag lever post 8 and operating bar 2 10 form friction energy-dissipating unit.When to ensure big shake, SMA
Energy consumption unit first works, and then friction energy-dissipating unit can be equal to SMA silks 7 immediately followed by work, the maximum static friction force of brake pad 2
Maximum pull in motion process.Operating bar 1 passes through the right side wall of sliding panel 1 and sliding panel 24 and babinet 1, and left end
Stretch out sliding panel 1；Operating bar 2 10 passes through 1 right side wall of damper babinet and the left end face center of brake pad 2 to fix.SMA
Silk 7 is fixed between sliding panel 1 and sliding panel 24, and applies certain prestressing force to increase the energy dissipation capacity of SMA silks 7.Resistance
Buddhist nun's device babinet 1 is connect with the fixing screws 13 of head cover 11, to provide the friction between brake pad 2 and 1 bottom plate of babinet and head cover 11
Power.
There are round hole slots on the left of 2 axle center of brake pad mitigates simultaneously so that operating bar 1 can be inserted when moving downward
Damper weight.
On the inside of two sliding panel, it is fixed with a pair of of rounded stops on operating bar 1, contacts but is not fixed with sliding panel,
Can sliding panel be driven to move when ensureing one 9 side-to-side movement of operating bar, make the tension always of SMA silks 7.That is, right in sliding panel 1
Rounded stops 1 are arranged in side, and rounded stops 26 are arranged in 24 left side of sliding panel, and rounded stops 1 and rounded stops 26 are made
Lever 1 passes through and is fixed on operating bar 1.Rounded stops 1 are contacted but are not fixed with sliding panel 1, rounded stops 26 with
Sliding panel 24 is contacted but is not fixed, and can sliding panel be driven to move when ensureing one 9 side-to-side movement of operating bar, to make SMA
7 tension always of silk.
To ensure that brake pad 2 can effectively generate friction, and prevent slide displacement excessive, brake pad 2 should compare damper
1 side wall of babinet is slightly higher, and side wall is fixed with gag lever post 8, can make in limiting slot 12 of the brake pad 2 on damper wall box 1
Sliding.
To ensure that SMA silks 7 work independently, do not rub, sliding panel 1 is with sliding panel 24 than 1 side of damper babinet
Wall is slightly lower, and horizontally slips in the sliding slot 1 and sliding slot 2 15 of 1 side wall of damper babinet respectively.
When vibrating generation, operating bar 1 first moves, no matter still moving right to the left at this time, two pieces of sliding panels always have
One piece is blocked by sliding slot, and another piece of movement, the energy consumption of 7 tension of SMA silks, brake pad 2 is static, and operating bar 2 10 is equivalent to fixed link；
When vibrating enhancing, the sliding panel of movement is also blocked by sliding slot, and SMA energy consumption units are stationary at this time, and operating bar 1 is suitable
In fixed link, 2 10 setting in motion of operating bar drives brake pad 2 to generate sliding friction energy consumption.
Claims (9)
- The composite buffer 1. a kind of box tandem type SMA rubs, including carry the damper babinet (1) of head cover (11), feature It is, friction energy-dissipating unit and SMA energy consumption units is provided in damper babinet (1), whereinThe friction energy-dissipating unit is mainly made of brake pad (2), gag lever post (8) and operating bar two (10), and brake pad (2) is hindering In Buddhist nun's device babinet (1), gag lever post (8) is fixed on the front/rear end of brake pad (2), and gag lever post (8) both ends are in damper babinet (1) It horizontally slips in the limiting slot (12) of front-rear side walls, operating bar two (10) is fixedly connected across damper babinet (1) left side wall and rubs The left side of cleaning block (2), there are round hole slots for the right side of brake pad (2)；The SMA energy consumption unit is mainly made of sliding panel one (3), sliding panel two (4), operating bar one (9) and SMA (7), Sliding panel one (3) and sliding panel two (4) are mutually parallel and are vertically arranged in damper babinet (1), and SMA (7) are fixed on Between sliding panel one (3) and sliding panel two (4), the rear and front end of sliding panel one (3) is stuck in damper babinet (1) front-rear side walls It horizontally slips in sliding slot one (14), the rear and front end of sliding panel two (4) is stuck in the sliding slot two of damper babinet (1) front-rear side walls (15) it horizontally slipping in, operating bar one (9) sequentially passes through the right side wall of sliding panel one (3), sliding panel two (4) and babinet (1), and Left end stretches out sliding panel one (3), corresponding with the round hole slot of brake pad (2).
- 2. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that brake pad (2) ratio Damper babinet (1) side wall is high, and sliding panel one (3) is more slightly lower than damper babinet (1) side wall with sliding panel two (4).
- 3. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that SMA described (7) are applied Added with certain prestressing force.
- 4. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that the operating bar one (9) Left end stretches out length of the extension elongation more than sliding slot one (14) of sliding panel one (3), is less than the length of the round hole slot of brake pad (2) Degree.
- 5. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that the operating bar two (10) be connected to the left side center of brake pad (2), the circle hole slot in the right side center of brake pad (2), Hole slot length direction is the left and right directions of brake pad (2).
- 6. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that the sliding panel one (3) Right side is provided with rounded stops one (5), and rounded stops two (6), rounded stops one (5) and circle are provided on the left of sliding panel two (4) Shape block two (6) is passed through by operating bar one (9) and is fixed on operating bar one (9).
- 7. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that the rounded stops one (5) it contacts but is not fixed with sliding panel one (3), rounded stops two (6) are contacted but are not fixed with sliding panel two (4), to ensure to make Can sliding panel be driven to move when lever one (9) side-to-side movement, to make SMA (7) tension always.
- 8. box tandem type SMA frictions composite buffer according to claim 1, which is characterized in that the brake pad (2) Maximum static friction force is equal to the maximum pull of SMA (7), and when ensureing big shake, SMA energy consumption units first work, and then rub Energy consumption unit can proceed with one's work immediately.
- 9. box tandem type SMA rubs composite buffer according to claim 1, which is characterized in that the brake pad (2) with Frictional force between damper babinet (1) bottom plate and head cover (11) is provided by the fixing screws (13) on head cover (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490762.2A CN108729568B (en) | 2018-05-21 | 2018-05-21 | Box type serial SMA friction composite damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810490762.2A CN108729568B (en) | 2018-05-21 | 2018-05-21 | Box type serial SMA friction composite damper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108729568A true CN108729568A (en) | 2018-11-02 |
| CN108729568B CN108729568B (en) | 2024-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810490762.2A Active CN108729568B (en) | 2018-05-21 | 2018-05-21 | Box type serial SMA friction composite damper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117266396A (en) * | 2023-11-23 | 2023-12-22 | 中国建筑第六工程局有限公司 | Self-resetting damping device based on SMA and polyurethane materials |
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| CN108729568B (en) | 2024-01-12 |
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