CN109519498A - SMA Self-resetting becomes friction damping device - Google Patents
SMA Self-resetting becomes friction damping device Download PDFInfo
- Publication number
- CN109519498A CN109519498A CN201811551607.3A CN201811551607A CN109519498A CN 109519498 A CN109519498 A CN 109519498A CN 201811551607 A CN201811551607 A CN 201811551607A CN 109519498 A CN109519498 A CN 109519498A
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- Prior art keywords
- piston
- sma
- several
- resetting
- secondary spring
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Links
- 238000013016 damping Methods 0.000 title claims abstract description 23
- 230000000694 effects Effects 0.000 abstract description 9
- 230000007246 mechanism Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003446 memory effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 229910001285 shape-memory alloy Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
Abstract
Become friction damping device the invention discloses a kind of SMA Self-resetting, including an outer cylinder, a piston, secondary spring on one, once secondary spring, silk cable under silk cable and several SMA on several SMA.SMA Self-resetting change friction damping device of the invention is of simple structure and low cost, performance is stablized, and detachable, is easily changed when the damage of damper internal part.Piston in the present invention under silk cable and SMA under the collective effect of silk cable, has good Self-resetting effect on upper secondary spring, lower secondary spring, SMA.
Description
Technical field
The invention belongs to damping unit technical fields, and in particular to a kind of SMA Self-resetting change friction damping device.
Background technique
To mitigate dynamic response and damage accumulation of the civil engineering structure under the effect of the disasters such as earthquake, high wind, can tie
Vibration absorber is added in structure with the external input energy that dissipates, and protects main structure safety.Frcition damper simple structure, installation side
Just, and energy-dissipating property is not affected by temperature, and is common a kind of dissipative damping device in building structure.But traditional frictional damping
Device structure is single, and rubbing surface normal pressure and coefficient of friction cannot voluntarily change, and without self-resetting capability.Marmem
(SMA) it is used as a kind of new material, the research and application in terms of the antidetonation of civil engineering are fast-developing.SMA has unique
Shape memory effect and super elastic characteristics.In addition, using super elastic shape memory alloy effect design damper, durability and
Corrosion resistance is preferable, allows large deformation and deform to restore, but the equivalent viscous damping of SMA is insufficient to allow it as unique
Damping unit.
Summary of the invention
The purpose of the present invention is providing a kind of SMA Self-resetting change friction damping device.
The specific technical solution of the present invention is as follows:
A kind of SMA Self-resetting change friction damping device, including
One outer cylinder, the upper end are covered with a upper cylinder cover, and lower cover is equipped with cylinder cap, and the internal diameter of inner cavity is from centre
It is gradually reduced to upper and lower ends, upper cylinder cover has a through-hole, and lower cylinder cap has a jointing；
One piston, the upper end are equipped with a sliding axle, and lateral wall is surrounded with posterior limiting, along the week of piston on the elastic layer
To equipped with several friction plates；
Secondary spring on one；
Secondary spring once；
Silk cable on several SMA；
With silk cable under several SMA；
Piston is slideably positioned in the inner cavity of outer cylinder by its elastic layer and several friction plates；Sliding axle runs through upper cylinder cover
Through-hole；Upper secondary spring is socketed sliding axle, and the upper end contact upper cylinder cover, lower end contact piston；The upper end of lower secondary spring
Contact piston, cylinder cap under the contact of lower end；The upper end of silk cable connects upper cylinder cover on several SMA, and lower end connects piston；Under several SMA
The upper end of silk cable connects piston, and lower end connects lower cylinder cap；On several SMA under silk cable and several SMA silk cable along the piston
It is circumferential symmetrical at equal intervals.
In a preferred embodiment of the invention, the upper end of the piston has a piston upper head plate, the sliding
It is located on the piston upper head plate, the lower end contact of the upper secondary spring piston upper head plate, is also set on the piston upper head plate
There are several upper fixed rings to connect the lower end of silk cable on several SMA.
It is further preferred that the lower surface of the upper cylinder cover is equipped with a sliding axle position block, the sliding axle runs through should
Sliding axle position block is to guarantee sliding axle axially movable, the upper end contact of upper secondary spring sliding axle positioning gear
Block.
In a preferred embodiment of the invention, the lower end of the piston has a piston plate, auxiliary under described
The upper end contact of the spring piston plate is helped, it is described several to connect to be additionally provided with several lower fixed rings on the piston plate
The upper end of silk cable under SMA.
It is further preferred that the upper surface of the lower cylinder cap is equipped with a spring fastening, the lower end of the lower secondary spring is pushed up
To the spring fastening.
In a preferred embodiment of the invention, there is gap between several friction plates.
In a preferred embodiment of the invention, the outer surface of the friction plate is along the axial direction of the outer cylinder in song
Planar.
The beneficial effects of the present invention are:
1, SMA Self-resetting of the invention change friction damping device is of simple structure and low cost, performance is stable, and detachable,
It is easily changed when the damage of damper internal part.
2, the internal diameter that SMA Self-resetting of the invention becomes in the middle part of the outer cylinder of friction damping device is slightly larger than other positions, living
The mobile range for filling in relative initial position is bigger, and the frictional force of generation is bigger, and friction energy-dissipating effect is also better.
3, piston is connected with secondary spring and SMA cables in SMA Self-resetting of the invention change friction damping device, has good
Good Self-resetting effect.
Detailed description of the invention
Fig. 1 is structure sectional view of the invention.
Fig. 2 be Fig. 1 along the sectional view of A-A.
Fig. 3 is top view of the invention.
Fig. 4 is bottom view of the invention.
Specific embodiment
Technical solution of the present invention is further explained and described below by way of specific embodiment combination attached drawing.
As shown in Figures 1 to 4, a kind of SMA Self-resetting becomes on friction damping device, including an outer cylinder 1, a piston 2, one
Silk cable 6 under silk cable 5 and several SMA on secondary spring 3, once secondary spring 4, several SMA.Piston 2 upper secondary spring 3, under
Under the upper silk cable 5 of secondary spring 4, SMA and SMA under the collective effect of silk cable 6, there is good Self-resetting effect.
Outer cylinder 1, the upper end are covered with a upper cylinder cover 11, and lower cover is equipped with cylinder cap 12, pass through tack spiral shell respectively
Nail 13 is connected with outer cylinder 1, and the internal diameter of inner cavity is gradually reduced from intermediate both ends lower upwards (is preferably in from intermediate both ends lower upwards
Arcuation is gradually reduced), upper cylinder cover 11 has a through-hole 110, and lower cylinder cap 12 has a jointing 120；
Piston 2, the upper end are equipped with a sliding axle 20, and lateral wall is surrounded with posterior limiting 21 (material preferred rubber), should
Several friction plates 22 are circumferentially with along piston 2 on elastic layer 21.
As depicted in figs. 1 and 2, piston 2 is slideably positioned in the interior of outer cylinder 1 by its elastic layer 21 and several friction plates 22
In chamber, compression can be generated since 1 internal diameter of outer cylinder reduces elastic layer 21 when 2 relative equilibrium position of piston occurs mobile, it is described
There is gap 220 between several friction plates 22, when guaranteeing that piston 2 is mobile, do not contacted between adjacent friction plate 22, prevent from living
Plug 2 is locked, and the outer surface of friction plate 22 forms with 1 inner wall of outer cylinder and slides along the axial direction shape in curved surface of the outer cylinder 1
The mobile range in face, 2 relative initial position of piston is bigger, and the frictional force of generation is bigger, and friction energy-dissipating effect is also better；Sliding axle
20 run through the through-hole 110 of upper cylinder cover 11；Upper secondary spring 3 is socketed sliding axle 20, and the upper end contact upper cylinder cover 11, lower end contact
Piston 2；The upper end contact piston 2 of lower secondary spring 4, cylinder cap 12 under the contact of lower end；On several SMA in the upper end connection of silk cable 5
Cylinder cap 11, lower end connect piston 2；The upper end of silk cable 6 connects piston 2 under several SMA, and lower end connects lower cylinder cap 12.On several SMA
Silk cable 5 and several SMA under silk cable 6 it is parallel with the axis of the outer cylinder 1 and right at equal intervals along the circumferential direction of the piston 2
Claim distribution.
Preferably, as shown in Figure 1, on several SMA the upper end of silk cable 5 be set to upper cylinder cover 11 several upper connection machines
Structure 111 is connected, and each upper bindiny mechanism 111 includes fixing bolt 1112, upper fixture nut in fixture nut 1111 and one on one
1111 are set to outside upper cylinder cover 11, and are adapted to the upper end of upper fixing bolt 1112, and upper fixing bolt 1112 is set in advance through adaptation
The upper end of tapped through hole on upper cylinder cover 11, the upper silk cable 5 of SMA is connected with the lower end of upper fixing bolt 1112.Under several SMA
The lower end of silk cable 6 is connected with several lower bindiny mechanisms 121 for being set to lower cylinder cap 12, includes solid per bindiny mechanism 121 once
Determine nut 1211 and once fixing bolt 1212, lower fixture nut 1211 is set to outside lower cylinder cap 12, and is adapted to lower fixing bolt
1212 lower end, lower fixing bolt 1212 is set to the tapped through hole on lower cylinder cap 12 through adaptation in advance, under SMA under silk cable 6
End is connected with the upper end of lower fixing bolt 1212.
The upper end of the piston 2 has a piston upper head plate 23, and the sliding axle 20 is set on the piston upper head plate 23, institute
State the lower end contact of the secondary spring 3 piston upper head plate 23, be additionally provided on the piston upper head plate 23 several upper fixed rings 230 with
Connect the lower end of silk cable 5 on several SMA.The lower surface of the upper cylinder cover 11 is equipped with a sliding axle position block 112, described
Sliding axle 20 through the sliding axle position block 112 to guarantee sliding axle 20 axially movable, the upper end of the upper secondary spring 3
The contact sliding axle position block 112.
The lower end of the piston 2 has a piston plate 24, the upper end contact of the lower secondary spring 4 piston
Plate 24 is additionally provided with several lower fixed rings 240 to connect the upper end of silk cable 6 under several SMA on the piston plate 24.It is described
The upper surface of lower cylinder cap 12 is equipped with a spring fastening 122 to support lower secondary spring 4, the lower end contact of the lower secondary spring 4
The spring fastening 122.
The foregoing is only a preferred embodiment of the present invention, the range that the present invention that therefore, it cannot be limited according to is implemented, i.e.,
Equivalent changes and modifications made in accordance with the scope of the invention and the contents of the specification should still be within the scope of the present invention.
Claims (7)
1.SMA Self-resetting becomes friction damping device, it is characterised in that: including
One outer cylinder, the upper end are covered with a upper cylinder cover, and lower cover is equipped with cylinder cap, and the internal diameter of inner cavity is upward from centre
Lower both ends are gradually reduced, and upper cylinder cover has a through-hole, and lower cylinder cap has a jointing；
One piston, the upper end are equipped with a sliding axle, and lateral wall is surrounded with posterior limiting, and the circumferential direction on the elastic layer along piston is set
There are several friction plates；
Secondary spring on one；
Secondary spring once；
Silk cable on several SMA；
With silk cable under several SMA；
Piston is slideably positioned in the inner cavity of outer cylinder by its elastic layer and several friction plates；Sliding axle is through the logical of upper cylinder cover
Hole；Upper secondary spring is socketed sliding axle, and the upper end contact upper cylinder cover, lower end contact piston；The upper end contact of lower secondary spring
Piston, cylinder cap under the contact of lower end；The upper end of silk cable connects upper cylinder cover on several SMA, and lower end connects piston；Silk cable under several SMA
Upper end connect piston, lower end connects lower cylinder cap；On several SMA under silk cable and several SMA silk cable along the circumferential direction of the piston
It is symmetrical at equal intervals.
2. SMA Self-resetting as described in claim 1 becomes friction damping device, it is characterised in that: the upper end of the piston has
One piston upper head plate, the sliding axle are set on the piston upper head plate, the lower end contact of the upper secondary spring piston upper end
Plate is additionally provided with several upper fixed rings to connect the lower end of silk cable on several SMA on the piston upper head plate.
3. SMA Self-resetting as claimed in claim 2 becomes friction damping device, it is characterised in that: the lower surface of the upper cylinder cover
Equipped with a sliding axle position block, the sliding axle through the sliding axle position block to guarantee sliding axle axially movable, institute
State the upper end contact of the secondary spring sliding axle position block.
4. SMA Self-resetting as described in claim 1 becomes friction damping device, it is characterised in that: the lower end of the piston has
One piston plate, the upper end contact of the lower secondary spring piston plate, be additionally provided on the piston plate it is several under
Fixed ring is to connect the upper end of silk cable under several SMA.
5. SMA Self-resetting as claimed in claim 4 becomes friction damping device, it is characterised in that: the upper surface of the lower cylinder cap
Equipped with a spring fastening, the lower end contact of the lower secondary spring spring fastening.
6. SMA Self-resetting as described in claim 1 becomes friction damping device, it is characterised in that: between several friction plates
With gap.
7. SMA Self-resetting as described in claim 1 becomes friction damping device, it is characterised in that: the outer surface of the friction plate
Along the axial direction of outer cylinder shape in curved surface.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2018109515660 | 2018-08-20 | ||
| CN201810951566 | 2018-08-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109519498A true CN109519498A (en) | 2019-03-26 |
Family
ID=65796685
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811551607.3A Pending CN109519498A (en) | 2018-08-20 | 2018-12-18 | SMA Self-resetting becomes friction damping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109519498A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109850071A (en) * | 2019-04-03 | 2019-06-07 | 哈尔滨工程大学 | A kind of double rigidity are double to pre-tighten shock mitigation system |
| CN110259242A (en) * | 2019-06-20 | 2019-09-20 | 同济大学 | A kind of composite spring-SMA re-centring damper |
| CN112576678A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201843226U (en) * | 2010-03-29 | 2011-05-25 | 王涛 | Variable-rigidity friction type energy-consumption damping device |
| CN104930100A (en) * | 2015-06-14 | 2015-09-23 | 中国电子科技集团公司第十研究所 | High-effect dry friction damping spring vibration isolator |
| CN205557886U (en) * | 2016-04-11 | 2016-09-07 | 燕山大学 | Compound friction damper of piston shape memory alloy |
| CN105971357A (en) * | 2016-06-02 | 2016-09-28 | 燕山大学 | Piston type SMA-piezoelectric composite variable friction damper |
-
2018
- 2018-12-18 CN CN201811551607.3A patent/CN109519498A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201843226U (en) * | 2010-03-29 | 2011-05-25 | 王涛 | Variable-rigidity friction type energy-consumption damping device |
| CN104930100A (en) * | 2015-06-14 | 2015-09-23 | 中国电子科技集团公司第十研究所 | High-effect dry friction damping spring vibration isolator |
| CN205557886U (en) * | 2016-04-11 | 2016-09-07 | 燕山大学 | Compound friction damper of piston shape memory alloy |
| CN105971357A (en) * | 2016-06-02 | 2016-09-28 | 燕山大学 | Piston type SMA-piezoelectric composite variable friction damper |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109850071A (en) * | 2019-04-03 | 2019-06-07 | 哈尔滨工程大学 | A kind of double rigidity are double to pre-tighten shock mitigation system |
| CN110259242A (en) * | 2019-06-20 | 2019-09-20 | 同济大学 | A kind of composite spring-SMA re-centring damper |
| CN112576678A (en) * | 2019-09-27 | 2021-03-30 | 中国电力科学研究院有限公司 | Vertical shock absorber and method for determining quality of damping liquid medium in vertical shock absorber |
| CN112576678B (en) * | 2019-09-27 | 2023-12-08 | 中国电力科学研究院有限公司 | Vertical vibration absorber and method for determining mass of damping fluid medium in vertical vibration absorber |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190326 |
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