CN201785888U - Shape memory alloy self-sensing damper - Google Patents
Shape memory alloy self-sensing damper Download PDFInfo
- Publication number
- CN201785888U CN201785888U CN2010202568416U CN201020256841U CN201785888U CN 201785888 U CN201785888 U CN 201785888U CN 2010202568416 U CN2010202568416 U CN 2010202568416U CN 201020256841 U CN201020256841 U CN 201020256841U CN 201785888 U CN201785888 U CN 201785888U
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- shape memory
- memory alloy
- slide block
- damper
- sliding guide
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Abstract
The utility model discloses a shape memory alloy self-sensing damper. Guide wheels are uniformly arranged at the upper part of the inner wall of a closed protective shell. The upper part of a sliding block contacts with the guide wheels so that the sliding block can reciprocate along the radial direction. One end of an austenite shape memory alloy wire set is connected with one end of an insulating connecting piece which is embedded into the two ends of the sliding block. The other end of the austenite shape memory alloy wire set is fixed at the two ends of the closed protective shell through draw-in bolts. The lower part of the sliding block is connected with one end of a transmission gear of which the other end is connected with the upper part of a sliding guide rod. The sliding guide rod reciprocates along the radial direction at the bottom part of the inner wall of the closed protective shell through the guide wheels which are arranged at the movement contact face of the inner wall of the closed protective shell and the sliding guide rod. The damper is reasonably arranged at a specific position in the structure, passively controls the structure, effectively reduces structural damage and at the same time can monitor in real time the displacement or deformation of the structure or a component under the action of load. The utility model has the advantages of simple conformation, strong practicality, and reliable performance and has vast application and commercial foreground.
Description
Technical field
The utility model is applicable to the earthquake resistant control in the field of civil engineering, relates to a kind of anti-seismic control device, particularly a kind of shape memory alloys self-sensing damper.
Background technology
Marmem (SMA) is because of having shape memory effect, multiple special mechanical property such as super elastic characteristics and high damping characteristic and receiving much concern.Along with the building span increase, highly increase and form of structure complicated day by day, the engineering structures of press the traditional design method design is difficult to avoid fully damaging and destruction in shake effect even normal use doughtily.Suppress the structural dynamic response that the external impetus load causes by vibration control technology, simultaneously structure being carried out health monitoring constantly is the effective means that improves safety of structure.And the good energy dissipation capacity and the sensing capabilities that utilize shape memory alloy material (normal temperature is austenitic state down) to be embodied can be applied to the effective way that structural vibration Passive Control and structure or the deformation of member are monitored by rational structure means.On the basis of the research of existing marmem damper research and invention and marmem sensor and invention, at structural seismic response and the malformation characteristics under load action, by improving the measure of marmem damper structure, design a more advanced shape memory alloys self-sensing damper.
Summary of the invention
The purpose of this utility model is, utilize under the normal temperature super-elasticity energy-dissipating property and large deformation sensing capabilities for the shape memory alloy material of austenitic state (SMA), at structure or the deformation of member characteristics of civil engineering structure under dynamic response under the geological process and dead load effect, design a kind of shape memory alloys self-sensing damper.
In order to realize above-mentioned technical assignment, the utility model is taked following technical scheme:
A kind of shape memory alloys self-sensing damper, comprise the enclosed protecting crust, travelling gear, directive wheel, slide block, turnbuckle, sliding guide, austenite shape memory alloy silk and connecting rod, above enclosed protecting crust inwall, evenly be provided with directive wheel, the slide block top contacts with directive wheel and makes slide block radially to move back and forth, the austenite shape memory alloy silk is organized an end and is connected with insulated connecting piece one end that embeds the slide block two ends, the austenite shape memory alloy silk group other end is fixed on enclosed protecting crust two ends by turnbuckle, the slide block below links to each other with travelling gear one end, the travelling gear other end links to each other with the sliding guide top, and sliding guide radially moves back and forth in enclosed protecting crust inwall bottom by the directive wheel that is arranged on enclosed protecting crust inwall and sliding guide motion contact surface.
Other technologies characteristics of the present utility model are as follows: respectively be provided with one group of signal output part and current input terminal at austenite shape memory alloy silk group two ends, austenite shape memory alloy silk group two ends are fixed on the connecting bolt by fastening bolt; The signal output part and the current input terminal of described marmem sensing element both sides all are connected on the transducer wire.
Described austenite shape memory alloy silk group is a super-elastic shape memory alloy, can be arranged to one or more groups between slide block.
The utility model is super-elasticity energy-dissipating property and the large deformation sensing capabilities that utilizes under the normal temperature to the shape memory alloy material of austenitic state (SMA), at structure or the deformation of member characteristics of civil engineering structure under dynamic response under the geological process and dead load effect, made the shape memory alloys self-sensing damper.This damper rationally is installed on privileged site in the structure, structure is carried out Passive Control, realize effectively reducing structural damage, can displacement or the distortion under load action monitor constantly structure or member simultaneously.This utility model simple structure practicality, dependable performance for the earthquake resistant control and the health monitoring of structure in the field of civil engineering provides a kind of effective ways, has wide application future and commercial promise.
Description of drawings
Fig. 1 is a general structure schematic diagram of the present utility model.
Wherein the numeral among the figure is represented respectively:
1. enclosed protecting crust, 2. travelling gear, 3. directive wheel, 4. insulated connecting piece, 5. tension spiral shell, 6. sliding guide, 7.SMA silk, 8. transducer wire, 9. slide block, 10. connecting rod, 11. signal output parts, 12. current input terminals
Below in conjunction with accompanying drawing the utility model is described in further detail.
The specific embodiment
Normal temperature down for the shape memory alloy material of austenitic state (SMA) in the process of its embodiment superelastic properties because of its internal crystal structure change absorb by the characteristic of external force and the caused energy of corresponding displacement with and the large deformation sensing characteristics.The utility model in conjunction with civil engineering structure in the dynamic response characteristics under the geological process and distortion under the dead load effect and displacement characteristics, designed a kind of shape memory alloys self-sensing damper, this damper rationally can be installed on privileged site in the structure, consume the part seismic energy that self is consumed by structure originally, thereby reduce the dynamic response that structure produces because of geological process, realize effectively reducing structural damage, utilize the constantly monitoring of its self-sensing function realization simultaneously structure or the deformation of member or displacement.
Referring to Fig. 1, shape memory alloys self-sensing damper of the present utility model, comprise enclosed protecting crust 1, travelling gear 2, directive wheel 3, slide block 9, turnbuckle 5, sliding guide 6, austenite shape memory alloy silk 7 and connecting rod 10, above enclosed protecting crust 1 inwall, evenly be provided with directive wheel 3, slide block 9 tops contact with directive wheel 3 and make slide block 9 radially to move back and forth, the austenite shape memory alloy silk is organized 7 one ends and is connected with insulated connecting piece 4 one ends that embed slide block 9 two ends, the austenite shape memory alloy silk is organized 7 other ends and is fixed on enclosed protecting crust 1 two ends by turnbuckle 5, slide block 9 belows link to each other with travelling gear 2 one ends, travelling gear 2 other ends link to each other with sliding guide 6 tops, and sliding guide 6 radially moves back and forth in enclosed protecting crust 1 inwall bottom by the directive wheel 3 that is arranged on enclosed protecting crust 1 inwall and sliding guide 6 motion contact surfaces.
Organize 7 two ends at the austenite shape memory alloy silk and respectively be provided with one group of signal output part 11 and current input terminal 12, the austenite shape memory alloy silk is organized 7 two ends and is fixed on the connecting bolt 6 by fastening bolt 5; The signal output part 2 and the current input terminal 3 of described marmem sensing element 1 both sides all are connected on the transducer wire 8.
Described austenite shape memory alloy silk group 7 is a super-elastic shape memory alloy, can be arranged to one or more groups between slide block 9.
The characteristics of earthquake resistant control in design process, have been taken into full account: at first, the displacement that works produces because of dynamic response during seismic loading or be deformed into the millimeter level, therefore in order to improve marmem absorbs the energy of earthquake input structure in the hyperelastic deformation process takes place efficient, designed gear driven type displacement amplification mechanism; Compare with traditional lever displacement amplification mechanism, the gear driven type displacement amplification mechanism in this programme, its transmission efficiency is higher, and its durability and better stable.Secondly, consider that shape memory alloy wire material resistance to compression stability and flexing resistance are relatively poor, the characteristics that pull resistance is good apply pre-tensile stress to shape-memory alloy wire, make it bear pulling force; The 3rd, the displacement that works produces under load action or be deformed into millimeter level, so marmem is in the good linear corresponding relation that embodies between resistance change rate and the strain under the big strained situation displacement and the distortion situation of reflect structure or member more accurately; The 4th, the stable service behaviour that the shape memory alloy displacement sensor embodies in reciprocal deformation process not only for structure the distortion under the dead load effect monitor, and be applicable to that well the reciprocal distortion and the displacement that produce because of structure or member under the dynamic load functions such as wind or earthquake monitor constantly; The 5th, owing to this device will be integrated in the building structure, be threaded so the operating bar at damper two ends and connecting rod be made into.This device has taken into full account the characteristics of the good characteristic and the building structure aseismatic of shape memory alloy material, has broad application prospects.
The utility model is applicable to the earthquake resistant control of building structure, and this is installed reasonably build-in privileged site in structure, as deformation sensitive position in the structure, can play the effect of structural seismic response Passive Control.When structure is subjected to geological process, the sliding guide 6 that distortion that causes or displacement will promote or spur damper moves reciprocatingly, sliding guide 6 makes the shape-memory alloy wire of build-in in damper produce the unloading motion that stretches by the displacement amplification mechanism, thereby bring into play its superelastic properties and reach the energy that consumes earthquake input in the structure, reduce the dynamic response that works produces in earthquake.Simultaneously its self-sensing function can provide the distortion that structure is produced and the effect of monitoring constantly of displacement under quiet/dynamic load effect.
Claims (3)
1. shape memory alloys self-sensing damper, comprise enclosed protecting crust (1), travelling gear (2), directive wheel (3), slide block (9), turnbuckle (5), sliding guide (6), austenite shape memory alloy silk (7) and connecting rod (10), it is characterized in that: evenly be provided with directive wheel (3) in enclosed protecting crust (1) inwall top, slide block (9) top contacts with directive wheel (3) and makes slide block (9) radially to move back and forth, austenite shape memory alloy silk group (7) one ends are connected with insulated connecting piece (4) one ends that embed slide block (9) two ends, austenite shape memory alloy silk group (7) other end is fixed on enclosed protecting crust (1) two ends by turnbuckle (5), slide block (9) below links to each other with travelling gear (2) one ends, travelling gear (2) other end links to each other with sliding guide (6) top, and sliding guide (6) radially moves back and forth in enclosed protecting crust (1) inwall bottom by the directive wheel (3) that is arranged on enclosed protecting crust (1) inwall and sliding guide (6) motion contact surface.
2. shape memory alloys self-sensing damper as claimed in claim 1, it is characterized in that: respectively be provided with one group of signal output part (11) and current input terminal (12) at austenite shape memory alloy silk group (7) two ends, austenite shape memory alloy silk group (7) two ends are fixed on the connecting bolt (6) by fastening bolt (5); The signal output part (2) and the current input terminal (3) of described marmem sensing element (1) both sides all are connected on the transducer wire (8).
3. shape memory alloys self-sensing damper as claimed in claim 1 is characterized in that: described austenite shape memory alloy silk group (7) is a super-elastic shape memory alloy, can be arranged to one or more groups between slide block (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202568416U CN201785888U (en) | 2010-07-13 | 2010-07-13 | Shape memory alloy self-sensing damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202568416U CN201785888U (en) | 2010-07-13 | 2010-07-13 | Shape memory alloy self-sensing damper |
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| Publication Number | Publication Date |
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| CN201785888U true CN201785888U (en) | 2011-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010202568416U Expired - Fee Related CN201785888U (en) | 2010-07-13 | 2010-07-13 | Shape memory alloy self-sensing damper |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015552A (en) * | 2011-09-22 | 2013-04-03 | 同济大学 | Shock and breakage preventive deformation recording type buckling restrained brace and manufacturing method thereof |
| CN104499597B (en) * | 2014-12-31 | 2016-08-17 | 长安大学 | A kind of viscous damper input rate of displacement accelerator |
| CN107217899A (en) * | 2017-06-26 | 2017-09-29 | 大连理工大学 | A kind of Self-resetting displacement enlargement type marmem damper |
| CN114878380A (en) * | 2022-06-17 | 2022-08-09 | 吉林大学 | SMA wire shape memory effect and super-elastic characteristic multi-station horizontal testing device |
-
2010
- 2010-07-13 CN CN2010202568416U patent/CN201785888U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103015552A (en) * | 2011-09-22 | 2013-04-03 | 同济大学 | Shock and breakage preventive deformation recording type buckling restrained brace and manufacturing method thereof |
| CN104499597B (en) * | 2014-12-31 | 2016-08-17 | 长安大学 | A kind of viscous damper input rate of displacement accelerator |
| CN107217899A (en) * | 2017-06-26 | 2017-09-29 | 大连理工大学 | A kind of Self-resetting displacement enlargement type marmem damper |
| CN114878380A (en) * | 2022-06-17 | 2022-08-09 | 吉林大学 | SMA wire shape memory effect and super-elastic characteristic multi-station horizontal testing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20120713 |