CN210713320U - Cylindrical pulling-pressing-twisting type shape memory alloy damper - Google Patents
Cylindrical pulling-pressing-twisting type shape memory alloy damper Download PDFInfo
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- CN210713320U CN210713320U CN201921176783.3U CN201921176783U CN210713320U CN 210713320 U CN210713320 U CN 210713320U CN 201921176783 U CN201921176783 U CN 201921176783U CN 210713320 U CN210713320 U CN 210713320U
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Abstract
The utility model belongs to the technical field of structure passive control, concretely relates to tube-shape is drawn and is pressed wrench-type shape memory alloy attenuator, including outer barrel, inner cylinder and barrel lid, the barrel lid is fixed in outer barrel one end through set screw, the inner cylinder is character cut in bas-relief, and the stabilizer bar has been inserted to the inner cylinder depressed part, stabilizer bar one end stretches out outer barrel, and the inner cylinder plane portion outside is fixed with the actuating rod, actuating rod one end stretches out the barrel lid, and the stabilizer bar overlaps respectively on actuating rod and the actuating rod and is equipped with first spring and second spring; a plurality of groups of shape memory alloy tows are arranged between the outer barrel and the inner barrel, a plurality of anchor heads are fixed on the outer side of the outer barrel, screw hooks corresponding to the anchor heads are fixed on the outer side of the inner barrel, and each group of shape memory alloy tows are fixed on the anchor heads after passing through the screw hooks and the outer barrel. The utility model discloses shape memory alloy can realize drawing the pressure and turn round the power consumption, and application scope is wide, and simple structure, and be convenient for processing, installation and dismantlement.
Description
Technical Field
The utility model belongs to the technical field of engineering structure passive control, concretely relates to type shape memory alloy attenuator is turned round in tube-shape pulling and pressing.
Background
The damping characteristic and the resistance characteristic of the shape memory alloy change along with the deformation or the temperature change of the material, so the shape memory alloy which is in a martensite state at normal temperature is often compounded with other materials in the field of civil engineering, and the shape memory alloy becomes a vibration-proof material and an energy-consuming material with high damping characteristic, thereby achieving the purposes of vibration reduction and noise reduction. In addition, the shape memory alloy in an austenite state at normal temperature can be made into a high-damping damper, and the characteristics of variable damping and variable rigidity of the damper under the action of load are utilized to absorb and dissipate seismic energy so as to perform passive damping control on an engineering structure. Or the shape memory alloy which is in a martensite state at normal temperature is adhered to the surface of a part which is easy to generate cracks or stress concentration in the component, the characteristics that the resistance of the shape memory alloy material is sensitive to the strain change and the change rule of the shape memory alloy material is in a linear relation are utilized, and the microprocessor is utilized to automatically monitor and early warn the damage condition and the size of the cracks of the structure or the component, so that the intelligent research and application of the civil engineering structure with multiple functions of health self-diagnosis, self-enhancement and the like are realized.
In the aspect of shape memory alloy passive dampers, scholars at home and abroad design dampers in various forms, but most dampers are pull-press type dampers, and the research on pull-press torsion type dampers is less.
Disclosure of Invention
An object of the utility model is to solve the problem that current attenuator structure can not torsional loss, provide a tube-shape and draw pressure wrench type shape memory alloy attenuator, it not only can realize drawing and pressing two-way energy consumption that is drawn, shape memory alloy silk still can draw the energy consumption when the pivoted, has the reset function simultaneously.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a cylindrical pull-press-torsion type shape memory alloy damper comprises an outer cylinder body, an inner cylinder body and a cylinder body cover, wherein the cylinder body cover is fixed at one end of the outer cylinder body through a fixing screw, the inner cylinder body is in a concave shape, a stabilizing rod is inserted into a concave part of the inner cylinder body, one end of the stabilizing rod extends out of the outer cylinder body, an actuating rod is fixed on the outer side of a plane part of the inner cylinder body, one end of the actuating rod extends out of the cylinder body cover, and a first spring and a second spring are respectively sleeved on the stabilizing rod and the actuating rod; a plurality of groups of shape memory alloy tows are arranged between the outer barrel and the inner barrel, a plurality of anchor heads are fixed on the outer side of the outer barrel, screw hooks corresponding to the anchor heads are fixed on the outer side of the inner barrel, and each group of shape memory alloy tows are fixed on the anchor heads after passing through the screw hooks and the outer barrel.
Further, the shape memory alloy wire bundle is a shape memory alloy stranded wire made of NiTi memory alloy.
Furthermore, the stabilizer bar and the actuating rod are in clearance fit with the outer cylinder.
Further, clearance fit is between stabilizer bar and the inner cylinder depressed part.
Further, the first spring and the second spring are SMA springs.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model arranges a plurality of groups of shape memory alloy tows on the outer cylinder and the inner cylinder along the circumference to form a flexible floating system, when the vibration occurs, the shape memory alloy tows always draw energy no matter the inner cylinder moves leftwards or rightwards; when the damper is subjected to torsion, the inner cylinder rotates, the shape memory alloy bundle is still pulled to consume energy, when the stabilizer bar slides towards the inner cylinder and the actuating rod slides towards the cylinder cover, the first spring and the second spring can be squeezed to lose energy, and when the stabilizer bar and the actuating rod are twisted, the stabilizer bar and the actuating rod can automatically reset. The utility model discloses not only can realize two-way energy consumption that is drawn, can also realize twisting reverse, the extrusion power consumption, application scope is wide, and simple structure, processing, installation and dismantlement of being convenient for.
Drawings
Fig. 1 is a schematic structural view of the cylindrical pull-press torsion-type shape memory alloy damper of the present invention.
Fig. 2 is a sectional view taken along a line a-a in fig. 1 of a cylindrical pull-press torsion-type shape memory alloy damper according to the present invention.
In the drawings, the reference numbers: the device comprises an outer cylinder 1, a first spring 2, a shape memory alloy wire bundle 3, a screw hook 4, an anchor head 5, an inner cylinder 6, a second spring 7, a cylinder cover 8, an actuating rod 9, a fixing screw 10 and a stabilizer bar 11.
Detailed Description
The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1-2, a cylindrical pull-press-torsion type shape memory alloy damper comprises an outer cylinder 1, an inner cylinder 6 and a cylinder cover 8, wherein the cylinder cover 8 is fixed at one end of the outer cylinder 1 through a fixing screw 10, the inner cylinder 6 is in a concave shape, a stabilizer bar 11 is inserted into a concave part of the inner cylinder 6, one end of the stabilizer bar 11 extends out of the outer cylinder 1, an actuating rod 9 is fixed at the outer side of a plane part of the inner cylinder 6, one end of the actuating rod 9 extends out of the cylinder cover 8, and a first spring 2 and a second spring 7 are respectively sleeved on the stabilizer bar 11 and the actuating rod 9; a plurality of groups of shape memory alloy tows 3 are arranged between the outer barrel body 1 and the inner barrel body 6, a plurality of anchor heads 5 are fixed on the outer side of the outer barrel body 1, screw hooks 4 corresponding to the anchor heads 5 are fixed on the outer side of the inner barrel body 6, and each group of shape memory alloy tows 3 are fixed on the anchor heads 5 after passing through the screw hooks 4 and the outer barrel body 1.
In an embodiment, the stabilizer bar 11 is cylindrical, the stabilizer bar 11 is in clearance fit with the concave portion of the inner cylinder 6 and the outer cylinder 1, and can slide and rotate freely between the outer cylinder 1 and the inner cylinder 6, and the stabilizer bar 11 extending out of the outer cylinder 1 is connected with an external structural member. The actuating rod 9 is in clearance fit with the outer cylinder body 1 and can slide left and right and rotate freely. The first spring 2 and the second spring 7 are SMA springs, when the stabilizer bar 11 slides towards the inner cylinder 6 and the actuating rod 9 slides towards the cylinder cover 8, the first spring 2 and the second spring 7 can be squeezed to lose, and when the stabilizer bar 11 and the actuating rod 9 are twisted, the stabilizer bar 11 and the actuating rod 9 can automatically reset.
In an embodiment, the anchor head 5 is composed of a screw and an anchor body, which are extruded with each other to form an extruded anchoring device for fixing the shape memory alloy wire bundle 3, and the anchor head 5 is fixed on the outer side of the outer cylinder 1. The screw end of the screw hook 4 is fixed with the outer side of the inner cylinder 6, the end with the hook of the screw hook 4 is used for the shape memory alloy wire bundle 3 to pass through, and the shape memory alloy wire 3 is a shape memory alloy stranded wire made of NiTi memory alloy, and the number of the shape memory alloy stranded wires can be arranged according to the requirement.
The utility model arranges a plurality of groups of shape memory alloy tows 3 on the outer cylinder 1 and the inner cylinder 6 along the circumference to form a flexible floating system, when the vibration occurs, the inner cylinder 6 always draws and consumes energy no matter moves leftwards or rightwards; when the damper is subjected to torsion, the inner cylinder 6 rotates, the shape memory alloy bundle 3 still consumes energy in a tension mode, when the stabilizing rod 11 slides towards the inner cylinder 6 and the actuating rod 9 slides towards the cylinder cover 8 side, the first spring 2 and the second spring 7 can consume energy in an extrusion mode, and when the stabilizing rod 11 and the actuating rod 9 are twisted, the stabilizing rod 11 and the actuating rod 9 can automatically reset. The utility model discloses not only can realize two-way energy consumption that is drawn, can also realize twisting reverse, the extrusion power consumption, application scope is wide, and simple structure, processing, installation and dismantlement of being convenient for.
The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and it is obvious to those skilled in the art that other embodiments can be easily made by replacement or change according to the technical content disclosed in the present specification, and therefore, all changes and modifications made in the principle of the present invention should be included in the claims of the present invention.
Claims (5)
1. A cylindrical pull-press-torsion type shape memory alloy damper comprises an outer cylinder body (1), an inner cylinder body (6) and a cylinder cover (8), and is characterized in that the cylinder cover (8) is fixed at one end of the outer cylinder body (1) through a fixing screw (10), the inner cylinder body (6) is in a concave shape, a stabilizer bar (11) is inserted into a concave part of the inner cylinder body (6), one end of the stabilizer bar (11) extends out of the outer cylinder body (1), an actuating rod (9) is fixed on the outer side of a plane part of the inner cylinder body (6), one end of the actuating rod (9) extends out of the cylinder cover (8), and a first spring (2) and a second spring (7) are respectively sleeved on the stabilizer bar (11) and the actuating rod (9); the shape memory alloy wire bundle fixing device is characterized in that a plurality of groups of shape memory alloy wire bundles (3) are arranged between the outer barrel (1) and the inner barrel (6), a plurality of anchor heads (5) are fixed on the outer side of the outer barrel (1), screw hooks (4) corresponding to the anchor heads (5) are fixed on the outer side of the inner barrel (6), and each group of shape memory alloy wire bundles (3) penetrate through the screw hooks (4) and are fixed on the anchor heads (5) after the outer barrel (1) is arranged.
2. The cylindrical tension-compression-torsion type shape memory alloy damper according to claim 1, wherein the shape memory alloy wire bundle (3) is a shape memory alloy stranded wire made of NiTi memory alloy.
3. A barrel-shaped pull-and-press-and-twist shape memory alloy damper, according to claim 1, characterized in that the stabilizer bar (11) and the actuator bar (9) are in clearance fit with the outer cylinder (1).
4. A cylindrical pull-and-press-and-twist shape memory alloy damper, according to claim 1, characterized in that the stabilizer bar (11) is in clearance fit with the recessed portion of the inner cylinder (6).
5. A cylindrical pull-press-twist shape memory alloy damper according to claim 1, characterized in that the first spring (2) and the second spring (7) are SMA springs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176783.3U CN210713320U (en) | 2019-07-25 | 2019-07-25 | Cylindrical pulling-pressing-twisting type shape memory alloy damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921176783.3U CN210713320U (en) | 2019-07-25 | 2019-07-25 | Cylindrical pulling-pressing-twisting type shape memory alloy damper |
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| Publication Number | Publication Date |
|---|---|
| CN210713320U true CN210713320U (en) | 2020-06-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921176783.3U Expired - Fee Related CN210713320U (en) | 2019-07-25 | 2019-07-25 | Cylindrical pulling-pressing-twisting type shape memory alloy damper |
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| Country | Link |
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| CN (1) | CN210713320U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910789A (en) * | 2020-07-09 | 2020-11-10 | 同济大学 | Multi-dimensional shock isolation support based on vertical variable stiffness and horizontal self-resetting |
| CN113882544A (en) * | 2021-10-19 | 2022-01-04 | 湖北文理学院 | Space multidirectional viscoelastic-shape memory alloy damping system |
-
2019
- 2019-07-25 CN CN201921176783.3U patent/CN210713320U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111910789A (en) * | 2020-07-09 | 2020-11-10 | 同济大学 | Multi-dimensional shock isolation support based on vertical variable stiffness and horizontal self-resetting |
| CN111910789B (en) * | 2020-07-09 | 2021-10-08 | 同济大学 | Multi-dimensional shock isolation support based on vertical variable stiffness and horizontal self-resetting |
| CN113882544A (en) * | 2021-10-19 | 2022-01-04 | 湖北文理学院 | Space multidirectional viscoelastic-shape memory alloy damping system |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200609 Termination date: 20210725 |