CN101435483A - High temperature resistant shape memory alloy wire fastening device - Google Patents
High temperature resistant shape memory alloy wire fastening device Download PDFInfo
- Publication number
- CN101435483A CN101435483A CNA2007101771571A CN200710177157A CN101435483A CN 101435483 A CN101435483 A CN 101435483A CN A2007101771571 A CNA2007101771571 A CN A2007101771571A CN 200710177157 A CN200710177157 A CN 200710177157A CN 101435483 A CN101435483 A CN 101435483A
- Authority
- CN
- China
- Prior art keywords
- memory alloy
- alloy wire
- shape
- sleeve pipe
- bearing
- Prior art date
- 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.)
- Pending
Links
Images
Landscapes
- Connection Of Plates (AREA)
Abstract
The invention provides a high-temperature resistant fastening device for shape memory alloy (SMA) wires. A SMA wire passes through a metal casing; the metal casing is flattened by use of a hydraulic press; the flattened metal casing tightly clamps the SMA wire; the SMA wire with the metal casing passes through a ceramic support with a small hole; the diameter of the small hole is slightly larger than that of the SMA wire and is far smaller than the maximum width of the flattened metal casing; and finally the ceramic support is fixed on an actuator driven through the SMA wire so as to be used as the fastening device for the SMA wire. The device has the advantages of high-temperature resistance, good insulation property, great bearing capacity, simple and reliable structure, light weight and outstanding superiority as compared with devices realizing the same functions.
Description
Technical field
The present invention relates to a kind of with the fastening means of marmem (SMA) silk as shape-memory alloy wire on the device driven.
Background technique
With regard to application of the present invention, is to utilize " shape memory characteristic " of SMA silk to come work with marmem (SMA) silk as device driven, " shape memory characteristics " is meant: the material distortion that is stretched under a certain lower temperature, unloading its distortion of back can not be replied fully and be left residual deformation.But as long as it is heated on certain higher temperature, then residual deformation disappears, and is returned to the original shape that is not stretched, and shows as " shape under the memory lower temperature ", and produces very big restoring force in the Recovery Process.
With marmem (SMA) silk as device driven in, the SMA silk will be fastened on the device, so that generation restoring force, this can carry out fastening to silk with regard to needs are a kind of, and the high temperature that produces when wanting to stand the energising of SMA silk, also want device, the scheme insulate, fastening with realization SMA silk.Fig. 1 a and 1b have shown the fastening scheme of two kinds of prior aries, wherein, (Fig. 1 a) for first kind of scheme, SMA wire fastening device 3 is fixed on on the SMA silk device driven, the indicate object that spurred by the SMA silk of label 2 expression SMA silks, label 1 is generally voussoir (SMA silk can on a pulley that is fixed on the voussoir), pin, pressurized strut etc.; For second kind of scheme, adopted two SMA wire fastening devices 3, one of them SMA wire fastening device 3 is fixed on on the SMA silk device driven, on another SMA wire fastening device 3 fixing objects that need be pulled, is generally voussoir, pin, pressurized strut etc.
Prior art mainly adopts bolt to compress the next fastening SMA silk of mode, and No. 200610011632.3 " described in the mini-sized low-load SMA space in-phase unlocking mechanism (on April 10th, 2006 submitted), its structure as shown in Figure 2 as Chinese patent application.Among Fig. 2, SMA silk 2 is clamped, by Cock screw 6 upper fixing element 5 and following fixed block 4 are compressed again, make SMA silk 2 quilts being clipped in the middle of two fixed blocks tightly, thereby reach fastening purpose by upper fixing element 5 and following fixed block 4.There are the following problems for the prior art fastening means:
The upper fixing element 5 of-this fastening means and the material of following fixed block 4 all are teflon, and this material resistance to high temperature is relatively poor, just can deliquescing under continuous high temperature (about 200-300 degree centigrade), and cause the generation of SMA silk to be become flexible.The material of upper fixing element 5 and following fixed block 4 also can be selected pottery for use, but upper fixing element 5 directly compresses by Cock screw 6, be easy to crushed, the reliability extreme difference.Therefore, this fastening means can not stand continuous high temperature, and resistance to high temperature is relatively poor.
Fastening inefficacy will take place in-this fastening means behind the experience continuous high temperature, reliability in actual use is poor.
-this fastening means is made up of SMA silk 2, following fixed block 4, upper fixing element 5 and 6 four parts of Cock screw, and wherein, the size of upper fixing element 5 and following fixed block 4 is less, and the structure more complicated, is not easy to processing.
Summary of the invention
According to an invention of the present invention, a kind of shape memory alloy wire fastening device is provided, it is characterized in that comprising:
One section shape-memory alloy wire,
Be enclosed within the sleeve pipe on the end of described shape-memory alloy wire, thereby this sleeve pipe is flattened by hydraulic press and has clamped described shape-memory alloy wire,
A bearing, this bearing has at least one hole, and the diameter in described hole is greater than the diameter of described shape-memory alloy wire but less than the cross section dimension of the described sleeve pipe after being crushed, described shape-memory alloy wire passes described hole.
According to a further scheme of the present invention, above-mentioned shape memory alloy wire fastening device further comprises: one second bearing, a hole is arranged on this second bearing, and described shape-memory alloy wire passes the described hole on described second bearing; And, be enclosed within one second sleeve pipe on the other end of described shape-memory alloy wire, thereby this sleeve pipe is flattened by hydraulic press and has clamped described shape-memory alloy wire.
According to another invention of the present invention, a kind of method of solid shape memory alloy wire is provided, comprising: the end of a casing pipe sleeve at described shape-memory alloy wire; Thereby press described sleeve pipe to make described sleeve pipe clamp described shape-memory alloy wire with hydraulic press; And, make described shape-memory alloy wire pass a hole on the bearing, the diameter in described hole is greater than the diameter of described shape-memory alloy wire but less than the cross section dimension of the described sleeve pipe after being crushed.
Description of drawings
Fig. 1 a and 1b are the schematic representation of the securing means of prior art.
Fig. 2 is the schematic representation of the securing means of another kind of prior art.
Fig. 3 a, 3b, 3c are the embodiment's of high temperature resistant SMA wire fastening device of the present invention schematic representation.
Fig. 4 is an explanation schematic representation of using the situation of hydraulic press gland pipe in the solution of the present invention.
Fig. 5 is the schematic representation of the situation of sleeve pipe that has been crushed in one embodiment of the invention and the SMA silk that is clamped thereof.
Embodiment
The present invention is further described below in conjunction with drawings and Examples.
For the existing deficiency of the securing means that overcomes prior art, the invention provides a kind of high temperature resistant SMA wire fastening device.Fig. 3 a-3b has shown a kind of embodiment's of this device structure.A kind of scheme of this embodiment of the present invention has adopted the material of pottery as bearing 8, and ability is high-temperature and have good insulation performance very; In addition, the present invention is by being enclosed within metal sleeve 7 (as copper pipe, steel pipe etc.) on the SMA silk, with hydraulic press sleeve pipe is flattened again, up between sleeve pipe 7 and the SMA silk 2 without any the gap till, at this moment the sleeve pipe 7 that has flattened is tightly clamped SMA silk 2, makes SMA silk-sleeve pipe connect and can bear very big load.
Shown in Fig. 3 a-3b is a kind of embodiment of the present invention, under this mode of execution, 2 holes 12 is arranged on the bearing, is used for fixing respectively the two ends of a SMA silk 2; In use, a kind of common situation is: bearing 8 is fixed on one of two part (not shown)s that can move mutually, two ends are fixed on SMA silk on the bearing and then are enclosed within these two parts that can move mutually another (for example, be enclosed on the pulley and pulley be installed on this another part).
The present invention also can adopt the mode of execution different with the mode of execution shown in Fig. 3.For example, can adopt two bearings, each bearing respectively has a hole, and the diameter in hole is less than the dimension of the sleeve pipe 7 that has been crushed.An end that metal sleeve 7 is enclosed within SMA silk 2 also flattens, and the hole of the other end of SMA silk being passed successively two bearings puts another metal sleeve 7 afterwards more also with these another metal sleeve 7 flattenings.In the use these two bearings are separately fixed on two parts that can move mutually.
The solution of the present invention can realize by following measure: as shown in Figure 4, metal sleeve 10 (as copper pipe, steel pipe etc.) is enclosed within on the SMA silk 2, be put into then between hydraulic press seaming chuck 9 and the push-down head 11, with hydraulic press metal sleeve 10 is exerted pressure, metal sleeve 10 is flattened, make between metal sleeve 7 after the flattening and the SMA silk 2 not have the gap, the metal sleeve 7 after the flattening as shown in Figure 5.The hole 12 that the SMA silk that metal sleeve 7 after will being crushed again clamps passes on the ceramic support 8 among Fig. 3 get final product, and the slightly larger in diameter in hole 12 is in the diameter of SMA silk 2, but less than the diameter of the metal sleeve 7 after the flattening.
As a concrete example, for diameter is the SMA silk of 0.8mm, can adopt external diameter is 3mm, internal diameter is the copper sleeve of 1.2mm, the impacting force of hydraulic press is 10KN, the aperture that is used to wear SMA silk 2 on the ceramic support 8 is 1.0mm, much smaller than the diameter that flattens back metal sleeve 7, but and is slightly larger than SMA silk 2 diameters.
As another object lesson, for diameter is the SMA silk of 1.0mm, can adopt external diameter is 3.5mm, internal diameter is the copper sleeve of 1.5mm, the impacting force of hydraulic press is 12KN, the aperture that is used to wear SMA silk 2 on the ceramic support 8 is 1.2mm, much smaller than the diameter that flattens back metal sleeve 7, but and is slightly larger than SMA silk 2 diameters.
As another object lesson, for diameter is the SMA silk of 0.8mm, can adopt external diameter is 3mm, internal diameter is the Steel Sleeve of 1.2mm, the impacting force of hydraulic press is 18KN, the aperture that is used to wear SMA silk 2 on the ceramic support 8 is 1.0mm, much smaller than the diameter that flattens back metal sleeve 7, but and is slightly larger than SMA silk 2 diameters.
The solution of the present invention has that high temperature resistant, bearing load is big, an advantage of good insulating, reliability height, light weight compared with prior art, specifies as follows in conjunction with Fig. 3 a-3c:
(1) the present invention adopts stupalith to do bearing 8, even make and also can not impact structural strength under very high temperature, but also has good insulating property.
(2) as Fig. 4, shown in 5, the present invention adopts metal sleeve 10 to entangle SMA silk 2, be depressed between SMA silk 2 and the metal sleeve 10 with hydraulic press again and do not have the gap, metal sleeve 7 after the flattening is tightly clamped till the SMA silk 2, even make like this and on the SMA silk, apply very big pulling force, can not become flexible between sleeve pipe 7 and the SMA silk 2 yet, for the example of introducing in the technique scheme, experiment records between the pulling force casing running 7 of 200 degrees centigrade and 600N and SMA silk 2 does not become flexible yet, and the securing means in No. the 200610011632.3rd, the Chinese patent application just can become flexible slippage when applying 150N in room temperature environment, and it is littler to can bear value of thrust under 200 degrees centigrade of environment.
(3) the present invention is simple in structure, minimumly can only have 3 parts to comprise SMA silk, sleeve pipe, bearing), and connect all simple and reliablely between each part, therefore have very high reliability.
(4) having only metal sleeve 10 among the present invention is the bigger metals of density, but its volume is very little, and the bigger bearing 8 of volume is stupaliths, and density is less than half of steel, and therefore, the present invention has less weight, is applicable to aerospace equipment.
The drawing reference numeral explanation:
1: make animal body 2:SMA silk 3: fastener
4: lower fixture 5: upper fixing element 6: holding screw
8: ceramic support 7: the metal sleeve of flattening
9: seaming chuck 10: metal sleeve 11: push-down head
12: the hole
Claims (8)
1. shape memory alloy wire fastening device is characterized in that comprising:
One section shape-memory alloy wire,
Be enclosed within the sleeve pipe on the end of described shape-memory alloy wire, thereby this sleeve pipe is crushed and has clamped described shape-memory alloy wire,
A bearing, this bearing has at least one hole, and the diameter in described hole is greater than the diameter of described shape-memory alloy wire but less than the cross section dimension of the described sleeve pipe after being crushed, described shape-memory alloy wire passes described hole.
2. shape memory alloy wire fastening device as claimed in claim 1, also has one second hole on the wherein said bearing, described shape-memory alloy wire passes described second hole, and securing means also comprises one second sleeve pipe on the other end that is enclosed within described shape-memory alloy wire, thereby this second sleeve pipe is crushed and has clamped described shape-memory alloy wire.
3. shape memory alloy wire fastening device as claimed in claim 1 further comprises
One second bearing has a hole on this second bearing, described shape-memory alloy wire passes the described hole on described second bearing; And
Be enclosed within one second sleeve pipe on the other end of described shape-memory alloy wire, thereby this sleeve pipe is crushed and has clamped described shape-memory alloy wire.
4. as described shape memory alloy wire fastening device how among the claim 1-3, wherein said sleeve pipe is a metal sleeve, and described bearing is made with insulating ceramic materials.
5. a kind of method of solid shape memory alloy wire comprises:
The end of a casing pipe sleeve at described shape-memory alloy wire;
Thereby flattening described sleeve pipe makes described sleeve pipe clamp described shape-memory alloy wire; And
Make described shape-memory alloy wire pass a hole on the bearing, the diameter in described hole is greater than the diameter of described shape-memory alloy wire but less than the cross section dimension of the described sleeve pipe after being crushed.
6. method as claimed in claim 5 further comprises:
Make described shape-memory alloy wire pass one second hole on the described bearing,
One second casing pipe sleeve on the other end of described shape-memory alloy wire, and
Thereby flattening described second sleeve pipe makes described second sleeve pipe clamp described shape-memory alloy wire.
7. method as claimed in claim 5 further comprises
Make described shape-memory alloy wire pass a hole on one second bearing,
One second casing pipe sleeve on the other end of described shape-memory alloy wire, and
Thereby flattening described second sleeve pipe makes described second sleeve pipe clamp described shape-memory alloy wire.
8. as described method how among the claim 5-7, wherein said sleeve pipe is a metal sleeve, and described bearing is made with insulating ceramic materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101771571A CN101435483A (en) | 2007-11-12 | 2007-11-12 | High temperature resistant shape memory alloy wire fastening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101771571A CN101435483A (en) | 2007-11-12 | 2007-11-12 | High temperature resistant shape memory alloy wire fastening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101435483A true CN101435483A (en) | 2009-05-20 |
Family
ID=40710063
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101771571A Pending CN101435483A (en) | 2007-11-12 | 2007-11-12 | High temperature resistant shape memory alloy wire fastening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101435483A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115023562A (en) * | 2020-03-09 | 2022-09-06 | 迪维达格系统国际有限公司 | Cable bend limiting assembly and combination of cable bend limiting assembly with cable, anchor, compression clamp unit and grooved tube |
| CN115023562B (en) * | 2020-03-09 | 2024-05-24 | 迪维达格系统国际有限公司 | Cable bending limiting assembly and combination of cable bending limiting assembly with cable, anchor, compression clamping unit and groove tube |
-
2007
- 2007-11-12 CN CNA2007101771571A patent/CN101435483A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115023562A (en) * | 2020-03-09 | 2022-09-06 | 迪维达格系统国际有限公司 | Cable bend limiting assembly and combination of cable bend limiting assembly with cable, anchor, compression clamp unit and grooved tube |
| CN115023562B (en) * | 2020-03-09 | 2024-05-24 | 迪维达格系统国际有限公司 | Cable bending limiting assembly and combination of cable bending limiting assembly with cable, anchor, compression clamping unit and groove tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4083093A (en) | Multiple material solar panel and method and apparatus for manufacturing the same | |
| CN113029756B (en) | Hopkinson torsion bar hydraulic clamping and releasing device | |
| CN201628662U (en) | Bending torsion testing device for composite insulator | |
| CN210938269U (en) | Special numerical control voltage-sharing clamping device | |
| CN101396784B (en) | Three-jaw fluid-pressure connection-rod swelling device for tube end | |
| CN101435483A (en) | High temperature resistant shape memory alloy wire fastening device | |
| CN104234211A (en) | Aluminum alloy connecting piece of building grid structure and processing method of aluminum alloy connecting piece | |
| CN107520275B (en) | The method that a kind of high temperature and pressure thick-wall seamless road squeezes the curved combined shaping of forging | |
| CN214601213U (en) | Nonrust steel pipe machining is with equipment of bending | |
| GB2533335A (en) | Heat transfer in an energy recovery device | |
| CN219796356U (en) | Building construction pipeline fixing mechanism | |
| CN203941060U (en) | A kind of fibre reinforced composites cryomechanics tensile property test frock clamp | |
| CN216757660U (en) | Self-locking clamping device for spring chuck | |
| CN106840900B (en) | Test device and method for researching compression-bending-shearing hysteresis performance of rod piece for structure | |
| CN205157215U (en) | Test device is drawn to anchor structure | |
| CN207494405U (en) | It is flared door-plate clamp system and with its electric tube expander | |
| CN211218487U (en) | Novel stay wire manufacturing device | |
| CN209675823U (en) | A kind of wire clamp of conductor spacer rubber column filling tooling | |
| CN207695558U (en) | Riveter fixture | |
| CN2561988Y (en) | Multiple expansion bolts | |
| CN206573415U (en) | The experimental rig of research structure rod member Subjected To Compression, Bending, Shear Hysteresis Behavior | |
| CN207320344U (en) | C-type thermometric wire clamp | |
| CN101947583B (en) | Core-pulling device on tube bender | |
| CN201656415U (en) | Cable energy-saving connector | |
| CN101656408A (en) | Strain clamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20090520 |