CN101113723A - Shape memory alloy reciprocating type displacement multiply output mechanism - Google Patents
Shape memory alloy reciprocating type displacement multiply output mechanism Download PDFInfo
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- CN101113723A CN101113723A CNA2006100889270A CN200610088927A CN101113723A CN 101113723 A CN101113723 A CN 101113723A CN A2006100889270 A CNA2006100889270 A CN A2006100889270A CN 200610088927 A CN200610088927 A CN 200610088927A CN 101113723 A CN101113723 A CN 101113723A
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Abstract
The invention relates to a reciprocating displacement multiplication output mechanism compromising two ways, reciprocating linear displacement multiplication output and reciprocating circular displacement multiplication output. The displacement amplification purpose is realized by taking advantages of the excellent memory character of shape memory alloy and long recycling service life to output the displacement multiplication of 1-5 percent of the shape memory alloy length. The mechanism takes advantage of temperature change controlling displacement output, is not affected by surrounding environment medium and atmosphere and has the advantages of easy installment, miniaturization in structure available, long recycling service life, good reliability and low cost, etc, and can be broadly used as a driver and an executive complement for displacement output in mechanical, automatic and electronic industries, etc.
Description
Technical field
The present invention relates to a kind of displacement output mechanism, it comprises straight-line displacement output and circumferentially displacement output, and particularly a kind of shape memory effect in temperature changing process that utilizes marmem is realized the straight-line displacement and the circumferential multiply output mechanism of displacement.
Background technique
Marmem is a kind of alloy with memory effect, and shape memory effect is meant that the alloy of certain original shape is out of shape the back at low temperatures by being heated to a kind of property that can return to original shape more than a certain critical temperature.After at low temperatures it being carried out tensile buckling for shape-memory alloy wire, then to its heating, recovery of shape will take place in it, produce restoring force and reply displacement, utilize its restoring force and reply the performance that displacement can externally be done work, can make various driving elements and executive component is used widely in machinery and automatic industrial, for example can make some robots, manipulators etc. are realized control automatically, this mechanism has good reproducibility, the result is simple, and is highly sensitive, the advantage of good reliability.Yet, in temperature changing process, the answer displacement of marmem is 8% to the maximum, but under this maximum recovery strain condition, can only keep several times and will lose efficacy to tens times circulation, usually considering better repeatability and long cycle life, it is replied displacement be made as 1～5%, cycle life can reach 10 like this
5～10
6Inferior, but such answer displacement is very little, for example long memory alloy wire of the 10cm answer displacement that can only produce 1～5mm, so little answer displacement becomes the biggest obstacle of marmem as the extensive use of displacement output mechanism.Therefore, providing a kind of can reach displacement by 1～5% the displacement multiplication output with marmem length of adding up of machinery and amplify the mechanism of output and for machinery and automatic industrial significance is arranged.
Summary of the invention
The purpose of this invention is to provide a kind of shape memory alloy reciprocating type displacement multiply output mechanism, it is by utilizing the superior memory characteristic of marmem and high recycle the life-span 1～5% displacement multiplication output of marmem length is reached the purpose that output is amplified in displacement.
For realizing above purpose, the present invention reaches by the following technical programs:
A kind of shape memory alloy reciprocating type displacement multiply output mechanism is characterized in that: marmem fixing device and gear transmission device by the band elastic device are formed; The marmem fixing device of described band elastic device is connected with described gear transmission device.
A kind of optimal technical scheme is characterized in that: the marmem fixing device of described band elastic device comprises T-shaped pull bar 13, sleeve 15, shape-memory alloy wire 16, spring 17, threaded pull bar 18 and transverse slat 19; Described gear transmission device comprises band transverse tooth thickness plate 14, band tooth movable slide 12 and little spring 11.Band transverse tooth thickness plate 14 inwalls are provided with tooth, and the tooth identical with being with transverse tooth thickness plate 14 arranged on the band tooth movable slide 12.Respectively have two apertures on T-shaped pull bar 13 and the transverse slat 19.4 little springs 11 are placed on respectively in the aperture of T-shaped pull bar 13 and transverse slat 19, and an end of band tooth movable slide 12 links to each other with little spring, and the other end is meshed by tooth with the inwall that has tooth of band transverse tooth thickness plate 14; T-shaped pull bar 13 is connected by spring 17 with threaded pull bar 18; Shape-memory alloy wire 16 two ends link to each other with T-shaped pull bar 13 with transverse slat 19 respectively; Sleeve 15 and threaded pull bar 18 are by being threaded; Have the hole of screw thread in the middle of the transverse slat, threaded pull bar 18 and transverse slat 19 are by being threaded.
It is the linear reciprocating displacement multiply output mechanism.
A kind of optimal technical scheme is characterized in that: the marmem fixing device of described band elastic device comprises shape-memory alloy wire 26; Spring 27; Lower end sheet 28; Upper head plate 25.Described gear transmission device comprises ratchet 21, ratchet 22, ratchet 23 and little spring 24; Described ratchet 22 and ratchet 23 are coupling with upper head plate 25, and the bottom of ratchet 22 and ratchet 23 is connected by little spring 24, and ratchet 21 meshes with the top of ratchet 22 and ratchet 23; Upper head plate 25 is connected by spring 27 with lower end sheet 28; Two shape-memory alloy wire 26 two ends are connected with lower end sheet 28 with upper head plate 25 respectively, and lower end sheet 28 is fixing.
It is circumferential reciprocating type displacement multiply output mechanism.
The preparation process of reciprocating type displacement multiply output mechanism of the present invention is as follows:
(1) design organization
According to actual requirement, the mechanism components of structure size reasonable in design.
(2) selected shape memory alloy material
According to (1) designing requirement, according to the size of mechanism, needed output displacement, select suitable shape memory alloy material by calculating, it is meant that the various performances of marmem meet mechanism's requirement, must carry out pre-stretching to memory alloy in addition, finishes the assembling of mechanism.
(3) realize displacement multiplication output
Marmem is carried out current flow heats, marmem is replied, and means that the length of marmem will shorten, and pulling mechanism output terminal moves output one section, stop heating, marmem is elongated again by the tension of spring, heating once more, and marmem recovers original length, mechanism is returned to original state, so repeatedly, mechanism's output terminal is constantly exported the displacement of equivalent, thereby reaches the purpose of the reciprocating type multiplication output of displacement.
Reciprocating type displacement multiply output mechanism of the present invention has to be installed simply, but implementation structure miniaturization, its action is carried out and not influenced by temperature surrounding medium or atmosphere in addition, it is long to recycle the life-span, good reliability, low cost and other advantages, the driving and the execution components and parts that can be used as displacement output are widely used in mechanical industry, fields such as automatic industrial and electronics industry.
The present invention will be further described below by description of drawings and embodiment, but and do not mean that limiting the scope of the invention.
Description of drawings
Fig. 1 is one of embodiment of the invention: the structural representation of linear reciprocating displacement multiply output mechanism;
Fig. 2 is another embodiment of the present invention: the structural representation of circumferential reciprocating type displacement multiply output mechanism.
Embodiment
Embodiment 1
As shown in Figure 1, be one of embodiment of the invention: the structural representation of linear reciprocating displacement multiply output mechanism.11 is little spring among the figure; 12 are band tooth movable slide; 13 is T-shaped pull bar; 14 are band transverse tooth thickness plate; 15 is sleeve; 16 is the Ti-Ni marmem silk; 17 is spring; 18 is threaded pull bar; 19 is transverse slat.Band transverse tooth thickness plate 14 inwalls are provided with tooth, and the tooth identical with being with transverse tooth thickness plate 14 arranged on the band tooth movable slide 12.Respectively have two apertures on T-shaped pull bar 13 and the transverse slat 19.4 little springs 11 are placed on respectively in the aperture of T-shaped pull bar 13 and transverse slat 19, and an end of band tooth movable slide 12 links to each other with little spring, and the other end is meshed by tooth with the inwall that has tooth of band transverse tooth thickness plate 14; T-shaped pull bar 13 is connected by spring 17 with threaded pull bar 18; Ti-Ni marmem silk 16 two ends are affixed with transverse slat 19 and T-shaped pull bar 13 respectively; Sleeve 15 and threaded pull bar 18 are by being threaded; Have the hole of screw thread in the middle of the transverse slat 19, threaded pull bar 18 and transverse slat 19 are by being threaded.The effect of little spring 11 is: the tooth tight engagement between the feasible band of its tension force tooth movable slide 12 and the band transverse tooth thickness plate 14.By being threaded, rotation turns threaded pull bar 18 and can adjust the amount of deformation of spring 17 and obtain differential tension provides suitable size for the pre-stretching of niti-shaped memorial alloy silk 16 power between threaded pull bar 18 and the transverse slat 19.
The working procedure of linear reciprocating displacement multiply output mechanism of the present invention is as follows:
(1) each parts of design organization, one little spring 11 is set in the aperture of T-shaped pull bar 13 and transverse slat 19, compress the tooth tight engagement of tooth with band transverse tooth thickness plate 14 inwalls of the feasible band of little tension force of little spring 11 outputs tooth movable slide 12, pass through the spring 17 continuous (the big I of k value is determined by the high computational of concrete Ti-Ni marmem silk and tooth) of a suitable k value between T-shaped pull bar 13 and the threaded pull bar 18.
(2) select suitable Ti-Ni marmem silk material, and on material testing machine, it is carried out pre-tension deformation, shape-memory alloy wire 16 two ends and T-shaped pull bar 13 and transverse slat 19 are affixed, sleeve 15 and threaded pull bar 18 are by being threaded, by the initial deformation amount of the adjustment spring that is threaded between threaded pull bar 18 and the transverse slat 19, finish assembling.
(3) Ti-Ni marmem silk 16 is passed through current flow heats, when temperature reaches 16 phase transformations of Ti-Ni marmem silk and finishes temperature, Ti-Ni marmem silk 16 is replied, it is shorten length, to spur T-shaped pull bar 13 like this and be with tooth movable slide 12 to move down a tooth, and threaded pull bar 18 motionless (shape of the tooth between band tooth movable slide 12 and the band transverse tooth thickness plate 14 has determined band tooth movable slide 12 can not upwards slide along the teeth directional lower slider), spring 17 is forced to compression, and decrement is the height of a tooth.Stop shape-memory alloy wire heating, because temperature reduces, at this moment because the tension force effect that spring 17 compressions produce forces threaded pull bar 18 to move down a tooth, T-shaped pull bar 13 is motionless.Finish one-period like this, T-shaped pull bar 13 and threaded pull bar 18 move down a tooth simultaneously.So repetitive heating cooling, T-shaped pull bar 13 and threaded pull bar 18 constantly move downward, reach like this linear reciprocating displacement multiplication export purpose.
Embodiment 2
As shown in Figure 2, be two of the embodiment of the invention, circumferentially the structural representation of reciprocating type displacement multiply output mechanism.21 is ratchet among the figure; 22 is ratchet; 23 is ratchet; 24 is little spring; 25 is the upper-end surface; 26 is the Ti-Ni marmem silk; 27 is spring; 28 is lower end sheet.Ratchet 22 and ratchet 23 are coupling with upper head plate, and the bottom of ratchet 22 and ratchet 23 is connected by little spring 24, and ratchet 21 meshes with the top of ratchet 22 and ratchet 23; Upper head plate 25 is connected by spring 27 with lower end sheet 28; Two shape-memory alloy wire 26 two ends are connected with lower end sheet 28 with upper head plate 25 respectively, and lower end sheet 28 is fixing.
The working procedure of circumferential reciprocating type displacement multiply output mechanism of the present invention is as follows:
(1) each parts of design organization have designed ratchet 21 and two ratchets of suitable ratchet, and two ratchets 22 are connected the suitable power of generation with a little spring 24 and make ratchet 21 and ratchet 22,23 tight engagement with 23.
(2) select suitable Ti-Ni marmem silk material, and it is carried out pre-stretching, the two ends of Ti-Ni marmem silk 26 are fixing with upper head plate 25 and lower end sheet 28 respectively, and fixing lower end sheet 28, finish assembling.
(3) to 26 energisings of Ti-Ni marmem silk, current flow heats, when temperature reaches the Ti-Ni marmem silk and finishes temperature, Ti-Ni marmem silk 26 will be replied, be shorten length, Ti-Ni marmem silk 26 pulling ratchets 22,23 move down the height of half tooth like this, and ratchet 21 will rotate counterclockwise all linear displacement of half tooth, spring 27 is forced to compression, and decrement is the height of half tooth.Stop 26 heating of Ti-Ni marmem silk, because temperature reduces, the tension force effect owing to spring 27 at this moment forces ratchet 21 to rotate counterclockwise all linear displacement of half tooth again.Finish one-period like this, ratchet 22,23 is got back to the origin-location, and ratchet 21 circumferentially rotates counterclockwise the circumferential displacement of a tooth.So repetitive heating cooling, ratchet 21 is motion counterclockwise constantly, reach so circumferential reciprocating type displacement multiply export purpose.
Claims (3)
1. a shape memory alloy reciprocating type displacement multiply output mechanism is characterized in that: be made up of marmem fixing device and the gear transmission device of being with elastic device; The marmem fixing device of described band elastic device is connected with described gear transmission device.
2. shape memory alloy reciprocating type displacement multiply output mechanism according to claim 1 is characterized in that: the marmem fixing device of described band elastic device comprises T-shaped pull bar (13), sleeve (15), shape-memory alloy wire (16), spring (17), threaded pull bar (18) and transverse slat (19); Described gear transmission device comprises band transverse tooth thickness plate (14), band tooth movable slide (12) and little spring (11); Band transverse tooth thickness plate (14) inwall is provided with tooth, has on the band tooth movable slide (12) and the identical tooth of band transverse tooth thickness plate (14); Respectively have two apertures on T-shaped pull bar (13) and the transverse slat (19); 4 little springs (11) are placed on respectively in the aperture of T-shaped pull bar (13) and transverse slat (19), and an end of band tooth movable slide (12) links to each other with little spring, and the other end is meshed by tooth with the inwall that has tooth of band transverse tooth thickness plate (14); T-shaped pull bar (13) is connected by spring (17) with threaded pull bar (18); Shape-memory alloy wire (16) two ends are affixed with transverse slat (19) and T-shaped pull bar (13) respectively; Sleeve (15) and threaded pull bar (18) are by being threaded; Have threaded hole in the middle of the transverse slat, threaded pull bar (18) and transverse slat (19) are by being threaded.
3. shape memory alloy reciprocating type displacement multiply output mechanism according to claim 1, it is characterized in that: the marmem fixing device of described band elastic device comprises shape-memory alloy wire (26), spring (27), upper head plate (25), lower end sheet (28); Described gear transmission device comprises ratchet (21), ratchet (22), ratchet (23) and little spring (24); Described ratchet (22) and ratchet (23) are coupling with upper head plate (25), and the bottom of ratchet (22) and ratchet (23) is connected by little spring (24), and ratchet (21) meshes with the top of ratchet (22) and ratchet (23); Upper head plate (25) is connected by spring (27) with lower end sheet (28); Two shape-memory alloy wires (26) two ends are connected with lower end sheet (28) with upper head plate (25) respectively, and lower end sheet (28) is fixing.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100889270A CN100478565C (en) | 2006-07-26 | 2006-07-26 | Shape memory alloy reciprocating type displacement multiply output mechanism |
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| CNB2006100889270A CN100478565C (en) | 2006-07-26 | 2006-07-26 | Shape memory alloy reciprocating type displacement multiply output mechanism |
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| CN100478565C CN100478565C (en) | 2009-04-15 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102072125A (en) * | 2011-01-19 | 2011-05-25 | 南京航空航天大学 | One-way shape memory effect-based two-way linear driver and method thereof |
| CN101666299B (en) * | 2008-09-01 | 2011-06-22 | 北京有色金属研究总院 | Shape memory alloy displacement superposition driving mechanism |
| CN102848885A (en) * | 2011-06-30 | 2013-01-02 | 通用汽车环球科技运作有限责任公司 | Shape memory alloy actuator with double ended force multiplication |
| CN113916184A (en) * | 2021-10-25 | 2022-01-11 | 中国电建集团成都勘测设计研究院有限公司 | Improved multipoint displacement meter sensor connecting device and connecting method thereof |
-
2006
- 2006-07-26 CN CNB2006100889270A patent/CN100478565C/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101666299B (en) * | 2008-09-01 | 2011-06-22 | 北京有色金属研究总院 | Shape memory alloy displacement superposition driving mechanism |
| CN102072125A (en) * | 2011-01-19 | 2011-05-25 | 南京航空航天大学 | One-way shape memory effect-based two-way linear driver and method thereof |
| CN102072125B (en) * | 2011-01-19 | 2012-11-28 | 南京航空航天大学 | One-way shape memory effect-based two-way linear driver and method thereof |
| CN102848885A (en) * | 2011-06-30 | 2013-01-02 | 通用汽车环球科技运作有限责任公司 | Shape memory alloy actuator with double ended force multiplication |
| CN113916184A (en) * | 2021-10-25 | 2022-01-11 | 中国电建集团成都勘测设计研究院有限公司 | Improved multipoint displacement meter sensor connecting device and connecting method thereof |
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| CN100478565C (en) | 2009-04-15 |
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Effective date of registration: 20190703 Address after: 101407 No. 11 Xingke East Street, Yanqi Economic Development Zone, Huairou District, Beijing Patentee after: Research Institute of engineering and Technology Co., Ltd. Address before: 100088, 2, Xinjie street, Beijing Patentee before: General Research Institute for Nonferrous Metals |