CN204346467U - A kind of fiber-optic grating sensor prestress loading adjusting device - Google Patents
A kind of fiber-optic grating sensor prestress loading adjusting device Download PDFInfo
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- CN204346467U CN204346467U CN201520034925.8U CN201520034925U CN204346467U CN 204346467 U CN204346467 U CN 204346467U CN 201520034925 U CN201520034925 U CN 201520034925U CN 204346467 U CN204346467 U CN 204346467U
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- clamp assemblies
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- truncated cone
- adjusting device
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Abstract
The utility model discloses a kind of fiber-optic grating sensor prestress loading adjusting device, comprise rugged housing, rugged housing is made up of brace and the termination being connected to its two ends, termination has interior large outer little truncated cone-shaped through hole, termination is provided with clamp assemblies, one end of clamp assemblies is truncated cone-shaped structure and the other end is cylindrical structural, the truncated cone-shaped structure end of clamp assemblies is positioned at rugged housing and fits with truncated cone-shaped through hole, the cylindrical structural end of clamp assemblies is positioned at outside rugged housing, clamp assemblies has through hole, clamp assemblies is made up of polylith grip block, the cylindrical structural end of clamp assemblies is provided with external thread, the cylindrical structural end of clamp assemblies is arranged with Compress Spring successively, spring shim and clamp nut, the internal thread of clamp nut coordinates with external thread.The utility model solves the prestress loading of fiber grating and the problem of prestress size adjustment, can realize temperature, humidity, the stress compensation in multi-channel optical fibre grating measuring structure.
Description
Technical field
The utility model belongs to Fiber Grating Sensors Technology field, is specifically related to a kind of fiber-optic grating sensor prestress loading adjusting device.
Background technology
Along with the continuous progress of scientific and technological level, the application of fiber grating sensing technology in the national economic development is also more and more extensive, and will play irreplaceable effect.Under normal circumstances, when use fiber grating carries out sensing detection, need to load certain prestress in the grating region of fiber grating, such as, by fiber grating is manually stretching, then the method be fixed realizes prestressed loading.But, in the middle of the optical fiber grating sensor apparatus of reality, need the prestress to fiber grating loads to regulate, to adapt to the change of detected signal parameter scope.Carrying out in the measurement structure of temperature compensation, stress compensation at the similar multi-channel optical fibre grating that utilizes, also needing to carry out corresponding regulable control to compensating the prestress carried added by light path.Presently, in the middle of existing optical fiber grating sensor apparatus, the mode adding counterweight is usually adopted to realize prestressed loading, but this kind of loading structure deficient in stability, and can not realize the prestressed adjustment of fiber grating.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, a kind of fiber-optic grating sensor prestress loading adjusting device is provided, its structure is simple, easy to operate and stability is strong, can realize the clamping of fiber grating and stretch, solve the problem that existing fiber grating prestress loads difficulty, and by spring, fiber grating inside prestress size is regulated accordingly, temperature, humidity, the stress compensation in multi-channel optical fibre grating measuring structure can be realized, be convenient to promote the use of.
For achieving the above object, the technical solution adopted in the utility model is: a kind of fiber-optic grating sensor prestress loading adjusting device, it is characterized in that: comprise rugged housing, described rugged housing is made up of brace and the termination being connected to brace two ends, described termination has interior large outer little truncated cone-shaped through hole along axis, described termination is provided with clamp assemblies, one end of described clamp assemblies is truncated cone-shaped structure and the other end is cylindrical structural, the truncated cone-shaped structure end of described clamp assemblies is positioned at described rugged housing and fits with truncated cone-shaped through hole, the cylindrical structural end of described clamp assemblies is positioned at outside described rugged housing, described clamp assemblies has the through hole passed for fiber grating along axis, described clamp assemblies is spliced by the grip block that multi-blocked structure is identical and forms, the outer face of described termination has circular groove, the cylindrical structural end of described clamp assemblies is provided with external thread, the cylindrical structural end of described clamp assemblies is arranged with Compress Spring successively, spring shim and clamp nut, one end of described Compress Spring is positioned at circular groove, the internal thread of described clamp nut matches with described external thread.
Above-mentioned a kind of fiber-optic grating sensor prestress loading adjusting device, is characterized in that: the termination at described brace two ends is laid about the Central Symmetry of brace.
Above-mentioned a kind of fiber-optic grating sensor prestress loading adjusting device, is characterized in that: the quantity of described grip block is three pieces.
Above-mentioned a kind of fiber-optic grating sensor prestress loading adjusting device, is characterized in that: the quantity of described brace is two pieces, and two bump contacted chip symmetries are laid.
Above-mentioned a kind of fiber-optic grating sensor prestress loading adjusting device, is characterized in that: described clamp nut is hexagonal nut.
The utility model compared with prior art has the following advantages:
1, the utility model structure is simple, reasonable in design and easy to operate.
2, the utility model adopts clamp assemblies grip optical fiber grating, by combining closely of clamp assemblies and rugged housing, achieves the clamping to fiber grating, has with low cost, that size is less feature.
3, the utility model is by regulating clamp nut, utilizes the prestress size in spring regulating and control fiber grating, solves the difficult problem that in prior art, fiber grating prestress size cannot regulate, and have feature that is easy to assembly, stable performance.
In sum, the clamping that the utility model can solve fiber grating with stretch, prestress loads, the problem of prestress size adjustment, temperature, humidity, the stress compensation in multi-channel optical fibre grating measuring structure can be realized, structure is simple simultaneously, size is less, easy to assembly, is convenient to promote the use of.
Below by drawings and Examples, the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is semisectional view of the present utility model.
Fig. 2 is the structural representation of the utility model rugged housing.
Fig. 3 is the structural representation of the utility model clamp assemblies.
Description of reference numerals:
1-1-termination; 1-11-circular groove; 1-2-brace;
2-clamp assemblies; 2-1-grip block; 2-2-through hole;
3-fiber grating; 4-Compress Spring; 5-spring shim;
6-clamp nut; 7-truncated cone-shaped through hole.
Embodiment
As shown in Figure 1, the utility model comprises rugged housing, described rugged housing is made up of brace 1-2 and the termination 1-1 being connected to brace 1-2 two ends, described termination 1-1 has interior large outer little truncated cone-shaped through hole 7 along axis, described termination 1-1 is provided with clamp assemblies 2, one end of described clamp assemblies 2 is truncated cone-shaped structure and the other end is cylindrical structural, the truncated cone-shaped structure end of described clamp assemblies 2 is positioned at described rugged housing and fits with truncated cone-shaped through hole 7, the cylindrical structural end of described clamp assemblies 2 is positioned at outside described rugged housing, described clamp assemblies 2 has the through hole 2-2 passed for fiber grating 3 along axis, described clamp assemblies 2 is spliced by the grip block 2-1 that multi-blocked structure is identical and forms, the outer face of described termination 1-1 has circular groove 1-11, the cylindrical structural end of described clamp assemblies 2 is provided with external thread, the cylindrical structural end of described clamp assemblies 2 is arranged with Compress Spring 4 successively, spring shim 5 and clamp nut 6, one end of described Compress Spring 4 is positioned at circular groove 1-11, the internal thread of described clamp nut 6 matches with described external thread.
As depicted in figs. 1 and 2, the termination 1-1 at described brace 1-2 two ends lays about the Central Symmetry of brace 1-2, can guarantee like this to load uniform prestress to fiber grating 3 two ends.
As shown in figures 1 and 3, the quantity of described grip block 2-1 is three pieces, and fiber grating 3 can be guaranteed to clamp.
As depicted in figs. 1 and 2, the quantity of described brace 1-2 is two pieces, and two bump contacted chip 1-2 symmetries are laid.
In the present embodiment, described clamp nut 6 is hexagonal nut.
Principle of work of the present utility model is: completed by two cover clamp assemblies 2 after splicing and combining, be placed in the truncated cone-shaped through hole 7 of the termination 1-1 at rugged housing two ends respectively, frustum cone side and the truncated cone-shaped through hole 7 of clamp assemblies 2 fit, by the clamp nut 6 of fiber grating 3 through rugged housing side, spring shim 5, Compress Spring 4 and clamp assemblies 2, behind the middle part of rugged housing, again through the clamp assemblies 2 of rugged housing opposite side, Compress Spring 4, spring shim 5 and clamp nut 6, and guarantee that the grating region of fiber grating 3 is positioned at the medium position of rugged housing.One end of Compress Spring 4 is placed in circular groove 1-11, clamp nut 6 and clamp assemblies 2 are regulated by threaded engagement, make Compress Spring 4 stressed by spring shim 5, under the effect of Compress Spring 4, the round table surface of clamp assemblies 2 and the round platform through hole face of rugged housing 1 fit tightly.Gently draw the other end of fiber grating 3, regulate the clamp nut 6 of opposite side, the round platform through hole face of the round table surface of this side clamp assemblies 2 and rugged housing is fitted tightly under the effect of Compress Spring 4, with clamp assemblies 2 grip optical fibers grating 3, realizes the prestressed loading of fiber grating 3; Controlled the decrement of Compress Spring 4 by clamp nut 6, realize the adjustment to fiber grating inside prestress size.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (5)
1. a fiber-optic grating sensor prestress loading adjusting device, it is characterized in that: comprise rugged housing, described rugged housing is made up of brace (1-2) and the termination (1-1) that is connected to brace (1-2) two ends, described termination (1-1) has interior large outer little truncated cone-shaped through hole (7) along axis, described termination (1-1) is provided with clamp assemblies (2), one end of described clamp assemblies (2) is truncated cone-shaped structure and the other end is cylindrical structural, the truncated cone-shaped structure end of described clamp assemblies (2) is positioned at described rugged housing and fits with truncated cone-shaped through hole (7), the cylindrical structural end of described clamp assemblies (2) is positioned at outside described rugged housing, described clamp assemblies (2) has the through hole (2-2) passed for fiber grating (3) along axis, described clamp assemblies (2) is spliced by the grip block (2-1) that multi-blocked structure is identical and forms, the outer face of described termination (1-1) has circular groove (1-11), the cylindrical structural end of described clamp assemblies (2) is provided with external thread, the cylindrical structural end of described clamp assemblies (2) is arranged with successively Compress Spring (4), spring shim (5) and clamp nut (6), one end of described Compress Spring (4) is positioned at circular groove (1-11), the internal thread of described clamp nut (6) matches with described external thread.
2. according to a kind of fiber-optic grating sensor prestress loading adjusting device according to claim 1, it is characterized in that: the termination (1-1) at described brace (1-2) two ends is laid about the Central Symmetry of brace (1-2).
3. according to a kind of fiber-optic grating sensor prestress loading adjusting device described in claim 1 or 2, it is characterized in that: the quantity of described grip block (2-1) is three pieces.
4. according to a kind of fiber-optic grating sensor prestress loading adjusting device described in claim 1 or 2, it is characterized in that: the quantity of described brace (1-2) is two pieces, two bump contacted chips (1-2) symmetry is laid.
5., according to a kind of fiber-optic grating sensor prestress loading adjusting device described in claim 1 or 2, it is characterized in that: described clamp nut (6) is hexagonal nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034925.8U CN204346467U (en) | 2015-01-19 | 2015-01-19 | A kind of fiber-optic grating sensor prestress loading adjusting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520034925.8U CN204346467U (en) | 2015-01-19 | 2015-01-19 | A kind of fiber-optic grating sensor prestress loading adjusting device |
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| Publication Number | Publication Date |
|---|---|
| CN204346467U true CN204346467U (en) | 2015-05-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520034925.8U Expired - Fee Related CN204346467U (en) | 2015-01-19 | 2015-01-19 | A kind of fiber-optic grating sensor prestress loading adjusting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511013A (en) * | 2015-09-22 | 2016-04-20 | 武汉理工大学 | Auxiliary device for FBG (Fiber Bragg Grating) pasting |
| CN105651319A (en) * | 2016-01-05 | 2016-06-08 | 武汉理工大学 | Packaging device for applying constant pre-stress on fiber grating sensor |
| CN108759681A (en) * | 2018-04-28 | 2018-11-06 | 中国神华能源股份有限公司 | Fiber-optic grating sensor |
| CN109671233A (en) * | 2018-10-12 | 2019-04-23 | 南京派光信息技术有限公司 | A kind of circumference fence based on fiber-optic probe |
| CN110285769A (en) * | 2019-07-12 | 2019-09-27 | 南京大学 | A kind of scale expansion device for distributive fiber optic strain sensing |
| CN110748549A (en) * | 2019-10-29 | 2020-02-04 | 四川拜安科技有限公司 | Intelligent gasket of pretightning force monitoring |
-
2015
- 2015-01-19 CN CN201520034925.8U patent/CN204346467U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105511013A (en) * | 2015-09-22 | 2016-04-20 | 武汉理工大学 | Auxiliary device for FBG (Fiber Bragg Grating) pasting |
| CN105511013B (en) * | 2015-09-22 | 2018-09-11 | 武汉理工大学 | A kind of auxiliary device pasted for fiber grating |
| CN105651319A (en) * | 2016-01-05 | 2016-06-08 | 武汉理工大学 | Packaging device for applying constant pre-stress on fiber grating sensor |
| CN108759681A (en) * | 2018-04-28 | 2018-11-06 | 中国神华能源股份有限公司 | Fiber-optic grating sensor |
| CN109671233A (en) * | 2018-10-12 | 2019-04-23 | 南京派光信息技术有限公司 | A kind of circumference fence based on fiber-optic probe |
| CN110285769A (en) * | 2019-07-12 | 2019-09-27 | 南京大学 | A kind of scale expansion device for distributive fiber optic strain sensing |
| CN110748549A (en) * | 2019-10-29 | 2020-02-04 | 四川拜安科技有限公司 | Intelligent gasket of pretightning force monitoring |
| CN110748549B (en) * | 2019-10-29 | 2021-03-16 | 四川拜安科技有限公司 | Intelligent gasket of pretightning force monitoring |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150520 Termination date: 20160119 |
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| EXPY | Termination of patent right or utility model |