CN206891461U - A kind of fiber-optic grating sensor with clamp structure - Google Patents
A kind of fiber-optic grating sensor with clamp structure Download PDFInfo
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- CN206891461U CN206891461U CN201720816283.6U CN201720816283U CN206891461U CN 206891461 U CN206891461 U CN 206891461U CN 201720816283 U CN201720816283 U CN 201720816283U CN 206891461 U CN206891461 U CN 206891461U
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Abstract
The utility model discloses a kind of fiber-optic grating sensor with clamp structure, including FRP intellectual ribs, taper holder and outer anchoring piece, outer anchoring piece is symmetricly set in the both ends of FRP intellectual rib length directions, installation through-hole is provided with taper holder, the outer surface of taper holder is circular conical surface, and taper holder is sheathed on FRP intellectual ribs and in outer anchoring piece.The utility model is realized between FRP intellectual ribs and hardware and effectively bonded without gel, so as to improve sensor axial tensile strength compared to prior art, increase range, solve to connect insecure, the problems such as easily departing from simultaneously, improve sensor accuracy and anti-fatigue performance, increase the service life.
Description
Technical field
The utility model belongs to sensor technical field, and in particular to a kind of optical fiber grating sensing with clamp structure
Device.
Background technology
At present, structural safety monitoring is the core research direction of civil engineering.Fiber-optic grating sensor and traditional monitoring side
Method is compared, and is had induction element small volume, precision height, electromagnetism interference, good endurance, absolute measurement and is easy to implement distribution
Formula is transmitted in the unique advantages such as one with real-time in-line testing and collection sensing and data, and it is ideal to turn into civil infrastructure
Safety monitoring sensing element.
Using optical fiber and the natural compatibility of FRP material, the two is complex as a whole, FRP intellectual ribs is formed, can be made
For the center sensing part of fibre optical sensor.But because FRP material and fiber optic materials fragility are high, anti-shear ability difference fatal
Weakness, the connection of FRP intellectual ribs and metal structure is largely limited, using traditional gluing mode easily by external environment shadow
Ring, there is the deficiencies of colloid creep properties is big, high temperature resistance high humidity environment ability, condition of cure are complicated, cure cycle is long, lead
Cause end to fix the situations such as insecure, clamping effect is poor, easy disengaging, influence the precision, service life and test of fibre optical sensor
Range, while limit the production efficiency of fibre optical sensor.It is special that if the connection to FRP intellectual ribs and metal structure is not taken
Treatment measures, it is difficult to ensure the collaborative work in both later stages, cause the deviation of test result and actual value.
Utility model content
In order to solve the above-mentioned technical problem, the utility model provides a kind of optical fiber grating sensing with clamp structure
Device.
In order to achieve the above object, the technical solution of the utility model is as follows：
The utility model provides a kind of fiber-optic grating sensor with clamp structure, including FRP intellectual ribs, taper clamping
Part and outer anchoring piece, outer anchoring piece are symmetricly set in the both ends of FRP intellectual rib length directions, and it is logical to be provided with installation in taper holder
Hole, the outer surface of taper holder is circular conical surface, and taper holder is sheathed on FRP intellectual ribs and in outer anchoring piece.
The utility model is realized compared to prior art, between FRP intellectual ribs and hardware effectively to be bonded without gel, from
And sensor axial tensile strength is improved, increase range, while solve to connect insecure, the problems such as easily departing from, improve sensor essence
Degree and anti-fatigue performance, increase the service life.
Wherein, the angle of taper of above-mentioned taper holder is 2-2.5 °.
On the basis of above-mentioned technical proposal, following improvement can be also done：
As preferable scheme, above-mentioned FRP intellectual ribs include optical fiber, grating and are coated on fiber grating surface
Glass fibre and epoxy resin composite.
Using above-mentioned preferable scheme, fiber grating is closely wrapped by glass fibre and epoxy resin composite are comprehensive,
The problem of avoiding steel pipe in conventional package form directly to contact with fiber grating, and being broken by local friction, can not only
Protection fiber grating well, and Intellisense layer can be formed, so as to accurately transmit extraneous be measured.
As preferable scheme, above-mentioned taper holder is additionally provided with multiple radial blind holes close to one end of its minor diameter,
Radial blind holes are in its circumferencial direction radial distribution and are connected respectively with installation through-hole.
Using above-mentioned preferable scheme, taper holder sets radial blind holes close to one end of its minor diameter, is easy to taper
Preferably agree with and fix with FRP intelligent rib ends in holder front end.
As preferable scheme, the outer surface of above-mentioned outer anchoring piece is straight tube shape, and outer anchoring piece is interior and by close to FRP intelligence
Energy muscle is sequentially provided with end spacing hole, realizing middle limiting hole, extruded hole and end nail catcher screwed hole to away from FRP intellectual ribs direction,
The diameter of end spacing hole is more than the diameter in realizing middle limiting hole, and extruded hole is conical bore and its angle of taper is less than taper holder
Angle of taper, taper holder is arranged in extruded hole.
Using above-mentioned preferable scheme, taper holder is certain due to having between the two when being squeezed into inside outer anchoring piece
Angle, taper holder is easier to be squeezed into, and is fitted close both.
As preferable scheme, positioning convex ring is formed on the periphery at the both ends of above-mentioned FRP intellectual rib length directions, it is fixed
Position bulge loop is arranged in extruded hole, and positioning convex ring, the length dimension of taper holder are respectively less than the length dimension of extruded hole.
Using above-mentioned preferable scheme, avoid occurring taper holder in extrusion process excessively being promoted and squeezed beyond taper
Intermediate pressure section, lose anchoring effect.
As preferable scheme, the maximum gauge of above-mentioned extruded hole is smaller 0.05- than the maximum gauge of taper holder
0.1mm。
Using above-mentioned preferable scheme, effect circumferential force can be applied with to taper holder, brings it about radial deformation.
As preferable scheme, above-mentioned taper holder is made using soft metal.
Using above-mentioned preferable scheme, taper holder is easy due to being acted on by thrust and circumferential force during extruding
Radially deform upon, so as to which FRP intelligent rib ends be clamped.
As preferable scheme, above-mentioned outer anchoring piece is made using hard stainless steel material.
Using above-mentioned preferable scheme, in extrusion process, outer anchoring piece can play excellent effect of contraction, it is ensured that itself
It is unlikely to deform while controls the overall deformation profile of taper holder.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present utility model.
Fig. 2 is the utility model Fig. 1 A-A to structure sectional view.
Fig. 3 is dimensional structure diagram of the present utility model.
Fig. 4 is the structural representation of taper holder of the present utility model.
Fig. 5 is the structural representation of taper holder smaller diameter end of the present utility model.
Fig. 6 is the structural representation of taper holder larger diameter end of the present utility model.
Fig. 7 is the structural representation of outer anchoring piece of the present utility model.
Fig. 8 is Fig. 7 of the present utility model B-B direction structure sectional view.
Embodiment
Describe preferred embodiment of the present utility model in detail below in conjunction with the accompanying drawings.
In order to reach the purpose of this utility model, as shown in Figure 1 to Figure 3, in one of which embodiment party of the present utility model
A kind of fiber-optic grating sensor with clamp structure, including FRP intellectual ribs 1, taper holder 2 and outer anchoring piece are provided in formula
3, outer anchoring piece 3 is symmetricly set in the both ends of the length direction of FRP intellectual ribs 1, and installation through-hole, taper are provided with taper holder 2
The outer surface of holder 2 is circular conical surface, and taper holder 2 is sheathed on FRP intellectual ribs 1 and in outer anchoring piece 3.
Present embodiment is realized compared to prior art, between FRP intellectual ribs and hardware effectively to be bonded without gel, from
And sensor axial tensile strength is improved, increase range, while solve to connect insecure, the problems such as easily departing from, improve sensor essence
Degree and antifatigue old performance, increase the service life.
Wherein, the angle of taper of above-mentioned taper holder 2 is 2-2.5 °, and present embodiment is optional 2 °, 2.3 °, 2.5 °,
It can specifically select according to the actual requirements.
As shown in Figure 2 to Figure 3, in order to further optimize implementation result of the present utility model, of the present utility model another
In a kind of embodiment, on the basis of foregoing teachings, above-mentioned FRP intellectual ribs 1 include optical fiber 1-1, grating 1-2 and bag
It is overlying on the glass fibre and epoxy resin composite 1-3 on fiber grating surface.
Using above-mentioned preferable scheme, fiber grating is closely wrapped by glass fibre and epoxy resin composite are comprehensive,
The problem of avoiding steel pipe in conventional package form directly to contact with fiber grating, and being broken by local friction, can not only
Protection fiber grating well, and Intellisense layer can be formed, so as to accurately transmit extraneous be measured.
As shown in Figures 4 to 6, in order to further optimize implementation result of the present utility model, of the present utility model another
In a kind of embodiment, on the basis of foregoing teachings, above-mentioned taper holder 2 is additionally provided with four close to one end of its minor diameter
Individual radial blind holes, radial blind holes are in its circumferencial direction radial distribution and are connected respectively with installation through-hole.
Using above-mentioned preferable scheme, taper holder 2 sets radial blind holes close to one end of its minor diameter, is easy to taper
Preferably agree with and fix with FRP intelligent rib ends in holder front end.
As shown in Fig. 7 to Fig. 8, in order to further optimize implementation result of the present utility model, of the present utility model another
In a kind of embodiment, on the basis of foregoing teachings, the outer surface of above-mentioned outer anchoring piece 3 is straight tube shape, in outer anchoring piece 3
And by close to FRP intellectual ribs 1 to away from the direction of FRP intellectual ribs 1 be sequentially provided with end spacing hole, realizing middle limiting hole, extruded hole and
End nail catcher screwed hole, the diameter of end spacing hole are more than the diameter in realizing middle limiting hole, and extruded hole is conical bore and its bevel angle
Degree is less than the angle of taper of taper holder, and taper holder is arranged in extruded hole.
Using above-mentioned preferable scheme, taper holder is certain due to having between the two when being squeezed into inside outer anchoring piece
Angle, taper holder is easier to be squeezed into, and is fitted close both.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, positioning convex ring is formed on the periphery at the both ends of the above-mentioned length direction of FRP intellectual ribs 1, is positioned
Bulge loop is arranged in extruded hole, and positioning convex ring, the length dimension of taper holder 2 are respectively less than the length dimension of extruded hole.
Using above-mentioned preferable scheme, avoid occurring taper holder 2 in extrusion process excessively being promoted and exceed taper
Crush-zone, lose anchoring effect.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, the maximum gauge of above-mentioned extruded hole is smaller 0.05-0.1mm than the maximum gauge of taper holder,
Present embodiment optional 0.05mm, 0.08mm, 0.1mm.
Using above-mentioned preferable scheme, effect circumferential force can be applied with to taper holder, brings it about radial deformation.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, above-mentioned taper holder 2 is made using soft metal.
Using above-mentioned preferable scheme, taper holder 2 is during extruding due to being held by thrust and circumferential force effect
Easily radially deform upon, so as to which FRP intelligent rib ends be clamped.
In order to further optimize implementation result of the present utility model, in another embodiment of the present utility model,
On the basis of foregoing teachings, above-mentioned outer anchoring piece 3 is made using hard stainless steel material.
Using above-mentioned preferable scheme, in extrusion process, outer anchoring piece 3 can play excellent effect of contraction, it is ensured that from
Body is unlikely to deform while controls the overall deformation profile of taper holder.
Above-described is only preferred embodiment of the present utility model, it is noted that for the ordinary skill of this area
For personnel, on the premise of not departing from the utility model and creating design, various modifications and improvements can be made, these all belong to
In the scope of protection of the utility model.
Claims (9)
- A kind of 1. fiber-optic grating sensor with clamp structure, it is characterised in that including FRP intellectual ribs, taper holder and Outer anchoring piece, outer anchoring piece are symmetricly set in the both ends of FRP intellectual rib length directions, installation through-hole are provided with taper holder, The outer surface of taper holder is circular conical surface, and taper holder is sheathed on FRP intellectual ribs and in outer anchoring piece.
- 2. the fiber-optic grating sensor according to claim 1 with clamp structure, it is characterised in that FRP intellectual rib bags Include optical fiber, grating and the glass fibre and epoxy resin composite that are coated on fiber grating surface.
- 3. the fiber-optic grating sensor according to claim 1 with clamp structure, it is characterised in that taper holder Angle of taper is 2-2.5 °.
- 4. the fiber-optic grating sensor according to claim 1 with clamp structure, it is characterised in that taper holder leans on One end of its nearly minor diameter is additionally provided with multiple radial blind holes, and radial blind holes are led in its circumferencial direction radial distribution and respectively with installing Hole is connected.
- 5. the fiber-optic grating sensor according to claim 1 with clamp structure, it is characterised in that outside outer anchoring piece Surface is straight tube shape, and outer anchoring piece is interior and by spacing to end is sequentially provided with away from FRP intellectual ribs direction close to FRP intellectual ribs Hole, realizing middle limiting hole, extruded hole and end nail catcher screwed hole, the diameter of end spacing hole are more than the diameter in realizing middle limiting hole, squeeze It is the angle of taper that conical bore and its angle of taper are less than taper holder to press hole, and taper holder is arranged in extruded hole.
- 6. the fiber-optic grating sensor according to claim 5 with clamp structure, it is characterised in that FRP intellectual ribs are grown Spend on the periphery at the both ends in direction and form positioning convex ring, positioning convex ring is arranged in extruded hole, positioning convex ring, taper holder Length dimension be respectively less than the length dimension of extruded hole.
- 7. the fiber-optic grating sensor according to claim 5 with clamp structure, it is characterised in that the maximum of extruded hole Diameter is smaller 0.05-0.1mm than the maximum gauge of taper holder.
- 8. the fiber-optic grating sensor according to claim 5 with clamp structure, it is characterised in that taper holder is adopted It is made with soft metal.
- 9. the fiber-optic grating sensor according to claim 1 with clamp structure, it is characterised in that outer anchoring piece uses Hard stainless steel material is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816283.6U CN206891461U (en) | 2017-07-06 | 2017-07-06 | A kind of fiber-optic grating sensor with clamp structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720816283.6U CN206891461U (en) | 2017-07-06 | 2017-07-06 | A kind of fiber-optic grating sensor with clamp structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206891461U true CN206891461U (en) | 2018-01-16 |
Family
ID=61299091
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720816283.6U Active CN206891461U (en) | 2017-07-06 | 2017-07-06 | A kind of fiber-optic grating sensor with clamp structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206891461U (en) |
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2017
- 2017-07-06 CN CN201720816283.6U patent/CN206891461U/en active Active
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