CN209470662U - A kind of tool-type strain transducer - Google Patents
A kind of tool-type strain transducer Download PDFInfo
- Publication number
- CN209470662U CN209470662U CN201920296824.6U CN201920296824U CN209470662U CN 209470662 U CN209470662 U CN 209470662U CN 201920296824 U CN201920296824 U CN 201920296824U CN 209470662 U CN209470662 U CN 209470662U
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- tool
- elastomer
- type strain
- metalwork
- strain transducer
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Abstract
The utility model discloses a kind of tool-type strain transducers; including sensor body; the sensor body includes metalwork and elastomer; the two sides of elastomer are arranged in the metalwork; two metalwork surfaces are symmetrically arranged with mounting hole, and the surface of elastomer is pasted with four foil gauges, and four foil gauges form full-bridge; the elastomer two sides setting is jagged, and the elastomeric outer is provided with protective case.Tool-type strain transducer provided by the utility model is easy for installation, and using quick waterproof again, and test data is accurate, is suitable for various engineering surveys.
Description
Technical field
The utility model relates to sensor technical field, in particular to a kind of tool-type strain transducer.
Background technique
Resistor straining testing is using earliest and most popular technology in structural test, and can heavy construction structure, which meet, sets
Meter requires, and to carry out contracting ratio test, whether the heavy construction to have completed, which meets, sets；Large bridge removes necessary Acceptance Test
Outside, long-term permanent monitoring is the necessary means for preventing bridge burst incident；Security protection of the military security protection works to personnel
Whether up to standard etc. require to carry out strain testing.The purpose of strain testing is the deformation small from measured structure, solution structure
Deformation tendency can also extrapolate the power-adaptability to changes for generating this deformation, certainly, to the test of malformation in engineering structure
Means are very much, such as laser displacement, vibration, torque, loading power, are largely used in view of the country in engineering test field
There are many deficiencies in the patch of foil gauge and foil gauge, domestic also to research and develop tool-type strain transducer in early stage, often
What is seen is the form that outer likeness in form arch bridge is made into the aluminium flake of 15mm wide, thickness 1mm or so or iron plate, although this form makes
It is easy, inexpensive, but in engineering test, error can be very big.
Utility model content
When to overcome tool-type strain transducer existing in the prior art for engineering survey, the larger problem of error,
The utility model provides a kind of tool-type strain transducer.
Specific technical solution is as follows:
A kind of tool-type strain transducer, including sensor body, the sensor body include metalwork and elastomer,
The two sides of elastomer are arranged in the metalwork, and two metalwork surfaces are symmetrically arranged with mounting hole, the elasticity body surface
Face is pasted with four foil gauges, and four foil gauges form full-bridge, and the elastomer two sides setting is jagged, and the elasticity
Protective case is provided with outside body.
Preferably, two metalwork surfaces are symmetrically arranged with mounting hole at a distance of 76mm.
Preferably, the mounting hole is elliptical aperture.
Preferably, the resistance value of the foil gauge is 350 Ω.
The utility model has the advantages that compared with prior art
Sensor body described in tool-type strain transducer provided by the utility model includes metalwork and elastomer,
Surface of elastomer is pasted with four foil gauges, and four foil gauges form full-bridge, this sensor is easy for installation, using fast again
Waterproof, and test data is accurate, is suitable for various engineering surveys.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of tool-type strain transducer of the utility model；
Fig. 2 is a kind of internal structure top view of tool-type strain transducer of the utility model；
Fig. 3 is a kind of internal structure main view of tool-type strain transducer of the utility model；
Fig. 4 is the structural schematic diagram of resistance bridge in a kind of tool-type strain transducer of the utility model.
In figure, 1- metalwork, 11- mounting hole, 2- elastomer, 21- foil gauge, 22- notch, 23- protective case.
Specific embodiment
Specific embodiment of the present utility model is described further with reference to the accompanying drawing.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
The utility model discloses a kind of tool-type strain transducers, as shown in Figure 1, including sensor body, sensor
Ontology includes metalwork 1 and elastomer 2, and the two sides of elastomer 2 are arranged in metalwork 1.
As shown in Fig. 2, two 1 surfaces of metalwork are symmetrically arranged with mounting hole 11, two 1 surfaces of metalwork are symmetrically arranged with
Mounting hole 11 is elliptical aperture at a distance of 76mm, mounting hole 11, solves punching offset problem.2 surface mount of elastomer has four to answer
Become piece 21, four foil gauges 21 form full-bridge, wherein the resistance value of foil gauge 21 is 350 Ω.As shown in figure 3,2 two sides of elastomer
It is arranged jagged 22, and is provided with protective case 23 outside elastomer 2.In order to make sensor that there is elasticity well, in ontology
There are deformation notch 22, sensor bodies to complete finishing by treatment process such as Precision Machining, quenching, annealing, timeliness at place.It is right
It polishes at the sensor body patch processed, four 350 Ω foil gauges 21 composition full-bridges are pasted in side, and (resistance bridge is as schemed
Shown in 4), the changed stress change principle of resistance value for making foil gauge 21 using its operating time degree variation (stretch or compress),
It is applied under the bridge pressure effect on resistance bridge, output signal voltage generates variation, and signal voltage send subsequent amplification Acquisition Instrument
Device.
Application method: the feature of this sensor maximum be it is easy for installation, beat on component by center sensor pitch-row 76mm
Hole installs swell fixture, then tool-type strain transducer is installed, that is, can be used.The joint adhesive that past pastes foil gauge 21 needs
To solidify for a long time, this method using tool-type strain transducer, not only fast, but also (tool-type sensor has anti-waterproof
Water function).In use, without departing from the range ability of sensor, sensor is reusable.
The embodiments of the present invention is explained in detail in conjunction with attached drawing above, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the protection scope of the utility model.
Claims (4)
1. a kind of tool-type strain transducer, it is characterised in that: including sensor body, the sensor body includes metalwork
And the two sides of elastomer are arranged in elastomer, the metalwork, two metalwork surfaces are symmetrically arranged with mounting hole, described
Surface of elastomer is pasted with four foil gauges, and four foil gauges form full-bridge, and the elastomer two sides setting is jagged, and
The elastomeric outer is provided with protective case.
2. a kind of tool-type strain transducer according to claim 1, it is characterised in that: two metalwork surfaces pair
Title is provided with mounting hole at a distance of 76mm.
3. a kind of tool-type strain transducer according to claim 2, it is characterised in that: the mounting hole is elliptical aperture.
4. a kind of tool-type strain transducer according to claim 1, it is characterised in that: the resistance value of the foil gauge is
350Ω。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920296824.6U CN209470662U (en) | 2019-03-09 | 2019-03-09 | A kind of tool-type strain transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920296824.6U CN209470662U (en) | 2019-03-09 | 2019-03-09 | A kind of tool-type strain transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209470662U true CN209470662U (en) | 2019-10-08 |
Family
ID=68094728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920296824.6U Active CN209470662U (en) | 2019-03-09 | 2019-03-09 | A kind of tool-type strain transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209470662U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033585A (en) * | 2020-09-01 | 2020-12-04 | 天津动网信息科技有限公司 | Stress sensing device capable of being welded and installed |
-
2019
- 2019-03-09 CN CN201920296824.6U patent/CN209470662U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112033585A (en) * | 2020-09-01 | 2020-12-04 | 天津动网信息科技有限公司 | Stress sensing device capable of being welded and installed |
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