CN201983753U - Surface strain gauge sensor with outrange protection function - Google Patents
Surface strain gauge sensor with outrange protection function Download PDFInfo
- Publication number
- CN201983753U CN201983753U CN2010206881132U CN201020688113U CN201983753U CN 201983753 U CN201983753 U CN 201983753U CN 2010206881132 U CN2010206881132 U CN 2010206881132U CN 201020688113 U CN201020688113 U CN 201020688113U CN 201983753 U CN201983753 U CN 201983753U
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- magnet
- surface strain
- sensor
- outrange
- expansion link
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Abstract
The utility model discloses a surface strain gauge sensor with the outrange protection function, which includes a base, an expansion link and a magnet, wherein the expansion link passes through the base and is attracted by the magnet, and meanwhile the base is attracted by the magnet. The surface strain gauge sensor with the outrange protection function has good stability and high reliability; the magnet design on one side of the base is adopted, and the magnetic force strength and the attraction surface size of the magnet can be determined through tests and calculations; the attraction action of the magnet enables the surface strain gauge sensor to realize the outrange protection function, and the expansion link of the sensor can be timely and automatically separated from the base in the outrange state, therefore, sensitive elements of the sensor can be effectively protected, and the sensor can be used repeatedly; and the surface strain gauge sensor has good economic prospect and can generate good social benefits.
Description
Technical field
The utility model relates to a kind of surface strain flowmeter sensor, is specifically related to a kind of surface strain flowmeter sensor with outrange defencive function.
Background technology
Existing surface strain flowmeter sensor has resistance-type, types such as type vibration wire, its appearance forrns is similar, as shown in Figure 1, conventional, electric-resistance formula surface strain flowmeter sensor primary structure comprises signal wire 1, pedestal 2, spring leaf 3 and expansion link 4, in use, pedestal 2 is separately fixed at test specimen 5 surfaces, under the effect of pressure F, when test specimen 5 is in extremely stretching or compressive state, following two kinds of situations will appear in conventional, electric-resistance formula surface strain flowmeter sensor: (one) is that sensor base is thrown off from the test specimen surface, and sensor falls, and may cause breaking of sensor; (2) be that pedestal 2 still is fixed on test specimen 5 surfaces, but inner components and parts, especially irreversible infringement will appear in spring leaf 3.Therefore, this common conventional, electric-resistance formula surface strain flowmeter sensor can't satisfy user demand fully.
Summary of the invention
Goal of the invention: at the deficiencies in the prior art; the purpose of this utility model provides a kind of surface strain flowmeter sensor with outrange defencive function; when being implemented in outrange, protect the surface strain flowmeter sensor effectively, make it satisfy request for utilization.
Technical scheme: in order to realize the foregoing invention purpose, the technical solution adopted in the utility model is:
A kind of surface strain flowmeter sensor with outrange defencive function comprises pedestal and expansion link, also comprises magnet, and described expansion link passes pedestal and magnet adhesive mutually, described magnet and pedestal adhesive.
Described pedestal and expansion link are pedestal that iron and steel material quality makes and flexible.
Described surface strain flowmeter sensor is resistance-type surface strain flowmeter sensor or type vibration wire surface strain flowmeter sensor.
Surface strain flowmeter sensor with outrange defencive function of the present utility model; pedestal has 2; a pedestal place has increased a magnet therein; magnet and pedestal adhesive; simultaneously expansion link sees through pedestal hole and magnet adhesive, is in small deformation at test specimen, promptly is in the useful range scope of sensor when interior; pedestal is close to test specimen surface drive magnet and expansion link is synchronized with the movement, and accurately demarcates the flexible dependent variable of test specimen.When test specimen is in the extended state of large deformation; when being outrange; about two pedestals from motion, distance surpasses useful range, the stretching bar is come out by more tractive; because the length and the traction force of tractive are directly proportional; when magnetive attraction during less than traction force, magnet and expansion link disconnect, the expansion link withdrawal; avoid the work of sensor outrange, effectively protect sensor.When test specimen is in the compressive state of large deformation; about two pedestal move toward one another, when the magnetive attraction of pedestal and magnet less than the top of expansion link during from power, expansion link can be with the magnet top from pedestal; expansion link withdraws from the compression deformation state and is in original state, effectively protects sensor.
Outrange defencive function scheme of the present utility model is equally applicable to the sensor of widely used vibrating string type strain flowmeter sensor and similar structures thereof.
Beneficial effect: the resistance-type surface strain flowmeter sensor with outrange defencive function of the present utility model; good stability; the reliability height; by carry out the magnet design at a side group seat place; realized in time throwing off automatically under outrange; effectively protect sensor, had good economic outlook, can produce good social benefit.
Description of drawings
Fig. 1 is the structural representation of conventional, electric-resistance formula surface strain flowmeter sensor.
Fig. 2 is the part-structure synoptic diagram of resistance-type surface strain flowmeter sensor of the present utility model.
Fig. 3 has the work synoptic diagram of the surface strain flowmeter sensor of outrange defencive function when being the pulling force outrange.
Fig. 4 has the work synoptic diagram of the surface strain flowmeter sensor of outrange defencive function when being the pressure outrange.
Embodiment
Below in conjunction with accompanying drawing the utility model is further explained.
As shown in Figure 2, be the surface strain flowmeter sensor with outrange defencive function of the present utility model.
This surface strain flowmeter sensor comprises structures such as pedestal 2 and expansion link 4, pedestal 2 has 2, pedestal 2 places have increased a magnet 6 therein, magnet 6 and pedestal 2 adhesives, pedestal 2 is provided with the hole that is used with expansion link 4, magnet 6 surfaces are provided with the pit that matches with the club head that stretches, expansion link 4 passes hole on the pedestal and magnet 6 in the tight adhesive of pit, the magnetism intensity of its magnet and the size of adhesive face by experiment with calculate determine that pedestal 2 and expansion link 4 are pedestal that iron and steel material quality makes and flexible.
Resistance-type surface strain flowmeter sensor with outrange defencive function of the present utility model; be in small deformation at test specimen; when promptly being in the useful range scope of sensor, pedestal is close to that the test specimen surface drives magnet and expansion link is synchronized with the movement, and accurately demarcates the flexible dependent variable of test specimen.
As shown in Figure 3; when test specimen is in the extended state of large deformation, promptly during outrange, about two pedestals from motion; when distance surpasses useful range; the stretching bar is come out by more tractive, because the length and the traction force of tractive be directly proportional, when magnetive attraction during less than traction force; magnet and expansion link disconnect; the work of sensor outrange is avoided in the expansion link withdrawal, effectively protects sensor.
As shown in Figure 4, when test specimen is in the compressive state of large deformation, about two pedestal move toward one another; when the magnetive attraction of pedestal and magnet less than the top of expansion link during from power; expansion link can be with the magnet top from pedestal, and expansion link withdraws from the original state of compression deformation recovering state, effectively protects sensor.
Existing surface strain flowmeter sensor has resistance-type, types such as type vibration wire, and its appearance forrns is similar, and present technique is applicable to the sensor of widely used vibrating string extensometer and similar structures thereof fully.
Surface strain flowmeter sensor with outrange defencive function of the present utility model; good stability; the reliability height; by carry out the magnet design at a side group seat place; realized in time throwing off automatically under outrange; effectively protect sensor, had good economic outlook, can produce good social benefit.
Claims (3)
1. the surface strain flowmeter sensor with outrange defencive function comprises pedestal and expansion link, it is characterized in that: also comprise magnet, described expansion link passes pedestal and magnet adhesive mutually, described magnet and pedestal adhesive.
2. the surface strain flowmeter sensor with outrange defencive function according to claim 1 is characterized in that: described pedestal and expansion link are pedestal and the expansion link that iron and steel material quality is made.
3. the surface strain flowmeter sensor with outrange defencive function according to claim 1 is characterized in that: described surface strain flowmeter sensor is resistance-type surface strain flowmeter sensor or type vibration wire surface strain flowmeter sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206881132U CN201983753U (en) | 2010-12-30 | 2010-12-30 | Surface strain gauge sensor with outrange protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206881132U CN201983753U (en) | 2010-12-30 | 2010-12-30 | Surface strain gauge sensor with outrange protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201983753U true CN201983753U (en) | 2011-09-21 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206881132U Expired - Fee Related CN201983753U (en) | 2010-12-30 | 2010-12-30 | Surface strain gauge sensor with outrange protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201983753U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109357606A (en) * | 2018-11-30 | 2019-02-19 | 河南省计量科学研究院 | A kind of calibrating device for vibrating string type strain transducer clamping device |
| CN109387310A (en) * | 2018-09-25 | 2019-02-26 | 西北工业大学 | A kind of high-precision multi-axis force transducer protective device |
-
2010
- 2010-12-30 CN CN2010206881132U patent/CN201983753U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109387310A (en) * | 2018-09-25 | 2019-02-26 | 西北工业大学 | A kind of high-precision multi-axis force transducer protective device |
| CN109357606A (en) * | 2018-11-30 | 2019-02-19 | 河南省计量科学研究院 | A kind of calibrating device for vibrating string type strain transducer clamping device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110921 Termination date: 20111230 |