CN102323022A - A kind of strain gauge transducer of measurement structure amount of deflection - Google Patents
A kind of strain gauge transducer of measurement structure amount of deflection Download PDFInfo
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- CN102323022A CN102323022A CN201110247467A CN201110247467A CN102323022A CN 102323022 A CN102323022 A CN 102323022A CN 201110247467 A CN201110247467 A CN 201110247467A CN 201110247467 A CN201110247467 A CN 201110247467A CN 102323022 A CN102323022 A CN 102323022A
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- elastic body
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Abstract
The invention discloses a kind of strain gauge transducer of measurement structure amount of deflection, be fixed on the tested person structural table wall, said sensor comprises elastic body and is located at the strainometer in the elastic body that elastic body is provided with the mounting hole that is distributed in the strainometer both sides; Also comprise mounting bracket, one of which end and tested person structure weld together, and the other end passes said mounting hole and is fixed on the mounting hole place by self-locking nut, and wherein said mounting bracket is corresponding one by one with mounting hole; Said elastic body is fixed on the neutral surface position of tested person structure through mounting bracket.The strain gauge transducer of measurement structure amount of deflection of the present invention has overcome the technological deficiency that sensor in the prior art can not detect beam in real time, can improve the accuracy of sensor measurement simultaneously, improves sensor serviceable life.
Description
Technical field
The invention belongs to the strain-type sensory field, be specifically related to a kind of amount of deflection of detection architecture beam or reach the sensor-based system that detects other physical quantity through detecting amount of deflection.
Background technology
At present; The mode from externally measured displacement is adopted in measurement for the structural beams amount of deflection basically; Displacement transducer is installed in the measured point below of tested beam, when this kind test mode is can only be to beam static, the space mounting position transducer that He Liangxia has; This kind mode can not detect beam in real time, is difficult to measure with this kind mode the amount of deflection of runway grider as driving.
Summary of the invention
The technical matters that the present invention will solve provides a kind of being installed on the tested beam, measures the sensor of beam deflection in real time.
In order to solve the problems of the technologies described above, the present invention provides following technical scheme:
A kind of strain gauge transducer of measurement structure amount of deflection is fixed on the tested person structural table wall, and wherein the tested person structure is the beam body,
Said sensor comprises elastic body and is located at strainometer, metering circuit and the respective wire in the elastic body that said elastic body is provided with the mounting hole that is distributed in the strainometer both sides;
Also comprise mounting bracket, one of which end and tested person structure weld together, and the other end passes said mounting hole and is fixed on the mounting hole place by self-locking nut, and wherein said mounting bracket is corresponding one by one with mounting hole;
Said elastic body is fixed on the neutral surface position of tested person structure through mounting bracket.
Further, also comprise elastomeric protective cover, said elastic body is provided with the threaded hole that is used to install protective cover; Protective cover is fixed on the elastic body through the web member that adapts with said threaded hole.
Further, also comprise and introduce/go out the fairlead that lead is used, offer the through hole that is used to settle said fairlead on the said elastic body.
Further, be provided with elastomeric stress breach by the said strainometer.
Further, said each mounting bracket, elastic body are symmetrical structure, and wherein each mounting hole and strainometer all are in elastomeric plane of symmetry position, and each mounting bracket, the elastomeric plane of symmetry are all concordant with the neutral surface of tested person structure.
With the sensor of measurement structure beam deflection of the present invention, have following technique effect:
1, sensor (comprising its inner strainometer, metering circuit) is located on the neutral surface of tested person structure, this collection position is unique, and lateral pressure or pulling force are all little or do not have basically, can effectively protect the elastic body as sensor main body; When the tested person structure deforms; The tested person structure can produce change in location by related mounting bracket; The displacement of several mounting brackets (amount of deflection) difference causes the elastic body strain regions to produce distortion; This distortion back output electric signal of strainometer induction; Lead sends to the sensing data treating apparatus of peripheral hardware with corresponding electric signal, and the sensing data treating apparatus combines the stiffness characteristics of tested person structure, can contrary obtain corresponding amount of deflection and related physical quantity or further obtain the physical quantitys such as load that cause that amount of deflection changes; The elastic body of this sensor employing special construction, special strainometer mounting means and special test circuit make sensor very low to the changing sensitivity of non-amount of deflection direction, and signal to noise ratio (S/N ratio) is high.
2, in order to protect sensor to receive extraneous bump etc., ad hoc protective cover.
3, in order to make the strainometer present position become the sensitive position that elastic body detects deflection deformation, the stress breach is set, makes strainometer and adjacent position thereof become the zone that the elastic body ess-strain is concentrated, improve the sensor output sensitivity.
4, sensor is located on the neutral surface of tested person structure; Directly sensor is produced (removing on the amount of deflection direction) side force (measurement counter-force) in order to reduce the tested person structure; Avoid sensor to produce and the irrelevant deformation quantity of beam body amount of deflection deformation, the accuracy that influence is measured and sensor serviceable life.
When sensor is installed, guarantee that the plane of symmetry of sensor is concordant with the neutral surface of tested beam, promptly whole sensor comprises that mounting bracket is all along tested beam neutral surface symmetry.It is poor that sensor is promptly measured the amount of deflection of Liang Anzhuanzhijiachu.Installation can effectively reduce the output that non-amount of deflection causes like this, and can improve the output quantity of sensor.
Description of drawings
Below in conjunction with accompanying drawing and embodiment technical scheme of the present invention is further specified:
Fig. 1 is the view of strain gauge transducer before the deformation of tested person structure generation amount of deflection of measurement structure amount of deflection of the present invention.
Fig. 2 is the view after the tested person structure generation amount of deflection deformation corresponding with Fig. 1.
Fig. 3 is an elastomeric structural representation among a kind of embodiment of the strain gauge transducer of measurement structure amount of deflection of the present invention.
Fig. 4 is the structural representation with the strain gauge transducer of the corresponding measurement structure amount of deflection of the present invention of Fig. 3.(not drawing protective cover)
Fig. 5 is the plan structure synoptic diagram with the strain gauge transducer of the corresponding measurement structure amount of deflection of the present invention of Fig. 4.
Fig. 6 is the side-looking structural representation with the strain gauge transducer of the corresponding measurement structure amount of deflection of the present invention of Fig. 4.
Wherein tested person structure 1, sensor 2, mounting bracket 3, protective cover 4, web member 5, tested person structure neutral surface 62, the plane of symmetry 61, fairlead 7, protection housing 8, elastic body 9, self-locking nut 10, mounting hole 11, threaded hole 12, stress breach 13, through hole 14, strainometer installing zone 15, metering circuit installing zone 16.
Embodiment
Extremely shown in Figure 6 like Fig. 1; The strain gauge transducer 2 of measurement structure amount of deflection of the present invention is fixed on the tested person structure 1 table wall, and wherein tested person structure 1 is the beam body; When amount of deflection deformation took place tested person structure 1, corresponding amount of deflection deformation also can take place in said strain gauge transducer 2.
Said sensor 2 comprises elastic body 9 and is located at strainometer, metering circuit and the respective wire (elastic body 9 is provided with special strainometer installing zone 15 and metering circuit installing zone 16) in the elastic body 9 that said elastic body 9 is provided with the mounting hole 11 that is distributed in the strainometer both sides; Also comprise mounting bracket 3, one of which end and tested person structure 1 weld together, and the other end passes said mounting hole 11 and is fixed on mounting hole 11 places by self-locking nut 10, and wherein said mounting bracket 3 is corresponding one by one with mounting hole 11; Said elastic body 9 is fixed on tested person structure neutral surface 62 positions through mounting bracket 3.
Said sensor 2 also comprises the protective cover 4 of elastic body 9, and said elastic body 9 is provided with the threaded hole 12 that is used to install protective cover 4; Protective cover 4 is fixed on the elastic body 9 through the web member 5 that adapts with said threaded hole 12.
Said sensor 2 also comprises introduces/goes out the fairlead 7 that lead is used, and offers the through hole 14 that is used to settle said fairlead 7 on the said elastic body 9.
Said each mounting bracket 3, elastic body 9 are symmetrical structure, and wherein each mounting hole 11 and strainometer all are in the plane of symmetry 61 positions of elastic body 9, and the plane of symmetry 61 of each mounting bracket 3, elastic body 9 is all concordant with tested person structure neutral surface 62.
For better protection strainometer and stress breach 13, the special corresponding protection housing 8 that on elastic body 9, is provided with.Wherein elastic body 9 is selected alloy steel material for use, and strainometer adopts resistance strain gage.
For a person skilled in the art, under the prerequisite that does not break away from structure of the present invention, can also make some distortion and improvement, these also should be regarded as protection scope of the present invention, and these can not influence effect and practical applicability that the present invention implements.
Claims (5)
1. the strain gauge transducer of a measurement structure amount of deflection is fixed on the tested person structural table wall, and wherein the tested person structure is the beam body, it is characterized in that:
Said sensor comprises elastic body and is located at strainometer, metering circuit and the respective wire in the elastic body that said elastic body is provided with the mounting hole that is distributed in the strainometer both sides;
Also comprise mounting bracket, one of which end and tested person structure weld together, and the other end passes said mounting hole and is fixed on the mounting hole place by self-locking nut, and wherein said mounting bracket is corresponding one by one with mounting hole;
Said elastic body is fixed on the neutral surface position of tested person structure through mounting bracket.
2. the strain gauge transducer of measurement structure amount of deflection according to claim 1, it is characterized in that: also comprise elastomeric protective cover, said elastic body is provided with the threaded hole that is used to install protective cover; Protective cover is fixed on the elastic body through the web member that adapts with said threaded hole.
3. the strain gauge transducer of measurement structure amount of deflection according to claim 1 is characterized in that: also comprise introducing/go out the fairlead that lead is used, offer the through hole that is used to settle said fairlead on the said elastic body.
4. the strain gauge transducer of measurement structure amount of deflection according to claim 1 is characterized in that: said strainometer is other to be provided with elastomeric stress breach.
5. the strain gauge transducer of measurement structure amount of deflection according to claim 1; It is characterized in that: said each mounting bracket, elastic body are symmetrical structure; Wherein each mounting hole and strainometer all are in elastomeric plane of symmetry position, and each mounting bracket, the elastomeric plane of symmetry are all concordant with the neutral surface of tested person structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247467A CN102323022A (en) | 2011-08-26 | 2011-08-26 | A kind of strain gauge transducer of measurement structure amount of deflection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110247467A CN102323022A (en) | 2011-08-26 | 2011-08-26 | A kind of strain gauge transducer of measurement structure amount of deflection |
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| CN102323022A true CN102323022A (en) | 2012-01-18 |
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| CN201110247467A Pending CN102323022A (en) | 2011-08-26 | 2011-08-26 | A kind of strain gauge transducer of measurement structure amount of deflection |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759632A (en) * | 2014-01-25 | 2014-04-30 | 重庆大唐科技股份有限公司 | Stress type sensor for measuring structural deflection |
| CN106564217A (en) * | 2016-10-26 | 2017-04-19 | 东南大学 | Intelligent sandwich panel |
| CN107462147A (en) * | 2017-07-24 | 2017-12-12 | 哈尔滨汽轮机厂有限责任公司 | A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely |
| CN108709492A (en) * | 2018-08-24 | 2018-10-26 | 霍丁格包尔文(苏州)电子测量技术有限公司 | A kind of hermetically sealed strain gauge transducer |
| CN110307955A (en) * | 2019-07-19 | 2019-10-08 | 中南大学 | Well hole car load bearing beam elasticity dynamic deflection measurement method and system based on multiple spot strain perception |
| CN111779925A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Bridge bottom measuring part mounting equipment |
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| CN202255273U (en) * | 2011-08-26 | 2012-05-30 | 重庆大唐科技股份有限公司 | Strain transducer for measuring structure flexibility |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103759632A (en) * | 2014-01-25 | 2014-04-30 | 重庆大唐科技股份有限公司 | Stress type sensor for measuring structural deflection |
| CN106564217A (en) * | 2016-10-26 | 2017-04-19 | 东南大学 | Intelligent sandwich panel |
| CN107462147A (en) * | 2017-07-24 | 2017-12-12 | 哈尔滨汽轮机厂有限责任公司 | A kind of Turbo-generator Set real cylinder deflection metrology method of real cylinder half entirely |
| CN108709492A (en) * | 2018-08-24 | 2018-10-26 | 霍丁格包尔文(苏州)电子测量技术有限公司 | A kind of hermetically sealed strain gauge transducer |
| CN110307955A (en) * | 2019-07-19 | 2019-10-08 | 中南大学 | Well hole car load bearing beam elasticity dynamic deflection measurement method and system based on multiple spot strain perception |
| CN111779925A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Bridge bottom measuring part mounting equipment |
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Application publication date: 20120118 |