CN202255273U - Strain transducer for measuring structure flexibility - Google Patents
Strain transducer for measuring structure flexibility Download PDFInfo
- Publication number
- CN202255273U CN202255273U CN2011203142133U CN201120314213U CN202255273U CN 202255273 U CN202255273 U CN 202255273U CN 2011203142133 U CN2011203142133 U CN 2011203142133U CN 201120314213 U CN201120314213 U CN 201120314213U CN 202255273 U CN202255273 U CN 202255273U
- Authority
- CN
- China
- Prior art keywords
- elastic body
- strain gauge
- tested person
- deflection
- strainometer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000007935 neutral effect Effects 0.000 claims abstract description 12
- 230000001681 protective effect Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 abstract description 4
- 229920001971 elastomer Polymers 0.000 abstract 4
- 239000000806 elastomer Substances 0.000 abstract 4
- 230000007547 defect Effects 0.000 abstract 1
- 238000011897 real-time detection Methods 0.000 abstract 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 238000002910 structure generation Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
- Measurement Of Force In General (AREA)
Abstract
The utility model discloses a strain transducer for measuring structure flexibility, fixed on a surface wall of a structure to be measured and comprising an elastomer and a strain gauge installed in the elastomer; the elastomer is provided with installing holes distributed on two sides of the strain gauge; the strain transducer also comprises installation racks, one ends of which are welded with the structure to be measured and the other ends traverse the installing holes to be fixed in the installing holes by self-locking nuts, wherein the installation racks are corresponding with the installing holes; the elastomer is fixed at a neutral surface position of the structure to be measured through the installation racks. The strain transducer overcomes the technical defects that a sensor of prior arts can not perform real time detection on beams and can raise the measurement accuracy of the sensor and prolong a service life of the sensor.
Description
Technical field
The utility model belongs to the strain-type sensory field, is specifically related to a kind of amount of deflection of detection architecture beam or reaches 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.
The utility model content
The technical matters that the utility model 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 utility model 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 the utility model measurement structure beam deflection, 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 the utility model technical scheme is further specified:
Fig. 1 is the view of strain gauge transducer before the deformation of tested person structure generation amount of deflection of the utility model measurement structure amount of deflection.
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 strain gauge transducer of the utility model measurement structure amount of deflection.
Fig. 4 is the structural representation with the strain gauge transducer of the corresponding the utility model measurement structure of Fig. 3 amount of deflection.(not drawing protective cover)
Fig. 5 is the plan structure synoptic diagram with the strain gauge transducer of the corresponding the utility model measurement structure of Fig. 4 amount of deflection.
Fig. 6 is the side-looking structural representation with the strain gauge transducer of the corresponding the utility model measurement structure of Fig. 4 amount of deflection.
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 the utility model measurement structure amount of deflection 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 the utility model structure; Can also make some distortion and improvement, these also should be regarded as the protection domain of the utility model, and these can not influence effect and practical applicability that the utility model is implemented.
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 |
|---|---|---|---|
| CN2011203142133U CN202255273U (en) | 2011-08-26 | 2011-08-26 | Strain transducer for measuring structure flexibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203142133U CN202255273U (en) | 2011-08-26 | 2011-08-26 | Strain transducer for measuring structure flexibility |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202255273U true CN202255273U (en) | 2012-05-30 |
Family
ID=46116502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203142133U Expired - Lifetime CN202255273U (en) | 2011-08-26 | 2011-08-26 | Strain transducer for measuring structure flexibility |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202255273U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323022A (en) * | 2011-08-26 | 2012-01-18 | 重庆大唐科技股份有限公司 | A kind of strain gauge transducer of measurement structure amount of deflection |
| 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 |
-
2011
- 2011-08-26 CN CN2011203142133U patent/CN202255273U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102323022A (en) * | 2011-08-26 | 2012-01-18 | 重庆大唐科技股份有限公司 | A kind of strain gauge transducer of measurement structure amount of deflection |
| 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 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Strain sensor for measuring structural deflection Effective date of registration: 20121017 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2012990000610 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20131025 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2012990000610 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Strain sensor for measuring structural deflection Effective date of registration: 20131025 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2013990000789 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20141118 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2013990000789 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Strain sensor for measuring structural deflection Effective date of registration: 20141119 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2014990000959 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20151130 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2014990000959 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Strain sensor for measuring structural deflection Effective date of registration: 20151208 Granted publication date: 20120530 Pledgee: Chongqing Sanxia bank Limited by Share Ltd New District Branch Pledgor: Chongqing Datang Technology Co., Ltd.|Chongqing Datang Control Technology Co., Ltd. Registration number: 2015990001078 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
|
| CX01 | Expiry of patent term |