CN2669133Y - Double cantilever concrete structure strain measuring meter - Google Patents
Double cantilever concrete structure strain measuring meter Download PDFInfo
- Publication number
- CN2669133Y CN2669133Y CNU200320109969XU CN200320109969U CN2669133Y CN 2669133 Y CN2669133 Y CN 2669133Y CN U200320109969X U CNU200320109969X U CN U200320109969XU CN 200320109969 U CN200320109969 U CN 200320109969U CN 2669133 Y CN2669133 Y CN 2669133Y
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- spring piece
- left spring
- right spring
- spring leaf
- spring sheet
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Abstract
The utility model discloses a double cantilever concrete structure strain measuring meter. The upper end of a shell is provided with an upper end cover, and the lower end is provided with a lower end cover. A left spring piece and a right spring piece are arranged in the shell. An upper cushion block and a lower cushion block are provided between the left spring piece and the right spring piece, and the upper parts of the left spring piece and the right spring piece are arranged in the clamp block of a fixing end below the left end cover. 2-16 strain pieces connected with output conducting wires are arranged on the left spring piece and the right spring piece. One end of a dowel steel plugged in the shell and outside and sheathed with a limit ring is arranged on the left spring piece and the right spring piece, and the other end is arranged on a right support. A left support is arranged on the lower end cover. The utility model has the advantages of high sensibility, easy standardization, small linearity error, good long-term stability, adjustable gauge length, low production cost, strong moisture prevention ability, stable signal output, convenient use, etc. When the double cantilever measuring meter of the strain of the concrete structure is connected with a strain gauge, the stain of concrete components can be tested.
Description
Technical field
The utility model belongs to the equipment technical field of measuring relative displacement, is specifically related to two cantilever xoncrete structure strain measurement meters.
Background technology
In bridge and the detection of various building structure construction quality, service life assessment, the disease analysis of causes, new structural shape experimental study, strain normally needs one of Main physical amount of observing.The concrete strain meter that measurement concrete structure strain is at present adopted mainly contains two kinds.A kind of is foil gauge, during use foil gauge is directly sticked on the detected position of structures.Work such as paster, bonding wire, mounting are usually carried out in the high-altitude of several meters and even tens meters, and difficulty is bigger, and quality is difficult to guarantee, efficient is quite low, and measured value influenced by environment temperature and ambient humidity very big, often the drift of the measured value of some point is very big, measurement data is with a low credibility.Another is arc strainometer, the primary structure of this strainometer is to be bonded with foil gauge on the bigger and thick arcuate bombing leaf of a slice volume ratio, arcuate bombing leaf needs special metal die to make, processed complex, the production cost height, the stiffness of arcuate bombing leaf is big, and is influential to the strain on sensor component surface, the data out of true of being demarcated, poor stability.Particularly this strainometer two ends all stick on the bearing, can not take off two end bearings simultaneously during dismounting, thereby cause the strainometer sensitive part stressed very big, and strainometer is impaired easily, cause correction factor to change, and make measuring result error bigger.
Summary of the invention
Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned concrete strain meter, provide a kind of reasonable in design, highly sensitive, be easy to demarcate, linear error is little, normal phase good stability, gauge length is adjustable, production cost is lower, the scope of application is wider Xtah Crude Clay structure strain measurement meter.
Solving the problems of the technologies described above the technical scheme that is adopted is: the upper end in housing is provided with upper end cover, the lower end is provided with bottom end cover, in housing, be provided with left spring sheet and right spring leaf, be provided with cushion block and lower cushion block between left spring sheet and the right spring leaf, the top of left spring sheet and right spring leaf is arranged in the stiff end fixture block under the upper end cover, the left spring sheet is provided with 2～16 foil gauges that are connected with output lead with right spring leaf, an end that interts in the housing and be set with the transmission rod of spacing collar outward is arranged on left spring sheet and the right spring leaf, the other end is arranged on the right support abutment, and bottom end cover is provided with left support abutment.
Foil gauge of the present utility model has the even number sheet.Strain bar of the present utility model comprises auxiliary connecting rod and connecting rod, and an end of auxiliary connecting rod connects with an end of connecting rod, and the other end of auxiliary connecting rod is arranged on left spring sheet and the right spring leaf, and the other end of connecting rod is arranged on the right support abutment.
The thickness of left spring sheet of the present utility model and right spring leaf is 0.2～1mm, and the length of left spring sheet and right spring leaf is 15～100mm, and the distance between left spring sheet and the right spring leaf is 0.5～10mm.
The utility model is compared with available coagulation soil strain measurement meter, two Compression and Expansion distortion of experiencing concrete component than thin spring leaf have been adopted, two thin spring leafs are provided with 2～16 foil gauges, sensitivity of the present utility model is improved a lot, the self compensation of temperature energy, be convenient to sealing, humidity-proof ability improved greatly, stable output signal.Housing is installed on the left support abutment, and transmission rod adopts auxiliary connecting rod to connect formation with connecting rod, and the scene is easy for installation during use, damages sensing element because of beaing bearing when having avoided dismounting.It has highly sensitive, be easy to demarcation, little, the normal phase good stability of linear error, gauge length is adjustable, production cost is low, applied widely, humidity-proof ability strong, stable output signal, advantage such as easy to use, it can detect the strain of concrete component with after strainmeter is connected.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.
In Fig. 1, two cantilever xoncrete structure strain measurement meters of present embodiment by housing 1, upper end cover 2, left spring sheet 3, output lead 4, go up cushion block 5, go up foil gauge 6, stiff end fixture block 7, right spring leaf 8, foil gauge 9, auxiliary connecting rod 10, spacing collar 11, right support abutment 12, restraint screw 13, connecting rod 14, lower cushion block 15, bottom end cover 16, left support abutment 17, nut 18 connect and constitute down.
Upper end in housing 1 is equipped with upper end cover 2, the lower end is equipped with bottom end cover 16, one side of the symmetrical center line in housing 1 is equipped with left spring sheet 3, opposite side is equipped with right spring leaf 8, left spring sheet 3 and right spring leaf 8 are used to experience the relative displacement of concrete component, and generation deformation, on between left spring sheet 3 and the right spring leaf 8 cushion block 5 is installed, under lower cushion block 15 is installed, the top of left spring sheet 3 and right spring leaf 8 is inserted and secured in the stiff end fixture block 7, stiff end fixture block 7 is installed in upper end cover 2 bottoms, the thickness of left spring sheet 3 and right spring leaf 8 is 0.6mm, the length of left spring sheet 3 and right spring leaf 8 is 60mm, and the distance between left spring sheet 3 and the right spring leaf 8 is 5mm.By changing left spring sheet 3 and the thickness of right spring leaf 8 or the length of left spring sheet 3 and right spring leaf 8, adjust output sensitivity of the present utility model and strain measurement scope at an easy rate, can produce the concrete strain meter of various different resolutions.Be bonded with foil gauge 6 on the lateral surface of left spring sheet 3, be bonded with foil gauge 6 on the lateral surface of right spring leaf 8, under the lateral surface of left spring sheet 3, be bonded with foil gauge 9 down, under the lateral surface of right spring leaf 8, be bonded with foil gauge 9 down, also can be bonded on the medial surface of left spring sheet 3 and right spring leaf 8 going up foil gauge 6 and following foil gauge 9, last foil gauge 6 is connected with output lead 4 with following foil gauge 9, and last foil gauge 6 and following foil gauge 9 are exported the distortion that left spring sheet 3 and right spring leaf 8 are taken place through output lead 4.The bottom of left spring sheet 3 and right spring leaf 8 is equipped with auxiliary connecting rod 10 by thread connection in housing 1, the right-hand member of auxiliary connecting rod 10 is processed with internal thread, left end are fixed on left spring sheet 3 and right spring leaf 8 with nut 18 bottom, the right-hand member of auxiliary connecting rod 10 stretches out outside the right flank of housing 1, be set with spacing collar 11 in the right side of auxiliary connecting rod 10, spacing collar 11 is used to limit left spring sheet 3 and right spring leaf 8 moves right within the specific limits.At the right-hand member of auxiliary connecting rod 10 connecting rod 14 that has been fixed by threaded connection, the right-hand member of connecting rod 14 is installed on the right support abutment 12, and restraint screw 13 is installed on right support abutment 12, and restraint screw 13 is used for relatively moving of restraint connecting rod 14 and bearing 12.On the outer face of bottom end cover 16, left support abutment 17 is installed, when left support abutment 17 and right support abutment 12 are used to measure the strain of building member, left support abutment 17 and right support abutment 12 sticked with glue are connected on the detected concrete member by thread connection.When surface of concrete structure produces stretching or compression deformation, relative displacement takes place between left support abutment 17 and the right support abutment 12, by connecting rod 14 left spring sheet 3 and right spring leaf 8 are deformed, the last foil gauge 6 and the following foil gauge 9 that are bonded in the left spring sheet 3 and right spring leaf 8 outsides are experienced left spring sheet 3 and right spring leaf 8 distortion sizes, output to strainmeter through output lead 4, by calibration coefficient, can measure the strain value at the tested position of concrete component.
In the present embodiment, be bonded with foil gauge 6 on 1 on the lateral surface of left spring sheet 3, be bonded with foil gauge 6 on 1 on the lateral surface of right spring leaf 8, last foil gauge 6 is connected with output lead 4.The thickness of left spring sheet 3 and right spring leaf 8 is 0.2mm, and the length of left spring sheet 3 and right spring leaf 8 is 15mm, and the distance between left spring sheet 3 and the right spring leaf 8 is 0.5mm.The connecting relation of other parts and parts is identical with embodiment 1.
In the present embodiment, be bonded with foil gauge 6 and 4 following foil gauges 9 on 4 on the lateral surface of left spring sheet 3, be bonded with foil gauge 6 and 4 following foil gauges 9 on 4 on the lateral surface of right spring leaf 8, last foil gauge 6 is connected with output lead 4 with following foil gauge 9.The thickness of left spring sheet 3 and right spring leaf 8 is 1mm, and the length of left spring sheet 3 and right spring leaf 8 is 100mm, and the distance between left spring sheet 3 and the right spring leaf 8 is 10mm.The connecting relation of other parts and parts is identical with embodiment 1.
Claims (3)
1, a kind of pair of cantilever xoncrete structure strain measurement meter, it is characterized in that: the upper end in housing [1] is provided with upper end cover [2], the lower end is provided with bottom end cover [16], in housing [1], be provided with left spring sheet [3] and right spring leaf [8], be provided with cushion block [5] and lower cushion block [15] between left spring sheet [3] and the right spring leaf [8], the top of left spring sheet [3] and right spring leaf [8] is arranged in the stiff end fixture block [7] under the upper end cover [2], left spring sheet [3] is provided with 2～16 foil gauges that are connected with output lead [4] with right spring leaf [8], an end that interts in the housing [1] and be set with the transmission rod of spacing collar [11] outward is arranged on left spring sheet [3] and the right spring leaf [8], the other end is arranged on the right support abutment [12], and bottom end cover [16] is provided with left support abutment [17].
2, according to said pair of cantilever xoncrete structure of claim 1 strain measurement meter, it is characterized in that: said foil gauge has the even number sheet; Said strain bar comprises auxiliary connecting rod [10] and connecting rod [14], one end of auxiliary connecting rod [10] connects with an end of connecting rod [14], the other end of auxiliary connecting rod [10] is arranged on left spring sheet [3] and the right spring leaf [8], and the other end of connecting rod [14] is arranged on the right support abutment [12].
3, according to claim] [or 2 said pairs of cantilever xoncrete structure strain measurement meters, it is characterized in that: the thickness of said left spring sheet [3] and right spring leaf [8] is 0.2～1mm, the length of left spring sheet [3] and right spring leaf [8] is 15～100mm, and the distance between left spring sheet [3] and the right spring leaf [8] is 0.5～10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200320109969XU CN2669133Y (en) | 2003-12-19 | 2003-12-19 | Double cantilever concrete structure strain measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200320109969XU CN2669133Y (en) | 2003-12-19 | 2003-12-19 | Double cantilever concrete structure strain measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2669133Y true CN2669133Y (en) | 2005-01-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200320109969XU Expired - Fee Related CN2669133Y (en) | 2003-12-19 | 2003-12-19 | Double cantilever concrete structure strain measuring meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2669133Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868443A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Device for measuring opening degree of sealing faces of flanges |
| CN104482854A (en) * | 2014-12-15 | 2015-04-01 | 中国矿业大学 | Array radial deformation sensor |
| CN108844514A (en) * | 2018-05-04 | 2018-11-20 | 中国水利水电科学研究院 | Strain gauge and the unstressed strain gauge means of fully graded concrete |
| CN111780708A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain gauge |
| CN111780792A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Method for mounting measuring piece for bridge detection |
| CN111780707A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain measuring device |
| CN113029774A (en) * | 2020-06-06 | 2021-06-25 | 河南交院工程技术有限公司 | Sensor support and sensor device using same |
| CN113019811A (en) * | 2020-06-06 | 2021-06-25 | 河南交院工程技术有限公司 | Sensor device and sensor support thereof |
-
2003
- 2003-12-19 CN CNU200320109969XU patent/CN2669133Y/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103868443A (en) * | 2014-03-21 | 2014-06-18 | 中国船舶重工集团公司第七○二研究所 | Device for measuring opening degree of sealing faces of flanges |
| CN103868443B (en) * | 2014-03-21 | 2017-01-18 | 中国船舶重工集团公司第七○二研究所 | Device for measuring opening degree of sealing faces of flanges |
| CN104482854A (en) * | 2014-12-15 | 2015-04-01 | 中国矿业大学 | Array radial deformation sensor |
| CN104482854B (en) * | 2014-12-15 | 2017-05-17 | 中国矿业大学 | Array radial deformation sensor |
| CN108844514A (en) * | 2018-05-04 | 2018-11-20 | 中国水利水电科学研究院 | Strain gauge and the unstressed strain gauge means of fully graded concrete |
| CN111780708A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain gauge |
| CN111780792A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Method for mounting measuring piece for bridge detection |
| CN111780707A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain measuring device |
| CN113029774A (en) * | 2020-06-06 | 2021-06-25 | 河南交院工程技术有限公司 | Sensor support and sensor device using same |
| CN113019811A (en) * | 2020-06-06 | 2021-06-25 | 河南交院工程技术有限公司 | Sensor device and sensor support thereof |
| CN111780707B (en) * | 2020-06-06 | 2021-12-14 | 河南交院工程技术集团有限公司 | Strain measuring device |
| CN111780708B (en) * | 2020-06-06 | 2021-12-14 | 河南交院工程技术集团有限公司 | Strain gauge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |