CN201772973U - Automatic stress calibrator - Google Patents
Automatic stress calibrator Download PDFInfo
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- CN201772973U CN201772973U CN2010202410351U CN201020241035U CN201772973U CN 201772973 U CN201772973 U CN 201772973U CN 2010202410351 U CN2010202410351 U CN 2010202410351U CN 201020241035 U CN201020241035 U CN 201020241035U CN 201772973 U CN201772973 U CN 201772973U
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Abstract
The utility model relates to an automatic stress calibrator, which is characterized by comprising a stress measuring dial-gauge device and a stress measuring clip-on extensometer device. The stress measuring dial-gauge device comprises a left base, a left lock nut, a left body, a dial gauge, a left lock screw, a fine adjustment bolt, a fine adjustment nut, an ejector rod, a right lock nut, a right body, a right lock nut and a right base. The stress measuring clip-on extensometer comprises a left blade, a clip-on extensometer and a right blade, wherein the left blade is sleeved on a left screw stem of the left base through a left adjusting orifice-sleeve, the left lock nut is arranged under the left blade, the right blade is sleeved on a right screw stem of the right base via a right adjusting orifice-sleeve, the right lock nut is arranged under the right blade, a notch of a left elastic plate of the clip-on extensometer is hitched to the right end of the left blade, and a notch of a right elastic plate of the clip-on extensometer is hitched to the left end of the right blade. The automatic stress calibrator has the advantage of high reliability.
Description
Technical field
The utility model relates to a kind of stress self-correcting instrument.Stress self-correcting instrument is adapted to the strain of various members and measures for a long time; Be adapted to the monitoring of bridge in building course, the one-tenth bridge of bridge detects; The loading test of member and the check of product etc.
Background technology
Electric measurement technique of strain gage uses comparative maturity at present.But major part is used for small strain and short-term test.Detect for big strain and long-term health, just must applied stress self-correcting instrument.Each passage of self-correcting instrument all carries a strain from school regulations, is installed in from school regulations on the member of structure to carry out strain measurement.The construction time of bridge is generally all long, and use foil gauge monitoring, its measuring accuracy will be subjected to very big influence this moment again.And the use of foil gauge is disposable.
Summary of the invention
The stress self-correcting instrument that provides a kind of reliability high is provided the purpose of this utility model.
For achieving the above object, technical solution adopted in the utility model is: stress self-correcting instrument is characterized in that it comprises that clock gauge surveys strain device and the folder formula instrumentation strain device of extending; Described clock gauge is surveyed strain device and is comprised left base, left set nut, left main body, clock gauge, left lock-screw, trimming bolt, fine-tuning nut, push rod, right lock-screw, right main body, right set nut, right base, the top of left side main body is provided with measures the guide rod fixed orifice, the upper end of left side main body is provided with left side locking screw, locking screw in a left side is connected with measurement guide rod fixed orifice, the right part of the measurement guide rod of clock gauge is passed and is measured the guide rod fixed orifice, left side lock-screw screws in the left side locking screw, and the measurement guide rod of clock gauge is pushed down in the lower end of left lock-screw; The lower end of left side main body is provided with left screw hole, and the top of left base is left screw rod, is rotary with left set nut on the left screw rod, and the upper end of the left screw rod of left base screws in the left screw hole, and left base is fixed with to be measured; Right main body is positioned at the right side of left main body, the top of right main body is provided with the push rod fixed orifice, the upper end of right main body is provided with right locking screw, right locking screw is connected with the push rod fixed orifice, the push rod fixed orifice is passed in the right part of push rod, right lock-screw screws in the right locking screw, and push rod is pushed down in the lower end of right lock-screw; The lower end of right main body is provided with right screw hole, and the top of right base is right screw rod, is rotary with right set nut on the right screw rod, and the upper end of the right screw rod of right base screws in the right screw hole, and right base is fixed with to be measured; The left end of push rod is provided with the trimming bolt hole, is rotary with fine-tuning nut on the trimming bolt, and the right part of trimming bolt screws in the trimming bolt hole, and the left end of trimming bolt contacts with the surveyingpin of clock gauge;
The described folder formula instrumentation strain device of extending comprises left blade, folder formula extensometer, right blade, the left part of left side blade is provided with a left side and adjusts the hole, left side blade is adjusted borehole jack on the left screw rod of left base by a left side, left side set nut is positioned at the below of left blade, the right part of right blade is provided with the right hole of adjusting, right blade is adjusted borehole jack on the right screw rod of right base by the right side, right set nut is positioned at the below of right blade, the notch of the left flexure strip of folder formula extensometer hangs on the right-hand member of left blade, and the notch of the right flexure strip of folder formula extensometer hangs on the left end of right blade.
The beneficial effects of the utility model are: adopt clock gauge to survey strain device and the folder formula instrumentation strain device of extending, two covering devices are tested (self-correcting simultaneously) simultaneously, have increased the degree of confidence of test data, the utlity model has high reliability features.
The utility model has solved monitors the problem of monitoring with the strain long term monitoring in the building course that satisfies bridge for a long time to member.Should can repeat to install and use by power self-correcting instrument, cost is low, and is easy to use, and test data is reliable, uses face width.Can be widely used in the one-tenth bridge detection of bridge monitoring monitoring and bridge, the strain testing of building element etc.And should power self-correcting instrument from small strain, component damage, crackle, crack propagation appear until component damage, all can be with testing by power self-correcting instrument; The test strain can directly demonstrate the stress of member through collection transition card, computer program in the data box.Stress self-correcting instrument is that stress and the stress ratio on the computing machine that elastic modulus is multiply by in strain that clock gauge is surveyed carried out self-correcting, to increase reliability, the degree of confidence of test data.Can under various complex environments, measure,, can reduce the influence of environment sensing element because strain can be carried out clamping at any time from school regulations.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is along the cut-open view of A-A line among Fig. 1;
Fig. 3 is along the cut-open view of B-B line (only left blade being analysed and observe) among Fig. 1;
Fig. 4 is the enlarged drawing of C portion among Fig. 1;
Fig. 5 is the with protecting cover synoptic diagram of the utility model;
Among the figure: 1-left side base, 2-left side set nut, 3-left side blade, 4-left side main body, the 5-clock gauge, 6-left side lock-screw, 7-trimming bolt, 8-fine-tuning nut, 9-folder formula extensometer, 10-push rod, the right lock-screw of 11-, the right main body of 12-, the right blade of 13-, the right set nut of 14-, the right base of 15-, many jacks of 16-capture card, the 17-main frame, 18-left side flexure strip, the right flexure strip of 19-, the 20-protective cover, 21-connecting pin, to be measured of 22-.
Embodiment
As Fig. 1, Fig. 2, Fig. 3, shown in Figure 4, stress self-correcting instrument, it comprises that clock gauge surveys strain device and the folder formula instrumentation strain device of extending; Described clock gauge is surveyed strain device and is comprised left base 1, left side set nut 2, left side main body 4, clock gauge 5, left side lock-screw 6, trimming bolt 7, fine-tuning nut 8, push rod 10, right lock-screw 11, right main body 12, right set nut 14, right base 15, the top of left side main body 4 is provided with measures the guide rod fixed orifice, the upper end of left side main body 4 is provided with left side locking screw, left side locking screw with measure guide rod fixed orifice be connected (axis of left side locking screw is vertical mutually with the axis of measurement guide rod fixed orifice), the right part of the measurement guide rod of clock gauge is passed and is measured guide rod fixed orifice (right part of measurement guide rod is positioned at the right side of left main body 4), left side lock-screw 6 screws in the left side locking screw, and the measurement guide rod of (locking) clock gauge is pushed down in the lower end of left lock-screw 6; The lower end of left side main body 4 is provided with left screw hole, and the top of left base 1 is left screw rod, is rotary with left set nut 2 on the left screw rod, and the upper end of the left screw rod of left base 1 screws in the left screw hole and (is threaded), and left base 1 is fixing with to be measured 22; Right main body 12 is positioned at the right side of left main body 4, the top of right main body 12 is provided with the push rod fixed orifice, the upper end of right main body 12 is provided with right locking screw, right locking screw be connected with the push rod fixed orifice (right axis of locking screw is vertical mutually with the axis of push rod fixed orifice), push rod fixed orifice (right part of push rod 10 is positioned at the right side of right main body 12) is passed in the right part of push rod 10, right lock-screw 11 screws in the right locking screw, and (locking) push rod 10 is pushed down in the lower end of right lock-screw 11; The lower end of right main body 12 is provided with right screw hole, and the top of right base 15 is right screw rod, is rotary with right set nut 14 on the right screw rod, and the upper end of the right screw rod of right base 15 screws in the right screw hole and (is threaded), and right base 15 is fixing with to be measured 22; The left end of push rod 10 is provided with the trimming bolt hole, is rotary with (being threaded) fine-tuning nut 8 on the trimming bolt 7, and the right part of trimming bolt 7 screws in the trimming bolt hole (being threaded), and the left end of trimming bolt 7 contacts with the surveyingpin of clock gauge 5;
The described folder formula instrumentation strain device of extending comprises left blade 3, folder formula extensometer 9, right blade 13, the left part of left side blade 3 is provided with a left side and adjusts hole (displacement adjustment), left side blade 3 is adjusted borehole jack on the left screw rod of left base 1 by a left side, left side set nut 2 is positioned at the below (left set nut 2 is locked at left blade 3 on the left main body 4) of left blade 3, the right part of right blade 13 is provided with the right hole of adjusting, right blade 13 is adjusted borehole jack on the right screw rod of right base 15 by the right side, right set nut 14 is positioned at the below (right set nut 14 is locked at right blade 13 on the right main body 12) of right blade 13, the notch of the left flexure strip 18 of folder formula extensometer 9 hangs on the right-hand member of left blade 3, and the notch of the right flexure strip 19 of folder formula extensometer 9 hangs on the left end of right blade 13.
The signal input line of described folder formula extensometer 9 links to each other with many jacks capture card 16, and many jacks capture card 16 inserts in the slot of main frame (microcomputer) 17.
As shown in Figure 5, described left base 1, left set nut 2, left main body 4, clock gauge 5, left lock-screw 6, trimming bolt 7, fine-tuning nut 8, push rod 10, right lock-screw 11, right main body 12, right set nut 14, right base 15 all are positioned at protective cover 20, and protective cover 20 is connected with left base 1 plug-in type by connecting pin 21.
Distance between described left main body 4 and the right main body 12 is 200mm.
Described left blade 3, right blade 13 are the L type.
Using method is: at first determine the position that member (to be measured 22) will detect, will detect the position such as box girder bridge and be L/2,3L/8, L/4, reach bridge pier, just install stress self-correcting instrument in these bottoms, cross section, to detect its stress intensity.
Transfer that gauge length is 200mm between left main body 4 and the right main body 12, the measurement guide rod of requirement clock gauge and push rod 10 are on same axial line, tighten with left lock-screw 6 and right lock-screw 11, when adjusting to gauge length 10mm between left blade 3 and the right blade 13, tighten up with left set nut 2 and right set nut 14.After being ready to, left base 1 and right base 15 are bonded on the member that will survey stress (to be measured 22, the direction of two base axial lines is consistent with the direction of test stress), left lock-screw 6 and right lock-screw 11 are unclamped, with right lock-screw 11 push rod 10 is tightened up after debugging state shown in Figure 1.Again clock gauge is pushed up on the trimming bolt 7, and tighten up with the measurement guide rod of left lock-screw 6 after depressing 0.5mm clock gauge.To press from both sides formula extensometer 9 again, be installed in by (left blade 3 and right blade 13) on the edge of a knife that gauge length is 10mm.Again protective cover 20 is covered (protective cover 20 is for transparent) afterwards, and lock with connecting pin 21.When test member loaded, strain signal was by capture card, main frame (computing machine), video data and figure on computers.The displacement increment of reading on the clock gauge is the strain value that clock gauge is surveyed divided by gauge length, and strain value multiply by the construction material elastic feel quantity and is member measuring point stress.And compare with strain (stress) value that folder formula extensometer is surveyed, to reach the purpose of strain stress self-correcting.
Claims (5)
1. stress self-correcting instrument is characterized in that it comprises that clock gauge surveys strain device and the folder formula instrumentation strain device of extending; Described clock gauge is surveyed strain device and is comprised left base (1), left side set nut (2), left side main body (4), clock gauge (5), left side lock-screw (6), trimming bolt (7), fine-tuning nut (8), push rod (10), right lock-screw (11), right main body (12), right set nut (14), right base (15), the top of left side main body (4) is provided with measures the guide rod fixed orifice, the upper end of left side main body (4) is provided with left side locking screw, locking screw in a left side is connected with measurement guide rod fixed orifice, the right part of the measurement guide rod of clock gauge is passed and is measured the guide rod fixed orifice, left side lock-screw (6) screws in the left side locking screw, and the measurement guide rod of clock gauge is pushed down in the lower end of left lock-screw (6); The lower end of left side main body (4) is provided with left screw hole, and the top of left base (1) is left screw rod, is rotary with left set nut (2) on the left screw rod, and the upper end of the left screw rod of left base (1) screws in the left screw hole, and left base (1) is fixing with to be measured (22); Right main body (12) is positioned at the right side of left main body (4), the top of right main body (12) is provided with the push rod fixed orifice, the upper end of right main body (12) is provided with right locking screw, right locking screw is connected with the push rod fixed orifice, the push rod fixed orifice is passed in the right part of push rod (10), right lock-screw (11) screws in the right locking screw, and push rod (10) is pushed down in the lower end of right lock-screw (11); The lower end of right main body (12) is provided with right screw hole, and the top of right base (15) is right screw rod, is rotary with right set nut (14) on the right screw rod, and the upper end of the right screw rod of right base (15) screws in the right screw hole, and right base (15) is fixing with to be measured (22); The left end of push rod (10) is provided with the trimming bolt hole, is rotary with fine-tuning nut (8) on the trimming bolt (7), and the right part of trimming bolt (7) screws in the trimming bolt hole, and the left end of trimming bolt (7) contacts with the surveyingpin of clock gauge (5);
The described folder formula instrumentation strain device of extending comprises left blade (3), folder formula extensometer (9), right blade (13), the left part of left side blade (3) is provided with a left side and adjusts the hole, left side blade (3) is adjusted borehole jack on the left screw rod of left base (1) by a left side, left side set nut (2) is positioned at the below of left blade (3), the right part of right blade (13) is provided with the right hole of adjusting, right blade (13) is adjusted borehole jack on the right screw rod of right base (15) by the right side, right set nut (14) is positioned at the below of right blade (13), the notch of the left flexure strip (18) of folder formula extensometer (9) hangs on the right-hand member of left blade (3), and the notch of the right flexure strip (19) of folder formula extensometer (9) hangs on the left end of right blade (13).
2. stress self-correcting instrument according to claim 1 is characterized in that: the signal input line of described folder formula extensometer (9) links to each other with many jacks capture card (16), and many jacks capture card (16) inserts in the slot of main frame (17).
3. stress self-correcting instrument according to claim 1, it is characterized in that: described left base (1), left set nut (2), left main body (4), clock gauge (5), left lock-screw (6), trimming bolt (7), fine-tuning nut (8), push rod (10), right lock-screw (11), right main body (12), right set nut (14), right base (15) all are positioned at protective cover (20), and protective cover (20) is connected with left base (1) plug-in type by connecting pin (21).
4. stress self-correcting instrument according to claim 1 is characterized in that: the distance between described left main body (4) and the right main body (12) is 200mm.
5. stress self-correcting instrument according to claim 1 is characterized in that: described left blade (3), right blade (13) are the L type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202410351U CN201772973U (en) | 2010-06-30 | 2010-06-30 | Automatic stress calibrator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202410351U CN201772973U (en) | 2010-06-30 | 2010-06-30 | Automatic stress calibrator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201772973U true CN201772973U (en) | 2011-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202410351U Expired - Fee Related CN201772973U (en) | 2010-06-30 | 2010-06-30 | Automatic stress calibrator |
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| Country | Link |
|---|---|
| CN (1) | CN201772973U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102914391A (en) * | 2012-10-19 | 2013-02-06 | 东南大学 | Device for supplying additional in-situ stress to film and measuring method for stress value thereof |
| CN102927959A (en) * | 2012-08-02 | 2013-02-13 | 南京航空航天大学 | Automatic calibration device and calibration method for strain gauge |
| CN111780708A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain gauge |
| CN111780707A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain measuring device |
-
2010
- 2010-06-30 CN CN2010202410351U patent/CN201772973U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927959A (en) * | 2012-08-02 | 2013-02-13 | 南京航空航天大学 | Automatic calibration device and calibration method for strain gauge |
| CN102927959B (en) * | 2012-08-02 | 2016-03-30 | 南京航空航天大学 | Strainmeter self-checking device and calibration steps |
| CN102914391A (en) * | 2012-10-19 | 2013-02-06 | 东南大学 | Device for supplying additional in-situ stress to film and measuring method for stress value thereof |
| CN102914391B (en) * | 2012-10-19 | 2015-01-28 | 东南大学 | Device for supplying additional in-situ stress to film and measuring method for stress value thereof |
| CN111780708A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | Strain gauge |
| CN111780707A (en) * | 2020-06-06 | 2020-10-16 | 河南交院工程技术有限公司 | 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 |
| 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 |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20110323 Termination date: 20110630 |