CN203163675U - Resistor strain type extensometer - Google Patents
Resistor strain type extensometer Download PDFInfo
- Publication number
- CN203163675U CN203163675U CN 201320024080 CN201320024080U CN203163675U CN 203163675 U CN203163675 U CN 203163675U CN 201320024080 CN201320024080 CN 201320024080 CN 201320024080 U CN201320024080 U CN 201320024080U CN 203163675 U CN203163675 U CN 203163675U
- Authority
- CN
- China
- Prior art keywords
- armed
- long
- extensometer
- long arm
- strain type
- 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
- 230000006835 compression Effects 0.000 claims description 11
- 238000007906 compression Methods 0.000 claims description 11
- 238000012360 testing method Methods 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004154 testing of material Methods 0.000 description 1
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a resistor strain type extensometer comprising an upper fixing plate, a lower fixing plate, an upper long arm, and a lower long arm, wherein the upper long arm is mounted at an inner side of the upper fixing plate, the lower arm is mounted at an inner side of the lower fixing plate, an extensometer is mounted between a rear end of the upper long arm and a rear end of the lower long arm, a support rack is mounted between the extensometer and the upper long arm, a U-shaped rack and a T-shaped rack are mounted between a front end of the upper long arm and a front end of the lower long arm, and the U-shaped rack and the T-shaped rack are connected through a positioning pin. The resistor strain type extensometer is characterized in that through the support rack mounted between the lower long arm and the upper long arm, an accurate gauge length position between blades of the extensometer can be guaranteed, and therefore requirement of different gauge length can be satisfied; through the U-shaped rack and the T-shaped rack arranged between the lower long arm and the upper long arm, the U-shaped rack and the T-shaped rack are fixed through the positioning pin, and the upper and lower long arms can be on the fixed gauge length; and the U-shaped rack and the T-shaped rack are not fixed through the positioning pin, the lower and upper long arms can move freely, and therefore zero point errors can be prevented.
Description
Technical field
The utility model belongs to physics class length measurement technique field, and what be specifically related to is a kind of for the resistance-strain type extensometer of measuring the sample axial deformation.
Background technology
Extensometer is a kind of instrument of measuring line distortion between member and other objects at 2, is made up of sensor, amplifier and register three parts usually.Direct and the tested member of sensor contacts.Distance on the member between tested 2 is gauge length, the line that is changed to of gauge length is out of shape, the deformation of member, sensor is along with distortion, and this distortion is converted to information such as machinery, light, electricity, sound, amplifier amplifies the tiny signal of sensor output, and the signal after register (or reader) will amplify directly shows or automatically records.
At present, various metal both domestic and external and nonmetallic material testing machine, all are equipped with folder formula electronic extensometer, this folder formula electronic extensometer often uses two blade sheets of bungee binding on sample, measures the distortion of sample in specified length (gauge length), the elongation of test samples.This electron-like extensometer measuring gage measured length (gauge length) is fixing, and namely different gauge lengths must be equipped with different extensometers.And because the elasticity of bungee is different and the difference of testing crew, can cause test findings that bigger difference is arranged, repeatable accuracy is poor, even inaccurate, inevitably there is off-centre in sample, thereby causes the off-centre of tension test, causes the sample measurement result to have error.
The utility model content
For this reason, the purpose of this utility model is to provide that a kind of clamping is simple, gauge length is variable and the extensometer main body is constant, during identifying, right alignment can identify the resistance-strain type extensometer of eccentric tension influence, with solve the existing clamping inconvenience of current clip formula electronic extensometer, gauge length is immutable, and in right alignment was identified, eccentric tension can produce the problem of big measuring error.
The purpose of this utility model is achieved through the following technical solutions.
A kind of resistance-strain type extensometer, comprise upper mounted plate (1), bottom plate (2), go up long-armed (3) and following long-armed (4), described long-armed (3) are installed in upper mounted plate (1) inboard, long-armed (4) are installed in bottom plate (2) inboard down, described going up between long-armed (3) rear end and following long-armed (4) rear end is equipped with extensometer (8), and support (7) is installed between this extensometer (8) and last long-armed (3); Described going up between long-armed (3) front end and following long-armed (4) front end is equipped with U-shaped frame (5) and T shape frame (6), and connects by register pin (9) between described U-shaped frame (5) and the T shape frame (6).
Preferably, described long-armed (3) front end of is equipped with upper knife edge (11), and following long-armed (4) front end is equipped with down blade (13).
Preferably, cramp frame gripping member (10) is installed in the described upper mounted plate (1), cramp frame gripping member (12) is installed down in the bottom plate (2), the described cramp frame gripping member (10) that goes up is held sample (18) with the middle geometrical clamp of following cramp frame gripping member (12).
Preferably, described extensometer (8) includes and following long-armed (4) underarm (801) that is connected and upper arm (804) that is connected with support (7), be provided with flexure strip (803) in the described underarm (801), the flexible member (802) that is connected with following long-armed (4) is installed in the described upper arm (804), and this flexible member (802) is provided with strainometer.
Preferably, be provided with guide pole (14) in the described upper mounted plate (1), be equipped with compression spring (15) on the guide pole on this (14); Be provided with down guide pole (17) in the described bottom plate (2), be equipped with lower compression spring (16) on this time guide pole (17).
The utility model compared with prior art, beneficial effect is: the resistance-strain type extensometer that the utility model provides, by being arranged on down long-armed and last support between long-armed, can guarantee between the extensometer blade gauge length position accurately, to satisfy the requirement of different gauge lengths; By being arranged on down long-armed and last U-shaped frame and T shape frame between long-armed, U-shaped frame and T shape frame are fixed by register pin, can realize long-armedly on fixing gauge length up and down, and U-shaped frame and T shape frame are not fixed by register pin, down long-armed and last long-armed can be free movable, with the elimination zero-error.
Description of drawings
Fig. 1 is the structural representation of the utility model resistance-strain type extensometer.
Fig. 2 is the vertical view of sample retained part among Fig. 1.
Identifier declaration among the figure: upper mounted plate 1, bottom plate 2, go up long-armed 3, down long-armed 4, U-shaped frame 5, T shape frame 6, support 7, extensometer 8, underarm 801, flexible member 802, flexure strip 803, upper arm 804, register pin 9, go up cramp frame gripping member 10, upper knife edge 11, down cramp frame gripping member 12, down blade 13, go up guide pole 14, on compress spring 15, lower compression spring 16, guide pole 17, sample 18 down.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
See also Fig. 1, shown in Figure 2, Fig. 1 is the structural representation of the utility model resistance-strain type extensometer, and Fig. 2 is the vertical view of sample retained part among Fig. 1.The utility model provides a kind of resistance-strain type extensometer, and it is mainly used in solving the existing clamping inconvenience of current clip formula electronic extensometer, gauge length is immutable, and in right alignment was identified, eccentric tension can produce the problem of big measuring error.
Wherein this resistance-strain type extensometer includes upper mounted plate 1, bottom plate 2, last long-armed 3 and down long-armed 4, described long-armed 3 is installed in upper mounted plate 1 inboard, and following long-armed 4 are installed in bottom plate 2 inboards; Be provided with guide pole 14 in the upper mounted plate 1, be equipped with compression spring 15 on this on the guide pole 14; Be provided with down guide pole 17 in the described bottom plate 2, be equipped with lower compression spring 16 on this time guide pole 17; Describedly long-armed 3 rear ends and between long-armed 4 rear ends extensometer 8 and support 7 are installed down, support 7 is used for guaranteeing between two blades on the extensometer gauge length position accurately, to satisfy the requirement of different gauge lengths, realizes measuring the distortion of different gauge length samples; Described extensometer 8 includes and following long-armed 4 underarms that are connected 801 and the upper arm 804 that is connected with support 7, be provided with the stable flexure strip of resilience 803 in the described underarm 801, be equipped with in the described upper arm 804 and following long-armed 4 flexible members that are connected 802, this flexible member 802 is provided with foil gauge.
Go up long-armed 3 front ends and between long-armed 4 front ends U-shaped frame 5 and T shape frame 6 are installed down, and connect by register pin 9 between described U-shaped frame 5 and the T shape frame 6; Go up long-armed 3 front ends upper knife edge 11 is installed, following long-armed 4 front ends are equipped with down blade 13; In the described upper mounted plate 1 cramp frame gripping member 10 is installed, cramp frame gripping member 12 is installed down in the bottom plate 2, described sample 18 corresponding clips are held between cramp frame gripping member 10 and upper knife edge 11, following cramp frame gripping member 12 and the following blade 13, described blade and cramp frame gripping member can form three point-contact planars, the plane of these 3 compositions, the position is difficult for sliding accurately and reliably, the test (see figure 2) that can adapt to the different-diameter sample, and can mediate or change according to the difference of sample, so that the measurement range of extensometer is wider.
Wherein said going up between cramp frame gripping member 10 and the last guide pole 14 connects by upper mounted plate 1, compresses spring 15 realizations to the clamping of sample 18 upper ends and go up guide pole 14 dependence in a plate hole of upper mounted plate 1; Connect by bottom plate 2 between same described cramp frame gripping member 12 down and the following guide pole 17, and guide pole 17 relies on 16 realizations of lower compression spring to the clamping of sample 18 lower ends in a plate hole of bottom plate 2 down, by the guide pole that is installed in cramp frame gripping member one end and the compression spring that is nested with on guide pole, can regulate the distance of cramp frame gripping member with the size of change clamping sample, and the length of spring can change thereupon.
Owing between last long-armed 3 front ends and following long-armed 4 front ends U-shaped frame 5 and T shape frame 6 are installed, and connect by register pin 9 between described U-shaped frame 5 and the T shape frame 6, before sample is tested, can insert register pin 9, make long-armed on fixing gauge length up and down; And after extracting register pin 9, long-armed up and down can be free movable, thereby can eliminate zero-error.
Upper arm 804 in the utility model extensometer, underarm 801 and variable shaped beam are formed π type structure, have solved from principle and have measured the little problem of distortion, go up the big manyfold of rigidity of the ratio of rigidity variable shaped beam of underarm simultaneously, the sensitivity that has improved this extensometer; And the utility model can be used for measuring the right alignment of sample easily with spring two extensometers that are installed.
The different gauge length of the utility model needs only the different support of configuration, the distortion that just can measure different gauge lengths, and the strain measurement of extensometer part need not be changed; When measuring right alignment, two extensometers are installed in two rear flank of the symmetry of sample, one of them measures deflection is the elongation that the stretched portion of flexural deformation participation is arranged, another one measures the elongation that deflection is the flexural deformation compression section, and these two deflections are compared, and namely can know the error of right alignment, if obtain accurate deflection, these two are averaged, thereby eliminated the measuring error that flexural deformation produces, what measure is axial tension distortion accurately.Compared with prior art, the utlity model has simple and conveniently, clamping force is adjustable, can obtain advantage such as measurement result accurately in revision test.
When the utility model is tested sample, with sample holder between blade and cramp frame gripping member, when sample is stretching or during compression, blade is followed sample deformation, by long-armed this distortion is passed to flexible member simultaneously, post the electric bridge that strainometer is formed on the flexible member, distortion makes the electric bridge out of trim, output signal, so can convert mechanical quantity to electric weight, amplification flows to collector through signal again, and the conversion of process quantities just can be recorded to the length amount in the computing machine, realizes the test to sample.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection domain of the present utility model.
Claims (5)
1. resistance-strain type extensometer, comprise upper mounted plate (1), bottom plate (2), go up long-armed (3) and following long-armed (4), described long-armed (3) are installed in upper mounted plate (1) inboard, long-armed (4) are installed in bottom plate (2) inboard down, it is characterized in that described going up between long-armed (3) rear end and following long-armed (4) rear end is equipped with extensometer (8), is equipped with support (7) between this extensometer (8) and last long-armed (3); Described going up between long-armed (3) front end and following long-armed (4) front end is equipped with U-shaped frame (5) and T shape frame (6), and connects by register pin (9) between described U-shaped frame (5) and the T shape frame (6).
2. resistance-strain type extensometer according to claim 1 is characterized in that described long-armed (3) front end of is equipped with upper knife edge (11), and following long-armed (4) front end is equipped with down blade (13).
3. resistance-strain type extensometer according to claim 1, it is characterized in that being equipped with in the described upper mounted plate (1) cramp frame gripping member (10), cramp frame gripping member (12) is installed down in the bottom plate (2), and the described cramp frame gripping member (10) that goes up is held sample (18) with the middle geometrical clamp of following cramp frame gripping member (12).
4. resistance-strain type extensometer according to claim 1, it is characterized in that described extensometer (8) includes and following long-armed (4) underarm (801) that is connected and upper arm (804) that is connected with support (7), be provided with flexure strip (803) in the described underarm (801), the flexible member (802) that is connected with following long-armed (4) is installed in the described upper arm (804), and this flexible member (802) is provided with strainometer.
5. resistance-strain type extensometer according to claim 1 is characterized in that being provided with guide pole (14) in the described upper mounted plate (1), is equipped with compression spring (15) on the guide pole on this (14); Be provided with down guide pole (17) in the described bottom plate (2), be equipped with lower compression spring (16) on this time guide pole (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024080 CN203163675U (en) | 2013-01-15 | 2013-01-15 | Resistor strain type extensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320024080 CN203163675U (en) | 2013-01-15 | 2013-01-15 | Resistor strain type extensometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203163675U true CN203163675U (en) | 2013-08-28 |
Family
ID=49024853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320024080 Expired - Lifetime CN203163675U (en) | 2013-01-15 | 2013-01-15 | Resistor strain type extensometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203163675U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352799A (en) * | 2015-11-09 | 2016-02-24 | 浙江大学 | Double-tuning-fork-shaped elastomer extensometer and measuring method |
| CN108020466A (en) * | 2017-12-21 | 2018-05-11 | 吉林大学 | For the split type miniature extensometer of small-sized original position stretching instrument stretcher strain measurement |
-
2013
- 2013-01-15 CN CN 201320024080 patent/CN203163675U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352799A (en) * | 2015-11-09 | 2016-02-24 | 浙江大学 | Double-tuning-fork-shaped elastomer extensometer and measuring method |
| CN108020466A (en) * | 2017-12-21 | 2018-05-11 | 吉林大学 | For the split type miniature extensometer of small-sized original position stretching instrument stretcher strain measurement |
| CN108020466B (en) * | 2017-12-21 | 2024-02-02 | 吉林大学 | Split type miniature extensometer for measuring stretching deformation of small-sized in-situ stretching instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203148420U (en) | Extensometer | |
| US9778024B2 (en) | Target material thickness measuring apparatus | |
| CN103090778A (en) | Strain type linear bidirectional large displacement sensor and detection method thereof | |
| CN202420975U (en) | Elastic body detection device | |
| CN212253980U (en) | A vehicle clearance measuring device | |
| CN203163675U (en) | Resistor strain type extensometer | |
| CN204240899U (en) | Profile length detector | |
| CN206772264U (en) | External diameter measuring device | |
| CN205228499U (en) | Measurement device for be used for current vortex sensor | |
| CN203364729U (en) | Cross-bar distance measuring device with concave-groove | |
| CN209512826U (en) | A kind of connecting device for sensor and average value extensometer of average value extensometer | |
| CN111981940B (en) | A cable distance measuring tool | |
| CN217303818U (en) | Automatic detection equipment for building materials | |
| CN201583225U (en) | Wire harness inspection plate | |
| CN203053808U (en) | Labeled block fixing frame for calibrating test sample measuring mechanism of tensile testing machine | |
| CN203148326U (en) | Novel railway offset scale detector | |
| CN211147918U (en) | Probe for measuring metal wire and tensiometer with same | |
| CN203337055U (en) | Length measuring tool | |
| CN211601805U (en) | A heart-shaped fabric bending ring height tester | |
| CN203132493U (en) | Unidirectional tensile test deformation measuring device for mechanical connection joint of steel reinforcement | |
| CN209446242U (en) | A kind of knitwear elasticity measuring device | |
| CN202994074U (en) | Novel high precision electronic measuring ruler | |
| CN222838028U (en) | Bonding wire resistance test device | |
| CN214502352U (en) | Strain extensometer | |
| CN208223323U (en) | A kind of automotive plate material side detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130828 |
|
| CX01 | Expiry of patent term |