CN203148420U - Extensometer - Google Patents

Extensometer Download PDF

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Publication number
CN203148420U
CN203148420U CN 201320043325 CN201320043325U CN203148420U CN 203148420 U CN203148420 U CN 203148420U CN 201320043325 CN201320043325 CN 201320043325 CN 201320043325 U CN201320043325 U CN 201320043325U CN 203148420 U CN203148420 U CN 203148420U
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CN
China
Prior art keywords
extensometer
sample
support
gauge length
guide groove
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Expired - Lifetime
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CN 201320043325
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Chinese (zh)
Inventor
黄星
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SHENZHEN WANCE TEST EQUIPMENT CO Ltd
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SHENZHEN WANCE TEST EQUIPMENT CO Ltd
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Abstract

The utility model provides an extensometer used for measuring axial direction deformation of a sample; the extensometer comprises a support; two sides of the support are provided with extensometers; one extensometer measures elongation overlayed with bending deformation stretching portion; the other extensometer measures elongation overlayed with bending deformation compression portion; averaging measuring results to eliminate measuring errors generated by bending deformation, thereby obtaining axial direction stretching deformation and realizing double side measurement of the sample. If one side of the support is provided with the extensometer and the other side of the support is provided with rollers, then single side measurement of the sample can be realized. The extensometer is also provided with a scale and an adjusting blade, and accurate positioning for the sample can be realized through the adjusting blade, thereby adapting to different measuring gauge length. Compared with the prior art, the extensometer is simple and convenient in clamping, has adjustable clamp force and gauge lengths, and is high in measuring precision.

Description

A kind of extensometer
Technical field
The utility model relates to and belongs to physics class length measurement technique field, and what be specifically related to is a kind of for the 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 the extensometer that a kind of clamping is simple, have many gauge lengths and not influenced by eccentric tension, and there is clamping inconvenience in current clip formula electronic extensometer, gauge length is single and be subjected to eccentric tension to produce the problem of big measuring error easily to solve.
The purpose of this utility model is achieved through the following technical solutions.
A kind of extensometer, the axial deformation that is used for sample (4) is measured, comprise support (1), described support (1) one side is equipped with guide pole (101) and screw rod (102), described screw rod (102) is arranged in guide pole (101), and be equipped with spring (104) on guide pole (101) and the screw rod (102), described screw rod (102) front end is provided with a grip slide (105), the first gauge length bar (5) is fixedly arranged in this grip slide (105), the upper end of the described first gauge length bar (5) is equipped with first extensometer (2), first gauge length bar (5) lower end is provided with first guide groove (501), is provided with in described first guide groove (501) for clamping sample (4), and can first regulate blade (7) along what first guide groove (501) moved up and down.
Preferably, the opposite side of described support (1) is equipped with the second gauge length bar (6), the upper end of the described second gauge length bar (6) is equipped with second extensometer (3), the lower end is provided with second guide groove (601), is provided with in described second guide groove (601) for clamping sample (4) and can second regulating blade (8) along what second guide groove (601) moved up and down.
Preferably, the opposite side of described support (1) is equipped with location-plate (10) by dog screw (11), and this location-plate (10) upper/lower terminal respectively is provided with one and is used for the fixedly roller (12) of sample (4).
Preferably, be movably set with an adjustable plate (103) on the described guide pole (101), described spring (104) is positioned between adjustable plate (103) and the grip slide (105).
Preferably, an adjusting screw(rod) (106) that is connected with adjustable plate (103) is installed also on the described support (1), this adjusting screw(rod) (106) is used for regulating the distance between adjustable plate (103) and the grip slide (105).
When the utility model is equipped with extensometer in the support both sides, can realize that measures an elongation that is superimposed with the flexural deformation stretched portion, another one measures the elongation that is superimposed with the flexural deformation compression section, these two are averaged, thereby eliminated the measuring error that flexural deformation produces, what measure is the axial tension distortion, thereby realizes the two-sided test of sample; When in support one side extensometer being installed, when opposite side is installed roller, then can realize the one-sided test to sample; The utility model extensometer has scale and regulates blade in addition, can realize accurate location to sample can adapting to different measurement gauge lengths by regulating blade.Compared with prior art, it is simple and convenient to the utlity model has clamping, and clamping force is adjustable, gauge length is adjustable and the measuring accuracy advantages of higher.
Description of drawings
Fig. 1 is that the utility model extensometer is to the structural representation of the bilateral measurement of sample.
Fig. 2 is that the utility model extensometer is to the front view of the bilateral measurement of sample.
Fig. 3 is that the utility model extensometer is to the vertical view of the bilateral measurement of sample.
Fig. 4 is that the utility model extensometer is to the structural representation of the monolateral measurement of sample.
Identifier declaration among the figure: support 1, guide pole 101, screw rod 102, adjustable plate 103, spring 104, grip slide 105, adjusting screw(rod) 106, first extensometer 2, first blade 201, second extensometer 3, second blade 301, sample 4, the first gauge length bar 5, first guide groove 501, the second gauge length bar 6, second guide groove 601, first are regulated blade 7, second and are regulated blade 8, set screw 9, location-plate 10, dog screw 11, roller 12.
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, Fig. 2, shown in Figure 3, Fig. 1 is that the utility model extensometer is to the structural representation of the bilateral measurement of sample; Fig. 2 is that the utility model extensometer is to the front view of the bilateral measurement of sample; Fig. 3 is that the utility model extensometer is to the vertical view of the bilateral measurement of sample.The utility model provides a kind of novel extensometer, be mainly used in solving that there is clamping inconvenience in current clip formula electronic extensometer, gauge length is single and be subjected to eccentric tension to produce the problem of big measuring error easily, this extensometer have clamping simple, advantage such as have many gauge lengths and be not subjected to that eccentric tension influences.
Wherein the utility model embodiment extends and counts bilateral measurement extensometer, include support 1, this support 1 is the shape of cranking arm, the one side is equipped with guide pole 101, screw rod 102, adjustable plate 103 and adjusting screw(rod) 106, described screw rod 102 center sections are arranged in guide pole 101, and the rear end is installed on the support 1, and front end is provided with a grip slide 105, and be equipped with spring 104 on guide pole 101 and the screw rod 102, described spring 104 is between adjustable plate 103 and grip slide 105.
The first gauge length bar 5 is fixedly arranged in the grip slide 105, the upper end of the described first gauge length bar 5 is equipped with first extensometer 2, first blade 201 for clamping sample 4 is installed in first extensometer 2, and described first blade 201 is connected with gage beam in being installed in first extensometer 2; The lower end of the first gauge length bar 5 is provided with first guide groove 501, is provided with in described first guide groove 501 for clamping sample 4 and can first regulating blade 7 along what first guide groove 501 moved up and down.
Adjustable plate 103 is movably arranged on the guide pole 101, and be connected with adjusting screw(rod) 106, and regulate by adjusting screw(rod) 106 and to move forward and backward along guide pole 101, to realize the adjusting of the distance between adjustable plate 103 and the grip slide 105, and spring 104 is compressible in this adjustment process, satisfying different clamping dynamics, thereby sample 4 is clamped.
The opposite side of support 1 is equipped with the second gauge length bar 6 by set screw 9, the upper end of the described second gauge length bar 6 is equipped with second extensometer 3, second blade 301 for clamping sample 4 is installed in second extensometer 3, and described second blade 301 is connected with gage beam in being installed in second extensometer 3; The lower end of the second gauge length bar 6 is provided with second guide groove 601, is provided with in described second guide groove 601 for clamping sample 4 and can second regulating blade 8 along what second guide groove 601 moved up and down.
When sample 4 is measured, the upper end corresponding clip of sample 4 can be held between first blade 201 and second blade 301, the lower end corresponding clip is held in first and regulates between blade 7 and the second adjusting blade 8, because the first adjusting blade 7, second is regulated blade 8 and can be regulated according to the length of sample 4, and the first gauge length bar 5 and the second gauge length bar 6 are provided with scale, therefore can adapt to the measurement of different gauge lengths; When tensile sample 4, sample generation deformation, corresponding under the effect of spring 104, sample 4 can be clamped, produce that deformation is then corresponding to feed back in first extensometer 2 and second extensometer 3 by first blade 201 and second blade 301.
Present embodiment medium-height trestle both sides are equipped with extensometer, can realize that an extensometer measures the elongation that is superimposed with the flexural deformation stretched portion, the another one extensometer measures the elongation that is superimposed with the flexural deformation compression section, these two are averaged, thereby eliminated the measuring error that flexural deformation produces, what measure is the axial tension distortion, thereby realizes the two-sided test of sample.
See also shown in Figure 4ly, Fig. 4 is that the utility model extensometer is to the structural representation of the monolateral measurement of sample.The utility model embodiment extends and counts monolateral measurement extensometer, its structure is identical with bilateral measurement extensometer, the difference part is that second extensometer 3, second blade 301, the second gauge length bar 6 and the second adjusting blade 8 etc. that will be installed in support 4 opposite sides replace to location-plate 10, this location-plate 10 is fixedly mounted on the opposite side of support 4 by dog screw 11, respectively is provided with one at the upper/lower terminal of location-plate 10 and is used for the fixedly roller 12 of sample 4.
In sum, the utility model has designed two extensometers that have scale, and at first the adjusting blade on the extensometer can be adjusted to different positions exactly, to satisfy the requirement of different gauge lengths; Secondly, designed spring holding device, the scale bar of one of them extensometer is installed in the stiff end of supporting rod, the position can be regulated, to adapt to different gauge lengths, another one is installed in the movable part of clamping device, thereby makes these two extensometers that have scale be in the relative both sides of sample respectively; End at supporting rod is equipped with two guide poles and a double-screw bolt in addition, be with two fixedly double-screw bolt and adjustable plates of extensometer in two guide poles, change the position of adjustable plate by the double-screw bolt on the adjusting supporting rod, the length of two springs is also changed thereupon, thereby change whole extensometer to the holding force of sample; When carrying out the sample one-sided test, in support one side roller devices is installed, this device can rotate around the installation shaft of centre, two top rollers are also rotatable, to adapt to the crooked of test specimen and to stretch, replace extensometer on one side with this device, bilateral measurement is become only to monolateral measurement.
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. extensometer, the axial deformation that is used for sample (4) is measured, comprise support (1), it is characterized in that described support (1) one side is equipped with guide pole (101) and screw rod (102), described screw rod (102) is arranged in guide pole (101), and be equipped with spring (104) on guide pole (101) and the screw rod (102), described screw rod (102) front end is provided with a grip slide (105), the first gauge length bar (5) is fixedly arranged in this grip slide (105), the upper end of the described first gauge length bar (5) is equipped with first extensometer (2), first gauge length bar (5) lower end is provided with first guide groove (501), is provided with in described first guide groove (501) for clamping sample (4), and can first regulate blade (7) along what first guide groove (501) moved up and down.
2. extensometer according to claim 1, the opposite side that it is characterized in that described support (1) is equipped with the second gauge length bar (6), the upper end of the described second gauge length bar (6) is equipped with second extensometer (3), the lower end is provided with second guide groove (601), is provided with in described second guide groove (601) for clamping sample (4) and can second regulating blade (8) along what second guide groove (601) moved up and down.
3. extensometer according to claim 1 is characterized in that the opposite side of described support (1) is equipped with location-plate (10) by dog screw (11), and this location-plate (10) upper/lower terminal respectively is provided with one and is used for the fixedly roller (12) of sample (4).
4. extensometer according to claim 1 is characterized in that being movably set with on the described guide pole (101) adjustable plate (103), and described spring (104) is positioned between adjustable plate (103) and the grip slide (105).
5. according to claim 1 or 4 described extensometers, it is characterized in that also being equipped with on the described support (1) adjusting screw(rod) (106) that is connected with adjustable plate (103), this adjusting screw(rod) (106) is used for regulating the distance between adjustable plate (103) and the grip slide (105).
CN 201320043325 2013-01-24 2013-01-24 Extensometer Expired - Lifetime CN203148420U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201320043325 CN203148420U (en) 2013-01-24 2013-01-24 Extensometer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201320043325 CN203148420U (en) 2013-01-24 2013-01-24 Extensometer

Publications (1)

Publication Number Publication Date
CN203148420U true CN203148420U (en) 2013-08-21

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CN 201320043325 Expired - Lifetime CN203148420U (en) 2013-01-24 2013-01-24 Extensometer

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CN (1) CN203148420U (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444727A (en) * 2015-11-16 2016-03-30 武汉大学 Measuring range adjusting device of electronic extensometer
CN105467592A (en) * 2015-12-22 2016-04-06 方雷 Perspective near-to-eye display assembly for visibility adjustment
CN106289972A (en) * 2016-08-04 2017-01-04 深圳市万泽中南研究院有限公司 High-temp strain controls device
CN106680087A (en) * 2016-12-31 2017-05-17 天津赛达鑫源检验检测有限公司 Clamping device for extensometer
CN108088735A (en) * 2018-01-15 2018-05-29 华侨大学 A kind of Axial extensometer erecting device
CN109443272A (en) * 2018-12-26 2019-03-08 中车石家庄车辆有限公司 Railway freight-car pillow spring free high tester
CN109974657A (en) * 2019-04-03 2019-07-05 威海汇智机电科技有限公司 A kind of connecting device for sensor and average value extensometer of average value extensometer
CN110553620A (en) * 2019-09-04 2019-12-10 中国商用飞机有限责任公司北京民用飞机技术研究中心 Extensometer fixing device and system for measuring nail hole deformation
CN110686973A (en) * 2019-10-21 2020-01-14 吉林大学 Stretching-twisting composite extensometer

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105444727A (en) * 2015-11-16 2016-03-30 武汉大学 Measuring range adjusting device of electronic extensometer
CN105467592A (en) * 2015-12-22 2016-04-06 方雷 Perspective near-to-eye display assembly for visibility adjustment
CN106289972A (en) * 2016-08-04 2017-01-04 深圳市万泽中南研究院有限公司 High-temp strain controls device
CN106680087A (en) * 2016-12-31 2017-05-17 天津赛达鑫源检验检测有限公司 Clamping device for extensometer
CN108088735A (en) * 2018-01-15 2018-05-29 华侨大学 A kind of Axial extensometer erecting device
CN109443272A (en) * 2018-12-26 2019-03-08 中车石家庄车辆有限公司 Railway freight-car pillow spring free high tester
CN109974657A (en) * 2019-04-03 2019-07-05 威海汇智机电科技有限公司 A kind of connecting device for sensor and average value extensometer of average value extensometer
CN110553620A (en) * 2019-09-04 2019-12-10 中国商用飞机有限责任公司北京民用飞机技术研究中心 Extensometer fixing device and system for measuring nail hole deformation
CN110686973A (en) * 2019-10-21 2020-01-14 吉林大学 Stretching-twisting composite extensometer
CN110686973B (en) * 2019-10-21 2024-06-04 吉林大学 Stretch-twist composite extensometer

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Granted publication date: 20130821