CN211347689U - Extensometer clamping anti-skid device for measuring steel deformation - Google Patents
Extensometer clamping anti-skid device for measuring steel deformation Download PDFInfo
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- CN211347689U CN211347689U CN201922289395.2U CN201922289395U CN211347689U CN 211347689 U CN211347689 U CN 211347689U CN 201922289395 U CN201922289395 U CN 201922289395U CN 211347689 U CN211347689 U CN 211347689U
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- extensometer
- sleeve
- centre gripping
- measuring
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Abstract
The utility model discloses an extensometer centre gripping antiskid for measuring steel warp, be used for extensometer centre gripping steel sample, including two pairs of sleeves, the sleeve includes fixed part and clamping part, the external diameter of fixed part slightly is greater than the external diameter of clamping part, telescopic internal diameter slightly is greater than the diameter of steel sample, set up the screw hole perpendicularly on the periphery of fixed part, the screw hole facial make-up is equipped with the bolt, the sleeve screws through the bolt and is fixed with the steel sample, the extensometer centre gripping is on telescopic clamping part, adopt simple sleeve structure and bolt structure, effectively prevented that the sample from skidding at atress in-process centre gripping position, improved the accuracy of test result, prevent the damage of extensometer.
Description
Technical Field
The utility model relates to a material performance test's experimental technical field especially relates to an extensometer centre gripping antiskid for measuring steel warp.
Background
The extensometer is used for measuring the performance index of the steel bar for resisting deformation, and a stress-strain curve can not be obtained without the extensometer. The extensometer is generally used for materials with unobvious yield strength steps, has high precision and small measuring range, and is generally used for measuring elastic modulus or tensile and compression tests with higher precision requirements.
In the process of measuring the elongation and the elastic modulus of the steel bar by using the extensometer, the clamping mode of the extensometer has great influence on the test result. The extensometer that uses at present fixes on the sample through the rubber band, and the winding number of turns, elasticity degree and the positive degree of winding of rubber band all can influence test curve, and when the sample atress reached the biggest static friction power, sample centre gripping position will take place to slide, makes the extensometer centre gripping position on the sample change, because extensometer measurement accuracy is higher, the error that the phenomenon of skidding produced is great to the influence of test result to very easily damage the extensometer.
A chinese patent with application No. CN201810564129.3 discloses a fixing device for a high-temperature tensile extensometer of a metal sheet, which fixes the high-temperature extensometer through an upper clamping block and a lower clamping block, wherein the two clamping blocks are in a semicircular block shape, a through groove is formed at a contact part with a sample for fixing the sample, and an annular groove is formed at an arc-shaped part for conveniently connecting the high-temperature extensometer through a fixing wire. The guide rod of the device is provided with a telescopic sleeve, so that samples with different gauge length can be conveniently used. The device has the advantages of simple structure, convenience and easy operation, low manufacturing cost, suitability for high-temperature tensile tests of metal sheets with various thicknesses and lengths, and effective avoidance of fixed line fracture, extensometer falling and test failure caused by direct contact with sheet samples at high temperature. However, the structure of the device is too much, the upper clamping block and the lower clamping block are required to be grooved in the middle part, the device is complex, and the tension of the fixed wire can damage the extensometer.
SUMMERY OF THE UTILITY MODEL
Based on the technical problem that the background art exists, the utility model provides an extensometer centre gripping antiskid for measuring steel warp adopts simple sleeve structure and bolt structure, has prevented effectively that the sample from skidding at atress in-process clamping part, has improved the accuracy of test result, prevents the damage of extensometer.
The utility model provides an extensometer centre gripping antiskid for measuring steel warp for extensometer centre gripping steel sample, including sleeve two pairs, the sleeve includes fixed part and clamping part, and the external diameter of fixed part slightly is greater than the external diameter of clamping part, and telescopic internal diameter slightly is greater than the diameter of steel sample, sets up the screw hole perpendicularly on the periphery of fixed part, and the screw hole facial make-up is equipped with the bolt, and the sleeve screws through the bolt and is fixed with the steel sample, and the extensometer centre gripping is on telescopic clamping part.
The extensometer comprises a support arm, a sensor, a measuring clamp and a communication cable, wherein the end part of the support arm is clamped on the clamping part of the sleeve through the measuring clamp, the other end part of the support arm is connected with the sensor, and the communication cable is led out from the sensor and is connected with a computer.
The sleeve is an aluminum alloy sleeve.
The sleeve is provided with one pair, two pairs or multiple pairs.
The utility model provides a pair of extensometer centre gripping antiskid for measuring steel warp has: the utility model discloses the extensometer centre gripping antiskid for measuring steel warp that provides in the structure simplifies the fixed degree of difficulty of extensometer centre gripping, avoids the slip that extensometer and sample centre gripping position produced, improves the accuracy of test result, prevents the damage of extensometer.
Drawings
Fig. 1 is a schematic structural view of an extensometer clamping antiskid device for measuring steel deformation according to the present invention;
wherein, 100, extensometer; 101. support arm, 102, sensor, 103, measuring clamp, 104, communication cable, 200, steel sample, 300, sleeve, 301, fixing part, 302, clamping part, 400 and bolt.
Detailed Description
As shown in FIG. 1, FIG. 1 is the utility model discloses an extensometer centre gripping antiskid for measuring steel warp adopts simple sleeve structure and bolt structure, has effectively prevented that the sample from skidding at atress in-process clamping part, has improved the accuracy of test result, prevents the damage of extensometer.
Referring to fig. 1, the utility model provides an extensometer centre gripping antiskid for measuring steel warp for extensometer 100 centre gripping steel sample 200, including sleeve 300 two pairs, sleeve 300 includes fixed part 301 and clamping part 302, and the external diameter of fixed part 301 slightly is greater than the external diameter of clamping part 302, and the internal diameter of sleeve 300 slightly is greater than the diameter of steel sample 200, sets up the screw hole perpendicularly on the periphery of fixed part 301, and the screw hole facial make-up is equipped with bolt 400, and sleeve 300 screws and fixes with steel sample 200 through bolt 400, and extensometer 100 centre gripping is on the clamping part 302 of sleeve 300. The arrangement of the sleeve 300 and the bolt 400 effectively prevents the steel sample 200 from slipping in the measurement process, and the accuracy of the test result is improved.
The extensometer 100 comprises an arm 101, a sensor 102, a measuring clip 103 and a communication cable 104, wherein the end of the arm 101 is clamped on a clamping part 302 of the sleeve 300 through the measuring clip 103, the other end of the arm 101 is connected with the sensor 102, and the communication cable 104 is led out from the sensor 102 and is connected with a computer. The measuring clamp 103 measures the deformation of the steel material sample 200 and transmits a signal to the computer through the sensor 102 and the communication cable 104.
The sleeve 300 is an aluminum alloy sleeve. The aluminum alloy is low in cost, and the manufacturing and using cost of the sleeve 300 is reduced.
The sleeve 300 is provided in one, two or more pairs.
The working process is as follows: the steel sample 200 is passed through the sleeve 300, the measuring clamp 103 on the arm 101 of the extensometer 100 clamps the clamping part 302, and the measuring clamp 103 measures the deformation of the steel sample 200 and transmits the signal to the computer through the sensor 102 and the communication cable 104.
To sum up, the utility model discloses the extensometer centre gripping antiskid for measuring steel warp that provides in the structure simplifies the fixed degree of difficulty of extensometer centre gripping, avoids the slip that extensometer and sample centre gripping position produced, improves the accuracy of test result, prevents the damage of extensometer.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered in the protection scope of the present invention.
Claims (3)
1. The utility model provides an extensometer centre gripping antiskid for measuring steel is out of shape for extensometer (100) centre gripping steel sample (200), a serial communication port, including sleeve (300) two pairs, sleeve (300) include fixed part (301) and clamping part (302), and the external diameter of fixed part (301) slightly is greater than the external diameter of clamping part (302), and the internal diameter of sleeve (300) slightly is greater than the diameter of steel sample (200), sets up the screw hole perpendicularly on the periphery of fixed part (301), and the threaded hole facial make-up is equipped with bolt (400), and sleeve (300) are screwed and are fixed with steel sample (200) through bolt (400), and extensometer (100) centre gripping is on clamping part (302) of sleeve (300).
2. The clamping antiskid device for the extensometer used for measuring the deformation of the steel material is characterized in that the extensometer (100) comprises a support arm (101), a sensor (102), a measuring clamp (103) and a communication cable (104), wherein the end part of the support arm (101) is clamped on a clamping part (302) of a sleeve (300) through the measuring clamp (103), the other end part of the support arm (101) is connected with the sensor (102), and the communication cable (104) is led out from the sensor (102) and is connected with a computer.
3. The extensometer-gripping antiskid device for measuring deformation of steel material as claimed in claim 1, characterized in that the sleeve (300) is an aluminum alloy sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289395.2U CN211347689U (en) | 2019-12-18 | 2019-12-18 | Extensometer clamping anti-skid device for measuring steel deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922289395.2U CN211347689U (en) | 2019-12-18 | 2019-12-18 | Extensometer clamping anti-skid device for measuring steel deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211347689U true CN211347689U (en) | 2020-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922289395.2U Active CN211347689U (en) | 2019-12-18 | 2019-12-18 | Extensometer clamping anti-skid device for measuring steel deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211347689U (en) |
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2019
- 2019-12-18 CN CN201922289395.2U patent/CN211347689U/en active Active
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: A gripping and anti slip device for measuring steel deformation using an extensometer Effective date of registration: 20230921 Granted publication date: 20200825 Pledgee: Xixian New District Financing Guarantee Co.,Ltd. Pledgor: Shaanxi Nitya New Materials Technology Co.,Ltd. Registration number: Y2023990000462 |