CN212008191U - Extensometer calibrating device - Google Patents
Extensometer calibrating device Download PDFInfo
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- CN212008191U CN212008191U CN202020397593.0U CN202020397593U CN212008191U CN 212008191 U CN212008191 U CN 212008191U CN 202020397593 U CN202020397593 U CN 202020397593U CN 212008191 U CN212008191 U CN 212008191U
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Abstract
The utility model discloses an extensometer calibration device, which comprises a base, a vertical rod and a vertically arranged retaining rod; the base is horizontally arranged; the vertical rod is vertically arranged on the base; an upper measuring arm and a lower measuring arm are fixed on the vertical rod; the upper measuring arm is connected with an upper measuring column which is vertically arranged in a lockable sliding manner; the lower measuring arm is connected with a lower measuring column which is coaxial with the upper measuring column in a lockable sliding manner; the lower end of the upper measuring column is connected with an upper retaining arm in a lockable sliding manner; the upper end of the lower measuring column is connected with a lower retaining arm in a lockable sliding manner; the two ends of the holding rod are respectively connected with an upper holding arm and a lower holding arm. The utility model discloses set up and kept the pole, go up and keep the arm down, through last keep the arm and keep the pole with keep down the measuring column and measure the axiality between the post down in order to guarantee to avoid going up measuring column and measuring the axiality error between the post down and lead to the calibration result inaccurate, in order to improve the accuracy of calibration.
Description
Technical Field
The utility model belongs to the technical field of the measurement and specifically relates to an extensometer calibrating device is related to.
Background
In a material mechanical property detection test, an extensometer is an important measuring instrument, and an electronic extensometer has the characteristics of high precision, high sensitivity, good stability, convenience in use and the like, and is widely used for static and dynamic deformation measurement. The electron extension uses need calibrate the extensometer after a period and just can use to guarantee the accuracy of test, then current extensometer calibrating device when the test often can cause the extensometer to calibrate the inaccuracy because of last measuring column and the axiality between the measuring column is bad down, thereby influences the accuracy of experimental data.
Therefore, it is necessary to design an extensometer calibration device to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an extensometer calibrating device to the problem that causes the calibration deviation among the prior art because the axiality between last measurement post and the lower measurement post is bad.
Realize the utility model discloses the technical scheme of purpose is: an extensometer calibration device comprises a base, a vertical rod and a vertically arranged retaining rod; the base is horizontally arranged; the vertical rod is vertically arranged on the base; an upper measuring arm and a lower measuring arm are fixed on the vertical rod; the upper measuring arm is connected with an upper measuring column which is vertically arranged in a lockable sliding manner; the lower measuring arm is connected with a lower measuring column which is coaxial with the upper measuring column in a lockable sliding manner; the lower end of the upper measuring column is connected with an upper retaining arm in a lockable sliding manner; the upper end of the lower measuring column is connected with a lower retaining arm in a lockable sliding manner; the two ends of the holding rod are respectively connected with an upper holding arm and a lower holding arm.
One end of the upper measuring arm is provided with a through hole matched with the vertical rod and is fixed on the vertical rod through a locking screw; the other end of the upper measuring arm is provided with a first mounting notch; first mounting grooves matched with the upper measuring column are symmetrically formed in the two inner walls of the first mounting notch; and a locking screw for adjusting the size of the opening of the first notch is arranged at the end of the first mounting notch of the upper measuring arm.
One end of the lower measuring arm is provided with a through hole matched with the vertical rod and is fixed on the vertical rod through a locking screw; the other end of the lower measuring arm is provided with a second mounting notch; second mounting grooves matched with the lower measuring column are symmetrically formed in the two inner walls of the second mounting notch; and a locking screw for adjusting the size of the second notch opening is arranged at the second mounting notch end of the lower measuring arm.
One end of the upper holding arm is provided with a through hole matched with the upper measuring column and can be locked on the upper measuring column through a screw; the other end of the upper retaining arm is provided with a third mounting notch; third mounting grooves matched with the retaining rods are symmetrically formed in the two inner walls of the third mounting notches; and a locking screw for adjusting the size of the opening of the third mounting notch is arranged at the third mounting notch end of the upper retaining arm.
One end of the lower holding arm is provided with a through hole matched with the lower measuring column and can be locked on the lower measuring column through a screw; the other end of the lower retaining arm is provided with a fourth mounting notch; the two inner walls of the fourth mounting notch are symmetrically provided with fourth mounting grooves matched with the retaining rod; and a locking screw for adjusting the size of the opening of the fourth mounting notch is arranged at the fourth mounting notch end of the lower retaining arm.
By adopting the technical scheme, the utility model discloses following beneficial effect has: (1) the utility model discloses set up and kept the pole, go up and keep the arm down, through last keep the arm and keep the pole with keep down the measuring column and measure the axiality between the post down in order to guarantee to avoid going up measuring column and measuring the axiality error between the post down and lead to the calibration result inaccurate, in order to improve the accuracy of calibration.
(2) The utility model discloses set up first installation breach, can adjust and measure the clamp force of arm between to last measurement post, be convenient for go up the motion of measurement post.
(3) The utility model discloses set up second installation breach, can adjust down and measure the clamp force of arm between to measuring the post down, be convenient for measure the dismantlement of post down.
(4) The utility model discloses third breach and fourth breach have been set up to be connected the maintenance post with last maintenance arm and lower maintenance arm, it is more convenient to install.
Drawings
In order that the present invention may be more readily and clearly understood, the following detailed description of the present invention is given in conjunction with the accompanying drawings, in which
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of embodiment 2 of the present invention.
The reference numbers in the drawings are:
the device comprises a base 1, a vertical rod 2, a retaining rod 3, an upper measuring arm 4, a lower measuring arm 5, an upper measuring column 6, a lower measuring column 7, an upper retaining arm 8, a lower retaining arm 9, a strong magnetic block 10 and a limiting rod 11.
Detailed Description
(example 1)
Referring to fig. 1, the extensometer calibration device of the present embodiment includes a base 1, a vertical rod 2, and a vertically disposed retaining rod 3.
The base 1 is horizontally arranged, and the vertical rod 2 is vertically arranged on the base 1. An upper measuring arm 4 and a lower measuring arm 5 are fixed on the vertical rod 2. An upper measuring column 6 arranged vertically is connected to the upper measuring arm 4 in a lockable sliding manner. A lower measuring column 7, which is coaxial with the upper measuring column 6, is lockably slidably connected to the lower measuring arm 5. The lower end of the upper measuring column 6 is lockably slidably connected with an upper retaining arm 8. The upper end of the lower measuring column 7 is lockably slidably connected with a lower retaining arm 9. Both ends of the holding rod 3 are respectively connected to an upper holding arm 8 and a lower holding arm 9.
Furthermore, one end of the upper measuring arm 4 is provided with a through hole matched with the vertical rod 2 and is fixed on the vertical rod 2 through a locking screw. The other end of the upper measuring arm 4 is provided with a first mounting notch. Two inner walls of the first installation notch are symmetrically provided with first installation grooves matched with the upper measuring column 6. The first mounting notch end of the upper measuring arm 4 is provided with a locking screw for adjusting the size of the first notch opening, so that the upper measuring column 6 can be mounted and moved conveniently.
Furthermore, one end of the lower measuring arm 5 is provided with a through hole matched with the vertical rod 2 and is fixed on the vertical rod 2 through a locking screw. The other end of the lower measuring arm 5 is provided with a second mounting notch. And second mounting grooves matched with the lower measuring column 7 are symmetrically arranged on the two inner walls of the second mounting notch. And a locking screw for adjusting the size of the second gap opening is arranged at the second mounting notch end of the lower measuring arm 5, so that the lower measuring column 7 can be fixed and mounted conveniently.
Furthermore, one end of the upper holding arm 8 is provided with a through hole which is matched with the upper measuring column 6, and can be locked on the upper measuring column 6 through a screw. The other end of the upper retaining arm 8 is provided with a third mounting notch. Third mounting grooves matched with the retaining rods 3 are symmetrically arranged on the two inner walls of the third mounting notches. And a locking screw for adjusting the size of the opening of the third mounting notch is arranged at the third mounting notch end of the upper retaining arm 8, so that the upper retaining arm 8 is connected with the retaining column 3 conveniently.
Further, one end of the lower holding arm 9 is provided with a through hole which is matched with the lower measuring column 7, and can be locked on the lower measuring column 7 through a screw. The other end of the lower retaining arm 9 is provided with a fourth mounting notch. The two inner walls of the fourth mounting gap are symmetrically provided with fourth mounting grooves matched with the retaining rod 3. The fourth mounting notch end of the lower retaining arm 9 is provided with a locking screw for adjusting the size of the fourth mounting notch opening, so that the lower retaining arm 9 can be conveniently connected with the retaining column 3.
The test method of the embodiment:
1. fixing a lower measuring column 7 on the lower measuring arm 5, and then fixing one end of a lower holding arm 9 on the lower measuring column 7, and fixing the other end of the lower holding arm with the lower end of the holding column 3;
2. then, an upper measuring column 6 is inserted on the upper measuring arm 4, one end of an upper holding arm 8 is sleeved on the upper measuring column 6, and the other end of the upper holding arm is fixed with the upper end of the holding column 3;
3. binding two measuring heads of the extensometer on the upper measuring column 6 and the lower measuring column 7 by rubber bands respectively;
4. pulling the upper measuring column 6 upwards, putting a standard gauge block between the upper measuring column 6 and the lower measuring column 7, and pressing down the upper measuring column 6 to enable the upper measuring column 6 to clamp the gauge block between the upper measuring column 6 and the lower measuring column 7;
5. and reading the value of the extensometer and comparing the value of the standard gauge block to judge whether the calibration of the extensometer is qualified.
(example 2)
Referring to fig. 2, this embodiment is substantially the same as embodiment 1 except that: the lower measuring column 7 of this embodiment is a micrometer head, and the calibration of the extensometer can be realized as well. Fix the micrometer head in the second mounting groove of the second breach of measuring arm 5 down, keep the measuring column of thousand minutes head to can move to set up strong magnet 10 on the measuring column of thousand minutes head, strong magnet 10 and last measuring column between unappealing. Strong magnet 10 prevents strong magnet 10 from following the commentaries on classics through gag lever post 11 and holding column 3 fixed connection.
The specific calibration method comprises the following steps:
1. firstly, fixing the dividing head in a second mounting groove of a second gap of a lower measuring arm 5, enabling a measuring column for keeping the dividing head to move, then sleeving one end of a lower holding arm 9 on the measuring column for the dividing head, and fixing the other end of the lower holding arm with the lower end of a holding column 3;
2. loading the upper measuring column 6 into the upper measuring arm 4, enabling the bottom end of the upper measuring column 6 to be in contact with a strong magnetic block 10 on the measuring column of the thousands of heads, fixing the upper measuring column 6 on the upper measuring arm 4, fixing one end of an upper holding arm 8 on the upper measuring column 6, and fixing the other end of the upper holding arm with the upper end of a holding column 3;
3. binding two measuring heads of the extensometer on the upper measuring column 6 and the strong magnetic block 10 on the measuring column of the micrometer head by rubber bands respectively;
4. rotating the dividing head to enable the measuring column of the dividing head to move downwards to a certain value;
5. and reading the extension count value, comparing the extension count value with the micrometer head value, and judging whether the calibration result of the extension meter is qualified.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned embodiments are only specific embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (5)
1. An extensometer calibration device which is characterized in that: comprises a base (1), a vertical rod (2) and a vertically arranged retaining rod (3); the base (1) is horizontally arranged; the vertical rod (2) is vertically arranged on the base (1); an upper measuring arm (4) and a lower measuring arm (5) are fixed on the vertical rod (2); the upper measuring arm (4) is connected with an upper measuring column (6) which is vertically arranged in a lockable sliding manner; the lower measuring arm (5) is connected with a lower measuring column (7) which is coaxial with the upper measuring column (6) in a lockable sliding manner; the lower end of the upper measuring column (6) is connected with an upper retaining arm (8) in a lockable sliding manner; the upper end of the lower measuring column (7) is connected with a lower holding arm (9) in a lockable sliding manner; the two ends of the retaining rod (3) are respectively connected with an upper retaining arm (8) and a lower retaining arm (9).
2. An extensometer calibration device as claimed in claim 1, characterised in that: one end of the upper measuring arm (4) is provided with a through hole matched with the vertical rod (2) and is fixed on the vertical rod (2) through a locking screw; the other end of the upper measuring arm (4) is provided with a first mounting notch; first mounting grooves matched with the upper measuring column (6) are symmetrically formed in the two inner walls of the first mounting notch; and a locking screw for adjusting the size of the opening of the first notch is arranged at the first mounting notch end of the upper measuring arm (4).
3. An extensometer calibration device as claimed in claim 1, characterised in that: one end of the lower measuring arm (5) is provided with a through hole matched with the vertical rod (2) and is fixed on the vertical rod (2) through a locking screw; the other end of the lower measuring arm (5) is provided with a second mounting notch; second mounting grooves matched with the lower measuring column (7) are symmetrically formed in the two inner walls of the second mounting notches; and a locking screw for adjusting the size of the second notch opening is arranged at the second mounting notch end of the lower measuring arm (5).
4. An extensometer calibration device as claimed in claim 1, characterised in that: one end of the upper holding arm (8) is provided with a through hole matched with the upper measuring column (6) and can be locked on the upper measuring column (6) through a screw; the other end of the upper holding arm (8) is provided with a third mounting notch; third mounting grooves matched with the retaining rod (3) are symmetrically formed in the two inner walls of the third mounting notch; and a locking screw for adjusting the size of the opening of the third mounting notch is arranged at the third mounting notch end of the upper retaining arm (8).
5. An extensometer calibration device as claimed in claim 1, characterised in that: one end of the lower holding arm (9) is provided with a through hole matched with the lower measuring column (7) and can be locked on the lower measuring column (7) through a screw; the other end of the lower retaining arm (9) is provided with a fourth mounting notch; fourth mounting grooves matched with the retaining rod (3) are symmetrically formed in the two inner walls of the fourth mounting notch; and a locking screw for adjusting the size of the opening of the fourth mounting notch is arranged at the fourth mounting notch end of the lower retaining arm (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020397593.0U CN212008191U (en) | 2020-03-25 | 2020-03-25 | Extensometer calibrating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020397593.0U CN212008191U (en) | 2020-03-25 | 2020-03-25 | Extensometer calibrating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212008191U true CN212008191U (en) | 2020-11-24 |
Family
ID=73421238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020397593.0U Active CN212008191U (en) | 2020-03-25 | 2020-03-25 | Extensometer calibrating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212008191U (en) |
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2020
- 2020-03-25 CN CN202020397593.0U patent/CN212008191U/en active Active
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