CN216208118U - Concrete axial tensile test deformation measuring device positioning mechanism - Google Patents
Concrete axial tensile test deformation measuring device positioning mechanism Download PDFInfo
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- CN216208118U CN216208118U CN202121792246.9U CN202121792246U CN216208118U CN 216208118 U CN216208118 U CN 216208118U CN 202121792246 U CN202121792246 U CN 202121792246U CN 216208118 U CN216208118 U CN 216208118U
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Abstract
The utility model provides a positioning mechanism of a concrete axial tensile test deformation measuring device, which comprises a sleeve plate, a scale and a handle, wherein the sleeve plate is composed of a horizontal plate and a vertical plate connected with the horizontal plate, the scale is arranged on the horizontal plate, and the handle is arranged on the vertical plate. The device is used for positioning the position of the strain gauge for measuring the deformation of the concrete axial tensile test, so that the testing speed is greatly improved, the positioning is accurate, and the true and reliable testing result is ensured.
Description
Technical Field
The utility model relates to a positioning mechanism, in particular to a positioning plate of a deformation measuring device for a concrete axial tensile test.
Background
In the concrete axial tension test, when the axial tensile strength, the ultimate tensile value and the tensile elastic modulus of a test piece are measured, a deformation measuring device needs to be installed, and the deformation measuring device generally adopts a dial indicator, a resistance strain gauge or a displacement sensor for measurement. The size of a test piece for the concrete axial tensile test is 600mm multiplied by 196mm multiplied by 100mm (the size of a middle straight part is 220mm multiplied by 100mm), when a resistance strain gauge is adopted to measure deformation, after the test piece is taken out from a curing room, the surface of the middle part of the middle straight part of the test piece is dried by electric blowing as soon as possible, then a 502 glue is used for adhering a resistance strain gauge, the length of the resistance strain gauge is not less than 3 times of the maximum particle size of aggregate, the test piece is taken out until the test is finished, the test piece is not more than 4h, and the moisture of the test piece is not needed to be kept. Therefore, the mounting and the sticking of the resistance strain gauge are very important, the mounting is required to be completed in a short time, the symmetrical positions in the middle of two sides of the test piece are ensured, and otherwise, the accuracy of the test result is influenced. At present, manual ruler amount positioning is generally adopted during installation, and installation work needs long time, which takes time and is inaccurate.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a positioning mechanism of a concrete axial tension test deformation measuring device, which can quickly and accurately position a resistance strain gauge on a concrete sample.
The purpose of the utility model is realized as follows:
a concrete axial tension test deformation measuring device positioning mechanism is characterized by comprising a sleeve plate, a handle and a scale, wherein the sleeve plate is composed of a horizontal plate and a vertical plate connected with the horizontal plate, and the lengths of the horizontal plate and the vertical plate are matched with the length of a groove of a corresponding middle straight part of a concrete axial tension test specimen, so that the sleeve plate can be just clamped into the groove; the horizontal plate is provided with a scale used for positioning the position of the resistance strain gauge, the width of the horizontal plate meets the condition that the outer edge of the horizontal plate is just the sticking position of the resistance strain gauge, or a hole used for marking the sticking position of the strain gauge is arranged inside the horizontal plate; the width of the vertical plate is smaller than the height and width of the middle straight portion of the test piece.
Further, the handle is arranged in the middle of the vertical plate.
Further, the total length of the scale is 22cm, and the scale is set to 0 in the middle of the scale.
By adopting the device, the position of the resistance strain gauge on the test piece can be accurately and quickly positioned, and the deformation measuring device is accurate and efficient in installation work. The mounting and pasting speed of the resistance strain gauge is greatly improved, the positioning is accurate, and the truth and reliability of the test result are ensured.
Drawings
The utility model is further illustrated by the following figures and examples.
Fig. 1 is a schematic structural view of the present invention.
FIG. 2 is a schematic illustration of a concrete sample.
Detailed Description
The structure of the utility model is shown in figure 1, and the positioning mechanism of the concrete axial tensile test deformation measuring device comprises a sleeve plate, a scale 3 and a handle 4, wherein the sleeve plate is composed of a horizontal plate 1 and a vertical plate 2 connected with the horizontal plate 1, the scale 3 is arranged on the horizontal plate 1, and the handle 4 is arranged on the vertical plate 2.
The sleeve plate can be just clamped into the groove 101 of the concrete tensile test specimen 100 corresponding to the middle straight section.
Horizontal plate length is 220mm, and wherein, horizontal plate 1's width is 48.5mm, and the scale is 0 in the middle of the scale, and both sides top scale is 11cm, and the width of vertical plate is 50mm, adopts organic glass material. The width of the vertical plate is about half of the width of the groove 101 at the middle straight section of the concrete tensile test specimen.
After the test piece is taken out of the curing chamber during testing, any side surface of the test piece during molding is placed on the workbench upwards, and the middle part of one side of the upward surface of the side surface of the test piece is dried by electric air blowing. The device is sleeved on a groove 101 corresponding to a middle straight section of a test piece, a horizontal plate 1 and the upward side surface of the test piece are attached, a vertical plate 2 and the side surface of the test piece are attached, the horizontal plate 1 and the vertical plate 2 are aligned and attached to the middle part of the test piece, a red and blue pencil is used for marking a line along a scale 3 on the horizontal plate 1 at the middle position, the length of the marked line is equal to the length of a resistance strain gauge, a positioning plate is taken away, and the resistance strain gauge is installed and attached by using 502 glue along the edge of the marked line and towards the direction of the middle part of the test piece. And turning over the test piece, enabling the other side surface to be upward during molding, and positioning, mounting and adhering the resistance strain gauge according to the steps.
In the above embodiment, the width of the horizontal plate is less than half of the width of the middle straight portion, and the distance from the outer edge 10 of the horizontal plate to the center line of the middle straight portion of the test piece is exactly half of the width of the resistance strain gauge.
It is also feasible if the width of the horizontal plate exceeds half of the width of the middle straight part of the test piece, as long as a hole for marking the adhering position of the resistance strain gauge is arranged inside the horizontal plate, and the distance from the edge of the hole to the center line of the middle straight part of the test piece is exactly half of the width of the resistance strain gauge.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, i.e. all equivalent variations and modifications made by the present invention are covered by the scope of the claims of the present invention, which is not limited by the examples herein.
Claims (3)
1. A concrete axial tension test deformation measuring device positioning mechanism is characterized by comprising a sleeve plate, a handle and a scale, wherein the sleeve plate is composed of a horizontal plate (1) and a vertical plate (2) connected with the horizontal plate (1), and the lengths of the horizontal plate and the vertical plate are matched with the length of a groove of a concrete axial tension test specimen corresponding to a middle straight part, so that the sleeve plate can be just clamped into the groove; the horizontal plate (1) is provided with a scale (3) for positioning the position of the resistance strain gauge, the width of the horizontal plate meets the condition that the outer edge of the horizontal plate is just the adhering position of the resistance strain gauge, or a hole for marking the adhering position of the resistance strain gauge is arranged inside the horizontal plate;
the width of the vertical plate is lower than the height and width of the middle straight portion of the test piece.
2. The positioning mechanism for the deformation measuring device in the concrete axial tension test as claimed in claim 1, wherein the handle is arranged in the middle of the vertical plate.
3. The positioning mechanism for the deformation measuring device in the concrete axial tension test as claimed in claim 1, wherein the total length of the scale is 22cm, and the middle scale of the scale is set to 0.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792246.9U CN216208118U (en) | 2021-08-03 | 2021-08-03 | Concrete axial tensile test deformation measuring device positioning mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121792246.9U CN216208118U (en) | 2021-08-03 | 2021-08-03 | Concrete axial tensile test deformation measuring device positioning mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216208118U true CN216208118U (en) | 2022-04-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121792246.9U Active CN216208118U (en) | 2021-08-03 | 2021-08-03 | Concrete axial tensile test deformation measuring device positioning mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216208118U (en) |
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2021
- 2021-08-03 CN CN202121792246.9U patent/CN216208118U/en active Active
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