CN214040441U - Full-bridge strain gauge capable of measuring shear stress - Google Patents
Full-bridge strain gauge capable of measuring shear stress Download PDFInfo
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- CN214040441U CN214040441U CN202022689112.6U CN202022689112U CN214040441U CN 214040441 U CN214040441 U CN 214040441U CN 202022689112 U CN202022689112 U CN 202022689112U CN 214040441 U CN214040441 U CN 214040441U
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Abstract
The utility model provides a measurable quantity shear stress full bridge strain gauge, includes the basement, be equipped with first solder joint, second solder joint, third solder joint, fourth solder joint, first wire grid, second wire grid, third wire grid and fourth wire grid on the basement, first solder joint and first wire grid are connected, first wire grid is connected with the second solder joint, the second solder joint is connected with the second wire grid, the second wire grid is connected with the third solder joint, the third solder joint is connected with the third wire grid, the third wire grid is connected with the fourth solder joint, the fourth wire grid is connected with the fourth wire grid, the fourth wire grid is connected with first solder joint, form the wheatstone bridge that is used for measuring the shear stress value of elastomer, first wire grid, second wire grid, third wire grid and fourth wire grid all incline to set up. The utility model discloses a change strainometer wire bars into 45 degrees slant arrangements to realize measuring the shear stress value of elastomer.
Description
Technical Field
The utility model relates to a strainometer, specifically speaking are measurable quantity shear stress full-bridge strainometer.
Background
The strain of the object is a very important geometrical parameter, and the accurate measurement of the strain is very important. A strain sensor is a type of sensor used to measure the strain produced by the deformation of an object under force. Resistive strain gauges are the most commonly used sensing elements. It is a sensing element that can convert changes in strain on a mechanical member into changes in resistance. Strain sensors are widely available in many types, including resistive, capacitive, piezoelectric, inductive, and optical, by principle.
There are different strain gauge types, depending on the requirements of the use. When the general conventional EB structure full-bridge strain gauge is designed, four wire grids are arranged transversely and vertically, the tensile and compressive stress value of the elastomer can be measured, but the shear stress value of the elastomer cannot be measured.
Disclosure of Invention
The to-be-solved technical problem of the utility model is to provide a measurable quantity shear stress full-bridge strain gauge.
In order to solve the technical problem, the utility model discloses take following technical scheme:
the utility model provides a measurable quantity shear stress full bridge strain gauge, includes the basement, be equipped with first solder joint, second solder joint, third solder joint, fourth solder joint, first wire grid, second wire grid, third wire grid and fourth wire grid on the basement, first solder joint and first wire grid are connected, first wire grid is connected with the second solder joint, the second solder joint is connected with the second wire grid, the second wire grid is connected with the third solder joint, the third solder joint is connected with the third wire grid, the third wire grid is connected with the fourth solder joint, the fourth wire grid is connected with the fourth wire grid, the fourth wire grid is connected with first solder joint, form the wheatstone bridge that is used for measuring the shear stress value of elastomer, first wire grid, second wire grid, third wire grid and fourth wire grid all incline to set up.
The first wire grid, the second wire grid, the third wire grid and the fourth wire grid are all obliquely arranged at an angle of 45 degrees.
The first wire grid, the second wire grid, the third wire grid and the fourth wire grid are sequentially arranged in the anticlockwise direction, the first wire grid and the third wire grid are arranged in the diagonal direction, and the second wire grid and the fourth wire grid are arranged in the diagonal direction.
The first wire grid and the third wire grid are inclined in the same direction, the second wire grid and the fourth wire grid are inclined in the same direction, and the first wire grid and the second wire grid are inclined in different directions.
The first welding point, the second welding point, the third welding point and the fourth welding point are all arranged on the same side of the substrate.
And positioning marks are arranged in the directions of the transverse central line and the vertical central line of the substrate.
The utility model discloses a change strainometer wire bars into 45 degrees slant arrangements to realize measuring the shear stress value of elastomer.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
For further understanding of the features and technical means of the present invention, as well as the specific objects and functions attained by the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. As shown in fig. 1, the utility model discloses a full bridge strain gauge capable of measuring shear stress, which comprises a substrate 9, wherein the substrate 9 is provided with a first welding spot 1, a second welding spot 2, a third welding spot 3, a fourth welding spot 4, a first wire grid 5, a second wire grid 6, a third wire grid 7 and a fourth wire grid 8, the first welding spot 1 is connected with the first wire grid 5, the first wire grid 5 is connected with the second welding spot 2, the second welding spot 2 is connected with the second wire grid 6, the second wire grid 6 is connected with the third welding spot 3, the third welding spot 3 is connected with the third wire grid 7, the third wire grid 7 is connected with the fourth welding spot 4, the fourth welding spot 4 is connected with the fourth wire grid 8, the fourth wire grid 8 is connected with the first welding spot 1, a wheatstone bridge for measuring the shear stress value of an elastomer is formed, the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are all obliquely arranged, and in order to realize a better scheme, the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are all obliquely arranged at an angle of 45 degrees. The measurement of the shear stress value of the elastic body is realized through the inclined arrangement.
The first wire grid, the second wire grid, the third wire grid and the fourth wire grid are sequentially arranged in the anticlockwise direction, the first wire grid and the third wire grid are arranged in the diagonal direction, and the second wire grid and the fourth wire grid are arranged in the diagonal direction.
The first wire grid and the third wire grid are inclined in the same direction, the second wire grid and the fourth wire grid are inclined in the same direction, and the first wire grid and the second wire grid are inclined in different directions.
The first welding point 1, the second welding point 2, the third welding point 3 and the fourth welding point 4 are all arranged on the same side of the substrate 9.
V-shaped notch positions are arranged between the first wire grid and the second wire grid, and corresponding V-shaped notch positions are respectively arranged at the positions of the second wire grid, the third wire grid, the fourth wire grid and the first wire grid.
During specific production, the polyimide film with the adhesive and the constantan foil of the metal foil are tightly attached together in a thermal lamination mode. And after the attached constantan foil is adhered to a corresponding titanium frame, throwing photoresist, drying, exposing, developing, etching and forming, and then carrying out precise zero point adjustment. And adding a protective film on the polyimide film cover layer for the full-bridge strain gauge with the zero point adjusted and high precision. And trimming the high-precision coated film by using a full-bridge strain gauge into a shape required by a design drawing.
It should be noted that the above is only a preferred embodiment of the present invention, and the present invention is not limited to the above, and although the present invention has been described in detail with reference to the embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments can be modified or some technical features can be replaced with equivalents, but any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a measurable quantity shear stress full bridge strain gauge, includes the basement, its characterized in that, be equipped with first solder joint, second solder joint, third solder joint, fourth solder joint, first wire grid, second wire grid, third wire grid and fourth wire grid on the basement, first solder joint and first wire grid are connected, first wire grid is connected with the second solder joint, the second solder joint is connected with the second wire grid, the second wire grid is connected with the third solder joint, the third solder joint is connected with the third wire grid, the third wire grid is connected with the fourth solder joint, the fourth solder joint is connected with the fourth wire grid, the fourth wire grid is connected with first solder joint, form the wheatstone bridge that is used for measuring the shear stress value of elastomer, first wire grid, second wire grid, third wire grid and fourth wire grid all incline to set up.
2. The full bridge strain gauge of claim 1, wherein the first, second, third and fourth wire grids are all tilted at an angle of 45 degrees.
3. The full-bridge strain gauge capable of measuring shear stress of claim 2, wherein the first wire grid, the second wire grid, the third wire grid and the fourth wire grid are sequentially arranged in a counterclockwise direction, the first wire grid and the third wire grid are arranged in a diagonal direction, and the second wire grid and the fourth wire grid are arranged in a diagonal direction.
4. The full-bridge strain gauge capable of measuring shear stress of claim 3, wherein the first wire grid and the third wire grid are inclined in the same direction, the second wire grid and the fourth wire grid are inclined in the same direction, and the first wire grid and the second wire grid are inclined in different directions.
5. The full bridge strain gage of claim 4 wherein said first, second, third and fourth pads are disposed on the same side of the substrate.
6. The full-bridge strain gauge capable of measuring shear stress of claim 5, wherein the base is provided with positioning marks in the directions of the transverse middle line and the vertical middle line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022689112.6U CN214040441U (en) | 2020-11-19 | 2020-11-19 | Full-bridge strain gauge capable of measuring shear stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022689112.6U CN214040441U (en) | 2020-11-19 | 2020-11-19 | Full-bridge strain gauge capable of measuring shear stress |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214040441U true CN214040441U (en) | 2021-08-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022689112.6U Active CN214040441U (en) | 2020-11-19 | 2020-11-19 | Full-bridge strain gauge capable of measuring shear stress |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214040441U (en) |
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2020
- 2020-11-19 CN CN202022689112.6U patent/CN214040441U/en active Active
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