CN216081411U - Quick mounting fixture of surface strain gauge - Google Patents
Quick mounting fixture of surface strain gauge Download PDFInfo
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- CN216081411U CN216081411U CN202122536317.5U CN202122536317U CN216081411U CN 216081411 U CN216081411 U CN 216081411U CN 202122536317 U CN202122536317 U CN 202122536317U CN 216081411 U CN216081411 U CN 216081411U
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- mounting
- strain gauge
- fixed base
- clamp
- hole
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- 238000009434 installation Methods 0.000 abstract description 14
- 238000003466 welding Methods 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
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Abstract
The utility model discloses a rapid mounting fixture for a surface strain gauge, and relates to the field of strain gauge mounting fixtures. Each clamp only needs one fixing hole point, the structure is simple, the installation is rapid, and the stress of the internal elements of the sensor is uniform. The rapid mounting fixture comprises a fixed base, wherein a fixture opening is formed in the fixed base, and a centering scribed line positioned on the central line of the fixed base is formed on the surface of the fixed base; the quick mounting fixture further comprises a mounting seat, and the bottom of the mounting seat is fixedly connected with one side of the fixed base. When guaranteeing that the structure is exquisite, simple, subsequent installation is used also more simply, convenient. Can ensure that strainometer axis installation is accurate, and then make follow-up strainometer atress even. The quick and efficient installation of the surface strain gauge can be realized.
Description
Technical Field
The utility model relates to the field of strain gauge mounting fixtures, in particular to a fixture suitable for realizing rapid mounting on a structure surface.
Background
The strain gauge is a sensor for monitoring deformation of concrete or steel structures caused by load and temperature change, wherein the strain monitoring of the steel structures is generally carried out in a surface welding or gluing mode, the strain monitoring of the concrete structures can be carried out in a pouring embedding mode or a surface mounting mode after the structures are formed, but the strain monitoring of the existing structures is carried out in a surface mounting mode.
The surface mounting of the strain gauge is carried out according to whether the sensor is provided with a mounting clamping hole or not, and the strain gauge is provided with a clamp and is not provided with a clamp, wherein if the mounting clamping hole surface of the sensor is not positioned on a horizontal plane in the mounting process, the stress of an internal sensing element is uneven, and the measured value is inaccurate. The latter can be further divided into two clamps without fixing holes (generally using steel structure welding or gluing) and with two fixing holes, but the existing mounting clamp has low mounting efficiency due to more fixing points (each strain gauge needs to be welded or provided with 4 expansion screw holes); and the concrete surface reinforcing steel bars are usually arranged densely, and the expansion screw holes are easy to be affected by the occupation of the reinforcing steel bars in the process of punching, so that the mounting failure is caused.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a quick mounting clamp suitable for the surface strain gauge, each clamp only needs one fixing hole point, the structure is simple, the mounting can be quick, and the stress of the internal element of the sensor can be uniform.
The technical scheme of the utility model is as follows: the rapid mounting fixture 2 comprises a fixed base 21, a fixture opening 4 is formed in the fixed base 21, and a centering scribed line 6 located on the central line of the fixed base 21 is formed on the surface of the fixed base 21;
the quick mounting fixture 2 further comprises a mounting seat 22 with a strain gauge mounting hole, and the bottom of the mounting seat 22 is fixedly connected with one side of the fixing base 21.
A strain gauge mounting hole for accommodating the surface strain gauge 1 is formed in the mounting seat 22, and a notch 23 is formed in one side of the strain gauge mounting hole;
the mounting seat 22 is further provided with a through hole located above the notch and a threaded hole located below the notch, the through hole is internally provided with a hexagon socket head cap screw 3, and the hexagon socket head cap screw 3 is in threaded connection with the threaded hole.
The fixed base 21 is perpendicular to the mounting seat 22.
The fixed base 21 has a triangular plate shape.
The through hole above the gap is in a step hole shape with a big top and a small bottom.
The utility model has the following beneficial effects:
firstly, only leave a anchor clamps trompil that is used for realizing fixed mounting on single quick sectional fixture, consequently, can guarantee when the structure is exquisite, simple, compare in the anchor clamps of two traditional earholes, subsequent installation of present case is used also more simply, convenient.
Secondly, because quick mounting fixture is from taking the centering groove, based on the laser level appearance is supplementary, or see through the mounting hole and observe the pencil and rule and can ensure that strainometer axis installation is accurate, and then make follow-up strainometer atress even.
The mode of carrying out electric welding, driving in the power actuated nail or driving the expansion screw through the anchor clamps trompil no matter, all reduces half than traditional anchor clamps work load with quick mounting fixture toward structural fixing, especially fixes the mounting means efficiency on the concrete surface through the power actuated setting device with anchor clamps and is the highest, can realize the quick high-efficient installation of surface strain gauge.
Drawings
FIG. 1 is a schematic structural diagram of the present application,
figure 2 is a cross-sectional view taken along line a-a of figure 1,
FIG. 3 is a sectional view taken along line B-B of FIG. 1;
in the figure, 1 is a surface strain gauge, 2 is a quick mounting clamp, 21 is a fixing base, 22 is a mounting base, 23 is a notch, 3 is an inner hexagonal screw, 4 is a clamp opening, 5 is a lead-out cable, and 6 is a centering scale line.
Detailed Description
In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.
As shown in fig. 1-3, the quick mounting fixture 2 includes a fixed base 21, a fixture opening 4 is opened in the fixed base 21, and a centering scribed line 6 located on the center line of the fixed base 21 is opened on the surface of the fixed base 21; thus, the fixing base 21 can be fixed to the surface of the structure to be measured by performing electric welding, driving a nail, or driving an expansion screw in the jig opening 4.
The quick mounting fixture 2 further comprises a mounting seat 22 with a strain gauge mounting hole, and the bottom of the mounting seat 22 is fixedly connected with one side of the fixing base 21.
Firstly, only one clamp opening 4 for realizing fixed mounting is reserved on a single quick mounting clamp 2, so that the structure is exquisite and simple, and compared with a traditional clamp with two ear holes, the subsequent mounting and use of the scheme are simpler and more convenient.
Then, because the quick mounting fixture is provided with a centering scribed line, the axis of the strain gauge can be accurately mounted based on the assistance of a laser level meter or by observing the pencil scribed line through the mounting hole, and the subsequent strain gauge is uniformly stressed.
In addition, no matter how the electric welding, the driving of the nail or the driving of the expansion screw are carried out on the clamp opening 4, the workload of the quick mounting clamp 2 is reduced by half compared with the traditional clamp in the structure fixation, particularly, the mounting mode that the clamp is fixed on the concrete surface through the nail gun has the highest efficiency, and the quick and efficient mounting of the surface strain gauge can be realized.
A strain gauge mounting hole for accommodating the surface strain gauge 1 is formed in the mounting seat 22, and a notch 23 is formed in one side of the strain gauge mounting hole;
the mounting seat 22 is further provided with a through hole located above the notch and a threaded hole located below the notch, the through hole is internally provided with a hexagon socket head cap screw 3, and the hexagon socket head cap screw 3 is in threaded connection with the threaded hole. Like this, can realize the regulation to the breach size through loosening or screwing up hexagon socket head cap screw 3 to be convenient for pack into surface strain gauge 1 and be convenient for lock it after surface strain gauge 1 packs into, its using-way is simple, and is effectual to the locking of surface strain gauge, can realize packing into fast and locking of surface strain gauge.
The fixed base 21 is perpendicular to the mounting seat 22.
The fixed base 21 has a triangular plate shape. On one hand, the fixing base can keep better structural stability; on the other hand, the setting and processing of the centering scribed line 6 can be facilitated.
The through hole above the gap is in a step hole shape with a big top and a small bottom. Therefore, after the inner hexagonal screw 3 is installed, the top of the inner hexagonal screw can be completely accommodated in the through hole, and the phenomenon that the inner hexagonal screw 3 protrudes excessively to cause movement interference with other equipment in the subsequent use process is avoided.
When the utility model is used, the installation can be carried out according to the following steps:
And 2, projecting the horizontal and plumb laser lines to the surface of the structure to be tested through a laser level meter, and if the surface strain gauge needs to be installed obliquely, marking the surface of the structure through a pencil after the central line is determined to be installed correctly.
And 3, supporting the mounting rod and the fixed quick mounting clamp on the surface of the structure, and ensuring that the centering scribed line 6 on the quick mounting clamp 2 is coincident with the scribed line of the laser line or the pencil.
And 4, finishing the fixed connection between the two quick mounting fixtures and the surface of the structure.
And 4a, if the structure to be detected is a steel structure, welding the rapid mounting clamp 2 to the surface of the steel structure to be detected through the clamp opening 4 in an electric welding mode.
And 4b, if the structure to be detected is a concrete structure, fixing the quick mounting clamp 2 to the surface of the concrete structure by using a nail gun through the clamp opening 4 or fixing the quick mounting clamp 2 to the surface of the concrete structure by using a mode of installing a built-in expansion screw through an electric hammer opening.
The rapid mounting fixture 2 is fixed in a mode of electrically welding, nailing or driving an expansion screw, and the thickness of an exposed head of a welding spot, the nailing or the expansion screw on the bottom plane of the fixture is not required to be too large, so that the subsequent taking out of a mounting rod and the loading of a surface strain gauge are not influenced.
And 5, after the quick mounting fixture is firmly fixed, loosening the hexagon socket head cap screws 3 on the fixture, taking out the mounting rod, and replacing the mounting rod with the surface strain gauge 1 with the same size. And after the surface strain gauge is in a free state, re-screwing the hexagon socket screws 3 on the two quick mounting clamps, and fixing the lead-out cable 5 of the surface strain gauge 1.
And 6, finishing the installation of the surface strain gauge after ensuring the normal reading of the surface strain gauge through the handheld reading instrument.
While the utility model has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (5)
1. The clamp for quickly installing the surface strain gauge is characterized in that the clamp (2) comprises a fixed base (21), a clamp opening (4) is formed in the fixed base (21), and a centering scribed line (6) located on the center line of the fixed base (21) is formed in the surface of the fixed base (21);
the quick mounting clamp (2) further comprises a mounting seat (22) with a strain gauge mounting hole, and the bottom of the mounting seat (22) is fixedly connected with one side of the fixing base (21).
2. The clamp for quickly mounting the surface strain gauge according to claim 1, wherein a strain gauge mounting hole for accommodating the surface strain gauge (1) is formed in the mounting seat (22), and a notch (23) is formed in one side of the strain gauge mounting hole;
the mounting seat (22) is further provided with a through hole located above the notch and a threaded hole located below the notch, the through hole is internally provided with an inner hexagonal screw (3), and the inner hexagonal screw (3) is in threaded connection with the threaded hole.
3. The fixture for quickly mounting the surface strain gauge according to claim 1 or 2, wherein the fixing base (21) is perpendicular to the mounting seat (22).
4. The fixture for quickly mounting the surface strain gauge according to claim 1 or 2, wherein the fixing base (21) has a triangular plate shape.
5. The clamp for quickly mounting the surface strain gauge according to claim 1 or 2, wherein the through hole above the notch is in a stepped hole shape with a large top and a small bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536317.5U CN216081411U (en) | 2021-10-21 | 2021-10-21 | Quick mounting fixture of surface strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536317.5U CN216081411U (en) | 2021-10-21 | 2021-10-21 | Quick mounting fixture of surface strain gauge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216081411U true CN216081411U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122536317.5U Active CN216081411U (en) | 2021-10-21 | 2021-10-21 | Quick mounting fixture of surface strain gauge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216081411U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115565343A (en) * | 2022-09-27 | 2023-01-03 | 中交四公局第三工程有限公司 | Early warning monitoring method for karst tunnel structure safety |
-
2021
- 2021-10-21 CN CN202122536317.5U patent/CN216081411U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115565343A (en) * | 2022-09-27 | 2023-01-03 | 中交四公局第三工程有限公司 | Early warning monitoring method for karst tunnel structure safety |
| CN115565343B (en) * | 2022-09-27 | 2024-05-03 | 中交雄安建设有限公司 | Early warning and monitoring method for karst tunnel structure safety |
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