CN216081410U - Quick installation device of formula concrete strain meter burys - Google Patents
Quick installation device of formula concrete strain meter burys Download PDFInfo
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- CN216081410U CN216081410U CN202122536303.3U CN202122536303U CN216081410U CN 216081410 U CN216081410 U CN 216081410U CN 202122536303 U CN202122536303 U CN 202122536303U CN 216081410 U CN216081410 U CN 216081410U
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- strain gauge
- embedded
- mounting seat
- stainless steel
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a quick installation device for an embedded concrete strain gauge, and relates to the field of strain gauge installation devices. The device simple structure can fine restriction strainometer off normal to it is convenient to install. The quick mounting device comprises a mounting seat and a stainless steel ribbon, wherein small grooves for containing the embedded strain gauges and large grooves for containing the deformed steel bars are respectively arranged on two sides of the mounting seat, and the deformed steel bars, the mounting seat and the embedded strain gauges are tied up through the stainless steel ribbon. The fixing device has the advantages of convenience and rapidness in installation, high efficiency, firmness in fixation, accuracy in trend and the like. Most importantly, stress rings at two ends of the strain gauge are in a completely free state after the strain gauge is installed, and the strain gauge rod body is not subjected to the action of bending moment, so that strain change of follow-up concrete can be accurately sensed, and accurate monitoring is realized.
Description
Technical Field
The utility model relates to the field of strain gauge mounting devices, in particular to a device suitable for quickly mounting a strain gauge embedded in concrete.
Background
The strain gauge is a sensor for monitoring deformation of concrete or steel structures due to 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 structure forming, and the strain gauge can be installed in the concrete structures in an embedding mode to more accurately obtain stress change of the structures. In order to make the internal sensing element of the embedded strain gauge consistent with the deformation of concrete, two stress rings which are slightly larger than the diameter of a sensor rod body are usually arranged at two ends of the sensor, and the stress rings are embedded and fixed in the concrete to coordinate with the deformation of the concrete, so that the measured value is accurate. However, the embedded strain gauge generally has no auxiliary mounting device, and the conventional mounting method is to simply bind the strain gauge on the steel bar through a binding wire (binding belt), which brings two problems to subsequent measurement. Secondly, the existing concrete structure usually adopts the twisted steel, and the strainometer directly binds to the twisted steel to easily make the stress ring be embedded and clamped by the thread of the steel, so that the real deformation of the concrete material can not be obtained in the subsequent test.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides a quick mounting device for the strain gauge embedded in concrete, which has a simple structure, can well limit the deviation of the strain gauge and is convenient and quick to mount.
The technical scheme of the utility model is as follows: quick installation device includes mount pad 3 and stainless steel ribbon 4, the both sides of mount pad 3 are seted up respectively and are used for the holding to bury the little recess of formula strainometer 1 and be used for the big recess of holding screw-thread steel 2, through stainless steel ribbon 4 ties up screw-thread steel 2, mount pad 3 and bury formula strainometer 1.
The small and large grooves remain parallel.
The mounting seat 3 is a rubber mounting seat or a plastic mounting seat.
The width of the stainless steel cable tie 4 is not less than 1 cm.
The thickness of the mounting seat 3 is 4-5 cm.
And a plurality of grooves matched with the spiral protrusions on the surface of the deformed steel bar 2 are formed in the inner wall of the large groove.
The utility model has the beneficial effects that:
firstly, the mounting seat is made of plastic or rubber materials, has certain elasticity, and can ensure the firmness of subsequent binding of the binding belt.
And secondly, the quick mounting device is simple in structure, but the designed axis of the strain gauge can be limited to be consistent with the trend of the deformed steel bar according to the concave surface designed by the curvature of the strain gauge and the deformed steel bar.
Thirdly, the embedded strain gauge is limited by the mounting seat and locked by a stainless steel ribbon, and the embedded strain gauge has the advantages of convenience and rapidness in mounting, high efficiency, firmness in fixing, accuracy in trend and the like. Most importantly, stress rings at two ends of the strain gauge are in a completely free state after the strain gauge is installed, and the strain gauge rod body is not subjected to the action of bending moment, so that strain change of follow-up concrete can be accurately sensed, and accurate monitoring is realized.
Drawings
Figure 1 is a schematic diagram of an embodiment of the present disclosure,
figure 2 is a cross-sectional view taken along line a-a of figure 1,
figure 3 is a cross-sectional view taken along line B-B of figure 1,
fig. 4 is a schematic structural diagram of the mounting seat in the present application.
In the figure, 1 is an embedded strain gauge, 2 is deformed steel, 3 is a mounting seat, 4 is a stainless steel ribbon, 5 is a limiting ball, 6 is a lead-out cable, and 7 is a stress ring.
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 figures 1-4, the quick mounting device comprises a mounting base 3 and a stainless steel ribbon 4, wherein two sides of the mounting base 3 are respectively provided with a small groove for accommodating the embedded strain gauge 1 and a large groove for accommodating the deformed steel bar 2, and the deformed steel bar 2, the mounting base 3 and the embedded strain gauge 1 are bundled by the stainless steel ribbon 4. Wherein, the simple structure of mount pad, exquisiteness, it is spacing through the mount pad to bury formula strainometer to assist with the locking of stainless steel ribbon, have advantages such as the installation is convenient, high-efficient, fixed firm, move towards accuracy. Most importantly, stress rings at two ends of the strain gauge are in a completely free state after the strain gauge is installed, and the strain gauge rod body is not subjected to the action of bending moment, so that strain change of follow-up concrete can be accurately sensed, and accurate monitoring is realized.
The small and large grooves remain parallel. Therefore, the groove designed according to the curvature of the strain gauge and the deformed steel bar can limit the design axis of the strain gauge to be consistent with the trend of the deformed steel bar.
The mounting seat 3 is a rubber mounting seat or a plastic mounting seat. Therefore, the mounting seat is processed by adopting plastic or rubber materials, so that the mounting seat has certain elasticity, and the subsequent binding firmness of the stainless steel binding belt can be ensured.
The width of the stainless steel cable tie 4 is not less than 1 cm.
The thickness of the mounting seat 3 is 4-5 cm.
And a plurality of grooves matched with the spiral protrusions on the surface of the deformed steel bar 2 are formed in the inner wall of the large groove. Therefore, the mounting base 3 can be better attached to the surface of the deformed steel bar 1, and the embedded type strain gauge 1 can keep better stability after being mounted.
When the utility model is used, the method can be carried out according to the following steps:
step 1, selecting a mounting seat with a corresponding specification (different specifications are different in curvature of two grooves) according to the diameter of the strain gauge rod body and the diameter of the deformed steel bar.
And 2, placing the mounting seat 3 at the position of the strain design measuring point, wherein the large groove at the lower part is clamped on the deformed steel bar 2, and the small groove at the upper part is clamped with the embedded strain 1 pair, so that the mounting seat is ensured to be centered in the length direction of the strain gauge.
And 3, another assistant person bypasses the embedded strain gauge 1, the quick mounting device 3 and the deformed steel bar 2 with the selected specification, and then the stainless steel ribbon 4 is locked by the limiting ball 5 through a special tensioner for the stainless steel ribbon. The width of stainless steel ribbon generally requires not less than 1cm, and then can guarantee that the axis does not twist after the strainometer installation is spacing. When the clamping effect of a single ribbon is not good, the clamping effect of the double ribbons can be considered to be realized along the two ends of the fixing device.
Meanwhile, the embedded strain gauge is arranged in the back direction of the concrete pouring as much as possible so as to avoid the axial line deviation and even damage of the strain gauge caused by impact and vibration disturbance of the back stream concrete pouring.
And the thickness of the mounting seat is about 4-5cm so as to ensure that the axes of the strain gauge and the screw-thread steel run all the time. The height is such that the force ring 7 of the embedded strain gauge does not contact the deformed steel bar 2 and is at least 5cm away from the deformed steel bar, so that the subsequent embedded strain gauge can be completely wrapped by concrete.
And 4, after the strain gauge is firmly clamped, fixing the leading-out cable 6 of the embedded type strain gauge 1 along the threaded steel bar.
And 5, completing the installation of the embedded strain gauge after ensuring the normal reading of the embedded 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 (6)
1. The utility model provides a bury quick installation device of formula concrete strain gauge which characterized in that, quick installation device includes mount pad (3) and stainless steel ribbon (4), the both sides of mount pad (3) are offered respectively and are used for the holding to bury the little recess of formula strain gauge (1) and be used for the big recess of holding screw-thread steel (2), through stainless steel ribbon (4) are tied up screw-thread steel (2), mount pad (3) and are buried formula strain gauge (1).
2. The quick installation device for an embedded concrete strain gauge according to claim 1, wherein the small groove and the large groove are kept parallel.
3. The quick installation device for the embedded concrete strain gauge according to claim 1, wherein the installation seat (3) is a rubber installation seat or a plastic installation seat.
4. The embedded concrete strain gauge quick installation device according to claim 1, wherein the width of the stainless steel tie (4) is not less than 1 cm.
5. The embedded concrete strain gauge quick mounting device according to claim 1, wherein the thickness of the mounting seat (3) is 4-5 cm.
6. The device for quickly installing the embedded concrete strain gauge according to any one of claims 1-5, wherein the inner wall of the large groove is provided with a plurality of grooves matched with the spiral protrusions on the surface of the deformed steel bar (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536303.3U CN216081410U (en) | 2021-10-21 | 2021-10-21 | Quick installation device of formula concrete strain meter burys |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122536303.3U CN216081410U (en) | 2021-10-21 | 2021-10-21 | Quick installation device of formula concrete strain meter burys |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216081410U true CN216081410U (en) | 2022-03-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122536303.3U Active CN216081410U (en) | 2021-10-21 | 2021-10-21 | Quick installation device of formula concrete strain meter burys |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216081410U (en) |
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2021
- 2021-10-21 CN CN202122536303.3U patent/CN216081410U/en active Active
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