CN208223719U - A kind of strain gauge experimental rig - Google Patents
A kind of strain gauge experimental rig Download PDFInfo
- Publication number
- CN208223719U CN208223719U CN201820907581.0U CN201820907581U CN208223719U CN 208223719 U CN208223719 U CN 208223719U CN 201820907581 U CN201820907581 U CN 201820907581U CN 208223719 U CN208223719 U CN 208223719U
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- anchor bolt
- sleeve
- strain gauge
- experimental rig
- hole
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- Force Measurement Appropriate To Specific Purposes (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of strain gauge experimental rig, the test device including being mounted on anchor bolt one end, the test device include sleeve, and the through-hole passed through for anchor bolt is arranged in the bottom of sleeve, and anchor bolt is connect after passing through through-hole with the pressure sensor that sleeve inner is arranged in.The fixation device fastened to pressure sensor is installed in the anchor bolt.Compared with the existing technology, this practical true force-bearing situation for leading to the novel tube-in-tube structure simulation strain gauge for crossing setting, is effectively reduced unbalance loading, carries out pressure testing and fatigue test, result credibility are higher；By the positioning sleeve of setting, the strain gauge of plurality of specifications can be carried out and anchor bolt is tested.
Description
Technical field
The utility model relates to a kind of experimental rig, specifically a kind of prestressed bolt biosensor assay device.
Background technique
Prestressed bolt is prestressing force blower foundation nuclear structure part, and the effective stress that prestressed bolt is able to maintain is big
Small most important for the working performance on entire basis, stress loss is smaller, the operation stability of total and reliable
Property is higher.Wind power plant substantially belongs to blank in terms of anchor bolt prestressed monitoring at present, and when blower foundation tensioning only tests anchor bolt
Prestressing force load before drawing does not detect the prestressing force load of anchor bolt after completion tensioning, can not also calculate completion
Loss of prestress after drawing.Anchor bolt strain gauge is mainly used for the prestressed monitoring of prestressed bolt, and anchor bolt itself is born
Tensile stress, strain gauge bear the compression of anchor bolt nut and gasket transmitting, and the test and calibration of moment sensor are usually adopted
Directly apply pressure loading with normal pressure machine, press machine, which applies the operating condition of load and the real working condition of strain gauge, to be had centainly
Difference is unable to satisfy the needs of strain gauge test.Therefore, it is necessary to provide a kind of novel prestressed bolt stress sensing
Device experimental rig meets the specific demand of actual stress biosensor assay to overcome drawbacks described above.
Utility model content
Based on above-mentioned the shortcomings of the prior art, the utility model provides a kind of strain gauge experimental rig, with solution
Problem certainly of the existing technology.
The utility model uses following technical scheme:
A kind of strain gauge experimental rig, the test device including being mounted on anchor bolt one end, the test device include
Sleeve 1, the bottom of sleeve 1 are arranged the through-hole passed through for anchor bolt, anchor bolt 3 pass through after through-hole with the pressure that is arranged in inside sleeve 1
Sensor 4 connects.
The fixation device fastened to pressure sensor is installed in the anchor bolt 3.
The test device is mounted on the anchor bolt end of thread, and the fixed device described at this time is the end of thread for being screwed onto anchor bolt 3
Nut 5, pressure sensor 4 are fastened between 1 bottom of sleeve and nut 5.
It further include the positioning sleeve 2 being arranged between pressure sensor 4 and through-hole, positioning sleeve 2, which has, to be embedded in the through-hole
Annular convex platform.
The head of the sleeve is the thin shaft end connecting with pressure testing machine clamp, the diameter of diameter and pressure testing machine
It is consistent.
The aperture of installation pressure sensor 4 and fixed device is provided on 1 side wall of sleeve.
Compared with the existing technology, this practical true stress shape for leading to the novel tube-in-tube structure simulation strain gauge for crossing setting
Unbalance loading is effectively reduced in condition, carries out pressure testing and fatigue test, result credibility are higher；Pass through the positioning sleeve of setting, Ke Yijin
The strain gauge and anchor bolt of row plurality of specifications are tested.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the utility model sleeve.
Fig. 3 is the structural schematic diagram of the utility model positioning sleeve.
Fig. 4 is the first function implementation of the utility model.
Fig. 5 is second of function implementation of the utility model.
In figure, 1 sleeve, 2 positioning sleeves, 3 anchor bolts, 4 strain gauges, 5 nuts, 6 anchor bolts.
Specific embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
As shown in Fig. 1 ~ 5, a kind of strain gauge experimental rig provided by the utility model, for being mounted on the end of anchor bolt
Portion carries out relevant stress test.Specifically, including test device, test device include internal for hollow sleeve 1, sleeve
1 end is the thin shaft end connecting with the fixture of pressure testing machine, and the diameter of thin shaft end should be with the fixture of pressure testing machine
Diameter is consistent, and pressure testing machine is facilitated to be clamped.Arc transition is used between the thin shaft end of sleeve and middle part.
The bottom of the other end of sleeve 1 opens up through-hole, which passes through for anchor bolt 3 and tested, and also sets up inside sleeve 1
Pressure sensor 4 is connect after anchor bolt 3 passes through through-hole with pressure sensor 4, carries out related pressure test by pressure sensor.
In order to facilitate test, pressure sensor 4, which is fixed device, to be prohibited admittedly between 1 bottom end of sleeve and clamp device, works as survey
When the end of thread for being mounted on bolt is set in trial assembly, which selects nut 5, after the end of thread of anchor bolt 3 is extend into through-hole, pressure
Force snesor 4 and nut 5 pass through the aperture being arranged on 1 side wall of sleeve and are installed in sleeve 1, by tightening nut 5, by pressure
Sensor 4 is fixed between nut 5 and sleeve bottom.Above-mentioned aperture may be selected to be rectangular opening.
Since different 3 diameters of anchor bolt is different, for the scope of application for improving test device, the through-hole diameter of 1 bottom of sleeve
Open up it is larger, at this point, the test device of the utility model needs to include that positioning sleeve between pressure sensor 4 and through-hole is arranged in
2, positioning sleeve possesses plurality of specifications, and different internal diameter series is arranged, and the sensor and anchor bolt that can allow different size are tested,
As shown in Fig. 2 ~ 3, by changing the internal diameter D4 of positioning sleeve 2, the auxiliary connection of different-diameter can be positioned, so as to arrange in pairs or groups
The auxiliary connection of different-diameter is tested.Specifically, positioning sleeve 2 has the annular convex platform in insertion through-hole, annular convex platform
Overall diameter is consistent with the diameter of through-hole or is slightly less than through-hole diameter, is conveniently installed into through-hole, and the interior diameter of annular convex platform
It is consistent with the diameter of anchor bolt or be slightly larger than anchor bolt diameter, facilitate installation anchor bolt 3.
Installation site when according to application, the utility model provide at least two embodiments:
The first specific embodiment is as shown in Figure 4.A set of anchor bolt 3 and one group of strain gauge 4 are used in this example,
It is made of the screwed anchor bolt 3 in one end, strain gauge 4, nut 5, sleeve 1.The end A (the i.e. thin axis of gripper sleeve 1 first
End), it is put into from the aperture of 1 side of sleeve by positioning sleeve 2 matched with anchor bolt 3, strain gauge 4, nut 5, then by anchor bolt 3
Threaded one end passes through positioning sleeve 2 and strain gauge 4 screws in nut 5.The not threaded one end B of anchor bolt 3 is clamped later.Most
Afterwards, sleeve 1 and anchor bolt 3 are finely tuned to almost coaxial, correlation test can be carried out.
Second of specific embodiment as shown in figure 5, in this example use a set of anchor bolt 3 and two groups of strain gauges 4,
It is made of the screwed anchor bolt 6 in both ends, strain gauge 4, nut 5, sleeve 1.Firstly, two collet distance of testing machine is adjusted to
Greater than 6 overall length of anchor bolt, from the opening of 1 side of tooling sleeve of any end will positioning sleeve 2 matched with anchor bolt 6, stress sensing
Device 4, nut 5 are put into, and 6 one end of anchor bolt is then passed through positioning sleeve 2 and strain gauge 4 screws in nut 5.Movable chuck later
Penetrate the other end of anchor bolt 6 in the hole in another sleeve 1, later mount stress sensor 4, with nut 5.Finally, by two
Sleeve 1 and anchor bolt 6 are finely tuned to almost coaxial, and the C-terminal of gripper sleeve 1 and the end D, can carry out correlation test respectively.
Above-described is only preferred embodiments of the present invention, it is noted that for those skilled in the art
For, under the premise of not departing from the utility model general idea, several changes and improvements can also be made, these also should be considered as
The protection scope of the utility model.
Claims (6)
1. a kind of strain gauge experimental rig, it is characterised in that: the test device including being mounted on anchor bolt one end, the test
Device includes sleeve (1), and the bottom of sleeve (1) is arranged the through-hole passed through for anchor bolt (3), anchor bolt (3) pass through after through-hole with setting
In internal pressure sensor (4) connection of sleeve (1).
2. a kind of strain gauge experimental rig according to claim 1, it is characterised in that: installed on the anchor bolt (3)
There is the fixation device fastened to pressure sensor.
3. a kind of strain gauge experimental rig according to claim 2, it is characterised in that: the test device is mounted on
The anchor bolt end of thread, the fixed device described at this time are the nut (5) for being screwed onto the end of thread of anchor bolt (3), pressure sensor (4) fastening
Between sleeve (1) bottom and nut (5).
4. a kind of strain gauge experimental rig according to claim 1, it is characterised in that: further include that setting is passed in pressure
Positioning sleeve (2) between sensor (4) and through-hole, positioning sleeve (2) have the annular convex platform being embedded in the through-hole.
5. a kind of strain gauge experimental rig according to claim 1, it is characterised in that: the head of the sleeve be with
The thin shaft end of pressure testing machine clamp connection, diameter are consistent with the diameter of pressure testing machine.
6. a kind of strain gauge experimental rig according to claim 2, it is characterised in that: on sleeve (1) side wall
It is provided with the aperture of installation pressure sensor (4) and fixed device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907581.0U CN208223719U (en) | 2018-06-12 | 2018-06-12 | A kind of strain gauge experimental rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820907581.0U CN208223719U (en) | 2018-06-12 | 2018-06-12 | A kind of strain gauge experimental rig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208223719U true CN208223719U (en) | 2018-12-11 |
Family
ID=64504673
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820907581.0U Active CN208223719U (en) | 2018-06-12 | 2018-06-12 | A kind of strain gauge experimental rig |
Country Status (1)
| Country | Link |
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| CN (1) | CN208223719U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109820568A (en) * | 2019-02-19 | 2019-05-31 | 深圳市世格赛思医疗科技有限公司 | A kind of pretightning force applying method, the apparatus and system of piezoelectric ceramic ultrasonic transducer |
-
2018
- 2018-06-12 CN CN201820907581.0U patent/CN208223719U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109820568A (en) * | 2019-02-19 | 2019-05-31 | 深圳市世格赛思医疗科技有限公司 | A kind of pretightning force applying method, the apparatus and system of piezoelectric ceramic ultrasonic transducer |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
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| CP03 | Change of name, title or address |
Address after: No. 311, Science Avenue, High-tech Zone, Zhengzhou City, Henan Province, 450000 Patentee after: China Shipbuilding Haiwei High tech Co.,Ltd. Address before: 450001 NO.311, science Avenue, high tech Zone, Zhengzhou City, Henan Province Patentee before: HAIWEI ZHENGZHOU HIGH TECHNOLOGY Co.,Ltd. |