CN203443711U - Fixture vibrating string-type fiber rib tension measuring device - Google Patents
Fixture vibrating string-type fiber rib tension measuring device Download PDFInfo
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- CN203443711U CN203443711U CN201320577788.3U CN201320577788U CN203443711U CN 203443711 U CN203443711 U CN 203443711U CN 201320577788 U CN201320577788 U CN 201320577788U CN 203443711 U CN203443711 U CN 203443711U
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Abstract
The utility model belongs to the technical field of in-situ test equipment, relates to a fixture vibrating string-type fiber rib tension measuring device. A force measuring device is arranged on an upper portion of the whole device; the force measuring device comprises pressing blocks, a vibrating string, a permanent magnet, a coil, a soft iron block, fastening screws and a pressure sensing film; two ends of the vibrating string are fixed on the pressing blocks through the fastening screws; the pressing block at the bottom end of the force measuring device is arranged on the pressure sensing film; the soft iron block is fixed on the vibrating string; one end of the permanent magnet is in butt joint with the soft iron block; the other end of the permanent magnet is provided with the coil; screw holes are uniformly distributed at two sides of the force measuring device respectively; an upper groove is formed below the force measuring device; a lower groove which is corresponding to the upper groove is formed in a lower portion of the whole device; and the upper part and the lower part of the whole device are connected with each other through bolts so as to form one integrated body. The fixture vibrating string-type fiber rib tension measuring device is advantageous in simple structure, convenient operation, small size, light weight, convenient installation, measurement and reading.
Description
Technical field:
The utility model belongs to in-situ test equipment technical field, relate to a kind of fixture type vibration wire fiber bar tension measuring device, tensile test for civil engineering work in-situ test fiber bar, make up the deficiency that the pulling force of fiber bar can only be tested in laboratory, convenience quick for installation, method of operating is simple.
Background technology:
At present, in civil engineering construction, apply gradually various new materials, for example, in reinforced soil retaining wall, adopt fiber bar as reinforcement, the electronic puller system of existing dynameter only can, in the indoor tensile strength of measuring fiber bar, there is not yet and can be used for open use and the relevant report that the tension measurement equipment of fiber reinforced material tensile test is carried out at scene.Therefore, design a kind of fixture type vibration wire fiber bar tension measuring device for on-the-spot test and there is important social reality meaning.
Summary of the invention:
Goal of the invention of the present utility model is to overcome the shortcoming that prior art exists, seek design a kind of fixture type vibration wire fiber bar tension measuring device is provided, principle according to reinforcement stresses instrumentation examination reinforcement stresses, after being combined with fixture, the dynamometry part of type vibration wire reinforcing rib meter is fixed on fiber bar, when fiber bar is stressed, tautness meter frequency stressed and then dynamometry part is changed, thereby measure pulling force.
To achieve these goals, one-piece construction of the present utility model is divided into upper and lower two parts, comprises device for measuring force, screw, upper groove, low groove and bolt; Device for measuring force adopts string-vibrating force-measuring device, and device for measuring force is arranged on the top of whole device; Device for measuring force comprises briquetting, vibratory string, permanent magnet, coil, soft iron piece, trip bolt and pressure-sensitive diaphragm; The two ends of vibratory string are fixed on briquetting by trip bolt respectively, and the briquetting of bottom is placed on pressure-sensitive diaphragm; On vibratory string, be fixedly shaped with soft iron piece; Dock with soft iron piece one end of the permanent magnet of U-shaped structure, is shaped with coil on the other end; The both sides of device for measuring force are uniformly distributed respectively and are shaped with screw, and the top of screw is smooth structure, and the bottom of screw is helicitic texture; Device for measuring force below has upper groove, and the bottom of whole device and upper groove corresponding position have low groove, and the concave surface of upper groove and low groove is helicoid, and the end of upper groove and low groove is rounding; The employing of two parts up and down of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device with the bolt of screw same structure.
The pass of the stress of the tension measuring device that the utility model relates to and frequency modulus and temperature is: when ambient temperature constant, when device for measuring force is only subject to axial deformation, the stress σ ' of device for measuring force and the variable quantity △ F of the frequency modulus of output have following linear relationship:
σ′=k×△F （1）
△F=F-F
0 （2）
Wherein, the least count that k is device for measuring force, unit is MPa; △ F be the device for measuring force output valve measured in real time with respect to the variable quantity of reference value, unit is kHz
2; F is the device for measuring force output valve of measuring in real time, and unit is kHz
2; F
0for the reference value of device for measuring force, unit is kHz
2; During use, first fiber bar is put on tautness meter low groove, the top of whole device and bottom are fixed with bolt after becoming reconciled, make upper and lower two parts laminating closely, under pulling force effect, between fiber bar and whole device, the changing of the relative positions does not occur; Use again the external type vibration wire readout instrument reading out data of device for measuring force, according to parameter index, the data that read and the formula (1) of device and (2) pulling force of calculating fiber bar; Device is measured initial value after location is installed in time, and performs record and preserve according to instrument numbering and design number.
Compared with prior art, it is simple in structure for the utility model, and easy to operate, volume is little, lightweight, is convenient to installation and survey and reads.
Accompanying drawing explanation:
Fig. 1 is structural principle schematic diagram of the present utility model, and wherein (a) is cross-section structure principle schematic, is (b) plan structure principle schematic.
Fig. 2 is the structural principle schematic diagram of the device for measuring force that relates to of the utility model.
Fig. 3 is the bolt arrangement principle schematic that the utility model relates to.
Embodiment:
Below by embodiment, also the present invention will be further described by reference to the accompanying drawings.
Embodiment:
The one-piece construction of the present embodiment is divided into upper and lower two parts, comprises device for measuring force 1, screw 2, upper groove 3, low groove 4 and bolt 5; Device for measuring force 1 adopts string-vibrating force-measuring device, and device for measuring force 1 is arranged on the top of whole device; Device for measuring force 1 comprises briquetting 6, vibratory string 7, permanent magnet 8, coil 9, soft iron piece 10, trip bolt 11 and pressure-sensitive diaphragm 12; The two ends of vibratory string 7 are fixed on briquetting 6 by trip bolt 11 respectively, and the briquetting 6 of bottom is placed on pressure-sensitive diaphragm 12; On vibratory string 7, be fixedly shaped with soft iron piece 10; Dock with soft iron piece 10 one end of the permanent magnet 8 of U-shaped structure, is shaped with coil 9 on the other end; The both sides of device for measuring force 1 are uniformly distributed respectively and are shaped with screw 2, and the top of screw 2 is smooth structure, and the bottom of screw 2 is helicitic texture; Device for measuring force 1 below has upper groove 3, and the bottom of whole device and upper groove 3 corresponding positions have low groove 4, and the concave surface of upper groove 3 and low groove 4 is helicoid, and the end of upper groove 3 and low groove 4 is rounding; The employing of two parts up and down of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device with the bolt 5 of screw 2 same structures.
The pass of the stress of the tension measuring device that the present embodiment relates to and frequency modulus and temperature is: when ambient temperature constant, when device for measuring force 1 is only subject to axial deformation, the stress σ ' of device for measuring force 1 and the variable quantity △ F of the frequency modulus of output have following linear relationship:
σ′=k×△F （1）
△F=F-F
0 （2）
Wherein, k is the least count of device for measuring force 1, and unit is MPa; △ F be the output valve of the device for measuring force 1 measured in real time with respect to the variable quantity of reference value, unit is kHz
2; F is the output valve of the real-time device for measuring force 1 of measuring, and unit is kHz
2; F
0for the reference value of device for measuring force 1, unit is kHz
2; During use, first fiber bar is put on low groove 4, the top of whole device and bottom is fixing to use bolt 5 after becoming reconciled, make upper and lower two parts laminating closely, under pulling force effect, between fiber bar and whole device, there is not the changing of the relative positions; Use again the type vibration wire readout instrument reading out data external with device for measuring force 1, according to parameter index, the data that read and the formula (1) of device and (2) pulling force of calculating fiber bar; Device is measured initial value after location is installed in time, and performs record and preserve according to instrument numbering and design number.
Claims (1)
1. a fixture type vibration wire fiber bar tension measuring device, is characterized in that one-piece construction is divided into upper and lower two parts, comprises device for measuring force, screw, upper groove, low groove and bolt; Device for measuring force adopts string-vibrating force-measuring device, and device for measuring force is arranged on the top of whole device; Device for measuring force comprises briquetting, vibratory string, permanent magnet, coil, soft iron piece, trip bolt and pressure-sensitive diaphragm; The two ends of vibratory string are fixed on briquetting by trip bolt respectively, and the briquetting of bottom is placed on pressure-sensitive diaphragm; On vibratory string, be fixedly shaped with soft iron piece; Dock with soft iron piece one end of the permanent magnet of U-shaped structure, is shaped with coil on the other end; The both sides of device for measuring force are uniformly distributed respectively and are shaped with screw, and the top of screw is smooth structure, and the bottom of screw is helicitic texture; Device for measuring force below has upper groove, and the bottom of whole device and upper groove corresponding position have low groove, and the concave surface of upper groove and low groove is helicoid, and the end of upper groove and low groove is rounding; The employing of two parts up and down bolt of whole device is connected to one and forms fixture type vibration wire fiber bar tension measuring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577788.3U CN203443711U (en) | 2013-09-17 | 2013-09-17 | Fixture vibrating string-type fiber rib tension measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320577788.3U CN203443711U (en) | 2013-09-17 | 2013-09-17 | Fixture vibrating string-type fiber rib tension measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203443711U true CN203443711U (en) | 2014-02-19 |
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ID=50094749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320577788.3U Expired - Fee Related CN203443711U (en) | 2013-09-17 | 2013-09-17 | Fixture vibrating string-type fiber rib tension measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203443711U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439033A (en) * | 2013-09-17 | 2013-12-11 | 青岛理工大学 | Clamp vibrating wire type tension measuring device for fiber rib |
| CN104115755A (en) * | 2014-07-11 | 2014-10-29 | 苏州柏德纳科技有限公司 | Stirring rod fixing device |
| CN110455441A (en) * | 2019-07-24 | 2019-11-15 | 河海大学 | A kind of external tendon prestressing force testing auxiliary device |
-
2013
- 2013-09-17 CN CN201320577788.3U patent/CN203443711U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439033A (en) * | 2013-09-17 | 2013-12-11 | 青岛理工大学 | Clamp vibrating wire type tension measuring device for fiber rib |
| CN103439033B (en) * | 2013-09-17 | 2016-02-10 | 青岛理工大学 | A kind of fixture type vibration wire fiber bar tension measuring device |
| CN104115755A (en) * | 2014-07-11 | 2014-10-29 | 苏州柏德纳科技有限公司 | Stirring rod fixing device |
| CN110455441A (en) * | 2019-07-24 | 2019-11-15 | 河海大学 | A kind of external tendon prestressing force testing auxiliary device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140219 Termination date: 20190917 |