CN207557015U - A kind of easy device for measuring Bending Concrete amount of deflection - Google Patents
A kind of easy device for measuring Bending Concrete amount of deflection Download PDFInfo
- Publication number
- CN207557015U CN207557015U CN201721370914.2U CN201721370914U CN207557015U CN 207557015 U CN207557015 U CN 207557015U CN 201721370914 U CN201721370914 U CN 201721370914U CN 207557015 U CN207557015 U CN 207557015U
- Authority
- CN
- China
- Prior art keywords
- fixture
- contraposition
- sliding beam
- displacement sensor
- pressure head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000005452 bending Methods 0.000 title claims abstract description 13
- 230000003287 optical effect Effects 0.000 claims abstract description 20
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000002474 experimental method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The purpose of this utility model is to provide for a kind of easy device for measuring Bending Concrete amount of deflection, is made of fixture, sliding beam 21, pressure head 31 and 41 4 part of contraposition connector.Wherein fixture includes two optical axises 12 of two symmetrical " inverted U " fixtures 11 and bearing sliding beam 21, and 11 top of " inverted U " fixture is stayed there are two bolt hole 13, for fastening leveling bolt；Nearby there are two circular cavities 23 and 22 for 21 axis of sliding beam, are respectively used to fixed contraposition bar 42 and displacement sensor；Pressure head 31 loads for hydraulic end head；Contraposition connector 41 is fastenedly connected by optical axis in 31 both ends of pressure head, for fixed contraposition bar 42 and displacement sensor.The utility model is used for the deflection metrology in concrete beam test, and advantage is greatly improved for measurement accuracy, and simple structure, easy to operate.
Description
Technical field
The utility model is used for the deflection metrology in concrete beam test.
Background technology
In concrete beam test, the sag of test specimen is the important evidence evaluated material stiffness, be bent toughness,
Measurement accuracy directly affects the confidence level of result of calculation.Traditional deflection metrology method is mostly using mounted on the position of test specimen bottom
Displacement sensor record bottom bend deformation directly utilizes the displacement sensor record top displacement for loading end.This kind of measurement
The displacement that method measures both includes test specimen amount of deflection, and also including deformation and loading end juxtaposition metamorphose etc. at bearing, error is larger.To carry
High measurement accuracy usually installs auxiliary clamp on test specimen central axes, to provide test benchmark point.And during experiment, base
It is easily destroyed on schedule, measures position and easily disturbed, and measuring device is often complex, it is inconvenient.
Invention content
The purpose of this utility model is to provide for a kind of easy device for measuring Bending Concrete amount of deflection, by fixture, slides
Crossbeam, pressure head and four part of contraposition connector composition.Wherein fixture includes two symmetrical " inverted U " fixtures and bearing sliding beam
Two optical axises, " inverted U " fixture top is stayed there are two bolt hole, for fastening leveling bolt；Sliding beam axis nearby stays
There are two hole, left hole hole and right hole holes, are respectively used to fixed contraposition bar and displacement sensor；Pressure head adds for hydraulic end head
It carries；Contraposition connector is fastenedly connected by optical axis in pressure head both ends, for fixed contraposition bar and displacement sensor.
As an improvement, contraposition bar and displacement sensor are fixed on sliding beam, sliding beam is overlapped on both sides fixture
Optical axis on, by align bar with contraposition connector connect with ensure measure position, and optical axis and both sides fixture holding it is relatively quiet
Only, so that it is guaranteed that displacement sensor is opposing stationary with concrete sample, error caused by this avoid being deformed at bearing.
As an improvement, the sliding beam being overlapped on fixture can be free to slide in the horizontal direction, compared to both ends geometrical clamp
Tool or single-sided sliding fixture, the error for test benchmark point being caused to destroy The method avoids test piece deformation and being brought.
As an improvement, it is stayed on fixture top there are two bolt hole, for fastening leveling bolt.
As an improvement, this covering device, only by fixture, sliding beam, pressure head and four part of contraposition connector form, simple structure,
It is easy to operate.
Description of the drawings
Fig. 1 be it is this measure Bending Concrete amount of deflection easy device front view, " inverted U " fixture 11, optical axis 12, slide
Crossbeam 21, pressure head 31 align connector 41.
Fig. 2 be it is this measure Bending Concrete amount of deflection easy device vertical view, " inverted U " fixture 11, optical axis 12, leveling
Bolt hole 13, sliding beam 21, displacement sensor hole 22 align rod aperture 23, and pressure head 31 aligns connector 41.
Fig. 3 be it is this measure Bending Concrete amount of deflection easy device fundamental diagram, " inverted U " fixture 11, optical axis 12,
Sliding beam 21, pressure head 31 align connector 41, align bar 42, concrete sample 5.
Specific embodiment
With reference to the accompanying drawings, the purpose of this utility model is to provide for a kind of easy device for measuring Bending Concrete amount of deflection, by
Fixture, sliding beam 21, pressure head 31 and 41 4 part of contraposition connector composition.Wherein fixture is pressed from both sides including two symmetrical " inverted U "
Two optical axises 12 of tool 11 and bearing sliding beam 21,11 top of " inverted U " fixture are stayed there are two bolt hole 13, are adjusted for fastening
Flat bolt；Nearby there are two circular cavities, left hole hole 23 and right hole holes 22 for 21 axis of sliding beam, are respectively used to fixed contraposition bar 42
And displacement sensor；Pressure head 31 loads for hydraulic end head；Contraposition connector 41 is fastenedly connected by optical axis in 31 both ends of pressure head,
For fixed contraposition bar 42 and displacement sensor.
With reference to the accompanying drawings, this easy device for measuring Bending Concrete amount of deflection is by both sides fixture 11, four optical axises 12 two
Root sliding beam 21, a pressure head 31 and two contraposition connectors 41 form.The use process of this covering device：By both sides fixture 11
The both ends of concrete sample 5 are fastened on by optical axis 12, by being located at the leveling bolt leveling on 11 top of fixture, sliding beam
21 are overlapped in optical axis 12, and contraposition connector 41 is fastenedly connected by optical axis in 31 both ends of pressure head, aligns bar 42 and displacement sensor is consolidated
Due to contraposition connector 41 and the preformed hole of sliding beam 21.When hydraulic end head by pressure head 31 to adding at 5 centre of form of concrete sample
During pressure, contraposition bar keeps balance and stabilization of the sliding beam 21 relative to pressure head 31, and concrete sample 5 occurs bending and deformation, position
Displacement sensor is fixed on axis line position always, and sliding beam can be free to slide relative to optical axis in the horizontal direction, avoids
Test benchmark point is affected during experiment.So the measurement result of this covering device fully meets test requirements document.
Claims (3)
1. a kind of easy device for measuring Bending Concrete amount of deflection, by fixture, sliding beam (21), pressure head (31) and contraposition connector
(41) four parts form, it is characterised in that：Fixture includes two symmetrical " inverted U " fixtures (11) and bearing sliding beam (21)
Two optical axises (12), " inverted U " fixture (11) top is stayed there are two bolt hole (13), for fastening leveling bolt；It slides horizontal
For beam (21) axis nearby there are two circular cavities, left hole hole (23) and right hole hole (22) are respectively used to fixed contraposition bar (42) and position
Displacement sensor；Pressure head (31) loads for hydraulic end head；Contraposition connector (41) is fastenedly connected by optical axis in pressure head (31) both ends,
For fixed contraposition bar (42) and displacement sensor.
2. a kind of easy device for measuring Bending Concrete amount of deflection according to claim 1, it is characterised in that：Bar will be aligned
(42) it being fixed on sliding beam (21) with displacement sensor, sliding beam (21) is overlapped on the optical axis (12) of both sides fixture,
It is connect by aligning bar (42) with contraposition connector (41) to ensure to measure position, and optical axis (12) is kept with both sides fixture (11)
It is opposing stationary, so that it is guaranteed that displacement sensor and concrete sample (5) are opposing stationary, caused by being deformed at bearing
Error.
3. a kind of easy device for measuring Bending Concrete amount of deflection according to claim 1, it is characterised in that：It is overlapped on folder
The sliding beam (21) having on (11) can be free to slide in the horizontal direction, is pressed from both sides compared to both ends stationary fixture or single-sided sliding
Tool, the error for test benchmark point being caused to destroy The method avoids test piece deformation and being brought.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370914.2U CN207557015U (en) | 2017-10-23 | 2017-10-23 | A kind of easy device for measuring Bending Concrete amount of deflection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721370914.2U CN207557015U (en) | 2017-10-23 | 2017-10-23 | A kind of easy device for measuring Bending Concrete amount of deflection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207557015U true CN207557015U (en) | 2018-06-29 |
Family
ID=62674530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721370914.2U Expired - Fee Related CN207557015U (en) | 2017-10-23 | 2017-10-23 | A kind of easy device for measuring Bending Concrete amount of deflection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207557015U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665126A (en) * | 2020-07-24 | 2020-09-15 | 天津城建大学 | Improved concrete prism bending elastic modulus measuring device |
| CN113218754A (en) * | 2021-04-23 | 2021-08-06 | 河海大学 | Device and method for testing deflection of precast crack concrete specimen |
-
2017
- 2017-10-23 CN CN201721370914.2U patent/CN207557015U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111665126A (en) * | 2020-07-24 | 2020-09-15 | 天津城建大学 | Improved concrete prism bending elastic modulus measuring device |
| CN113218754A (en) * | 2021-04-23 | 2021-08-06 | 河海大学 | Device and method for testing deflection of precast crack concrete specimen |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180629 Termination date: 20191023 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |