CN203785950U - Unconfined compressive strength tester - Google Patents
Unconfined compressive strength tester Download PDFInfo
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- CN203785950U CN203785950U CN201420184895.4U CN201420184895U CN203785950U CN 203785950 U CN203785950 U CN 203785950U CN 201420184895 U CN201420184895 U CN 201420184895U CN 203785950 U CN203785950 U CN 203785950U
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- sample
- cushion cap
- digital dial
- dial gauge
- compression strength
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Abstract
The utility model provides an unconfined compressive strength tester which is used for measuring the unconfined compressive strength of a soil sample with high water content. The unconfined compressive strength tester is characterized by comprising a detection unit, a sample loading unit and a support frame, wherein the detection unit is used for detecting axial pressure and axial displacement; the sample loading unit is below the detection unit and used for loading a sample; the detection unit comprises a penetration rod, a force measuring ring, a first digital dial indicator and second digital dial indicators, wherein the penetration rod is used for applying axial force to the sample; a bearing plate with the size of 70.7mm*70.7mm*13mm is connected to the lower end of the penetration rod; the force measuring ring is arranged above the penetration rod and deforms under the action of the penetration rod; the first digital dial indicator is in the middle of the force measuring ring and used for detecting the deformation of the force measuring ring; the second digital dial indicators are connected to two sides of the penetration rod and used for detecting axial displacement; the digital dial indicators are connected with an adapter; and the adapter is connected to a data acquisition system. The unconfined compressive strength tester disclosed by the utility model satisfies the size requirements of the cubic soil sample with high water content and is capable of increasing the test precision and reducing the working intensity of testers.
Description
Technical field
The utility model relates to a kind of unconfined compression strength test instrument, belongs to instrument detection field.
Background technology
Unconfined compression strength test is to make sample under without side limit condition, applies axle pressure until sample destroys, and determines the technical operation of soil sample compressive strength.In process of the test, bearing plate need to fit tightly with each edge of soil sample.When measuring the unconfined compressive strength of the high-moisture soil sample between liquid limit and plastic limit, because high-moisture soil sample should not be hit the real conventional right cylinder sample of making 39.1mm*80mm, can only make by steel die the cuboid sample of 70.7mm*70.7mm*70.7mm.So the size of existing unconfined compression strength test instrument bearing plate cannot meet the demands.
In addition, in process of the test, operating personnel need to observe simultaneously and record axial displacement dial gauge and axial dynamometry dial gauge reading, then using respectively axial stress and axial strain as ordinate and horizontal ordinate, draw stress-strain curve, unconfined compressive strength is the maximum axial stress on curve.The observation of this machinery and the mode of record data, make experimenter's working strength very large, and data precision can not be guaranteed.
Utility model content
While using existing unconfined compressive strength experiment instrument in order to overcome, plate size cannot meet sample requirement and experimenter's working strength is large and the poor problem of data precision, and the utility model provides a kind of unconfined compression strength test instrument.
The utility model to achieve these goals, has adopted following structure:
The utility model provides a kind of unconfined compression strength test instrument, for the unconfined compressive strength of high-moisture soil sample, measures, and it is characterized in that, comprising: the detecting unit that detects axle pressure and axial displacement; Be positioned at detecting unit below and carry the sample load bearing unit of sample; And for the bracing frame of installation and measuring unit and sample load bearing unit.Wherein, detecting unit comprises: the injection bar that sample is applied to axial force, the lower end of this injection bar is connected with the bearing plate that is of a size of 70.7mm*70.7mm*13mm, be positioned at the ring of measuring one's own ability that deformation occurs under the effect of injection bar in injection bar top, be positioned at the first digital dial gauge becoming for detection of the annular of measuring one's own ability in the middle of the ring of measuring one's own ability, at least one second digital dial gauge of axial displacement is detected in the both sides that are connected to injection bar, the first digital dial gauge is connected with adapter with the second digital dial gauge, is connected to data acquisition system (DAS).Sample load bearing unit comprises: be positioned at bearing plate below for demarcating the upper cushion cap of axial location, be positioned at the fixed bar of cushion cap below fixing upper cushion cap, be positioned at fixed bar below and carry the lower cushion cap of sample, be positioned at lower cushion cap below and control the elevating mechanism of lower cushion cap lifting.
In addition, in unconfined compression strength test instrument of the present utility model, can also there is such feature, also comprise: dig at bearing plate surface and the dark groove of 3mm injection boom end same size.
In addition, in unconfined compression strength test instrument of the present utility model, can also there is such feature: wherein, fixed bar is three, be equilateral triangle and distribute.
In addition, in unconfined compression strength test instrument of the present utility model, can also there is such feature, also comprise: the balance leveling bubble that is attached at cushion cap upper surface.
In addition, in unconfined compression strength test instrument of the present utility model, can also there is such feature, also comprise: be connected to the console controller on elevating mechanism.
The effect of utility model and effect
According to unconfined compression strength test instrument of the present utility model, because plate size is 70.7mm*70.7mm*13mm, so meet the dimensional requirement of the high-moisture cube soil sample of 70.7mm*70.7mm*70.7mm.
In addition, because replaced axial displacement dial gauge and the axial dynamometry dial gauge of conventional mechanical formula with digital dial gauge, by adapter, be connected with data acquisition system (DAS), so realize the dynamic acquisition analysis to experimental data, thereby reduced test operation personnel's working strength when improving test accuracy.
Accompanying drawing explanation
Fig. 1 is the unconfined compression strength test instrument that relates to of the utility model front view in an embodiment;
Fig. 2 is the bearing plate that relates to of the utility model front view in an embodiment;
Fig. 3 is the bearing plate that relates to of the utility model vertical view in an embodiment;
Fig. 4 is the upper cushion cap that relates to of the utility model front view in an embodiment; And
Fig. 5 is the upper cushion cap that relates to of the utility model vertical view in an embodiment.
Embodiment
Referring to accompanying drawing, the related unconfined compression strength test instrument of the utility model is elaborated.
Fig. 1 is the unconfined compression strength test instrument that relates to of the utility model front view in an embodiment.
As shown in Figure 1, unconfined compression strength test instrument has bracing frame 1, measures one's own ability and encircle the digital dial gauge 4 of the 2, first digital dial gauge 3, second, injection bar 5, bearing plate 6, upper cushion cap 7, fixed bar 8, lower cushion cap 9, elevating mechanism 10, console controller 11, adapter 12 and data acquisition system (DAS) 13.
Bracing frame 1 is for installing measure one's own ability ring 2 and elevating mechanism 10.Ring 2 the one end of measuring one's own ability is connected with bracing frame 1, and the other end is connected with injection bar 5, understands generation deformation under the effect of injection bar 5.The first digital dial gauge 3 encircles 2 deformation in the middle of being positioned at the ring 2 of measuring one's own ability for detection of measuring one's own ability.The both sides that the second digital dial gauge 4 is connected to injection bar 5 are for detection of axial displacement.Injection bar 5 is positioned at the below of the ring 2 of measuring one's own ability, and high-moisture cube soil sample 14 is applied to axial force.Bearing plate 6 is connected to the below of injection bar 5, and during work and the top of high-moisture cube soil sample 14 fits tightly.Upper cushion cap 7 is positioned at bearing plate 6 belows for demarcating axial location.Fixed bar 8 is positioned at cushion cap 7 belows fixing upper cushion cap 7.Lower cushion cap 9 is positioned at fixed bar 8 belows and carries high-moisture cube soil sample 14.Elevating mechanism 10 is positioned at lower cushion cap 9 belows and controls lower cushion cap 9 liftings.Console controller 11 connects elevating mechanism 10, controls elevating mechanism and automatically moves.One end of adapter 12 is connected with the second digital dial gauge 4 with the first digital dial gauge 3, and the other end is connected with data acquisition system (DAS) 13.
The data that the data acquisition system (DAS) 13 digital dial gauge 3 of real-time dynamically recording analysis first and the second digital dial gauge 4 transmit, and draw stress-strain curve.
Fig. 2 is the bearing plate that relates to of the utility model front view in an embodiment.
Fig. 3 is the bearing plate that relates to of the utility model vertical view in an embodiment.
As shown in Figure 2,3, bearing plate 6 is of a size of 70.7mm*70.7mm*13mm, can fit tightly with high-moisture cube soil sample 14 each edges of 70.7mm*70.7mm*70.7mm.The dark groove 15 of 3mm that bearing plate 6 surfaces are furnished with same injection bar 5 end same sizes, can dock injection bar 5 belows.
Fig. 4 is the upper cushion cap that relates to of the utility model front view in an embodiment.
Fig. 5 is the upper cushion cap that relates to of the utility model vertical view in an embodiment.
As shown in Figure 4,5, upper cushion cap 7 is connected with fixed bar 8 by three screws 16, and fixed bar 8 is three, is equilateral triangle and distributes.Upper cushion cap 7 upper surfaces post balance leveling bubble 17.The interior circular diameter of upper cushion cap 7 is at least 90.97mm, can allow the high-moisture cube soil sample 14 of 70.7mm*70.7mm*70.7mm pass.
Use procedure: the second digital dial gauge 4 bottom measuring heads withstand on cushion cap 7 upper surfaces, the first digital dial gauge 3 is fixed on the ring 2 inner poles of measuring one's own ability.The high-moisture cube sample 14 of 70.7mm*70.7mm*70.7mm is placed on lower cushion cap 9, guarantees that the bottom of high-moisture cube soil sample 14 tops and bearing plate 6 fits tightly.Starting console controller 11, control elevating mechanism 10 and drive lower cushion cap 9 to rise, can there is deformation in the high-moisture cube soil sample 14 on lower cushion cap.Keep lower cushion cap 9 to rise with the speed of 1mm/min, until high-moisture cube soil sample 14 is destroyed.The first digital dial gauge 3 and the second digital dial gauge 4 can show displacement data and the annular variable of measuring one's own ability in real time, and by adapter 12 by data transfer to data acquisition system (DAS) 13, data acquisition system (DAS) 13 real time record are analyzed experimental data, and draw stress-strain curve, the unconfined compressive strength of high-moisture cube soil sample 14 is the maximum axial stress on curve.
Embodiment effect and effect
The unconfined compression strength test instrument related according to the present embodiment,
According to unconfined compression strength test instrument of the present utility model, because bearing plate 6 is of a size of 70.7mm*70.7mm*13mm, therefore, meet the dimensional requirement of the high-moisture cube soil sample 14 of 70.7mm*70.7mm*70.7mm.
In addition, because replaced axial displacement dial gauge and the axial dynamometry dial gauge of conventional mechanical formula with the first digital dial gauge 3 and the second digital dial gauge 4, and be connected with data acquisition system (DAS) 13 by adapter 12, therefore, the dynamic acquisition analysis of realization to experimental data, has reduced test operation personnel's working strength when improving test accuracy.
In addition, because fixed bar 8 is increased to three by two, be equilateral triangle and distribute, the degree of stability of cushion cap 7 in increase; And upper cushion cap 7 surfaces post the accurate bubble 17 in equilibrium water, can detect the balance of cushion cap 7, reduced the measuring error of axial displacement.
Certainly, the unconfined compression strength test instrument that the utility model relates to is not merely defined in structure in the present embodiment.
Under any, in technical field, have and conventionally know the knowledgeable, within not departing from spirit and scope of the present utility model, when being used for a variety of modifications and variations, therefore protection domain of the present utility model should be as the criterion with claims institute confining spectrum.
Claims (5)
1. a unconfined compression strength test instrument, measures for the unconfined compressive strength of high-moisture soil sample, it is characterized in that, comprising:
Detect the detecting unit of axle pressure and axial displacement;
Be positioned at described detecting unit below and carry the sample load bearing unit of described sample; And
For the bracing frame of described detecting unit and described sample load bearing unit is installed,
Wherein, described detecting unit comprises:
Described sample is applied to the injection bar of axial force, the lower end of this injection bar is connected with the bearing plate that is of a size of 70.7mm*70.7mm*13mm, be positioned at the ring of measuring one's own ability that deformation occurs under the effect of injection bar in described injection bar top, be positioned at the first digital dial gauge becoming for detection of the annular of measuring one's own ability in the middle of the ring of measuring one's own ability, at least one second digital dial gauge of axial displacement is detected in the both sides that are connected to described injection bar, described the first digital dial gauge is connected with adapter with the second digital dial gauge, described adapter is connected to data acquisition system (DAS)
Described sample load bearing unit comprises:
Be positioned at described bearing plate below for demarcating the upper cushion cap of axial location, be positioned at the fixed bar of described upper cushion cap below fixing upper cushion cap, be positioned at described fixed bar below and carry the lower cushion cap of sample, be positioned at described lower cushion cap below and control the elevating mechanism of lower cushion cap lifting.
2. unconfined compression strength test instrument according to claim 1, is characterized in that, also comprises: dig at described bearing plate surface and the dark groove of 3mm described injection boom end same size.
3. unconfined compression strength test instrument according to claim 1, is characterized in that:
Wherein, described fixed bar is three, is equilateral triangle and distributes.
4. unconfined compression strength test instrument according to claim 1, is characterized in that, also comprises: the balance leveling bubble that is attached at described upper cushion cap upper surface.
5. unconfined compression strength test instrument according to claim 1, is characterized in that,
Also comprise: be connected to the console controller on described elevating mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184895.4U CN203785950U (en) | 2014-04-16 | 2014-04-16 | Unconfined compressive strength tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420184895.4U CN203785950U (en) | 2014-04-16 | 2014-04-16 | Unconfined compressive strength tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785950U true CN203785950U (en) | 2014-08-20 |
Family
ID=51322127
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420184895.4U Expired - Fee Related CN203785950U (en) | 2014-04-16 | 2014-04-16 | Unconfined compressive strength tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203785950U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124290A (en) * | 2016-06-01 | 2016-11-16 | 宋娟 | A kind of rock mechanics parameters rectifies an instrument |
| CN107631934A (en) * | 2017-10-26 | 2018-01-26 | 新疆大学 | A kind of high temperature is without confining pressure instrument |
| CN108489823A (en) * | 2018-03-30 | 2018-09-04 | 青岛理工大学 | A kind of strain controlling formula low temperature unconfined compression apparatus |
| CN110346081A (en) * | 2019-06-26 | 2019-10-18 | 中交第一航务工程勘察设计院有限公司 | Digital display ring system digit rate of measuring one's own ability determines device |
-
2014
- 2014-04-16 CN CN201420184895.4U patent/CN203785950U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124290A (en) * | 2016-06-01 | 2016-11-16 | 宋娟 | A kind of rock mechanics parameters rectifies an instrument |
| CN107631934A (en) * | 2017-10-26 | 2018-01-26 | 新疆大学 | A kind of high temperature is without confining pressure instrument |
| CN108489823A (en) * | 2018-03-30 | 2018-09-04 | 青岛理工大学 | A kind of strain controlling formula low temperature unconfined compression apparatus |
| CN110346081A (en) * | 2019-06-26 | 2019-10-18 | 中交第一航务工程勘察设计院有限公司 | Digital display ring system digit rate of measuring one's own ability determines 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 |
Granted publication date: 20140820 Termination date: 20150416 |
|
| EXPY | Termination of patent right or utility model |