CN108489823A - A kind of strain controlling formula low temperature unconfined compression apparatus - Google Patents
A kind of strain controlling formula low temperature unconfined compression apparatus Download PDFInfo
- Publication number
- CN108489823A CN108489823A CN201810295726.0A CN201810295726A CN108489823A CN 108489823 A CN108489823 A CN 108489823A CN 201810295726 A CN201810295726 A CN 201810295726A CN 108489823 A CN108489823 A CN 108489823A
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- CN
- China
- Prior art keywords
- temperature
- temperature control
- rock sample
- thermal insulation
- fuselage
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0228—Low temperature; Cooling means
Abstract
The invention belongs to geotechnical engineerings and soil test field, are related to geotechnical engineering laboratory testing rig and test method, more particularly to a kind of strain controlling formula low temperature unconfined compression apparatus；Its agent structure includes loading frame, vertical dynamometer, uploads pressing plate, rock sample, electronic handwheel, vertical displacement meter, handle, lifter plate, thermal insulation case, Wen Xianping, temperature control button, movable pulley, temperature control fuselage, connecting rod, lower pressure transmission plate and fixed link；The compression strength characteristic of the ground (soil body) in severe cold area can accurately be measured；The detection influence of the anti-pressure ability of sample and temperature to ground (soil body) strength characteristics at low temperature in real time.
Description
Technical field：
The invention belongs to geotechnical engineerings and soil test field, are related to geotechnical engineering laboratory testing rig and test method,
More particularly to a kind of strain controlling formula low temperature unconfined compression apparatus.
Background technology：
In civil engineering experiment, for rock mechanics engineering, pass through in-situ test and laboratory test
Completion is a kind of common method to the mechanical property research of rock sample (soil sample).Especially laboratory test, it is easy to operate, it is as a result smart
Really, regularized operation, the operating procedure and experimental condition of the compressive strength test of rock are more mature, but are lacked there is also following
Point：1, the acquisition of rock sample is easy to happen disturbance under low temperature；2, it is directed to the lower area of temperature, it is particularly tight to the disturbance of sample
Weight, temperature are affected to sample, are affected to the mechanical property of sample after Frozen-thawed cycled；3, sample generally all exists
(20 DEG C or so) progress of room temperature carry out mechanical property analysis for the rock sample being chronically under low-temperature condition in this way and cause error,
It is not enough to the true anti-compression property of reflection rock mass.It is now directed to the accurate detection of rock sample mechanical property under low-temperature condition, is needed light
Just simply mobile low temperature unconfined compression apparatus measures rock sample anti-compression property.
Invention content：
The purpose of the present invention seeks to design a kind of strain controlling formula low temperature without side to overcome disadvantage of the existing technology
Limit compressometer ensures that the basis of its mechanical test specimen size carries out meeting the nothing at a temperature of local environment for shallow rock soil
Confined compression strength test.
In order to achieve the purpose that foregoing invention, solves insufficient and limitation, the present invention present in existing assay method and relate to
And strain controlling formula low temperature unconfined compression apparatus agent structure include loading frame, vertical dynamometer, upload pressing plate, rock sample, electricity
Start wheel, vertical displacement meter, handle, lifter plate, thermal insulation case, Wen Xianping, temperature control button, movable pulley, temperature control fuselage, connecting rod,
Lower pressure transmission plate and fixed link；The bottom of the temperature control fuselage of case structure is provided with movable pulley；Temperature control fuselage is fixedly arranged at the upper side
There are the thermal insulation case of barrel-like structure, thermal insulation case to adjust temperature by temperature control fuselage；The side of temperature control fuselage is provided with temperature control button, with
Just different temperatures is selected, the Wen Xianping of display real time temperature is provided on the upside of temperature control button；Be provided on thermal insulation case handle with
Just either on or off thermal insulation case；It is fixedly installed loading frame in thermal insulation case, vertical dynamometer, upper pressure transmission are connected at the top of loading frame
Plate is connect by connecting rod with vertical dynamometer lower end；The bottom of thermal insulation case is provided with lifter plate, and lifter plate passes through temperature control fuselage
The handwheel control of upper setting moves up and down；It is provided with lower pressure transmission plate on lifter plate, uploads and is placed among pressing plate and lower pressure transmission plate
Rock sample；Vertical displacement meter is fixedly connected with the connecting rod by fixed link；Electric hand wheel drives lifter plate to move upwards compression rock sample
It is broken to rock sample, the compressive resistance of vertical displacement meter and vertical dynamometer measurement rock sample.
The agent structure of temperature control fuselage of the present invention includes heat sink, low pressure pipeline, pump, pressure piping；Pass through pump
Fuselage interior hot gas is recycled to pressure piping through low pressure pipeline, and heat is discharged through heat sink, to achieve the purpose that cooling.
The test procedure of strain controlling formula low temperature unconfined compression apparatus of the present invention is as follows：
Step 1：Rock sample is placed；Rock sample is blocked by required size and mechanical test requirement, is placed and uploads pressing plate
Among lower pressure transmission plate, lower pressure transmission plate is fixed on lifter plate；
Step 2：Temperature is set；Required temperature inside thermal insulation case is controlled by temperature control button, passes through the aobvious of Wen Xianping
Show to adjust temperature
Step 3：Low-temperature test；After temperature display on Wen Xianping is stablized, the compressive strength test of sample is proceeded by,
Power on, the climbing speed that lifter plate displacement is controlled by electronic handwheel carries out compressive strength test.
Step 4：Unload sample；After rock sample damages by pressure, the lifter plate of unconfined compression apparatus is restored to the original state, and close temperature control fuselage
Power supply wait for that the temperature inside the box returns to room temperature, and sample is unloaded.
Instrument and technical method provided by the invention have following remarkable result compared with existing known technology：
(1) a kind of strain controlling formula low temperature unconfined compression apparatus, increases mobile pulley, alleviates artificial carrying pressure,
What can relatively be stablized on horizontal fixed station move horizontally.
(2) a kind of strain controlling formula low temperature unconfined compression apparatus, it is integral with the compressometer build-in of no lateral spacing, enhance instrument
The globality of device.
(3) a kind of strain controlling formula low temperature unconfined compression apparatus, different from traditional determining instrument, the invention can be shown
The residing temperature of sample, can its better temperature environment.
Description of the drawings：
In order to illustrate the technical solution of the embodiments of the present invention more clearly, required use in being described below to embodiment
Attached drawing be briefly described.
Fig. 1 is the principle schematic diagram of the present invention.
Fig. 2 is the agent structure principle schematic of temperature control fuselage.
Fig. 3 is the principle schematic diagram of vertical dynamometer.
Specific implementation mode：
With reference to the attached drawing in the embodiment of the present invention, technical solution in the embodiment of the present invention carries out clear, complete
Ground describes, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on this
The embodiment of invention, every other implementation obtained by those of ordinary skill in the art without making creative efforts
Example, belongs to protection scope of the present invention.
The embodiment of the present invention is described in further detail below in conjunction with attached drawing.
Embodiment 1：
The agent structure for the strain controlling formula low temperature unconfined compression apparatus that the present embodiment is related to includes loading frame 1, vertical survey
Power meter 2 uploads pressing plate 3, rock sample 4, electronic handwheel 5, vertical displacement meter 6, handle 7, lifter plate 8, thermal insulation case 9, Wen Xianping 10, temperature
Control button 11, movable pulley 12, temperature control fuselage 13, connecting rod 14, lower pressure transmission plate 15 and fixed link 16；The temperature control fuselage of case structure
13 bottom is provided with movable pulley 12；The thermal insulation case 9 for being fixedly arranged at the upper side barrel-like structure of temperature control fuselage 13, thermal insulation case 9 are logical
It crosses temperature control fuselage 13 and adjusts temperature；The side of temperature control fuselage 13 is provided with temperature control button 11, to select different temperatures, temperature control to press
The upside of button 11 is provided with the Wen Xianping 10 of display real time temperature；Handle 7 is provided on thermal insulation case 9 so as to either on or off thermal insulation case
9；Loading frame 1 is fixedly installed in thermal insulation case 9, the top of loading frame 1 is connected with vertical dynamometer 2, uploads pressing plate 3 and passes through connection
Bar 14 is connect with 2 lower end of vertical dynamometer；The bottom of thermal insulation case 9 is provided with lifter plate 8, and lifter plate 8 passes through on temperature control fuselage 13
The control of handwheel 5 of setting moves up and down；It is provided with lower pressure transmission plate 15 on lifter plate 8, uploads and is put among pressing plate 3 and lower pressure transmission plate 15
It is equipped with rock sample 4；Vertical displacement meter 6 is fixedly connected by fixed link 16 with connecting rod 14；Electronic handwheel 5 drives lifter plate 8 upward
Movement compresses rock sample 4 to rock sample and is crushed, the compressive resistance of vertical displacement meter 6 and the measurement rock sample 4 of vertical dynamometer 2.
The agent structure for the temperature control fuselage 13 that the present embodiment is related to includes heat sink 131, low pressure pipeline 132, pump 133, height
Pressure pipeline 134；Fuselage interior hot gas is recycled to pressure piping 134 through low pressure pipeline 132 by pump 133, and through heat sink 131
Heat is discharged, to achieve the purpose that cooling.
The agent structure for the vertical dynamometer 2 that the present embodiment is related to includes pressure rings 201 and pressure gauge 202.
The test procedure for the strain controlling formula low temperature unconfined compression apparatus that the present embodiment is related to is as follows：
Step 1：Rock sample is placed；Rock sample 4 is blocked by required size and mechanical test requirement, is placed pressure transmission
Among plate 3 and lower pressure transmission plate 15, lower pressure transmission plate 18 is fixed on lifter plate 8；
Step 2：Temperature is set；The 9 required temperature in inside of thermal insulation case is controlled by temperature control button 11, passes through Wen Xianping
10 display adjusts temperature
Step 3：Low-temperature test；After temperature display on Wen Xianping 10 is stablized, the compression strength examination of sample is proceeded by
It tests, powers on, the climbing speed that 8 displacement of lifter plate is controlled by electronic handwheel 5 carries out compressive strength test.
Step 4：Unload sample；After rock sample damages by pressure, the lifter plate 8 of unconfined compression apparatus is restored to the original state, and close temperature control fuselage
13 power supply waits for that the temperature inside the box returns to room temperature, and sample is unloaded.
The strain controlling formula low temperature unconfined compression apparatus that the present embodiment is related to can accurately measure the ground in severe cold area
The compression strength characteristic of (soil body)；In real time detection at low temperature the anti-pressure ability of sample and temperature to ground (soil body) intensity
The influence of characteristic.
Embodiment 2：
As shown in Figure 1 to Figure 3, a kind of strain controlling formula low temperature unconfined compression apparatus, it is characterised in that：The low temperature system
Ice chest is flowed equipped with air in thermal insulative board (9) partition unconfined compression apparatus with outside air, and low-temperature refrigeration box has single open-door, by opening
It opens handle (7) and controls its switch.Vertical dynamometer (2) is by measuring one's own ability ring and vertical displacement meter forms, by the displacement of vertical displacement meter
Amount calculates vertical load.Vertical displacement meter (6) is fixed on the fixed beam uploaded above pressing plate (3).Lower end and lifter plate (8)
Contact.Strain controlling formula is controlled by electronic handwheel, controls its elevation rate.Refrigerating machine case (13) has temperature display (10), shows
Show the temperature in low-temperature refrigeration box.Refrigerating machine case (13) is furnished with temperature control burtons (11), and different stalls control different low temperature
Environment.Fuselage (13) lower end freeze equipped with removable movable pulley (12).
Claims (3)
1. a kind of strain controlling formula low temperature unconfined compression apparatus, it is characterised in that its agent structure includes loading frame, vertical dynamometry
Meter uploads pressing plate, rock sample, electronic handwheel, vertical displacement meter, handle, lifter plate, thermal insulation case, Wen Xianping, temperature control button, movement
Wheel, temperature control fuselage, connecting rod, lower pressure transmission plate and fixed link；The bottom of the temperature control fuselage of case structure is provided with movable pulley；Temperature control
The thermal insulation case for being fixedly arranged at the upper side barrel-like structure of fuselage, thermal insulation case adjust temperature by temperature control fuselage；The one of temperature control fuselage
Side is provided with temperature control button, and to select different temperatures, the Wen Xianping of display real time temperature is provided on the upside of temperature control button；Every
Handle is provided on incubator so as to either on or off thermal insulation case；Loading frame, the top connection of loading frame are fixedly installed in thermal insulation case
There is vertical dynamometer, uploads pressing plate and connect with vertical dynamometer lower end by connecting rod；The bottom of thermal insulation case is provided with lifter plate,
Lifter plate is controlled by the handwheel being arranged with temperature controlling machine and is moved up and down；Be provided with lower pressure transmission plate on lifter plate, upload pressing plate and
It is placed with rock sample among lower pressure transmission plate；Vertical displacement meter is fixedly connected with the connecting rod by fixed link；Electric hand wheel drives lifting
Plate moves upwards compression rock sample to rock sample and is crushed, the compressive resistance of vertical displacement meter and vertical dynamometer measurement rock sample.
2. strain controlling formula low temperature unconfined compression apparatus according to claim 1, it is characterised in that the temperature control fuselage
Agent structure include heat sink, low pressure pipeline, pump, pressure piping；Fuselage interior hot gas is recycled through low pressure pipeline by pumping
Heat is discharged to pressure piping, and through heat sink, to achieve the purpose that cooling.
3. strain controlling formula low temperature unconfined compression apparatus according to claim 1, it is characterised in that carried out using the instrument
The step of experiment, is as follows：
Step 1：Rock sample is placed；Rock sample is blocked by required size and mechanical test requirement, is placed and uploads pressing plate under
Among pressure transmission plate, lower pressure transmission plate is fixed on lifter plate；
Step 2：Temperature is set；Control required temperature inside thermal insulation case by temperature control button, by the display of Wen Xianping come
Adjust temperature
Step 3：Low-temperature test；After temperature display on Wen Xianping is stablized, the compressive strength test of sample is proceeded by, is connected
Power supply, the climbing speed that lifter plate displacement is controlled by electronic handwheel carry out compressive strength test.
Step 4：Unload sample；After rock sample damages by pressure, the lifter plate of unconfined compression apparatus is restored to the original state, and close the electricity of temperature control fuselage
Source waits for that the temperature inside the box returns to room temperature, and sample is unloaded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295726.0A CN108489823A (en) | 2018-03-30 | 2018-03-30 | A kind of strain controlling formula low temperature unconfined compression apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810295726.0A CN108489823A (en) | 2018-03-30 | 2018-03-30 | A kind of strain controlling formula low temperature unconfined compression apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108489823A true CN108489823A (en) | 2018-09-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810295726.0A Pending CN108489823A (en) | 2018-03-30 | 2018-03-30 | A kind of strain controlling formula low temperature unconfined compression apparatus |
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| CN (1) | CN108489823A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082211A (en) * | 2019-05-22 | 2019-08-02 | 江苏科技大学 | A kind of speed-limited liquidation soil intensity device for fast detecting and detection method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082211A (en) * | 2019-05-22 | 2019-08-02 | 江苏科技大学 | A kind of speed-limited liquidation soil intensity device for fast detecting and detection method |
| CN110082211B (en) * | 2019-05-22 | 2024-01-19 | 江苏科技大学 | Speed-limiting type quick detection device and detection method for strength of fluidized soil |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180904 |
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