CN206160990U - Measure device of rock sample hoop strain - Google Patents
Measure device of rock sample hoop strain Download PDFInfo
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- CN206160990U CN206160990U CN201621246991.2U CN201621246991U CN206160990U CN 206160990 U CN206160990 U CN 206160990U CN 201621246991 U CN201621246991 U CN 201621246991U CN 206160990 U CN206160990 U CN 206160990U
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- fixed seat
- rock sample
- fixing base
- bearing plate
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Abstract
The utility model relates to a measure device of rock sample hoop strain, including first fixing base and second fixing base, first fixing base and second fixing base set up respectively in the cylindric rock sample upper portion surface both sides of awaiting measuring, one side bottom that first fixing base is close to the second fixing base is equipped with curved force bearing plate, and the second fixing base is installed on force bearing plate, connects fixedly between first fixing base and the second fixing base through flexible connectors, first fixing base and second fixing base are through cramping the strap tightly in the rock sample periphery that awaits measuring, install linear displacement sensor on the first fixing base, be fixed with annular deformation displacement push rod on the second fixing base, the directional annular deformation displacement push rod of linear displacement sensor, its probe end and annular deformation displacement push rod tip butt, the external backstage of linear displacement sensor computer. The advantage: simple structure, simple to operate, measurement rock radial deformation that can be comprehensive, measuring result is comparatively accurate.
Description
Technical field
The utility model belongs to rock field of measuring technique, more particularly to a kind of dress of measurement rock sample hoop strain
Put.
Background technology
The basic mechanical property of rock is the basis of various rock engineerings, and the deformation performance of rock is that evaluation rock is basic
One of important parameter of mechanical property, therefore in the experiment of various rock samples, Jing often will be carried out to the deformation of rock sample
Measurement.At present the method for measurement rock deformation mainly has amesdial method, strain gauge method and most popular LVDT displacements at this stage
Sensor mensuration.Wherein, amesdial method is that amesdial one end is fixed on into fixed position, and the other end is contradicted and come in rock surface
The deformation of measurement rock.There is that certainty of measurement is low, measurement range is limited and cannot be used for the examination of normal triaxial experimental rock
The shortcomings of deformation measurement of sample.Strain gauge method is that resistance strain gage is attached to into specimen surface or certain relative position, by rock
The deformation of sample causes the change of resistance-strain sheet resistance to measure the deformation of rock sample.The method there is also various lacking
Point, deformation that such as can only be near measuring strain piece, it is impossible to measure rock sample bulk deformation feature.Additionally, foil gauge is also needed to
Foil gauge and its wire are fixed and sealed by fluid sealant, and generation oil leak situation is easy under normal triaxial experiment causes measurement knot
It is really inaccurate.LVDT sensor mensurations be due to LVDT sensors in shaft-like armature in diverse location so as to produce difference
Voltage, by measuring output voltage the deformation of rock sample is measured.LVDT sensors have many advantages, such as principle it is directly perceived,
Simple structure, reliable operation, long service life, sensitivity height, range of linearity width, reproducible, high resolution, it is sturdy and durable simultaneously
Can work in various adverse circumstances, thus can work in ordinary triaxial test instrument well and without consider pressure indoor
Impact of the middle hydraulic oil to measurement apparatus.At present LVDT sensors mensuration is mainly fixed on LVDT sensors on support,
The shaft-like armature of LVDT is contacted with rock sample.But this method is larger due to support fixation LVDT sensor requisite spaces, nothing
Method is applied in ordinary triaxial test to the deformation measurement of rock sample.Further, since LVDT sensors mensuration in the method
Also the shaft-like armature of LVDT sensors and the deformation at rock sample contact surface can only be measured, therefore cannot comprehensively measures rock sample
Deformation.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of device of measurement rock sample hoop strain, effectively
The defect for overcoming prior art.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of dress of measurement rock sample hoop strain
Put, including the first fixed seat and the second fixed seat；
Above-mentioned first fixed seat and the second fixed seat are separately positioned on cylindric rock sample top to be measured both sides, and mutually
It is arranged close to；
Above-mentioned first fixed seat bottom is set to the cambered surface matched with rock sample periphery to be measured, and it is fixed near second
One side bottom of seat is provided with the force bearing plate of the arc matched with rock sample periphery to be measured, and above-mentioned second fixed seat is arranged on above-mentioned
On force bearing plate, and its bottom is set to the cambered surface that matches with above-mentioned force bearing plate upper surface, and above-mentioned first fixed seat and second are fixed
It is connected by Flexible Connector between seat；
Above-mentioned first fixed seat and the second fixed seat are by boot band banding on rock sample periphery to be measured；
Linear displacement transducer is installed in above-mentioned first fixed seat, in above-mentioned second fixed seat cyclic deformation position is fixed with
Push rod is moved, above-mentioned linear displacement transducer points to cyclic deformation displacement push rod, and its end of probe is pushed away with above-mentioned cyclic deformation displacement
Boom end is abutted；
The external backstage computer of above-mentioned linear displacement transducer；
When rock sample to be measured occurs radial deformation, above-mentioned second fixed seat can be along force bearing plate relative to the first fixed seat
Move close to or away from and above-mentioned linear displacement transducer measures displacement information and feed back to backstage computer by end of probe.
The beneficial effects of the utility model are：Simple structure, it is easy for installation, rock radial deformation can be comprehensively measured,
Measurement result is more accurate.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, above-mentioned linear displacement transducer is LVDT displacement transducers.
Further, lower clamping piece is fixed with above-mentioned first fixed seat, above-mentioned lower clamping piece is provided with upper clip, above-mentioned straight line position
Displacement sensor is clamped between above-mentioned lower clamping piece and upper clip.
It is easy for clamping linear displacement transducer using the beneficial effect of above-mentioned further scheme.
Further, above-mentioned force bearing plate is provided with the slide rail of arc, and above-mentioned second fixed seat bottom is provided with and above-mentioned slide rail
The chute matched somebody with somebody, above-mentioned slide rail is stretched in above-mentioned chute, and when rock sample to be measured occurs radial deformation, above-mentioned second fixed seat can
Move close to relative to the first fixed seat on force bearing plate along slide rail or away from.
It is to reduce the second fixed seat relative movement occurs with the first fixed seat using the beneficial effect of above-mentioned further scheme
When frictional force between the second fixed seat and force bearing plate so that measurement result is more accurate.
Further, above-mentioned Flexible Connector is symmetricly set on above-mentioned first fixed seat and the second fixed seat both sides.
It is rationally distributed using the beneficial effect of above-mentioned further scheme, being easy to will by Flexible Connector and boot band
First fixed seat and the second fixed seat are tightly secured on rock sample to be measured.
Further, above-mentioned first fixed seat and the second fixed seat are respectively provided on two sides with extension corresponding with above-mentioned Flexible Connector
Component, above-mentioned Flexible Connector two ends are articulated in respectively in corresponding catch member.
It is easy for that Flexible Connector is installed using the beneficial effect of above-mentioned further scheme.
Further, above-mentioned Flexible Connector is spring.
It is that result is simple, easy to use using the beneficial effect of above-mentioned further scheme.
Further, above-mentioned boot band is steel band.
It is that its intensity is high using the beneficial effect of above-mentioned further scheme, is unlikely to deform.
Description of the drawings
Fig. 1 is the structural representation of the device of measurement rock sample hoop strain of the present utility model；
In accompanying drawing, the list of parts representated by each label is as follows：
1st, the first fixed seat, the 2, second fixed seat, 3, Flexible Connector, 4, boot band, 5, catch member, 11, force bearing plate,
21st, linear displacement transducer, 22, lower clamping piece, 23, upper clip, 31, cyclic deformation displacement push rod, 111, slide rail.
Specific embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
Embodiment：As shown in figure 1, the device of the measurement rock sample hoop strain of the present embodiment includes the first fixed seat 1
With the second fixed seat 2；
The fixed seat 2 of above-mentioned first fixed seat 1 and second is separately positioned on cylindric rock sample upper face both sides to be measured,
And setting close to each other；
The above-mentioned bottom of first fixed seat 1 is set to the cambered surface matched with rock sample periphery to be measured, and it is solid near second
One side bottom of reservation 2 is provided with the force bearing plate 11 of the arc matched with rock sample periphery to be measured, and above-mentioned second fixed seat 2 is installed
On above-mentioned force bearing plate 11, and its bottom is set to the cambered surface that matches with the upper surface of above-mentioned force bearing plate 11, above-mentioned first fixed seat 1
And second be connected between fixed seat 2 by Flexible Connector 3；
The fixed seat 2 of above-mentioned first fixed seat 1 and second is by the banding of boot band 4 on rock sample periphery to be measured；
Linear displacement transducer 21 is installed in above-mentioned first fixed seat 1, in above-mentioned second fixed seat 2 annular change is fixed with
Morpheme moves push rod 31, and above-mentioned linear displacement transducer 21 points to cyclic deformation displacement push rod 31, and its end of probe and above-mentioned annular
The end abutment of deformation displacement push rod 31；
The external backstage computer of above-mentioned linear displacement transducer 21；
When rock sample to be measured occurs radial deformation, above-mentioned second fixed seat 2 can be solid relative to first along force bearing plate 11
Reservation 1 is moved close to or away from and above-mentioned linear displacement transducer 21 measures displacement information and feed back to backstage by end of probe
Computer.
During use, under the influence of external force there is creep generation radial deformation, now, the first fixed seat in big plan rock sample
1 and second fixed seat 2 relative movement (relative draw close or away from) can occur, that is, be exactly the end of cyclic deformation displacement push rod 31 with it is straight
The information that displacement is measured by there is relative displacement, the end of probe of linear displacement transducer 21 between linear movement pick-up 21 is simultaneously anti-
Backstage computer is fed to, the radial-deformation of rock sample to be measured is obtained after information processing.
Above-mentioned linear displacement transducer 21 is LVDT displacement transducers, and its measurement structure is more accurate.
Preferably, lower clamping piece 22 is fixed with above-mentioned first fixed seat 1, above-mentioned lower clamping piece 22 is provided with upper clip 23, on
State linear displacement transducer 21 to be clamped between above-mentioned lower clamping piece 22 and upper clip 23, be easy to clamp linear displacement transducer 21,
Dismounting is more convenient, time saving and energy saving.
Above-mentioned force bearing plate 11 is provided with the slide rail 111 of arc, and the above-mentioned bottom of second fixed seat 2 is provided with and above-mentioned slide rail 111
The chute of matching, above-mentioned slide rail 111 is stretched in above-mentioned chute, when there is radial deformation in rock sample to be measured, the first fixed seat 1
And second there is relative movement between fixed seat 2, above-mentioned second fixed seat 2 can along slide rail 111 on force bearing plate 11 relative to
One fixed seat 1 is moved close to or away from the frictional force reduced between the second fixed seat 2 and force bearing plate 11 of high degree makes
Obtain measurement result more accurate.
Preferably, above-mentioned Flexible Connector 3 is symmetricly set on the above-mentioned both sides of first fixed seat, 1 and second fixed seat 2, its cloth
Office is rationally so that connect more stable between the first fixed seat 1 and the second fixed seat 2, stress is than more uniform.
Preferably, the fixed seat 2 of above-mentioned first fixed seat 1 and second is respectively provided on two sides with corresponding with above-mentioned Flexible Connector 3
Catch member 5, the two ends of above-mentioned Flexible Connector 3 are articulated in respectively in corresponding catch member 5, are easily installed Flexible Connector 3.
Above-mentioned Flexible Connector 3 is spring, and the connector that can also choose other can have identical function is attached solid
It is fixed.
Above-mentioned boot band 4 is steel band, and its intensity is higher, also can select other and there is high intensity and the object of toughness to be replaced
Change.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (8)
1. it is a kind of measurement rock sample hoop strain device, it is characterised in that：Including the first fixed seat (1) and the second fixed seat
(2)；
First fixed seat (1) and the second fixed seat (2) are separately positioned on cylindric rock sample upper face both sides to be measured,
And setting close to each other；
First fixed seat (1) bottom is set to the cambered surface matched with rock sample periphery to be measured, and it is fixed near second
One side bottom of seat (2) is provided with the force bearing plate (11) of the arc matched with rock sample periphery to be measured, second fixed seat (2)
On the force bearing plate (11), and its bottom is set to the cambered surface that matches with the force bearing plate (11) upper surface, and described
It is connected by Flexible Connector (3) between one fixed seat (1) and the second fixed seat (2)；
First fixed seat (1) and the second fixed seat (2) are by boot band (4) banding on rock sample periphery to be measured；
Linear displacement transducer (21) is installed on first fixed seat (1), on second fixed seat (2) annular is fixed with
Deformation displacement push rod (31), the linear displacement transducer (21) points to cyclic deformation displacement push rod (31), and its end of probe with
Cyclic deformation displacement push rod (31) end abutment；
The external backstage computer of the linear displacement transducer (21)；
When rock sample to be measured occurs radial deformation, second fixed seat (2) can be solid relative to first along force bearing plate (11)
Reservation (1) is moved close to or away from and the linear displacement transducer (21) measures displacement information and feed back to by end of probe
Backstage computer.
2. it is according to claim 1 it is a kind of measurement rock sample hoop strain device, it is characterised in that：The straight line position
Displacement sensor (21) is LVDT displacement transducers.
3. it is according to claim 2 it is a kind of measurement rock sample hoop strain device, it is characterised in that：Described first consolidates
Lower clamping piece (22) is fixed with reservation (1), the lower clamping piece (22) is provided with upper clip (23), the linear displacement transducer
(21) it is clamped between the lower clamping piece (22) and upper clip (23).
4. it is according to claim 2 it is a kind of measurement rock sample hoop strain device, it is characterised in that：The force bearing plate
(11) slide rail (111) of arc is provided with, the second fixed seat (2) bottom is provided with the chute matched with the slide rail (111),
The slide rail (111) is stretched in the chute, and when rock sample to be measured occurs radial deformation, second fixed seat (2) can
Move close to relative to the first fixed seat (1) on force bearing plate (11) along slide rail (111) or away from.
5. it is according to claim 4 it is a kind of measurement rock sample hoop strain device, it is characterised in that：The elasticity is even
Fitting (3) is symmetricly set on first fixed seat (1) and the second fixed seat (2) both sides.
6. it is according to claim 5 it is a kind of measurement rock sample hoop strain device, it is characterised in that：Described first consolidates
Reservation (1) and the second fixed seat (2) are respectively provided on two sides with catch member (5) corresponding with the Flexible Connector (3), the elasticity
Connector (3) two ends are articulated in respectively in corresponding catch member (5).
7. it is according to claim 6 it is a kind of measurement rock sample hoop strain device, it is characterised in that：The elasticity is even
Fitting (3) is spring.
8. the device of a kind of measurement rock sample hoop strain according to any one of claim 1 to 7, it is characterised in that：
The boot band (4) is steel band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621246991.2U CN206160990U (en) | 2016-11-18 | 2016-11-18 | Measure device of rock sample hoop strain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621246991.2U CN206160990U (en) | 2016-11-18 | 2016-11-18 | Measure device of rock sample hoop strain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206160990U true CN206160990U (en) | 2017-05-10 |
Family
ID=58660677
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621246991.2U Expired - Fee Related CN206160990U (en) | 2016-11-18 | 2016-11-18 | Measure device of rock sample hoop strain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206160990U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441210A (en) * | 2016-11-18 | 2017-02-22 | 中国科学院武汉岩土力学研究所 | Device for measuring circumferential strain of rock specimen |
| CN113203622A (en) * | 2021-04-26 | 2021-08-03 | 温州大学 | Real-time measuring system for detecting radial displacement of geotechnical triaxial sample |
-
2016
- 2016-11-18 CN CN201621246991.2U patent/CN206160990U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106441210A (en) * | 2016-11-18 | 2017-02-22 | 中国科学院武汉岩土力学研究所 | Device for measuring circumferential strain of rock specimen |
| CN113203622A (en) * | 2021-04-26 | 2021-08-03 | 温州大学 | Real-time measuring system for detecting radial displacement of geotechnical triaxial sample |
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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: 20170510 Termination date: 20211118 |
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| CF01 | Termination of patent right due to non-payment of annual fee |