CN110319760A - Calibration device and calibration method for rock deformation extensometer - Google Patents
Calibration device and calibration method for rock deformation extensometer Download PDFInfo
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- CN110319760A CN110319760A CN201810277394.3A CN201810277394A CN110319760A CN 110319760 A CN110319760 A CN 110319760A CN 201810277394 A CN201810277394 A CN 201810277394A CN 110319760 A CN110319760 A CN 110319760A
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- extensometer
- micrometer
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- push rod
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- 239000011435 rock Substances 0.000 title claims abstract description 93
- 238000000034 method Methods 0.000 title claims abstract description 15
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 27
- 238000005259 measurement Methods 0.000 claims description 25
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 230000008901 benefit Effects 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 238000013461 design Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/16—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge
- G01B7/18—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring the deformation in a solid, e.g. by resistance strain gauge using change in resistance
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a calibration device and a calibration method for a rock deformation extensometer. Wherein calibration device includes: a base; the fixed upright post is fixed on the base and is vertical to the base; the fixed table is parallel to the base and is connected with the fixed upright post in a manner of moving along the length direction of the fixed upright post and rotating around the fixed upright post; the micrometer is arranged on the fixed table, and the lower end of a push rod of the micrometer is positioned below the fixed table; the extensometer connecting structure is arranged at the lower end of a push rod of the micrometer; the clamp fixing seat is arranged on the base and can move in a direction close to or far away from the fixing upright post; the extensometer clamp is fixed on the clamp fixing seat; and the measuring part of the extensometer to be calibrated is connected with the push rod through the extensometer connecting structure and the extensometer clamp. The calibration device is simple in structure, easy and convenient to operate and high in accuracy, and different extensometers can be replaced by different extensometer clamps to calibrate different types of rock deformation extensometers, so that the application range is wide.
Description
Technical field
The present invention relates to rock-soil material mechanical property detection technique field, in particular to a kind of rock deformation extensometer calibration
Device and scaling method.
Background technique
In rock-soil material mechanical property test experience, axial deformation, radial deformation, piston displacement of rock etc. are important
Detection parameters.Usually the parameters such as the axial deformation of rock, radial deformation, piston displacement are carried out by rock deformation extensometer
Detection.Specifically, rock deformation extensometer have measurement portion, by obtain rock extensometer measurement portion deflection come pair
The mechanical property of rock is detected.In rock deformation extensometer use process, rock may result in due to some
There is deviation in deformation extensometer testing result, to influence the accuracy of mechanical properties of rock test.Therefore, periodically rock is become
It is very necessary that shape extensometer, which carries out calibration,.
Summary of the invention
In order to solve the above technical problems, the embodiment of the present invention provides a kind of rock deformation extensometer caliberating device and mark
Determine method.
Specifically, including technical solution below:
In a first aspect, the embodiment of the present invention provides a kind of rock deformation extensometer caliberating device, which includes:
Pedestal；
Vertical columns, fixation are on the base and vertical with the pedestal；
Fixed station, it is parallel with the pedestal, and can be moved along the vertical columns length direction and can be around the fixation
The mode of column rotation is connect with the vertical columns；
Micrometer is mounted on the fixed station, and the lower end of the push rod of the micrometer is located at the fixed station
Lower section；
The lower end of the push rod of the micrometer is arranged in extensometer connection structure；
Fixture fixing seat is arranged on the base and can move along the direction close to or far from the vertical columns
It is dynamic；
And
Extensometer fixture is fixed in the fixture fixing seat；
By the extensometer connection structure and the extensometer fixture by the measurement portion of the extensometer to be calibrated and institute
State push rod connection.
In a possible design, the rock deformation extensometer caliberating device further include: the first fastening screw and
Two fastening screws；
Be provided on the fixed station vertical columns mounting hole, micrometer mounting hole, the first fastening screw mounting hole and
Second fastening screw mounting hole；
The vertical columns mounting hole and the first fastening screw mounting hole are vertical and are mutually communicated, the micrometer peace
Dress hole is vertical with the second fastening screw mounting hole and is mutually communicated；
First fastening screw may pass through the first fastening screw mounting hole and offset with the vertical columns, the second fastening
Screw may pass through the second fastening screw mounting hole and offset with the micrometer.
In another possible design, sliding slot is provided on the pedestal, a part of the fixture fixing seat can be embedding
Enter in the sliding slot, and can be slided along the sliding slot.
In another possible design, the cross sectional shape of the sliding slot is in inverted T-shaped, the section shape of the fixture fixing seat
Shape is in the shape of an " I ".
It is circumferentially arranged in the fixture fixing seat to have 4 levelling bolts in another possible design.
In another possible design, to be calibrated extend is calculated as linear variable difference transformer LVDT, described to draw
Stretching meter fixture includes: the first mounting base and third fastening screw；
First mounting base is in U-shape, and the both ends of first mounting base are fixed in the fixture fixing seat, and described
Vertical LVDT measuring head mounting hole and horizontal third fastening screw mounting hole are provided in the middle part of one mounting base；The LVDT
Measuring head mounting hole and the third fastening screw mounting hole are mutually communicated；
The aperture of the LVDT measuring head mounting hole is adapted with the diameter of the LVDT measuring head, and the third fastens spiral shell
Nail may pass through the third fastening screw mounting hole and offset with the LVDT measuring head；
The extensometer connection structure include be arranged in the push rod bottom of the micrometer threaded hole and with the spiral shell
The connection wire rod of pit connection.
In another possible design, to be calibrated extend is calculated as stay-supported grating displacement meter, the extensometer folder
Tool includes the second mounting base；Card slot is provided in second mounting base, the main body of the stay-supported grating displacement meter may be stuck in
In the card slot；
The extensometer connection structure includes the bracing wire connection buckle that the lower end of push rod of the micrometer is arranged in.
In another possible design, to be calibrated extend is calculated as resistance-type rock axial deformation extensometer, described
Extensometer fixture includes: the installation column and support post being vertically fixed in the fixture fixing seat；
The support post is used to support the main body of the resistance-type rock axial deformation extensometer,
The lower end of the push rod of the upper end and micrometer of the installation column is respectively arranged with installation seam, the installation seam
For installing the blade of the resistance-type rock axial deformation extensometer.
In another possible design, to be calibrated extend is calculated as resistance-type rock transversely deforming extensometer, described
Extensometer fixture includes: the installation column and support post being vertically fixed in the fixture fixing seat；
The support post is used to support the main body of the resistance-type rock axial deformation extensometer,
The bottom of the push rod at the top and micrometer of the installation column is respectively arranged with threaded hole, the threaded hole
Connecting rod is inside installed；
The connecting rod is used to install the blade of the resistance-type rock transversely deforming extensometer.
Second aspect, extends meter calibration method the embodiment of the invention provides a kind of rock deformation, and the rock deformation draws
Stretching meter calibration method, rock deformation extensometer caliberating device described in first aspect is implemented through the embodiment of the present invention, including following
Step:
By the extensometer connection structure and the extensometer fixture by the measurement portion of the extensometer to be calibrated and institute
State the push rod connection of micrometer；
Keep the push rod of the micrometer vertically moving；
Shown by shift value and the extensometer to be calibrated by comparing the push rod shown by the micrometer
The deflection of the extensometer measurement portion to be calibrated, demarcates the extensometer to be calibrated.
Technical solution provided in an embodiment of the present invention the utility model has the advantages that
Rock deformation extensometer caliberating device provided in an embodiment of the present invention when in use, passes through extensometer fixture and setting
Extensometer connection structure in the push rod lower end of micrometer connects the push rod of the measurement portion of extensometer to be calibrated and micrometer, makes
When the push rod of proper micrometer is vertically moving, under the drive of push rod, the measurement portion of extensometer to be calibrated can produce therewith
Raw deflection.By the way that the reading of the reading of extensometer to be calibrated and micrometer is compared, can to extensometer to be calibrated into
Rower is fixed.
Rock deformation extensometer caliberating device structure provided in an embodiment of the present invention is simple, easy to operate, and accuracy is high.And
And rock deformation extensometer caliberating device provided in an embodiment of the present invention can be by replacing different extensometer fixtures come to difference
The rock deformation extensometer of type is demarcated, and the scope of application is wider.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described.
Fig. 1 is the structural schematic diagram of rock deformation extensometer caliberating device provided in an embodiment of the present invention；
Fig. 2 shows for the structure of extensometer fixture a kind of in rock deformation extensometer caliberating device provided in an embodiment of the present invention
It is intended to；
Fig. 3 is the structure of another extensometer fixture in rock deformation extensometer caliberating device provided in an embodiment of the present invention
Schematic diagram；
Fig. 4 is the structure of another extensometer fixture in rock deformation extensometer caliberating device provided in an embodiment of the present invention
Schematic diagram；
Fig. 5 is the structure of another extensometer fixture in rock deformation extensometer caliberating device provided in an embodiment of the present invention
Schematic diagram.
Appended drawing reference in figure respectively indicates:
1- pedestal；
2- vertical columns；
3- fixed station；
4- micrometer；
41- push rod；
5- fixture fixing seat；
The first mounting base of 61-；
611-LVDT measuring head mounting hole；
The second mounting base of 62-；
63- installs column；
64- support post；
71- connection wire rod；
72- bracing wire connection buckle；
73- installation seam；
74- connecting rod；
Y1-LVDT measuring head；
The data acquisition line of Y2-LVDT measuring head；
The main body of Y3- stay-supported grating displacement meter；
Y4- bracing wire；
The main body of Y5- resistance-type rock axial (transverse direction) deformation extensometer；
The blade of Y6- resistance-type rock axial (transverse direction) deformation extensometer.
Specific embodiment
To keep technical solution of the present invention and advantage clearer, below in conjunction with attached drawing to embodiment of the present invention make into
One step it is described in detail.Unless otherwise defined, all technical terms used in the embodiment of the present invention all have and art technology
The normally understood identical meaning of personnel.
In a first aspect, referring to Fig. 1, and being combined the embodiment of the invention provides a kind of rock deformation extensometer caliberating device
Fig. 2, Fig. 3, Fig. 4 and Fig. 5, the rock deformation extensometer caliberating device include:
Pedestal 1；
Vertical columns 2 are fixed on pedestal 1 and vertical with pedestal 1；
Fixed station 3, it is parallel with pedestal 1, and can move and can be rotated around vertical columns 2 along 2 length direction of vertical columns
Mode connect with vertical columns 2；
Micrometer 4 is mounted on fixed station 3, and the lower end of the push rod 41 of micrometer 4 is located at 3 lower section of fixed station；
The lower end of the push rod 41 of micrometer 4 is arranged in extensometer connection structure；
Fixture fixing seat 5 is arranged on pedestal 1 and can move along the direction close to or far from vertical columns 2；
And
Extensometer fixture is fixed in fixture fixing seat 5.
Wherein, the measurement portion of extensometer to be calibrated and push rod 41 are connected by extensometer connection structure and extensometer fixture
It connects.
When in use, by extensometer fixture and pushing away for micrometer 4 is arranged in caliberating device provided in an embodiment of the present invention
The extensometer connection structure of 41 lower end of bar connects the push rod of the measurement portion of extensometer to be calibrated and micrometer, so that working as micrometer
When 4 push rod 41 is vertically moving, under the drive of push rod 41, the measurement portion of extensometer to be calibrated can be deformed therewith
Amount.By comparing the reading of the reading of extensometer to be calibrated and micrometer 4, extensometer to be calibrated can be marked
It is fixed.
Rock deformation extensometer caliberating device structure provided in an embodiment of the present invention is simple, easy to operate, and accuracy is high.And
And rock deformation extensometer caliberating device provided in an embodiment of the present invention can be by replacing different extensometer fixtures come to difference
The rock deformation extensometer of type is demarcated, and the scope of application is wider.
In the embodiment of the present invention, can by adjusting the position (rotation fixed station 3) of 3 horizontal direction of fixed station, fixed station 3
Height and the distance between fixture fixing seat 5 and vertical columns 2, make the measurement portion centering of micrometer 4 Yu extensometer to be determined,
Guarantee the accuracy of calibration.The measurement accuracy of micrometer can be at 0.1 μm or more.
In the embodiment of the present invention, micrometer preferably has digital display function, and the micrometer that can be reset at an arbitrary position, thus
It can be reset simultaneously with extensometer to be calibrated and start to demarcate, improve the accuracy of calibration.
Further, in caliberating device provided in an embodiment of the present invention, vertical columns 2 can be welded on pedestal 1.
As shown in Figure 1, following manner connection can be used between vertical columns 2, fixed station 3 and micrometer 4.
Rock deformation extensometer caliberating device further include: the first fastening screw X1 and the second fastening screw X2.On fixed station 3
It is provided with vertical columns mounting hole, micrometer mounting hole, the first fastening screw mounting hole and the second fastening screw mounting hole.Gu
Determine column mounting holes and the first fastening screw mounting hole vertically and be mutually communicated, micrometer mounting hole and the second fastening screw are installed
Hole is vertical and is mutually communicated.
Vertical columns 2 pass through vertical columns mounting hole, and the first fastening screw X1 may pass through the first fastening screw mounting hole simultaneously
It offsets with vertical columns 2.It is understood that the first fastening screw mounting hole is threaded hole, by tightening the first fastening screw
X1 can make fixed station 3 and 2 fixation of vertical columns, by the height for unscrewing the adjustable fixed station 3 of the first fastening screw X1
It spends and rotates fixed station 3 to adjust the horizontal position of fixed station 3.
Similarly, the main part of micrometer 4 passes through micrometer mounting hole, and the second fastening screw X2 may pass through the second fastening
Screw mounting hole simultaneously offsets with micrometer.It is understood that the second fastening screw mounting hole is threaded hole, by tightening second
Fastening screw X2 can make the main body fixation of fixed station 3 Yu micrometer 4.
As shown in Figure 1, fixture fixing seat 5 can be connect with pedestal 1 in the following manner.
It is provided with sliding slot on pedestal 1, in a part of embeddable sliding slot of fixture fixing seat 5, and can slide along the chute.
In a kind of optional embodiment, the cross sectional shape of sliding slot is in inverted T-shaped, and the cross sectional shape of fixture fixing seat 5 is in
I-shaped, i.e. fixture fixing seat 5 include the vertical portion of two horizontal components of two horizontal components being oppositely arranged and connection,
Wherein, in the vertical portion of fixture fixing seat 5 and underlying horizontal component insertion sliding slot.
In the embodiment of the present invention, sliding slot can inwardly be opened up from the end face of pedestal 1, and fixture fixing seat 5 and extensometer
Fixture is arranged to an entirety, in this way, pass through the disassembly and installation of fixture fixing seat 5, it can be according to the difference of extensometer type
Replace extensometer fixture.
Further, as shown in Figure 1, circumferentially arranged in fixture fixing seat 5 have 4 levelling bolt X3.It is fixed with fixture
For rectangular (square or rectangle) is in the upper surface of seat 5, the position at four angles is arranged in 4 levelling bolts.It is specific next
It says, levelling bolt mounting hole (threaded hole) is set in fixture fixing seat 5, levelling bolt X3 is penetrated into levelling bolt mounting hole
In, and the lower end of levelling bolt X3 is made to offset with pedestal 1, fixture is fixed by upwardly or downwardly turning levelling bolt X3
Seat 5 is in a horizontal position.Horizontal instruction device (such as spirit bubble) can be set in fixture fixing seat 5 to indicate that fixture is fixed
Whether seat 5 is in a horizontal position.
It is understood that caliberating device provided in an embodiment of the present invention further includes computer or other divide with data
The equipment of analysis processing display function, for showing the measurement result of rock deformation extensometer, convenient for being carried out with the reading of micrometer 4
Comparison.
Further, in this field, the main linear variable differential transformer (Linear of common rock deformation extensometer
Variable Differential Transformer, LVDT, a kind of linear displacement transducer), stay-supported grating displacement meter,
Resistance-type rock axial deformation extensometer and resistance-type rock transversely deforming extensometer, the structure of every kind of rock deformation extensometer is not
Together, working principle is different.In the embodiment of the present invention, extensometer fixture has been separately designed for every kind of rock deformation extensometer.Under
Structure in face of every kind of extensometer fixture elaborates.
(1) it is suitable for the extensometer fixture of LVDT.
Measuring head is the critical component of LVDT.As shown in Fig. 2, the shape of LVDT measuring head Y1 is cylindrical, LVDT measurement
Data acquisition line Y2 is also connected on head.LVDT measuring head is internally provided with coil and iron core.When in use, when iron core is transported
When dynamic, coil just has voltage output, the displacement of iron core is determined by voltage value, so that it is determined that the deflection of rock.
The characteristics of based on LVDT, as shown in Fig. 2, the extensometer fixture for LVDT includes: the first mounting base 61 and third
Fastening screw X4.
Wherein, the first mounting base 61 is in U-shape, and the both ends of the first mounting base 61 are fixed in fixture fixing seat 5, the first installation
The middle part of seat 61 is provided with vertical LVDT measuring head mounting hole 611 and horizontal third fastening screw mounting hole；LVDT measurement
Head mounting hole 611 and third fastening screw mounting hole are mutually communicated.
The aperture of LVDT measuring head mounting hole 611 is adapted with the diameter of LVDT measuring head Y1, and third fastening screw X4 can
It offsets across third fastening screw mounting hole and with LVDT measuring head Y1.
Correspondingly, the extensometer connection structure that 41 lower end of push rod of micrometer 4 is arranged in includes that pushing away for micrometer 4 is arranged in
The threaded hole of 41 bottom of bar and the connection wire rod 71 being connect with threaded hole.
When demarcating to LVDT, LVDT measuring head Y1 is put into the LVDT measuring head mounting hole of the first mounting base 61
It is interior, third fastening screw X4 is passed through into third fastening screw mounting hole and is offseted with LVDT measuring head, thus by LVDT measuring head
Y1 is mounted in extensometer fixture, and the data acquisition line of LVDT measuring head Y1 is pierced by from the bottom of LVDT measuring head mounting hole 611.
The top of the iron core of LVDT measuring head Y1 has internal thread hole, connect iron core with connection wire rod 71 by the internal thread hole, from
And the iron core of LVDT measuring head Y1 is connect with the push rod 41 of micrometer 4.At this point, iron core will also generate when push rod 41 is mobile
Corresponding displacement, to realize the calibration to LVDT.
It should be noted that when being demarcated, by adjusting the horizontal position of fixed station 3 and fixture fixing seat 5 with
The distance between vertical columns 2 are same to make iron core, connection wire rod 71 and this three of the push rod 41 of micrometer 4 of LVDT measuring head Y1
Axis.
(2) it is suitable for the extensometer fixture of stay-supported grating displacement meter
As shown in figure 3, stay-supported grating displacement meter includes the main body Y3 and bracing wire Y4 from main body Y3 inside extraction, bracing wire
Y4 is its measurement portion.The working principle of stay-supported grating displacement meter is: by measuring the length that bracing wire Y4 is drawn out come really
Positioning moves.
The characteristics of based on stay-supported grating displacement meter, as shown in figure 3, being used for the extensometer fixture of stay-supported grating displacement meter
It include: the second mounting base 62；Card slot is provided in second mounting base 62, the main body Y3 of stay-supported grating displacement meter may be stuck in card slot
It is interior.
In a kind of optional embodiment, card slot is U-lag.
Correspondingly, the extensometer connection structure that 41 lower end of push rod of micrometer 4 is arranged in includes that pushing away for micrometer 4 is arranged in
The bracing wire connection buckle 72 of the lower end of bar 41.
When being demarcated, the main body Y3 of stay-supported grating displacement meter is mounted in the card slot of the second mounting base 62, it will
Bracing wire Y4 is connect with bracing wire connection buckle 72.At this point, when push rod 41 is mobile, bracing wire Y4 will also generate corresponding displacement, thus real
Now to the calibration of stay-supported grating displacement meter.
It should be noted that when being demarcated, by adjusting the horizontal position of fixed station 3 and fixture fixing seat 5 with
The distance between vertical columns 2 come make stay-supported grating displacement meter bracing wire keep vertical state.
(3) it is suitable for the extensometer fixture of resistance-type rock axial deformation extensometer
As shown in figure 4, the measurement portion of resistance-type rock axial deformation extensometer is two blade Y6, and two blade Y6 water
Flat to be oppositely arranged, i.e., two blade Y6 are located in two horizontal planes.When in use, by measurement two blades between away from
From determining deflection.
The characteristics of based on resistance-type rock axial deformation extensometer, as shown in figure 4, drawing for the axial deformation of resistance-type rock
The extensometer fixture for stretching meter includes: the installation column 63 and support post 64 being vertically fixed in fixture fixing seat 5.
Wherein, support post 64 is used to support the main body Y5 of resistance-type rock axial deformation extensometer, installation column 63
The lower end of the push rod 41 of upper end and micrometer 4 is respectively arranged with installation seam 73, and installation seam 73 is axial for installing resistance-type rock
Deform the blade Y6 of extensometer.
When being demarcated, the main body Y5 of resistance-type rock axial deformation extensometer is fixed on support post 64, it will
Two blade Y6 are separately mounted in the installation seam 73 of installation column 63 and the installation seam 73 of push rod 41.When push rod 41 is mobile,
The distance between two blade Y6 change therewith, thus the calibration to resistance-type rock axial deformation extensometer.
It should be noted that when being demarcated, by adjusting the horizontal position of fixed station 3 and fixture fixing seat 5 with
The distance between vertical columns 2 are coaxial to make to install column 63 and push rod 41.
A plurality of installation seam 73 can be set along the vertical direction respectively on installation column 63 and on push rod 41, to meet difference
The demand of gauge length (i.e. initial distance between two blade Y6, such as 25mm, 50mm and 100mm).
(4) it is suitable for the extensometer fixture of resistance-type rock transversely deforming extensometer
As shown in figure 5, the measurement portion of resistance-type rock transversely deforming extensometer is also two blade Y6, draw with axial deformation
Stretch meter the difference is that, two blade Y6 are vertically arranged, and be located at the same perpendicular in.When in use, pass through measurement
The distance between two blades determine deflection.
The characteristics of based on resistance-type rock transversely deforming extensometer, as shown in figure 5, drawing for the transversely deforming of resistance-type rock
The extensometer fixture for stretching meter includes: the installation column 63 and support post 64 being vertically fixed in fixture fixing seat 5.
Wherein, support post 64 is used to support the main body of resistance-type rock axial deformation extensometer, installs the top of column 63
The bottom of the push rod 41 of portion and micrometer 4 is respectively arranged with threaded hole, and connecting rod 74 is equipped in threaded hole；Connecting rod 74 is used for
The blade Y6 of resistance-type rock transversely deforming extensometer is installed.
When being demarcated, the main body Y5 of resistance-type rock transversely deforming extensometer is fixed on support post 64, it will
Two blade Y6 are separately mounted in the connecting rod 74 of installation column 63 and in the connecting rod 74 of push rod 41.When push rod 41 is mobile
When, the distance between two blade Y6 change therewith, thus the calibration to resistance-type rock transversely deforming extensometer.
Similarly, it when being demarcated, by adjusting the horizontal position of fixed station 3 and fixture fixing seat 5 and fixes vertical
The distance between column 2 is coaxial to make to install column 63 and push rod 41.
In the embodiment of the present invention, the structures such as threaded hole, bracing wire connection buckle 72, installation seam 73 can be set simultaneously in push rod 41,
In order to connect different rock deformation extensometers.
To sum up, rock deformation extensometer caliberating device structure provided in an embodiment of the present invention is simple, easy to operate, accuracy
It is high.Also, rock deformation extensometer caliberating device provided in an embodiment of the present invention can by replace different extensometer fixture come
Different types of rock deformation extensometer is demarcated, the scope of application is wider.
Second aspect, extends meter calibration method the embodiment of the invention provides a kind of rock deformation, which passes through
Above-mentioned rock deformation extensometer caliberating device is implemented, specifically includes the following steps:
Step S1, by extensometer connection structure and extensometer fixture by the measurement portion of extensometer to be calibrated and micrometer 4
Push rod 41 connect.
Step S2 keeps the push rod 41 of micrometer 4 vertically moving.
Step S3, by comparing shown by the shift value of push rod 41 shown by micrometer 4 and extensometer to be calibrated to
The deflection for demarcating extensometer measurement portion, demarcates extensometer to be calibrated.
It is understood that further including that alignment jig fixing seat 5 is in horizontality, adjusting solid in above-mentioned scaling method
The horizontal position and alignment jig fixing seat 5 for determining platform 3 make the push rod 41 and extensometer of micrometer 4 at a distance from vertical columns 2
Fixture centering and etc..
Below by taking LVDT as an example, rock deformation extensometer caliberating device provided in an embodiment of the present invention and scaling method are made
It further illustrates.
As depicted in figs. 1 and 2, the caliberating device provided in an embodiment of the present invention suitable for LVDT, vertical columns 2 are vertical
It is fixed on pedestal 2, fixed station 3 is set on vertical columns 2 and passes through the first fastening screw X1 for fixed station 3 and vertical columns
2 is fixed.Micrometer 4 is fixed on fixed station 3 by the second fastening screw X2, and the push rod 41 of micrometer 4 is located at fixed station
Lower section.The sliding slot that cross sectional shape is inverted T-shaped is provided on pedestal 1, the cross sectional shape of fixture fixing seat 5 is I-shaped,
Fixture fixing seat 5 can be slided in the sliding slot of pedestal 1 along the direction close to or far from vertical columns 2.In fixture fixing seat 5
Four angles are respectively arranged with levelling bolt X3.
First mounting base 61 that is in U-shape is provided in fixture fixing seat 5, it is solid that the both ends of the first mounting base 61 are fixed on fixture
In reservation 5, the middle part of the first mounting base 61 is provided with vertical LVDT measuring head mounting hole 611, LVDT measuring head mounting hole 611
Aperture be adapted with the diameter of LVDT measuring head Y1, by third fastening screw X4 by LVDT measuring head Y1 and the first mounting base
61 is fixed, and the data acquisition line Y2 of LVDT measuring head is pierced by from the bottom of LVDT measuring head mounting hole 611.
Correspondingly, 41 bottom of push rod of micrometer 4 is provided with threaded hole, the upper end of connection wire rod 71 and the spiral shell of push rod 41
Pit connection, the lower end of connection wire rod 71 is connect with the threaded hole of the iron core of LVDT measuring head Y1, thus by LVDT measuring head Y1
Iron core connect with the push rod 41 of micrometer 4.
Using above-mentioned LVDT caliberating device to the LVDT method demarcated the following steps are included:
The extensometer fixture shown in Fig. 2 for being used for LVDT is installed in the sliding slot of pedestal 1, LVDT is measured by step S1
Head Y1 is mounted in the LVDT measuring head mounting hole of the first mounting base 61, by connection wire rod 71 by the iron core of LVDT measuring head Y1
It is connect with the push rod 41 of micrometer 4.
Step S2 makes fixture fixing seat 5 be in horizontality, adjusts the height of fixed station 3 by adjusting levelling bolt X3
And its horizontal position and the distance between fixture fixing seat 5 and vertical columns 2, keep iron core, connection wire rod 71 and push rod 41 same
Axis.
The data line Y2 of LVDT measuring head connect with computer, makes the reading of LVDT show value and micrometer by step S3
It resets simultaneously.
Step S4 pulls push rod 41 up and down, and band dynamic iron core moves, and records the reading of micrometer and the LVDT of Computer display
Deflection.
Step S5 calculates the measured deviation of LVDT according to the reading of the deflection of the LVDT of Computer display and micrometer,
According to Specifications, the calibration to LVDT is realized.
The above is merely for convenience of it will be understood by those skilled in the art that technical solution of the present invention, not to limit
The present invention.All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this
Within the protection scope of invention.
Claims (10)
1. a kind of rock deformation extensometer caliberating device characterized by comprising
Pedestal (1)；
Vertical columns (2) are fixed on the pedestal (1) and vertical with the pedestal (1)；
Fixed station (3), it is parallel with the pedestal (1), and with can along the vertical columns (2) length direction move and can be around described
The mode of vertical columns (2) rotation is connect with the vertical columns (2)；
Micrometer (4) is mounted on the fixed station (3), and the lower end of the push rod (41) of the micrometer (4) is located at the institute
It states below fixed station (3)；
Extensometer connection structure is arranged in the lower end of the push rod (41) of the micrometer (4)；
Fixture fixing seat (5), be arranged on the pedestal (1) and can along close to or far from the vertical columns (2) sides
To movement；
And
Extensometer fixture is fixed on the fixture fixing seat (5)；
The measurement portion of the extensometer to be calibrated is pushed away with described by the extensometer connection structure and the extensometer fixture
Bar (41) connection.
2. rock deformation extensometer caliberating device according to claim 1, which is characterized in that the rock deformation extensometer
Caliberating device further include: the first fastening screw (X1) and the second fastening screw (X2)；
Vertical columns mounting hole, micrometer mounting hole, the first fastening screw mounting hole and are provided on the fixed station (3)
Two fastening screw mounting holes；
The vertical columns mounting hole and the first fastening screw mounting hole are vertical and are mutually communicated, the micrometer mounting hole
It is vertical with the second fastening screw mounting hole and be mutually communicated；
First fastening screw (X1) may pass through the first fastening screw mounting hole and offset with the vertical columns (2), and second
Fastening screw (X2) may pass through the second fastening screw mounting hole and offset with the micrometer (4).
3. rock deformation extensometer caliberating device according to claim 1, which is characterized in that be arranged on the pedestal (1)
There is a sliding slot, in a part of embeddable sliding slot of the fixture fixing seat (5), and can be slided along the sliding slot.
4. rock deformation extensometer caliberating device according to claim 3, which is characterized in that the cross sectional shape of the sliding slot
In inverted T-shaped, the cross sectional shape of the fixture fixing seat (5) is in the shape of an " I ".
5. rock deformation extensometer caliberating device according to claim 1, which is characterized in that the fixture fixing seat (5)
It is above circumferentially arranged to have 4 levelling bolts (X3).
6. described in any item rock deformation extensometer caliberating devices according to claim 1~5, which is characterized in that
To be calibrated extend is calculated as linear variable difference transformer LVDT, and the extensometer fixture includes: the first mounting base
(61) and third fastening screw (X4)；
First mounting base (61) is in U-shape, and the both ends of first mounting base (61) are fixed on the fixture fixing seat (5)
On, the third fastening of vertical LVDT measuring head mounting hole (611) and level is provided in the middle part of first mounting base (61)
Screw mounting hole；The LVDT measuring head mounting hole (611) and the third fastening screw mounting hole are mutually communicated；
The aperture of the LVDT measuring head mounting hole (611) is adapted with the diameter of the LVDT measuring head, the third fastening
Screw (X4) may pass through the third fastening screw mounting hole and offset with the LVDT measuring head；
The extensometer connection structure include setting the micrometer (4) push rod (41) bottom threaded hole and with it is described
The connection wire rod (71) of threaded hole connection.
7. described in any item rock deformation extensometer caliberating devices according to claim 1~5, which is characterized in that
To be calibrated extend is calculated as stay-supported grating displacement meter, and the extensometer fixture includes the second mounting base (62)；It is described
Card slot is provided in second mounting base (62), the main body of the stay-supported grating displacement meter may be stuck in the card slot；
The extensometer connection structure includes bracing wire connection buckle of the setting in the lower end of the push rod (41) of the micrometer (4)
(72)。
8. described in any item rock deformation extensometer caliberating devices according to claim 1~5, which is characterized in that described wait mark
Surely it extends and is calculated as resistance-type rock axial deformation extensometer, the extensometer fixture includes: to be vertically fixed on the fixture to fix
Installation column (63) and support post (64) on seat (5)；
The support post (64) is used to support the main body of the resistance-type rock axial deformation extensometer,
The lower end of the push rod (41) of the upper end and micrometer (4) of installation column (63) is respectively arranged with installation seam
(73), the installation seam (73) is used to install the blade of the resistance-type rock axial deformation extensometer.
9. described in any item rock deformation extensometer caliberating devices according to claim 1~5, which is characterized in that
To be calibrated extend is calculated as resistance-type rock transversely deforming extensometer, and the extensometer fixture includes: to be vertically fixed on
Installation column (63) and support post (64) on the fixture fixing seat (5)；
The support post (64) is used to support the main body of the resistance-type rock axial deformation extensometer,
The bottom of the push rod (41) at the top and micrometer (4) of installation column (63) is respectively arranged with threaded hole, institute
It states and connecting rod (74) is installed in threaded hole；
The connecting rod (74) is used to install the blade of the resistance-type rock transversely deforming extensometer.
The meter calibration method 10. a kind of rock deformation is extended, which is characterized in that rock deformation meter calibration method of extending passes through power
Benefit requires 1~9 described in any item rock deformation extensometer caliberating devices to implement, comprising the following steps:
By the extensometer connection structure and the extensometer fixture by the measurement portion of the extensometer to be calibrated and described thousand
Divide push rod (41) connection of ruler (4)；
Keep the push rod (41) of the micrometer (4) vertically moving；
Shown by shift value and the extensometer to be calibrated by comparing the push rod (41) shown by the micrometer (4)
The extensometer measurement portion to be calibrated deflection, the extensometer to be calibrated is demarcated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277394.3A CN110319760A (en) | 2018-03-30 | 2018-03-30 | Calibration device and calibration method for rock deformation extensometer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810277394.3A CN110319760A (en) | 2018-03-30 | 2018-03-30 | Calibration device and calibration method for rock deformation extensometer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110319760A true CN110319760A (en) | 2019-10-11 |
Family
ID=68111851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810277394.3A Pending CN110319760A (en) | 2018-03-30 | 2018-03-30 | Calibration device and calibration method for rock deformation extensometer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110319760A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442971A (en) * | 2020-05-09 | 2020-07-24 | 华侨大学 | Positioning device and positioning method for axial deformation extensometer |
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Application publication date: 20191011 |