CN106706427A - Experimental apparatus for testing tensile strength of rock and experimental method thereof - Google Patents
Experimental apparatus for testing tensile strength of rock and experimental method thereof Download PDFInfo
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- CN106706427A CN106706427A CN201611187586.2A CN201611187586A CN106706427A CN 106706427 A CN106706427 A CN 106706427A CN 201611187586 A CN201611187586 A CN 201611187586A CN 106706427 A CN106706427 A CN 106706427A
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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
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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
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Abstract
The invention discloses an experimental apparatus for testing the tensile strength of a rock. The apparatus comprises two guide plates, a guide rod and stretching assemblies, wherein a through hole is formed in each of the guide plates, and the guide rod penetrates through the through holes to be assembled with the guide plates in a sliding mode; and the stretching assembly is fixed to the outer side of each of the two guide plates. The invention also discloses an experimental method based on the experimental apparatus. The apparatus disclosed by the invention can firmly fix two ends of a test sample so as to prevent potential safety hazards as the test sample falls off in an experimental process. After an experiment, the test sample can be quickly and conveniently taken out, so that the experimental efficiency is improved. The stretching assemblies which stretch can clamp the test sample in a self-locking manner, and when the test sample needs to be taken out, the stretching assemblies can push the test sample out of a locking assembly, so that the apparatus is quite convenient and practical. When the test sample is taken out, a push-out experiment can be realized while an arc-shaped plate portion loosens the end portion of the test sample, so that the test sample is quite conveniently taken out.
Description
Technical field
The present invention relates to a kind of material properties of rock test device, more particularly to a kind of reality for testing Tensile Strength of Rock
Experiment device and lift sample lift component.The invention also discloses the experimental technique of above-mentioned experimental provision.
Background technology
In study of rocks mechanical property, the tensile strength of rock is one of research emphasis.Current study of rocks
Tensile strength mainly has two methods, and one kind is Brazilian disc split the law, and one kind is uniaxial direct tensile method.
Current study of rocks tensile strength mainly uses Brazilian disc split the law, pressure during by pressure break rock sample or
Pressure is come the tensile strength of the rock that converts.But it is very high that this method finds center line requirement accurately for sample, once do not find accurately
Larger error can be caused, and tension-strain curve cannot be obtained, the research for the later stage cannot provide perfect reference
Data.
The rocks in direct tension experimental provision being bonded in Patent No. CN2013105070218, entitled sleeve and experiment side
Experimental provision and its experiment of a kind of use uniaxial direct tensile method test Tensile Strength of Rock are disclosed in the Chinese invention patent of method
Method.It mainly uses viscose glue, split jacket casing, lock ring ring to fix the two ends of rock sample, and then sample is stretched, Zhi Daoyan
Stone is pulled off.This mode is although fairly simple, and is obtained in that tension-strain curve, but only with viscose glue, right
Holding jacket casing, lock ring ring can cause that fixation is not firm enough fixing sample two ends, and security is low, is bonded using viscose glue in addition real
It is very difficult when after testing sample can be caused to take out, greatly reduce conventional efficient and progress.
In addition, when sample takes out, not lifting or splendid attire instrument, this easily causes sample and drops, and there is larger peace
Full hidden danger.
Therefore it is applicant's understanding that be necessary to design a kind of experimental provision of use uniaxial direct tensile method tensile sample, it should
Than it is stronger, be securely fixed sample two ends, and can be easily removed sample after the completion of experiment.
The content of the invention
In view of the drawbacks described above of prior art, the technical problems to be solved by the invention are to provide a kind of test rock and resist
The experimental provision of tensile strength, its use uniaxial direct tensile method test rock sample tensile strength and can firmly, be securely fixed
Sample two ends.
To achieve the above object, the invention provides a kind of experimental provision for testing Tensile Strength of Rock, including guide plate,
Guide post, stretching assembly, described guide plate are provided with through hole, and guide post is slidably assembled through through hole with guide plate；
Described guide plate has two pieces, and every piece of guide plate outside is respectively and fixedly provided with stretching assembly；
Described stretching assembly, including, the component ring on load bar is fixed on, described component ring cuts with scissors with component pole one end
Connect, the described component pole other end is hinged with the slide cartridge junction on slide cartridge, described component pole at least two, and two
End is evenly distributed on component ring and slide cartridge end；
Described slide cartridge also includes top baffle ring, slipper, bottom baffle ring, and described slipper passes through guide plate, described
Top baffle ring and bottom baffle ring respectively be located at guide plate outside and inner side；
It is provided with slot to make way in described slipper, described top baffle ring is being connected logical with being provided with slot to make way correspondence position
Groove, described connection groove section is less than resigning slot cross-section；
The resigning end that is hinged of described slide cartridge articulated section is fitted into slot to make way, and slide cartridge articulated section passes with component pole hinged end
Connection groove；
Described switching ring inwall is made up of protrusion side plate bending and depression side plate bending, and is provided with switching in described switching ring endoporus
Block, described handoff block is assembled by switching connecting pin with the switching mounting hole in switching mounting seat, and described switching connection
Pin is additionally provided with torsion spring on part in being fitted into switching mounting hole, and described torsion spring is for maintaining the drive end of handoff block to hold out against all the time
Switching ring inner side；
Described switching ring outside is additionally provided with latch drive division；
Described load bar with handoff block correspondence position on be provided with switching slot, the clamping end of described handoff block loads switching slot
In；
Handling through hole is provided with described slide cartridge, restraining position ring block is fixed in described handling through hole, be provided with described spacing ring
One can allow the ejection through hole that load bar passes through；The maximum gauge of described switching ring is without departing from spacing ring diameter；
Described spacing ring dorsad switches ring one end and is provided with mounting ring, is provided with described mounting ring and clamps hole and described dress
At least two slip grooves are provided with ring-side wall；
Described clamping be provided with hole quantity and slide groove identical clamping arc plate, and described clamping arc plate is including for blocking
The arc plate part and the Slipper through slip groove of tight sample, described Slipper can be slided in groove is slided, and
Described Slipper end is clamping inclined-plane；
Described clamping inclined-plane coordinates with driving inclined-plane, and described driving inclined-plane is arranged on and drives cylinder inner side and described driving cylinder
Outside is fixed with handling through-hole wall；
Described driving inclined-plane is the inclined-plane toward load bar direction gradually up from sample；
There is a groove between the driving cylinder inner face and the spacing ring inner face of spacing ring of described driving cylinder；
Well width is L3 between groove between described；
The distance between described resigning end end and resigning trench bottom are L2；
The distance between load bar inner face and driving cylinder inner face of described load bar are L1；
The relation of L1, L2, L3 is：
(L3/8)<L1<(L3/5)；1.5*L2>L1>L2.
As a further improvement on the present invention, described load bar is connected with the telescopic shaft of hydraulic jack or is directly hydraulic pressure
The telescopic shaft of oil cylinder.
As a further improvement on the present invention, described top baffle ring end face is provided with switching ring, in described switching ring
Heart line is with component ring, load bar on the same line.
As a further improvement on the present invention, described latch drive part is that can be engaged with outer gear or tooth bar etc.
Tooth form.
As a further improvement on the present invention, described L2 is at least shorter than L1 more than 1 millimeter.
As a further improvement on the present invention, also including sampling frid, it is described be clamped on two pulling assembly A between, institute
The sampling frid stated is provided with the circular arc sampling groove that a cross section is not more than 1/2 circle；
The axis and assembling ring axis of the internal diameter of described sampling frid, external diameter sampling frid identical with mounting ring and described
Overlap.
As a further improvement on the present invention, a guiding inner ring, described guiding inner ring are fixed on hole inwall is clamped
Thickness should be at least 1.2 times of arc plate part thickness and is oriented to inner ring internal diameter should be not less than specimen finish；
One being fixed on described driving cylinder outer face and being oriented to semi-ring outward, described outer guiding semi-ring cross section is no more than 1/2
The semicircular ring of annulus；
Card holding trough, described card holding trough and sampling frid two are formed between described outer guiding semi-ring inwall and guiding endocyclic outer wall
End assembling.
As a further improvement on the present invention, after described sampling frid is assembled with card holding trough, sampling groove is opening up.
As a further improvement on the present invention, it is described also including the carriage assembly for lifting and transporting sampling frid
Bracket component, including, the support semi-ring for supporting sampling frid；Described support semi-ring bottom is connected with lifting screw top
Fixed, described lifting screw bottom is assembled with cylinder is driven through supporting plate by threaded engagement；
Described supporting plate is provided with installation tray, and pickup axle passes through the through hole for being arranged on and installing on tray, described pickup axle
Have on two and described pickup axle and pickup cam is installed, wherein pickup belt wheel is installed on a pickup axle one end, it is another
Secondary pickup belt wheel is installed on root pickup axle, connects to be formed by pickup belt between described pickup belt wheel and secondary pickup belt wheel
V belt translation structure；
A pickup axle therein is connected away from pickup belt one end with pickup motor output shaft；Described pickup motor energy
Pickup axle is enough driven to rotate；
Described supporting plate bottom is fixed with the axis of guide, and the described axis of guide is assembled with to supporting plate with the guide through hole on cabinet
Offer guide effect is provided；
Described lifting screw bottom be fitted into cabinet and with drive cylinder screw-internal thread fit；
Described driving cylinder has two and wherein one to drive to be fixed with driving pulley and driven gear on cylinders, another driving cylinder
On be fixed with driven pulley；
Connect and form V belt translation structure by lifting Timing Belt between described driving pulley and driven pulley；
Described driven gear is intermeshed to form gear transmission structure with driving gear, and described driving gear is arranged on lifting
On the output shaft of motor；
Described sampling frid is provided with pickup groove, and described pickup cam section is ellipse, and described pickup cam bag
The maximum longitudinal end of diameter and the minimum short axle end of diameter are included, described short axle end peak is no more than sampling trench bottom；
Described cabinet bottom is provided with movable block, and described movable block screws assembling, described shifting by screw thread and mobile screw
Dynamic screw rod two ends are separately fixed in the first fixed plate and the second fixed plate, and described mobile screw can be fixed relative to first
Plate and the second fixed plate are rotated；
Described mobile screw has two, wherein being fixed with mobile belt wheel on an one end, secondary shifting is fixed with another one end
Movable belt pulley and secondary driving pulley；V belt translation knot is connected by mobile belt and formed between described mobile belt wheel and secondary mobile belt wheel
Structure；
Described secondary driving pulley is connected by main drive belt with main driving pulley and forms V belt translation structure；
Described main driving pulley is fixed on the output shaft of main drive motor.
As a further improvement on the present invention, described longitudinal end peak exceedes 0.5-1.2 millimeters of trench bottom of sampling.
A kind of experimental technique based on above-mentioned experimental provision, comprises the following steps：
S1, sample two ends is respectively charged into and clamps the arc plate part inner side for making clamping arc plate in hole and sample contact outside；
S2, rotates switching ring, the drive end of handoff block is held out against with protrusion side plate bending by holding out against to switch to depression side plate bending, this
When, the clamping end of handoff block is snapped in switching slot；
S3, starts hydraulic jack, load bar is produced thrust to slide cartridge, slide cartridge is driven driving inclined-plane and the clamping of clamping inclined-plane；
S4, rotates switching ring again, makes drive end recover to be held out against with depression side plate bending, and now, switching slot is exited at clamping end；
S5, reverse drive hydraulic jack makes load bar produce away from the pulling force on sample direction, is broken until by sample, this
During tension-strain curve is obtained by the oil inlet quantity of hydraulic jack, loading draw-bar pull；
S6, takes out the sample after breaking, and the stretching assembly of both sides is pulled to with away from sample direction first, until two cards
Then tankage can install sampling frid with sampling frid assembling, load bar is applied pressure towards sample direction, until
Ejection sample is in sampling groove.
As a further improvement on the present invention, it is 0.1MP-0.5MP that load bar produces thrust to slide cartridge in S3.This can either
Ensure arc plate part clamping sample, be prevented from having influence on the tensile strength of sample again, so as to cause test inaccurate.
The beneficial effects of the invention are as follows：
1st, the present invention can securely fix sample two ends, prevent the potential safety hazard that sample comes off and causes in experimentation.
2nd, the present invention can quickly and easily take out sample, so as to improve conventional efficient after experiment terminates.
3rd, stretching assembly of the invention can produce self-locking clamping when being stretched to sample, and need to take out examination
Then sample can be released clamping assembly, very convenient, practicality during sample.
4th, the present invention takes out sample using sampling frid, is prevented from sample and is dropped in taking-up, and two ends examination
Sample can be fetched into sampling frid simultaneously, very convenient, fast.
5th, the present invention can realize releasing experiment while arc plate part unclamps sample end when sample is taken out, and make
The taking-up for obtaining sample becomes very convenient.
6th, component of lifting of the invention can be realized being lifted by sampling groove plate support, transfer sample, can either solve sample
The potential safety hazard for easily dropping, can effectively protect sample, for follow-up research provides basis again.
7th, the present invention realizes that sample is fetched into sampling groove automatically by pickup cam, saves manpower, improves and reality
Test efficiency.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention.
Fig. 2 is that a kind of stretching assembly structure of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention is shown
It is intended to.
Fig. 3 is that a kind of stretching assembly structure of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention is shown
It is intended to.
Fig. 4 is that a kind of stretching assembly structure of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention is shown
It is intended to.
Fig. 5 is that a kind of stretching assembly of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention is overlooked
Figure.
Fig. 6 is a kind of stretching assembly forward sight of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention
Figure.
Fig. 7 is enlarged drawing at F1 in Fig. 6.
Fig. 8 is a kind of stretching assembly section of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention
Figure.
Fig. 9 is enlarged drawing at F3 in Fig. 8.
Figure 10 is enlarged drawing at F2 in Fig. 8.
Figure 11 is a kind of stretching assembly section of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention
Figure.
Figure 12 is a kind of dismounting sample state of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention
Figure.
Figure 13 is a kind of dismounting sample state of the experimental provision specific embodiment for testing Tensile Strength of Rock of the present invention
Figure.
Figure 14 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Figure 15 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Figure 16 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Figure 17 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Figure 18 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Figure 19 is that a kind of structure for lifting component specific embodiment for being applied to test Tensile Strength of Rock of the present invention is shown
It is intended to.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples：
Referring to Fig. 1 to Figure 11, a kind of experimental provision of test Tensile Strength of Rock, including guide plate 100, guide post 200, stretching
Component A, described guide plate 100 is provided with through hole, and guide post 200 is slidably assembled through through hole with guide plate 100；
Described guide plate 100 has two pieces, and every piece of outside of guide plate 100 is respectively and fixedly provided with stretching assembly A；
Described stretching assembly A, including, it is fixed on the component ring A100 on load bar 300, described load bar 300 and hydraulic pressure
The telescopic shaft connection of oil cylinder is directly the telescopic shaft of hydraulic jack, and described component ring A100 cuts with scissors with component pole A200 one end
Connect, the described component pole A200 other ends are hinged with the slide cartridge junction A304 on slide cartridge A300, described component pole
A200 at least two, and two ends are evenly distributed on component ring A100 and slide cartridge A300 ends, so enable to load bar 300
The power on the A304 of each slide cartridge articulated section by component pole A200 to slide cartridge A300 is uniform；
Described slide cartridge A300 also includes top baffle ring A301, slipper A303, bottom baffle ring A302, described slipper
A303 passes through guide plate 100, described top baffle ring A301 and bottom baffle ring A302 to be located at respectively on the outside of guide plate 100 and interior
Side；
Slot to make way A3031 is provided with described slipper A303, described top baffle ring A301 is corresponding with slot to make way A3031
Position is provided with connection groove A3011, and described connection groove A3011 sections are less than slot to make way A3031 sections；
The resigning end A3041 that is hinged of described slide cartridge articulated section A304 is fitted into slot to make way A3041, and slide cartridge articulated section A304 with
Component pole A200 hinged ends pass connection groove A3011；
Described top baffle ring A301 end faces are provided with switching ring A400, described switching ring A400 center lines and component ring
A100, load bar 300 are on the same line；
Described switching ring A400 inwalls are made up of several protrusion side plate bending A4021 and depression side plate bending A4022, and described are cut
Handoff block A403 is provided with ring change A400 endoporus, described handoff block A403 is by switching connecting pin A404 with switching mounting seat
Switching mounting hole A40231 assemblings on A4023, and described switching connecting pin A404 loads switching mounting hole A40231 middle parts
It is additionally provided with torsion spring A405 on point, described torsion spring A405 is used to maintaining the drive end A4032 of handoff block A403 to hold out against all the time cutting
Ring change A400 inner sides；
Described switching ring A400 outsides are additionally provided with latch drive division A401, and described latch drive part A401 can be for can be with
The tooth form of the engagement such as outer gear or tooth bar, is mainly used in driving switching ring A400 to rotate；
Described load bar 300 with handoff block A403 correspondence positions on be provided with switching slot 301, the card of described handoff block A403
Tight end A4031 can be fitted into switching slot 301；
Handling through hole A3032 is provided with described slide cartridge A300, restraining position ring block A500 is fixed in described handling through hole A3032,
An ejection through hole A501 that load bar can be allowed to pass through is provided with described spacing ring A500；
The maximum gauge of described switching ring A400 is without departing from spacing ring A500 diameters；
Described spacing ring A500 dorsad switches ring A400 one end and is provided with mounting ring A502, is provided with described mounting ring A502
Clamp hole A5021 and described mounting ring A502 sides wall is provided with least 2 and slides groove A5022；
Described clamping is provided with quantity and slides groove A5022 identical clamping arc plate A900, described clamping in the A5021 of hole
Arc plate A900 includes the arc plate part A901 and the Slipper A902 through slip groove A5022 for clamping sample 400, institute
The Slipper A902 for stating can be slided in groove A5022 is slided, and described Slipper A902 ends are clamping inclined-plane
A9021；
Described clamping inclined-plane A9021 and driving inclined-plane A801 coordinates, and described driving inclined-plane A801 is arranged on driving cylinder A800
Fixed with handling through hole A3032 inwalls on the outside of inner side and described driving cylinder A800；
Between having between the spacing ring inner face A503 of the driving cylinder inner face A802 and spacing ring A500 of described driving cylinder A800
Groove B100；
Well width is L3 between groove B100 between described；
The distance between described resigning end A3041 ends and slot to make way A3031 bottoms are L2；
The distance between load bar inner face 302 and driving cylinder inner face A802 of described load bar 300 are L1（As eject
Via depth）；
The relation of L1, L2, L3 is：
(L3/8)<L1<(L3/5)；
L1>L2；Described L2 is at least shorter than L1 more than 1 millimeter.
Referring to Figure 12-Figure 13, further, in order to convenient, the sample 300, Ke Yi after experiment is rapidly taken out
One piece of sampling frid B200, described sampling frid B200 are fixed before taking-up sample 300 between two pulling assembly A and is provided with one
Cross section is not more than the circular arc sampling groove B201 of 1/2 circle；
The axis of the internal diameter of described sampling frid B200, external diameter sampling frid B200 identical with mounting ring A502 and described
Overlapped with mounting ring A502 axis.
Further, during in order to easily fixed sampling frid B200 without causing sampling frid B200 to use
Do not allow to be fixed easily and cause using inconvenience, a guiding inner ring A600 can be fixed on hole A5021 inwalls are clamped, described leads
At least 1.2 times of arc plate part A901 thickness are should be to inner ring A600 thickness, i.e., described guiding inner ring A600 is in cross section
Upper partial occlusion arc plate part A901, but described guiding inner ring A600 internal diameters should be not less than the diameter of sample 400, and this is main
It is to prevent from being oriented to clamping for inner ring A600 obstruction samples 400；
One is fixed on described driving cylinder A800 outer faces be oriented to semi-ring A700, described outer guiding semi-ring A700 cross sections outward
It is no more than the semicircular ring of 1/2 annulus；
Card holding trough A701, described card holding trough are formed between described outer guiding semi-ring A700 inwalls and guiding inner ring A600 outer walls
A701 can be assembled with sampling frid B200 two ends.
Further, after described sampling frid B200 and card holding trough A701 assemblings, sampling groove B201 is opening up.
Referring to Figure 14-Figure 19 further, it is described also including the carriage assembly for lifting and transporting sampling frid B200
Bracket component, including, the support semi-ring C100 for supporting sampling frid B200, described support semi-ring C100 can with take
Sample frid B200 is fixed or is detachably connected；
Described support semi-ring C100 bottoms are connected with lifting screw C101 tops, and described lifting screw C101 bottoms are worn
Supporting plate C400 is crossed to be assembled by threaded engagement with cylinder C102 is driven；
Described lifting screw C101 outsides are provided with external screw thread, and internal thread is provided with described driving cylinder C102, and described is outer
Screw thread can mutually screw assembling with internal thread；
It is logical on installation tray C402 through being arranged on that described supporting plate C400 is provided with installation tray C402, pickup axle C311
Hole, described pickup axle C300 has on two and described pickup axle C300 and is provided with pickup cam C300, wherein a pickup
Pickup belt wheel C911 is installed on axle C300 one end, secondary pickup belt wheel C912 is installed on another pickup axle C300, it is described
Connect to form V belt translation structure by pickup belt C913 between pickup belt wheel C911 and secondary pickup belt wheel C912；
A pickup axle C300 therein is connected away from pickup belt C913 one end with pickup motor C801 output shafts；It is described
Pickup motor C801 can drive pickup axle rotate；
Described supporting plate C400 bottoms are fixed with axis of guide C401, and the guiding on described axis of guide C401 and cabinet C500 is led to
C502 assemblings in hole move up and down offer guide effect with to supporting plate C400；
Described lifting screw C101 bottoms be fitted into cabinet C500 and with drive cylinder C102 screw-internal thread fits；
Described driving cylinder C102 has two and wherein one to drive be fixed with driving pulley C941 and driven gear on cylinder C102
C951, driven pulley C942 is fixed with another driving cylinder C102；
Connect and form V belt translation knot by lifting Timing Belt C943 between described driving pulley C941 and driven pulley C942
Structure；
Described driven gear C951 and driving gear C952 is intermeshed to form gear transmission structure, described driving gear
C952 is arranged on the output shaft of lifting motor C803.When using, lifting motor C803 drives two by driving gear C952
Drive cylinder C102 to rotate, due to driving cylinder to fix in the chassis, therefore when driving cylinder to rotate, can just drive lifting screw C101 driving
Up/down movement in dynamic cylinder；
Described sampling frid B200 is provided with pickup groove B202, and described pickup cam C300 sections are oval and described
Pickup cam include the maximum longitudinal end C302 of the diameter and minimum short axle end C301 of diameter, described short axle end C301 highests
Point is no more than sampling groove B201 bottoms；Described longitudinal end C302 peaks are slightly above sampling groove B201 bottoms（More than sampling groove
0.5-1.2 millimeters of B201 bottoms）.During original state, short axle end C301 is at the highest notch, when sampling frid B200 two ends and clamp
After groove A701 is fixed, sampling motor C801 starts to drive pickup cam C300 to rotate, and the longitudinal end C302 of pickup cam C300 is just
Can be rubbed with the bottom of sample 400, after sample 400 is released, described pickup cam is taken sample by this friction
Go out in stretching assembly（Equivalent to conveying rolling）；
Described cabinet C500 bottoms are provided with movable block C501, and described movable block C501 is by screw thread and mobile screw C700 rotations
Attach together and match somebody with somebody, described mobile screw C700 two ends are separately fixed on the first fixed plate C601 and the second fixed plate C602, and institute
The mobile screw C700 for stating can be rotated relative to the first fixed plate C601 and the second fixed plate C602；
Described mobile screw C700 has two, wherein mobile belt wheel C921 is fixed with an one end, it is solid on another one end
Surely there is secondary mobile belt wheel C922 and secondary driving pulley C922；By moving between described mobile belt wheel C921 and secondary mobile belt wheel C922
Dynamic belt C923 is connected and is formed V belt translation structure；
Described secondary driving pulley C932 is connected by main drive belt C933 with main driving pulley C931 and forms V belt translation knot
Structure；
Described main driving pulley C931 is fixed on the output shaft of main drive motor C802.When using, main drive motor passes through
Main drive belt drives mobile screw to rotate, and when mobile screw is rotated, cabinet can just be moved on mobile screw axial direction.
This can be realized as sample being fetched into specified location, to facilitate operator to take out.
Experimental technique based on above-mentioned experimental provision：
S1, the two ends of sample 400 is respectively charged into and clamps the arc plate part A901 inner sides for making clamping arc plate A900 in the A5021 of hole and examination
The contact outside of sample 400；
S2, rotates switching ring A400, the drive end A4032 of handoff block A403 is switched to by being held out against with depression side plate bending A4022
Held out against with protrusion side plate bending A4021, now, the clamping end A4031 of handoff block A403 is snapped in switching slot 301；
S3, starts hydraulic jack, makes load bar 300, and thrust is produced to slide cartridge 300.Now, slide cartridge A300 can drive spacing ring
A500 is moved to the direction of sample 300, while mounting ring A502 can drive clamping arc plate A900 to be moved to the direction of sample 300；This is just
Clamping inclined-plane A9021 is set to be subjected to displacement with driving inclined-plane A801, and driving inclined-plane A801 can be by clamping arc plate A900 to sample 300
Direction promotes, and makes clamping arc plate A900 clamping samples 300；
S4, rotates switching ring A400 again, makes drive end A4032 recover to be held out against with depression side plate bending A4022, now, clamping end
A4021 exits switching slot 301；
S5, reverse drive hydraulic jack makes load bar 300 produce away from the pulling force on the direction of sample 300, is drawn until by sample
It is disconnected, now tension-strain curve can be obtained by the oil inlet quantity of hydraulic jack, pulling force etc..
S6, cabinet reaches sample lower section and sample is just right with sampling groove B201 to drive main drive motor to make；
S7, drive god by lifting motor when sampling frid B200 reach with card holding trough A701 just to position, then load bar drive
Dynamic stretching assembly, assembles card holding trough A701 and sampling frid B200 two ends；
S8, takes out the sample after breaking, and the stretching assembly A of both sides is pulled to with away from sample direction first, until two
Then card holding trough A701 can install sampling frid B200 with the B200 assemblings of sampling frid, finally make load bar 300 towards sample
300 directions apply pressure.During this, because L2 is less than L1, therefore load bar inner face 302 can be in resigning end A3041 contacts
With the ends contact of sample 300 after to slot to make way A3031 bottom surfaces, and during this, component pole A200 can first promote slide cartridge
A300 is moved to the direction of sample 400, and this just makes driving inclined-plane A801 and clamping inclined-plane A9021 be moved toward direction is unclamped, i.e. arc plate
Part A901 unclamps with the end of sample 400；
And can be with the end contact of sample 400 and by sample 400 toward departing from slide cartridge A300 directions in follow-up load bar inner face 302
In the loose B200 to sampling frid in top, in this process, arc plate part A901 further can unclamp with sample 300.Finally use hand
Or be fetched into sample 300 in sampling groove B201 by other instruments, sampling frid is then held, by stretching assembly toward away from sample
Direction is removed makes sampling frid depart from card holding trough A701.
S9, drives pickup motor, rotates pickup cam C300, and sample is taken out into stretching assembly；
Stretching assembly toward being pulled open away from sample direction, frid B200 is sampled until card holding trough A701 departs from by S10, load bar；
S11, stops sampling motor, drives lifting motor, sampling frid B200 is decreased below the position of guide post 200, stops
Only lifting motor；
S12, starts main drive motor, rotates mobile screw, and cabinet and sampling frid are moved into specified location.
Further, described pickup cam is made of soft, wear-resistant material, such as rubber, silica gel.
Preferred embodiment of the invention described in detail above.It should be appreciated that one of ordinary skill in the art without
Need creative work just can make many modifications and variations with design of the invention.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical scheme, all should be in the protection domain being defined in the patent claims.
Claims (10)
1. a kind of experimental provision for testing Tensile Strength of Rock, including guide plate, guide post, stretching assembly, described guide plate
Through hole is provided with, guide post is slidably assembled through through hole with guide plate；
Described guide plate has two pieces, and every piece of guide plate outside is respectively and fixedly provided with stretching assembly；It is characterized in that：
Described stretching assembly, including, the component ring on load bar is fixed on, described component ring cuts with scissors with component pole one end
Connect, the described component pole other end is hinged with the slide cartridge junction on slide cartridge, described component pole at least two, and two
End is evenly distributed on component ring and slide cartridge end；
Described slide cartridge also includes top baffle ring, slipper, bottom baffle ring, and described slipper passes through guide plate, described
Top baffle ring and bottom baffle ring respectively be located at guide plate outside and inner side；
It is provided with slot to make way in described slipper, described top baffle ring is being connected logical with being provided with slot to make way correspondence position
Groove, described connection groove section is less than resigning slot cross-section；
The resigning end that is hinged of described slide cartridge articulated section is fitted into slot to make way, and slide cartridge articulated section passes with component pole hinged end
Connection groove；
Described switching ring inwall is made up of protrusion side plate bending and depression side plate bending, and is provided with switching in described switching ring endoporus
Block, described handoff block is assembled by switching connecting pin with the switching mounting hole in switching mounting seat, and described switching connection
Pin is additionally provided with torsion spring on part in being fitted into switching mounting hole, and described torsion spring is for maintaining the drive end of handoff block to hold out against all the time
Switching ring inner side；
Described switching ring outside is additionally provided with latch drive division；
Described load bar with handoff block correspondence position on be provided with switching slot, the clamping end of described handoff block loads switching slot
In；
Handling through hole is provided with described slide cartridge, restraining position ring block is fixed in described handling through hole, be provided with described spacing ring
One can allow the ejection through hole that load bar passes through；The maximum gauge of described switching ring is without departing from spacing ring diameter；
Described spacing ring dorsad switches ring one end and is provided with mounting ring, is provided with described mounting ring and clamps hole and described dress
At least two slip grooves are provided with ring-side wall；
Described clamping be provided with hole quantity and slide groove identical clamping arc plate, and described clamping arc plate is including for blocking
The arc plate part and the Slipper through slip groove of tight sample, described Slipper can be slided in groove is slided, and
Described Slipper end is clamping inclined-plane；
Described clamping inclined-plane coordinates with driving inclined-plane, and described driving inclined-plane is arranged on and drives cylinder inner side and described driving cylinder
Outside is fixed with handling through-hole wall；
Described driving inclined-plane is the inclined-plane toward load bar direction gradually up from sample；
There is a groove between the driving cylinder inner face and the spacing ring inner face of spacing ring of described driving cylinder；
Well width is L3 between groove between described；
The distance between described resigning end end and resigning trench bottom are L2；
The distance between load bar inner face and driving cylinder inner face of described load bar are L1；
The relation of L1, L2, L3 is：
(L3/8)<L1<(L3/5)；1.5*L2>L1>L2.
2. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：Described top baffle ring
End face is provided with switching ring, and described switching ring center line is with component ring, load bar on the same line.
3. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：Described latch drives
Part is the tooth form that can be engaged with outer gear or tooth bar etc..
4. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：Also include sampling groove
Plate, it is described be clamped on two pulling assembly A between, described sampling frid is provided with the circular arc that a cross section is not more than 1/2 circle
Shape sampling groove；
The axis and assembling ring axis of the internal diameter of described sampling frid, external diameter sampling frid identical with mounting ring and described
Overlap.
5. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：On hole inwall is clamped
A guiding inner ring is fixed, described guiding inner ring thicknesses should be at least 1.2 times of arc plate part thickness and are oriented in inner ring
Footpath should be not less than specimen finish；
One being fixed on described driving cylinder outer face and being oriented to semi-ring outward, described outer guiding semi-ring cross section is no more than 1/2
The semicircular ring of annulus；
Card holding trough, described card holding trough and sampling frid two are formed between described outer guiding semi-ring inwall and guiding endocyclic outer wall
End assembling.
6. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：Described sampling frid
After card holding trough assembling, sampling groove is opening up.
7. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 1, it is characterized in that：Also include for lifting
With transport sampling frid carriage assembly, described bracket component, including, for support sampling frid support semi-ring；It is described
Support semi-ring bottom and lifting screw top be connected, described lifting screw bottom passes through through supporting plate with driving cylinder
Threaded engagement is assembled；
Described supporting plate is provided with installation tray, and pickup axle passes through the through hole for being arranged on and installing on tray, described pickup axle
Have on two and described pickup axle and pickup cam is installed, wherein pickup belt wheel is installed on a pickup axle one end, it is another
Secondary pickup belt wheel is installed on root pickup axle, connects to be formed by pickup belt between described pickup belt wheel and secondary pickup belt wheel
V belt translation structure；
A pickup axle therein is connected away from pickup belt one end with pickup motor output shaft；Described pickup motor energy
Pickup axle is enough driven to rotate；
Described supporting plate bottom is fixed with the axis of guide, and the described axis of guide is assembled with to supporting plate with the guide through hole on cabinet
Offer guide effect is provided；
Described lifting screw bottom be fitted into cabinet and with drive cylinder screw-internal thread fit；
Described driving cylinder has two and wherein one to drive to be fixed with driving pulley and driven gear on cylinders, another driving cylinder
On be fixed with driven pulley；
Connect and form V belt translation structure by lifting Timing Belt between described driving pulley and driven pulley；
Described driven gear is intermeshed to form gear transmission structure with driving gear, and described driving gear is arranged on lifting
On the output shaft of motor；
Described sampling frid is provided with pickup groove, and described pickup cam section is ellipse, and described pickup cam bag
The maximum longitudinal end of diameter and the minimum short axle end of diameter are included, described short axle end peak is no more than sampling trench bottom；
Described cabinet bottom is provided with movable block, and described movable block screws assembling, described shifting by screw thread and mobile screw
Dynamic screw rod two ends are separately fixed in the first fixed plate and the second fixed plate, and described mobile screw can be fixed relative to first
Plate and the second fixed plate are rotated；
Described mobile screw has two, wherein being fixed with mobile belt wheel on an one end, secondary shifting is fixed with another one end
Movable belt pulley and secondary driving pulley；V belt translation knot is connected by mobile belt and formed between described mobile belt wheel and secondary mobile belt wheel
Structure；
Described secondary driving pulley is connected by main drive belt with main driving pulley and forms V belt translation structure；
Described main driving pulley is fixed on the output shaft of main drive motor.
8. a kind of experimental provision for testing Tensile Strength of Rock as claimed in claim 7, it is characterized in that：Described longitudinal end is most
High point exceedes 0.5-1.2 millimeters of trench bottom of sampling.
9. a kind of experimental technique based on any described experimental provisions of claim 1-8, it is characterized in that：Comprise the following steps：
S1, sample two ends is respectively charged into and clamps the arc plate part inner side for making clamping arc plate in hole and sample contact outside；
S2, rotates switching ring, the drive end of handoff block is held out against with protrusion side plate bending by holding out against to switch to depression side plate bending, this
When, the clamping end of handoff block is snapped in switching slot；
S3, starts hydraulic jack, load bar is produced thrust to slide cartridge, slide cartridge is driven driving inclined-plane and the clamping of clamping inclined-plane；
S4, rotates switching ring again, makes drive end recover to be held out against with depression side plate bending, and now, switching slot is exited at clamping end；
S5, reverse drive hydraulic jack makes load bar produce away from the pulling force on sample direction, is broken until by sample, this
During tension-strain curve is obtained by the oil inlet quantity of hydraulic jack, loading draw-bar pull；
S6, takes out the sample after breaking, and the stretching assembly of both sides is pulled to with away from sample direction first, until two cards
Then tankage can install sampling frid with sampling frid assembling, load bar is applied pressure towards sample direction, until
Ejection sample is in sampling groove.
10. experimental technique as claimed in claim 9, it is characterized in that, it is 0.1MP- that load bar produces thrust to slide cartridge in S3
0.5MP。
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| CN201611187586.2A CN106706427B (en) | 2016-12-20 | 2016-12-20 | A kind of experimental provision and its experimental method for testing Tensile Strength of Rock |
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| CN201611187586.2A CN106706427B (en) | 2016-12-20 | 2016-12-20 | A kind of experimental provision and its experimental method for testing Tensile Strength of Rock |
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| CN108693035A (en) * | 2018-05-15 | 2018-10-23 | 安徽理工大学 | A kind of Tensile Strength of Rock test device and its test method |
| CN118347542A (en) * | 2024-06-14 | 2024-07-16 | 中航光电华亿(沈阳)电子科技有限公司 | Vibration temperature composite sensor with high electromagnetic interference resistance |
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| JP2008209228A (en) * | 2007-02-26 | 2008-09-11 | Kochi Univ Of Technology | Tensile test tool and method for concrete |
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| Publication number | Publication date |
|---|---|
| CN106706427B (en) | 2019-02-01 |
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