CN110361241A - A kind of rocks in direct tension sample quick preparation device and preparation method - Google Patents
A kind of rocks in direct tension sample quick preparation device and preparation method Download PDFInfo
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- CN110361241A CN110361241A CN201910745058.1A CN201910745058A CN110361241A CN 110361241 A CN110361241 A CN 110361241A CN 201910745058 A CN201910745058 A CN 201910745058A CN 110361241 A CN110361241 A CN 110361241A
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- steel bushing
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- 239000011435 rock Substances 0.000 title claims abstract description 210
- 238000002360 preparation method Methods 0.000 title claims abstract description 56
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 274
- 239000010959 steel Substances 0.000 claims abstract description 274
- 239000004033 plastic Substances 0.000 claims abstract description 79
- 229920003023 plastic Polymers 0.000 claims abstract description 79
- 230000007246 mechanism Effects 0.000 claims abstract description 39
- 238000000034 method Methods 0.000 claims abstract description 20
- 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 abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims description 25
- 239000003292 glue Substances 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 11
- 238000005553 drilling Methods 0.000 claims description 9
- 238000005065 mining Methods 0.000 claims description 7
- 238000004873 anchoring Methods 0.000 claims description 6
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/364—Embedding or analogous mounting of samples using resins, epoxy
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/026—Specifications of the specimen
- G01N2203/0298—Manufacturing or preparing specimens
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The present invention relates to a kind of rocks in direct tension sample quick preparation device and preparation methods, belong to rock mechanics experiment technical field, the device includes pedestal and inverted L shape bracket, pedestal and inverted L shape bracket form basic framework, basic framework inboard, upright is provided with sliding rail, it is provided with the sliding block being matched therewith on sliding rail, rotation pull down mechanism is connected with by the first connector on sliding block, is provided with steel bushing below rotation pull down mechanism；It is sequentially installed with horizontal adjustment platform, tilt adjustment platform and magnechuck A on pedestal, a steel bushing is adsorbed on magnechuck A, rocks in direct tension sample includes rock stick, the steel pipe for being set in rock stick both ends and the plastics buckle closure for being located at steel pipe both ends.The device of the invention and method can quickly prepare high-precision both-end steel pipe felted rocks in direct tension sample using rotation pull-down pattern, the defects of cementing uneven, cementing eccentric can effectively be excluded, with the advantages that economic convenient, structure is simple, flexible operation.
Description
Technical field
The present invention relates to rock mechanics experiment technical field, especially a kind of rocks in direct tension sample quickly prepares dress
Set and the preparation method of sample and using the sample carry out tension test method.
Background technique
Tensile strength is an important mechanics parameter of rock, many rock materials occur to destroy or unstability often caused by
Caused by partly or wholly bearing tensile stress, rock mass tensile failure is also common Failure type in Practical Project.Underground chamber
The redistribution that can cause ambient stress with the excavation in tunnel is easy to appear tensile stress in vault or abutment wall position；Artificial side
Near the surface of slope, due to the presence on the scope of freedom, tensile stress is also frequently present of；During coal mining or tunnelling, emit
The dynamic disasters accident such as top, bump and coal and gas prominent happens occasionally, these often also with coal rock layer tensile failure
It is related.Therefore, the tensile strength of Accurate Determining engineering correlation rock mass, it is significant to engineering and personnel safety.
The main method of measurement Tensile Strength of Rock has uniaxial direct tensile method, Brazilian split the law, square plate to axis pressure at present
Method, disk bend tension method and hydraulic fracturing etc. are split, the most commonly used is uniaxial direct tensile methods and Brazilian split the law.Brazilian diametral compression test
Enough information needed for acquired results cannot obtain problem analysis sometimes, or even cannot reflect the essence of problem, which limits
The further development and application of this research method.Direct tensile test result is more in line with the actual conditions of rock tension, but
It is that rock sample processing is relatively difficult, it is costly；And in sample preparation or test, human factor is affected, test specimen place compared with
Slowly, it is unfavorable for carrying out high-volume experimental test；In addition it tests in loading procedure since sample precision is inadequate or load is unreasonable, has
When will appear eccentric tension, it cannot be guaranteed that pulling force pass through sample central axis.Therefore, in order to accelerate test speed, improve test essence
The security reliability of exactness, simultaneously guarantee test process, it is necessary to develop a kind of precisely quick rocks in direct tension sample
Preparation facilities and test method.
Summary of the invention
In view of the deficiencies of the prior art, the invention proposes a kind of rocks in direct tension sample quick preparation device and preparations
Method, and the apparatus structure is compact, easy to operate, can quickly prepare rocks in direct tension sample, preparation efficiency is high.
The invention adopts the following technical scheme:
On the one hand, the present invention provides a kind of rocks in direct tension sample quick preparation device, including pedestal and inverted L shape branch
Frame, the pedestal and inverted L shape bracket form basic framework, and basic framework inboard, upright is provided with sliding rail, is arranged on the sliding rail
There is a sliding block being matched therewith, rotation pull down mechanism, machine drawing under the rotation are connected with by the first connector on the sliding block
It is provided with steel bushing below structure, rock stick can be rotated into the steel pipe for being inoculated with appropriate cementing agent by the rotation pull down mechanism,
The steel pipe other end is blocked with plastics buckle closure to prevent glue from flowing out；
Horizontal adjustment platform, tilt adjustment platform and magnechuck A, the magnechuck are sequentially installed on the pedestal
Adsorb a steel bushing on A, the steel bushing for placing rocks in direct tension sample, the rocks in direct tension sample include rock stick,
The steel pipe for being set in rock stick both ends and the plastics buckle closure for being located at steel pipe both ends, i.e. rocks in direct tension sample include 1 rock
Stick, 2 steel pipes and 2 plastics buckle closures pass through cementing agent between the rock stick and steel pipe and between rock stick and plastics buckle closure
It being bonded together, rock stick herein preferably uses high-precision core drilling rig to be made, and the part being bonded in steel pipe is cementing clamping end,
Intermediate free segment is test portion.
Preferably, the rotation pull down mechanism include bearing block, bearing, shaft and under pull handle, the bearing block passes through
First connector connect with sliding block and sliding block can be followed to move up and down along sliding rail, and first connector vertically connects including one
Fishplate bar and horizontal connecting plate, the vertical connecting plate are fixed by bolts in sliding block side, bolt fixing axle on horizontal connecting plate
Seat is held, is provided with through-hole in the middle part of horizontal connecting plate, bearing is installed on bearing block, shaft passes through through-hole and the fixed company of bearing inner race
It connects；
The shaft is fixedly arranged above rotating disk, is provided with the second connector, second connector below the shaft
Steel bushing is bolted；
Preferably, it pulls handle under described and is set to bearing block two sides, for manually moving up and down.
Preferably, the steel bushing plays the effect for placing plastics buckle closure and steel pipe zoarium, and steel bushing need not be too high, the steel
Set internal diameter is matched with plastics buckle closure outer diameter, and the internal diameter of plastics buckle closure is matched with outer diameter of steel pipes size；Due to prefabricated rock
When stone uniaxial direct tensile sample, appropriate amount of fluid cementing agent can be previously implanted in steel pipe, it is necessary to lower end is blocked using plastics buckle closure,
Purpose is, rock stick is bonded in the steel pipe blocked using plastics buckle closure, economic cost can be saved, because steel pipe can be by standard
Steel pipe is cut, then is covered with cheap plastics buckle closure, steel bushing of the cost far below finishing.
The thickness of the plastics buckle closure should not be thicker, preferably 0.5-1mm, otherwise will substantially reduce magnechuck to steel pipe
Adsorption capacity.
Preferably, the material of pedestal is preferably aluminium alloy, is provided on pedestal multiple rows of for fixing horizontal adjustment platform
Fixing groove, fixing groove are groove, and the threaded hole in structure size and horizontal adjustment platform cooperates, and rectangular spiral shell is placed in groove
Mother, to be fastened horizontal adjustment platform on the base using bolt, tilt adjustment platform and horizontal adjustment platform use bolt
Connection, magnechuck A are also connected by screw bolts with tilt adjustment platform；
Preferably, the horizontal adjustment platform is straight-line ball type XY axis slide unit, and it is limited preferably to fold industrial (Dalian)
Company's production, model XYMD100 have left and right, front and back regulatory function, and technical parameter is material SUS440C, table top ruler
Very little is 100*100mm, and stroke ± 12.5mm, this body weight 2.6kg, slide unit surface is handled using electroless nickel plating；
The tilt adjustment platform is ball-type sloping platform, and preferably Punch Industry (Dalian) Co., Ltd. produces, type
Number TST125 is bolted between the horizontal adjustment platform and tilt adjustment platform, is had the function of adjusting and is gone up angle of declination,
Its technical parameter is that material is aluminium alloy, mesa dimensions 125*125mm, shift motion ± 2 °, this body weight 1kg, slide unit table
Face is handled using black anodizing.
Preferably, the rotating disk edge is provided with rotating disk rocking bar.
It is further preferred that placed to rotate pull down mechanism convenient for stopping, it can be solid in the upper bracket bottom of inverted L shape bracket
Surely it is provided with magnechuck B, i.e., fixes a top magnechuck B in inverted L shape bracket bottom edge corresponding position, is set in the rotating disk
It is equipped with rotating disk fixing piece, rotating disk fixing piece is metal material, and for being adsorbed on magnechuck B, magnechuck B is same
With switching function, be adjusted device and it is idle when, rotation pull down mechanism can be fixed by adsorbing rotating disk fixing piece
In upper end.
It is further preferred that the internal diameter of the steel bushing is greater than the outer diameter of rock stick, when rock stick one end is bonded with steel pipe for the first time,
The rock stick other end need to be inserted into steel bushing and be fixed, rock stick is carried by steel bushing and rotates into uniform cementing, the steel in steel pipe
The cushion with larger frictional force is provided in sleeve, the confficient of static friction between cushion and rock stick preferably >=0.6, guarantees rock stick
With steel bushing close-coupled, i.e. guarantee rock stick does not fall out and can bear the torque of certain numerical value, and torsion is in 20-30N or so
Preferably, it not only can guarantee that steel bushing drove the rotation of rock stick at this time, but also be conducive to rock stick and extracted out of steel bushing；
The cushion is preferably rubber pad.
Behind rock stick one end and steel pipe bonding, it is single-ended bonding sample, closes magnechuck A magnetic force, is promoted and rotate lower machine drawing
Structure removes single-ended bonding sample from steel bushing, can this kind of single-ended bonding examination of prefabricated a batch in advance to accelerate sample preparation speed
Then sample is again removed steel bushing, with a magnechuck C is fixed at original steel bushing position, i.e., with bolt by magnechuck C
It is fixed on the second connector, then the inversion of single-ended bonding sample is come to be adsorbed on magnechuck C, adjust the horizontal of lower section and adjust
Platform, tilt adjustment platform are saved, again the steel pipe at centering both ends, finally repeats rotation drop-down movement, the rock stick other end is cementing
In steel pipe, sample preparation is completed.
It is further preferred that another way can also be used, i.e. the internal diameter of steel bushing is sufficiently large, greater than plastics buckle closure
The rubber pneumatic bag of annular, the rubber gas can be arranged in outer diameter, preferably 1.3-1.4 times of plastics buckle closure outer diameter in steel bushing
Capsule is connected with air charging system, changes steel bushing internal diameter by way of inflation/deflation, and internal diameter hour can fix rock stick, can when internal diameter is big
It is inverted the single-ended bonding sample (plastics buckle closure and steel pipe) to come, i.e., plastics buckle closure and steel pipe should be with the steel bushings after variable diameter at this time
Cylinder coupling, it is ensured that do not fall out and can bear the torque of certain numerical value.
On the other hand, the present invention is provided a kind of stretched using the preparation of above-mentioned rocks in direct tension sample quick preparation device and tried
The method of sample, comprising the following steps:
(1) core-drilling finishes core, and it is spare to prepare diagenesis stick；
(2) according to the diameter of rock stick, selected steel bushing, plastics buckle closure, steel pipe, steel bushing and the rubber pad to match；
(3) steel bushing is placed in the center of horizontal adjustment platform, is adsorbed and is fixed by magnechuck A, and by plastics
Buckle closure, steel pipe are placed sequentially on steel bushing；
(4) steel bushing is bolted on the second connector；
(5) entire rotation pull down mechanism is adsorbed on magnechuck B, then rock stick one end is inserted into steel bushing and is passed through
Rubber pad is fixed；
(6) pull handle drop-down rotation pull down mechanism under manually passing through, and makes the other end of rock stick close to steel pipe, by adjusting water
Heibei provincial opera section platform adjusts the front and rear, left and right position of steel pipe, and the inclination angle of steel pipe is adjusted by adjusting tilt adjustment platform, guarantees rock stick
Central axes are overlapped with steel pipe center line, if required precision is higher, can be installed laser alignment instrument in steel bushing and be adjusted in inclination in bottom
Level meter is installed on section platform, is precisely controlled；
(7) appropriate cementing agent is injected in steel pipe, injection rate is the volume that steel tube inner hole volume subtracts rock stick in steel pipe, glue
Tying agent is preferably mining anchoring agent or other resinae liquid glues, and then holds down and pulls handle on the other hand, on the other hand rotation rotation
Disk rocking bar, pulls down while rotating, when rock stick, which enters, contacts plastic button lid in steel pipe, waits 8~10s, rock sticklac knot exists
In steel pipe, magnechuck A is closed, single-ended bonding sample is removed；
(8) new plastics buckle closure, steel pipe are placed, the single-ended bonding sample of step (7) preparation a batch is repeated；
(9) steel bushing is removed, changes another magnechuck C into, and be bolted on the second connector, by single-ended bonding
Sample inverted comes, and steel pipe is adsorbed on magnechuck C, and new plastics buckle closure, steel pipe are placed on steel bushing, repeats step
(7), the other end of rock stick is cementing in steel pipe, both-end bonding sample, as the rocks in direct tension sample of the application is made.
In another aspect, being stretched the present invention also provides a kind of using the preparation of above-mentioned rocks in direct tension sample quick preparation device
The method of sample, comprising the following steps:
A, core-drilling finishes core, and it is spare to prepare diagenesis stick；
B, according to the diameter of rock stick, selected steel bushing, plastics buckle closure, steel pipe, steel bushing and the rubber pneumatic bag to match；
C, steel bushing is placed in the center of horizontal adjustment platform, is adsorbed and is fixed by magnechuck A, and by plastic button
Lid, steel pipe are placed sequentially on steel bushing；
D, steel bushing is bolted on the second connector；
E, entire rotation pull down mechanism is adsorbed on magnechuck B, then rock stick one end is inserted into steel bushing, is passed through
It ventilates into rubber pneumatic bag and fixes steel bushing；
F, pull handle drop-down rotation pull down mechanism under manually passing through, and makes the other end of rock stick close to steel pipe, by adjusting water
Heibei provincial opera section platform adjusts the front and rear, left and right position of steel pipe, and the inclination angle of steel pipe is adjusted by adjusting tilt adjustment platform, guarantees rock stick
Central axes are overlapped with steel pipe center line, if required precision is higher, can be installed laser alignment instrument in steel bushing and be adjusted in inclination in bottom
Level meter is installed on section platform, is precisely controlled；
G, appropriate cementing agent is injected in steel pipe, injection rate is the volume that steel tube inner hole volume subtracts rock stick in steel pipe, glue
Tying agent is preferably mining anchoring agent or other resinae liquid glues, is advisable within glue setting time 8-10 seconds, and then one is held
It stays and pulls handle, rotate rotating disk rocking bar on the other hand, pull down while rotating, when rock stick enters contact plastic button lid in steel pipe
When, 8~10s is waited, rock sticklac knot closes magnechuck A, remove single-ended bonding sample in steel pipe；
H, new plastics buckle closure, steel pipe are placed, the single-ended bonding sample of step G preparation a batch is repeated；
If it is sufficiently large I, to select steel bushing internal diameter, inflation can be utilized and deflated in the rubber pneumatic bag of internal stationary annular
Form changes steel bushing internal diameter, and internal diameter hour can fix rock stick, when internal diameter becomes larger, can fix the single-ended bonding examination for being inverted
Sample, specifically: the inversion of single-ended bonding sample is come, the gas of rubber pneumatic bag is bled off, plastics buckle closure and steel pipe are inserted into steel bushing
In cylinders, plastics buckle closure and steel pipe are fixed by ventilating into rubber pneumatic bag, new plastics buckle closure, steel pipe are placed on steel bushing,
Step G is repeated, the other end of rock stick is cementing in steel pipe, both-end bonding sample is made, the rock of as the application is directly drawn
Stretch sample.
After above-mentioned step (9) and step I, prepares and completed rocks in direct tension sample, it next can be by following
Step continues tension test:
(10) rocks in direct tension sample is marked, the preparation of universal testing machine is carried out according to the prior art；
Two rock sticks are stretched pressure-bearing changeover mechanism uses universal testing machine Wedge gripping to clamp respectively, is guarantee test machine
For axial tension by the center line of sample, the rock stick, which stretches pressure-bearing changeover mechanism, should have universal joint, and can pass through locking screw
Mother makes the rock stick stretch pressure-bearing changeover mechanism and the close contact of universal testing machine Wedge gripping；
(11) testing machine moving beam height is adjusted, to place the rocks in direct tension sample using present apparatus preparation, rock
Stick, which stretches, to be equipped with convenient for placing the recessed groove of rocks in direct tension sample on the inside of pressure-bearing changeover mechanism, outside recessed groove internal diameter and steel pipe
Diameter coupling；
(12) test parameters is set, the tension test of rock stick is carried out, handles test data, obtains the rocks in direct tension examination
The axial stress-strain curve of sample, calculates the tensile strength of rock.
In the present invention, magnechuck A, magnechuck B and magnechuck C are preferably all rectangular magnechuck, rectangular electromagnetism
Sucker can be standard type magnet base, such as: Punch Industry's production, model MBSD125, technical parameter
For material is aluminium alloy, and mesa dimensions 125*125*20mm, adsorption capacity 980N, this body weight 2.8kg, slide unit surface is adopted
With the available switch control of black anodizing processing, knob is allocated to the side " ON " and is magnetic, and it is nonmagnetic to be allocated to the side " OF ", to put
Set and replace various sizes of steel bushing.
It is worth noting that, the both ends of the rocks in direct tension sample of the application be it is cementing, in general, rock tension
Intensity is lower, to be lower than cementing strength, so rocks in direct tension sample can be pulled off in centre when carrying out tension test.
It is existing skill using the technology that universal testing machine carries out tension test to rocks in direct tension sample in the present invention
Art, not detailed place, reference can be made to the prior art.
The invention has the benefit that
1) rocks in direct tension sample quick preparation device of the invention, it is compact-sized, it is easy to operate, pass through multi-platform tune
Section and control, using rotation pull-down pattern can quick Fabrication go out the higher rocks in direct tension sample of precision, can effectively avoid glue
Knot is uneven, rock stick and steel pipe be difficult to the problems in, and can prepare in batches, preparation efficiency height.
2) the rocks in direct tension sample that rocks in direct tension sample quick preparation device of the invention is prepared, by 1
Rock stick, 2 steel pipes and 2 plastics buckle closure compositions, rock stick can be obtained by core drilling rig, and steel pipe can be by cutting long seamless section steel
Pipe obtains, and plastics buckle closure on the market more sale, rocks in direct tension sample pole that is cheap, therefore preparing by this method
Have economic benefit, the detection application of uniaxial direct tensile method survey Tensile Strength of Rock will be greatly promoted.
3) rocks in direct tension sample prepared by the present invention can be used more universal universal testing machine and carry out rock tension
Strength test, test method is simple, and single testing cost is lower, provides convenience to the maximum extent for teaching and scientific research.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of rocks in direct tension sample quick preparation device of the invention；
Fig. 2 is a kind of front view of structure of rocks in direct tension sample quick preparation device of the invention；
Fig. 3 is a kind of side view of structure of rocks in direct tension sample quick preparation device of the invention；
Fig. 4 is the structural schematic diagram of rocks in direct tension sample of the invention；
Fig. 5 is the structural schematic diagram of plastics buckle closure；
Fig. 6 is a kind of structural schematic diagram of horizontal adjustment platform of the invention；
Fig. 7 is a kind of structural schematic diagram of tilt adjustment platform of the invention；
Fig. 8 is a kind of structural schematic diagram of magnechuck A of the invention, magnechuck B or magnechuck C；
Fig. 9 is the structural schematic diagram of the first connector of the invention；
Figure 10 is the structural schematic diagram of bearing block and bearing of the invention；
Matching relationship schematic diagram of the Figure 11 between bearing and gear reduction unit；
Figure 12 is the structural schematic diagram that rock stick stretches pressure-bearing changeover mechanism；
Figure 13 is the mounting structure schematic diagram of rocks in direct tension sample；
Figure 14 is the test schematic diagram of rocks in direct tension sample；
Figure 15 is the stress strain diagram of one of rocks in direct tension sample；
Figure 16 is that one of rocks in direct tension sample destroys situation schematic diagram one；
Figure 17 is that one of rocks in direct tension sample destroys situation schematic diagram two；
In figure, 1- pedestal, 2- inverted L shape bracket, 3- sliding rail, 4- sliding block, 5- horizontal adjustment platform, 6- tilt adjustment platform,
7- magnechuck A, 8- steel bushing, 9- plastics buckle closure, 10- steel pipe, 11- rock stick, 12- steel bushing, the second connector of 13-, 14- first
Connector, 15- bearing block, 16- bearing, 17- shaft, 18- rotating disk, 19- rotating disk fixing piece, the rotation of 20- horizontal adjustment platform
Button, 21- tilt adjustment platform knob, 22- magnechuck switch, and pull handle under 23-, 24- rotating disk rocking bar, 25- magnechuck
B, 100- rock stick stretch pressure-bearing changeover mechanism, 101- locking nut, 102- universal joint, 200- universal testing machine, the omnipotent examination of 201-
Test machine Wedge gripping, 202- moving beam, 300- gear reduction unit.
Specific embodiment:
To keep the technical problem to be solved in the present invention, technical solution and advantage clearer, below in conjunction with attached drawing and tool
Body embodiment is described in detail, but is not limited only to this, what the present invention did not elaborated, presses this field routine techniques.
Embodiment 1:
A kind of rocks in direct tension sample quick preparation device, as shown in Fig. 1~10, including pedestal 1 and inverted L shape bracket 2,
Pedestal 1 and inverted L shape bracket 2 form basic framework, and basic framework inboard, upright is provided with sliding rail 3, is provided on sliding rail 3 and its phase
The sliding block 4 of cooperation is connected with rotation pull down mechanism by the first connector 14 on sliding block 4, is provided with below rotation pull down mechanism
Steel bushing 12 can be rotated into rock stick 11 in the steel pipe 10 for being inoculated with appropriate cementing agent by the rotation pull down mechanism, steel pipe 10
The other end is blocked with plastics buckle closure 9 to prevent glue from flowing out；
Horizontal adjustment platform 5, tilt adjustment platform 6 and magnechuck A 7, magnechuck A7 are sequentially installed on pedestal 1
One steel bushing 8 of upper absorption, steel bushing 8 is for placing rocks in direct tension sample, as shown in figure 4, rocks in direct tension sample includes rock
The examination of stick 11, the steel pipe 10 for being set in 11 both ends of rock stick and the plastics buckle closure 9 for being located at 10 both ends of steel pipe, i.e. rocks in direct tension
Sample includes 1 rock stick, 2 steel pipes and 2 plastics buckle closures, between rock stick 11 and steel pipe 10 and rock stick 11 and plastics buckle closure 9 it
Between be bonded together by cementing agent, rock stick 11 herein preferably uses high-precision core drilling rig to be made, and is bonded in steel pipe 10
Part be cementing clamping end, intermediate free segment be test portion.
Embodiment 2:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 1, the difference is that under rotation
Drawing mechanism include bearing block 15, bearing 16, shaft 17 and under pull handle 23, as shown in Fig. 9~10, bearing block 15 connects by first
It connects 14 to connect with sliding block 4 and sliding block 4 can be followed to move up and down along sliding rail 3, specifically, the first connector 14 includes one perpendicular
To connecting plate and horizontal connecting plate, vertical connecting plate is fixed by bolts in 4 side of sliding block, bolt fixing axle on horizontal connecting plate
Seat 15 is held, through-hole is provided in the middle part of horizontal connecting plate, bearing 16 is installed on bearing block 15, shaft 17 passes through in through-hole and bearing 16
Circle is fixedly connected；
Shaft 17 is fixedly arranged above rotating disk 18, and the second connector 13 is provided with below shaft 17, and the second connector 13 is logical
It crosses and is bolted steel bushing 12；
Under pull handle and 23 be set to bearing block two sides, for manually moving up and down.
The structure of second connector 14 is as shown in figure 9, the structure of bearing block 15 and bearing 16 is as shown in Figure 10, in this implementation
In example, the rotation needs of shaft 17 are manually controlled, in a further embodiment, such as shown in figure 11 can using automation control
Gear reduction unit 300 is added on bearing block 15, Electronic control shaft 17 rotates.
Embodiment 3:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 1, the difference is that steel bushing 8 rises
To the effect for placing plastics buckle closure 9 and 10 assembly of steel pipe, wherein the shape of steel bushing 8 and plastics buckle closure 9 is substantially similar, and shape is such as
Fig. 4, shown in 5, steel bushing 10 need not be too high, and 10 internal diameter of steel bushing is matched with 9 outer diameter of plastics buckle closure, the internal diameter of plastics buckle closure 9
It is matched with 10 outer diameter of steel pipe；When due to prefabricated rocks in direct tension sample, appropriate amount of fluid can be previously implanted in steel pipe 10
Cementing agent, it is necessary to lower end be blocked using plastics buckle closure 9, blocked it is intended that being bonded in rock stick 11 using plastics buckle closure 9
Steel pipe 10 in, economic cost can be saved, because steel pipe 10 can be cut by standard steel pipe (fashioned iron product), then covered with price
Cheap plastics buckle closure 9, steel bushing of the cost far below finishing.
In the present embodiment, the diameter D1 of rock stick 11 is 30mm, and cementing thickness d is 2mm, then the internal diameter of steel pipe 10 is that D2 is
32mm, outer diameter D 3 are 40mm, and preferably by the control of the pipe thickness of steel pipe 10 in 3-6mm or so, thickness is according to the diameter of rock stick 11
And depending on lithology, plastics buckle closure 9 is made of soft plastics, thickness about 0.5-1mm or so, 10 outer diameter D 3 one of internal diameter and thick steel pipe
It causes, plastics buckle closure 9 should not be thicker, otherwise will substantially reduce the adsorption capacity of 7 pairs of rectangular powerful electromagnetic sucker thick steel pipes 10.
Embodiment 4:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 1, the difference is that pedestal 1
Material is aluminium alloy, and multiple rows of fixing groove for being used to fix horizontal adjustment platform is provided on pedestal 1, and fixing groove is groove, knot
Threaded hole in structure size and horizontal adjustment platform 5 cooperates, and square nut is placed in groove, to utilize bolt by Level tune
Platform 5 is fastened on pedestal 1, and tilt adjustment platform 6 is connected by screw bolts with horizontal adjustment platform 5, magnechuck A 7 and inclination
Platform 6 is adjusted also to be connected by screw bolts；
Horizontal adjustment platform 5 is straight-line ball type XY axis slide unit, and preferably Punch Industry (Dalian) Co., Ltd. produces, type
Number XYMD100 has left and right, front and back regulatory function, and technical parameter is material SUS440C, mesa dimensions 100*
100mm, stroke ± 12.5mm, this body weight 2.6kg, slide unit surface is handled using electroless nickel plating, as shown in fig. 6, before it
Respectively there are a horizontal adjustment platform knob 20 in face and side；
Tilt adjustment platform 6 is ball-type sloping platform, and preferably Punch Industry (Dalian) Co., Ltd. produces, model
TST125 is bolted between horizontal adjustment platform 5 and tilt adjustment platform 6, has the function of adjusting upper angle of declination, skill
Art parameter is that material is aluminium alloy, and mesa dimensions 125*125mm, shift motion ± 2 °, this body weight 1kg, slide unit surface is adopted
It is handled with black anodizing, corresponding tilt adjustment platform in horizontal adjustment platform 5, as shown in fig. 7, two are diagonally respectively provided with one
Tilt adjustment platform knob 21 has the function of adjusting upper angle of declination.
Embodiment 5:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 2, the difference is that rotating disk
18 edges are provided with rotating disk rocking bar 24.
Embodiment 6:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 5, the difference is that in order to revolve
Turn pull down mechanism to place convenient for stopping, magnechuck B 25 can be fixedly installed in the upper bracket bottom of inverted L shape bracket 2, that is, existed
A top magnechuck B is fixed in 2 bottom edge corresponding position of inverted L shape bracket, is provided with rotating disk fixing piece 19 in rotating disk 18, rotation
Disk fixing piece 19 is metal material and end face is a flat surface thereon, for being adsorbed on magnechuck B 25, magnechuck B
25 equally have switching function, be adjusted device and it is idle when, can by adsorb rotating disk fixing piece 19, will rotation drop-down
Mechanism is fixed on upper end.
Embodiment 7:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 6, the difference is that such as Fig. 5 institute
Show, the internal diameter of steel bushing 12 is greater than the outer diameter of rock stick 11 need to be another by rock stick 11 when 11 one end of rock stick is bonded with steel pipe 10 for the first time
It is fixed in end insertion steel bushing 12, by steel bushing 12 carry rock stick 11 rotate into it is uniformly cementing in steel pipe 10, in steel bushing 12
It is provided with the cushion with larger frictional force, the confficient of static friction between cushion and rock stick preferably >=0.6, guarantees rock stick 11 and steel
12 close-coupled of sleeve, i.e. guarantee rock stick 11 do not fall out and can bear the torque of certain numerical value, and torsion is in 20-30N or so
Preferably, it not only can guarantee that steel bushing 12 drove rock stick 11 to rotate at this time, but also be conducive to rock stick 11 and extracted out of steel bushing 12；
Cushion is rubber pad.
After 11 one end of rock stick and steel pipe 10 bond, it is single-ended bonding sample, closes 7 magnetic force of magnechuck A, promote rotation
Pull down mechanism removes single-ended bonding sample from steel bushing 12, for accelerate sample preparation speed, can in advance prefabricated a batch it is this kind of single-ended
Then bonding sample is again removed steel bushing 12, (do not shown in figure at original 12 position of steel bushing with fixing a magnechuck C
Out), i.e., magnechuck C is fixed on the second connector 13 with bolt, then comes the inversion of single-ended bonding sample to be adsorbed on electricity
On magnetic-disc C, horizontal adjustment platform 5, the tilt adjustment platform 6 of lower section are adjusted, the steel pipe 10 at centering both ends, finally repeats again
Drop-down movement is rotated, 11 other end of rock stick is cementing in steel pipe 10, complete sample preparation.
Embodiment 8:
A kind of rocks in direct tension sample quick preparation device, structure is as described in Example 6, the difference is that can adopt
In another way, i.e. the internal diameter of steel bushing 12 is sufficiently large, is 1.3-1.4 times of 9 outer diameter of plastics buckle closure, sets in steel bushing 12
The rubber pneumatic bag (not shown) of annular is set, rubber pneumatic bag is connected with air charging system, changes by way of the inflation/deflation of air charging system
Become 12 internal diameter of steel bushing, internal diameter hour can fix rock stick 11, the single-ended bonding sample (plastic button that can be inverted when internal diameter is big
Lid 9 and steel pipe 10), i.e., plastics buckle closure 9 and steel pipe 10 should be coupled with the steel bushing 12 after variable diameter at this time, it is ensured that not fall out simultaneously energy
Bear the torque of certain numerical value.
Embodiment 9:
A method of tensile sample is prepared using rocks in direct tension sample quick preparation device, comprising the following steps:
(1) core-drilling finishes core, and it is spare to prepare diagenesis stick 11；
(2) according to the diameter of rock stick 11, selected steel bushing 8, plastics buckle closure 9, steel pipe 10, steel bushing 12 and the rubber to match
Pad；
(3) steel bushing 8 is placed in the center of horizontal adjustment platform 5, is adsorbed and is fixed by magnechuck A 7, and will
Plastics buckle closure 9, steel pipe 10 are placed sequentially on steel bushing 8；
(4) steel bushing 12 is bolted on the second connector 13；
(5) entire rotation pull down mechanism is adsorbed on magnechuck B 25, steel bushing is then inserted into 11 one end of rock stick
It is fixed in 12 by rubber pad；
(6) pull handle 23 drop-downs rotation pull down mechanism under manually passing through, and makes the other end of rock stick 11 close to steel pipe 10, passes through
The front and rear, left and right position that horizontal adjustment platform 5 adjusts steel pipe is adjusted, the inclination angle of steel pipe is adjusted by adjusting tilt adjustment platform 6,
Guarantee that 11 central axes of rock stick are overlapped with steel pipe center line, if required precision is higher, bottom can be installed by laser alignment in steel bushing 12
Instrument and level meter is installed on tilt adjustment platform 6, is precisely controlled；
(7) appropriate cementing agent is injected in steel pipe 10, injection rate is that 10 internal pore volume of steel pipe subtracts rock stick 11 in steel pipe
Volume, cementing agent are mining anchoring agent, are advisable within glue setting time 8-10 seconds, and then hold down on the other hand and pull handle 23, on the other hand
Rotating disk rocking bar 24 is rotated, is pulled down while rotating, when rock stick 11, which enters, contacts plastic button lid in steel pipe 10, waiting 8~
10s, rock stick 11 is cementing in steel pipe 10, if Fig. 8 closes magnechuck A by magnechuck switch 22, removes single-ended bonding examination
Sample；
(8) new plastics buckle closure 9, steel pipe 10 are placed, the single-ended bonding sample of step (7) preparation a batch is repeated；
(9) steel bushing 12 is removed, changes another magnechuck C into, and be bolted on the second connector 13, second connects
Fitting 13 is disc structure, and steel bushing 12 can both be bolted, magnechuck C can also be bolted, will be single-ended viscous
Knot sample inverted comes, and steel pipe 10 is adsorbed on magnechuck C, new plastics buckle closure 9, steel pipe 10 are placed on steel bushing 8, weight
Multiple step (7), the other end of rock stick is cementing in steel pipe 10, both-end bonding sample is made, the rock of as the application is direct
Tensile sample.
Embodiment 10:
A method of tensile sample is prepared using rocks in direct tension sample quick preparation device, comprising the following steps:
A, core-drilling finishes core, and it is spare to prepare diagenesis stick 11；
B, according to the diameter of rock stick 11, selected steel bushing 8, plastics buckle closure 9, steel pipe 10, steel bushing 12 and the rubber to match
Air bag；
C, steel bushing 8 is placed in the center of horizontal adjustment platform, is adsorbed and is fixed by magnechuck A 7, and will modeling
Material buckle closure 9, steel pipe 10 are placed sequentially on steel bushing 8；
D, steel bushing 12 is bolted on the second connector 13；
E, entire rotation pull down mechanism is adsorbed on magnechuck B 25, steel bushing 12 is then inserted into 11 one end of rock stick
It is interior, it is by ventilating into rubber pneumatic bag that steel bushing 12 is fixed；
F, pull handle 23 drop-downs rotation pull down mechanism under manually passing through, and makes the other end of rock stick 11 close to steel pipe 10, passes through
The front and rear, left and right position that horizontal adjustment platform 5 adjusts steel pipe is adjusted, adjusts inclining for steel pipe 10 by adjusting tilt adjustment platform 6
Angle guarantees that 11 central axes of rock stick are overlapped with 10 center line of steel pipe, if required precision is higher, can install laser in bottom in steel bushing 12
Centering instrument and level meter is installed on tilt adjustment platform 6, is precisely controlled；
G, appropriate cementing agent is injected in steel pipe 10, injection rate is the body that 10 internal pore volume of steel pipe subtracts rock stick 11 in steel pipe
Product, cementing agent is mining anchoring agent, is advisable within glue setting time 8-10 second, and then holds down on the other hand and pulls handle 23, on the other hand turn
Dynamic rotating disk rocking bar 24, pulls down while rotating, when rock stick 11, which enters, contacts plastic button lid 9 in steel pipe 10, waiting 8~
10s, rock stick 11 is cementing in steel pipe 10, closes magnechuck A 7, removes single-ended bonding sample；
H, new plastics buckle closure 9, steel pipe 10 are placed, the single-ended bonding sample of step G preparation a batch is repeated；
If it is sufficiently large I, to select 12 internal diameter of steel bushing, in the rubber pneumatic bag of internal stationary annular, inflated using air charging system
And the form deflated changes 12 internal diameter of steel bushing, internal diameter hour can fix rock stick 11, when internal diameter becomes larger, can fix inversion and come
Single-ended bonding sample, specifically: by single-ended bonding sample inversion come, the gas of rubber pneumatic bag is bled off, by 9 He of plastics buckle closure
Steel pipe 10 is inserted into steel bushing 12, by ventilating into rubber pneumatic bag that plastics buckle closure 9 and steel pipe 10 is fixed, is put on steel bushing 8
New plastics buckle closure 9, steel pipe 10 are set, step G is repeated, the other end of rock stick 11 is cementing in steel pipe 10, both-end bonding is made
Sample, as the rocks in direct tension sample of the application.
After above-mentioned step (9) and step I, prepares and completed rocks in direct tension sample, it next can be by following
Step continues tension test:
(10) rocks in direct tension sample is marked, the beam worker of universal testing machine 200 is carried out according to the prior art
Make, as shown in Figure 12~14；
Two rock sticks are stretched pressure-bearing changeover mechanism 100 to be clamped with universal testing machine Wedge gripping 201 respectively, to guarantee examination
The axial tension of machine is tested by the center line of sample, rock stick, which stretches pressure-bearing changeover mechanism 100, should have universal joint 102, and can lead to
Crossing locking nut 101 makes rock stick stretch pressure-bearing changeover mechanism 100 and the close contact of universal testing machine Wedge gripping 201；
(11) 202 height of testing machine moving beam is adjusted, to place the rocks in direct tension sample using present apparatus preparation,
Rock stick stretch pressure-bearing changeover mechanism 100 on the inside of be equipped with convenient for place rocks in direct tension sample recessed groove, recessed groove internal diameter with
Outer diameter of steel pipes coupling；
(12) test parameters is set, the tension test of rock stick is carried out, handles test data, obtains rocks in direct tension sample
Axial stress-strain curve is the stress strain diagram of one of rocks in direct tension sample, calculates rock as shown in figure 15
Tensile strength, Figure 16,17 for one of rocks in direct tension sample destroy situation schematic diagram.
In the present invention, magnechuck A 7, magnechuck B 25 and magnechuck C are rectangular magnechuck, such as Fig. 8 institute
Showing, rectangular magnechuck can be standard type magnet base, such as: Punch Industry's production, model MBSD125,
Its technical parameter is, material is aluminium alloy, mesa dimensions 125*125*20mm, adsorption capacity 980N, this body weight 2.8kg,
Slide unit surface is handled using black anodizing, and available magnechuck switch 22 controls, and magnechuck switch 22 is piece-picking type
Switch, is located at one jiao of magnechuck, and knob is allocated to the side " ON " and is magnetic, and is allocated to that the side " OF " is nonmagnetic, and upper surface is adsorbable
And the various sizes of steel bushing 8 of replacement.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, without departing from the principles of the present invention, it can also make several improvements and retouch, these improvements and modifications
It should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of rocks in direct tension sample quick preparation device, which is characterized in that including pedestal and inverted L shape bracket, the base
Seat and inverted L shape bracket form basic framework, and basic framework inboard, upright is provided with sliding rail, is provided on the sliding rail and matches with it
The sliding block of conjunction is connected with rotation pull down mechanism, setting below the rotation pull down mechanism by the first connector on the sliding block
There is steel bushing；
Horizontal adjustment platform is sequentially installed on the pedestal, on tilt adjustment platform and magnechuck A, the magnechuck A
A steel bushing is adsorbed, for placing rocks in direct tension sample, the rocks in direct tension sample includes rock stick, is arranged the steel bushing
Rock stick both ends steel pipe and be located at the plastics buckle closure at steel pipe both ends, between the rock stick and steel pipe and rock stick and modeling
It is bonded together by cementing agent between material buckle closure.
2. rocks in direct tension sample quick preparation device according to claim 1, which is characterized in that the rotation drop-down
Mechanism include bearing block, bearing, shaft and under pull handle, the bearing block is connect with sliding block by the first connector and can be with
It moves up and down with sliding block along sliding rail, first connector includes a vertical connecting plate and horizontal connecting plate, described vertically to connect
Fishplate bar is fixed on sliding block side, and bearing seat is fixedly connected on horizontal connecting plate, is provided with through-hole, bearing block in the middle part of horizontal connecting plate
Upper installation bearing, shaft pass through through-hole and are fixedly connected with bearing inner race；
The shaft is fixedly arranged above rotating disk, is provided with the second connector below the shaft, second connector passes through
It is bolted steel bushing；
It pulls handle under described and is set to bearing block two sides, conveniently move up and down.
3. rocks in direct tension sample quick preparation device according to claim 1, which is characterized in that the steel bushing internal diameter
It is matched with plastics buckle closure outer diameter, the internal diameter of plastics buckle closure is matched with outer diameter of steel pipes size；
The plastics buckle closure with a thickness of 0.5-1mm.
4. rocks in direct tension sample quick preparation device according to claim 1, which is characterized in that set on the pedestal
It is equipped with multiple rows of for fixing the fixing groove of horizontal adjustment platform；
Preferably, the horizontal adjustment platform is straight-line ball type XY axis slide unit, and the tilt adjustment platform is ball-type inclination
Platform is bolted between the horizontal adjustment platform and tilt adjustment platform.
5. rocks in direct tension sample quick preparation device according to claim 2, which is characterized in that the rotating disk side
Rotating disk rocking bar is provided at edge.
6. rocks in direct tension sample quick preparation device according to claim 5, which is characterized in that the inverted L shape branch
The upper bracket bottom of frame is fixedly installed magnechuck B, and rotating disk fixing piece, rotating disk fixing piece are provided in the rotating disk
For metal material, for being adsorbed on magnechuck B.
7. rocks in direct tension sample quick preparation device according to claim 6, which is characterized in that the steel bushing
Internal diameter is greater than the outer diameter of rock stick, is provided with cushion, confficient of static friction >=0.6 between cushion and rock stick in the steel bushing；
The cushion is preferably rubber pad.
8. rocks in direct tension sample quick preparation device according to claim 6, which is characterized in that the steel bushing
Internal diameter is greater than plastics buckle closure outer diameter, preferably 1.3-1.4 times of plastics buckle closure outer diameter, and the rubber of annular is provided in the steel bushing
Glue air bag, the rubber pneumatic bag are connected with air charging system, change steel bushing internal diameter by inflation/deflation to fix rock stick or plastic button
Lid and steel pipe.
9. a kind of method for preparing tensile sample using rocks in direct tension sample quick preparation device as claimed in claim 7,
Characterized by comprising the following steps:
(1) core-drilling finishes core, and it is spare to prepare diagenesis stick；
(2) according to the diameter of rock stick, selected steel bushing, plastics buckle closure, steel pipe, steel bushing and the rubber pad to match；
(3) steel bushing is placed in the center of horizontal adjustment platform, by magnechuck A adsorb fix, and by plastics buckle closure,
Steel pipe is placed sequentially on steel bushing；
(4) steel bushing is bolted on the second connector；
(5) entire rotation pull down mechanism is adsorbed on magnechuck B, then rock stick one end is inserted into steel bushing and passes through rubber
Pad is fixed；
(6) pull handle drop-down rotation pull down mechanism under manually passing through, and makes the other end of rock stick close to steel pipe, by adjusting horizontal adjust
The front and rear, left and right position that platform adjusts steel pipe is saved, the inclination angle of steel pipe is adjusted by adjusting tilt adjustment platform, guarantees rock stick axis
Line is overlapped with steel pipe center line；
(7) appropriate cementing agent is injected in steel pipe, injection rate is the volume that steel tube inner hole volume subtracts rock stick in steel pipe, cementing agent
Preferably mining anchoring agent or other resinae liquid glues, and then hold down on the other hand and pull handle, and rotate rotating disk on the other hand and shake
Bar pulls down while rotating, when rock stick, which enters, contacts plastic button lid in steel pipe, waits 8~10s, rock sticklac knot is in steel pipe
It is interior, magnechuck A is closed, single-ended bonding sample is removed；
(8) new plastics buckle closure, steel pipe are placed, the single-ended bonding sample of step (7) preparation a batch is repeated；
(9) steel bushing is removed, changes another magnechuck C into, and be bolted on the second connector, by single-ended bonding sample
Inversion comes, and steel pipe is adsorbed on magnechuck C, and new plastics buckle closure, steel pipe are placed on steel bushing, repeats step (7), will
The other end of rock stick is cementing in steel pipe, and both-end bonding sample, as the rocks in direct tension sample of the application is made.
10. a kind of method for preparing tensile sample using rocks in direct tension sample quick preparation device according to any one of claims 8,
Characterized by comprising the following steps:
A, core-drilling finishes core, and it is spare to prepare diagenesis stick；
B, according to the diameter of rock stick, selected steel bushing, plastics buckle closure, steel pipe, steel bushing and the rubber pneumatic bag to match；
C, steel bushing is placed in the center of horizontal adjustment platform, by magnechuck A adsorb fix, and by plastics buckle closure,
Steel pipe is placed sequentially on steel bushing；
D, steel bushing is bolted on the second connector；
E, entire rotation pull down mechanism is adsorbed on magnechuck B, then rock stick one end is inserted into steel bushing, by rubber
Steel bushing is fixed in ventilation in glue air bag；
F, pull handle drop-down rotation pull down mechanism under manually passing through, and makes the other end of rock stick close to steel pipe, by adjusting horizontal adjust
The front and rear, left and right position that platform adjusts steel pipe is saved, the inclination angle of steel pipe is adjusted by adjusting tilt adjustment platform, guarantees rock stick axis
Line is overlapped with steel pipe center line；
G, appropriate cementing agent is injected in steel pipe, injection rate is the volume that steel tube inner hole volume subtracts rock stick in steel pipe, cementing agent
Preferably mining anchoring agent or other resinae liquid glues, and then hold down on the other hand and pull handle, and rotate rotating disk on the other hand and shake
Bar pulls down while rotating, when rock stick, which enters, contacts plastic button lid in steel pipe, waits 8~10s, rock sticklac knot is in steel pipe
It is interior, magnechuck A is closed, single-ended bonding sample is removed；
H, new plastics buckle closure, steel pipe are placed, the single-ended bonding sample of step G preparation a batch is repeated；
I, the inversion of single-ended bonding sample is come, bleeds off the gas of rubber pneumatic bag, plastics buckle closure and steel pipe are inserted into steel bushing,
Plastics buckle closure and steel pipe are fixed by ventilating into rubber pneumatic bag, new plastics buckle closure, steel pipe are placed on steel bushing, repeats to walk
Rapid G, the other end of rock stick is cementing in steel pipe, both-end bonding sample, as the rocks in direct tension sample of the application is made.
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| CN113125216A (en) * | 2020-01-15 | 2021-07-16 | 中国商用飞机有限责任公司 | Method for reinforcing end part of test piece |
| CN112857934A (en) * | 2021-01-22 | 2021-05-28 | 上海大学 | Preparation method of high-permeability homogeneous nonmagnetic core |
| CN113188906A (en) * | 2021-04-25 | 2021-07-30 | 重庆科技学院 | Rock uniaxial tension test device and method |
| CN113188906B (en) * | 2021-04-25 | 2022-05-20 | 重庆科技学院 | Rock uniaxial tension test device and method |
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