CN109238796A - A kind of three axis sample sample preparation devices of Bidirectional-pressure - Google Patents
A kind of three axis sample sample preparation devices of Bidirectional-pressure Download PDFInfo
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- CN109238796A CN109238796A CN201810809755.4A CN201810809755A CN109238796A CN 109238796 A CN109238796 A CN 109238796A CN 201810809755 A CN201810809755 A CN 201810809755A CN 109238796 A CN109238796 A CN 109238796A
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- 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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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Abstract
This application involves a kind of three axis sample sample preparation devices of Bidirectional-pressure, belong to the indoor geotechnics field of civil engineering subject.Including seven pressure mechanism, pressure conduction mechanism, top pressing mechanism, lower part pressing mechanism, sample preparation cylinder, upper supporting mechanism, lower support mechanism parts.The application being capable of three axis sample sample preparation pressure of intelligent control and time, to simulate practical soil consolidation process, and being capable of the multiple samples of one-pass molding, reduction sample preparation time and the disturbance to soil sample, and the difficult defect of conventional specimen cylinder sampling is overcome, there is certain engineering adaptability.
Description
Technical field
This application involves a kind of three axis sample sample preparation devices of Bidirectional-pressure, belong to the geotechnological skill in interior of civil engineering subject
Art field.
Background technique
With increasing for engineering is built on the soft soil foundation of coastal area, the test of weak soil mechanical property has become current building
Important content in engineering.Triaxial tests are the common experimental methods for measuring weak soil mechanical property, and sample is diameter 3.91cm
The cylinder of high 8.0cm, and need to make 3-5 standard sample during the experiment to test under 3-5 different confining pressures
Weak soil mechanical property.It generallys use and hits reality by hand, soil sample uniformly hit in fact to reach target soil sample compactness, and use hand
Work demoulding.Due to making sample one by one, efficiency is lower, is difficult the uniformity and consistency of accurate Control Assay, and takes off by hand
Mould is difficult to avoid that the disturbance to sample, to influence the mechanics properties testing of weak soil sample.
CN106568628A discloses a kind of soil sample sample preparation experimental facilities, is able to solve prior art preparation of soil sample sample
The problem of uniformity difference；CN106769312A discloses a kind of soil sample compactor, is pressed using unilateral side, and to taking native process to carry out
Optimization；CN106610353A discloses a kind of device that triaxial tests sample preparation is prepared using layer-compacting, according to lever original
Reason, using manual compaction in layers soil sample.Above several cases solve the problems, such as soil sample uniform in shaping, but there are still following three
The point technical issues that need to address: 1, it is unable to artificial intelligence foundation soil and consolidates true loading process for a long time；2, it can not achieve one
The secondary multiple samples of molding；3, have the defects that sample demoulding is difficult.
Based on this, the application is made.
Summary of the invention
For the drawbacks described above in the presence of existing sample making technology, this application provides a kind of three axis samples of Bidirectional-pressure
Sample preparation device, the device can not only three axis sample sample preparation pressure of intelligent control and time, to simulate practical soil consolidation process,
Can also the multiple samples of one-pass molding, reduce sample preparation time and the disturbance to soil sample, and it is difficult to overcome the sampling of conventional specimen cylinder
Defect, have good engineering adaptability.
To achieve the above object, the technical solution that the application takes is as follows:
A kind of three axis sample sample preparation devices of Bidirectional-pressure, including pressure mechanism, pressure conduction mechanism, top pressuring machine
Structure, lower part pressing mechanism and sample preparation cylinder and multiple pulleys, pressure mechanism, top pressing mechanism, sample preparation cylinder and lower part pressuring machine
Structure is sequentially arranged from top to bottom, and multiple pulleys are fixedly installed on above pressure mechanism, the pressure mechanism include overhead power part,
Lower power part, upper time controller, lower time controller, overhead power part are connected with lower power part by soft conduit
It connects, overhead power part bottom is equipped with upper time controller, and lower power part and upper time controller corresponding position are installed
There is lower time controller, upper time controller and lower time controller are connect with soft conduit two sides respectively, are adjusted soft
The flow of filler in matter conduit, to realize intelligent control pressure；
The pressure conduction mechanism includes top pressurization wirerope and lower part pressurization wirerope；
The top pressing mechanism includes cross tube and load pressure head on several, and pressurize steel wire for cross tube one end and top
Rope connection is swung with the movement of top pressurization wirerope, and top is pressurizeed after at least one pulley of wirerope pile warp, with lower power
Part connection loads pressure head in other end setting, and upper load pressure head is located at sample preparation cylinder top, and with cross tube swing and on move down
It is dynamic；Lower part pressing mechanism includes sheer pole and several lower load pressure heads, and sheer pole one end is connect with lower part pressurization wirerope, with
Lower part pressurization wirerope is mobile and swings, and lower part is pressurizeed after at least one pulley of wirerope pile warp, is connect with overhead power part, separately
One end setting is lower to load pressure head, and lower load pressure head is located at below sample preparation cylinder, and is correspondingly arranged with upper load pressure head；Pressurize steel on top
Cord, lower part pressurization wirerope according to pressure change change operating status, and then drive on load pressure head, it is lower load pressure head it is upper
The change of sample preparation time is realized in lower movement.
Further, as preferred:
Stopping snak link being provided on the top pressurization wirerope and connecting spring is buckled, and top pressurization wirerope passes through company
It connects snak link to be flexibly connected with cross tube, the fixation of position at setting height is realized by stopping snak link.It is furthermore preferred that described
Pulley is installed at the top of door shaped stent, and fixation holes, fixation holes and stopping snak link cooperation is arranged in door shaped stent side side,
Realize the control of setting height.At the end of experiment, stops snak link and buckle into fixation holes, realize positioning.
It is installed on upper support bar in the middle part of the cross tube by shaft, one end connects top pressurization wirerope, the other end
Upper limit device is installed by seaming chuck, is connected below upper limit device and loads pressure head on several；Pass through shaft in the middle part of sheer pole
It is installed on lower support bar, one end connects lower part pressurization wirerope, and the other end is equipped with lower retainer, lower limit by push-down head
Several lower load pressure heads of setting, upper support bar use lever principle to provide power for upper load pressure head above device, lower support bar
Lever principle is used to provide power for lower load pressure head.It is furthermore preferred that upper pressing spring is arranged below the push-down head.
The sample preparation cylinder is mounted on lower support mechanism, and lower support mechanism includes support panel and is set to support panel
On several accommodating holes, sample preparation cylinder is installed in accommodating hole.It is furthermore preferred that the sample preparation cylinder includes cylinder, buckle and lantern ring,
Cylinder is made of two panels, and lantern ring is set on two panels cylinder body outer wall at least provided with one, and buckle is located on the outside of cylinder, accommodating
It is provided with buckle hole on the outside of hole, buckles hole and is clasped, realizes that cylinder side is fixed；Lower support mechanism is fixed on ground
On face, door shaped stent and upper support bar and support panel consolidation, two cylinders are fixed on support by accommodating hole and buckle hole
On panel, lower support bar is consolidated in the position support center-left side 10cm；Upper pressing spring lower part and pedestal consolidate.
The overhead power part is a hollow funnel-like device, and material is preferably iron, volume 0.1m3, lower part is moved
Power part and overhead power part are of similar shape and substance.
Setting band crossbeam hole at overhead power part center, lower part pressurization wirerope pass through band crossbeam hole and top
Force piece connection, plays the role of pressure conduction.
Two elipse holes are arranged in lower power part edge, and two elipse holes are arranged symmetrically, and pressurize steel on top
Cord is connect by elipse hole with lower power part, and pressure conduction is played the role of.
Top pressing mechanism is connected by hook with top pressurization wirerope, uses lever principle to be upper by upper support bar
It loads pressure head and power is provided.
The top pressurization wirerope side of pressure conduction mechanism is that diameter is identical in pulley punishment, two strands of different steel of length
Cord, two strand steel wire rope tail portions are connected separately with hook, are connect by linking up with elipse hole；The top pressurization wirerope other side
It is connect by connecting spring button with cross tube, provides power for top pressing mechanism.
Connecting spring button is the identical stainless steel spring button of material size with snak link is stopped.Connecting spring button bit is in top
Pressurization wirerope tail portion, and connect with cross tube；Stop snak link being located at the connecting spring side of buckling 10cm, at the end of experiment
It will stop snak link connecting with fixation holes.
Cross tube total length is 60cm, and upper support bar length is 20cm, and upper support bar is arranged at the 10cm of cross tube end,
Supporting point as pressure amplification.
Upper load fall head 4cm is connected with cross tube in end, and is located at upper limit device center.
Upper limit device thickness 2cm, top and seaming chuck consolidate, for guaranteeing that sample preparation height, lower part consolidation add there are three upper
Carry pressure head, fall head 3cm, diameter 3.91cm, for suppressing sample downwards.
Sheer pole total length is 60cm, and the length of lower support bar is 15cm, is connected at the 10cm of sheer pole end with sheer pole
It connects, the supporting point as pressure amplification.
The height 6cm of push-down head, lower part and upper pressing spring consolidate, and top and lower retainer consolidate, and push-down head is located at lower limit
At the device center of position.
Lower retainer thickness 2cm, lower part and push-down head consolidate, and play the purpose for guaranteeing sample preparation height, lower retainer top
There are three lower load pressure heads for consolidation, and have a haircut height 3cm, diameter 3.91cm, for suppressing sample upwards.
The internal diameter of cylinder is 3.91cm, outer diameter 4.5cm, in fact it is highly preferred that is 14.0cm.Buckle is that cylinder rolls over shape, and diameter is excellent
It is selected as 0.5mm, a length of 1cm of horizontal direction, a length of 1.5cm of vertical direction, positioned at the side midpoints of the hollow sample preparation cylinder of semicircle
Place.The effect of buckle is to be fixed on cylinder on support panel, and lantern ring outside diameter 4.7cm, width 20mm, lantern ring is for solid
Determine latex film, is separately fixed in cylinder upper edge, lower section lantern ring is symmetrically fixed.
The height 1.3m of door shaped stent, width 1.3m are used to support pressure mechanism and pressure conduction mechanism.
Fixation holes high 2cm, wide 1.5cm when off-test, will stop snak link and fix apart from upper beam top 36cm
At fixation holes.
Pulley is located above door shaped stent, and the wirerope that can pressurize to top is supported and turns with lower part pressurization wirerope
To.
The length for supporting panel is 1.6m, width 1m, with a thickness of 2cm, for fixing door shaped stent and upper support bar.
The diameter of accommodating hole is 4.7cm, and buckle hole is 0.8cm apart from accommodating hole distance, and sample preparation makes sample preparation cylinder before starting
It is respectively aligned to accommodating hole and buckle hole with buckle, and makes sample preparation cylinder arranged orthogonal.
Pedestal is arranged in ground, as the support construction of lower part pressing mechanism and upper pressing spring, base dimensions and supporting surface
Plate is consistent, and lower support bar and upper pressing spring are consolidated on pedestal.
Upper pressing spring diameter 5cm, length is 15cm under unstressed state, and the length under by the effect of 1000kpa pressure is
5cm.When upper pressing spring compresses completely, 1mm in sample preparation cylinder is protruded at the top of lower load pressure head.It is solid with pedestal below upper pressing spring
Knot, top and push-down head consolidate.The downward pressure that upper pressing spring applies lower part pressing mechanism is converted into for push-down head
Upward thrust applies pressure to sample upwards.
The internal diameter of cylinder is mutually all 3.91cm, outer diameter 4.5cm with the diameter of standard sample, in fact it is highly preferred that is 14.0cm.
Buckle is located at cylinder center side, lantern ring outside diameter 4.7cm, width 20mm.
Cross tube total length is 60cm, and upper support bar length is 20cm, is connect at 10cm with cross tube on the left of the cross tube.
Seaming chuck height 4cm, is consolidated in cross tube end, positioned at the center of upper limit device upper surface.
Upper limit device thickness 2cm, there are three lower load pressure head, height 3cm, diameter 3.91cm for lower part consolidation.
Sheer pole total length is 60cm, and the length of lower support bar is 15cm, the place 10cm and sheer pole company on the left of sheer pole
It connects.
The lower retainer lower part thickness 2cm and push-down head consolidate, and the height 6cm of push-down head, lower retainer top is consolidated with three
The lower load pressure head of a height 3cm, diameter 3.91cm.
The height 1.3m of door shaped stent, width 1.3m.
Fixation holes are apart from crossbeam bottom end 36cm, length 2cm, width 1.5cm.
Support panel length is 1.6m, width 1m, with a thickness of 2cm.
The diameter of accommodating hole is 4.7cm, and buckle hole centre distance accommodating hole centre distance is 3.6cm.
Spring diameter 5cm, length is 15cm under unstressed state, is 5cm by the lower length of 1000kpa pressure effect.
The method that above-mentioned apparatus carries out sample sample preparation is as follows:
(1) prepare before experiment
According to stress history, sedimentary condition and the particle composition of experiment soil, required application in experimentation is determined
Time required for pressure size and experiment.
(2) instrument prepares
1. first determining whether the filling object amount in the force piece of pressure mechanism middle and upper part is sufficient, and gravity should make pressing spring pressure
It to Exact Design height, checks in lower power part whether there is filler, cross tube should be made to be in horizontal if non-filler
State.
2. special latex film is fixed on inner barrel, when placement, makes both sides be more than the latex film length of barrel lenght as far as possible
It is consistent, guarantees inner barrel and latex film contact position corrugationless and air, it is using lantern ring that two sides are extra after inspection
Latex film is fixed on cylinder.
3. sample preparation cylinder should be in accommodating hole, light to press on the right side of cross tube if sample preparation cylinder is not in the position, press load
Head is lifted up to appropriate location, and makes to snap into buckle hole.
4. the setting compacting time, upper time controller and lower time controller is arranged, by the stream for controlling filler
Amount control pressure size and sample preparation time.
(3) soil sample is placed
3 parts of soil sample of design weight are weighed, are respectively put into sample preparation cylinder.For applying appropriate pressure on the right side of cross tube when placement
Power makes to load pressure head and sample preparation cylinder isolates sufficient space and is put into sample soil sample.
(4) compacting is completed
When reaching the time of setting between when pressurized, upper time controller, which will control pressure mechanism, makes it stop continuing
Apply pressure to the sample soil body.Connection stops snak link and fixation holes, then connecting spring button is separated with cross tube, at this time on
Portion's pressing mechanism is in not by external force state.
(5) soil sample is taken out
Appropriate pressure is applied to cross tube side, separates seaming chuck with sample preparation cylinder, takes out sample preparation cylinder, and demoulded.
Lantern ring is first removed when demoulding, two cylinders are separated, that is, can be taken off the sample of latex film package, sample can directly supply lower step at this time
Test uses.
(6) tool reset
Upper time controller and lower time controller are adjusted, is then inverted the position of two-way pressure mechanism, under making
Portion's force piece is in top, connects all parts on pressure mechanism.Connecting spring button is connect with cross tube, stops snak link
It is separated with fixation holes, then next sample preparation can be carried out by (1)-(5) step.
The application's has the beneficial effect that
1. overcoming traditional unilateral sample preparation device using opposite pressurization cannot sufficiently be compacted the soil body and the defect of uniformity difference.
2. pressing time and pressure size can accurately be controlled, and it is capable of the loading process of accurate simulation underground soil.
3. can the multiple samples of one-pass molding, save the sample preparation time, and reduce sample preparation in batches generation sample preparation error.
Facilitate sample preparation cylinder to sample 4. being packed into latex film in sample preparation cylinder, reduce sample breakage rate, can be mentioned for test in next step
For convenient, to improve test efficiency.
Detailed description of the invention
Fig. 1 is status diagram when the application starts pressurization；
Fig. 2 is the structural schematic diagram of the application pressure mechanism；
Fig. 3 is the structural schematic diagram of the application pressure conduction mechanism；
Fig. 4 is the structural schematic diagram of the application sample preparation cylinder；
Fig. 5 is the structural schematic diagram of the application lower support mechanism.
Figure label: 1. pressure mechanisms, 11. overhead power parts, 12. lower power parts, 13. soft conduits, when 14. top
Between controller, 15. lower time controllers, 16. band crossbeam holes, 17. elipse holes；2. pressure conduction mechanism, 21. tops add
Compressed steel cord, pressurize wirerope for 22. lower parts, and 23. connecting spring buttons, 24. stop snak link；It is horizontal on 31. 3. top pressing mechanism
Bar, 32. upper support bars, 33. seaming chucks, 34. upper limit devices load pressure head on 35.；4. lower part pressing mechanism, 41. sheer poles,
42. lower support bar, 43. push-down heads, 44. lower retainers, 45. load down pressure heads, pressing spring on 46.；5. sample preparation cylinder, 51. buckles,
52. cylinder, 53. lantern rings；6. upper supporting mechanism, 61. door shaped stents, 62. fixation holes, 63. pulleys；7. lower support machine
Structure, 71. support panels, 72. accommodating holes, 73. buckle holes, 74. wirerope holes, 75. pedestals.
Specific embodiment
Three axis sample sample preparation devices of a kind of Bidirectional-pressure of the present embodiment, in conjunction with Fig. 1, including pressure mechanism 1, pressure conduction
Mechanism 2, top pressing mechanism 3, lower part pressing mechanism 4 and sample preparation cylinder 5 and multiple pulleys 63, pressure mechanism 1, top pressuring machine
Structure 2, sample preparation cylinder 5 and lower part pressing mechanism 4 are sequentially arranged from top to bottom, and multiple pulleys 63 are fixedly installed on 1 top of pressure mechanism,
In conjunction with Fig. 2, pressure mechanism 1 includes overhead power part 11, lower power part 12, upper time controller 14, lower time control
Device 15, overhead power part 11 are connect with lower power part 12 by soft conduit 13, and 11 bottom of overhead power part is equipped with top
Time controller 14, lower power part 12 and 14 corresponding position of upper time controller are equipped with lower time controller 15, on
Portion's time controller 14 and lower time controller 15 are connect with soft about 13 two sides of conduit respectively, are adjusted in soft conduit 13
The flow of filler, to realize intelligent control pressure；
In conjunction with Fig. 3, pressure conduction mechanism 2 includes top pressurization wirerope 21 and lower part pressurization wirerope 22；
In conjunction with Fig. 1, top pressuring machine, 3 include cross tube 31 and several upper load pressure heads 35,31 one end of cross tube with it is upper
Portion's wirerope 21 that pressurizes connects, mobile with top pressurization wirerope 21 and swing, top pressurize 21 pile warp of wirerope at least one
It after pulley 63, is connect with lower power part 12, loads pressure head 35 in other end setting, upper load pressure head 35 is located on sample preparation cylinder 5
Just, it and swings with cross tube 21 and is moved up and down with respect to sample preparation cylinder 5；Lower part pressing mechanism 4 includes under sheer pole 41 and several
Pressure head 45 is loaded, 41 one end of sheer pole is connect with lower part pressurization wirerope 22, it is swung with the movement of lower part pressurization wirerope 22, under
Portion pressurizes, and (pulley 63 with top pressurization 21 pile warps of wirerope is not preferably same for 22 pile warp of wirerope at least one pulley
It is a) after, it being connect with overhead power part 21, other end setting is lower to load pressure head 45, and lower load pressure head 45 is located at 5 lower section of sample preparation cylinder,
And it is correspondingly arranged with upper load pressure head 35；Wirerope 21, lower part pressurization wirerope 22 pressurize according to pressure change change fortune in top
Row state, so drive and load pressure head 35, lower load pressure head 45 moves up and down, that is, realize the change of sample preparation time.
To realize that more using effects, above scheme can also add as follows: in conjunction with Fig. 3, top pressurization
Be provided on wirerope 21 and stop snak link 24 and connecting spring and buckle 23, top pressurization wirerope 21 by connecting spring buckle 23 with
Cross tube 31 is flexibly connected, and the fixation of position at setting height is realized by stopping snak link 24.It is furthermore preferred that pulley 63 is installed
In 61 top of door shaped stent, fixation holes 62, door shaped stent 61, fixation holes 62 and pulley is arranged in 61 side side of door shaped stent
63 constitute upper supporting mechanism 6, and fixation holes 62 and stopping snak link 24 cooperate, and realize the control of setting height.When experiment is tied
Shu Shi stops snak link 24 and buckles into fixation holes 62, realizes positioning.
To realize that more using effects, above scheme can also add as follows: passing through in the middle part of cross tube 31
Shaft (being not marked in figure) is installed on upper support bar 32, and one end connects top pressurization wirerope 21, and the other end passes through seaming chuck
33 are equipped with upper limit device 34, and load pressure head 35 on several is connected below upper limit device 34；Pass through shaft in the middle part of sheer pole 41
(being not marked in figure) is installed on lower support bar 42, and one end connects lower part pressurization wirerope 22, and the other end is pacified by push-down head 43
Equipped with lower retainer 44, several lower load pressure heads 45 are set, and upper support bar 32 will using lever principle above lower retainer 44
The swing of cross tube 31 is converted to load pressure head 35 and provides power, and lower support bar 42 uses lever principle by the pendulum of sheer pole 41
Turn is changed to lower load pressure head 45 and provides power.It is furthermore preferred that upper pressing spring 46 is arranged below push-down head 43.
To realize that more using effects, above scheme can also add as follows: in conjunction with Fig. 4 and Fig. 5, sample preparation
Cylinder 5 is mounted on lower support mechanism 7, and lower support machine, 7 include several for supporting panel 71 and being set on support panel 71
Accommodating hole 72, sample preparation cylinder 5 are installed in accommodating hole 72.It is furthermore preferred that sample preparation cylinder 5 includes cylinder 52,51 and of buckle in conjunction with Fig. 4
Lantern ring 53, cylinder 52 are made of two panels, and lantern ring 53 is set on 52 outer wall of two panels cylinder at least provided with one, buckle 51
In 52 outside of cylinder, buckle hole 73 is provided on the outside of accommodating hole 72,52 side of cylinder is realized in 51 cooperation of buckle hole 73 and buckle
Side is fixed；Lower support mechanism 7 fixes on the ground, and door shaped stent 61 and upper support bar 32 and support panel 71 consolidate, and two
Cylinder 52 is fixed on support panel 71 by accommodating hole 72 and buckle hole 73, and it is center-left that lower support bar 42 is consolidated in support
The side position 10cm；Upper 46 lower part of pressing spring and pedestal 75 consolidate.
To realize that more using effects, above scheme can also add as follows: overhead power part 11 is one
A hollow funnel-like device, material are preferably iron, volume 0.1m3, lower power part 12 is with overhead power part 11 with phase
Same shape and substance.
To realize that more using effects, above scheme can also add as follows: 11 center of overhead power part
Place's setting band crossbeam hole 16, lower part pressurization wirerope 22 pass through band crossbeam hole 16 and connect with overhead power part 11, play pressure
Power conduction.
To realize that more using effects, above scheme can also add as follows: 12 edge of lower power part
Two elipse holes 17 of place's setting, two elipse holes 17 are arranged symmetrically, top pressurize wirerope 21 by elipse hole 17 with
Lower power part 12 connects, and plays the role of pressure conduction.
As a more specific scheme: as shown in fig. 1~fig. 5, a kind of three axis of Bidirectional-pressure of the present embodiment try
Sample sample preparation device, including pressure mechanism 1, pressure conduction mechanism 2, top pressing mechanism 3, lower part pressing mechanism 4, sample preparation cylinder 5, on
Portion's supporting mechanism 6, lower support mechanism 7.
Pressure mechanism 1 include overhead power part 11, lower power part 12, soft conduit 13, upper time controller 14, under
Portion's time controller 15, band crossbeam hole 16, elipse hole 17.Overhead power part 11 and lower power part 12 pass through soft conduit
13 connections, 11 bottom of overhead power part is equipped with upper time controller 14, in the case where 15 corresponding position of lower power part is equipped with
Portion's time controller 15.
Pressure conduction mechanism 2 buckles 23 including top pressurization wirerope 21, lower part pressurization wirerope 22, connecting spring, stops
Snak link 24；Top pressurization wirerope 21 is divided into two strand steel wire ropes at pulley 63, one end tail portion by hook with it is symmetrically ellipse
Circular hole 17 connects, and the other end is connect by connecting spring button 23 with cross tube 31.
Top pressing mechanism 3 includes cross tube 31, upper support bar 32, seaming chuck 33, upper limit device 34, upper load pressure head
35, top pressing mechanism 3 is generally in support 71 top of panel.31 side of cross tube is connect with connecting spring button 23, upper support
Bar 32 is arranged in it at 1/6th, and the other side is connect with seaming chuck 33, and upper support bar 32 is arranged in cross tube 1/31st 6
At length, the top of upper limit device 34 is consolidated with upper load pressure head 33, it is equally distributed there are three consolidations below upper limit device 34 on
Load pressure head 35.
Lower part pressing mechanism 4 includes sheer pole 41, lower support bar 42, push-down head 43, lower retainer 44, lower load pressure head
45, upper pressing spring 46；Lower part pressing mechanism 4 is integrally located on pedestal, and 41 one end of sheer pole and lower part pressurization wirerope 21 consolidate,
The other end is connect with push-down head 43；Lower support bar 42 is arranged at 1/41st 6 length of sheer pole, the lower section of push-down head 43 with it is upper
Pressing spring 46 consolidates, and top and lower retainer 44 consolidate, and there are three equally distributed lower load pressures for consolidation above lower retainer 44
First 45.
Sample preparation cylinder 5 includes 51, cylinder 52, lantern ring 53 of buckle；Sample preparation cylinder 5 is fixed on support middle panel, buckle 51 and card
Button hole hole 73 matches, and cylinder 53 matches with accommodating hole 72, and 5 top hole of sample preparation cylinder matches with upper load pressure head 35, under
Portion's hole matches with lower load pressure head 45, and lantern ring 53 is symmetrically arranged in cylinder 52.
Upper supporting mechanism 6 includes door shaped stent 61, fixation holes 62, pulley 63；Door shaped stent 61 is consolidated in supporting surface
71 top of plate, skidding 63 are fixedly arranged on door shaped stent 61, and fixation holes 62 are located on door shaped stent 61；
Lower support mechanism 7 includes support panel 71, accommodating hole 72, buckle hole 73, wirerope hole 74, pedestal 75；
Lower support mechanism 7 fixes on the ground, and door shaped stent 61 and upper support bar 32 and support panel 71 consolidate, and two cylinders 52 are logical
It crosses accommodating hole 72 and buckle hole 73 is fixed on support panel 71, lower support bar 42 is consolidated in support center-left side 10cm
It sets；Upper 46 lower part of pressing spring and pedestal consolidate.
Overhead power part 11 is a hollow funnel-like device, and material is preferably iron, volume 0.1m3, lower power
Part 12 and overhead power part 11 are of similar shape and substance.
Soft conduit 13 is the rubber catheter of length 46mm, for connecting overhead power part 11 and lower power part 12.
Upper time controller 14 and lower time controller 15 are connect at soft conduit two sides respectively, soft by adjusting
The flow quantity intelligent control pressure of filler and sample preparation time in matter conduit 13.
Band crossbeam hole 16 is located at 11 center of overhead power part, is connect, is risen with lower part pressurization wirerope 22 by hook
It is acted on to pressure conduction, identical hole is arranged at the center of lower power part 12.
Elipse hole 17 is symmetrically arranged in 12 edge of lower power part, is connect by hook with top pressurization wirerope 21,
Play the role of pressure conduction.There are the elipse holes 17 of identical size for 11 corresponding position of overhead power part.
Top pressing mechanism 11 is connected by hook with top pressurization wirerope 21, former using lever by upper support bar 32
Reason is that upper load pressure head 35 provides power.
Pressure conduction mechanism 2 top pressurization 21 side of wirerope pulley punishment be diameter it is identical, length it is different two
Strand steel wire rope, two strand steel wire rope tail portions are connected separately with hook, are connect by linking up with elipse hole 17；Pressurize wirerope on top
21 other sides are connect by connecting spring button 23 with cross tube 31.Power is provided for top pressing mechanism 3.
Connecting spring button 23 is the identical stainless steel spring button of material size with snak link 24 is stopped.23, connecting spring button
In top pressurization 21 tail portion of wirerope, and it is connect with cross tube 31.Stop snak link 24 to be located at the connecting spring side of buckling 10cm.
It will stop snak link 24 at the end of experiment to connect with fixation holes 62.
31 total length of cross tube is 60cm, and 32 length of upper support bar is 20cm, and upper support bar 32 is arranged in 31 end of cross tube
Supporting point at portion 10cm, as pressure amplification.
Upper 35 height 4cm of load pressure head, is connected with cross tube 31 in end, and is located at 34 center of upper limit device.
34 thickness 2cm of upper limit device, top and seaming chuck 33 consolidate, and for guaranteeing sample preparation height, there are three lower part consolidations
Upper load pressure head 35, fall head 3cm, diameter 3.91cm, for suppressing sample downwards.
41 total length of sheer pole is 60cm, and the length of lower support bar 42 is 15cm, at 42 end 10cm of sheer pole under
Cross bar 41 connects, the supporting point as pressure amplification.
The height 6cm of push-down head 43, lower part and upper pressing spring 46 consolidate, and top and lower retainer 44 consolidate, push-down head 43
At 44 center of lower retainer.
44 thickness 2cm of lower retainer, lower part and push-down head 43 consolidate, and play the purpose for guaranteeing sample preparation height, lower retainer
There are three lower load pressure heads 45 for 44 tops consolidation, and have a haircut height 3cm, diameter 3.91cm, for suppressing sample upwards.
The internal diameter of cylinder 52 is 3.91cm, outer diameter 4.5cm, in fact it is highly preferred that is 14.0cm.The buckle 51 is rolled over for cylinder
Shape, diameter is preferably 0.5mm, a length of 1cm of horizontal direction, a length of 1.5cm of vertical direction, positioned at the hollow sample preparation cylinder of semicircle
Side midpoints.The effect of buckle 51 is to be fixed on cylinder 52 on support panel 71.53 outside diameter 4.7cm of lantern ring, width
For 20mm, lantern ring is separately fixed in cylinder upper edge, lower section lantern ring is symmetrically fixed for fixing latex film.
The height 1.3m of door shaped stent 61, width 1.3m are used to support pressure mechanism 1 and pressure conduction mechanism 2.
Fixation holes 62 are 2cm high, wide 1.5cm, apart from 31 top 36cm of upper beam, when off-test, will stop snak link
24 are fixed at fixation holes 62.
Pulley 63 is located at 61 top of door shaped stent, and the wirerope 21 that can pressurize to top is propped up with lower part pressurization wirerope 22
Support and steering.
The length for supporting panel 71 is 1.6m, width 1m, with a thickness of 2cm, for fixing door shaped stent 61 and upper support
Bar 32.
The diameter of accommodating hole 72 is 4.7cm, and buckle hole 73 is 0.8cm apart from accommodating hole distance, and sample preparation makes to make before starting
Sample cylinder 5 and buckle 51 are respectively aligned to accommodating hole 72 and buckle hole 73, and make 5 arranged orthogonal of sample preparation cylinder.
Pedestal 75 is arranged in ground, as the support construction of lower part pressing mechanism 4 and upper pressing spring 46,75 size of pedestal with
Support panel 71 consistent.Lower support bar 42 and upper pressing spring 46 are consolidated on pedestal.
Upper 46 diameter 5cm of pressing spring, length is 15cm under unstressed state, the length under by the effect of 1000kpa pressure
For 5cm.When upper pressing spring 46 compresses completely, 1mm in sample preparation cylinder 5 is protruded at the top of lower load pressure head 45.Upper 46 lower section of pressing spring
It is consolidated with pedestal 75, top and push-down head 43 consolidate.The downward pressure that upper pressing spring 46 applies lower part pressing mechanism 4 converts
For the upward thrust for push-down head 43, pressure is applied to sample upwards.
In conjunction with shown in FIG. 1 to FIG. 3, the course of work that above-mentioned apparatus carries out sample sample preparation is as follows:
(1) prepare before experiment
The pressure for determining required application in experimentation is formed according to the stress history, sedimentary condition and particle of experiment soil
Time required for power size and experiment.
(2) instrument prepares
1. first determining whether the filling object amount in 1 middle and upper part force piece 11 of pressure mechanism is sufficient, and gravity should make pressure bullet
Spring 46 is depressed into Exact Design height, checks in lower power part 12 whether there is filler, cross tube 31 should be made if non-filler
In horizontality.
2. special latex film is fixed on inside cylinder 52, when placement, makes both sides be more than the latex film of 52 length of cylinder as far as possible
Length is consistent, and guarantees 52 inside of cylinder and latex film contact position corrugationless and air, will using lantern ring 53 after inspection
The extra latex film in two sides is fixed on cylinder cylinder 52.
3. sample preparation cylinder 5 should be in accommodating hole 72, light to press 31 right side of cross tube if sample preparation cylinder 5 is not in the position, make
Load pressure head 35 is lifted up to appropriate location, and buckle 51 is entered buckle hole 73.
4. the setting compacting time.Upper time controller 14 and lower time controller 15 are set, by controlling filler
Flow control pressure size and the sample preparation time.
(3) soil sample is placed
3 parts of soil sample of design weight are weighed, are respectively put into sample preparation cylinder 5.It is appropriate for applying on the right side of cross tube when placement
Pressure makes to load pressure head 35 and sample preparation cylinder 5 isolates sufficient space and is put into sample soil sample.
(4) compacting is completed
When reaching the time of setting between when pressurized, upper time controller 14 will control pressure mechanism make its stop after
Continue to the sample soil body and applies pressure.Connection stops snak link 24 and fixation holes 62, then by connecting spring button 23 and cross tube 31
Separation, top pressing mechanism 3 is in not by external force state at this time.
(5) soil sample is taken out
Appropriate pressure is applied to 31 side of cross tube, separates seaming chuck 33 with sample preparation cylinder 5, takes out sample preparation cylinder 5, and carry out
Demoulding.Lantern ring is first removed when demoulding, two cylinders 52 are separated, that is, can be taken off the sample of latex film package, sample can be straight at this time
It connects and tries to use for lower pacing.
(6) tool reset
Upper time controller 14 and lower time controller 15 are adjusted, then inverts the position of two-way pressure mechanism,
So that lower power part 12 is in top, connects all parts on pressure mechanism.Connecting spring button 23 is connect with cross tube 31,
Stop snak link 24 to separate with fixation holes 62, then next sample preparation can be carried out by (1)-(5) step.
The triaxial test sample preparation effect of the application and traditional sample preparation effect comparison are as shown in table 1.
The comparison of 1 triaxial test sample preparation effect of table
The application has the beneficial effect that as can be seen from Table 1
1. overcoming traditional unilateral sample preparation device using opposite pressurization cannot sufficiently be compacted the soil body and the defect of uniformity difference.
2. pressing time and pressure size can accurately be controlled, and it is capable of the loading process of accurate simulation underground soil.
3. can 1~3 sample of one-pass molding, save the sample preparation time, and reduce sample preparation in batches generation sample preparation miss
Difference.
Facilitate sample preparation cylinder to sample 4. being packed into latex film in sample preparation cylinder, reduce sample breakage rate, can be mentioned for test in next step
For convenient, to improve test efficiency.
The above content is the preferred embodiments of combination the invention to further detailed made by provided technical solution
Describe in detail bright, and it cannot be said that the invention specific implementation is confined to these above-mentioned explanations, technology affiliated for the invention
For the those of ordinary skill in field, without departing from the concept of the premise of the invention, several simple deductions can also be made
Or replacement, it all shall be regarded as belonging to the protection scope of the invention.
Claims (10)
1. a kind of three axis sample sample preparation devices of Bidirectional-pressure, it is characterised in that: including pressure mechanism, pressure conduction mechanism, on
Portion's pressing mechanism, lower part pressing mechanism and sample preparation cylinder and multiple pulleys, pressure mechanism, top pressing mechanism, sample preparation cylinder are under
Portion's pressing mechanism is sequentially arranged from top to bottom, and multiple pulleys are fixedly installed on above pressure mechanism, and the pressure mechanism includes upper
Portion's force piece, lower power part, upper time controller, lower time controller, overhead power part pass through with lower power part
Soft conduit connection, overhead power part bottom is equipped with upper time controller, lower power part and upper time controller pair
Answer position that lower time controller is installed, upper time controller and lower time controller connect with soft conduit two sides respectively
It connects, adjusts the flow of filler in soft conduit, to realize intelligent control pressure；
The pressure conduction mechanism includes top pressurization wirerope and lower part pressurization wirerope；
The top pressing mechanism includes cross tube and load pressure head on several, and cross tube one end and top pressurization wirerope connect
It connects, is swung with the movement of top pressurization wirerope, top is pressurizeed after at least one pulley of wirerope pile warp, is connected with lower power part
It connects, pressure head is loaded in other end setting, upper load pressure head is located above sample preparation cylinder, and swings and move up and down with cross tube；Under
Portion's pressing mechanism includes sheer pole and several lower load pressure heads, and sheer pole one end is connect with lower part pressurization wirerope, with lower part
Pressurization wirerope is mobile and swings, and lower part is pressurizeed after at least one pulley of wirerope pile warp, is connect with overhead power part, the other end
Setting is lower to load pressure head, and lower load pressure head is located at below sample preparation cylinder, and is correspondingly arranged with upper load pressure head；Pressurize steel wire on top
Rope, lower part pressurization wirerope according to pressure change change operating status, and then drive on load pressure head, it is lower load pressure head up and down
It is mobile, that is, realize the change of sample preparation time.
2. a kind of three axis sample sample preparation devices of Bidirectional-pressure as described in claim 1, it is characterised in that: the top pressurization
It is provided with stopping snak link on wirerope and connecting spring is buckled, top pressurization wirerope is buckled and cross tube activity by connecting spring
The fixation of position at setting height is realized in connection by stopping snak link.
3. a kind of three axis sample sample preparation devices of Bidirectional-pressure as claimed in claim 2, it is characterised in that: the pulley installation
At the top of door shaped stent, fixation holes, fixation holes and stopping snak link cooperation is arranged in door shaped stent side side, realizes setting
The control of height.
4. a kind of three axis sample sample preparation devices of Bidirectional-pressure as described in claim 1, it is characterised in that: in the cross tube
Portion is installed on upper support bar by shaft, and one end connects top pressurization wirerope, and the other end is equipped with the upper limit by seaming chuck
Position device, upper limit device lower section, which connects, loads pressure head on several；It is installed on lower support bar in the middle part of sheer pole by shaft, one end
Pressurize wirerope for connection lower part, and the other end is equipped with lower retainer by push-down head, is arranged under several above lower retainer and adds
Pressure head is carried, upper support bar uses lever principle to provide power for upper load pressure head, and lower support bar uses lever principle for lower load
Pressure head provides power.
5. a kind of three axis sample sample preparation devices of Bidirectional-pressure as claimed in claim 4, it is characterised in that: under the push-down head
Upper pressing spring is arranged in side.
6. a kind of three axis sample sample preparation devices of Bidirectional-pressure as described in claim 1, it is characterised in that: the sample preparation cylinder peace
Mounted in lower support mechanism, lower support mechanism includes several accommodating holes for supporting panel and being set on support panel, system
Sample cylinder is installed in accommodating hole.
7. a kind of three axis sample sample preparation devices of Bidirectional-pressure as claimed in claim 6, it is characterised in that: the sample preparation cylinder packet
Cylinder, buckle and lantern ring are included, cylinder is made of two panels, and lantern ring is set on two panels cylinder body outer wall at least provided with one, buckle
On the outside of cylinder, it is provided with buckle hole on the outside of accommodating hole, buckles hole and is clasped, realizes that cylinder side is fixed.
8. a kind of three axis sample sample preparation devices of Bidirectional-pressure as described in claim 1, it is characterised in that: the lower power
Two elipse holes are arranged in part edge, and two elipse holes are arranged symmetrically, and top pressurization wirerope is by elipse hole under
The connection of portion's force piece.
9. a kind of three axis sample sample preparation devices of Bidirectional-pressure as described in claim 1, it is characterised in that: the overhead power
Setting band crossbeam hole at part center, lower part pressurization wirerope pass through band crossbeam hole and connect with overhead power part.
10. such as a kind of described in any item three axis sample sample preparation devices of Bidirectional-pressure of claim 1-9, it is characterised in that: institute
Stating overhead power part is a hollow funnel-like device, and interior is filler；Lower power part is symmetrical to overhead power part.
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| CN201810809755.4A CN109238796B (en) | 2018-07-23 | 2018-07-23 | Two-way pressurized triaxial sample preparation device |
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| CN109238796B (en) | 2020-11-03 |
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