CN110082186A - A kind of sample producing device and production method for unconfined compression test - Google Patents
A kind of sample producing device and production method for unconfined compression test Download PDFInfo
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- CN110082186A CN110082186A CN201910474412.1A CN201910474412A CN110082186A CN 110082186 A CN110082186 A CN 110082186A CN 201910474412 A CN201910474412 A CN 201910474412A CN 110082186 A CN110082186 A CN 110082186A
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- 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
The invention discloses a kind of sample producing devices and production method for unconfined compression test, belong to the sample preparation device and method class of civil engineering material.Sample producing device of the invention mainly includes storage device, equal mixing device, metering device, pressure-like device and automatic control device etc., and sample preparation device is simple, easy to operate, is easy and fast to realize the production of different sized samples, repeatability is high.Sample production method of the invention mainly includes several steps such as mixed material, mixture weighing, the assembling of pressure-like device, sample compacting and sample taking-up.The uniformity that sample is produced in the invention is good, can accurate Control Assay moisture content and dry density, in place by the compacting of one step of hydraulic control, solves the problems, such as sample preparation pressure unevenly, lower leaf and Density inhomogeneity on sample；Can largely improve the yield rate, uniformity and sample preparation efficiency of sample, and the scope of application it is wider, it can be achieved that unsaturated soil, Polluted Soil and in terms of application.
Description
Technical field
The invention discloses a kind of sample producing devices and production method for unconfined compression test, belong to building work
The sample preparation device class and method class of journey material.
Background technique
In field of civil engineering such as architectural engineering, hydraulic engineering, traffic engineering and geotechnical engineerings, sample without lateral confinement resistance to compression
Intensity and permeability index are the important components carried out in engineering design and research.In geotechnical engineering field, work as weak soil
Or Polluted Soil is after certain means improve or handle, it is often necessary to be changed by unconfined compression test and permeability test to test
The engineering characteristics such as solidified earth intensity, destruction characteristic and permeability after good provide reliably for basement process design and analytical calculation
Foundation.Unconfined compression test is a kind of special triaxial test that confining pressure is zero, and unconfined compressive strength refers to sample in no side
Under the conditions of limit, sample resists the ultimate strength of axial compressive force, and size is equal to vertical limit pressure when sample destroys, commonly uses nothing
Confining pressure instrument measures, and sample can be cylindrical body, or square.
According to earthwork test rule, prepare soil sample and need its compactness of strict control, with meet parallel sample uniformity,
The requirement of the comparability and validity of test data.Currently, common sample preparation device is the cylinder mould with pedestal and pressure head, it will
The soil body is packed into the cylinder mould with collet, applies active force to cylinder mould under the effect of internal pressure head, with the downward compacted soil of internal pressure head
Body is discharged the air in the soil body, soil compaction.But when using existing sample preparation device sample preparation, be frequently present of filler it is uneven,
Phenomena such as sample inner clip deposits air, causes sample irregular or has hole and slight crack, brings extreme difficulties, and finished product to sample preparation
Rate is not high.Production method about sample mainly has compacting process, pressure-like method and concretion method: compacting process is to be divided soil sample with hammering method
Layer hits reality into sample making apparatus, if produce cutting ring sample, compacted soil samples can be cut into the earth pillar slightly larger than cutting ring diameter, ring
Sample is scabbled in knife vertical depression, side flanging；When production is for the sample of unconfined compression test or permeability test, by soil sample point
Layer pours into mold and consolidates, although sample preparation is simple, considerably increases sample preparation workload, causes soil sample compacting uneven, between soil sample
Uniformity and mass difference it is larger, easily there is phenomena such as upper lower leaf, compactness is uneven in sample production.Pressure-like method is will be wet
Soil sample is poured into pre-packed cutting ring, using reality is hit or static pressure method prepares sample, although this method can obtain uniform sample,
The bad control of sample preparation complex steps, dry density, sample preparation size is vulnerable to limitation, cutting ring easy to damage.Concretion method is applied by top
The mode of static load makes moisture content be greater than the thin mud quick-discharging consolidation of liquid limit, saturated sample is formed, although the soil sample produced is equal
It is even, but saturated sample can only be made.
Many patents have been disclosed about geotechnological sample preparation device, such as a kind of more function of geotechnical engineering triaxial test preparation of soil sample
It can sample preparation device (201410144259), a kind of dual compression preparation of soil sample device (201711077545), a kind of semi-automatic hollow
(201820195321 pairs of traditional method for making sample are improved cylinder soil sample producing device, and work when sample preparation is carried out to reduce
Amount, but these devices can only carry out the soil sample production of single size, be unable to satisfy the production requirement of different size soil samples, some are needed
Repeatedly to lift weight to be squeezed, considerably increase experimental work amount.In addition, granted patent file
(201510121103.8) a kind of sample preparation device of unconfined compression test is disclosed, is filled in by using top under the action of the spring
It in soil sample iterative method cylinder mould tentatively closely knit in funnel, will guarantee that top plug persistently compresses soil in soil sample exhaust process
Gas in soil sample is discharged gradually in sample, but this method is only applicable in the high saturated sample of production compactness；Granted patent file
(201510907688.6) a kind of method for making remolding soil specimens is disclosed, although can control according to moisture control
Dry density processed, but it is only applicable to the preparation of cylindrical sample, sample preparation low efficiency；File (201610477809.2) discloses one kind
The clay sample preparation device and method for making sample of moisture content, density are controlled simultaneously, but vacuum suction, heating isothermal involved in the present invention
Measurement system is controlled, structure is complicated, is only applicable to clay known to specific gravity；Granted patent file (201310281553.4) discloses
A kind of remodeling fine grained soil sample preparation device solves fine grained soil by adding permeable stone, filter paper and setting cover board, gas vent etc.
Exhausting problem in sample making course, but the device is only applicable to the production of cutting ring sample.
For current existing sample preparation device or method for making sample, still has the disadvantage that and need to solve；It is the moisture content of sample, close
Degree cannot quantitatively obtain or control, and the comparativity of various sample, which exists, to be queried；It cannot prepare non-full with certain moisture content
With remodeling sample, sample preparation device is difficult between the soil body and concrete general, limits the extensive of sample preparation device to a certain extent
Using；Sample preparation low efficiency etc..
Summary of the invention
Technical problem:
To solve technical problem present in well-known technique, the present invention provides a kind of examinations for unconfined compression test
Sample producing device and production method, the invention can control the moisture content and density of sample, solve sample preparation pressure is uneven, on sample
The problem of lower leaf and Density inhomogeneity, can largely improve the yield rate, uniformity and sample preparation efficiency of sample, fit simultaneously
It is wider with range, it can be achieved that unsaturated soil, Polluted Soil and in terms of application.
Technical solution:
To achieve the goals above, the technical solution adopted by the present invention is that:
The present invention be used for unconfined compression test sample producing device, the device include: storage device, equal mixing device,
Metering device, pressure-like device and automatic control device,
The storage device includes storage tank, storage powder tank and fluid reservoir, and the lower part of the storage tank is equipped with flow valve A, institute
The lower part for stating storage powder tank is equipped with flow valve B, and the lower part of the fluid reservoir is equipped with flow valve C,
The equal mixing device includes feed inlet and stirring blade, and feed inlet is located at the top of equal mixing device, the storage tank
It is connected by discharge nozzle with feed inlet, discharge nozzle is set to the lower part of flow valve A, and the storage powder tank passes through flour extraction pipe and feed inlet phase
Even, flour extraction pipe is set to the lower part of flow valve B, and the fluid reservoir is connected by outlet tube with feed inlet, and outlet tube is set to flow valve C
Lower part,
The metering device includes measuring tank and electronic scale, and measuring tank is placed on electronic scale, and measuring tank is located at conveying pipeline outlet
Underface, one end of conveying pipeline are connected to the bottom of equal mixing device, and conveying pipeline is equipped with control valve,
The pressure-like device includes pedestal, transmission device, mold base, mold, the clip with nut, connection ring, auxiliary
Mold, pressure pad, support column, crossbeam, hydraulic stem and hydraulic controller, the transmission device and support column are fixed on pedestal, institute
It states and is installed on power controller in transmission device, the conveyer belt upper surface of the transmission device is flushed with the upper surface of pedestal, institute
Crossbeam to be stated to be bolted on support column, the hydraulic stem is fixed under crossbeam,
The automatic control device includes collection hop controller and data collector, the flow valve A, flow valve B, flow
Valve C, control valve, electronic scale, power controller and hydraulic controller pass through data line respectively and are connected on collection hop controller.
As an improvement of the present invention, the mold is identical with the cross sectional shape and size size of auxiliary mould, can
Think round, square, rectangle or polygon, the vertical height of auxiliary mould can be equal to or more than the vertical height of mold
Degree, the outer diameter of the mold bottom and the internal diameter of mold base are consistent, and the mold is metal material or rigid plastics, and mold can
Be monomer, bivalve or three valves.
It is improved as another kind of the invention, the clip is installed in the outer surface of mold, and the clip quantity is according to mould
The quantity of tool determines, can for zero, one, it is two or more, the connection ring can be fixed on auxiliary mould bottom, connection
The internal diameter of ring and the outer diameter of mold are consistent.
It is improved as another kind of the invention, the transmission device also has vibrating function other than transmitting function.
Specifically, the present invention includes the following steps: for the sample production method of unconfined compression test
A. material is mixed: by treated, raw material, curing agent and water are stored respectively to storage tank, storage powder tank and fluid reservoir
In, according to preset curing agent volume, moisture content and the amount of being used in mixed way, flow valve A, flow are adjusted by collection hop controller simultaneously
The flow velocity and time of valve B and flow valve C make raw material, curing agent and water pass through discharge nozzle, flour extraction pipe and outlet tube respectively and flow into
Into equal mixing device, starting stirring blade mixes each component uniformly,
B. mixture weighs: according to preset sample density and specimen size, calculating the mixture weight of individual sample, leads to
Uninterrupted and the time of collection hop controller adjusting control valve are spent, mixture needed for weighing individual sample,
C. the assembling of pressure-like device: first by the interior bottom of mold base, the inner wall of mold, the inner wall of auxiliary mould and pressure pad
Bottom surface smears lubricant or vaseline respectively, and mold base is placed on the conveyer belt of transmission device, will be in mold bottom
In mold base, auxiliary mould is placed on mold, is integral mold and auxiliary mould fixation by connection ring,
And clip is added along mold side, mold is stablized by nut,
D. sample is suppressed: the vibration mode for the controller that turns on the power, and the mixture in graduated cylinder is at the uniform velocity poured into pressure-like dress
In setting, pressure pad is put to mixture top and closes the vibration mode of power controller after vibration uniformly and opens transmission mode,
It moves to the mold with mold base and auxiliary mould on pedestal, and is located at the underface of hydraulic stem, then start hydraulic control
Device processed makes hydraulic stem elongation push pressure pad, until the bottom surface of pressure pad is flushed with die top,
E. sample takes out: adjusting hydraulic controller makes contraction of hydraulic pressure bar go up, and then successively removes auxiliary mould, connection ring
And mold base, in equating mold after the both ends of the surface of sample, finally unscrews nut, opens clip, dismantle pressure-like device, take out examination
Sample.
It is improved as another kind of the invention, the raw material can be soil, the Polluted Soil for soil test, can also
Think the mortar of concrete test and the mixture of stone.
The utility model has the advantages that
Compared with prior art, the invention has the advantages that:
(1) the control precision of moisture content and curing agent content is high: each component of sample mixed material can be by collecting hop controller
Flow valve is adjusted, to realize the accurate control of each component percentage composition.
(2) mixing uniformity is good: being realized between raw material, curing agent and solution by the machine stirring blade in equal mixing device
Uniformly mixing, in the agitating device of relative closure, it is possible to increase the mixture usage amount of prefabricated sample, avoid moisture content loss and
The phenomenon of mixture deficiency.
(3) dry density control precision is high: according to the loading speed of servo-fluid compression bar, passing through the working time of hydraulic controller
Pushing height of the pressure pad in auxiliary mould cylinder and mold cylinder is controlled, with accurate Control Assay height, aforementioned known aqueous
Under the premise of rate, accurate Control Assay dry density.
(4) sample preparation is high-efficient: sample preparation device is simple, easy to operate, is easy and fast to realize, repeatability is high；Pass through transmission
Carrying device moves to sample quickly and accurately to pressure area；Bivalve film, mold base, auxiliary mould and card can be used in sample mould
Joint fixing mould is detained, and detachability is good, and it is high-efficient to tear sample open.
(5) sample preparation uniformity is good: using the vibrating function in transmission device, being effectively discharged in mixture by vibrational energy
Gas；It is uneven steady effectively to solve sample preparation pressure for the equal stability and speed controllability loaded using existing servo-hydraulic equipment
Problem, and mixture once pours into, and pressure-like process is avoided uneven and lamination up and down occur.
(6) device applicability is wide: conveniently replaced various sizes of mold and pressure pad realize the system of different sized samples
Make, also may be implemented in the application of unsaturated soil, Polluted Soil and concrete etc..
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sample producing device for unconfined compression test；
Fig. 2 is the A-A sectional view of the sample producing device for unconfined compression test.
In figure: 1, storage tank, 2, storage powder tank, 3, fluid reservoir, 4, flow valve A, 5, flow valve B, 6, flow valve C, 7, discharging
Pipe, 8, flour extraction pipe, 9, outlet tube, 10, feed inlet, 11, equal mixing device, 12, stirring blade, 13, conveying pipeline, 14, control valve,
15, measuring tank, 16, electronic scale, 17, collection hop controller, 18, pedestal, 19, transmission device, 20, power controller, 21, mold bottom
Seat, 22, mold, 23, clip, 24, nut, 25, connection ring, 26, auxiliary mould, 27, pressure pad, 28, support column, 29, crossbeam,
30, hydraulic stem, 31, hydraulic controller, 32, data collector.
Specific embodiment
Below with reference to drawings and examples, the present invention is described in detail.
As shown in Figure 1, the present invention be used for unconfined compression test sample producing device, the device include: storage device,
Equal mixing device 11, metering device, pressure-like device and automatic control device,
The storage device includes storage tank 1, storage powder tank 2 and fluid reservoir 3, and the lower part of the storage tank 1 is equipped with flow valve
A4, the lower part of the storage powder tank 2 are equipped with flow valve B5, and the lower part of the fluid reservoir 3 is equipped with flow valve C6,
The equal mixing device 11 includes feed inlet 10 and stirring blade 12, and feed inlet 10 is located at the top of equal mixing device 11,
The storage tank 1 is connected by discharge nozzle 7 with feed inlet 10, and discharge nozzle 7 is set to the lower part of flow valve A4, and the storage powder tank 2 is logical
Flour extraction pipe 8 is crossed to be connected with feed inlet 10, flour extraction pipe 8 be set to flow valve B5 lower part, the fluid reservoir 3 by outlet tube 9 with into
Material mouth 10 is connected, and outlet tube 9 is set to the lower part of flow valve C6,
The metering device includes measuring tank 15 and electronic scale 16, and measuring tank 15 is placed on electronic scale 16, and measuring tank 15 is located at defeated
The underface that expects pipe 13 exports, one end of conveying pipeline 13 are connected to the bottom of equal mixing device 11, and conveying pipeline 13 is equipped with control valve
14,
The pressure-like device include pedestal 18, transmission device 19, mold base 21, mold 22, the clip 23 with nut 24,
Connection ring 25, auxiliary mould 26, pressure pad 27, support column 28, crossbeam 29, hydraulic stem 30 and hydraulic controller 31, the transmission dress
Set 19 and support column 28 be fixed on pedestal 18, be installed on power controller 20 in the transmission device 19, the crossbeam 29 is logical
Bolt to be crossed to be fixed on support column 28, the hydraulic stem 30 is fixed under crossbeam 29,
The automatic control device includes collection hop controller 17 and data collector 32, the flow valve A4, flow valve
B5, flow valve C6, control valve 14, electronic scale 16, power controller 20 and hydraulic controller 31 are connected to by data line respectively
Collect on hop controller 17.
As an improvement of the present invention, as shown in Fig. 2, the conveyer belt upper surface of the transmission device 19 and pedestal 18
Upper surface flushes, and the mold 22 is identical with the cross sectional shape and size size of auxiliary mould 26, can be round, square
Shape, rectangle or polygon, the vertical height of auxiliary mould 26 can be equal to or more than the vertical height of mold 22, the mold
The outer diameter of 22 bottoms is consistent with the internal diameter of mold base 21, and the mold 22 is metal material or rigid plastics, and mold 22 can be with
Be monomer, bivalve or three valves.The clip 23 is installed in the outer surface of mold 22, and 23 quantity of clip is according to mold
22 quantity determines, can for zero, one, it is two or more, the connection ring 25 can be fixed on 26 bottom of auxiliary mould,
The internal diameter of connection ring 25 is consistent with the outer diameter of mold 22.The transmission device 19 also has vibrating function other than transmitting function.
The present invention is used for the sample production method of unconfined compression test, and specific embodiment is as follows:
According to the material properties of prefabricated sample, shape, size, moisture content and density, flow valve A (4), flow valve B5 are adjusted
With flow valve C6, the shapes and sizes of mold 22 and pressure pad 27 are selected.
Embodiment 1
A. material is mixed: silt soil, powdered curing agent lime and the water after air-drying sieving are stored respectively to storing
In tank 1, storage powder tank 2 and fluid reservoir 3, according to preset curing agent volume 15%, moisture content 30% and the amount of being used in mixed way 1200g,
Flow valve A4, the flow velocity of flow valve B5 and flow valve C6 and time are adjusted simultaneously by collection hop controller 17, makes silt soil, lime
Pass through discharge nozzle 7, flour extraction pipe 8 and outlet tube 9 respectively with water to flow into equal mixing device 11, the total mixture stirred in advance is
1500g or so, starting stirring blade 12 mix each component uniformly,
B. mixture weighs: according to preset sample density 2.0g/cm3With specimen size (cylinder sample: diameter 5cm, height
10cm), the mixture weight (about 400g) for calculating individual sample, by the uninterrupted for collecting 17 adjusting control valve 14 of hop controller
And time, mixture 400g needed for weighing individual sample produce 3 Duplicate Samples,
C. the assembling of pressure-like device: first by the interior bottom of stainless steel mould the pedestal 21, (size are as follows: internal diameter 5cm, height of mold 22
Degree 10cm, wall thickness 0.5cm) inner wall, the inner wall of auxiliary mould 26 and the bottom surface of pressure pad 27 smear vaseline, mold 22 respectively
It is made of two petals, the diameter of pressure pad 27 is 5cm, mold base 21 is placed on the conveyer belt of transmission device 19, by mould
Have 22 bottoms to be embedded in mold base 21, auxiliary mould 26 is placed on mold 22, by connection ring 25 by 22 He of mold
The fixation of auxiliary mould 26 is integral, and adds clip 23 along 22 side of mold, stablizes mold 22 by nut 24,
D. sample is suppressed: the mixture in graduated cylinder 15 is at the uniform velocity poured into pressure by the vibration mode for the controller 20 that turns on the power
In sampling device, pressure pad 27 is put to mixture top, after vibration uniformly, the vibration mode of power controller 20 is closed and opens biography
Dynamic model formula moves to the mold 22 with mold base 21 and auxiliary mould 26 on pedestal 18, and be located at hydraulic stem 30 just under
Then side starts hydraulic controller 31, the elongation of hydraulic stem 30 is made to push pressure pad 27, until the bottom surface and mold 22 of pressure pad 27 push up
Face flushes,
E. sample take out: adjust hydraulic controller 31 make hydraulic stem 30 shrink go up, then successively remove auxiliary mould 26,
Connection ring 25 and mold base 21 in equating mold 22 after the both ends of the surface of sample, finally unscrew nut 24, open clip 23, tear open
Release sampling device takes out sample.
Embodiment 2
A. material is mixed: Polluted Soil, powdered cement and the water after sieving are stored respectively to storage tank 1, storage powder tank 2
In fluid reservoir 3, according to preset curing agent volume 20%, moisture content 30% and the amount of being used in mixed way 5400g, controlled by set
Device 17 adjusts flow valve A4, the flow velocity of flow valve B5 and flow valve C6 and time simultaneously, passes through silt soil, lime and water respectively
Discharge nozzle 7, flour extraction pipe 8 and outlet tube 9 flow into equal mixing device 11, and the total mixture stirred in advance is 6000g or so, and starting is stirred
Mixing blade 12 mixes each component uniformly,
B. mixture weighs: according to preset sample density 1.8g/cm3With specimen size (square sample: side length 10cm),
Calculate individual sample mixture weight (about 1800g), by collect 17 adjusting control valve 14 of hop controller uninterrupted and when
Between, mixture 1800g needed for weighing individual sample produces 3 Duplicate Samples,
C. the assembling of pressure-like device: first by the interior bottom of rigid plastics the mold base 21, (size are as follows: internal edges are long of mold 22
10cm, wall thickness 0.5cm) inner wall, the inner wall of auxiliary mould 26 and the bottom surface of pressure pad 27 smear lubricant respectively, mold 22 is
It being made of four petals, pressure pad 27 is the square of side length 10cm, mold base 21 is placed on the conveyer belt of transmission device 19,
22 bottom of mold is embedded in mold base 21, auxiliary mould 26 is placed on mold 22, by connection ring 25 by mold
22 and the fixation of auxiliary mould 26 be integral, and add clip 23 along 22 side of mold, mold 22 stablized by nut 24,
D. sample is suppressed: the mixture in graduated cylinder 15 is at the uniform velocity poured into pressure by the vibration mode for the controller 20 that turns on the power
In sampling device, pressure pad 27 is put to mixture top, after vibration uniformly, the vibration mode of power controller 20 is closed and opens biography
Dynamic model formula moves to the mold 22 with mold base 21 and auxiliary mould 26 on pedestal 18, and be located at hydraulic stem 30 just under
Then side starts hydraulic controller 31, the elongation of hydraulic stem 30 is made to push pressure pad 27, until the bottom surface and mold 22 of pressure pad 27 push up
Face flushes,
E. sample take out: adjust hydraulic controller 31 make hydraulic stem 30 shrink go up, then successively remove auxiliary mould 26,
Connection ring 25 and mold base 21 in equating mold 22 after the both ends of the surface of sample, finally unscrew nut 24, open clip 23, tear open
Release sampling device takes out sample.
Embodiment 3
A. material is mixed: sandstone, powdered cement and the water after sieving are stored respectively to storage tank 1, storage 2 and of powder tank
In fluid reservoir 3, according to the preset ratio of mud 0.8 and the amount of being used in mixed way 15000g, flow is adjusted by collection hop controller 17 simultaneously
Valve A4, the flow velocity of flow valve B5 and flow valve C6 and time make silt soil, lime and water pass through discharge nozzle 7, flour extraction pipe 8 respectively
It is flowed into equal mixing device 11 with outlet tube 9, the total mixture stirred in advance is 15000g or so, and starting stirring blade 12 makes each group
Divide uniformly mixing,
B. mixture weighs: according to preset sample density 2.5g/cm3With specimen size (cuboid sample: section side length
10cm, height 20cm), the mixture weight (about 5000g) of individual sample is calculated, by collecting 17 adjusting control valve 14 of hop controller
Uninterrupted and the time, weigh individual sample needed for mixture 5000g, produce 3 Duplicate Samples,
C. the assembling of pressure-like device: first by the interior bottom of irony the mold base 21, (size are as follows: inside dimension 10cm* of mold 22
20cm, wall thickness 0.5cm) inner wall, the inner wall of auxiliary mould 26 and the bottom surface of pressure pad 27 smear machine oil respectively, mold 22 be by
Four petals composition, pressure pad 27 are the rectangle of side length 10cm*20cm, and mold base 21 is placed on to the conveyer belt of transmission device 19
On, 22 bottom of mold is embedded in mold base 21, auxiliary mould 26 is placed on mold 22, by connection ring 25 by mould
Tool 22 and the fixation of auxiliary mould 26 are integral, and add clip 23 along 22 side of mold, stablize mold 22 by nut 24,
D. sample is suppressed: the mixture in graduated cylinder 15 is at the uniform velocity poured into pressure by the vibration mode for the controller 20 that turns on the power
In sampling device, pressure pad 27 is put to mixture top, after vibration uniformly, the vibration mode of power controller 20 is closed and opens biography
Dynamic model formula moves to the mold 22 with mold base 21 and auxiliary mould 26 on pedestal 18, and be located at hydraulic stem 30 just under
Then side starts hydraulic controller 31, the elongation of hydraulic stem 30 is made to push pressure pad 27, until the bottom surface and mold 22 of pressure pad 27 push up
Face flushes,
E. sample take out: adjust hydraulic controller 31 make hydraulic stem 30 shrink go up, then successively remove auxiliary mould 26,
Connection ring 25 and mold base 21 in equating mold 22 after the both ends of the surface of sample, finally unscrew nut 24, open clip 23, tear open
Release sampling device takes out sample.
The basic principles, main features and advantages of the present invention have been shown and described above.The technology of the industry
Personnel only illustrate the present invention it should be appreciated that the present invention is not limited by examples detailed above described in examples detailed above and specification
Principle, various changes and improvements may be made to the invention without departing from the spirit and scope of the present invention, these variation and
Improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention is by appended claims and its is equal
Object defines.
Claims (6)
1. a kind of sample producing device for unconfined compression test, which is characterized in that the device include: storage device,
Mixing device (11), metering device, pressure-like device and automatic control device,
The storage device includes storage tank (1), storage powder tank (2) and fluid reservoir (3), and the lower part of the storage tank (1) is equipped with stream
It measures valve A (4), the lower part of storage powder tank (2) is equipped with flow valve B (5), and the lower part of the fluid reservoir (3) is equipped with flow valve C (6),
The equal mixing device (11) includes feed inlet (10) and stirring blade (12), and feed inlet (10) is located at equal mixing device (11)
Top, the storage tank (1) are connected by discharge nozzle (7) with feed inlet (10), and discharge nozzle (7) is set under flow valve A (4)
Portion, the storage powder tank (2) are connected by flour extraction pipe (8) with feed inlet (10), and flour extraction pipe (8) is set to the lower part of flow valve B (5),
The fluid reservoir (3) is connected by outlet tube (9) with feed inlet (10), and outlet tube (9) is set to the lower part of flow valve C (6),
The metering device includes measuring tank (15) and electronic scale (16), and measuring tank (15) is placed on electronic scale (16), measuring tank (15)
Positioned at the underface of conveying pipeline (13) outlet, one end of conveying pipeline (13) is connected to the bottom of equal mixing device (11), conveying pipeline
(13) control valve (14) are equipped with,
The pressure-like device include pedestal (18), transmission device (19), mold base (21), mold (22), with nut (24)
Clip (23), connection ring (25), auxiliary mould (26), pressure pad (27), support column (28), crossbeam (29), hydraulic stem (30) and liquid
Pressure controller (31), the transmission device (19) and support column (28) are fixed on pedestal (18), in the transmission device (19)
It is installed on power controller (20), the conveyer belt upper surface of the transmission device (19) is flushed with the upper surface of pedestal (18), institute
Crossbeam (29) to be stated to be bolted on support column (28), the hydraulic stem (30) is fixed under crossbeam (29),
The automatic control device includes collection hop controller (17) and data collector (32), the flow valve A (4), flow
Valve B (5), flow valve C (6), control valve (14), electronic scale (16), power controller (20) and hydraulic controller (31) lead to respectively
Data line is crossed to be connected on collection hop controller (17).
2. a kind of sample producing device for unconfined compression test according to claim 1, which is characterized in that described
Mold (22) is identical with the cross sectional shape and size of auxiliary mould (26), can be round, square, rectangle or polygon
Shape, the vertical height of auxiliary mould (26) can be equal to or more than the vertical height of mold (22), mold (22) bottom
Outer diameter is consistent with the internal diameter of mold base (21), and the mold (22) is metal material or rigid plastics, and mold (22) can be
It is monomer, bivalve or three valves.
3. a kind of sample producing device for unconfined compression test according to claim 1, which is characterized in that described
Clip (23) is installed in the outer surface of mold (22), and clip (23) quantity is determined according to the quantity of mold (22), Ke Yiwei
Zero, one, it is two or more, the connection ring (25) can be fixed on auxiliary mould (26) bottom, connection ring (25) it is interior
Diameter is consistent with the outer diameter of mold (22).
4. a kind of sample producing device for unconfined compression test according to claim 1, which is characterized in that described
Transmission device (19) also has vibrating function other than transmitting function.
5. a kind of sample production method for unconfined compression test, characterized in that it comprises the following steps:
A. material is mixed: by treated, raw material, curing agent and water are stored respectively to storage tank (1), storage powder tank (2) and liquid storage
In tank (3), according to preset curing agent volume, moisture content and the amount of being used in mixed way, stream is adjusted by collection hop controller (17) simultaneously
Flow velocity and the time for measuring valve A (4), flow valve B (5) and flow valve C (6), raw material, curing agent and water is made to pass through discharge nozzle respectively
(7), flour extraction pipe (8) and outlet tube (9) flow into equal mixing device (11), and starting stirring blade (12) mixes each component uniformly
It closes,
B. mixture weighs: according to preset sample density and specimen size, calculating the mixture weight of individual sample, passes through collection
The uninterrupted of hop controller (17) adjusting control valve (14) and time, mixture needed for weighing individual sample,
C. the assembling of pressure-like device: first by the interior bottom of mold base (21), the inner wall of mold (22), auxiliary mould (26) inner wall
Lubricant or vaseline are smeared respectively with the bottom surface of pressure pad (27), and mold base (21) is placed on to the biography of transmission device (19)
It send and takes, mold (22) bottom is embedded in mold base (21), auxiliary mould (26) is placed on mold (22), is passed through
Mold (22) and auxiliary mould (26) fixation are integral by connection ring (25), and add clip (23) along mold (22) side,
Stablize mold (22) by nut (24),
D. sample is suppressed: the mixture in graduated cylinder (15) is at the uniform velocity poured into pressure by the vibration mode of the controller that turns on the power (20)
In sampling device, pressure pad (27) is put to mixture top, after vibration uniformly, the vibration mode of power controller (20) is closed and opens
Transmission mode is opened, moves to the mold (22) with mold base (21) and auxiliary mould (26) on pedestal (18), and be located at liquid
The underface of compression bar (30) then starts hydraulic controller (31), so that hydraulic stem (30) elongation is pushed pressure pad (27), until pressure pad
(27) bottom surface is flushed with mold (22) top surface,
E. sample takes out: adjusting hydraulic controller (31) makes hydraulic stem (30) to shrink, and then successively removes auxiliary mould
(26), connection ring (25) and mold base (21), in equating mold (22) after the both ends of the surface of sample, finally unscrew nut (24),
It opens clip (23), dismantles pressure-like device, take out sample.
6. a kind of sample production method for unconfined compression test according to claim 5, which is characterized in that described
Raw material can be soil, the Polluted Soil for soil test, or the mortar of concrete test and the mixture of stone.
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