CN108398542A - Atterberg Limit measurement device and Atterberg Limit sensing equipment - Google Patents
Atterberg Limit measurement device and Atterberg Limit sensing equipment Download PDFInfo
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- CN108398542A CN108398542A CN201810249363.7A CN201810249363A CN108398542A CN 108398542 A CN108398542 A CN 108398542A CN 201810249363 A CN201810249363 A CN 201810249363A CN 108398542 A CN108398542 A CN 108398542A
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- 238000005259 measurement Methods 0.000 title claims abstract description 47
- 239000002689 soil Substances 0.000 claims abstract description 68
- 238000003756 stirring Methods 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims description 60
- 238000006073 displacement reaction Methods 0.000 claims description 21
- 230000003028 elevating effect Effects 0.000 claims description 20
- 239000007788 liquid Substances 0.000 claims description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000010008 shearing Methods 0.000 claims description 13
- 230000035515 penetration Effects 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000008278 dynamic mechanism Effects 0.000 claims 1
- 239000012530 fluid Substances 0.000 claims 1
- 238000012360 testing method Methods 0.000 abstract description 15
- 238000000034 method Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 241000283216 Phocidae Species 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004448 titration Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
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- G—PHYSICS
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Abstract
The present invention provides a kind of Atterberg Limit measurement device and Atterberg Limit sensing equipments, are related to the technical field of soil surveying equipment.Atterberg Limit measurement device includes blender, specimen cup, mounting table and pressure sensitive portion；Soil sample sample is placed in specimen cup, one end of specimen cup is placed in the one side of mounting table, the another side connection of pressure sensitive portion and mounting table；One end of blender and the other end of specimen cup are oppositely arranged, blender can be moved relative to specimen cup, the soil sample sample in specimen cup is stirred or be sheared, blender includes agitating shaft and stirring blade, one end of agitating shaft and one end of stirring blade connect, the other end of stirring blade and the other end of specimen cup are oppositely arranged, and stirring blade is arranged close to the side of soil sample sample horizontal by inclination angle theta.It solves and tests inaccurate technical problem in the prior art.The blender of the present invention and pressure sensitive portion, avoid artificial participation, test result is accurate.
Description
Technical field
The present invention relates to the technical fields of soil surveying equipment, more particularly, to a kind of Atterberg Limit measurement device and Atterberg Limit
Sensing equipment.
Background technology
Fine grained soil is respectively at flow regime, plastic state, semi-solid state and solid-like due to the difference of moisture content
State.Liquid limit is the upper limit moisture content that fine grained soil is in plastic state, and plastic limit is the lower limit moisture content that fine grained soil is in plastic state.Particulate
Soil Atterberg Limit index be the most basic index classified to it and named, in geotechnical engineering, Atterberg Limit index it is accurate
Property be related to the correctness that soil names, while influencing the determination of soil sample state, and then influence the determination of the bearing capacity of soil, correctly
Ground determines that the Atterberg Limit index of soil has very important significance to engineering tool.
The existing Atterberg Limit index for measuring soil is measured using digital display liquid plastic combine tester, in use, pressing
Cone penetration is that three kinds of situations of 3~4mm, 7~9mm and 15~17mm prepare three soil samples, after fully adjusting uniformly, is packed into
In sample cup for liquid, the circular cone embedded depth after cone method measures 5s respectively is fallen using electromagnetism later, and measure moisture content simultaneously.Then root
According to these measuring points, circular cone embedded depth and moisture content relationship straight line are drawn on log-log coordinate.When acquiring 2mm on straight line pair
Corresponding moisture content is plastic limit WP, it is 10mm liquid limits W that when 10mm, which corresponds to moisture content,L10, it is liquid limit W that when 17mm, which corresponds to moisture content,Ll7.Two
Kind liquid limit coordinates corresponding diagram of forgeability behaviour and codes and standards to be applied to carry out category name to fine grained soil, is the survey of particulate soil classification
Surely it provides a convenient.
But existing measurement device needs the whereabouts of manual operation circular cone in titration, it cannot be guaranteed that conical surface is clear
Whether the modulation of clean property, soil sample uniformly can not also ensure, there are artificial intervention, influence calibration as a result, error is larger, and
Entire test process is time-consuming and laborious, and the stability and accuracy of measurement result are also difficult to control.
Invention content
It is existing in the prior art to solve the purpose of the present invention is to provide a kind of Atterberg Limit measurement device, it is existing
Measurement device needs the whereabouts of manual operation circular cone in titration, it cannot be guaranteed that the modulation of the spatter property of conical surface, soil sample is
No uniformly also to ensure, there are artificial intervention, influence calibration as a result, the larger technical problem of error.
It is existing in the prior art to solve the present invention also provides a kind of Atterberg Limit sensing equipment, existing measurement dress
Set the technical problem for being inconvenient to move.
A kind of Atterberg Limit measurement device provided by the invention, including blender, specimen cup, mounting table and pressure sensitive portion；
For placing soil sample sample to be tested in the specimen cup, one end of the specimen cup is placed on the mounting table
One side on, the pressure sensitive portion is connect with the another side of the mounting table, and the pressure sensitive portion is for measuring the sample
Pressure suffered by product cup；
One end of the blender and the other end of specimen cup are oppositely arranged, and the blender can be relative to the sample
Product cup moves, and the soil sample sample in the specimen cup is stirred or be sheared, the blender includes agitating shaft and stirs
Blade is mixed, one end of the agitating shaft is connect with one end of the stirring blade, the other end and specimen cup of the stirring blade
The other end be oppositely arranged, the stirring blade close to the side of soil sample sample horizontal by inclination angle theta be arranged.
Further, the blender further includes holder, elevating mechanism and rotary drive mechanism；
One end of the rotary drive mechanism is fixedly connected with holder, the other end and agitating shaft of the rotary drive mechanism
Other end connection so that the stirring blade carries out soil sample sample to be tested under the drive of the rotary drive mechanism
Stirring or shearing；The elevating mechanism is connect with the holder, so that drive lower edge of the blender in the elevating mechanism
Vertical direction moves.
Further, the mounting table includes stress support and pallet；
The pallet is circle, and the specimen cup is cylindrical type, and the stress support is fixed on the feeling of stress on one side
Answer on the stress point in portion, the one side of the pallet is fixedly connected with the another side of the stress support, the center of the pallet with
The axis of the stress support overlaps, and the specimen cup is connect with the another side of the pallet, the center line of the specimen cup and
The axis of stress support overlaps, while being overlapped again with the axis of the agitating shaft.
Further, the pressure sensitive portion includes multiple pressure sensors；
Multiple pressure sensors are uniformly arranged along the tangential direction of circle, and the stress point of the pressure sensor is distributed in
On circumference, and the center of circle is overlapped with the axis of the stress support.
Further, further include control unit, data acquisition unit and control terminal；
The data acquisition unit is connect with control unit, and described control unit is connect with elevating mechanism, and the control is single
Member is connect with rotary drive mechanism, the data acquisition unit and stirring axis connection, to acquire the agitating shaft vertically
Displacement information, when displacement information reaches preset shift value, described control unit controls the elevating mechanism and the rotation
Turn driving mechanism movement, so that the agitating shaft is under the drive of the elevating mechanism and the rotary drive mechanism, to sample
Soil sample sample in cup is stirred or shears；
The data acquisition unit is connect with pressure sensitive portion, to acquire the pressure value in the specimen cup, the control
Terminal is connect with described control unit, to control unlatching and the closure of described control unit；The control terminal and the data
Collecting unit connects, and the control terminal receives the data that the data acquisition unit is acquired, and according to the fortune of control terminal
It calculates program and obtains the moisture content of sample and the double-log relationship straight line of corresponding cone penetration.
Further, the specimen cup includes the cup lid for preventing soil sample sample from leaking；
The cup lid be equipped with so that the agitating shaft by through-hole.
Further, the cup lid includes cover unit, and the quantity of the cover unit is two, two lid lists
Member is oppositely arranged；
The cover unit includes lid and lid driving portion, and the lid driving portion is connect with lid, and the lid drives
Dynamic portion is connect with described control unit, and the lid driving portion is connect with data acquisition unit, the data acquisition unit acquisition
The displacement information of the agitating shaft vertically, when institute's displacement information reaches preset displacement information, the data are adopted
Collect unit and send institute's displacement signal to described control unit, described control unit controls the lid driving portion and drives two lids
Body is closed, to close the specimen cup.
Further, the lid is equipped with the inductor for whether being in closed state of two lids of induction.
Further, further include into specimen cup plus the micro-flow liquid control unit of water；
The micro-flow liquid control unit includes pump head, delivery pipe and driving mechanism；
The driving mechanism is connect with control unit, and the driving mechanism is connect with pump head, one end of the delivery pipe with
The pump head connection, the other end of the delivery pipe is connected to the specimen cup, so that the driving mechanism is single in the control
It controls the pump head under the control of member to start, so that the water of delivery pipe is entered along the agitating shaft in the specimen cup.
The present invention also provides a kind of Atterberg Limit sensing equipments, including idler wheel and Atterberg Limit measurement device as described above；
The idler wheel is connected on the end face that the Atterberg Limit measurement device is contacted with ground.
Atterberg Limit measurement device provided by the invention, the specimen cup is interior for placing soil sample sample to be tested, convenient
Test to soil sample；The bottom end of the specimen cup is placed on the upper surface of mounting table, the pressure sensitive portion and the mounting table
Bottom surface connects, to measure the pressure value in the specimen cup；The lower end of the blender and the upper end of specimen cup are oppositely arranged, institute
Stating blender can move relative to the specimen cup, and the stirring blade is connect with the lower end of the agitating shaft, is stirred when described
Blade is mixed to balance each other completely into the vertical component of shearing force in soil sample sample and when static and the pressure F suffered by specimen cup,
It is the vertical component suffered by soil sample sample, the bottom face and horizontal plane of the stirring blade to measure the pressure F that specimen cup is subject to
Inclination angle be θ, according to formulaWherein S is the surface area of stirring blade, calculates the shearing strength τ of soil sample, it
Afterwards according to formulaWhereinWherein τ is shearing strength, and α is circular cone drift angle, and P is
Circular cone weight, h are cone penetration, obtain the submergence depth h of circular cone；Specifically, when in use, phase to be measured is first prepared
The different moisture content of identical soil sample are realized with three parts of samples of soil sample different water cut or by way of constantly adding water
Three kinds of states, then three parts of samples or the shearing strength τ of three kinds of states are measured respectively, and then obtain corresponding cone penetration h；
Later, the moisture content W measured respectively under three parts of samples or three kinds of states is drawn according to the numerical value of moisture content W and submergence depth h
The moisture content W and corresponding cone penetration h of unearthed all product draw double-log relationship straight line, determine with the soil sample measured
Liquid limit value and plastic limit value, avoid artificial participation during measurement, improve measurement accuracy.
Atterberg Limit sensing equipment provided by the invention, the idler wheel are connected to the bottom face of the Atterberg Limit measurement device
On, facilitate the carrying realized to Atterberg Limit measurement device, it is easy to use.
Description of the drawings
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, in being described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, other drawings may also be obtained based on these drawings.
Fig. 1 is the structural schematic diagram of the first state of Atterberg Limit measurement device provided in an embodiment of the present invention；
Fig. 2 is the partial enlarged view of part A in Fig. 1；
Fig. 3 is the structural schematic diagram of second of state of Atterberg Limit measurement device provided in an embodiment of the present invention；
Fig. 4 is the structural representation of the stirring blade and stirring axis connection of Atterberg Limit measurement device provided in an embodiment of the present invention
Figure；
Fig. 5 is the structural schematic diagram in the pressure sensitive portion of Atterberg Limit measurement device provided in an embodiment of the present invention.
Icon：100- blenders；200- specimen cups；300- mounting tables；400- pressure sensitives portion；500- control terminals；
600- micro-flow liquid control units；101- agitating shafts；102- stirring blades；103- holders；104- elevating mechanisms；105- rotates
Driving mechanism；201- lids；202- lid driving portions；301- stress supports；302- pallets；401- pressure sensors；601- is pumped
Head；602- delivery pipes.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
The every other embodiment that personnel are obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that such as occur term "center", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "vertical", "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings,
Be merely for convenience of description of the present invention and simplification of the description, do not indicate or imply the indicated device or element must have it is specific
Orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, such as there is term "
One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " peace such as occur
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition
The concrete meaning of language in the present invention.
The present invention provides a kind of Atterberg Limit measurement device, the Atterberg Limit measurement device includes blender 100, specimen cup
200, mounting table 300 and pressure sensitive portion 400；For placing soil sample sample to be tested, the sample in the specimen cup 200
One end of product cup 200 is placed in the one side of the mounting table 300, and the pressure sensitive portion 400 is another with the mounting table 300
It connects on one side, the pressure sensitive portion 400 is used to measure the pressure suffered by the specimen cup 200；The one of the blender 100
The other end with specimen cup 200 is held to be oppositely arranged, and the blender 100 can be moved relative to the specimen cup 200, with right
Soil sample sample in the specimen cup 200 is stirred or shears, and the blender 100 includes agitating shaft 101 and stirring
Blade 102, one end of the agitating shaft 101 are connect with one end of the stirring blade 102, the stirring blade 102 it is another
The other end with specimen cup 200 is held to be oppositely arranged, the stirring blade 102 is close to the side of soil sample sample horizontal by inclination angle
θ is arranged.
As shown in Figs 1-4, the bottom end of the specimen cup 200 is placed on the upper surface of described mounting table 300, the feeling of stress
Portion 400 and the bottom face of the mounting table 300 is answered to connect, the upper end phase of the bottom end of the blender 100 and the specimen cup 200
To setting, and the blender 100 can be moved along the specimen cup 200, the stirring blade 102 and the agitating shaft 101
Lower end connection, the lower face of the stirring blade 102 and the inclination angle of horizontal plane are in θ settings.In use, soil sample sample is placed
It is placed on mounting table 300 inside specimen cup 200, then by the specimen cup 200 for filling soil sample sample, it is right using blender 100
Soil sample sample is sheared and is stirred, and the lower surface of the stirring blade 102 is smooth, surface area is certain and has centainly with horizontal plane
Tiltangleθ, when stirring blade 102 shears soil sample sample, the soil body shear component upward to stirring blade 102 is with connecing
Contacting surface product increase and increase, when stirring blade 102 completely into the soil body and it is static when shearing force vertical component and pressure F phases
Balance, it follows that the value of the pressure detected according to pressure sensitive portion 400 is the vertical component of shearing force, shearing resistance is strong as a result,
DegreeWherein S is the surface area of stirring blade 102, you can is obtained；Later according to formula
Wherein,Wherein τ is shearing strength, and α is circular cone drift angle, and P is circular cone weight, and h is cone penetration,
The submergence depth h for obtaining corresponding circular cone passes through the equivalent measurement to h, the different sample or of the same race of three parts of water content of test
The state of three kinds of different moisture contents of sample draws out the moisture content W of soil sample sample according to the numerical value of moisture content W and submergence depth h
Double-log relationship straight line is drawn with corresponding cone penetration h, determines liquid limit value and plastic limit value with the soil sample measured, is surveyed
Artificial participation is avoided during amount, improves measurement accuracy.
Further, the blender 100 further includes holder 103, elevating mechanism 104 and rotary drive mechanism 105；It is described
One end of rotary drive mechanism 105 is fixedly connected with holder 103, the other end and the agitating shaft 101 of the rotary drive mechanism 105
The other end connection so that the stirring blade 102 under the drive of the rotary drive mechanism 105 to soil sample sample to be tested
Product are stirred or shear；The elevating mechanism 104 is connect with the holder 103, so that the blender 100 is in the lifting
It is vertically moved under the drive of mechanism 104.
As shown in figures 1 and 3, the upper end of the rotary drive mechanism 105 is fixedly connected with holder 103, and the rotation is driven
The lower end of motivation structure 105 is connect with the upper end of agitating shaft 101, and the elevating mechanism 104 is connect with holder 103；In the present embodiment,
The rotary drive mechanism 105 includes first motor and the first driving section, and the first motor is connect with the upper end of holder 103,
The output shaft of the first motor is connect with the input terminal of the first driving section, output end and the stirring of first driving section
Axis 101 connects, and the first driving section drives the agitating shaft 101 to rotate under the drive of first motor, realizes the rotation of agitating shaft 101
Turn, realize the stirring and shearing to soil sample sample, wherein first driving section is that gear drive or sprocket wheel are driven；It is described
Elevating mechanism 104 includes the second motor, the second driving section and leading screw, the output end of second motor and second driving section
Input terminal connection, the output end of second driving section connect with leading screw, the bottom end of the leading screw across the holder 103 and
The agitating shaft 101 contacts, and the output end of second driving section is connect with the holder 103, and second driving section is in institute
It under the drive for stating the second motor, is moved in the vertical direction along leading screw so that holder 103 and rotary drive mechanism 105 are along silk
Thick stick moves in the vertical direction, realizes that stirring blade 102 is comprehensive to soil sample sample and tamps, stirs and shear, and described second
Driving section is that gear drive or sprocket wheel are driven.
Further, the mounting table 300 includes stress support 301 and pallet 302；The pallet 302 is circle, described
Specimen cup 200 is cylindrical type, and being fixed on one side on the stress point in the pressure sensitive portion 400 for the stress support 301 is described
The one side of pallet 302 is fixedly connected with the another side of the stress support 301, the center of the pallet 302 and the stress branch
The axis of frame 301 overlaps, and the specimen cup 200 is connect with the another side of the pallet 302, the center line of the specimen cup 200
It overlaps with the axis of stress support 301, while being overlapped again with the axis of the agitating shaft 101.
As shown in Figure 1-Figure 3, the bottom surface of the stress support 301 is fixed on the stress point in the pressure sensitive portion 400,
The upper surface of the bottom surface of the pallet 302 and described stress support 301 are fixedly connected, and the upper surface of described pallet 302 is placed with sample
Cup 200, the center of pallet 302 is overlapped with the axis of stress support 301, center line and the stress support 301 of specimen cup 200
Axis overlaps, and the pallet 302 is circle, and the specimen cup 200 is cylindrical type, such setting so that pressure sensitive portion
All on the same line, measurement error is small, improves measurement accuracy for 400 side force point.
Further, the pressure sensitive portion 400 includes multiple pressure sensors 401；Multiple pressure sensors 401
Tangential direction along circle uniformly arranges, the distribution of the stress point of the pressure sensor 401 circumferentially, and the center of circle with it is described by
The axis of power holder 301 overlaps.
As shown in figure 5, three pressure sensors 401 are uniformly arranged along round tangential direction so that the pressure in specimen cup 200
Power concentrates on the center in pressure sensitive portion 400 so that measurement error is small, improves measurement accuracy.
Further, further include control unit, data acquisition unit and control terminal 500；The data acquisition unit with
Control unit connects, and described control unit is connect with elevating mechanism 104, and described control unit is connect with rotary drive mechanism 105,
The data acquisition unit is connect with agitating shaft 101, to acquire the displacement information of the agitating shaft 101 vertically, works as position
When shifting information reaches preset shift value, described control unit controls the elevating mechanism 104 and the rotary drive mechanism 105
Movement, so that the agitating shaft 101 is under the drive of the elevating mechanism 104 and the rotary drive mechanism 105, to sample
Soil sample sample in cup 200 is stirred or shears；The data acquisition unit is connect with pressure sensitive portion 400, with acquisition
Pressure value in the specimen cup 200, the control terminal 500 are connect with described control unit, to control described control unit
Unlatching and closure；The control terminal 500 is connect with the data acquisition unit, and the control terminal 500 receives the number
The data acquired according to collecting unit, and the moisture content of sample and corresponding circle are obtained according to the operation program of control terminal 500
Bore the double-log relationship straight line of submergence depth.
The data acquisition unit is connect with agitating shaft 101, acquires the displacement information of agitating shaft 101, sets agitating shaft 101
The displacement of agitating shaft 101 when the stirring blade 102 of lower end is all introduced into the specimen cup 200 is preset displacement amount, when
When stirring blade 102 is all introduced into specimen cup 200, the location information of the data acquisition unit acquisition agitating shaft 101, and will
Location information is sent to control unit, and control unit control first motor and the second motor start simultaneously, realize 101 edge of agitating shaft
Vertical direction moves down, and is tamped to soil sample sample, while realizing the rotation of agitating shaft 101, realizes the stirring to soil sample sample
And shearing, test of many times is carried out using the state of identical soil sample sample different water cut, obtains test result；The data are adopted
Collection unit is connect with the pressure sensitive portion 400, and the pressure value that the pressure sensitive portion 400 acquires is transported to control terminal 500,
Pressure value F is provided for subsequent calculating, the submergence depth h of circular cone is obtained using the operation of control terminal 500, and then draw out
The double-log relationship straight line of circular cone depth h and corresponding moisture content, and when 2mm is acquired according to this relationship straight line be to corresponding moisture content
Plastic limit WP, it is 10mm liquid limits W that when 10mm, which corresponds to moisture content,L10, it is liquid limit W that when 17mm, which corresponds to moisture content,Ll7.The control terminal
500 be computer, and every equipment has it to fix and unique address code；It is connected on data collector by communication line, data
Collector is connect with computer end again, and such computer can be communicated with multiple devices simultaneously；The operation of every equipment
State, data can be automatically uploaded to computer end, and do not need that operating personnel repeat copies data, when battery of tests data are complete
After whole, after being simply provided by respective requirement, automatically generate test report and print, historical data can also be very convenient
Inquiry in the database.
Further, the specimen cup 200 includes the cup lid for preventing soil sample sample from leaking；The cup lid, which is equipped with, to be made
The agitating shaft 101 by through-hole.
As shown in figure 3, it includes cup lid that the upper surface of described specimen cup 200 is upper, the cup lid is for blocking the specimen cup
200, it prevents the soil sample sample in specimen cup 200 from revealing, ensures the integrality of the soil sample sample in test process.
It should be noted that the cup lid can be to be flexibly connected, or be fixedly connected with specimen cup 200, as long as cup
Cover equipped with can make agitating shaft 101 by through-hole.
Further, the cup lid includes cover unit, and the quantity of the cover unit is two, two lid lists
Member is oppositely arranged；The cover unit includes lid 201 and lid driving portion 202, the lid driving portion 202 and lid 201
Connection, the lid driving portion 202 are connect with described control unit, and the lid driving portion 202 connects with data acquisition unit
It connects, the data acquisition unit acquires the displacement information of the agitating shaft 101 vertically, when institute's displacement information reaches pre-
If displacement information when, the data acquisition unit sends institute's displacement signal to described control unit, described control unit control
Making the lid driving portion 202 drives two lids 201 to be closed, to close the specimen cup 200.
As shown in Figure 1-Figure 3, the lid driving portion 202 is cylinder, and the lid driving portion 202 connects with control unit
It connects, when the stirring blade 102 is completely into in the specimen cup 200, the data acquisition unit is by agitating shaft 101
Displacement information pass to described control unit, control unit controls cylinder and starts, and realizes the closure of two lids 201；It is described
Cylinder is swing clamp cylinder, and after swing clamp cylinder receives the enabling signal of control unit, swing clamp cylinder controls two lids first
201 rotations, after two lids 201 are rotated in place, swing clamp cylinder controls two lids 201 and moves vertically downwards,
Two lids 201 of control are moved to the upside of specimen cup 200, cover specimen cup 200, ensure the tightness of test process.It uses
Cylinder controls, and control is more convenient, and displacement is accurate, facilitates control.After stirring blade 102 enters specimen cup 200, lid 201
It is automatically closed, when such stirring blade 102 is run in specimen cup 200, sample will not be caused to reveal, when a test period
After the completion, lid 201 automatically opens, and blender 100 rises automatically, and operating personnel need to only remove vessel, acquire a small amount of sample
And clear up remnants.
Further, the lid 201 is equipped with the inductor for whether being in closed state of two lids 201 of induction.
The lid 201 is equipped with inductor, and whether inductor two lids 201 of induction are in closed state, if
In closed state, inductor transmits a signal to control unit, and control unit controls the work of swing clamp cylinder, it is known that two lids
Until 201 are in closed state, setting inductor ensures the seal of whole operation process, ensures the tight of specimen cup 200
Property, ensure the controllability of operating process.
Further, further include into specimen cup 200 plus the micro-flow liquid control unit 600 of water；The micro-flow liquid
Control unit 600 includes pump head 601, delivery pipe 602 and driving mechanism；The driving mechanism is connect with control unit, the driving
Mechanism is connect with pump head 601, and one end of the delivery pipe 602 is connected to the pump head 601, the other end of the delivery pipe 602
It is connected to the specimen cup 200, so that the driving mechanism controls the pump head 601 under the control of described control unit and opens
It is dynamic, so that the water of delivery pipe 602 is entered along the agitating shaft 101 in the specimen cup 200.
As shown in figures 1 and 3, the driving mechanism is third motor, and the third motor is connect with control unit, described
Third motor is connected to pump head 601, and the left end of the delivery pipe 602 is connected to pump head 601, the right end of the delivery pipe 602 with
Specimen cup 200 is connected to, and in the present embodiment, the lid 201 includes upper cover body and lower cover, is equipped between upper cover body and lower cover
The right end of intercommunicating pore, the delivery pipe 602 is connected to across the lid 201 with specimen cup 200, when blender 100 runs to one
After fixing time or running to a distance, when needing to measure the moisture content of three points of same sample difference submergence depth, need
To be that soil sample sample supplements water content, control unit controls third electric motor starting at this time so that the water of delivery pipe 602 stirs described in
It mixes axis 101 to enter in the specimen cup 200, flow is imported along agitating shaft 101, the centrifugal force when stirring blade 102 rotates
Under effect, water can be evenly dispersed in sample, avoid causing the feelings that center moisture content is high and periphery moisture content is low
Condition has ensured the uniformity of sample modulation.
Specifically when using Atterberg Limit measurement device, the soil sample sample measured will be needed to be placed on specimen cup 200 first
In, specimen cup 200 is placed on mounting table 300 later, starts control terminal 500 so that control unit controls elevating mechanism
104 drive rotary drive mechanisms 105 and agitating shaft 101 move vertically downwards, when the stirring blade 102 completely into
When entering into the specimen cup 200, described control unit control the lid driving portion 202 drive the rotation of the lid 201 and
Descending motion, realization seal specimen cup 200；When the sensor in lid 201 detects that two lids 201 are closed completely,
Described control unit is again started up first motor and the second motor, while realizing the rotation of agitating shaft 101 and move down into
Row, is completely tamped and is sheared to the soil sample sample in specimen cup 200, when stirring blade 102 is completely into soil sample sample
And the vertical component of shearing force balances each other with pressure F when static, pressure sensitive portion 400 at this time can be by pressure F transmission at this time
To the control terminal 500, control terminal 500 gets off data record；When a kind of test of the soil sample sample of water content of completion
Later, the third electric motor starting of control unit control micro-flow liquid control unit 600 so that the flow of delivery pipe 602 flows into sample
In product cup 200, according to specifically needing amount of water, input in control terminal 500, controlled by program, add water number, when
When water being added to reach setting value, control unit control third motor is stopped, and carries out to the soil sample under second of moisture content state
The test of the pressure of sample, specific steps as measured for the first time；It is repeating the above steps, is realizing that third time measures, realize to three
The measurement of the pressure of the soil sample sample of kind different moisture content and record, the sinking of circular cone is obtained using the operation of control terminal 500
Depth h, and then the double-log relationship straight line of circular cone depth h and corresponding moisture content are drawn out, and acquired according to this relationship straight line
It is plastic limit W to corresponding moisture content when 2mmP, it is 10mm liquid limits W that when 10mm, which corresponds to moisture content,L10, it is liquid that when 17mm, which corresponds to moisture content,
Limit WLl7。
When measuring moisture content, is begun through from low-water-content and constantly add water thirdly finishing until high-moisture percentage, often
A increased water of point can all have detailed record, and when experiment is finished, two samples of thirdly acquisition on high-moisture percentage carry out
Drying operation obtains moisture content and each point then according to moisture content W=(wet soil weight-dry ground weight)/(dry ground weight)
On amount of water value, so that it may accurately to calculate the moisture content of other two points, entire calculating process is all that system is automatic
It generates, testing crew is only needed by the weighing data input of two samples, since whole process is all in closed vessel
It carries out, so the problem of being revealed there is no sample and moisture, provides convenience to measure Atterberg Limit.
The present invention also provides a kind of Atterberg Limit sensing equipment, the Atterberg Limit sensing equipment include idler wheel and as described above
Atterberg Limit measurement device；The idler wheel is connected on the end face that the Atterberg Limit measurement device is contacted with ground.
Atterberg Limit sensing equipment provided by the invention, the idler wheel are connected to the bottom face of the Atterberg Limit measurement device
On, facilitate the carrying realized to Atterberg Limit measurement device, it is easy to use.
Finally it should be noted that：The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, it will be understood by those of ordinary skill in the art that：Its according to
So can with technical scheme described in the above embodiments is modified, either to which part or all technical features into
Row equivalent replacement；And these modifications or replacements, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of Atterberg Limit measurement device, which is characterized in that including blender, specimen cup, mounting table and pressure sensitive portion；
For placing soil sample sample to be tested in the specimen cup, one end of the specimen cup is placed on the one of the mounting table
On face, the pressure sensitive portion is connect with the another side of the mounting table, and the pressure sensitive portion is for measuring the specimen cup
Suffered pressure；
One end of the blender and the other end of specimen cup are oppositely arranged, and the blender can be relative to the specimen cup
Movement, the soil sample sample in the specimen cup is stirred or be sheared, the blender includes agitating shaft and paddle
Piece, one end of the agitating shaft are connect with one end of the stirring blade, the other end of the stirring blade and specimen cup it is another
One end is oppositely arranged, and the stirring blade is arranged close to the side of soil sample sample horizontal by inclination angle theta.
2. Atterberg Limit measurement device according to claim 1, which is characterized in that the blender further includes holder, lifting
Mechanism and rotary drive mechanism；
One end of the rotary drive mechanism is fixedly connected with holder, the other end of the rotary drive mechanism and agitating shaft it is another
One end connects, so that the stirring blade is stirred soil sample sample to be tested under the drive of the rotary drive mechanism
Or shearing；The elevating mechanism is connect with the holder, so that the blender is vertical in the drive lower edge of the elevating mechanism
It moves in direction.
3. Atterberg Limit measurement device according to claim 1, which is characterized in that the mounting table includes stress support and support
Disk；
The pallet is circle, and the specimen cup is cylindrical type, and the stress support is fixed on the pressure sensitive portion on one side
Stress point on, the one side of the pallet is fixedly connected with the another side of the stress support, the center of the pallet with it is described
The axis of stress support overlaps, and the specimen cup is connect with the another side of the pallet, the center line and stress of the specimen cup
The axis of holder overlaps, while being overlapped again with the axis of the agitating shaft.
4. Atterberg Limit measurement device according to claim 3, which is characterized in that the pressure sensitive portion includes multiple pressure
Sensor；
Multiple pressure sensors are uniformly arranged along the tangential direction of circle, and the stress point of the pressure sensor is distributed in circumference
On, and the center of circle is overlapped with the axis of the stress support.
5. Atterberg Limit measurement device according to claim 4, which is characterized in that further include control unit, data acquisition list
Member and control terminal；
The data acquisition unit is connect with control unit, and described control unit is connect with elevating mechanism, described control unit with
Rotary drive mechanism connects, the data acquisition unit and stirring axis connection, to acquire the position of the agitating shaft vertically
Information is moved, when displacement information reaches preset shift value, described control unit controls the elevating mechanism and driven with the rotation
Dynamic mechanism kinematic, so that the agitating shaft is under the drive of the elevating mechanism and the rotary drive mechanism, in specimen cup
Soil sample sample be stirred or shear；
The data acquisition unit is connect with pressure sensitive portion, to acquire the pressure value in the specimen cup, the control terminal
It is connect with described control unit, to control unlatching and the closure of described control unit；The control terminal is acquired with the data
Unit connects, and the control terminal receives the data that the data acquisition unit is acquired, and according to the operation journey of control terminal
Sequence obtains the moisture content of sample and the double-log relationship straight line of corresponding cone penetration.
6. Atterberg Limit measurement device according to claim 5, which is characterized in that the specimen cup includes for preventing soil sample
The cup lid that sample leaks；
The cup lid be equipped with so that the agitating shaft by through-hole.
7. Atterberg Limit measurement device according to claim 6, which is characterized in that the cup lid includes cover unit, described
The quantity of cover unit is two, and two cover units are oppositely arranged；
The cover unit includes lid and lid driving portion, and the lid driving portion is connect with lid, the lid driving portion
It is connect with described control unit, the lid driving portion is connect with data acquisition unit, described in the data acquisition unit acquisition
The displacement information of agitating shaft vertically, when institute's displacement information reaches preset displacement information, the data acquisition is single
Member sends institute's displacement signal to described control unit, and described control unit controls the lid driving portion and two lids is driven to close
It closes, to close the specimen cup.
8. Atterberg Limit measurement device according to claim 7, which is characterized in that the lid is equipped with two lids of induction
Whether be in closed state inductor.
9. Atterberg Limit measurement device according to claim 1, which is characterized in that further include into specimen cup plus the miniflow of water
Quantity of fluid control unit；
The micro-flow liquid control unit includes Wriggling Pump Head, delivery pipe and driving mechanism；
The driving mechanism is connect with control unit, and the driving mechanism is connect with Wriggling Pump Head, one end of the delivery pipe with
The Wriggling Pump Head connection, the other end of the delivery pipe is connected to the specimen cup, so that the driving mechanism is in the control
It controls the Wriggling Pump Head under the control of unit processed to start, so that the water of delivery pipe enters the specimen cup along the agitating shaft
In.
10. a kind of Atterberg Limit sensing equipment, which is characterized in that including idler wheel and liquid as claimed in any one of claims 1-9 wherein
Plastic limit measurement device；
The idler wheel is connected on the end face that the Atterberg Limit measurement device is contacted with ground.
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|---|---|---|---|
| CN201810249363.7A CN108398542A (en) | 2018-03-23 | 2018-03-23 | Atterberg Limit measurement device and Atterberg Limit sensing equipment |
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|---|---|---|---|
| CN201810249363.7A CN108398542A (en) | 2018-03-23 | 2018-03-23 | Atterberg Limit measurement device and Atterberg Limit sensing equipment |
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Family
ID=63091601
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|---|---|---|---|
| CN201810249363.7A Pending CN108398542A (en) | 2018-03-23 | 2018-03-23 | Atterberg Limit measurement device and Atterberg Limit sensing equipment |
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| CN112379081A (en) * | 2020-11-13 | 2021-02-19 | 中铁第五勘察设计院集团有限公司 | Liquid plastic limit test method and system |
| CN113138132A (en) * | 2020-01-17 | 2021-07-20 | 河海大学 | Device and method for measuring plastic limit of soil strip |
| CN113189303A (en) * | 2021-04-27 | 2021-07-30 | 青岛市勘察测绘研究院 | Intelligent liquid limit instrument and liquid limit measuring method |
| CN113218819A (en) * | 2021-06-08 | 2021-08-06 | 江苏建研建设工程质量安全鉴定有限公司 | Liquid plastic limit tester with material leveling function and use method thereof |
| CN113567303A (en) * | 2021-07-20 | 2021-10-29 | 深圳市市政工程总公司 | Method for measuring liquid limit, plastic limit and plasticity index of dredged sludge |
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