CN106053184A - Full-automatic reciprocating type sandy soil sample preparing instrument - Google Patents
Full-automatic reciprocating type sandy soil sample preparing instrument Download PDFInfo
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- CN106053184A CN106053184A CN201610674638.2A CN201610674638A CN106053184A CN 106053184 A CN106053184 A CN 106053184A CN 201610674638 A CN201610674638 A CN 201610674638A CN 106053184 A CN106053184 A CN 106053184A
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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
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Abstract
The invention relates to a full-automatic reciprocating type sandy soil sample preparing instrument which is characterized by comprising a rigid frame, wherein the rigid frame is fixedly connected with a vertical lifting system, a movable cross beam is fixedly connected with the vertical lifting system, a horizontal movable system is fixedly connected with the movable cross beam, a movable bracket is fixedly connected with the horizontal movable system, a funnel assembly is hoisted at the lower end of the movable bracket, a distance measuring instrument is fixedly connected with the funnel assembly, and a PLC (programmable logic controller) is fixedly connected with the rigid frame; the vertical lifting system, the horizontal movable system and the distance measuring instrument are respectively electrically connected with the PLC. According to the working process, sand in a funnel is subjected to sand rain scattering by virtue of a duckbill, the distance measuring instrument is used for monitoring the distance between the funnel assembly and the sand surface in real time; the horizontal movable system is used for driving the funnel assembly to move horizontally; a guide assembly is used for guiding the movable bracket and the funnel assembly; the vertical lifting system is used for regulating the height to control the falling distance of sand in sample preparation; and the PLC is used for controlling the operation of a speed control motor, thereby realizing automation of the whole course of sample preparation of the system.
Description
Technical field
The present invention relates to testing equipment, be the full-automatic of a kind of ultimate principle independent development based on sand rain method sample preparation development
Reciprocating sand sample preparing instrument.
Background technology
Geotechnical model experiment has higher requirement to testing equipment, test material and model sample preparation, and wherein prepared by sample
Link is vital sport technique segment in model experiment.For sand sample, common method for making sample has: vibratory drilling method, layering
Compacting process and sand rain method etc..Owing to sand rain method simulates sand deposition under wind-force or flow action, the sample of its molding and reality
More closely, therefore the natural sand soil layer on border, is used widely in the geotechnical model of sand is tested.The Pu family of Tsing-Hua University
Red horse professors etc., in the centrifuge modelling test experiment of research shallow water oil field in 1988, have employed reciprocating funnel of twitching one's mouth and spread
Sand carries out sand rain method dress sample.Particle size in centrifugal model and boundary effect are carried out by the Xu Guangming etc. of Nanjing Shui Keyuan for 1996
During research, also use sand rain method.Sample is prepared by the layering in model casing of single hole funnel.
At present, the one-tenth quadrat method of sand in geotechnical model test has been carried out specific aim research by domestic many colleges and universities.Dalian
Polytechnics's geotechnical study Guo Ying etc. discuss sand difference according to sand static(al) threeaxis test results and become quadrat method
Impact on sample shear shearing stress.Research finds that sand becomes quadrat method the result of triaxial test to be had large effect, simultaneously
Also indicate that, the one-tenth quadrat method of sand on the fluffing of moulding sand and in the impact of close sand relatively big, but the impact on close sand is less；Hohai University's ground
The Zhou Yundong of Graduate School of Engineering etc. are also further discussed different dress quadrat method to sand sample based on true triaxial test result
Impact；The Wu Jianpings of Zhejiang University etc., to funnel sizes problem in sand rain method molding, have been respectively adopted dynamic and static three axles and Resonant Column
Three kinds of test methods have carried out experimental study, summarize funnel shaped and sand averagely falls away to sample density size distribution scope
Affecting laws, it is proposed that the ideal range of funnel caliber and sand maximum particle diameter ratio.Yang persons of outstanding talent etc. carry at sand foundation
The centrifugal model experiment of power uses aerial knockout method to prepare sand model ground, and discusses Particle size.Britain Camb is big
The Madabhushi etc. learned is a set of sand rain device independent research in 2006, main uses single hole funnel, by adjustment fall away from
Make sand naturally unrestrained, be prepared for the sand model sample of different degree of compaction.Dalian University of Technology Zeng Hongjing, Wang Zhong on this basis
Great waves etc. use single hole funnel equally, are hung by crane guide chain, write command statement and allow funnel move regulation path along chute,
Having carried out sand sample preparation in shallow foundation bearer properties is tested, test has found that motor control accuracy is not enough and funnel slight
Rock, result in the density of sand sample under same preparation condition in the range of 5%, occur in that fluctuation.
As can be seen here, although sand dress quadrat method is improved by achievement in research in the past, but the automaticity of sample preparation
The most relatively low, anthropic factor impact is very big, and uniformity and the sample preparation repeatability of sample not can fully ensure that.
Summary of the invention
It is an object of the invention to: a kind of full-automatic reciprocating type sand sample preparing instrument is provided, it is possible to accurately realize sand examination
The uniform preparation process of sample.
The present invention is realized by techniques below scheme: a kind of full-automatic reciprocating type sand sample preparing instrument, its feature
It is: it includes rigid frame, vertical lift system, moving beam, horizontal movement system, guidance set, traversing carriage, funnel group
Part, sandbox, diastimeter and PLC, described rigid frame is the fixed cross beam that four root posts support, and two groups vertical
Jacking system is respectively placed in the both sides of rigid frame, the upper end of vertical lift system and the fixed cross beam of rigid frame be connected, under
Hold hinged with rigid frame, in moving beam is placed in rigid frame, two ends be connected with vertical lift system respectively, move horizontally and be
System is placed in above moving beam and is connected, and guidance set is placed on moving beam, one end is connected with moving beam, and traversing carriage is same
Time be socketed on horizontal movement system and moving beam, traversing carriage and horizontal movement system are connected and another of guidance set
End is connected, and funnel assemblies is lifted on traversing carriage lower end, and sandbox is placed on the bottom surface of rigid frame, and diastimeter is placed in funnel assemblies
Going up and be connected, PLC is placed on rigid frame and is connected, vertical lift system, horizontal movement system and range finding
Instrument electrically connects with PLC respectively.
The structure of described vertical lift system is: it includes buncher, shaft coupling, the first leading screw, the first screw and company
Joint chair, described buncher is placed on the crossbeam of rigid frame and is connected, and the upper end of the first leading screw is by shaft coupling and speed governing electricity
The line shaft of machine is connected, lower end is hinged with rigid frame, and the first screw and the first threads of lead screw connect, and connects cover for seat and is connected on first
Being connected on screw and with moving beam, buncher electrically connects with PLC.
The structure of described horizontal movement system is: it includes spacing bearing, the second leading screw, buncher, shaft coupling and
Two screws, the described built-in support set of spacing bearing, are placed on moving beam and are connected, and it is built-in that the second leading screw is installed on spacing bearing
Support set in and be connected by support set and spacing bearing, second leading screw one end is stretched out outside spacing bearing, and buncher is placed in
The second leading screw termination on moving beam, outside spacing bearing is also connected, and the line shaft of buncher is by shaft coupling and second
Thick stick is connected, and the second screw and the second threads of lead screw connect, and it is interior and be connected that the second screw is placed in traversing carriage, buncher and PLC
Programmable Logic Controller electrically connects.
The structure of described guidance set is that it includes that guide rail and slide block, described guide rail are placed on moving beam and are connected, institute
Stating in slide block is placed in traversing carriage and be connected, guide rail is slidably connected with slide block.
The structure of described funnel assemblies is: it includes funnel body and opening roll adjustment parts, and described funnel body is lifted on
Traversing carriage lower end, opening roll adjustment parts are placed at the duckbilled of funnel body and are connected, and the body bottom surface of opening roll adjustment parts is solid
Tie-in distance meter.
The structure of described opening roll adjustment parts is: it includes body, width baffle plate, connecting rod, handwheel and locking nut, institute
Stating body be placed at the duckbilled of funnel body and be connected, body arranges vertical sand draining port, and width baffle plate is placed in the most internal and slides
Connecting, connecting rod is screw rod and threadeds with body, and this internal and width gear is stretched in the connecting rod one end being placed in horizontal level
Plate is hinged, the other end is positioned at this external connected handwheel, and locking nut is placed in external threadeds with connecting rod.
Described first leading screw and the first screw, the second leading screw and the second screw are ball-screw and ball screw.
Described support set is rolling bearing.
Described diastimeter is laser range sensor.
The work process of the present invention is: the sand in funnel body is carried out sand rain by duckbilled by roll adjustment parts and trickles down and by opening
The flow velocity of mouth roll adjustment component controls sand；The diastimeter being connected in funnel assemblies monitor in real time between funnel assemblies and sand face away from
From；Horizontal movement system drives funnel assemblies to carry out reciprocating by the traversing carriage being connected, and its ball screw assembly, can
Accurately control the horizontal movement speed of funnel assemblies；Guidance set is same guide for traversing carriage and connected funnel assemblies thereof
Time the pressure that brings also subject to traversing carriage and connected funnel assemblies weight thereof；Vertical lift system is by the mobile horizontal stroke being connected
Sill bolt moves horizontal movement system, guidance set, traversing carriage, funnel assemblies and the diastimeter vertical lift being connected on it and carries out height
Degree adjusts, it is possible to when accurately controlling sample preparation sand fall away from；PLC receive diastimeter transmission metric data,
And control buncher operating and moving beam is independently promoted or funnel assemblies is independently moved horizontally, thus realize this system system
The whole-course automation of sample.
The invention has the beneficial effects as follows: the elements such as buncher, diastimeter and the controlled programmable device of PLC are tied by the present invention mutually
Close, it is achieved that sand rain method prepares the automatization of sand sample, and it has the advantage that and is embodied in: 1. have employed buncher and accurately control
The walking in a horizontal state speed of funnel assemblies processed, increases substantially uniformity prepared by sand sample；2. have employed diastimeter accurately to detect leakage
Bucket assembly and the distance on sand surface, and Real-time Feedback signal, increase substantially away from precise control；3. have employed PLC can
Control programmable device carries out signal processing in early stage programming and traveling, it is achieved the automatization of sand sample preparation overall process；4. the present invention is from root
Avoid manual operation impact in sand sample preparation on Ben, improve the overall control accuracy of sand sample, for sand model test
Early stage sample preparation provide technical support.
Accompanying drawing explanation
Fig. 1 is the schematic front view of the present invention；
Fig. 2 is the left view schematic diagram of Fig. 1；
Fig. 3 is the A close-up schematic view of Fig. 1；
Fig. 4 is the structural representation of the vertical lift system of the present invention；
Fig. 5 is the structural representation of the horizontal movement system of the present invention；
Fig. 6 is the structural representation of the guidance set of the present invention；
Fig. 7 is the B close-up schematic view of Fig. 6；
Fig. 8 is the structural representation of the funnel assemblies of the present invention；
Fig. 9 is the left view schematic diagram of Fig. 8；
Figure 10 is the C close-up schematic view of Fig. 9.
In figure: 1 vertical lift system, 2 rigid frames, 3 moving beams, 4 horizontal movement system, 5 traversing carriages, 6 funnels
Assembly, 7 sandboxes, 8 guidance sets, 9 first leading screws, 10 first screws, 11 connect seat, and 12 bunchers, 13 shaft couplings, 14 is spacing
Bearing, 15 second screws, 16 second leading screws, 17 slide blocks, 18 guide rails, 19 funnel body, 20 opening roll adjustment parts, 21 bodies, 22
Locking nut, 23 handwheels, 24 connecting rods, 25 width baffle plates.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings.
Seeing Fig. 1～Figure 10, one full-automatic reciprocating type sand sample preparing instrument of the present invention, it includes rigid frame 2, hangs down
Straight jacking system 1, moving beam 3, horizontal movement system 4, guidance set 8, traversing carriage 5, funnel assemblies 6, sandbox 7, range finding
Instrument, control chamber and PLC, described rigid frame 2 is the fixed cross beam that four root posts support, two groups of vertical lifts
System 1 is respectively placed in the both sides of rigid frame 2, the upper end of vertical lift system 1 and the fixed cross beam of rigid frame 2 be connected, under
Holding hinged with rigid frame 2, moving beam 3 is placed in rigid frame 2, two ends are connected with vertical lift system 1 respectively, and level is moved
Dynamic system 4 is placed in moving beam 3 and above and is connected, and guidance set 8 is placed on moving beam 3, one end is connected with moving beam 3,
Traversing carriage 5 is socketed on horizontal movement system 4 and moving beam 3 simultaneously, traversing carriage 5 be connected with horizontal movement system 4 and
The other end of guidance set 8 is connected, and funnel assemblies 6 is lifted on traversing carriage 5 lower end, and sandbox 7 is placed in the bottom surface of rigid frame 2
On, diastimeter is placed in funnel assemblies 6 and is connected, and control chamber is placed on rigid frame 2 and is connected, and PLC is put
On rigid frame 2 and be connected, vertical lift system 1, horizontal movement system 4, diastimeter and control chamber can be compiled with PLC respectively
Range controller electrically connects.
The structure of described vertical lift system 1 is: it includes buncher 12, shaft coupling the 13, first leading screw 9, first
Mother 10 and connection seat 11, described buncher 12 is placed on the crossbeam of rigid frame 2 and is connected, and the upper end of the first leading screw 9 is passed through
Shaft coupling 13 and the line shaft of buncher 12 are connected, lower end is hinged with rigid frame 2, the first screw 10 and the first leading screw 9 spiral shell
Stricture of vagina connects, and connects seat 11 and is socketed on the first screw 10 and is connected with moving beam 3, buncher 12 and PLC PLC technology
Device electrically connects.
The structure of described horizontal movement system 4 is: it includes spacing bearing the 14, second leading screw 16, buncher 12, shaft coupling
Device 13 and the second screw 15, the described built-in rolling bearing as support set of spacing bearing 14, be placed on moving beam 3 and solid
Even, with spacing in the second leading screw 16 is installed on the built-in support set of spacing bearing 14 and by the rolling bearing as support set
Bearing 14 is connected, and second leading screw 16 one end is stretched out outside spacing bearing 14, and buncher 12 is placed on moving beam 3, spacing bearing
The second leading screw 16 termination outside 14 is also connected, and the line shaft of buncher 12 is connected with the second leading screw 16 by shaft coupling 13, the
Two screws 15 are threadeded with the second leading screw 16, in the second screw 15 is placed in traversing carriage 5 and be connected, and buncher 12 and PLC
Programmable Logic Controller electrically connects.
The structure of described guidance set 8 is: it includes that guide rail 18 and slide block 17, described guide rail 18 are placed on moving beam 3
And be connected, in described slide block 17 is placed in traversing carriage 5 and be connected, guide rail 18 is slidably connected with slide block 17.
The structure of described funnel assemblies 6 is: it includes funnel body 19 and opening roll adjustment parts 20, described funnel body 19
Being lifted on traversing carriage 5 lower end, opening roll adjustment parts 20 are placed at the duckbilled of funnel body 19 and are connected, opening roll adjustment parts 20
Body 21 bottom surface be connected diastimeter.
The structure of described roll adjustment parts is: it includes body 21, width baffle plate 25, connecting rod 24, handwheel 23 and locking screw
Female 22, described body 21 is placed at the duckbilled of funnel body 19 and is connected, and body 21 arranges vertical sand draining port, and width baffle plate 25 is put
In body 21 and be slidably connected, connecting rod 24 is screw rod and threadeds with body 21, is placed in the connecting rod 24 of horizontal level
One end is hinged with width baffle plate 25 in stretching into body 21, the other end is positioned at the outer handwheel 23 that is connected of body 21, and locking nut 22 is placed in
Body 21 is outer threadeds with connecting rod 24.
The present embodiment uses prior art manufacture, described first leading screw 9 and first screw the 10, second leading screw 16 and second
Female 15 are commercially available FM-CP10 automatization rack-track, and described buncher 12 is that commercially available Y180L-4,22KW frequency conversion is adjusted
Speed motor；Described diastimeter is commercially available MSE-D150 laser range sensor, measures scope 30 meters, output unit cm；Described
Control chamber is commercially available 4-20MA regular tap control chamber；Described PLC be commercially available FX3GA-24MR-CM,
PLC；Rolling bearing, the test apparatus of employing and element described in the present embodiment are commercially available prod.
The work process of the present embodiment is: the sand in funnel body 19 is carried out sand rain by duckbilled by opening roll adjustment parts 20
Trickle down and controlled by opening roll adjustment parts 20 flow velocity of sand；It is connected in the diastimeter in funnel assemblies 6 and monitors funnel assemblies 6 in real time
And the distance between sand face；Horizontal movement system 4 drives funnel assemblies 6 to carry out reciprocating by the traversing carriage 5 being connected,
The ball screw assembly, of its second leading screw 16 and the second screw 15 composition can accurately control the horizontal movement speed of funnel assemblies 6；
Guidance set 8 for traversing carriage 5 and be connected funnel assemblies 6 guide while also subject to traversing carriage 5 and be connected
The pressure that funnel assemblies 6 weight is brought；Vertical lift system 1 drives the level being connected on it to move by the moving beam 3 being connected
Dynamic system 4, guidance set 8, traversing carriage 5, funnel assemblies 6 and diastimeter vertical lift carry out height adjustment, it is possible to accurately control
During sample preparation sand fall away from；PLC receives the metric data of diastimeter transmission and controls buncher 12 and transport
Turn and moving beam 3 is independently promoted or funnel assemblies 6 is independently moved horizontally, thus realize the whole-process automatic of this system sample preparation
Change.
Claims (9)
1. a full-automatic reciprocating type sand sample preparing instrument, is characterized in that: it includes rigid frame, vertical lift system, shifting
Dynamic crossbeam, horizontal movement system, guidance set, traversing carriage, funnel assemblies, sandbox, diastimeter and PLC,
Described rigid frame is the fixed cross beam that four root posts support, and two groups of vertical lift system are respectively placed in the both sides of rigid frame,
The upper end of vertical lift system and the fixed cross beam of rigid frame are connected, lower end is hinged with rigid frame, and moving beam is placed in just
Property framework in, two ends respectively with vertical lift system be connected, horizontal movement system is placed in above moving beam and is connected, guiding group
Part is placed on moving beam, one end is connected with moving beam, and traversing carriage is socketed in horizontal movement system and moving beam simultaneously
On, traversing carriage is connected with horizontal movement system and the other end of guidance set is connected, and funnel assemblies is lifted under traversing carriage
End, sandbox is placed on the bottom surface of rigid frame, and diastimeter is placed in funnel assemblies and is connected, and PLC is placed in just
On property framework and be connected, vertical lift system, horizontal movement system and diastimeter are electrically connected with PLC respectively
Connect.
2. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 1, is characterized in that: described vertical lift system
Structure is: it includes buncher, shaft coupling, the first leading screw, the first screw and connects seat, and described buncher is placed in rigid frame
On the crossbeam of frame and be connected, the upper end of the first leading screw is connected by the line shaft of shaft coupling with buncher, lower end and rigid frame
Frame is hinged, and the first screw and the first threads of lead screw connect, and connects cover for seat and is connected on the first screw and is connected with moving beam, speed governing
Motor electrically connects with PLC.
3. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 1, is characterized in that: described horizontal movement system
Structure is: it includes spacing bearing, the second leading screw, buncher, shaft coupling and the second screw, the described built-in support of spacing bearing
Overlap, be placed on moving beam and be connected, in the second leading screw is installed on the built-in support set of spacing bearing and by support set and limit
Position bearing is connected, and second leading screw one end is stretched out outside spacing bearing, buncher is placed on moving beam, outside spacing bearing second
Leading screw termination is also connected, and the line shaft of buncher is connected by shaft coupling and the second leading screw, the second screw and the second leading screw spiral shell
Stricture of vagina connects, and the second screw is placed in traversing carriage and is connected, and buncher electrically connects with PLC.
4. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 3, is characterized in that: described support set is the axis of rolling
Hold.
5. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 1, is characterized in that: the structure of described guidance set
It is: it includes that guide rail and slide block, described guide rail are placed on moving beam and are connected that it is interior and solid that described slide block is placed in traversing carriage
Even, guide rail and shoe contact.
6. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 1, is characterized in that: the structure of described funnel assemblies
Being: it includes funnel body and opening roll adjustment parts, described funnel body is lifted on traversing carriage lower end, and opening roll adjustment parts are put
At the duckbilled of funnel body and be connected, the body bottom surface of opening roll adjustment parts is connected diastimeter.
7. full-automatic reciprocating type sand sample preparing instrument as claimed in claim 6, is characterized in that: described opening roll adjustment parts
Structure is: it includes body, width baffle plate, connecting rod, handwheel and locking nut, and described body is placed at the duckbilled of funnel body
And be connected, body arranges vertical sand draining port, and width baffle plate is placed in that this is the most internal and be slidably connected, connecting rod be screw rod and with body spiral shell
Stricture of vagina connects, and is placed in connecting rod one end of horizontal level and stretches into this and the most internal be positioned at this with width panel hinge, the other end and the most external be connected
Handwheel, locking nut is placed in external threadeds with connecting rod.
8. as claimed in claim 2 or claim 3 full-automatic reciprocating type sand sample preparing instrument, is characterized in that: described first leading screw and
First screw, the second leading screw and the second screw are ball-screw and ball screw.
9. the full-automatic reciprocating type sand sample preparing instrument as described in claim 1 or 6, is characterized in that: described diastimeter is sharp
Ligh-ranging sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674638.2A CN106053184A (en) | 2016-08-16 | 2016-08-16 | Full-automatic reciprocating type sandy soil sample preparing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610674638.2A CN106053184A (en) | 2016-08-16 | 2016-08-16 | Full-automatic reciprocating type sandy soil sample preparing instrument |
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| Publication Number | Publication Date |
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| CN106053184A true CN106053184A (en) | 2016-10-26 |
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ID=57480612
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610674638.2A Pending CN106053184A (en) | 2016-08-16 | 2016-08-16 | Full-automatic reciprocating type sandy soil sample preparing instrument |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718876A (en) * | 2017-11-09 | 2018-02-23 | 江门市华海纸品有限公司 | A kind of automatic feeding device based on color-printed |
| CN108051247A (en) * | 2017-12-17 | 2018-05-18 | 内蒙古航天红峡化工有限公司 | A kind of dangerous substances automatic remote sampler |
| CN108044615A (en) * | 2018-01-09 | 2018-05-18 | 深圳市晓控通信科技有限公司 | A kind of portable type Medical Robot that can quantify allotment based on Internet of Things |
| US20210208040A1 (en) * | 2018-05-31 | 2021-07-08 | Yeditepe Universitesi | Automatic funnel control device |
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| CN202126369U (en) * | 2011-06-28 | 2012-01-25 | 宁波大学 | Sample preparation instrument of sand triaxial test |
| CN104697828A (en) * | 2014-12-09 | 2015-06-10 | 温州大学 | Device for preparing hollow cylindrical sandy soil samples with different compactness degrees |
| CN204740163U (en) * | 2015-05-19 | 2015-11-04 | 山西省交通科学研究院 | Test device of accurate preparation sand sample |
| CN105092331A (en) * | 2015-08-19 | 2015-11-25 | 东北电力大学 | Full-automatic reciprocating sand sample preparing instrument |
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| CN201517973U (en) * | 2009-09-27 | 2010-06-30 | 上海大学 | Sandy soil triaxial test sample kit |
| CN202126369U (en) * | 2011-06-28 | 2012-01-25 | 宁波大学 | Sample preparation instrument of sand triaxial test |
| CN104697828A (en) * | 2014-12-09 | 2015-06-10 | 温州大学 | Device for preparing hollow cylindrical sandy soil samples with different compactness degrees |
| CN204740163U (en) * | 2015-05-19 | 2015-11-04 | 山西省交通科学研究院 | Test device of accurate preparation sand sample |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107718876A (en) * | 2017-11-09 | 2018-02-23 | 江门市华海纸品有限公司 | A kind of automatic feeding device based on color-printed |
| CN108051247A (en) * | 2017-12-17 | 2018-05-18 | 内蒙古航天红峡化工有限公司 | A kind of dangerous substances automatic remote sampler |
| CN108044615A (en) * | 2018-01-09 | 2018-05-18 | 深圳市晓控通信科技有限公司 | A kind of portable type Medical Robot that can quantify allotment based on Internet of Things |
| US20210208040A1 (en) * | 2018-05-31 | 2021-07-08 | Yeditepe Universitesi | Automatic funnel control device |
| US11953470B2 (en) * | 2018-05-31 | 2024-04-09 | Yeditepe Universitesi | Automatic funnel control device |
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