CN106525650A - Testing apparatus applicable to testing of minimal dry density - Google Patents
Testing apparatus applicable to testing of minimal dry density Download PDFInfo
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- CN106525650A CN106525650A CN201611021795.XA CN201611021795A CN106525650A CN 106525650 A CN106525650 A CN 106525650A CN 201611021795 A CN201611021795 A CN 201611021795A CN 106525650 A CN106525650 A CN 106525650A
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- top board
- long
- protective cover
- inertance tube
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N9/00—Investigating density or specific gravity of materials; Analysing materials by determining density or specific gravity
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- Analytical Chemistry (AREA)
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Abstract
The invention discloses a testing apparatus applicable to testing of minimal dry density. The testing apparatus comprises a measuring cylinder, a long-neck funnel, a tapered plug keeping mechanism, a worm gear, a small electromotor, a support and a control instrument, wherein the support comprises a top board and a supporting mechanism; the small electromotor is fixed on the top board; the long-neck funnel is composed of a taper hopper and a long-neck pipe provided with external threads; the measuring cylinder is located just below the top board; the lower end of the long-neck pipe penetrates the top board and located in the lower part of the measuring cylinder; the long-neck pipe is connected with the top boards through the threads; the tapered plug keeping mechanism comprises a tapered plug, a vertical connection rod and a transverse connection rod; two ends of the transverse connection rod are both connected with the large port of the taper hopper; the lower end of the vertical connection rod is connected with the conical top of the tapered plug while the upper end of the vertical connection rod passes through the long-neck pipe and the taper hopper and is then connected with the transverse connection rod; the worm gear sleeves the output shaft of the small electromotor and is engaged with the external threads of the long-neck pipe; and the small electromotor is electrically connected with the control instrument. The testing apparatus is simple in structure, convenient to operate and applicable to testing of indoor minimal dry density.
Description
Technical field
The present invention relates to laboratory soil test engineering device technique field, and in particular to a kind of suitable for testing experimental relationship
Experimental rig.
Background technology
The experimental relationship for determining cohesiveless soil is to determine the important step of relative density, according to《Earthwork test rule》
(SL237-1999) regulation, for test of the particle diameter less than the cohesiveless soil experimental relationship of 5mm can adopt funnel method, in tool
Body at least needs two operating personnel, a staff to take long neck funnel and conical plug during testing, maintain conical plug bottom position
The 10mm-20mm above the native face, should avoid long neck funnel and conical plug collision graduated cylinder inwall from causing the soil body to vibrate, and a people will in addition
Quality is persistently poured in long neck funnel for the dry ground of 700g.As can be seen here, traditional test method needs at least two people to grasp simultaneously
Make, there is in the case of only one testing crew significant limitation, in addition it is also necessary to which a testing crew hangs always lifts long-neck
Funnel and conical plug are fully entered in graduated cylinder until 700 grams of dry ground, and it is very inconvenient to operate.
The content of the invention
In order to solve the problems, such as above-mentioned prior art, the invention provides a kind of suitable for testing experimental relationship
Experimental rig, the experimental rig simple structure are easy to operate, can be effectively adapted to the test examination of indoor experimental relationship
Test.
Realize technical scheme that above-mentioned purpose of the present invention adopted for：
A kind of experimental rig suitable for testing experimental relationship, including graduated cylinder, long neck funnel, conical plug maintenance mechanism,
Worm gear, micro-machine, support and controller, support at least include top board and the supporting mechanism for roof supporting, micro-machine
It is fixed on top board, long neck funnel is made up of the taper bucket and inertance tube, inertance tube is provided with external screw thread, inertance tube is thin with the taper bucket
End connection, graduated cylinder be located at top board in the middle part of underface, inertance tube lower end pass through top board and be located at graduated cylinder bottom in, inertance tube with top
Plate is threaded connection, and conical plug maintains mechanism to include conical plug, connection montant and connection cross bar, and the two ends for connecting cross bar connect
It is connected on the large port of the taper bucket, the lower end for connecting montant is connected with the conical plug vertex of a cone, upper end passes through inertance tube, the taper bucket and company
Central authorities' connection of cross bar is connect, perpendicular to connection cross bar, worm gear is sleeved on the output shaft of micro-machine connection montant, worm gear and length
Neck tube external screw thread is engaged, and micro-machine is electrically connected with controller.
Also include protective cover, protective cover bottom opening is provided with screwed hole at the top of protective cover, side wall is provided with for micro-machine
The perforation that output shaft is passed through, protective cover bottom are fixed on top board, and output shaft and the perforated interval of micro-machine coordinate, inertance tube
Through protective cover, and it is threaded connection at the top of inertance tube and protective cover, worm gear is located in protective cover.
It is described for symmetrical structure, supporting construction includes two root posts and two bases, wherein the upper end of a root post is fixed
On top board, lower end is fixed therein on a base, and the upper end of another root post is fixed on top board, and lower end is fixed on another bottom
On seat, two root posts are symmetrical with regard to the center of gravity line of top board.
Compared with prior art, its advantage and advantage are the present invention：
1) test of experimental relationship is carried out using this experimental rig, it is only necessary to operating personnel, it is to avoid using passing
System equipment needs the limitation of two operating personnel.
2) test of experimental relationship is carried out using this experimental rig, only need to starts micro-machine, added in long neck funnel
Enter 700g dry ground, long neck funnel and conical plug are lifted without hanging always, it is easy to operate, it is time saving and energy saving, and ensure that test
Accuracy and reliability.
Description of the drawings
Fig. 1 is the structural representation of the experimental rig suitable for testing experimental relationship of the present invention.
Fig. 2 is the structural representation that worm gear and inertance tube are engaged.
Wherein, 1- graduated cylinders, 2- bases, 3- columns, 4- top boards, 5- the taper buckets, 6- inertance tubes, 7- connection cross bars, 8- connections
Montant, 9- conical plugs, 10- micro-machines, 11- controllers, 12- protective covers, 13- worm gears.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is specifically described.
The present invention provide suitable for test experimental relationship experimental rig structure as shown in figure 1, including graduated cylinder 1,
Long neck funnel, conical plug maintain mechanism, worm gear 13, micro-machine 10, protective cover 12, support and controller 11.Support, long-neck leakage
Bucket, conical plug maintain mechanism and protective cover to be steel design.
In the present embodiment, graduated cylinder uses range 1000ml, the standard graduated cylinder of precision 20ml.
Support is symmetrical structure, and support includes top board 4 and the supporting mechanism for roof supporting, and the central authorities of top board are provided with spiral shell
Pit.Supporting mechanism includes two root posts 3 and two bases 2, wherein the upper end of a root post 3 is welded on the top plate 4, lower end welding
Wherein in 2 upper face center of a base, the upper end of another root post 3 is welded on the top plate 4, and lower end is welded on another base 2
In upper face center.In the present embodiment, top board is square platy structure, long 300mm, wide 50mm, thick 10mm, screwed hole it is straight
Footpath is 19mm；Column is circular pin, and a diameter of 10mm, length are 360mm；Base is rectangular structure, long 100mm, wide 20mm,
Thick 20mm a, wherein root post is 120mm with the distance of support center of gravity line.
Long neck funnel is made up of the taper bucket 5 and inertance tube 6, and inertance tube 6 is provided with external screw thread, and inertance tube 6 is thin with the taper bucket 5
End connection.In the present embodiment, a diameter of 60mm of the taper bucket large port, cone angle are 90 °；Long-neck bore is 15mm, and external diameter is
19mm, length are 405mm.
12 bottom opening of protective cover, is provided with screwed hole at the top of protective cover 12, side wall is provided with the output shaft for micro-machine and wears
The perforation crossed, protective cover bottom are fixed on top board.In the present embodiment, protective cover is integrally cylindrical, external diameter 50mm, internal diameter
45mm, total height is 50mm, top thickness 10mm, a diameter of 19mm of screwed hole.
Graduated cylinder 1 is located at the underface in the middle part of top board 4, and 6 lower end of inertance tube is through under top board 4 and protective cover 12, and inertance tube 6
End is threaded connection at the top of inertance tube 6 and top board 4 and protective cover 12 in 1 bottom of graduated cylinder.Assemble the experimental rig
When, make the part that inertance tube is located in graduated cylinder be located at the central authorities of graduated cylinder as far as possible.
Conical plug maintains mechanism to include conical plug 9, connection montant 8 and connection cross bar 7.The two ends of connection cross bar 7 are all connected with
On the large port of the taper bucket 5.The lower end of connection montant 8 is welded on 9 vertex of a cone of conical plug, and upper end passes through inertance tube 6, the taper bucket
The central authorities of connection cross bar 7 are welded in after 5, connection montant 8 is perpendicular to connection cross bar 9.In the present embodiment, conical plug bottom large end face
A diameter of 15mm, cone angle be 90 °, conical plug bottom large end face apart from inertance tube lower end distance be 17.5mm, process of the test
The middle distance for maintaining conical plug bottom large end face apart from soil sample surface is 10-20mm；Connection montant be circular pin, a diameter of 3mm,
Length 435mm；Connection cross bar is metal round rod, and length is 60mm, a diameter of 3mm.
12 bottom of protective cover and 10 base of micro-machine are each attached on top board 4.The output shaft of micro-machine 10 passes through anti-
Shield 12, and itself and perforated interval cooperation.Worm gear 13 is sleeved on the output shaft of micro-machine 10, and worm gear 13 is located at protective cover 12
Interior, worm gear 13 is engaged with 6 external screw thread of inertance tube.Micro-machine 10 is electrically connected with controller 11, and micro-machine possesses positive and reverse return
The function of turning, and steering and the rotating speed of micro-machine are controlled by controller.
The experimental rig using method suitable for testing experimental relationship that the present invention is provided is as follows：
According to the size of soil particle, to adjust the rotating speed on controller, (when soil particle is thicker, soil particle is leaked by long-neck
Bucket is slow into the speed in graduated cylinder, needs the rotating speed of selection of small that conical plug bottom could be maintained to be located at soil sample surface 10mm-
20mm；When soil particle is thinner, soil particle is fast by the speed that long neck funnel is entered in graduated cylinder, need to select larger rotating speed ability
Conical plug bottom is maintained to be located at soil sample surface 10mm-20mm), 700g particle diameters are less than into 5mm's according to the speed of setting first
Dry ground is poured in long neck funnel, while opening micro-machine by controller, long neck funnel and cone is lifted by worm-drive
Shape plug, until the bottom of conical plug exceeds the height of graduated cylinder, then level slowly moves graduated cylinder to beyond device, smooths device with Shamian Island
Shamian Island is smoothed, and reads the volume (reading being estimated to 5ml) of the soil sample shown on graduated cylinder, with the quality of 700g divided by the body shown on graduated cylinder
Product, the as experimental relationship of soil sample.
Claims (3)
1. a kind of experimental rig suitable for testing experimental relationship, including graduated cylinder and long neck funnel, long neck funnel is by the taper bucket
Constitute with inertance tube, inertance tube is connected with the taper bucket taper end, it is characterised in that：Also include that conical plug maintains mechanism, worm gear, small-sized
Motor, support and controller, support at least include top board and the supporting mechanism for roof supporting, and micro-machine is fixed on top board
On, inertance tube is provided with external screw thread, and graduated cylinder is located at the underface in the middle part of top board, and inertance tube lower end passes through top board and is located under graduated cylinder
In portion, inertance tube is threaded connection with top board, and conical plug maintains mechanism to include conical plug, connection montant and connection cross bar, even
The two ends for connecing cross bar are both connected on the large port of the taper bucket, and the lower end for connecting montant is connected with the conical plug vertex of a cone, and upper end passes through
Inertance tube, the taper bucket and the central authorities' connection for being connected cross bar, connection montant are sleeved on micro-machine perpendicular to connection cross bar, worm gear
On output shaft, worm gear is engaged with inertance tube external screw thread, and micro-machine is electrically connected with controller.
2. it is according to claim 1 suitable for test experimental relationship experimental rig, it is characterised in that：Also include protection
Cover, protective cover bottom opening are provided with screwed hole at the top of protective cover, side wall is provided with the perforation passed through for the output shaft of micro-machine,
Protective cover bottom is fixed on top board, and output shaft and the perforated interval of micro-machine coordinate, and inertance tube passes through protective cover, and long-neck
It is threaded connection at the top of pipe and protective cover, worm gear is located in protective cover.
3. it is according to claim 1 and 2 suitable for test experimental relationship experimental rig, it is characterised in that：Described
Support is symmetrical structure, and supporting construction includes two root posts and two bases, wherein the upper end of a root post is fixed on top board, under
End is fixed therein on a base, and the upper end of another root post is fixed on top board, and lower end is fixed on another base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611021795.XA CN106525650A (en) | 2016-11-15 | 2016-11-15 | Testing apparatus applicable to testing of minimal dry density |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611021795.XA CN106525650A (en) | 2016-11-15 | 2016-11-15 | Testing apparatus applicable to testing of minimal dry density |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106525650A true CN106525650A (en) | 2017-03-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611021795.XA Pending CN106525650A (en) | 2016-11-15 | 2016-11-15 | Testing apparatus applicable to testing of minimal dry density |
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| CN (1) | CN106525650A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004011258U1 (en) * | 2004-07-17 | 2004-09-23 | Degussa Ag | Powder density measurement unit has measurement cylinder fed from funnel with tulip shaped outlet closed and opened by rotating disc |
| DE202012101976U1 (en) * | 2012-05-30 | 2012-07-13 | Bernd Teller | Bulk density meter |
| CN203053814U (en) * | 2012-12-27 | 2013-07-10 | 山东科技大学 | Cohesionless soil maximum dry density measurement instrument |
| CN203241318U (en) * | 2013-05-17 | 2013-10-16 | 中铁第五勘察设计院集团有限公司 | Automatic density detector using sand filling method |
| CN204882297U (en) * | 2015-08-25 | 2015-12-16 | 安徽理工大学 | Novel soil test toper cock stem |
| CN205333467U (en) * | 2016-01-05 | 2016-06-22 | 曾令长 | Molecular sieve bulk density apparatus |
| CN205593882U (en) * | 2016-04-23 | 2016-09-21 | 深圳大学 | Measure apparent density's device |
| CN206161467U (en) * | 2016-11-15 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Test device suitable for test minimum dry density |
-
2016
- 2016-11-15 CN CN201611021795.XA patent/CN106525650A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE202004011258U1 (en) * | 2004-07-17 | 2004-09-23 | Degussa Ag | Powder density measurement unit has measurement cylinder fed from funnel with tulip shaped outlet closed and opened by rotating disc |
| DE202012101976U1 (en) * | 2012-05-30 | 2012-07-13 | Bernd Teller | Bulk density meter |
| CN203053814U (en) * | 2012-12-27 | 2013-07-10 | 山东科技大学 | Cohesionless soil maximum dry density measurement instrument |
| CN203241318U (en) * | 2013-05-17 | 2013-10-16 | 中铁第五勘察设计院集团有限公司 | Automatic density detector using sand filling method |
| CN204882297U (en) * | 2015-08-25 | 2015-12-16 | 安徽理工大学 | Novel soil test toper cock stem |
| CN205333467U (en) * | 2016-01-05 | 2016-06-22 | 曾令长 | Molecular sieve bulk density apparatus |
| CN205593882U (en) * | 2016-04-23 | 2016-09-21 | 深圳大学 | Measure apparent density's device |
| CN206161467U (en) * | 2016-11-15 | 2017-05-10 | 中国科学院武汉岩土力学研究所 | Test device suitable for test minimum dry density |
Non-Patent Citations (1)
| Title |
|---|
| 范孟华;孔德志;: "砂相对密度试验方法的改进" * |
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