CN101769915B - Motor-driven plate rubbing apparatus - Google Patents
Motor-driven plate rubbing apparatus Download PDFInfo
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- CN101769915B CN101769915B CN 201010028924 CN201010028924A CN101769915B CN 101769915 B CN101769915 B CN 101769915B CN 201010028924 CN201010028924 CN 201010028924 CN 201010028924 A CN201010028924 A CN 201010028924A CN 101769915 B CN101769915 B CN 101769915B
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- main shaft
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- stereotyped
- driven plate
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Abstract
The invention provides a motor-driven plate rubbing apparatus for detecting the plastic limit water content in the soil; the apparatus at least comprises a motor and a transmission mechanism driven by the motor; the motor drives the rotation of the main shaft through the transmission mechanism; the main shaft is divided into a thread section and an optical axis section; an axial-moving flat plate is installed on the main shaft through screw threads to form a screw rod nut mechanism; a cam is fixedly installed on the optical axis section of the main shaft; the cam is installed on the main shaft and is positioned between two baffles and the main shaft in the middle part of a radial-moving flat plate; the middle part of the radial-moving flat plate is provided with a through hole, two ends are provided with return springs; and the main shaft passes through the middle part of the radial-moving flat plate via the through hole. The motor-driven plate rubbing apparatus can measure the plastic limit water content with specific physical definition precisely, accurately and high effectively by simulating the rubbing of the soil strip manually, thereby avoiding various restrictions and defects of manual rubbing.
Description
Technical field:
The present invention relates to a kind of motor-driven plate rubbing apparatus, for being used for measuring the earthwork test Instrument of native plastic limit water cut.
Background technology:
Liquid limit, the plastic limit test of soil are two the most basic in soil test tests, and Casa Grande (A.Casagrande) diagram of forgeability behaviour is exactly as two basic indexs dividing great soil group with liquid limit and plasticity index.Plastic limit is a key character of cohesive soil, the physical property and the state that have produced when having reflected in essence grogs and water interaction.The plastic limit index of cohesive soil is on practical engineering application, for the state of cohesive soil classification, division cohesive soil, the permission bearing capacity of evaluation soil etc. have supplied important scientific basis.The plastic limit index adopts traditionally rolls stranding method mensuration, the method regulation: produce the crack when native bar diameter is twisted into 3mm, and begins fracture, the water cut of expression sample reaches the plastic limit water cut.
The method of mensuration plastic limit commonly used is rolled stranding method and liquidplastic limit combined method at present.It is clear and definite to roll stranding method physical meaning, but is manual operations purely, so its order of accuarcy depends on experimenter's experience and skill fully, this is for very inconvenient without the operator of practical experience or beginner's study, operation, and it is also quite low to do this success of the test rate.And the plastic limit water cut that liquidplastic limit combined method records, method is simple, with liquid limit relation on the some is arranged, and deviation is far with the physical meaning of plastic limit itself.So develop the experimental apparatus that the stranding method is rolled in a kind of simulation, can record accurately, accurately and efficiently the plastic limit water cut with clear and definite physical meaning, extremely urgent.
Summary of the invention:
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of motor-driven plate rubbing apparatus, this motor-driven plate rubbing apparatus rolls on the basis of stranding at simulating hand to native bar, the plastic limit water cut with clear and definite physical meaning be not only can record accurately, accurately and efficiently, and various restrictions and the defective of artificial rubbing avoided.
The present invention realizes that technical scheme that its purpose adopts is that a kind of motor-driven plate rubbing apparatus comprises motor and at least by the gear train of driven by motor, motor is by the rotation of gear train drive shaft, main shaft is divided into thread segment and optical axis section two parts, moving axially flat board is installed on the main shaft by screw thread, form leading screw and nut mechanism, cam is fixedly installed in the optical axis section of main shaft, cam is installed on the main shaft, and cam is being fixed between two baffle plates and main shaft that moves radially dull and stereotyped middle part, move radially dull and stereotyped middle part and have through hole, two ends are provided with retracing spring, and the main shaft via through holes passes from moving radially dull and stereotyped middle part.
And move radially the optical axis section that flat board is positioned at main shaft, apart from the terminal 3mm of thread segment.Move radially dull and stereotyped pliable and toughly and outside surface is coarse, be placed with resistance wire in it.
And, main shaft, move axially flat board and move radially the dull and stereotyped outer shell that is provided with.The shell below is provided with base, and base is provided with the balance globule, and the base below is provided with the adjusting pin.Main shaft is installed on the shell by bearing.Moving radially flat board is installed on the shell by retracing spring.
As shown from the above technical solution, motor-driven plate rubbing apparatus critical piece provided by the invention is motor and motor-driven two flat boards that move radially or move along the main shaft axial reciprocating along main shaft respectively, the soil bar is between two flat boards, move radially and stop to move after flat board moves to the thread segment end, move axially flat board all the time along the main shaft axially reciprocating, simulation is manually rolled stranding to native bar, move axially and also be provided with resistance wire in the flat board native bar is heated, make native bar moisture quick, evenly lost, the purpose that crackle is measured plastic limit occurs fast thereby reach.The order of accuarcy that rolls the stranding method in the time of can avoiding manual rubbing fully by motor-driven plate rubbing apparatus provided by the invention depends on experimenter's experience and the shortcoming of skill fully, can record accurately, accurately and efficiently the plastic limit water cut with clear and definite physical meaning, warranty test success ratio.
Description of drawings:
Accompanying drawing is the structural representation of motor-driven plate rubbing apparatus provided by the invention.
1. move radially flat board among the figure, 2. move axially flat board, 3. bearing, and 4. spring, 5 small front aprons, 6. cam, 7. belt pulley, 8. the balance globule is 9. regulated pin, 10. main shaft, 11. shells, 12. bases.
Embodiment:
Shown in accompanying drawing, motor-driven plate rubbing apparatus provided by the invention mainly comprises motor and by the gear train 7 of driven by motor, and motor is by the main shaft that rotates 10 of gear train 7 drivings, main shaft 10 is divided into thread segment and optical axis section two parts, move axially dull and stereotyped 2 and be installed on the main shaft 10 by screw thread, form leading screw and nut mechanism.Move radially the optical axis section that flat board 1 is positioned at main shaft 10, apart from the terminal 3mm of thread segment, cam 6 is fixedly installed in the optical axis section of main shaft 10, the middle part that moves radially flat board 1 has through hole, two ends are installed on the shell 11 by retracing spring 4, main shaft 10 via through holes pass from moving radially dull and stereotyped 1 middle part, and cam 6 is installed on the main shaft 10, and cam 6 is being fixed between two baffle plates 5 and main shaft 10 that moves radially dull and stereotyped 1 middle part.Move radially the dull and stereotyped 1 pliable and tough and coarse palm with the simulation people of outside surface, be preferably the class rubber slab, move axially dull and stereotyped 2 and be preferably the class focussing glass, move radially in dull and stereotyped 1 and be placed with resistance wire, resistance wire can be several, several resistance wires are connected in parallel by electric wire, two wires, one termination enters plug, when native bar is crossed when wet, but resistive heater, make native bar moisture quick, evenly lost, the purpose that crackle is measured plastic limit occurs fast thereby reach.Shell 11 at main shaft 10, move axially dull and stereotyped 2 and move radially outside dull and stereotyped 1, main shaft 10 is installed on the shell 11 by bearing 3, moves radially dull and stereotyped 1 and is installed on the shell 11 by retracing spring 4.Shell 11 belows are provided with base 12, and base 12 is provided with the balance globule 8, and base 12 belows are provided with regulates pin 9.
During work, the adjusting pin 9 of adjusting base 12 belows, by observing the balance globule, to base 12 levels, with the native bar of the thick 5-8mm of certain-length, along with move radially dull and stereotyped 1 vertical direction of moving and be placed on and move axially on dull and stereotyped 2.Start micromachine, motor drives main shaft 10 rotations by gear train 7, gear train 7 can be tape handler or chain-drive mechanism, main shaft 10 rotarily drives and moves axially dull and stereotyped 2 risings, when rising to spindle thread section terminal (move radially this moment dull and stereotyped with move axially between flat board approximately apart from 3mm), move axially dull and stereotyped 2 and stop rising.Simultaneously main shaft 10 rotations can drive cam 6 rotations on it, because cam 6 is being fixed between two baffle plates 5 and main shaft 10 that moves radially dull and stereotyped 1 middle part, move radially flat board 1 and move to the left side when cam 6 forwards to can make when the left side contacts with baffle plate, and move radially dull and stereotyped 1 and move to the right when cam 6 forwards to can make when the right side contacts with another baffle plate, in this process, the retracing spring that moves radially dull and stereotyped 1 two ends can make and leave dull and stereotyped 1 homing of moving radially of original position, thereby realizes moving radially dull and stereotyped 1 reciprocal translation.
When native bar surface with move radially dull and stereotyped 1 when contact, begin native bar is applied the rubbing effect as the class rubber slab that moves radially dull and stereotyped 1, and as the class focussing glass continuation rising that moves axially dull and stereotyped 2.When treating that distance between two plates is 3mm, the class focussing glass no longer rises, and is slack, only has the back and forth rubbing of class rubber slab, and by repeatedly left and right sides translation, until the soil sample of certain denseness, to rub with the hands and be rolled into diameter be 3mm, with the native bar of crackle.After the purpose of the built-in suitable power resistor silk of class rubber slab is rubbing a period of time, if native bar is excessively wet, then can resistive heater, make native bar moisture fast, evenly scatter and disappear, the purpose that crackle is measured plastic limit appears fast thereby reach.Motor in this motor-driven plate rubbing apparatus can be selected monolithic processor controlled stepper motor, and single-chip microcomputer is built-in with the program of control step motor rotation, automatically move back and forth by the programmed control stepper motor, thus the function that realizes rubbing with the hands smoothly native bar.Outside forward and reverse motion that can realize by controller motor, thus convenience is watched the state of native bar and native bar is taken out in the process of rubbing.After test is complete, realize the motor backward rotation by controller, make to move axially flat board and drop to initial position and playback.
Claims (5)
1. motor-driven plate rubbing apparatus, at least comprise motor and by the gear train of driven by motor, it is characterized in that: motor is by the rotation of gear train drive shaft, main shaft is divided into thread segment and optical axis section two parts, moving axially flat board is installed on the main shaft by screw thread, form leading screw and nut mechanism, cam is fixedly installed in the optical axis section of main shaft, cam is installed on the main shaft, and cam is being fixed between two baffle plates and main shaft that moves radially dull and stereotyped middle part, move radially dull and stereotyped middle part and have through hole, two ends are provided with retracing spring, and the main shaft via through holes passes described main shaft from moving radially dull and stereotyped middle part, move axially dull and stereotyped and move radially and be provided with shell outside the flat board, main shaft is installed on the shell by bearing, moves radially flat board and is installed on the shell by retracing spring.
2. motor-driven plate rubbing apparatus according to claim 1 is characterized in that: move radially the optical axis section that flat board is positioned at main shaft, apart from terminal 3 mm of thread segment.
3. motor-driven plate rubbing apparatus according to claim 1 is characterized in that: move radially dull and stereotyped pliable and toughly and outside surface is coarse, be placed with resistance wire in it.
4. motor-driven plate rubbing apparatus according to claim 1, it is characterized in that: gear train is tape handler or chain-drive mechanism.
5. motor-driven plate rubbing apparatus according to claim 1 is characterized in that: the shell below is provided with base, and base is provided with the balance globule, and the base below is provided with the adjusting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010028924 CN101769915B (en) | 2010-01-07 | 2010-01-07 | Motor-driven plate rubbing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010028924 CN101769915B (en) | 2010-01-07 | 2010-01-07 | Motor-driven plate rubbing apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101769915A CN101769915A (en) | 2010-07-07 |
| CN101769915B true CN101769915B (en) | 2013-04-03 |
Family
ID=42502904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010028924 Expired - Fee Related CN101769915B (en) | 2010-01-07 | 2010-01-07 | Motor-driven plate rubbing apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101769915B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5027660A (en) * | 1990-09-27 | 1991-07-02 | Greikspoor Daniel M | Soil plastic limit testing device |
| CN2290055Y (en) * | 1996-12-03 | 1998-09-02 | 湖南省交通科学研究所 | Intelligent soil liquid plastic limit combined tester |
| GB2443537A (en) * | 2006-11-01 | 2008-05-07 | Graham Edward Barnes | Measuring plastic properties of a substance, eg soil |
-
2010
- 2010-01-07 CN CN 201010028924 patent/CN101769915B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5027660A (en) * | 1990-09-27 | 1991-07-02 | Greikspoor Daniel M | Soil plastic limit testing device |
| CN2290055Y (en) * | 1996-12-03 | 1998-09-02 | 湖南省交通科学研究所 | Intelligent soil liquid plastic limit combined tester |
| GB2443537A (en) * | 2006-11-01 | 2008-05-07 | Graham Edward Barnes | Measuring plastic properties of a substance, eg soil |
Non-Patent Citations (2)
| Title |
|---|
| 向卫国等.微型自动塑限仪研制初探.《安全与环境工程》.2007,第14卷(第4期),111-113. |
| 微型自动塑限仪研制初探;向卫国等;《安全与环境工程》;20071231;第14卷(第4期);111-113 * |
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| Publication number | Publication date |
|---|---|
| CN101769915A (en) | 2010-07-07 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20160107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |