CN101750246A - Two-way speed regulation strip rubbing instrument - Google Patents
Two-way speed regulation strip rubbing instrument Download PDFInfo
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- CN101750246A CN101750246A CN201010028923A CN201010028923A CN101750246A CN 101750246 A CN101750246 A CN 101750246A CN 201010028923 A CN201010028923 A CN 201010028923A CN 201010028923 A CN201010028923 A CN 201010028923A CN 101750246 A CN101750246 A CN 101750246A
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- motor
- speed regulation
- way speed
- regulation strip
- reciprocating movement
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Abstract
The invention provides a two-way speed regulation strip rubbing instrument which is used to determine the plastic limit water content of soil, and at least comprises motors and transmission mechanisms driven by the motors; a motor A drives a screw rod in a screw rod nut mechanism to rotate through a transmission mechanism A; a nut in the screw rod nut mechanism is provided with a vertical lifting motion flat slab; and a motor B drives a horizontal replicating motion flat slab arranged in a guide rail through a transmission mechanism B. On the basis of rolling rubbing to soil strips through manual simulation, the electric flat slab strip rubbing instrument can control the motion states and the heating parts of corresponding motors through various controllers, to control the motion states of the horizontal replicating motion flat slab and the vertical lifting motion flat slab and the heating states of the heating parts, so as to quickly determine the plastic limit water content of the soil with high efficiency and reduce artificial factors, so that the concept of the plastic limit of the soil with a clear physical meaning can be accurately determined through the instrument.
Description
Technical field:
The present invention relates to a kind of two-way speed regulation strip rubbing instrument, for being used to measure 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 grogs and water interaction in essence.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, this 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, and this study, very inconvenient operating for the operator of no practical experience or beginner, 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 the experimental apparatus of stranding method is rolled in a kind of simulation of development, can record the plastic limit water cut with clear and definite physical meaning accurately, accurately and efficiently, and is extremely urgent.
Summary of the invention:
For overcoming above-mentioned the deficiencies in the prior art, the invention provides a kind of two-way speed regulation strip rubbing instrument, this two-way speed regulation strip rubbing instrument rolls on the basis of stranding native bar by hand in simulation, plastic limit water cut be not only can record accurately, accurately and efficiently, and the various restrictions and the defective of artificial rubbing avoided with clear and definite physical meaning.
The present invention realizes that technical scheme that its purpose adopts is that a kind of two-way speed regulation strip rubbing instrument comprises motor and at least by the gear train of driven by motor, motor A rotates by the screw mandrel that gear train A drives in the leading screw and nut mechanism, nut in the leading screw and nut mechanism is provided with the vertical lifting exercise stress, and motor B drives the horizontal reciprocating movement flat board that is positioned at guide rail by gear train B.。
And gear train A is gear drive, tape handler or chain-drive mechanism.Gear train B is a toggle, and connecting rod one end in the toggle is connected with crank, and the other end is connected with an end of horizontal reciprocating movement flat board.Motor A, motor B are respectively equipped with corresponding controller A, controller B outward.
And the horizontal reciprocating movement flat board is made up of two flat boards that are connected through the hinge.The top of hinge connection is provided with latch.The horizontal reciprocating movement flat board is pliable and tough and outside surface is coarse, is placed with resistance wire in it.
As shown from the above technical solution, two-way speed regulation strip rubbing instrument critical piece provided by the invention is motor A, motor B and respectively by motor A, motor B is by corresponding gear train A, elevating movement vertically or reciprocating two flat boards of along continuous straight runs that gear train B drives, the soil bar is between two flat boards, the horizontal reciprocating movement flat board is pliable and tough and outside surface is coarse, simulation is manually rolled stranding to native bar, also be provided with resistance wire in vertical lifting exercise stress and/or the horizontal reciprocating movement flat board, can be quick, efficiently, evenly add the hometown bar, make native bar moisture quick, evenly scatter and disappear, occur the purpose that crackle is measured plastic limit 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 the experience and the shortcoming of skill fully, can record the plastic limit water cut with clear and definite physical meaning, warranty test success ratio accurately, accurately and efficiently.
Two-way speed regulation strip rubbing instrument provided by the invention also has the following advantages:
1, the flat board of two motions is driven by separately motor and gear train respectively, the motion mutually noninterfere of the two, in the practical operation, put native bar after, can allow elevating movement begin earlier, and translation be static.When treating that elevating movement makes native bar be about to contact with translatory plate, open translation again, implement operation, save energy, reduce mechanical wear.
2, the horizontal reciprocating movement flat board is made up of two flat boards that are connected through the hinge, and makes this flat board can fold, open, and checks native bar crackle situation at any time
Description of drawings:
Accompanying drawing is the structural representation of two-way speed regulation strip rubbing instrument provided by the invention.
Among the figure 1, guide rail, 2, the horizontal reciprocating movement flat board, 3, hinge, 4, latch, 5, resistance wire, 6, connecting rod, 7, crank, 8, motor B, 9, controller B, 10, native bar, 11, the vertical lifting exercise stress, 12, nut, 13, screw mandrel, 14, gear drive, 15, motor A, 16, controller A.
Embodiment:
Shown in accompanying drawing, two-way speed regulation strip rubbing instrument provided by the invention mainly comprises two parts, a part is motor A15 and the gear train A that driven by motor A15, motor A15 is provided with controller A16 outward, motor A15 is connected with controller A16 by cable, gear train A can be gear drive, tape handler or chain-drive mechanism, only be presented as gear drive 14 in the accompanying drawing, and motor A15 is by the leading screw and nut mechanism of gear drive 14 drivings, screw mandrel 13 rotations in the leading screw and nut mechanism, nut 12 is provided with vertical lifting exercise stress 11; Another part is motor B8 and the gear train B that driven by motor B8, motor B8 is provided with controller B9 outward, motor B8 is connected with controller B9 by cable, gear train B is a toggle, connecting rod 6 one ends in the toggle are connected with crank 7, and the other end is connected with an end of the horizontal reciprocating movement flat board 2 that is positioned at guide rail 1.For reducing friction, guide rail 1 is preferably spherical guide.Horizontal reciprocating movement flat board 2 is made up of two flat boards that connect by hinge 3, and the top of hinge connection is provided with latch 4, when unclamping latch 4, can raise the part of horizontal reciprocating movement flat board, and native bar is observed.The dull and stereotyped 2 pliable and tough and coarse palms with the anthropomorphic dummy of outside surface of horizontal reciprocating movement, material can be selected the class rubber slab for use.Be placed with resistance wire or other Low-temp. electrothermal device in vertical lifting exercise stress 11 and/or the horizontal reciprocating movement flat board 2.
When reality is used this two-way speed regulation strip rubbing instrument, at first regulate vertical lifting exercise stress and horizontal reciprocating movement flat board, make between the two at a certain distance, the native bar 10 of certain diameter is placed vertical lifting exercise stress middle position, make the central axis of native bar parallel with hinge axes.By controller A power-on, motor A entry into service, the screw mandrel that drives leading screw and nut mechanism by gear drive rotates, and the nut that drives on it by screw mandrel rises with the vertical lifting exercise stress that is installed on the nut again, drives native bar simultaneously and rises.When native bar is about to touch horizontal reciprocating movement when dull and stereotyped, by controller B power-on, motor B entry into service is converted to the horizontal reciprocating movement of horizontal reciprocating movement flat board along guide rail 1 by toggle with the rotation of motor.The horizontal reciprocating movement flat board rolls stranding to native bar, is decreased to 3mm up to the distance of two flat boards, stops the motion of vertical lifting exercise stress by controller A, and the horizontal reciprocating movement flat board continues to roll rubs native bar with the hands.After after a while, stop the motion of horizontal reciprocating movement flat board by controller B, unclamp latch, raise the part of horizontal reciprocating movement flat board, observe native bar, crackle appears in native bar surface, shows that the water cut of native bar this moment is the plastic limit of soil.If native bar water cut is excessive, then can make corresponding resistance wire or the energising of Low-temp. electrothermal device by controller A and/or the controller B that the control power supply breaks, make the evenly heating in being rolled the process of stranding of native bar.When experiment finishes, control motor A by controller A and turn round in the other direction, the vertical lifting exercise stress is moved downward, and then reset.
In experimentation, can control the motion state and the heater block of corresponding motor by each controller, and then the controlling level to-and-fro movement is dull and stereotyped and the motion state (as start and stop, movement velocity etc.) of vertical lifting exercise stress and the heated condition of heater block, thereby measure the plastic limit water cut of soil fast and efficiently, reduce human factor, this notion of plastic limit of the soil with clear and definite physics implication can accurately be measured by instrument.Two-way speed regulation strip rubbing instrument can make the plastic limit bioassay standardization of soil, is soil body classification based theoretical.
Claims (8)
1. two-way speed regulation strip rubbing instrument, at least comprise motor and by the gear train of driven by motor, it is characterized in that: motor A rotates by the screw mandrel that gear train A drives in the leading screw and nut mechanism, nut in the leading screw and nut mechanism is provided with the vertical lifting exercise stress, and motor B drives the horizontal reciprocating movement flat board that is positioned at guide rail by gear train B.
2. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: gear train A is gear drive, tape handler or chain-drive mechanism.
3. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: gear train B is a toggle, and connecting rod one end in the toggle is connected with crank, and the other end is connected with an end of horizontal reciprocating movement flat board.
4. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: motor A, motor B are respectively equipped with corresponding controller A, controller B outward.
5. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: the horizontal reciprocating movement flat board is made up of two flat boards that are connected through the hinge.
6. two-way speed regulation strip rubbing instrument according to claim 5 is characterized in that: the top of hinge connection is provided with latch.
7. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: the horizontal reciprocating movement flat board is pliable and tough and outside surface is coarse.
8. two-way speed regulation strip rubbing instrument according to claim 1 is characterized in that: be placed with resistance wire in vertical lifting exercise stress and/or the horizontal reciprocating movement flat board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010028923A CN101750246A (en) | 2010-01-07 | 2010-01-07 | Two-way speed regulation strip rubbing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010028923A CN101750246A (en) | 2010-01-07 | 2010-01-07 | Two-way speed regulation strip rubbing instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101750246A true CN101750246A (en) | 2010-06-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010028923A Pending CN101750246A (en) | 2010-01-07 | 2010-01-07 | Two-way speed regulation strip rubbing instrument |
Country Status (1)
| Country | Link |
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| CN (1) | CN101750246A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353161A (en) * | 2016-11-14 | 2017-01-25 | 北京市地质工程勘察院 | Tape condenser |
| CN108169127A (en) * | 2018-01-16 | 2018-06-15 | 西安建筑科技大学 | A kind of rubbing method surveys the convenient condenser and its application method of plastic limit water content |
| CN113138132A (en) * | 2020-01-17 | 2021-07-20 | 河海大学 | Device and method for measuring plastic limit of soil strip |
-
2010
- 2010-01-07 CN CN201010028923A patent/CN101750246A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353161A (en) * | 2016-11-14 | 2017-01-25 | 北京市地质工程勘察院 | Tape condenser |
| CN108169127A (en) * | 2018-01-16 | 2018-06-15 | 西安建筑科技大学 | A kind of rubbing method surveys the convenient condenser and its application method of plastic limit water content |
| CN113138132A (en) * | 2020-01-17 | 2021-07-20 | 河海大学 | Device and method for measuring plastic limit of soil strip |
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Application publication date: 20100623 |