CN109557024A - The detection device of frictional force between a kind of detection cereal-granules - Google Patents
The detection device of frictional force between a kind of detection cereal-granules Download PDFInfo
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- CN109557024A CN109557024A CN201811473079.4A CN201811473079A CN109557024A CN 109557024 A CN109557024 A CN 109557024A CN 201811473079 A CN201811473079 A CN 201811473079A CN 109557024 A CN109557024 A CN 109557024A
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- cereal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to a kind of detection devices of frictional force between detection cereal-granules.Detection device includes the container for granule for holding cereal-granules, it further include the friction-bar for being inserted into the container for granule for being contained with cereal-granules and the driving mechanism for pushing or pulling to friction-bar, uniform adhesion has cereal-granules on the outer peripheral surface of friction-bar, and the spring and force snesor of transmitting thrust or pulling force are equipped between driving mechanism and friction-bar.In detection device work, by uniform adhesion cereal-granules in friction-bar, under the thrust or pulling force effect of driving mechanism setting, by spring, force snesor drive friction-bar even into or exit container for granule where cereal-granules, it not yet moves in friction-bar, move suddenly, uniformly moving under three kinds of states, stiction, maximum static friction force, force of sliding friction in the cereal-granules and container for granule adhered in friction-bar between particle can be successively measured by force snesor, and then fully understands the frictional force between particle and particle.
Description
Technical field
The present invention relates to a kind of detection devices of frictional force between detection cereal-granules.
Background technique
In foodstuff preservation, the frictional force between cereal-granules has the stress of silo bulkhead important influence, bulkhead
Stress is excessive, it is possible that damaging to silo, and then the service life of silo is caused to reduce, therefore, between cereal-granules
The research of frictional force also becomes more and more important.Such as the Chinese invention patent application text that application publication number is CN108535179A
Part discloses a kind of particulate matter linearly reciprocal shearing motion mechanical property testing platform, including for loading particulate matter to be tested
The magazine of matter, upper clamp plate is arranged in charge mechanism and moves back and forth along horizontal direction, under being arranged in below upper clamp plate
Clamping plate is used to support the upper clamp plate and with the movement of upper clamp plate synchronous reciprocating, lower clamp plate and upper clamp plate gap arrangement and therebetween
It is connected by pressure sensor, pressure sensor drives for acquiring the pressure that particulate matter acts on lower clamp plate vertical direction
Motivation structure is then used to that upper clamp plate and lower clamp plate horizontal direction to be driven to move back and forth.
It is not difficult to find that the only frictional force between particle and corresponding clamping plate of said mechanism detection, and particle can not be detected
Frictional force between particle, thus can not fully understand that frictional force is to the stressing influence of silo bulkhead between cereal-granules.
Summary of the invention
The purpose of the present invention is to provide a kind of detection devices of frictional force between detection cereal-granules, to solve existing skill
The problem of detection device in art can not detect frictional force between particle and particle.
To achieve the goals above, the detection device of frictional force uses following technical side between present invention detection cereal-granules
Case:
The detection device of frictional force further includes including the container for granule for holding cereal-granules between a kind of detection cereal-granules
For being inserted into the friction-bar for being contained with the container for granule of cereal-granules and the driving machine for pushing or pulling to friction-bar
Structure, uniform adhesion has cereal-granules on the outer peripheral surface of the friction-bar, be equipped between driving mechanism and friction-bar transmitting thrust or
The spring and force snesor of pulling force.
Beneficial effects of the present invention: in detection device work, by uniform adhesion cereal-granules in friction-bar, in driving machine
Under the thrust or pulling force effect of structure setting, by spring, force snesor drive friction-bar even into or exit cereal-granules institute
Container for granule, not yet move in friction-bar, move suddenly, uniformly moving under three kinds of states, can be successively by force snesor
Measure stiction, the maximum static friction force, sliding in the cereal-granules and container for granule adhered in friction-bar between particle
Frictional force, and then fully understand the frictional force between particle and particle.
Further, it is equipped on the outside of the container for granule and loads system for the confining pressure to particle loaded confining pressure in container for granule
System.Apply different pressure to container for granule by confining pressure loading system, can measure in the case of different pressures between cereal-granules
Frictional force situation, and then more fully understand the frictional force between particle and particle.
Further, the driving mechanism is used to apply pulling force or thrust along the vertical direction to friction-bar.Due to friction
When stick moves in container for granule, the movement of the cereal-granules in container for granule mostly occurs in the vertical direction, by driving mechanism
The pulling force apply to friction-bar or thrust setting in the vertical direction, are more nearly actual conditions.
Further, the driving device is lifting instrument, and the force snesor is connected on lifting instrument, the spring setting
Between force snesor and friction-bar.Directly it is connected with friction-bar compared to sensor, spring is easier to be consolidated with friction-bar
Even.
Further, the spring is tension spring, and driving mechanism applies pulling force to tension spring and force snesor to drive friction-bar
It is mobile.The own characteristic that tension spring is axially pulled determines that tension spring is convenient for that friction-bar will be passed to from the pulling force of lifting instrument.
Further, the force sensor signals are connected with data acquisition conversion system.Data acquire conversion system and can incite somebody to action
It is handled by the voltage signal that force snesor is perceived, and obtains corresponding digital signal, thus between particle and particle
Frictional force carry out related data analysis to be directly displayed on data acquisition conversion system.
Further, the friction-bar is metal bar.It is carried out since friction-bar need to enter in container for granule with cereal-granules
Contact, to avoid contacting with cereal-granules for a long time and the deformation for leading to friction-bar and then frictional force between influence particle and particle
Detection, spy select friction-bar for metal bar.
Detailed description of the invention
The operation schematic diagram of Fig. 1 detection device of frictional force between detection cereal-granules of the invention；
Appended drawing reference: 1- goes up and down instrument, 2- force snesor, 3- tension spring, 4- metal bar, 5- plexiglass box, 6- triaxial apparatus, 7- paddy
Composition granule, 8- data conversion system, 9- data collection system, 10- data line.
Specific embodiment
Specific embodiments of the present invention are described further with reference to the accompanying drawing.
The embodiment of the detection device of frictional force between present invention detection cereal-granules: as shown in Figure 1, will contain on the table
There is the plexiglass box 5 of cereal-granules 7 to be fixed, and triaxial apparatus 6 is set on the outside of plexiglass box 5, triaxial apparatus 6 can
Numerical value of the frictional force under different confining pressures the confining pressure applied between plexiglass box 5 is changed to measure cereal-granules 7, it is organic
Metal bar 4 is placed in glass container 5, uniform adhesion there are cereal-granules 7 on metal bar 4, so that the cereal-granules on metal bar 4
7 can be in contact with the cereal-granules 7 in plexiglass box 5, be connected with tension spring 3, force snesor in turn in the top of metal bar 4
Pulling force is passed to metal bar 4 by force snesor 2, tension spring 3 with lifting instrument 1, lifting instrument 1 by 2, when lifting instrument 1 passes through power sensing
Device 2, tension spring 3 drive metal bar 4 from plexiglass box 5 along the vertical direction uplink when, force snesor 2 is by 4 upper valley of metal bar
The frictional force between cereal-granules 7 in composition granule 7 and plexiglass box 5 is made as voltage signal and is passed by data line 10
Pass data acquisition conversion system.
Data acquisition conversion system specifically includes data conversion system 8 and data collection system 9, when force snesor 2 will be electric
After pressure signal passes to data conversion system 8 by data line 10, which is that standard is believed by the processing of data conversion system 8
Number, capture card is installed in the computer of data conversion system 8, standard signal is made to be transmitted to capture card, is acquired by process control
Card A/D converter is AD converted input signal, obtains the binary digital signal having functional relation with input voltage, number
Signal is fed through data collection system 9 immediately and completes a data collection.
The detection device of frictional force at work, is held organic glass by triaxial apparatus 6 between present invention detection cereal-granules
Device 5 applies certain confining pressure, and control lifting instrument 1 is by force snesor 2, tension spring 3 to the metal being placed in plexiglass box 5
Stick 4 applies pulling force, the uplink along the vertical direction therewith of metal bar 4, on metal bar 4 cereal-granules 7 of uniform adhesion therewith with it is organic
Cereal-granules 7 in glass container 5 rub, and metal bar 4 is not yet moved, moved suddenly, uniformly moving three by force snesor 2
Frictional force under kind of state is made as voltage signal, and passes to data conversion system 8 by data line 10, the voltage signal with
It is treated as standard signal, and capture card is installed in the computer of data conversion system 8, standard signal is made to be transmitted to acquisition
Card, and input signal is AD converted by process control capture card A/D converter, it obtains having functional relation with input voltage
Binary digital signal, digital signal is fed through data collection system 9 immediately, completes a data collection；Then, change
The confining pressure that triaxial apparatus 6 applies plexiglass box 5, measures again and completes data collection, when triaxial apparatus 6 is varied multiple times
To plexiglass box 5 apply confining pressure, and complete multiple groups collect data after, in the case of understanding different pressures that can be more accurate
Frictional force in cereal between particle and particle.
It should be pointed out that above-mentioned mentioned cereal-granules 7 include wheat, corn and soybean etc..
In the present embodiment, lifting instrument applies upward pulling force to metal bar by force snesor, tension spring, in other implementations
In example, lifting instrument can also apply thrust to metal bar by force snesor, pressure spring, at this point, metal bar is from plexiglass box
Downlink；Or lifting instrument, force snesor and tension spring are arranged below plexiglass box, lifting instrument moves up through power biography
Sensor, pressure spring apply thrust to metal bar.
In the present embodiment, metal bar uplink along the vertical direction under the driving of lifting instrument, in other embodiments, metal
Stick can be in tilted layout in plexiglass box, at this point, the position of adjustment lifting instrument, applies inclined pulling force to metal bar or push away
Power.
In the present embodiment, lifting instrument is sequentially connected force snesor, tension spring, metal bar, in other embodiments, due to simultaneously
Do not influence test effect, the position of force snesor and tension spring can be interchanged.
In the present embodiment, for avoid contacting with cereal-granules for a long time and lead to the deformation of friction-bar so influence particle with
The detection of frictional force between particle, spy select friction-bar for metal bar.In other embodiments, friction-bar can also be non-for hard
Metal bar, such as glass bar.
In the present embodiment, driving device is lifting instrument, in other embodiments, equally can provide pulling force or thrust
In the case of, driving device may be alternatively provided as cylinder, hydraulic cylinder or electric cylinder.
In the present embodiment, it can be measured not as the triaxial apparatus of confining pressure loading system tool by applying different confining pressures
With the frictional force in cereal under pressure between particle and particle, in other embodiments, it can also be not provided with confining pressure loading system, only
Detect the frictional force in a kind of situation.
In the present embodiment, container for granule uses plexiglass box, and in other embodiments, container for granule can also be used
The container of other materials.
In the present embodiment, force sensor signals are connected with data acquisition conversion system.In other embodiments, may be used not
It connects data and acquires conversion system, the voltage signal of acquisition can be first stored in force snesor, after waiting tests, then be connected
Data acquisition conversion system is connect to be shown.
Claims (7)
1. the detection device of frictional force, special including the container for granule for holding cereal-granules between a kind of detection cereal-granules
Sign is: further include friction-bar for being inserted into the container for granule for being contained with cereal-granules and for friction-bar apply thrust or
The driving mechanism of pulling force, uniform adhesion has cereal-granules on the outer peripheral surface of the friction-bar, sets between driving mechanism and friction-bar
There are the spring and force snesor of transmitting thrust or pulling force.
2. the detection device of frictional force between detection cereal-granules according to claim 1, it is characterised in that: the particle holds
It is equipped on the outside of device for the confining pressure loading system to the cereal-granules load confining pressure in container for granule.
3. the detection device of frictional force between detection cereal-granules according to claim 1 or 2, it is characterised in that: described to rub
It wipes stick to be contained in the container for granule of cereal-granules for insertion along the vertical direction, the driving mechanism is used to apply to friction-bar
Pulling force or thrust along the vertical direction.
4. the detection device of frictional force between detection cereal-granules according to claim 1 or 2, it is characterised in that: the power
Sensor is connected in driving mechanism, and the spring is arranged between force snesor and friction-bar.
5. the detection device of frictional force between detection cereal-granules according to claim 4, it is characterised in that: the spring is
Tension spring, driving mechanism apply pulling force to force snesor and tension spring to drive friction-bar mobile.
6. the detection device of frictional force between detection cereal-granules according to claim 1 or 2, it is characterised in that: the power
Sensor signal is connected with data acquisition conversion system.
7. the detection device of frictional force between detection cereal-granules according to claim 1 or 2, it is characterised in that: described to rub
Wiping stick is metal bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473079.4A CN109557024A (en) | 2018-12-04 | 2018-12-04 | The detection device of frictional force between a kind of detection cereal-granules |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811473079.4A CN109557024A (en) | 2018-12-04 | 2018-12-04 | The detection device of frictional force between a kind of detection cereal-granules |
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| CN109557024A true CN109557024A (en) | 2019-04-02 |
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| CN201811473079.4A Pending CN109557024A (en) | 2018-12-04 | 2018-12-04 | The detection device of frictional force between a kind of detection cereal-granules |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007004A (en) * | 2019-12-13 | 2020-04-14 | 广东冠粤路桥有限公司 | Coarse aggregate rolling friction resistance measuring device and measuring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003067980A (en) * | 2001-08-29 | 2003-03-07 | Tdk Corp | Measuring method of friction on optical recording medium surface |
| CN101487782A (en) * | 2008-01-17 | 2009-07-22 | 北京东孚久恒仪器技术有限公司 | Cereal particle hardness measurement method and its hardness measurement instrument |
| EP2146196A2 (en) * | 2008-07-15 | 2010-01-20 | Politechnika Lubelska | Method and device for control of elements in particular polymers while sliding influences |
| CN106769843A (en) * | 2017-01-12 | 2017-05-31 | 西南石油大学 | A kind of drilling leakage blockage material friction coefficient measuring method and device |
| CN206515200U (en) * | 2016-10-20 | 2017-09-22 | 北京印刷学院 | A kind of intergranular friction force tester |
-
2018
- 2018-12-04 CN CN201811473079.4A patent/CN109557024A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003067980A (en) * | 2001-08-29 | 2003-03-07 | Tdk Corp | Measuring method of friction on optical recording medium surface |
| CN101487782A (en) * | 2008-01-17 | 2009-07-22 | 北京东孚久恒仪器技术有限公司 | Cereal particle hardness measurement method and its hardness measurement instrument |
| EP2146196A2 (en) * | 2008-07-15 | 2010-01-20 | Politechnika Lubelska | Method and device for control of elements in particular polymers while sliding influences |
| CN206515200U (en) * | 2016-10-20 | 2017-09-22 | 北京印刷学院 | A kind of intergranular friction force tester |
| CN106769843A (en) * | 2017-01-12 | 2017-05-31 | 西南石油大学 | A kind of drilling leakage blockage material friction coefficient measuring method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111007004A (en) * | 2019-12-13 | 2020-04-14 | 广东冠粤路桥有限公司 | Coarse aggregate rolling friction resistance measuring device and measuring method |
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Application publication date: 20190402 |