CN105675486B - Measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction - Google Patents
Measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction Download PDFInfo
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- CN105675486B CN105675486B CN201610114838.2A CN201610114838A CN105675486B CN 105675486 B CN105675486 B CN 105675486B CN 201610114838 A CN201610114838 A CN 201610114838A CN 105675486 B CN105675486 B CN 105675486B
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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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Abstract
The invention discloses a kind of measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction, the bin stock drawing mechanism is arranged on above the climbing section of straight trip climbing belt conveyer, bin stock retracting device is arranged on the straight trip section end of straight trip climbing belt conveyer, bin stock to be measured is arranged in bin stock drawing mechanism, silo bulkhead sample to be measured is arranged on straight trip climbing belt conveyer, its one end is above straight trip climbing belt conveyer climbing section, the other end is in straight trip climbing belt conveyer straight trip section, silo bulkhead sample to be measured is provided with geometrical clamp, geometrical clamp is connected by connecting rod and dynamometer, straight trip section of the position of the dynamometer higher than straight trip climbing belt conveyer, dynamometer is connected with data acquisition device.The present invention both can accurately measure the coefficient of friction between silo bulkhead to be measured and bin stock to be measured, the change for the coefficient of friction that can also dynamically observe between silo bulkhead to be measured and bin stock to be measured, while realize detection and monitoring to the silo bulkhead degree of wear to be measured.
Description
Technical field
The invention belongs to construction engineering test field, and in particular to a kind of measuring cylinder silo wall and the reality of bin stock coefficient of friction
Experiment device.
Background technology
, it is necessary to consider the frictional force between silo bulkhead and bin stock in Design of Silo, in silo construction engineering test,
It is also required to measure the frictional force between silo bulkhead and bin stock.
Cao Xianjun exists《Ramp type frictionmeter》In propose a kind of measurement spinning, drawing rubber parts coefficient of friction
Method, sample to be tested is first placed on slide plate during measurement, then manually lifts slide plate to sample just along slide plate slides, then lead to
Cross the coefficient of friction that sample and slide plate is simply calculated.Specification requirement of this measuring method to sample is higher, uncomfortable
It is suitable for the measurement of bulk cargo coefficient of friction, influence of the manual operation to experimental result is also bigger.
Cheng Hongsheng etc. exists《A kind of design of agricultural material coefficient of sliding friction measurement apparatus》In propose a kind of agriculture thing
Expect coefficient of sliding friction method for automatic measurement, they devise a kind of agricultural according to inclined-plane mechanics principle and photoelectricity test technology
Material coefficient of sliding friction self-operated measuring unit, and by taking lichee as an example, measured between lichee pericarp and rubber slab and nylon sheet
The coefficient of sliding friction.This method is suitable for measuring the coefficient of friction of the larger material of particle, for the less material of particle, surveys
Dose-effect fruit is simultaneously bad；This method requires high to accuracy of instrument, and installation cost is bigger.
The content of the invention
, both can essence it is an object of the invention to provide a kind of measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction
The coefficient of friction between silo bulkhead to be measured and bin stock to be measured is really measured, can also dynamically observe silo bulkhead to be measured and storage to be measured
The change of coefficient of friction between material, while realize detection and monitoring to the silo bulkhead degree of wear to be measured.
The technical solution for realizing the object of the invention is：A kind of measuring cylinder silo wall and the experiment of bin stock coefficient of friction fill
Put, including straight trip climbing belt conveyer, geometrical clamp, connecting rod, dynamometer, data acquisition device, bin stock drawing mechanism, bin stock return
Receiving apparatus.
The bin stock drawing mechanism is arranged on above the climbing section of straight trip climbing belt conveyer, and bin stock retracting device is set
In end of the straight trip section away from climbing section of straight trip climbing belt conveyer, bin stock to be measured is arranged in bin stock drawing mechanism, made
Obtain the bin stock to be measured in bin stock drawing mechanism to fall in the climbing section of straight trip climbing belt conveyer, through climbing belt transmission of keeping straight on
Machine transmits, and falls into bin stock retracting device；Silo bulkhead sample to be measured is arranged on straight trip climbing belt conveyer, its one end position
Above straight trip climbing belt conveyer climbing section, the other end is in straight trip climbing belt conveyer straight trip section, silo to be measured
Bulkhead sample is provided with geometrical clamp, and geometrical clamp is connected by connecting rod and dynamometer, and the position of the dynamometer is climbed higher than straight trip
The straight trip section of belt conveyor；Dynamometer is connected with data acquisition device.
The straight trip section of the dynamometer and straight trip climbing belt conveyer between the two the discrepancy in elevation for one layer of bin stock to be measured thickness
Degree.
Also include weightening block, the weightening block is fixed at the top of silo bulkhead sample to be measured.
The weightening block is located at the top center of silo bulkhead sample to be measured.
The belt of the bin stock to be measured and straight trip climbing belt conveyer geo-stationary in transmitting procedure.
The dynamometer and bin stock drawing mechanism homonymy, bin stock drawing mechanism do not contact with connecting rod.
The present invention compared with prior art, its remarkable advantage：
(1) the straight trip section of dynamometer and straight trip climbing belt conveyer between the two the discrepancy in elevation for one layer of bin stock to be measured thickness
Degree, eliminates interference of the silo bulkhead sample partical gravity to be measured to experimental result so that measurement accuracy is higher.
(2) the fixed weightening block on silo bulkhead sample to be measured, ensure that silo bulkhead sample to be measured operates work in device
Stability in journey, while avoid because of the inclined bottom of measurement accuracy caused by frictional force is too small the problem of so that measurement accuracy is higher.
(3) suitable for the measurement of coefficient of friction between the bin stock and silo bulkhead of variable grain size.
(4) change for the coefficient of friction that can dynamically observe between silo bulkhead to be measured and bin stock to be measured, detection silo storehouse
The degree of wear of wall.
The present invention is described in further detail below in conjunction with the accompanying drawings.
Brief description of the drawings
Fig. 1 is the overall structure diagram of measuring cylinder silo wall of the present invention and the experimental provision of bin stock coefficient of friction.
Embodiment
With reference to Fig. 1, a kind of measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction, including straight trip climbing belt transmission
Machine 1 (purchased in market), silo bulkhead sample 2 to be measured, geometrical clamp 3, connecting rod 4, dynamometer 5 (purchased in market), data acquisition device 6 (purchased in market),
Bin stock 7 to be measured, bin stock drawing mechanism 8 (purchased in market), bin stock retracting device 9 (purchased in market).
The bin stock drawing mechanism 8 is arranged on above the climbing section of straight trip climbing belt conveyer 1, bin stock retracting device 9
It is arranged on the end of the straight trip section of straight trip climbing belt conveyer 1, the end is one end away from section of climbing, bin stock 7 to be measured
It is arranged in bin stock drawing mechanism 8 so that fall on straight trip climbing belt conveyer 1 from the bin stock to be measured 7 in bin stock drawing mechanism 8
Climbing section on, through keep straight on climbing belt conveyer 1 transmit, fall into bin stock retracting device 9.Silo bulkhead sample 2 to be measured is set
Put on straight trip climbing belt conveyer 1, its one end is climbed positioned at straight trip climbing belt conveyer 1 above section, and the other end is located at
Climbing belt of keeping straight on conveyer 1 is kept straight on above section, and silo bulkhead sample 2 to be measured is provided with geometrical clamp 3, and geometrical clamp 3 passes through connecting rod 4
It is connected with dynamometer 5, the position of the dynamometer 5 is higher than the straight trip section of straight trip climbing belt conveyer 1；Dynamometer 5 and data
Harvester 6 connects.
Further, the dynamometer 5 with keep straight on climbing belt conveyer 1 straight trip section between the two the discrepancy in elevation be one layer treat
Survey the thickness of bin stock 7.In device operation, what dynamometer 5 measured all the time is silo bulkhead sample 2 to be measured and bin stock to be measured
Frictional force between 7, eliminate influence of the partical gravity of silo bulkhead sample 2 to be measured to experimental result.
Further, present invention additionally comprises weightening block 10, the weightening block 10 to be fixed on silo bulkhead sample 2 to be measured and push up
Portion, 2 stability in device operation of silo bulkhead sample to be measured is ensure that, avoid and surveyed caused by frictional force is too small
The problem of accuracy of measurement is relatively low.And the weightening block 10 is located at the top center of silo bulkhead sample 2 to be measured.
Further, the belt of the straight trip climbing belt conveyer 1 is sufficiently coarse, ensures that bin stock 7 to be measured is climbed with straight trip
The belt of slope belt conveyor 1 geo-stationary in transmitting procedure, beneficial to accurately measuring bin stock 7 to be measured and silo bulkhead sample to be measured
Frictional force between sheet 2.
Further, the bin stock drawing mechanism 8 is used to launch bin stock 7 to be measured, and funnel, material leakage machine etc. can be selected.
Further, the bin stock retracting device 9 is used to collect bin stock 7 to be measured, and recycling bin, collection box etc. can be selected.
Further, the data acquisition device 6 is used for the frictional force data for gathering the survey of dynamometer 5, and PC can be selected or deposit
Card storage etc..
Further, dynamometer 5 is set with the homonymy of bin stock drawing mechanism 8, it is ensured that what silo bulkhead sample 2 to be measured was subject to rubs
It is identical with the direction of motion of bin stock 7 to be measured to wipe force direction.Connecting rod 4 does not contact with bin stock drawing mechanism 8.
The course of work is as follows：
Load bin stock 7 to be measured in bin stock drawing mechanism 8, open the power supply of straight trip climbing belt conveyer 1, straight trip climbing
Belt conveyor 1 is started working, and opens the discharging opening of bin stock drawing mechanism 8, and bin stock 7 to be measured falls in straight trip climbing belt conveyer 1
Climbing section on, because the position of dynamometer 5 is higher than the straight trip section of straight trip climbing belt conveyer 1, and bin stock to be measured 7 and straight trip
The belt of climbing belt conveyer 1 geo-stationary in transmitting procedure, therefore bin stock to be measured 7 can smoothly enter straight trip climbing belt and pass
Send between the straight trip section of machine 1 and silo bulkhead sample 2 to be measured, rubbed with silo bulkhead sample 2 to be measured, dynamometer 5 is real-time
Frictional force is obtained, while timing, the collection of data acquisition device 6 and processing data are carried out using data acquisition device 6.
If silo bulkhead sample 2 to be measured is fixed in horizontal slide rail so that silo bulkhead sample 2 to be measured can be along cunning
Rail slides, and then carries out the measurement of frictional force, the frictional force that can cause to measure is not pure silo bulkhead sample 2 to be measured with treating
The frictional force surveyed between bin stock 7, further comprises the frictional force between silo bulkhead sample 2 and slide rail to be measured.
Embodiment 1
A kind of measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction, the including (city of straight trip climbing belt conveyer 1
Purchase), silo bulkhead sample 2 to be measured, geometrical clamp 3, connecting rod 4, dynamometer 5 (purchased in market), data acquisition device 6 (purchased in market), storage to be measured
Material 7, bin stock drawing mechanism 8 (purchased in market), bin stock retracting device 9 (purchased in market).
The bin stock drawing mechanism 8 is arranged on above the climbing section of straight trip climbing belt conveyer 1, bin stock retracting device 9
It is arranged on the end of the straight trip section of straight trip climbing belt conveyer 1, the end is one end away from section of climbing, bin stock 7 to be measured
It is arranged in bin stock drawing mechanism 8 so that fall on straight trip climbing belt conveyer 1 from the bin stock to be measured 7 in bin stock drawing mechanism 8
Climbing section on, through keep straight on climbing belt conveyer 1 transmit, fall into bin stock retracting device 9.Silo bulkhead sample 2 to be measured is set
Put on straight trip climbing belt conveyer 1, its one end is climbed positioned at straight trip climbing belt conveyer 1 above section, and the other end is located at
Climbing belt of keeping straight on conveyer 1 is kept straight on above section, and silo bulkhead sample 2 to be measured is provided with geometrical clamp 3, and geometrical clamp 3 passes through connecting rod 4
It is connected with dynamometer 5, the position of the dynamometer 5 is higher than the straight trip section of straight trip climbing belt conveyer 1；Dynamometer 5 and data
Harvester 6 connects.
The discrepancy in elevation is one layer of bin stock 7 to be measured to the straight trip section of the dynamometer 5 and straight trip climbing belt conveyer 1 between the two
Thickness.
Also include weightening block 10, the weightening block 10 is fixed on the top of silo bulkhead sample 2 to be measured.
The weightening block 10 is located at the top center of silo bulkhead sample 2 to be measured.
The belt of the bin stock to be measured 7 and straight trip climbing belt conveyer 1 geo-stationary in transmitting procedure.
Dynamometer 5 is set with the homonymy of bin stock drawing mechanism 8, it is ensured that the direction that silo bulkhead sample 2 to be measured is subject to
It is identical with the direction of motion of bin stock 7 to be measured.
The concrete slab that silo bulkhead sample 2 to be measured is C40 from the intensity of making in laboratory, data acquisition device 6 are adopted
With PC, using the clinker (mean particle size 15mm) of purchase, dynamometer 5 and straight trip climbing belt pass bin stock 7 to be measured
Sending the straight trip section of machine 1, the discrepancy in elevation is 15mm between the two, and bin stock drawing mechanism 8 selects funnel, and funnel discharging opening is provided with switch valve, storage
Material retracting device 9 uses recycling bin.
The mass 3.86kg of silo bulkhead sample 2 to be measured, the geometrical clamp 3 and gross mass 0.46kg of connecting rod 4, increase weight the mass of block 10
3kg, above-mentioned four total force are N=(3.86+0.46+3) × 9.8=71.736N.
Load bin stock 7 to be measured in bin stock drawing mechanism 8, open the power supply of straight trip climbing belt conveyer 1, straight trip climbing
Belt conveyor 1 is started working, and opens the switch valve of the discharging opening of bin stock drawing mechanism 8, while is carried out using data acquisition device 6
Timing, the collection of data acquisition device 6 and processing data.Friction coefficient μ between silo bulkhead sample 2 and bin stock to be measured 7 to be measured
Calculated by formula μ=f/N, following table lists 6 groups of measurement data.
The measurement data table of the frictional force of table 1 and coefficient of friction
The present invention is applied to the measurement of coefficient of friction between the bin stock and bulkhead of variable grain size, both can accurately measure
Coefficient of friction between silo bulkhead and bin stock, the friction system that can also dynamically observe between silo bulkhead to be measured and bin stock to be measured
Several changes, while realize detection and monitoring to the silo bulkhead degree of wear.
Claims (6)
1. a kind of measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction, it is characterised in that：Passed including straight trip climbing belt
Send machine（1）, geometrical clamp（3）, connecting rod（4）, dynamometer（5）, data acquisition device（6）, bin stock drawing mechanism（8）, bin stock recovery
Device（9）；
The bin stock drawing mechanism（8）It is arranged on straight trip climbing belt conveyer（1）Climbing section above, bin stock retracting device
（9）It is arranged on straight trip climbing belt conveyer（1）Straight trip section away from climbing section end, bin stock to be measured（7）It is arranged on bin stock
Drawing mechanism（8）It is interior so that bin stock drawing mechanism（8）In bin stock to be measured（7）Fall on straight trip climbing belt conveyer（1）Climb
In the section of slope, through climbing belt conveyer of keeping straight on（1）Transmission, falls into bin stock retracting device（9）In；Silo bulkhead sample to be measured（2）
It is arranged on straight trip climbing belt conveyer（1）On, its one end is positioned at straight trip climbing belt conveyer（1）It is another above section of climbing
End is positioned at straight trip climbing belt conveyer（1）In section of keeping straight on, silo bulkhead sample to be measured（2）It is provided with geometrical clamp（3）, geometrical clamp
（3）Pass through connecting rod（4）With dynamometer（5）It is connected, the dynamometer（5）Position higher than straight trip climbing belt conveyer（1）'s
Straight trip section；Dynamometer（5）With data acquisition device（6）Connection.
2. measuring cylinder silo wall according to claim 1 and the experimental provision of bin stock coefficient of friction, it is characterised in that：It is described
Dynamometer（5）With climbing belt conveyer of keeping straight on（1）Straight trip section the discrepancy in elevation is one layer of bin stock to be measured between the two（7）Thickness.
3. measuring cylinder silo wall according to claim 1 and the experimental provision of bin stock coefficient of friction, it is characterised in that：Also wrap
Include weightening block（10）, the weightening block（10）It is fixed on silo bulkhead sample to be measured（2）Top.
4. measuring cylinder silo wall according to claim 3 and the experimental provision of bin stock coefficient of friction, it is characterised in that：It is described
Increase weight block（10）Positioned at silo bulkhead sample to be measured（2）Top center.
5. measuring cylinder silo wall according to claim 1 and the experimental provision of bin stock coefficient of friction, it is characterised in that：It is described
Bin stock to be measured（7）With climbing belt conveyer of keeping straight on（1）Belt in transmitting procedure geo-stationary.
6. measuring cylinder silo wall according to claim 1 and the experimental provision of bin stock coefficient of friction, it is characterised in that：It is described
Dynamometer（5）With bin stock drawing mechanism（8）Homonymy, bin stock drawing mechanism（8）With connecting rod（4）Do not contact.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114838.2A CN105675486B (en) | 2016-03-01 | 2016-03-01 | Measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610114838.2A CN105675486B (en) | 2016-03-01 | 2016-03-01 | Measuring cylinder silo wall and the experimental provision of bin stock coefficient of friction |
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| Publication Number | Publication Date |
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| CN105675486A CN105675486A (en) | 2016-06-15 |
| CN105675486B true CN105675486B (en) | 2018-03-09 |
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2016
- 2016-03-01 CN CN201610114838.2A patent/CN105675486B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008304187A (en) * | 2007-06-05 | 2008-12-18 | Mitsuboshi Belting Ltd | Belt clamping device, belt clamping method using it and friction coefficient measuring instrument using belt clamping device |
| JP4968008B2 (en) * | 2007-11-16 | 2012-07-04 | 横浜ゴム株式会社 | Method and apparatus for testing dynamic friction of vulcanized rubber |
| CN102878910A (en) * | 2012-10-26 | 2013-01-16 | 中国农业大学 | Inclined plane instrument device for measuring friction coefficient and friction angle of granular materials |
| CN103091245A (en) * | 2012-12-17 | 2013-05-08 | 江苏大学 | Device and method for measuring poultry egg static friction coefficient |
| CN104020102A (en) * | 2014-06-18 | 2014-09-03 | 河南科技大学 | Device and method for measuring dynamic friction coefficients of surfaces of cereal grains and measuring method |
| CN204373577U (en) * | 2015-01-18 | 2015-06-03 | 佳木斯大学 | A kind of prose style free from parallelism agricultural material sliding friction angle measuring device |
| CN205404376U (en) * | 2016-03-01 | 2016-07-27 | 南京理工大学 | Experimental device for measure silo bulkhead and bin stock coefficient of friction |
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