CN202994635U - Device for measuring maximum static friction coefficient of loose material - Google Patents
Device for measuring maximum static friction coefficient of loose material Download PDFInfo
- Publication number
- CN202994635U CN202994635U CN 201220663804 CN201220663804U CN202994635U CN 202994635 U CN202994635 U CN 202994635U CN 201220663804 CN201220663804 CN 201220663804 CN 201220663804 U CN201220663804 U CN 201220663804U CN 202994635 U CN202994635 U CN 202994635U
- Authority
- CN
- China
- Prior art keywords
- static friction
- maximum static
- slide plate
- fixed
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a device which is used for measuring a maximum static friction coefficient between a loose material and other materials, and is applicable to biomass materials of agricultural and forestry as well as loose materials of other fields. According to the technical scheme, the device is characterized in that an internal gear is fixed with a pulley in a welding manner, and can rotate along with the pulley; an external gear is fixed on a support through a slide rail, can axially slide into the internal gear, and can be engaged with the internal gear, so that a slide plate can be fixed at an arbitrary rotation angle; an angular ruler is fixed on the support; a pointer rotates along with the slide plate; an angle value can be directly read by the angular ruler; and the slide plate can be detached. Planes with materials with different friction surfaces can be replaced to measure the maximum static friction coefficient between the loose material and other materials, such as metal and rubber. By virtue of the device provided by the utility model, the value of the maximum static friction angle can be directly read. The device is convenient to operate and low in cost.
Description
Technical field
A kind of bulk material coefficient of maximum static friction measurement mechanism for the coefficient of maximum static friction of measuring bulk material and other materials, is applicable to the loose class material in agricultural and forestry biomass class material and other each fields.
Background technology
The coefficient of maximum static friction assay method mostly is inclined plane method, according to mechanics principle, the body feed tank that raw material is housed is placed on the inclined-plane, if stiction greater than sliding force, object will rest on the inclined-plane, the inclined-plane increases, and body feed tank can be glided, by formula μ
s=tan α calculates.In formula, μ
sBe coefficient of maximum static friction; α is the maximum static friction angle of slide plate.This measuring method principle is comparatively simple, but proving installation mostly is the self-control Simple measurement device without the normalization finished product, and measuring accuracy is low, and measuring operation wastes time and energy.
At present, the research of the measuring friction coefficient of relevant bulk material is less, correlative study such as patent No. CN202002875U (applying date 2011.01.30), and testing precision is higher, but proving installation is comparatively complicated, and linkage part is more.The patent No. 99251092.9 (applying date 1999.10.21) makes dull and stereotyped rotational angle by the rotating shaft below dull and stereotyped, and it is comparatively accurate to test, but operation is relatively wasted time and energy.The patent No. 94222460.4 (applying date 1994.10.5) is applicable to the special-purpose measuring friction coefficient in the mass transport situation.The patent No. 95200216.7 (applying date 1995.1.9) is rubber cylinder and storeroom friction factor special detection device.
Summary of the invention
The purpose of this utility model is to provide a kind of bulk material coefficient of maximum static friction measurement mechanism, is used for measuring the coefficient of maximum static friction of bulk material and other materials, is applicable to the loose class material in agricultural and forestry biomass class material and other each fields.Adopt directly reading of this device to test maximum static friction angle value, and the measurement mechanism convenient operation, cost is lower.
That annular wheel and pulley are welded and fixed, and can rotate with pulley for reaching the technical scheme that this purpose takes, outer rotor is fixed on support by slide rail, can endwisely slip, and bevel protractor is fixed on support, pointer rotates and rotates along slide plate, directly reads angle numerical value at bevel protractor.
Above-mentioned a kind of bulk material coefficient of maximum static friction measurement mechanism, outer rotor and annular wheel are engageable, make slide plate to fix at any rotational angle.
Above-mentioned a kind of bulk material coefficient of maximum static friction measurement mechanism, the number of teeth of annular wheel is not less than 12, and the gear maximum gauge is not more than 1/10 of support height, to guarantee the measuring accuracy of coefficient of maximum static friction.
Above-mentioned a kind of bulk material coefficient of maximum static friction measurement mechanism, slide plate is detachable, changes the slide plate of differentiated friction Facing material, so that the coefficient of maximum static friction of the unlike materials such as mensuration bulk material and metal, rubber.
Above-mentioned a kind of bulk material coefficient of maximum static friction measurement mechanism, bevel protractor is fixed on support, and pointer rotates with slide plate, accurately to read the maximum static friction angle value.
A kind of bulk material coefficient of maximum static friction measurement mechanism of the present utility model, the coefficient of maximum static friction that can be used for the various materials such as bulk material and metal, rubber is measured, and is applicable to the loose class material in agricultural and forestry biomass class material and other each fields.Adopt directly reading of this device to test maximum static friction angle, and the measurement mechanism convenient operation, cost is lower.
Description of drawings:
Fig. 1 is that a kind of bulk material coefficient of maximum static friction measurement mechanism master of the present utility model looks schematic diagram;
Fig. 2 is a kind of bulk material coefficient of maximum static friction measurement mechanism structure schematic side view;
Fig. 3 is inside and outside gear and rail structure enlarged diagram.
Embodiment:
As shown in Figure 1, 2, 3: 1 is that support, 2 is that annular wheel, 3 is that outer rotor, 4 is that slide rail, 5 is that pulley, 6 is that bevel protractor, 7 is that pointer, 8 is that stay cord, 9 is that slide plate, 10 is that body feed tank, 11 is turning handle.
A kind of bulk material coefficient of maximum static friction of the utility model measurement mechanism, annular wheel and pulley are welded and fixed, and can rotate with pulley, outer rotor is fixed on support by slide rail, endwisely slipping enters in annular wheel, can mesh with annular wheel, makes slide plate to fix at any rotational angle.Bevel protractor is fixed on support, and pointer rotates and rotates along slide plate, directly reads angle numerical value at bevel protractor.Slide plate is detachable, changes the plane of differentiated friction Facing material, so that the coefficient of maximum static friction of the unlike materials such as mensuration bulk material and metal, rubber.Bevel protractor is fixed on support, and pointer rotates with slide plate, accurately to read the maximum static friction angle value.
Further the utility model is described below in conjunction with accompanying drawing:
As shown in Figure 1, 2, 3, support 1 upper boom fixed rack 4, outer rotor 3 is arranged on slide rail 4 and can slides vertically, annular wheel 2 is welded and fixed together with pulley 5, can freely rotate on support 1, stay cord 8 couples together pulley 5 and slide plate 9, driving slide plate 9 when pulley 5 is rotated rotates, pointer 7 is along with slide plate 9 rotates together simultaneously, when body feed tank 10 just during down sliding, outer rotor 3 is slipped in annular wheel 2, and fixed sliding plate 9 rotational angle positions are in order to accurately read maximum static friction angle value on the bevel protractor 6 of pointer 7 indications.
As shown in Figure 1, 2, 3, when body feed tank 10 just slides on slide plate 9, outer rotor 3 and annular wheel 2 are intermeshed, make slide plate 9 be fixed on this angle position, in order to read the maximum static friction angle value.
As shown in Figure 3, be the coefficient of maximum static friction precision that guarantees to measure, the size of annular wheel should be not excessive, and the maximum gauge of gear requires to be not more than 1/10 of support 1 height, and the number of teeth is not less than 12.
As shown in Figure 1, slide plate 9 can be pulled out from the rotation axis on support 1, is convenient to change different friction surface materials, the coefficient of maximum static friction of test unlike material and material.
As shown in Figure 1, bevel protractor 6 is fixed on support 1, and pointer 7 can rotate with slide plate 9, is used for measuring the maximum static friction angle value.
Specific embodiment is as follows:
Adopt this bulk material coefficient of maximum static friction measurement mechanism, measure respectively the maize straw of grinding particle size below 10mm
See the following form with the coefficient of maximum static friction value of wheat stalk and metal, rubber.
Three tests of test result are averaged, error all is not more than 5%, and measuring accuracy meets the requirements, and testing efficiency is higher, simple to operate, cost of manufacture is cheap, before it should be noted that the installation slide plate, requires slide plate without distortion, guarantee surface levelness, and inclusion-free, in addition, the position of pointer need being made zero before test.
It should be noted that at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment, the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (5)
1. bulk material coefficient of maximum static friction measurement mechanism, comprise support (1), annular wheel (2), outer rotor (3), slide rail (4), pulley (5), bevel protractor (6), pointer (7), slide plate (9), it is characterized in that annular wheel (2) and pulley (5) are welded and fixed, can rotate with pulley (5), outer rotor (3) is fixed on support (1) by slide rail (4), can endwisely slip, bevel protractor (6) is fixed on support (1), pointer (7) rotates and rotates along slide plate (9), can directly read angle numerical value at bevel protractor (6).
2. a kind of bulk material coefficient of maximum static friction measurement mechanism according to claim 1, is characterized in that outer rotor (2) and annular wheel (3) are engageable, makes slide plate (9) to fix when any rotational angle.
3. a kind of bulk material coefficient of maximum static friction measurement mechanism according to claim 1 and 2, is characterized in that the number of teeth of annular wheel (2) is not less than 12, and the gear maximum gauge is not more than 1/10 of support (1) height.
4. a kind of bulk material coefficient of maximum static friction measurement mechanism according to claim 1, is characterized in that slide plate (9) is detachable, the slide plate of replaceable differentiated friction Facing material.
5. a kind of bulk material coefficient of maximum static friction measurement mechanism according to claim 1, is characterized in that bevel protractor (6) is fixed on support (1), and pointer (7) rotates with slide plate (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663804 CN202994635U (en) | 2012-12-06 | 2012-12-06 | Device for measuring maximum static friction coefficient of loose material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220663804 CN202994635U (en) | 2012-12-06 | 2012-12-06 | Device for measuring maximum static friction coefficient of loose material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202994635U true CN202994635U (en) | 2013-06-12 |
Family
ID=48565806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220663804 Expired - Fee Related CN202994635U (en) | 2012-12-06 | 2012-12-06 | Device for measuring maximum static friction coefficient of loose material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202994635U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842117A (en) * | 2016-05-23 | 2016-08-10 | 华东理工大学 | Device and method for measuring powder fluidity |
| CN105928869A (en) * | 2016-03-26 | 2016-09-07 | 东北农业大学 | Cylinder-type static friction and sliding friction coefficient test platform |
| CN106256723A (en) * | 2016-08-29 | 2016-12-28 | 繁昌县健文电子商务有限公司 | A kind of waste oil transporter |
| CN107167420A (en) * | 2017-07-05 | 2017-09-15 | 河南农业大学 | A kind of corn ear material dynamic characteristic parameter testing device |
| CN108387513A (en) * | 2018-05-31 | 2018-08-10 | 安徽农业大学 | A kind of quiet coefficient of sliding friction measurement device of seed based on tangent mechanism |
| CN108458969A (en) * | 2018-05-31 | 2018-08-28 | 安徽农业大学 | A kind of quiet coefficient of sliding friction measurement system of seed based on parallelogram lindage |
| CN108917558A (en) * | 2018-07-19 | 2018-11-30 | 山东理工大学 | A kind of bulk granular material sliding friction angle measuring instrument |
-
2012
- 2012-12-06 CN CN 201220663804 patent/CN202994635U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105928869A (en) * | 2016-03-26 | 2016-09-07 | 东北农业大学 | Cylinder-type static friction and sliding friction coefficient test platform |
| CN105928869B (en) * | 2016-03-26 | 2018-11-09 | 东北农业大学 | Drum type brake static friction and coefficient of sliding friction test platform |
| CN105842117A (en) * | 2016-05-23 | 2016-08-10 | 华东理工大学 | Device and method for measuring powder fluidity |
| CN106256723A (en) * | 2016-08-29 | 2016-12-28 | 繁昌县健文电子商务有限公司 | A kind of waste oil transporter |
| CN106256723B (en) * | 2016-08-29 | 2018-12-14 | 繁昌县健文电子商务有限公司 | A kind of gutter oil transfer device |
| CN107167420A (en) * | 2017-07-05 | 2017-09-15 | 河南农业大学 | A kind of corn ear material dynamic characteristic parameter testing device |
| CN108387513A (en) * | 2018-05-31 | 2018-08-10 | 安徽农业大学 | A kind of quiet coefficient of sliding friction measurement device of seed based on tangent mechanism |
| CN108458969A (en) * | 2018-05-31 | 2018-08-28 | 安徽农业大学 | A kind of quiet coefficient of sliding friction measurement system of seed based on parallelogram lindage |
| CN108387513B (en) * | 2018-05-31 | 2019-12-03 | 安徽农业大学 | A kind of quiet coefficient of sliding friction measurement device of seed based on tangent mechanism |
| CN108458969B (en) * | 2018-05-31 | 2019-12-03 | 安徽农业大学 | A kind of quiet coefficient of sliding friction of seed based on parallelogram lindage measures system |
| CN108917558A (en) * | 2018-07-19 | 2018-11-30 | 山东理工大学 | A kind of bulk granular material sliding friction angle measuring instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202994635U (en) | Device for measuring maximum static friction coefficient of loose material | |
| CN203727062U (en) | Multifunctional protractor | |
| CN203881289U (en) | Device for measuring concentricity of ring groove and outer circle of piston | |
| CN207816153U (en) | One kind is advised for O-ring dimensional measurement tower | |
| CN207147420U (en) | Processing axle diameter of axle detection means based on Numeric Control Technology | |
| CN202361923U (en) | External diameter continuous measuring instrument | |
| CN202145128U (en) | Gear radial compositive error detector | |
| CN207007050U (en) | A kind of multifunctional engineering manages measuring scale | |
| CN203323635U (en) | Novel vernier caliper structure for cable measuring | |
| CN201748876U (en) | High-precision micrometer caliper | |
| CN201979931U (en) | Combined teaching aid for mathematics | |
| CN210089528U (en) | Steel construction installation engineering detection device | |
| CN206974303U (en) | Multifunctional leather tape measure | |
| CN201867162U (en) | Inner bevel measurer | |
| CN202403776U (en) | Weighing noodle box | |
| CN201811673U (en) | Angle measuring scale | |
| CN202463345U (en) | Combined angle gauge | |
| CN207466183U (en) | A kind of Napier's compasses | |
| CN201922769U (en) | Multifunctional ruler for math teaching | |
| CN204988259U (en) | Electronics digital display protractor | |
| CN203323654U (en) | Curve range finder | |
| CN201728986U (en) | Angle gauging straight scale | |
| CN202075004U (en) | High-precision measuring cylinder | |
| CN201247103Y (en) | Thermometer | |
| CN203224183U (en) | Novel vernier caliper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130612 Termination date: 20131206 |