CN104198146A - Agricultural material collision recovery coefficient test platform - Google Patents
Agricultural material collision recovery coefficient test platform Download PDFInfo
- Publication number
- CN104198146A CN104198146A CN201410412089.2A CN201410412089A CN104198146A CN 104198146 A CN104198146 A CN 104198146A CN 201410412089 A CN201410412089 A CN 201410412089A CN 104198146 A CN104198146 A CN 104198146A
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- wallboard
- scale
- solenoid valve
- collision
- mirror
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Abstract
The invention discloses an agricultural material collision recovery coefficient test platform and belongs to physical property test devices. A mirror, a scale wall plate, a height adjusting rod, first and second electromagnetic valves, a support and a time-delay relay are arranged on a base, the mirror and the scale wall plate form a 135-degree included angle to be connected into a whole, the support is hinged to a collision wall plate through a pin shaft, angle adjusting screws A and B are arranged on two sides of the pin shaft on the support respectively, upper and lower supporting plates are disposed on the height adjusting rod, upper and lower adsorption tubes are installed on the upper and lower supporting plates respectively, an air-sucking pump is respectively communicated with the first and second electromagnetic valves through a connecting air tube, a high-speed camera is vertical to the scale wall plate, horizontal adjusting bolt groups are arranged at four corners of the base respectively, the platform can perform testing on collisions of agricultural materials in various forms and conditions and collisions among materials, the structure is novel and reasonable, the adaptive capacity is high, the application range is wide, the usage is reliable, and the test accuracy is high.
Description
Technical field
The invention belongs to quantitative measurement equipment, relate generally to a kind of test platform of agricultural material collision coefficient of restitution of bulk solid.
Background technology
In agricultural material field, collision coefficient of restitution has reflected the performance that can return to virgin state after material collision deformation, is the basic data of united reaper cleaning vibration sieve and precision drill parameter designing and performance evaluation.In addition, collision coefficient of restitution is one of required most basic particle attribute while being discrete element software emulation, and the parameter of inputting when emulation is more accurate, and the result of calculating output is more accurate.Scholars more both domestic and external obtain collision coefficient of restitution in order to measure, made some collision coefficient of restitution by oneself test bed, can realize material height of drop adjustable, material impact velocity size is adjustable, but lack automatic charging mechanism, cannot ensure that when material falls be the movement of falling object; Cannot change the direction of the impact velocity of material; And experimental provision can only be measured and obtain the collision situation of material in normal orientation, and analytical calculation coefficient of restitution, cannot obtain for the tangential collision situation of material and total collision situation, cannot obtain its coefficient of restitution.
Summary of the invention
Object of the present invention is exactly the problem existing for above-mentioned prior art, design provides a kind of agricultural material collision coefficient of restitution test platform, reach can realize and provide agricultural material with friction speed and different directions and collision wallboard bump condition, accurately and timely measure agricultural material collide forward and backward total, normal direction and tangential on speed and accurately measure the forward and backward speed of collision that agricultural material collides each other, adaptable object aloft.
The object of the present invention is achieved like this: equipped mirror, scale wallboard, height regulating rod, the first solenoid valve, the second solenoid valve, bracing frame and timing relay on base upper surface, described mirror and scale wallboard link into an integrated entity, in between mirror and scale wallboard, angle α is 135 °, described height regulating rod is positioned at the rear outside of scale wallboard, and support frame as described above is positioned at inner side, scale wallboard front portion; On support frame as described above upper end by bearing pin hinge installation shock wallboard, on bracing frame, be positioned at position, bearing pin both sides and can move up and down equipped angular adjustment screw rod A and the angular adjustment screw rod B of adjusting, the upper end of described angular adjustment screw rod A, B contacts cooperation with collision wallboard downside respectively; What on described height regulating rod, can move up and down successively from top to bottom adjusting installs supporting plate and bottom plate, on mounting plate and bottom plate, install respectively adsorption tube and lower adsorption tube, the two ends of upper aspiration pipe are connected on adsorption tube and the first solenoid valve, the two ends of lower aspiration pipe are connected with lower adsorption tube and the second solenoid valve respectively, and wire is communicated with timing relay respectively with the first solenoid valve, the second solenoid valve; Connecting tracheae connects aspiration pump respectively with first and second solenoid valve; High-speed camera is the orthogonal relative position, inner side, scale wallboard front portion that is configured in scale wallboard; At described base four corners position, horizontal adjustment bolt group is installed respectively at place, so far forms agricultural material collision coefficient of restitution test platform.
The present invention overcomes and has avoided traditional and connects agricultural material by cotton rope and test the problem of colliding coefficient of restitution test result poor accuracy between material, adopt the adjustable impact walls plate structure in adjustable for height upper and lower adsorption tube and angle of inclination, can test colliding coefficient of restitution between the collision of agricultural material various forms condition and material, for the distinct element method research of agricultural material provides technical support, have the advantages that structural design is new reasonable, adaptable, applied widely, use is reliable, measuring accuracy is high.
Brief description of the drawings
Fig. 1 is agricultural material collision coefficient of restitution test platform general structure schematic diagram;
Fig. 2 is bowing to view of Fig. 1;
Fig. 3 is the structural representation of removing in Fig. 1 after high-speed camera;
Fig. 4 is the left-hand view of Fig. 1;
Fig. 5 is the rear speed schematic diagram of seed collision of agricultural material;
Fig. 6 is the seed 3-D view that high-speed camera is taken.
Piece number explanation in figure:
1, mirror, 2, scale wallboard, 3, bottom plate, 4, lower adsorption tube, 5, mounting plate, 6, upper absorption pipe, 7, height regulating rod, 8, upper aspiration pipe, 9, lower aspiration pipe, 10, collision wallboard angular adjustment scale line, 11, collision wallboard, 12, bearing pin, 13, angular adjustment screw rod A, 14, aspiration pump, 15, connect tracheae, 16, the first solenoid valve, 17, the second solenoid valve, 18, bracing frame, 19, timing relay, 20, base, 21, horizontal adjustment bolt group, 22, angular adjustment screw rod B, 23, high-speed camera.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present invention is described in detail.A kind of agricultural material collision coefficient of restitution test platform, equipped mirror 1, scale wallboard 2, height regulating rod 7, the first solenoid valve 16, the second solenoid valve 17, bracing frame 18 and timing relay 19 on base 20 upper surfaces, described mirror 1 links into an integrated entity with scale wallboard 2, in between mirror 1 and scale wallboard 2, angle α is 135 °, described height regulating rod 7 is positioned at the rear outside of scale wallboard 2, and support frame as described above 18 is positioned at the anterior inner side of scale wallboard 2; On support frame as described above 18 upper ends, pass through bearing pin 12 hinge installation shock wallboards 11, on bracing frame 18, be positioned at bearing pin 12 positions, both sides and can move up and down equipped angular adjustment screw rod A13 and the angular adjustment screw rod B22 of adjusting, described angular adjustment screw rod A, B13,22 upper end contact cooperation with collision wallboard 11 downsides respectively; What on described height regulating rod 7, can move up and down successively from top to bottom adjusting installs supporting plate 5 and bottom plate 3, on mounting plate 5 and bottom plate 3, install respectively adsorption tube 6 and lower adsorption tube 4, the two ends of upper aspiration pipe 8 are connected on adsorption tube 6 and the first solenoid valve 16, the two ends of lower aspiration pipe 9 are connected with lower adsorption tube 4 and the second solenoid valve 17 respectively, and wire is communicated with timing relay 19 respectively with the first solenoid valve 16, the second solenoid valve 17; Connecting tracheae 15 connects aspiration pump 14 respectively with first and second solenoid valve 16,17; High-speed camera 23 is the orthogonal scale wallboard 2 relative positions, anterior inner side that are configured in scale wallboard 2; At described base, horizontal adjustment bolt group 21 is installed respectively at 20 four corners position places.In described scale wallboard 2 interior sidewall surface, with collision wallboard 11 cooperatively interacts collision wallboard angular adjustment scale line 10 is set.
While colliding coefficient of restitution between test material and material, first, first, two solenoid valves 16, 17 all belong to on-state, by setting-up time timing relay 19, control the first solenoid valve 16 and the second solenoid valve 17 with poor disconnection of regular hour, wherein the first solenoid valve 16 first disconnects, material is from upper adsorption tube 6 mouth of pipe free-fallings, after certain hour is poor, the second solenoid valve 17 disconnects, material is from lower adsorption tube 4 mouth of pipe free-fallings, a certain position two agricultural materials below lower adsorption tube 4 bump, and take by high-speed camera 23, wherein require time delays relay 19 mistiming minimum can be controlled to 0.1 second.
As can be seen from Figure 5, because material exists the scrambling (as corn kernel) of shape, bounce-back direction after seed collision is random, suppose that the speed after material seed collision reaction is V, when high-speed camera is during just to YZ plane, can only extract the movement velocity of material seed on this face, i.e. V
zwith V
y, the speed phase ratio error after speed and the actual collision obtaining like this can be very large, and the resultant velocity V after actual material collides also comprises V
x, this speed only cannot obtain by traditional high-speed camera-shooting method.In Fig. 6 experiment, mirror 1 is 135 ° of angles with scale wallboard 2, the putting position of high-speed camera 23 is just to scale wallboard 2, now, by High-speed Photography Analysis not only can obtain material seed with scale wallboard 2 parallel surfaces (YZ plane) on speed V
zwith V
y, can also pass through mirror 1 image-forming principle, from mirror 1, obtain material seed with scale wallboard 2 vertical planes (XZ plane) on speed V
xwith V
z, finally obtain the space velocity V after the collision of material seed, greatly reduce experiment measuring error, increase the accuracy of collision coefficient of restitution test.
In the time considering collision angle and impact velocity factor, by regulating the position of upper and lower supporting plate 5,3 on height regulating rod 7, change upper and lower adsorption tube 6,4 height, realize the variation of agricultural material height of drop; By angle adjustable bolt A and B13,22, regulate the angle between collision wallboard 11 and surface level, realize agricultural material bumps with collision wallboard 11 under different condition, and obtain the speed on different directions in agricultural material collision process by high-speed camera 23, finally, by trying to achieve velocity ratio before and after collision, obtain the collision coefficient of restitution in normal direction, tangential and total direction.Collision wallboard angular adjustment scale line 10 coordinates with collision wallboard 11, to facilitate the accurate of angle between collision wallboard 11 and surface level to determine, meets the needs of different impact conditions.
Claims (2)
1. an agricultural material collision coefficient of restitution test platform, it is characterized in that: equipped mirror (1) on base (20) upper surface, scale wallboard (2), height regulating rod (7), the first solenoid valve (16), the second solenoid valve (17), bracing frame (18) and timing relay (19), described mirror (1) links into an integrated entity with scale wallboard (2), in between mirror (1) and scale wallboard (2), angle α is 135 °, described height regulating rod (7) is positioned at the rear outside of scale wallboard (2), support frame as described above (18) is positioned at the anterior inner side of scale wallboard (2), on support frame as described above (18) upper end, pass through bearing pin (12) hinge installation shock wallboard (11), upper at bracing frame (18), to be positioned at bearing pin (12) position, both sides and can to move up and down adjusting equipped angular adjustment screw rod A (13) and angular adjustment screw rod B (22), the upper end of described angular adjustment screw rod A, B (13,22) respectively with collide wallboard (11) downside and contact cooperation, what on described height regulating rod (7), can move up and down successively from top to bottom adjusting installs supporting plate (5) and bottom plate (3), on mounting plate (5) and bottom plate (3), install respectively adsorption tube (6) and lower adsorption tube (4), the two ends of upper aspiration pipe (8) are connected on adsorption tube (6) and the first solenoid valve (16), the two ends of lower aspiration pipe (9) are connected with lower adsorption tube (4) and the second solenoid valve (17) respectively, wire by timing relay (19) respectively with the first solenoid valve (16), the second solenoid valve (17) is communicated with, connecting tracheae (15) connects aspiration pump (14) respectively with first and second solenoid valve (16,17), high-speed camera (23) is the orthogonal relative position, the anterior inner side of scale wallboard (2) that is configured in scale wallboard (2), at described base (20), horizontal adjustment bolt group (21) is installed respectively at four corners position place.
2. agricultural material according to claim 1 collision coefficient of restitution test platform, is characterized in that: in described scale wallboard (2) interior sidewall surface, with collision wallboard (11) cooperatively interacts collision wallboard angular adjustment scale line (10) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412089.2A CN104198146B (en) | 2014-08-14 | 2014-08-14 | Agricultural material collision recovery coefficient test platform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410412089.2A CN104198146B (en) | 2014-08-14 | 2014-08-14 | Agricultural material collision recovery coefficient test platform |
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| CN104198146A true CN104198146A (en) | 2014-12-10 |
| CN104198146B CN104198146B (en) | 2017-01-25 |
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| CN201410412089.2A Expired - Fee Related CN104198146B (en) | 2014-08-14 | 2014-08-14 | Agricultural material collision recovery coefficient test platform |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084915A (en) * | 2017-03-23 | 2017-08-22 | 华北电力大学 | It is a kind of to be used for the measuring system of electrically conductive particles and electrode collision coefficient in GIS |
| 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 |
| CN107219135A (en) * | 2017-04-21 | 2017-09-29 | 江苏大学 | The method of testing of fly maggot recovery coefficient in a kind of During Process of Screening of Vibration Screen |
| CN110595718A (en) * | 2019-10-11 | 2019-12-20 | 青岛农业大学 | Material characteristic collision test bed |
| CN110954410A (en) * | 2019-11-12 | 2020-04-03 | 内蒙古科技大学 | Mechanical testing device for studying potato collision damage |
| CN111103113A (en) * | 2020-02-01 | 2020-05-05 | 青岛理工大学 | Multifunctional complex multi-phase collision experimental instrument |
| CN114034455A (en) * | 2021-10-25 | 2022-02-11 | 西安交通大学 | Rolling bearing retainer and rolling element collision recovery coefficient measuring device |
| CN114397079A (en) * | 2021-11-24 | 2022-04-26 | 东北农业大学 | Intelligent multifunctional collision recovery coefficient measuring device |
| CN114544782A (en) * | 2022-02-28 | 2022-05-27 | 天津大学 | Sensor calibration device based on embedded PVDF piezoelectric film and calibration method thereof |
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| CN1979110A (en) * | 2005-12-02 | 2007-06-13 | 陈夏宗 | Detection method and apparatus for landing test |
| CN101216396B (en) * | 2007-12-26 | 2010-09-15 | 江苏大学 | Agricultural material impacting characteristic test apparatus and method |
| CN101187613B (en) * | 2007-12-27 | 2010-06-09 | 江苏大学 | Agricultural material impact test device and method |
| CN102865988A (en) * | 2011-07-08 | 2013-01-09 | 鸿富锦精密工业（深圳）有限公司 | Shock testing machine and method for carrying out shock test by same |
-
2014
- 2014-08-14 CN CN201410412089.2A patent/CN104198146B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107084915A (en) * | 2017-03-23 | 2017-08-22 | 华北电力大学 | It is a kind of to be used for the measuring system of electrically conductive particles and electrode collision coefficient in GIS |
| CN107219135A (en) * | 2017-04-21 | 2017-09-29 | 江苏大学 | The method of testing of fly maggot recovery coefficient in a kind of During Process of Screening of Vibration Screen |
| 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 |
| CN110595718A (en) * | 2019-10-11 | 2019-12-20 | 青岛农业大学 | Material characteristic collision test bed |
| CN110954410A (en) * | 2019-11-12 | 2020-04-03 | 内蒙古科技大学 | Mechanical testing device for studying potato collision damage |
| CN111103113A (en) * | 2020-02-01 | 2020-05-05 | 青岛理工大学 | Multifunctional complex multi-phase collision experimental instrument |
| CN111103113B (en) * | 2020-02-01 | 2022-01-18 | 青岛理工大学 | Multifunctional complex multi-phase collision experimental instrument |
| CN114034455A (en) * | 2021-10-25 | 2022-02-11 | 西安交通大学 | Rolling bearing retainer and rolling element collision recovery coefficient measuring device |
| CN114397079A (en) * | 2021-11-24 | 2022-04-26 | 东北农业大学 | Intelligent multifunctional collision recovery coefficient measuring device |
| CN114397079B (en) * | 2021-11-24 | 2023-05-02 | 东北农业大学 | Intelligent multifunctional collision recovery coefficient measuring device |
| CN114544782A (en) * | 2022-02-28 | 2022-05-27 | 天津大学 | Sensor calibration device based on embedded PVDF piezoelectric film and calibration method thereof |
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| Publication number | Publication date |
|---|---|
| CN104198146B (en) | 2017-01-25 |
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Granted publication date: 20170125 Termination date: 20170814 |