CN202171479U - Device for measuring mass flow rate of grain - Google Patents
Device for measuring mass flow rate of grain Download PDFInfo
- Publication number
- CN202171479U CN202171479U CN201120148166XU CN201120148166U CN202171479U CN 202171479 U CN202171479 U CN 202171479U CN 201120148166X U CN201120148166X U CN 201120148166XU CN 201120148166 U CN201120148166 U CN 201120148166U CN 202171479 U CN202171479 U CN 202171479U
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- vibroshock
- shock plate
- mass flow
- beam type
- sensing element
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Abstract
The utility model discloses a device for measuring the mass flow rate of a grain, belonging to the technical field of agricultural machinery and a sensor. The device comprises a stander, four shock absorbers, a flow guide plate, an impingement plate, a base, a cantilever beam type mechanical sensor and a connecting body. The four shock absorbers are respectively and symmetrically distributed on the stander, one side of each shock absorber is connected with the stander, and the other side of each shock absorber is connected with the upper surface of the connecting body; the side face of the connecting body is connected with the cantilever beam type mechanical sensor; the cantilever beam type mechanical sensor is connected with one side of the concave surface of the impingement plate by the base; the flow guide plate is fixed on the stander and is arranged at the right front of the impingement plate, and a bending end of the flow guide plate is adjacent to the impingement plate; and an output signal of the cantilever beam type mechanical sensor is connected with a data acquiring system by an amplifying circuit. The influence of the vibration of a harvester to the mass flow rate measurement precision of the grain can be reduced due to the shock absorbers; and the grain can be preferably spread due to the impingement plate with the curvature of 4m-1. The device has the advantages of being high in measurement precision, stable, reliable, and low in cost.
Description
Technical field
The utility model relates to a kind of corn mass flow sensor, is used for the online detection cereal flow of united reaper, belongs to agricultural machinery and sensor technical field.
Background technology
United reaper is just towards intellectuality, and the direction of maximization develops.In the harvesting process, detect the harvesting cereal flow in real time, generating cell production figure is accurate agricultural and the indispensable ingredient of intelligent harvester with measuring grain yield.Therefore cereal flow transducer is a vitals of realizing flow detection.Cereal flow transducer both domestic and external has: photo-electric volume sensor, radiant type sensor, impulse type sensor etc.Though the measuring method of these sensors differs from one another, the problem that on using, all exists some to solve.It is very big that the photo-electric volume sensor is influenced by dust, and there is injury in the radiant type sensor to the person.At home and abroad the impulse type cereal flow transducer is to use one type the most widely, and it is based on impact principle, and when the grain stream impact microphone, sensor is stressed relevant with cereal flow.The size of power depends on the flow of cereal, and flow is big more, and the power that acts on the sensor is big more, and survey sensor is stressed can to obtain the grain stream value.The measurement range of impulse type flowmeter is wider, can be used for measuring most cereal.It is simple in structure, can adapt to abominable industrial or agricultural environment.But measurement result is vulnerable to influences such as elevator speed, shock plate position, physical features, machine vibration, at present these factor researchs is awaited further deeply.
Through the prior art literature search is found; The patent No. is that the United States Patent (USP) of US005686671 discloses a kind of impulse type corn mass flow sensor that is used for united reaper; Cereal impacts on the notch board, and intaglio plate passes to the force measuring machine of back with power, thereby reaches the measurement purpose.Publication number is that the Chinese patent " corn mass flow sensor " of CN1702438A discloses a kind of beam type momentum corn mass flow sensor, and this sensor is utilized on the flexible member and adds the weakening piece and reduce to vibrate the united reaper nominal situation under the influence to the corn mass flow measuring accuracy.
Summary of the invention
The utility model receives the serious technical barrier of vibration effect to existing corn mass flow sensor measuring accuracy, between frame and beam type force sensing element, increases vibroshock, the influence that reduces to vibrate on the one hand; A kind of novel shock plate of utility model reduces cereal impact effect time on shock plate on the other hand, increases the acting force of cereal and shock plate.Test shows: through the improvement of above two aspects, significantly improved the measuring accuracy of corn mass flow, measuring error is less than 5%.
In the research innovation aspect, effectively utilize discrete element method efficiently to handle the advantage of particle swarm collision, the simulation cereal-granules flows the collision process with shock plate, follows the tracks of, analyzes the collision process of cereal kernel stream and shock plate from thin sight.The artificial flow that cereal is set in discrete element software; Obtain the size of impulsive force through simulation; Reach a conclusion through analyzing: when shock plate is straight plate, the impact effect time with increasing grain stream and shock plate, be unfavorable for the raising of corn mass flow measuring accuracy.Straight plate is modified into that to have curvature be 4m for this reason
-1Curved surface, help the diffusion of cereal like this, reduce the impact effect time of cereal and shock plate.
The technical scheme that the utility model is taked is to comprise frame, vibroshock A, vibroshock B, vibroshock C, vibroshock D, fair water fin, shock plate and base, beam type force sensing element, connector; Said vibroshock A, vibroshock B, vibroshock C, vibroshock D are arranged symmetrically in respectively on the frame, and the one side of four vibroshocks links to each other with frame, and another side links to each other with the upper surface of connector, and the side surface of connector is vertical with upper surface; The side of connector links to each other with beam type force sensing element (9); The beam type force sensing element links to each other with concave surface one side of shock plate through base; The output signal of said beam type force sensing element links to each other with data acquisition system (DAS) through amplifying circuit.
Four vibroshock symmetric arrangement, one side is fixed on the frame, and another side links to each other with the upper surface of connector, and the upper surface of connector is vertical with side surface, is welded with reinforcement between two vertical surface, and the beam type force sensing element is installed on the side surface of connector.
Base with rectangular parallelepiped between beam type force sensing element and the shock plate separates, and base adopts nylon material, has pilot hole above; Shock plate is divided into two parts, and top is straight, and the bottom, lower part is divided into curvature 4m
-1Curved surface, but two parts are one.The beam type force sensing element links to each other with concave surface one side of shock plate through base; The material of shock plate is an organic glass, has pilot hole above.
Fair water fin one end is fixed on the frame, and the other end is positioned at the shock plate dead ahead and near the protruding direction of shock plate.The angle of bend of fair water fin is 130 °, and the distance between the shock plate highly is no more than shock plate height topmost less than 30mm.
The output voltage of beam type force sensing element links to each other with data acquisition system (DAS) through amplifying circuit.
Compared with prior art, the utility model adopts discrete element method simulation corn mass flow measuring process, and the impact plate structure is optimized, and it is 4m that straight shock plate is modified into curvature
-1Shock plate, help the diffusion of cereal, reduce the impact effect time of cereal on shock plate; Utilize vibroshock to reduce the influence of harvester vibration simultaneously to the corn mass flow measuring accuracy.Improvement through above two aspects.Improved the measuring accuracy of corn mass flow.Test on harvester shows: the measuring error of this corn mass flow measurement mechanism is less than 5%, good stability.In addition, the cost of this measurement mechanism is lower.
Description of drawings
Fig. 1 is the structural representation of corn mass flow measurement mechanism.
Among the figure, 1, frame, 2, vibroshock A, 3, vibroshock B, 4, vibroshock C, 5, vibroshock D, 6, fair water fin, 7, shock plate, 8, base, 9, the beam type force sensing element, 10, connector.
Embodiment
A kind of corn mass flow measurement mechanism comprises frame 1, vibroshock A2, vibroshock B3, vibroshock C4, vibroshock D5, fair water fin 6, shock plate 7, base 8, beam type force sensing element 9, connector 10.
Vibroshock A2, vibroshock B3, vibroshock C4, vibroshock D5 are arranged symmetrically in respectively on the frame 1, and the one side of four vibroshocks links to each other with frame 1, and another side links to each other with the upper surface of connector 10, and the side surface of connector 10 is vertical with upper surface; The side of connector 10 links to each other with beam type force sensing element 9; Beam type force sensing element 9 links to each other with concave surface one side of shock plate 7 through base 8, and the maximum bearing capacity of this force sensing element is 5kg; Fair water fin 6 is fixed on the frame 1, is positioned at shock plate 7 dead aheads and the curved end direction near shock plate 7 convexities.The angle of bend of fair water fin 6 is 130 °, and the distance between the shock plate 7 is less than 30mm, and the height bottom of fair water fin 6 must not surpass shock plate 7 height topmost simultaneously.The output signal of beam type force sensing element 9 links to each other with data acquisition system (DAS) through amplifying circuit.
When the corn mass flow measurement mechanism of the utility model was worked, the vibration signal that harvester produces weakened through four vibroshocks.The one side collision of cereal and shock plate 7 protrusions is scattering into rapidly in the tanker of harvester after the collision, and the impulsive force that collision produces passes to beam type force sensing element 9 through shock plate 7 and base 8.Beam type force sensing element 9 produces electric signal, after amplifying, passes to data acquisition system (DAS), and after demarcating, this measurement mechanism can be applied to agricultural production.
Claims (6)
1. corn mass flow measurement mechanism; It is characterized in that; Comprise frame (1), vibroshock A (2), vibroshock B (3), vibroshock C (4), vibroshock D (5), fair water fin (6), shock plate (7) and base (8); Beam type force sensing element (9), connector (10); Said vibroshock A (2); Vibroshock B (3); Vibroshock C (4), vibroshock D (5) are arranged symmetrically in respectively on the frame (1), and the one side of four vibroshocks links to each other with frame (1); Another side links to each other with the upper surface of connector (10), and the side surface of connector (10) is vertical with upper surface; The side of connector (10) links to each other with beam type force sensing element (9); Beam type force sensing element (9) links to each other with concave surface one side of shock plate (7) through base (8); The output signal of said beam type force sensing element (9) links to each other with data acquisition system (DAS) through amplifying circuit.
2. a kind of corn mass flow measurement mechanism according to claim 1 is characterized in that said shock plate (7) is divided into two parts, and top is straight, and the bottom is divided into curvature 4m
-1Curved surface, two parts of shock plate (7) are one; The material of shock plate (7) is an organic glass, has pilot hole above.
3. a kind of corn mass flow measurement mechanism according to claim 1 and 2; It is characterized in that; The angle of bend of said fair water fin (6) is 130 °, and an end of fair water fin (6) is fixed on the frame (1), and the other end of fair water fin (6) is positioned at shock plate (7) dead ahead and near the protruding direction of shock plate (7); And the distance between the shock plate highly is no more than shock plate height topmost less than 30mm.
4. a kind of corn mass flow measurement mechanism according to claim 1 and 2 is characterized in that said base (8) is the rectangular parallelepiped base, has pilot hole above, and material is a nylon.
5. a kind of corn mass flow measurement mechanism according to claim 1 and 2 is characterized in that, is welded with reinforcement between the upper surface of said connector (10) and the side surface.
6. a kind of corn mass flow measurement mechanism according to claim 1 and 2 is characterized in that, the maximum bearing capacity of described beam type force sensing element is 5kg.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120148166XU CN202171479U (en) | 2011-05-11 | 2011-05-11 | Device for measuring mass flow rate of grain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120148166XU CN202171479U (en) | 2011-05-11 | 2011-05-11 | Device for measuring mass flow rate of grain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202171479U true CN202171479U (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120148166XU Expired - Lifetime CN202171479U (en) | 2011-05-11 | 2011-05-11 | Device for measuring mass flow rate of grain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202171479U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288239A (en) * | 2011-05-11 | 2011-12-21 | 江苏大学 | Grain quality and flow rate measuring device |
| CN109506731A (en) * | 2017-09-15 | 2019-03-22 | 迪尔公司 | Monitoring device for monitoring crop yield |
-
2011
- 2011-05-11 CN CN201120148166XU patent/CN202171479U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102288239A (en) * | 2011-05-11 | 2011-12-21 | 江苏大学 | Grain quality and flow rate measuring device |
| CN109506731A (en) * | 2017-09-15 | 2019-03-22 | 迪尔公司 | Monitoring device for monitoring crop yield |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120321 Effective date of abandoning: 20130417 |
|
| RGAV | Abandon patent right to avoid regrant |