CN111678718A - Spray uniformity testing device and spray amount distribution uniformity measuring method - Google Patents
Spray uniformity testing device and spray amount distribution uniformity measuring method Download PDFInfo
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- CN111678718A CN111678718A CN202010442346.2A CN202010442346A CN111678718A CN 111678718 A CN111678718 A CN 111678718A CN 202010442346 A CN202010442346 A CN 202010442346A CN 111678718 A CN111678718 A CN 111678718A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01M99/005—Testing of complete machines, e.g. washing-machines or mobile phones
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Abstract
The invention discloses a spray uniformity test device and a spray amount distribution uniformity measuring method, comprising a moving device; installing a positioning system and a frame on the mobile device; the turnover frame and the liquid baffle plate are arranged on the machine frame, the turnover frame is provided with a weighing sensor, the weighing sensor is provided with a row of liquid receiving pipes, and the turnover frame can turn over under the driving of the first motor; a mist collecting groove fixed on the frame is arranged above the roll-over stand, the bottom of the mist collecting groove is communicated with the inlet of a liquid guide pipe, and the liquid guide pipe is used for guiding the liquid flowing out from the mist collecting groove into a liquid receiving pipe; the liquid baffle plate is arranged at the outlet of the liquid guide pipe, and the second motor drives the liquid baffle plate to be positioned at a non-shielding station and a shielding station; the controller is communicated with the driving motor, the first motor, the second motor and the positioning system.
Description
Technical Field
The invention relates to a plant protection mechanical test device, in particular to a test system and a test method for automatically measuring the distribution uniformity of the liquid spraying amount of a spray rod type spraying machine.
Background
The spray rod type sprayer is a motor-driven sprayer with a spray head arranged on a transverse spray rod or a vertical spray rod, and is a high-efficiency plant protection machine for preventing and controlling diseases, pests and weeds in large-scale planted land. The sprayer is suitable for spraying liquid preparations such as various pesticides, fertilizers, plant production regulators and the like in a large area, is widely applied to spraying operation of field crops, lawns, nurseries, wall type vineyards and specific occasions, and has the advantages of large operation width, high operation efficiency and concentrated operation quality reflected on the distribution uniformity of the liquid spraying amount.
According to the standard regulation requirement, the spray rod type spraying machine needs to be subjected to the measurement of the distribution uniformity of the spray liquid quantity. During the test, the height between a spray head on the spray rod and a mist collecting groove is 500mm, the spray rod sprays at rated pressure, the measuring time is 1min, the liquid flowing out of each groove is collected, the amount of liquid medicine is measured by using a measuring cylinder, and the variation coefficient of the distribution uniformity of the amount of liquid medicine is calculated. At present, a test device for automatically measuring the distribution uniformity of the liquid spraying amount of the spray rod type spraying machine is not available in China.
Disclosure of Invention
The invention aims to provide a test system for automatically measuring the distribution uniformity of the spray amount of a spray rod type sprayer, which meets the test conditions specified by the national technical standard. The invention has the advantages that the distribution uniformity of the spray liquid quantity of the spray rod type spraying machine can be automatically measured, and the automatic operation degree is high.
The technical solution of the invention is as follows:
in a first aspect, the invention provides a test system for automatically measuring the distribution uniformity of the liquid spraying amount of a boom sprayer, which comprises a controller, a track and a positioning system,
a rail car is arranged on the rail;
the rail car is provided with a driving motor, a storage battery, a frame and a gray bus vehicle-mounted subsystem, wherein the driving motor is used for driving the rail car to travel on the rail through a chain wheel and a chain; the storage battery supplies power to the whole device;
the frame is provided with a roll-over stand and a liquid baffle plate, the roll-over stand is provided with a weighing sensor, the weighing sensor is provided with a row of liquid receiving pipes, and the roll-over stand can turn over under the drive of a first motor;
a mist collecting groove fixed on the frame is arranged above the roll-over stand, the bottom of the mist collecting groove is communicated with the inlet of a liquid guide pipe, and the liquid guide pipe is used for guiding the liquid flowing out from the mist collecting groove into a liquid receiving pipe; the liquid baffle plate is arranged at the outlet of the liquid guide pipe, and the second motor drives the liquid baffle plate to be positioned at a non-shielding station and a shielding station; the controller is communicated with the driving motor, the first motor, the second motor and the positioning system.
In a second aspect, the invention provides a test method based on the test system for automatically measuring the distribution uniformity of the liquid spraying amount of the boom sprayer, and the test method comprises the following steps:
1. setting relevant parameters on a controller; comprises the steps of advancing, retreating and stopping of a rail car; testing times, liquid receiving reference time and liquid receiving completion time;
2. the weighing sensor measures the reference mass of each liquid receiving pipe;
3. the second motor drives the liquid baffle plate to be positioned at a non-shielding station, and the liquid receiving pipe starts to receive liquid;
4. when the liquid receiving completion time is reached, the second motor drives the liquid baffle to be positioned at a shielding station;
5. the weighing sensor measures the finished mass of each liquid receiving pipe, so that the liquid collecting amount of each mist collecting groove is equal to the finished mass of each liquid receiving pipe minus the reference mass of each liquid receiving pipe, and the liquid collecting amount of each mist collecting groove is sequentially marked and stored;
6. the first motor drives the turnover frame to turn over 150 degrees backwards, liquid in each liquid receiving pipe is poured, and after 3 seconds, the first motor drives the turnover frame to turn over to the liquid receiving level and accurately position the liquid receiving level; meanwhile, the rail car is controlled to accurately move forward for a set distance through a positioning system; the 1 st liquid collection test was completed.
7. Repeating the steps 1-6, carrying out the liquid collection quantity test for the 2 nd time, and sequentially marking and storing the liquid collection quantity of each mist collection groove; until the set "number of tests" is completed.
The invention has the beneficial effects that:
by adopting the structure, the invention has high automation degree and convenient operation, ensures higher test precision and effectively realizes the aim of the invention.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and not to limit the invention.
FIG. 1 is a front view of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
fig. 3 is a top view of the present invention.
In the figure, 1, track; 2. a rail car; 3. a drive motor; 4. a storage battery; 5. a mist collecting groove; 6. a servo motor; 7. a frame; 8. a liquid receiving pipe; 9 a load cell; 10. a servo motor; 11. a roll-over stand; 12. a Gray bus vehicle-mounted subsystem; 13. a catheter; 14. a liquid baffle; 15. a gray bus ground subsystem; 16. and a gray code bus subsystem.
Detailed Description
It is to be understood that the following detailed description is exemplary and is intended to provide further explanation of the invention as claimed. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the invention. As used herein, the singular forms "a", "an", and/or "the" are intended to include the plural forms as well, unless the invention expressly state otherwise, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof;
for convenience of description, the words "up", "down", "left" and "right" in the present invention, if any, merely indicate correspondence with up, down, left and right directions of the drawings themselves, and do not limit the structure, but merely facilitate the description of the invention and simplify the description, rather than indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the invention.
The terms "mounted", "connected", "fixed", and the like in the present invention are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; the two components can be connected mechanically or electrically, directly or indirectly through an intermediate medium, or connected internally or in an interaction relationship, and the terms used in the present invention should be understood as having specific meanings to those skilled in the art.
The embodiment discloses a test system for automatically measuring the distribution uniformity of the liquid spraying amount of a spray rod type spraying machine, which comprises a tablet personal computer, a track 1 fixed on the horizontal ground, a gray bus ground subsystem 15 and a gray bus subsystem 16 as shown in figures 1, 2 and 3,
the track 1 is provided with a track car 2, the track car 2 is provided with a driving motor 3, a storage battery 4, a rack 7 and a gray bus vehicle-mounted subsystem 12, and the driving motor 3 is used for driving the track car 2 to travel on the track 1 through a chain wheel and a chain; the storage battery 4 supplies power to the electric devices in the whole equipment; the frame 7 is arranged on the rail car and provides a support for related equipment on the rail car;
the frame 7 is provided with a servo motor 6, a turnover frame 11, a servo motor 10, a liquid baffle plate 14 and a mist collecting groove 5, two ends of the turnover frame 11 are fixed on the frame, and the servo motor 10 is arranged on the outer side of the frame and drives the turnover frame 11 to turn over; the roll-over stand 11 is provided with a plurality of load cells 9, the load cells 9 are provided with a row of liquid receiving pipes 8, as shown in fig. 1, the liquid receiving pipes 8 are provided in plurality, and the liquid receiving pipes 8 are arranged in a row on the roll-over stand 11.
The liquid baffle plate 14 is arranged above the roll-over stand 11; furthermore, the liquid baffle 14 is fixed on a rotating shaft, two ends of the rotating shaft are installed on the rack, and the servo motor 6 drives the rotating shaft to rotate so as to realize the rotation of the liquid baffle. The servo motor 6 is used for driving the liquid baffle to be in a non-shielding station or a shielding station.
A mist collecting groove 5 is arranged above the liquid baffle 14, and the mist collecting groove 5 is obliquely arranged and fixed on the frame as shown in fig. 2; the bottom end of each mist collecting groove 5 is connected with the inlet of a liquid guide pipe 13; the tail end of the liquid guide pipe 13 is positioned above the liquid receiving pipes 8, one liquid guide pipe 13 corresponds to one liquid receiving pipe 8, and the number of the liquid guide pipes 13 is equal to that of the liquid receiving pipes 8; the liquid guide pipe 13 is used for guiding the liquid flowing out from the mist collection groove 5 to the upper part of the liquid receiving pipe 8; the liquid baffle plate 14 is arranged at the outlet of the liquid guide tube, and the second motor drives the liquid baffle plate to be positioned at a non-shielding station and a shielding station.
Furthermore, an acute angle is formed between the axis of the mist collecting groove and the axis of the liquid guide pipe; the liquid guide pipe is connected to the bottom of the mist collecting groove; preferably, the liquid guide pipe and the mist collecting plate are made of common plastic materials.
The above-mentioned weighing cell 9 is used for measuring the liquid collection amount of each mist collection tank.
The tablet personal computer realizes control over a Gray bus positioning system, measurement control over a weighing sensor and control over a driving motor, a servo motor I and a servo motor II through programs, completes the mobile positioning of the rail car, the transposition of a non-shielding station and a shielding station of a liquid baffle plate, the liquid receiving and dumping of a liquid receiving pipe and the measurement of liquid collecting quantity, automatically generates data of variation coefficients of the spray quantity distribution uniformity of the xth tank to the xth tank, and chart-type original records, and stores the data.
The liquid collecting amount of each mist collecting groove 5 is indirectly obtained by measuring the reference mass of each liquid receiving pipe and the finished mass of each liquid receiving pipe, and the calculation formula is as follows:
the liquid collecting amount of each mist collecting groove is equal to the finished quality of each liquid collecting pipe-the reference quality of each liquid collecting pipe
After the liquid collection amount of each mist collection groove in the spray amplitude range of the spray rod type spraying machine is finished, the data of the variation coefficient of the spray amount distribution uniformity of the x-th groove to the Y-th groove and the chart type original record are automatically generated by the tablet personal computer and stored.
The following describes the operation of the present invention: referring to fig. 1, 2 and 3, the tablet personal computer is provided with forward, backward, stop and test start shortcut keys, and the corresponding shortcut keys are clicked to control the railcar to move forward, backward and stop; setting the test times which are the integer of the spraying amplitude of the spraying machine except 1.5m (the width of a mist collecting groove of the test device) and then 1; the "liquid contact reference time" is generally set to 10 seconds after the start of the test; the "liquid contact completion time" is generally set to 60 seconds after the liquid contact reference time.
Pressing the test start button automatically completes the following test steps:
the method comprises the steps of receiving liquid in advance for reference time 2s, and measuring the reference mass of each liquid receiving pipe by a weighing sensor;
secondly, reaching the liquid receiving reference time, driving the liquid baffle plate to be in a non-shielding station by the servo motor II, and starting liquid receiving by the liquid receiving pipe;
thirdly, when the liquid receiving completion time is reached, the servo motor II drives the liquid baffle plate to be positioned at a shielding station;
fourthly, after the liquid receiving is delayed, the liquid receiving completion time is 2s, and the weighing sensor measures the completion quality of each liquid receiving pipe; the liquid collecting amount of each mist collecting groove is equal to the finished mass of each liquid receiving pipe minus the reference mass of each liquid receiving pipe, and the liquid collecting amount of each mist collecting groove is marked and stored in sequence;
fifthly, after the delay, the liquid receiving completion time is 4s, the servo motor I drives the turnover frame to turn over backwards for 150 degrees, the liquid in each liquid receiving pipe is poured, and after 3s, the servo motor I drives the turnover frame to turn over to the liquid receiving level and accurately position the liquid receiving level; meanwhile, the precise advance of the rail car is controlled to be 1500mm through the Gray bus vehicle-mounted subsystem, the Gray bus ground subsystem and the Gray bus subsystem; the 1 st liquid collection test was completed.
Sixthly, repeating the first step and the second step, carrying out a liquid collecting quantity test for the 2 nd time, and sequentially marking and storing liquid collecting quantities of all the mist collecting tanks; until the set "number of tests" is completed.
The tablet personal computer can display the liquid collection amount data of each mist collection groove (liquid receiving pipe), appoint and generate data of variation coefficient of spray amount distribution uniformity from the x-th groove to the x-th groove and chart type original record, and store the data.
Thus, the test for measuring the distribution uniformity of the liquid spraying amount of the boom sprayer is completed.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (10)
1. A spray uniformity test device is characterized by comprising a moving device; installing a positioning system and a frame on the mobile device; the turnover frame and the liquid baffle plate are arranged on the machine frame, the turnover frame is provided with a weighing sensor, the weighing sensor is provided with a row of liquid receiving pipes, and the turnover frame can turn over under the driving of the first motor; a mist collecting groove fixed on the frame is arranged above the roll-over stand, the bottom of the mist collecting groove is communicated with the inlet of a liquid guide pipe, and the liquid guide pipe is used for guiding the liquid flowing out from the mist collecting groove into a liquid receiving pipe; the liquid baffle plate is arranged at the outlet of the liquid guide pipe, and the second motor drives the liquid baffle plate to be positioned at a non-shielding station and a shielding station; the controller is communicated with the driving motor, the first motor, the second motor and the positioning system.
2. The spray uniformity testing device of claim 1, wherein said positioning system comprises a gray bus ground subsystem, a gray bus subsystem, and a gray bus onboard subsystem in communication with each other; the gray bus vehicle-mounted subsystem is mounted on the rail car.
3. The spray uniformity testing apparatus of claim 1, wherein said moving means comprises a rail and a rail car.
4. The spray uniformity testing device of claim 1, wherein a driving motor and a power supply are arranged on the rail car, and the driving motor drives the rail car to run on the rail through a chain wheel and a chain; the power supply supplies power to the whole device.
5. The spray uniformity testing apparatus of claim 1, wherein said liquid baffle is fixed to a rotating shaft, both ends of said rotating shaft are mounted on said frame, and said second motor drives said rotating shaft to rotate.
6. The spray uniformity testing apparatus of claim 1, wherein an acute angle is formed between the axis of said mist collection trough and the axis of said conduit.
7. The spray uniformity testing apparatus of claim 1, wherein said liquid conduit is connected to the bottom of said mist collection tank.
8. The spray uniformity testing apparatus of claim 1, wherein one liquid conduit corresponds to one liquid receiving conduit; the number of the liquid guide pipes is equal to that of the liquid receiving pipes.
9. The spray uniformity testing apparatus of claim 1, wherein the first motor and the second motor are servo motors.
10. The method for measuring the spray quantity distribution uniformity of a boom sprayer by using the spray uniformity test device as claimed in any one of claims 1 to 9 is characterized by comprising the following steps:
step 1, setting relevant parameters on a controller; comprises the steps of advancing, retreating and stopping of a rail car; testing times, liquid receiving reference time and liquid receiving completion time;
step 2, the weighing sensor measures the reference mass of each liquid receiving pipe;
step 3, the second motor drives the liquid baffle to be positioned at a non-shielding station, and the liquid receiving pipe starts to receive liquid;
step 4, when the liquid receiving completion time is reached, the second motor drives the liquid baffle to be positioned at a shielding station;
step 5, the weighing sensor measures the finished mass of each liquid receiving pipe, so that the liquid collecting amount of each mist collecting groove is equal to the sum of the finished mass of each liquid receiving pipe minus the reference mass of each liquid receiving pipe, and the liquid collecting amount of each mist collecting groove is sequentially marked and stored;
step 6, the first motor drives the turnover frame to turn over 150 degrees backwards, liquid in each liquid receiving pipe is poured, and after 3 seconds, the first motor drives the turnover frame to turn over to the liquid receiving level and accurately position the liquid receiving level; meanwhile, the rail car is controlled to accurately move forward for a set distance through a positioning system; the 1 st liquid collection test was completed.
Step 7, repeating the steps 1-6, carrying out the 2 nd liquid collection quantity test, and sequentially marking and storing the liquid collection quantity of each mist collection groove; until the set "number of tests" is completed.
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| CN202010442346.2A CN111678718B (en) | 2020-05-22 | 2020-05-22 | Spray uniformity testing device and spray amount distribution uniformity measuring method |
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| CN202010442346.2A CN111678718B (en) | 2020-05-22 | 2020-05-22 | Spray uniformity testing device and spray amount distribution uniformity measuring method |
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| CN111678718B CN111678718B (en) | 2022-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112781885A (en) * | 2020-12-29 | 2021-05-11 | 上海空间推进研究所 | Liquid collection test system for spray field of engine injector |
| CN113390663A (en) * | 2021-07-14 | 2021-09-14 | 农业农村部南京农业机械化研究所 | Liquid collection method and device for variable spray test |
| CN114088437A (en) * | 2021-10-25 | 2022-02-25 | 江苏大学 | Movable sprinkling irrigation unit sprinkling irrigation degree of consistency measuring device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114088437A (en) * | 2021-10-25 | 2022-02-25 | 江苏大学 | Movable sprinkling irrigation unit sprinkling irrigation degree of consistency measuring device |
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