CN2665013Y - Seeding device mounted on airplanes - Google Patents
Seeding device mounted on airplanes Download PDFInfo
- Publication number
- CN2665013Y CN2665013Y CN 200320131532 CN200320131532U CN2665013Y CN 2665013 Y CN2665013 Y CN 2665013Y CN 200320131532 CN200320131532 CN 200320131532 CN 200320131532 U CN200320131532 U CN 200320131532U CN 2665013 Y CN2665013 Y CN 2665013Y
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- CN
- China
- Prior art keywords
- seeding device
- section
- contraction section
- contraction
- settling chamber
- Prior art date
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Abstract
The utility model relates to an airborne seeding device arranged on an aircraft, which is composed of a gate box, an input material hole, a contraction section, a fairing and a divergent section, etc., wherein the gate box is arranged at the top of the contraction section; a steady section, the length L of which is 130mm to 160mm ,is extended out afterwards at the mouth of the contraction section; the circumference of the contraction section shaped in curve are contracted inwards and are connected with the steady section in a tact transition form, which forms an integrated structure. The utility model has the advantages that the seeding device is light; with the contracted circumference in a curve adopted, the contraction rate has been improved, and the speed of air flow has been quickened. In the condition of low speed of inlet air flow, the outlet speed of the material is increased, which improves the sowing width, effective sowing width and the evenness of the material. And every item index exceeds the level of the similar equipment at home and abroad.
Description
The utility model is a kind of installation seeding device aboard, belongs to woods and broadcasts equipment.It relates to the raising on structural improvement of present technical equipment and the performance.
Seeding device is most important parts in the woods broadcast system, and material relies on the effect of airflow injection, in seeding device, compress, and diffusion then, the seeding device that flies out is realized the plant seeds by airplane operation.The structure design of seeding device is very crucial, and the inlet air flow of seeding device should have certain speed, and fitness for purpose is about 100 kilometers/hour.Air-flow also will compress after entering seeding device, to improve the speed of air-flow.Drive the material diffusion that to sow then and sow out seeding device.Thereby make and sow material and fall to the ground certain sown scope and sow density.Effective sown scope of seeding device is to weigh the important indicator that woods is broadcast equipment performance with sowing density.External seeding device generally adopts corrosion-resistant steel welding, and straight line shrinks, and domestic also have many bent-tube boilers structure arranged side by side of employing.These project organization weight are heavier, simple in structure, and the plant seeds by airplane performance is general.
Purpose of the present invention is just at the deficiency that exists in the said goods, design the installation seeding device aboard that a kind of new structure is provided in conjunction with the characteristics of China's aircraft again.Its requirement is to design a kind of in light weight, simple in structure, seeding device that the plant seeds by airplane performance is high, and makes it to be suitable for the concrete airworthiness of Y12 aircraft.Offset owing to Y12 aircraft tricycle landing gear, do not have slip-stream etc. plant seeds by airplane operation (especially to seeding device) adverse factors.
The purpose of this utility model realizes by following measure:
This kind installation seeding device aboard, it is by the door box, charging hole, contraction section, assembly such as fairing and diffuser constitutes, wherein the door box is arranged on the top of contraction section, the leading portion of seeding device is connected the back with the door box and forms a rectangular horn interruption-forming curve contraction section, its effect is that enough air are incorporated in the seeding device, speed maximum when making air constantly quicken to reach throat, bin gate is arranged near the throat, making has certain negative pressure to the bin gate opening part, seed is unimpeded in the effect current downflow of deadweight and negative pressure, its concrete structural design features is, one section settling chamber stretches out in the edge backward in lip place at contraction section, its length L is 130～160mm, and the periphery four sides of contraction section is all inwardly shunk with the shape of curved surface and connected settling chamber and form integral structure with the rounding off form.
The drawing of accompanying drawing is described as follows:
Fig. 1 is the surface structure scheme drawing of the utility model product
Fig. 2 is the segmental structure scheme drawing of the utility model member
Below with reference to drawings and Examples the utility model product is further described:
Shown in accompanying drawing 1-2, this kind installation seeding device aboard, it is to be made of assemblies such as door box 1, charging hole 2, contraction section 3, fairing 5 and diffusers 6, wherein door box 1 is arranged on the top of contraction section 3, it is characterized in that, backward along stretching out one section settling chamber 4, its length L is 140～150mm at lip 7 places of contraction section 3, and the periphery four sides of contraction section 3 is all inwardly shunk with the shape of curved surface and connected settling chamber 4 and form integral structure with the rounding off form.Adopt the said structure design to be because, just to shrink the four sides all be dull and stereotyped to the seeding device contraction section of transporting five B aircraft seeding devices and U.S.'s import on two two sides up and down, their technology simple in structure is convenient.Lower surface is higher apart from ground because their aircraft is the tail wheel landing gear fuselage, and the preceding lip of seeding device has enough spaces, can obtain enough contraction ratios so can only just shrink contraction section up and down.And we to transport 12 aircraft seeding device contraction sections be that shrink at the four sides, it all is curve, this mainly is that the alighting gear that we transport 12 aircrafts is first three point, covering and ground distance are very little under the fuselage, seeding device lip height can not strengthen, and seeding device and door box are arranged all very difficult, only shrink up and down as the seeding device contraction section, contraction ratio can only reach 1.375, and the air rate at the place of shouting can only reach 75 meter per seconds.The agriculture aircraft of transporting the five B aircrafts and the U.S. all is the influence that monomotor is subjected to propeller race, seeding device venturi air rate can be up to 108 meter per seconds, Y11 aircraft seeding device venturi air rate 116.5 meter per seconds, evidence seeding device contraction ratio is very big to the influence of sown scope.Therefore transport 12 aircraft seeding device contraction sections in order to strengthen contraction ratio, improve throat's air rate, must shrink on four sides by the seeding device contraction section.Though transporting the seeding device contraction ratio of 12 aircrafts is 1.79.For reducing when the contraction flow, separates and loss air, one section settling chamber of contraction section lip place design, with slick and sly curve air-flow is guided to aditus laryngis 8 places then, be beneficial to air-flow and be compressed to certain speed, the value of rounding off bonded assembly circular arc R is 11～18mm between the periphery of contraction section 3 and the settling chamber 4.In addition, the rear portion of diffuser 6 is a swallowtail shape, and its both sides of the edge are 45 and outwards stretch.
Advantage of the present utility model is: the advantage of this seeding device is in light weight, adopts the four sides curve Seeding device after the contraction has improved shrinkage ratio, has accelerated the speed of air-flow. Little in inlet air flow speed Situation under, accelerated the muzzle velocity of material, thereby improved sown scope, effectively sown scope, material The uniformity, indices has all surpassed the level of domestic and international same category of device. This equipment exists at present Y12II type 24,25,26 machines, Y12IV type 03,09 machine, 04 on Y12E type waits aircraft Upper repacking, and operation flown for years, the user is reflected fine.
Claims (3)
1. installation seeding device aboard, it is to be made of door box (1), bin gate (2), contraction section (3), fairing (5) and diffuser assemblies such as (6), wherein door box (1) is arranged on the top of contraction section (3), it is characterized in that: locate backward along stretching out one section settling chamber (4) at the lip (7) of contraction section (3), its length L is 130～160mm, and the periphery four sides of contraction section (3) is all inwardly shunk with the shape of curved surface and connected settling chamber (4) and form integral structure with the rounding off form.
2. installation according to claim 1 seeding device aboard is characterized in that: the value of rounding off bonded assembly circular arc R is 10～20mm between the periphery of contraction section (3) and the settling chamber (4).
3. installation according to claim 1 seeding device aboard is characterized in that: the rear portion of diffuser (6) is a swallowtail shape, and its both sides of the edge are 45 and outwards stretch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131532 CN2665013Y (en) | 2003-12-30 | 2003-12-30 | Seeding device mounted on airplanes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320131532 CN2665013Y (en) | 2003-12-30 | 2003-12-30 | Seeding device mounted on airplanes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2665013Y true CN2665013Y (en) | 2004-12-22 |
Family
ID=34350226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320131532 Expired - Fee Related CN2665013Y (en) | 2003-12-30 | 2003-12-30 | Seeding device mounted on airplanes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2665013Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416530A (en) * | 2016-08-11 | 2017-02-22 | 华南农业大学 | Agricultural unmanned aerial vehicle-mounted material spreading device and method |
| CN110015423A (en) * | 2019-04-09 | 2019-07-16 | 中国气象科学研究院 | A kind of airborne flame sowing apparatus |
-
2003
- 2003-12-30 CN CN 200320131532 patent/CN2665013Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106416530A (en) * | 2016-08-11 | 2017-02-22 | 华南农业大学 | Agricultural unmanned aerial vehicle-mounted material spreading device and method |
| CN110015423A (en) * | 2019-04-09 | 2019-07-16 | 中国气象科学研究院 | A kind of airborne flame sowing apparatus |
| CN110015423B (en) * | 2019-04-09 | 2024-02-09 | 中国气象科学研究院 | Machine carries flame bar to broadcast and spills device |
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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: 20041222 Termination date: 20121230 |