CN2232184Y

CN2232184Y - Wheat single-grain precision drilling apparatus

Info

Publication number: CN2232184Y
Application number: CN 95239668
Authority: CN
Inventors: 蹇兴东; 彭嵩植
Original assignee: Nanjing Agricultural University
Current assignee: Nanjing Agricultural University
Priority date: 1995-04-28
Filing date: 1995-04-28
Publication date: 1996-08-07
Anticipated expiration: 2005-04-28

Abstract

The utility model relates to a wheat single-grain precision seeding apparatus exclusively used for precise wheat single-grain seeding in various wheat precision seeder, in which a drum-shaped cylinder 1 is sheathed in a drum-shaped case 5 ad is fixed on one end of an axle, and a seat 6 of a plate-shaped seed scraper is fixed on the end cover of the case; the cylinder is provided with a shaped orifice 2, a seed charging wheel 3 presses against the shaped orifice 2, the case is provided with a seed inlet 7 on the end cover and a seed outlet 4 on the lower part. The utility model has the advantage of simple and reasonable structure and achieves precise wheat single-grain seeding, and each seeding performance index reaches or exceeds advanced stages at home and abroad; the breakage rate of the seeds is low, and one seeding apparatus can sow 3-6 lines of wheat simultaneously.

Description

Wheat simple grain precision seeder

The utility model relates to a kind of wheat simple grain precision seeder that uses on precision grain drill of wheat, be exclusively used in the wheat simple grain precision metering device of various precision grain drill of wheat.

The best wheat precision seeder of performance is cone disk type wheat precision seeder (document sees reference: RESEARCH OF PRECISION WHEAT SEED METERING DEVICE, the 2nd phase of " agricultural mechanical journal " June in 1989, P25-31) both at home and abroad at present.Its operation principle is, the awl dish horizontally rotates, and seed charges among the type hole on the awl dish circumference by gravity, and the rubber seeds scraper scrapes off the unnecessary seed outside the type hole, launches downwards under the pressure of the seed in the type hole by gravity and seeds depositing wheel.Cone disk type wheat precision seeder can be realized the seeding of wheat simple grain, and every performance indications have also reached higher level, and a cone disk type seeding unit can be broadcast the triplex row wheat simultaneously, but the cone disk type seeding unit also has the following disadvantages:

1, the factor that is unfavorable for filling kind is structurally arranged.The awl dish horizontally rotates, and the direction of motion when centrifugal force direction that seed is subjected to and seed charge into the type hole is orthogonal, is unfavorable for filling kind, also is unfavorable for further improving dropping frequency.

2, adopt the rubber seeds scraper, easy wearing and tearing can cause the sowing quantitative change big, the inconsistent and seed breakage rate increase of each row discharge capacity.

3, need Bevel Gear Transmission, increased the complexity and the manufacturing cost of transmission.

4, can not realize that a seeding unit broadcasts the above wheat of four lines simultaneously, limit the further simplification of sower general structure.

The purpose of this utility model just is to overcome weak point of the prior art, provides that 2-6 kilograms every mu of a kind of wheat cultivation amounts, every seed-metering performance index meet or exceed that cone disk type wheat precision seeder, seed breakage rate are low, seeding unit can be broadcast 3-6 row wheats simultaneously, simple and reasonable drum-type wheat simple grain precision seeder.

The purpose of this utility model realizes by following measure:

One grow wheat simple grain precision seeder is made up of seeding cylinder, seed scraping device, seeds depositing wheel and housing etc.It is characterized in that, the cylinder 1 of drum shape is sleeved in the seeder unit shell 5 of drum shape, cylinder one end is fixedly mounted on an end of axle 10, type hole 2 is arranged on the cylinder, one side of plate shape seed scraping device base 6 is fixed on the bottom of housing end plug 11, housing end plug 11 tops have seed inlet 7, lower housing portion has rectangle sowing port 4, seed scraping device base 6 bottoms have gap 13 corresponding to place, type hole, the seed scraping device susceptor surface has groove corresponding to 2 places, type hole, be equipped with in the groove can move up and down scrape kind of tongue 14, cover plate 15 is fixed together with seed scraping device base 6, plate shape support 19 upper ends are fixed on the seed scraping device base 6, pin 17 has been triangularly arranged on the

support

19,18,20, one end of spring 16 and spring 21 all is fixed on the pin 18, the other end of spring 16 can rotate and be pressed on around pin 17 scrapes kind of tongue 14 upper ends, the other end of spring 21 can rotate and be pressed on the wheel carrier 12 of charging seed around pin 20, seeds depositing wheel 3 is pressed on the type hole 2, type hole on the cylinder is along cylinder axis direction distribution 3-6 rows, every row's type hole evenly distributes along roll circumference, every row's type hole is to scraping kind of tongue 14 and seeds depositing wheel 3, place, the every row's type of inner wall of rotary drum hole has the seed guiding groove 22 that cross section is a circular arc, 3 of seeds depositing wheels are pressed in the seed guiding groove 22, seeds depositing wheel is made by elastomeric material, as rubber etc.

The utility model has been compared following advantage with prior art cone disk type seeding unit:

Direction of motion when 1, the centrifugal force direction that is subjected to of seed charges into the type hole with seed is consistent, utilizes the kind of making a concerted effort to fill of gravity and centrifugal force, helps filling kind, helps improving dropping frequency, and is rational in infrastructure.

2, scraping kind of tongue can move up and down, oblique endways two seeds in the type hole, above unnecessary seed just in case when scraping to fall, under the thrust of seed, scraping kind of tongue can move upward, and lets slip this unnecessary seed, therefore, plant effective clearly and do not damage seed.

3, transmission is simple, does not need Bevel Gear Transmission.

4, meet or exceed existing state-of-the-art cone disk type wheat precision seeder both at home and abroad according to being designed into every performance indications of measuring by international GB6973-86 " simple grain (precision) sower test method ".

5, a seeding unit can be broadcast 3-6 row wheats simultaneously, and the sower general structure is further simplified, and reduces cost, and raises the efficiency.

The drawing explanation:

Fig. 1: wheat simple grain precision seeder front view

Fig. 2: cutaway view is looked on a wheat simple grain precision seeder left side

Fig. 3: wheat simple grain precision seeder structural representation

Describe the structure of the utility model simple grain precision seeder in detail below in conjunction with accompanying drawing.

The cylinder 1 of drum shape is sleeved in the housing 5 of drum shape, the cylinder upper edge axis direction 4 row's type holes 2 that distributing, place, the every row's type of cylinder 1 inwall hole has the seed guiding groove 22 that cross section is a circular arc, one end of cylinder 1 is fixed on an end of axle 10, axle 10 is supported by the bearing 8,9 that is fixed on the housing 5, the other end of axle 10 is installed sprocket wheel, drives cylinder 1 by chain gear transmission and rotates.Housing 5 is fixed on the sowing frame, and housing end plug 11 is fixed together with housing 5, and housing end plug 11 tops have seed inlet 7, and from then on seed enters in the cylinder, and housing 5 bottoms have the sowing port 4 of rectangle.Plate shape seed scraping device base 6 is converted into 100-150 ° of angles, seed in the cylinder is separated with the mechanism of charging seed, one side of seed scraping device base is fixed on housing end plug 11 bottoms, seed scraping device base bottom has gap 13 corresponding to place, type hole, the seed scraping device susceptor surface has groove, be equipped with in the groove can move up and down scrape kind of tongue 14, cover plate 15 is fixed on the seed scraping device base.Plate shape support 19 upper ends are fixed on the seed scraping device base,

17,18,20 has been triangularly arranged on the support 19, one end of spring 16 and spring 21 all is fixed on the pin 18, the other end of spring 16 can rotate and be pressed on around pin 17 scrapes kind of tongue 14 upper ends, the other end of spring 21 can rotate and be pressed on the wheel carrier 12 of charging seed around pin, wheel carrier 12 upper ends of charging seed are installed on the pin 20, and the lower end is equipped with seeds depositing wheel 3, and the pressure of spring 21 is pressed in the seed guiding groove seeds depositing wheel 3.Rotation along with cylinder, seed in the cylinder makes a concerted effort to charge in the type hole 2 by gravity and centrifugal force, generally charges into a seed in each type hole, when the type hole goes to seed scraping device following time, unnecessary seed outside the type hole is blown off, and the seed in the type hole is launched sowing port 4 downwards by the pressure of gravity and seeds depositing wheel.As meet in the type hole tiltedly endways two kind period of the day from 11 p.m. to 1 a.m can move up and down owing to scrape kind of tongue, above a unnecessary seed can will scrape kind of a tongue and upwards boost, this unnecessary seed is let slip by seed scraping device, and is not damaged by base gap 13, so, plant effective clearly.This simple grain precision seeder can be used on the large, medium and small type precision grain drill of wheat, once sow 4 row, the wheat cultivation amount can be at 2-6 kilograms every mu with interior adjusting, also can be used for every mu of constant sowing more than 6 kilograms of wheat cultivation amount, after improving, also can be used for the simple grain precise sowing of other crop.Adopt drum-type wheat simple grain precision seeder that the sower general structure is further simplified, improve seeding quality, improve operating speed.

Claims

1, a grow wheat simple grain precision seeder, it is characterized in that, the seeding cylinder 1 of drum shape is sleeved in the seeder unit shell 5 of drum shape, cylinder one end is fixed on an end of axle 10, and type hole 2 is arranged on the cylinder, and a side of seed scraping device base 6 is fixed on housing end plug 11 bottoms in the cylinder, housing end plug 11 tops have seed inlet 7, housing end plug 11 is fixed together with housing 5, and housing 5 bottoms have sowing port 4, and seeds depositing wheel 3 is pressed on the type hole 2.

2, wheat simple grain precision seeder according to claim 1 is characterized in that, seeding cylinder 1 upper edge axis direction 3-6 row's type holes 2 that distributing.

3, wheat simple grain precision seeder according to claim 2 is characterized in that, the place has the seed guiding groove 22 that cross section is a circular arc in the every row's type of seeding cylinder 1 inwall hole.

According to the described wheat simple grain of one of claim 1-3 precision seeder, it is characterized in that 4, seed scraping device base bottom has gap 13 corresponding to place, type hole.

5, according to the described wheat simple grain of one of claim 1-3 precision seeder, it is characterized in that, have groove corresponding to 2 places, type hole on the seed scraping device susceptor surface, be equipped with in the groove can move up and down scrape kind of tongue 14.

6, wheat simple grain precision seeder according to claim 4 is characterized in that, has groove corresponding to 2 places, type hole on the seed scraping device susceptor surface, be equipped with in the groove can move up and down scrape kind of tongue 14.

7, wheat simple grain precision seeder according to claim 5 is characterized in that, scraping has cover plate 15 on kind of the tongue 14.

8, wheat simple grain precision seeder according to claim 6 is characterized in that, scraping has cover plate 15 on kind of the tongue 14.