SU1367888A1 - Precision drill - Google Patents

Abstract

The invention relates to an agricultural machinery industry. The aim of the invention is to increase productivity while improving the uniformity of the seed in the furrow. The seed section consists of a seed hopper with a base, over which the metering disc 3 with through holes is placed by the cells 4. Above the cells are installed blowing devices (PU) 6 and 7. In the lower part of the disc there are seven wires of equal length, fixed output ends in the centurion 10. Each subsequent PU 7 is shifted relative to the previous PU 6 by a central angle defined by the relation JI (360 + i) n, where ef is the central angle between the axes of the cells; n - the total number of PU. The output ends of the seed wires 9 are directed to one point on the axis of symmetry of the opener 10. When the metering disk is rotated, the 3 cells 4 are filled with seeds. When the seed is transported in cell 4 under PU 6, it is blown out with compressed air into the furrow 9. At this time, PU 7 is located between the cells and no seed will occur. Upon further rotation of the disk, the cell falls under PU 7, while PU 6 occupies a position between the cells and seeding occurs from the cell under PU 7. 3 Il. I (L with

Description

with about:

ac 00

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9m)

FIELD OF THE INVENTION The invention relates to agricultural machinery, in particular, to precision seed sowing of seed crops, mainly sugar beet.

The purpose of the invention is to increase the productivity of sowing while improving the uniformity of the location of seeds in the furrow.

FIG. 1 shows schematically one sowing section of an exact seeding pitcher with two blowing devices, rear view; in fig. 2 is a view A of FIG. one; in fig. 3 - section, top view.

The precision seeding section contains a seed bin 1 (Fig. 1) with a base 2, above which a metering disc 3 with through-holes is placed by the cells 4. The disc 3 is mounted on the drive shaft 5. Two blowing devices 6 and 7 are fixed to the hopper 1 above the disk 3 is coaxial with the holes in the anti-friction sealing ring 8, for example, fluoroplastic, which is made in the recess of the base 2. The disk 3 rests on. the plane of the ring 8. Sem wires 9 of equal length are installed at one end on the base 2 coaxially with the corresponding blowing device 6, 7 and the hole of the ring 8, and the other end in the vomer 10. The axes of the output ends of each seven wire 9 are directed to one point relative to the opener base 10. The opener 10 is rigidly fixed to base 2 (Fig. 2), Bunker 1 is mounted on the frame with a forward parallelogram suspension 11 and rests on number 12. Each subsequent purge device 7 is displaced. relative to the previous device 6 at the central angle defined by the ratio

360 + oi

P

jb - the value of the central angle

between purge devices;

the central angle between the axes of the cells;

total number of purge devices.

 Seeding, depending on the required working width, is completed with the necessary number of sowing sections.

0

25

Selka works as follows.

When the drive shaft 5 rotates (fig. 1) of the metering disk 3, its g holes 4 are filled with seeds from the hopper 1. The ring 8 prevents seeds from falling out everywhere except the installation points of the blowing devices 6 and 7. In addition, the ring 8 is prevented It causes a breakthrough of compressed air into the gap between the disk 3 and the base 2 and eliminates friction between them, being the supporting surface for the disk 3.

15 Mating a disk - ring at the place of installation of the blowing device ensures sufficient sealing to prevent air from breaking through into the neighboring cells. Since the distance between the cells is 3-4 times longer than the distance from the cell to the outer edge of the sealing ring, a small amount of air penetrating between the surfaces of the disk and the sealing ring goes in the direction of least resistance, i.e. along the radius of the disk. Seeds in the cells 4 are transported by the rotating disk 3 to the purge

0 devices. When cell a is the same. with the blowing device 6 (fig.Z) and the corresponding hole in the ring 6, seeding occurs (blowing) of the seed with compressed air into this wire

35 9. At this moment, the purge device 7 and the axis of the corresponding opening of the ring 8 are between the cells m and c. When the disk 3 is further rotated by 1/2 the angle between the neighboring cells, the tn cell with the seed takes up the position under the center of the purge device 7 opposite the axis of the holes, in the ring 8 and the base 2, it is sown in this wire 9.

5, the cells "and b are shifted together with the disk 3 by 1/2 of the angle between the cells and are equidistant from the purge device 6. Thus, the alternate

0, even interval seeding of seed by blowing devices 6 and 7. After sowing a seed of cells 4, they move along the seven wires 9 and enter the furrow formed by the opener 10 (FIG. 2), 5 alternately from the blower 6, then from the device 7. Due to the high speed provided by compressed air, seeds are introduced into the soil at the point of first contact.

And at the same time, the soil is covered with soil by the vomer wings 10.

Soil unevenness is copied by the wheel 12, while the sowing section moves in a vertical plane on the parallelogram suspension 11,

At a constant speed of the disk metering device, in one revolution, the number of seeds is sown, equal to the number of metering cells multiplied by the number of blowing devices,

As a result, it is possible to increase the translational speed of the crop, and, consequently, its productivity while improving the uniformity of sowing at a constant speed of rotation of the disk, which is optimal for filling the cells with seeds. To do this, the drive ratio of the metering disc drive is changed.

The implementation of an air supply system in the form of, for example, two separate blowing devices installed on a cell circumference, provides twice the number of seeds sown per revolution, which allows increasing the working speed of the crop at the same time with constant (optimal for filling cells by seeds) rotational speed of the disk feeder.

The installation of additional blowing devices ensures equal intervals to the seed wire, alternately from each blowing device with normal filling of the cells,.

The direction of the output ends of the wires: of equal length to a single point of the coulter of the coulter ensures equal spacing of the seeds coming from the blowing devices of the apparatus in one row.

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1367888-

The proposed crop provides an increase in the number of seed dispensed by a seed dispenser by 2-4 times due to an increase in the sowing speed to 15 km / h and, accordingly, ensures an increase in the productivity of sowing by 1.5-2.5 times.

Claims (1)

Invention Formula I A precision seeding mill containing a hopper, a metering disk with through-holes for seed and a blowing device installed above the disk, communicated through the holes in the disk with this wire, a compressed air supply system and a vomer, characterized in that productivity while improving the uniformity of the location of seeds in the furrow, it is equipped with additional blowing devices and these wires, with each subsequent blowing device shifted relative to the previous along the arc of a circle connecting the centers of the cells, the central angle formed between them being determined by . ° vA 360 + A P where Ji- the size of the central angle between the purge devices; "I - the central angle between the axes cells; n - the total number of purge devices at the same time, these wires are made of the same length, fixed on the vomer, and the continuations of their longitudinal axes have an intersection point on the axis of symmetry of the vomer. dida 1g O3ig.1