SU1683531A1 - Sowing apparatus - Google Patents

Abstract

The invention relates to an agricultural technique, in particular, to seedlings for precise sowing of seeds. The purpose of the invention is to improve the quality of single seed selection and their transportation at higher speeds. The metering apparatus comprises a housing 1, a metering disk 2 with through seed cells communicating with an annular groove, a transporting disk 4 with grooves for receiving and transporting seeds. The disk 4 is fixed rigidly on the shaft, and the disk 2 freely rotates on it. The disk 4 has on the end surface grips in the form of beveled protrusions with an oblique surface adjacent to the grooves. In the partition 10, mounted between the disks 2 and 4, there are holes 11 for transferring the seeds from the cells of the disk 2 to the grooves of the disk 4 and 12 to eject the seeds into the furrow. To push the seeds into the hole 11, an ejector 13 with radially spaced pins is used. The vehicle is driven from the support wheel. A wiper roller 18 removes excess seeds, and the reflector 20 prevents seeds from being thrown over roller 18. When seeds are sown, the latter fall into the cells of disk 2, are pushed into the grooves of disk 4, and are transported to the place of sowing. 2 hp ff, 3 ill.

Description

The invention relates to the field of agricultural engineering, namely to seeders for precise sowing of seeds.

The purpose of the invention is to improve the quality of a single selection of seeds and their transportation at high speeds.

In FIG. 1 shows a metering apparatus, side view; FIG. 2 is a section AA in FIG. 1; in FIG. 3 - scan of the outer surface of the transport disk and the annular groove of the metering disk.

The sowing apparatus consists of a housing 1 (in FIGS. 1 and 2), a metering disk 2 with through seed cells 3 communicating with the annular groove, and a transporting disk 4 with grooves 5 for receiving and transporting the seeds. The disk 4 is rigidly mounted on the shaft 6, and the disk 2 freely rotates on it. The disk 4 on the end surface has jaws 7 (Fig. 2) in the form of beveled protrusions with an oblique surface 8 adjacent to the grooves 5. 10 in the form of a ring. In the partition 10, a hole 11 is made for transferring seeds from the cells 3 of the metering disk 2 to the grippers 7 and a hole 12 for ejecting seeds into the furrow. To eject seeds from the cells 3, the ejector 13 is designed in the form of a roller with radial pins included in the cells 3. The ejector 13 and the block 14 are fixedly mounted on the shaft 15, which receives rotation through a chain gear 16 from the support wheel. Thus, the ejector 13 simultaneously drives the metering disk 2. From the ring gear of the block 14 through the block 17, the rotation is transmitted to the cleaning roller 18 and then through the chain drive 19 to the transport disk 4.

The angular velocity of the transport disk 4 is higher than the angular velocity of the metering disk 2 -P- times, where η is the number of cells 3 of the metering disk 2, and k is the number of captures 7 of the transport disk 4. The peripheral speed of the captures 7 is equal to or close to the speed of the unit and is directed in the opposite direction.

The reflector 20 prevents the transfer of seeds through the wiper roller 18.

The metering device operates as follows.

Seeds from the hopper under the action of gravity enter the loading zone of the metering disk 2, fill the cells 3 and, when rotated by the ejector 13, move along the stationary annular partition 10 to the hole 11 in it. The cleaning roller 18 removes excess seeds. The seeds remaining in the cells 3 are pushed by the pusher 13 through the hole 11 of the baffle 10 into the annular groove 9 of the metering disk 2, in which the grippers 7 move at a faster speed. Once on the oblique surface 8 of the gripper 7, the seed moves along it to the right (Fig. 1 and 3) into groove 5 of the transporting disk from position I to position II. In this case, the seed is centrifugally pressed against the annular septum 10 and transported to the exhaust window 12, since the speed of the seeds at the time of departure is equal to the speed of the aggregate and directed to the opposite side. Their speed relative to the furrow is equal to or close to zero, which practically eliminates them rolling along the furrow. The ratio of the angular velocities of the metering 2 and the transport disk 4 ensures that one seed gets into the grips. Since the angular velocity of the metering disk 2 is lower than the speed of the transport disk, reliable filling of the cells with seeds is ensured. The presence of the ejector 13 eliminates the clogging of the cells 3 of the metering disk 2 seeds of a non-circular shape.

Claims (3)

Claim 1. A sowing apparatus comprising a seed hopper, a housing in which a metering disk with seed cells and a transport disk with grooves for receiving and transporting seeds are mounted on a common axis with a gap, a stationary partition located in the gap, characterized in that, for the purpose of to improve the quality of single selection of seeds and their transportation at higher speeds, grabs in the form of beveled protrusions are made on the end surface of the transport disk, the oblique surfaces of which adjoin the grooves and are located inside the dose uyuschego disk, a baffle is made in the form of rings with holes in the seed transfer zone in the transport disc and the grippers in the zone of its seed ejection slots. 2. The apparatus according to claim 1, characterized in that the transport disk has an angular velocity greater than the metering one. 3. The apparatus according to claim 1, with the fact that in the zone of seed transfer in the metering disk, an ejector is installed in the form of a roller with radial pins. Aa Φϋ2..3