SU117982A2 - Pneumatic se-planter - Google Patents

Description

Peculiarity of the plant St. No. 21562 consists in the fact that the grain-absorbing tubes intended for feeding the grain from the box to the seed pipes are mounted on a pipe rotatable in bearings, which communicates with the pneumatic cylinder through distribution channels in the sub-holders, and the valve mounted on the rotary pipe serves as a piston of the pneumatic cylinder.

The proposed plant is a further improvement of the plant by author. St. No. 21562, which provides a more accurate dosage of seeds in the nests, depending on their physical and mechanical properties, as well as a more uniform arrangement of them in the furrow. This is due to the fact that the sowing tubes are grouped three on each furrow and provided with replaceable tips, and all three branch pipes are arranged vertically, and the valve of the middle branch pipe is located along the machine and perpendicular to it — the valves of the end branch lines; the middle branch wire, besides , it is supplied with the second top valve.

FIG. 1 shows a side sowing device; in fig. 2 - the same, without seed box, back view; in fig. 3 - seed tip in the section; in fig. 4 - interchangeable tips, end view.

 The sowing tubes / are rigidly connected to a common air tube 2 installed in bearings. The air pipe is connected by the air pipe 3 to the cylinder 4, equipped with a piston, the rod of which is connected to the shoulder 5.

The movement of the seed tubes and the piston of the cylinder is transmitted by the gear 6, which is rotated from the tractor's power take-off shaft.

The second 7, equipped with a roller 8, the gear retracts the sowing tubes forward. By pressing the tooth at a point of 9 tons of ha, the sowing tubes are relieved by the action of the spring 10 and are turned back.

№ 117982

When the sowing tubes move forward, the seeds are sucked into the cells 11, and when moving backward, the seeds are blown into the seed pipes 12 fixed vertically to the seed frame.

The loose end of the rod is supported by the roller 13.

To avoid frequent movements that could disrupt the smooth operation of the mechanisms, the sowing tubes are grouped on each furrow. With this arrangement, the tubes, in one motion, separate the seeds from the total mass, and simultaneously blow them onto the valves a, b vi in three conduits, by means of which the seeds are alternately thrown into the nests.

The valve of the middle semiprovod is located along the machine and the valves of the outer semoprovods are perpendicular to it.

In order to increase the time interval for the release and blowing out of the seeds on the valves, the second upper valve 14, opened by cam b, is fixed on the middle seed line, following the closing of the lower valve.

The ejection of seeds from the seed pipes into the sockets is carried out by cams mounted on the cam shaft 15 which makes / s turn during the passage of the spacing between the sockets.

The roller is rotated by gear 16, interacting with a measuring nesting device (not shown in the drawing).

Periodically turning on the sowing devices is carried out by a roller cam 17, which, by deflecting the double-shouldered lever 18, lifts the thrust and engages the roller 8 in engagement with the gear 6.

In order to isolate the exact number of grains and the possibility of sowing this crop of different crops, interchangeable tips with separate cells were used, ensuring the seeding of a given number of grains, for example, for seeding one, two, three and four grains, with separate recesses for suction.

FIG. 3 shows a single-grain tip with bevel 19. Bevels in the nozzles are of great importance, since when tubes move in the seed medium, seeds trapped across the cells roll down but bevel, resulting in better conditions for filling the cells.

Cells at tips should have a tapered surface with rounded edges.

At the bottom of the folding scoop 20, protrusions 21 are made which assist in filling the tips cells.

In front of the seed box at the bottom, cones 22 are reinforced, which prevent the possibility of longitudinal shifts of the seed mass and contribute to lateral movements of the seeds.

An elastic plate 23 (brush or tension) is fixed inside the scoop 20 to remove excess seeds from the cells of the tips of the seeding tubes.

Subject invention

1. Pneumatic seder planter according to ed. St. No. 21562, in which case, in order to more accurately meter seeds into nests, depending on the physicomechanical properties of the seeds and more precisely, they are separated from each other in a furrow, the seed tubes are grouped into three they are equipped with interchangeable tips for each furrow, and all three branch pipes are located vertically, with the valve of the middle branch pipe located along the machine, and valves of the extreme branch pipes are located perpendicular to it, the middle branch line, in addition, is equipped with a second upper valve.