SU1314978A1 - Grain combine harvester - Google Patents

Abstract

The invention relates to the field of agricultural engineering. The purpose of the invention is to reduce losses during harvesting of seeds and reduce their clogging. The combine includes a conveyor with a mesh surface and a suction duct 18 installed under the straw walker. Inside the transport, the shaft is mounted and rigidly fixed to the frame of the combine; a partition 23 with a rubberized blade 24; A small pile with seeds having a high windage; air flow from the fan of the grain cleaning device is pressed against the mesh surface of the conveyor. In its upper zone, the seeds are removed by the suction duct, and the impurities pass through the conveyor and are fed into a stacker. 1 hp f-ly, 3 ill. and. sl f8 f3 20 O5 4 CO oo 22 2 /

Description

113

The invention relates to agricultural machinery, in particular to designs of combine harvesters used for harvesting seeds of desert forage plants.

The aim of the invention is to reduce losses when harvesting seeds of desert forage plants and to reduce their contamination.

FIG. 1 shows a combine for harvesting loose seeds; - in FIG. 2, the same cross-section; FIG. 3 is a section A-A in FIG. 2

The combine harvester used to harvest low-quality seeds contains header 1 with reel 2 and floating conveyor 3, threshing drum 4 with deck 5, pneumatic beater 6, straw walker 7, transport board 8, grain auger 9 and elevator 10, jamb sieve 11 , polisher 12 kopnitel, stacker 13, frame 14, chassis 15 and cleaning fan 16.

On the frame 14 of the combine for straw catcher 7, there is a small heap selector, made in the form of a conveyor 17 and a suction duct 1

with rubberized blade 19. Conveyor 17 includes rollers 20 and 21 upper and lower, on the edges of which gears 22 are rigidly fixed. External surfaces of rollers 20 and 21 are wound with a mesh surface. There is a partition 23 with a rubberized blade 24 mounted inside the conveyor 17 and fixed to the frame 14 of the combine.

The combine is equipped with a pneumatic conveyor 25 connected to a fan 26 and a bunker 27.

The combine works as follows.

The weight removed by the movement of the combine blades of the reel 2 is supplied to the cutting unit of the header 1. The cut mass is fed by a floating conveyor 3 into the threshing gap between the drum 4 and deck 5, where threshing occurs. A part of the seeds and small impurities (leaves, twigs, dust) pass through the holes of deck 5 and enter the transport board 8. The remaining mass (coarse stems) coming out of the threshing space is directed to the straw walker 7.

2

Solomotr 7 produces free seeds from coarse stems. A small pile (seeds, branches, leaves, dust) falling through the holes

Straw walker 7, the grooves of the keys poured onto the transport board 8,

Seed heap, the passage between - the fingers of the transport board 8, falls on the front of the louver

sieve 11, and long stalks and branches, slipping along the fingers of the transport board 8, fall closer to the middle of the sieve 11, then with a rammer of the half dialer 12 a heap is pushed into the chamber of the hopper 13.

A small amount of seeds passes through the holes of the louvered sieve 11 and enters the grain auger 9 and further along the grain elevator 10

into the bunker 27.

The main part of the seeds and small impurities (leaves, dust) due to the high windage flies to the outer mesh surface of the conveyor 17 under the influence of the air flow, which is created by the cleaning fan 16. Seed sticks to the outer mesh surface of the conveyor 17, and the remaining impurities (leaves, dust) are blown through its openings into the hopper 13 of the combine.

Separation of seeds from the mesh surface of the conveyor 17 takes place in its upper part in the suction zone of the duct 18. Rotating, the mesh surface of the conveyor 17 approaches the suction zone of the duct 18 and here due to the partition with the blade 24 prevents the ingress of impurities from the outside. In the area of the suction duct 18, the seeds are easily picked up by the air flow, which is created by the fan 26,

and with the help of a pneumatic conveyor 25, they step into the combine bunker 27. The blade of the blade 19 of the suction air guide 18 creates leaktightness during operation.

formula of invention

Claims (2)

1. A combine harvester containing a straw walker, a perforated fine-grain chopper installed under it, connected to the suction duct of a pneumatic conveying device, and a device for cleaning grain, different By the fact that, in order to reduce losses when harvesting seeds of lettuce forage plants and reduce their debris, the perforated pick-up of small pile is made in the form of a conveyor and installed behind the device for cleaning the grain. 2. A combine harvester according to claim 1, characterized in that the conveyor is provided with a partition located inside it in the area of the suction duct mounted on the frame of the combine and equipped with a sealing blade. l  /////////////// / y / 7 No. / V five g / SV ,: / t G ::: Lp11b four:. . avan guv p1 GU FIG g