SU1752253A1 - Grain combine harvester - Google Patents

Abstract

Usage: the invention relates to agricultural machinery. SUMMARY OF THE INVENTION: A combine harvester comprises a keyboard solomotr. In the area of the outlet windows of the keys there are nozzles of nozzles of the means for creating a sex transporting air stream. The tool is equipped with a pulsator with a distributor, kinematically connected to the crankshaft of the straw walker to synchronize the air pulses with the movement of the keys. Additional air flow from the product instantaneously blows the space between the straw walker and cleaning, carrying the chaff out of the threshing device and freeing up space for the pile falling onto the cleaning of the straw walker, which eliminates the re-entry of chaff into the cleaning sieve and improves the air separation of the pile 1 H.p. . f-ly 5 silt

Description

FIELD OF THE INVENTION The invention relates to agricultural machinery.

The purpose of the invention is to improve the quality of cleaning.

FIG. 1 shows the proposed combine, side view: in FIG. 2 shows a top view of the means for creating a floor transporting air; FIG. 3 - the same, side view; 4 shows a pulsator with a distributor; in fig. 5 is a section A-A in FIG. four.

The combine harvester contains a moulder-separator 1. installed behind it in the course of the technological process, a keyboard stroller with 2 and a wind-screen device 3 located below for separation of the grain of oorokh. The device 3 consists of the front board 4 located under the device 1, the main fan 5, the front 6 and the bottom 7 sieves, the grain 0 and the head 9 augers. Solomotr with 2 has a few keys 10. in

In the area of the exit windows 11 of their bottoms 12, the nozzles 13 of the nozzles 14 of the means for creating a sex transporting air stream are located. Moreover, the nozzle 13 is made of different shapes. The nozzles 15, located in the center of the keys 10, have an isosceles shape for the symmetrical distribution of the air flow. Nozzles 16 are made in the form of rectangular truncated triangles for directing air flow individually for each key.

The means for creating a sex transporting air stream includes a housing 17 with ball bearings 18, a pulsator in the form of an oil 19 with an axial 20 and 21 radial holes, an asterisk 22 connected by transferring 23 to the crankshaft 24 of the straw walker to synchronize the air pulses with the movement keys 10 and air flow distributor. The pulsator is connected to source 25

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compressed air and includes a distribution head 26 with holes 27 in the rings 28 and 29 and fittings 30 mounted on the head 26. The distributor consists of pneumatic lines 31. associated with fittings 30 on the one hand and nozzles 32 on the other side. Nozzles 13, 15 and 16 are connected to openings in nozzles 32.

To reduce the size of the output windows 11, a board 33 can be installed in their front part. A wiring board 33 can be installed. It is advisable to fix the tool on the side of the combine. In the design of the pulsator, you can use the automotive distribution head for tire inflation on the go.

Combine harvester works as follows.

The mowed grain mass is threshed by a threshing-separating device 1. The straw straw comes to the straw walker with 2, and the grain pile goes to the page board 4. The grain sopox at the descent to the upper sieve 6 is affected by the air flow from the fan 5, while fine and light particles of the non-cereal fraction, such as chaff, rise and soar above sieve 6, and grain and large non-grain particles are processed on sieves, where they are divided into fractions. The floor hovering over the sieve 6 is picked up by the pulsed air flow from the means for its creation and is carried beyond the threshing and separating device 1.

The tool generates compressed air pulses exiting the nozzles 13 at high speed. Such air streams instantly pick up and carry out all non-grain particles, soaring in the space between the sieve b and the keys 10 of the straw walker 2.

When the straw walker 2 is operated, its keys 10 perform circular movements, alternately raising and lowering. Due to these oscillations, the large straw heap located on its surface is stratified into fractions. A pile of grain with small non-grain and straw particles spills down and along the floorboard 33, as well as the inner surface of the bottom 12 is poured to the exit window 11, where it falls down onto the device 3. Large straw straws are transported to the exit from the hammer 1. When moving up and back, each key 10 pushes straw to the exit, and when it moves down and forward it pushes a small pile to window 11 and drops it down to the devices 3. At the time of reset, press

10 small heaps of grain per device 3; the air flow from the agent is undesirable, since strong air pulses together with non-grain particles can

pick up the grain and remove it from the processing area. To prevent this, the movement of the air flow means is synchronized with the movement of the keys 10. Transporting air impulses

served for each key 10 at a time when there is no fine grain pile reset through window 11 of key 12 to device 3.

The air flow rate L from the fan 5 is enough to lift the small non-grain particles above sieve 6, but not enough to transport them outside the device 1. If you increase its capacity, it will pick up and carry away the grain. The impulses of compressed air from the means, coming out of the nozzles 13, 15 and 16 at a speed of / 2, pick up the soaring non-grain particles and transport them with the resulting velocity Vp

device limits 1. In the intervals between the air flow pulses of the medium, the grain from the straw walker 2 has time to wake up on the device 3, which excludes its removal from the treatment area and, accordingly, loss.

Periodic air pulses are generated in the vehicle by means of a pulsator, namely compressed air entering the head 26 from source 25 (compressor

or fan) while rotating the shaft 19 alternately enters the holes 27 of the rings 28 and 29, when they coincide with the hole 21 on the shaft 19. Through the fittings 30, the compressed air enters the pneumatic lines 31, and then to

nozzles 13

Thanks to the isosceles nozzles

15 and a truncated rectangular nozzle shape

16 air pulses do not capture the space under adjacent keys 10 where

At this moment a small pile of waste may occur.

Due to the fact that the velocity V2 of compressed air can reach tens of meters per second, the rotation of the shaft 19, reaching

3-4 rev / s does not interfere with the pulsed air supply. As practice has shown, compressed air in the required amount goes to the nozzles even if the pulse time lasts only

only 0.2 s. The diameter of the nozzle openings is only 10-15 mm.

The proposed design of the means for creating a sex transporting air stream makes it possible to increase the pro1e2752253

Claims (2)

water purification, while excluding the loss of grain from its removal by air currents. Claims 1. A combine harvester comprising a threshing and separating device, a keyboard straw walker behind it, the output windows of the key bottoms of which are located above the wind-resolving device for separating the grain ore with a plank placed under the threshing-separating device, fan and means for creating a sex transporting air stream having several nozzles with nozzles, characterized in that. with the aim of Ј / FIG. 2 0 five improving the quality of cleaning, the means for creating a floor transporting air stream is equipped with a pulsator with a distributor pneumatically connected to the straw walker's crankshaft, while the nozzles of the nozzles of this means are located in the outlet zones of the straw walker buttons. 2. Combine pop. 1. about tl and h and y y and y with. that the pulsator is made in the form of a shaft with axial and radial holes connected on one side with a source of compressed air, and on the other with a distributor A-A 1752253 fig.Ch