DE19839424A1 - Combine harvester with pre-seperator - Google Patents

Abstract

A combine harvester has the crop flow through the machine in one axial direction from pick up to the final separator. The threshing stage has a pre-separator (27) into which the crop is fed tangential. The flailing arms of the threshing stages are in a staggered arrangement as are the threshing baskets. The threshed crop is fed through a final separator leaving the straw and chaff to be handled separately. The relative alignment of the separate stages produces an axial work flow with a high separation efficiency.

Description

The invention relates to a self-propelled combine a cutting unit, a transfer drum and one in the axial river working, from at least one rotor housing and one in this rotatably mounted rotor, threshing and Separator.

Combine harvesters are known in which the crop is harvested by Crop conveyor screw of the cutting mechanism of a transfer drum is fed. The transfer drum transfers the crop the threshing and separating device.

The threshing and separating device is on these combine harvesters in the area between the front wheels, in one with the Ma machine frame arranged pivotally connected housing them consists essentially of a rotor and a rotor housing, the lower half of which is divided into basket areas.

Blow bars and tines are assigned to the circumference of the rotor.

Training is to a large extent for a good threshing result the threshing and separating device and the design of the Transitions to the individual separation areas of large Meaning.

The object of the invention is a self-propelled combine harvester with a cutting unit, a transfer drum and one in the axial river working, from at least one rotor housing and one in this rotatably mounted rotor threshing and Separator to be designed so that the cleaning device the maximum possible amount of grain spreader mixture is added and crop transport from the cutting unit to the cleaning device until the straw is ejected.  

According to the invention, the task of a combine harvester with a Cutting unit, a transfer drum and one in axial flow working, from at least one rotor housing and one in this rotatably mounted rotor threshing and separating device by the characterizing features of claim 1 solved.

Advantageous configurations of the solution according to the invention are Subject of subclaims 2 to 7.

The invention is illustrated below using an exemplary embodiment explained in more detail. Show in the accompanying drawings

Fig. 1 is a schematic representation of a combine in side view.

Fig. 2 is a schematic representation of the threshing and separating device with an upstream cutting unit and pre-separation area and a downstream post-separation area in a side view.

Fig. 3 shows the upper portion of FIG. 2.

Fig. 4 shows a pre-separation basket and a concave.

Fig. 5 shows the schematic representation of the transitions from the pre-separation basket to the concave.

Fig. 6 shows a cross section through a rotor.

In one illustrated in Fig. 1 combine harvester 1 and a threshing and Tenneinrichtung 26 shown in Fig. 2, with an upstream cutting unit 2 and a pre-separation portion 27 and a downstream Nachabscheidebereich 8, the crop material from the header 2 via a transfer drum 3 and a is Feeder 6 assigned to rotor 5 is fed to threshing and separating device 26 .

The crop is threshed out by the rotor 5 , which is provided with blow bars 21 , 30 and tines 20 . The rotor is driven by a rotor drive 7 . Advantageously, the blow bars 30 are staggered in height in the pre-separation area 27 , FIG. 6.

The threshed grain-spreading mixture falls through a preliminary separating basket 10 of a preliminary separating area 27 , a concave 11 of a threshing area 28 and a separating basket 12 of a separating area 29 onto a screw bottom 4 and is fed from there via a grain spreading conveyor 17 to a cleaning device 22 .

In the delivery area of the screw base 4 a, with a wall 16 telescopically operatively connected Kornspreuleitklappe 15 is arranged to control the relative movement between the screw 4 and ground to compensate for the grain-chaff auger 17th

In order to make the crop flow from the pre-separation area 27 to the threshing area 28 fluid, 11 transfer plates 18 , 19 , FIG. 5 are arranged between the pre-separation basket 10 and the concave.

After the grain-spreading mixture has been cleaned, the grains are fed to a grain tank 24 via grain elevators 23 .

The largely threshed straw is passed through the delivery area of the separating area 29 via telescopic straw guide plates 13 or slide plates 14 to the secondary separator device 8 .

Here, the remaining grain-chaff mixture is separated from the straw and falls through the basket-like design of the lower part of the after separating device 8 also on the grain chaff conveyor 17th

The threshed-out straw portions are transferred from the secondary separator device 8 to a chopper and straw depositing device.

Reference list

1

Harvester

2nd

Cutting unit

3rd

Transfer drum

4th

Screw bottom

5

rotor

6

Feed spiral

7

Rotor drive

8th

Post separator

9

Machine frame

10th

Pre-separation basket

11

Concave

12th

Separation basket

13

Straw baffle

14

Sliding plate

15

Grain spreader flap

16

wall

17th

Grain spreading auger

18th

Transfer plate, concave

19th

Transfer plate, pre-separation basket

20th

Tines

21

Blow bars

22

Cleaning facility

23

Grain elevators

24th

Grain tank

25th

Chopping and straw placement device

26

Threshing and separating device

27

Pre-separation area

28

Threshing area

29

Separation area

30th

Blow bars, pre-separation area

Claims (7)

1. Self-propelled combine harvester with a cutting unit, a transfer drum and an axial flow working threshing and separating device consisting of at least one rotor housing and a rotor rotatably mounted in the rotor, characterized in that the threshing and separating device ( 26 ) has a preliminary separating area ( 27 ) and a post-separation area ( 8 ) is assigned, the crop to be threshed being fed tangentially to the pre-separation area ( 27 ) and the threshed straw being tangentially delivered to the post-separation area ( 29 ) by the threshing and separating device ( 26 ). 2. Self-propelled combine harvester according to claim 1, characterized in that the pre-separation basket ( 10 ) of the pre-separation area ( 27 ) has a larger diameter than the concave ( 11 ) of the threshing area ( 28 ) and that in the pre-separation area ( 27 ) the rotor ( 5 ) on the circumference associated blow bars ( 30 ) are staggered in height. 3. Self-propelled combine harvester according to claim 1, characterized in that the post-separation area ( 8 ) is formed by a straw separator operating in the axial flow and having a basket in its lower half. 4. Self-propelled combine harvester according to claim 2, characterized in that between the pre-separating basket ( 10 ) and the concave ( 11 ) overlapping mutually movable guide plates ( 18 , 19 ) are arranged. 5. Self-propelled combine harvester according to claim 1, characterized in that between the separating basket ( 12 ) of the separating area ( 29 ) and the post-separating area ( 8 ) there are overlapping mutually moveable straw guide plates ( 13 ) and sliding plates ( 14 ). 6. Self-propelled combine harvester according to claim 1, characterized in that under the threshing and separating device ( 26 ) a screw bottom ( 4 ) which is connected via a grain spreader guide device ( 15 , 16 ) with a grain spreader conveyor system ( 17 ), angeord net. 7. Self-propelled combine harvester according to claim 1, characterized in that the pre-separation area ( 27 ), the threshing area ( 28 ) and the separation area ( 29 ) have a common rotor ( 5 ).