DE19734231A1 - Combine harvester used in corn field - Google Patents

Abstract

There are chaff and straw laying devices (5) whose outlet openings are associated with the chaff and straw guide devices (6-8). They are mounted on the circumferential side on the straw separator and are driven by a speed adjuster device connected with the drive unit (12). The chaff and straw guide device comprises a chaff guide flap (7), guide plate (6) and cut straw guide plate (8) which can be adjusted by the speed adjuster. The speed adjuster comprises two reduction gear discs mounted on the shaft supporting the output discs for the chaff and straw laying device and brought into engagement alternately by the clutch.

Description

The invention relates to a combine harvester with one, one rotating drum with conveyor strips arranged on the circumference and an existing straw separator, which is under half of the straw delivery area of a threshing and separating device is arranged transversely to the direction of travel and one with an on drive device connected on both sides of the straw separa tors arranged chopping and straw depositing device.

Combine harvesters are known in which the separator used from a driven drum with för arranged on the circumference which lasts. The drum is in the upper range of one Surround the cover, on the inside of which guide strips are arranged are not. In the lower area the drum is from a separator basket enclosed. The straw arrives from the threshing device the inlet opening of the straw separator and from there on the Surface of the drum after several orbital movements of the Center promoted to both side areas where Chopping devices are arranged. For this purpose, the Drum in these areas with several distributed around the circumference tidy chopping knives. In axial extension of the Ab cutting baskets are counter-cutters on swiveling flaps strengthens that interact with the chopping knives. If that If the straw is not to be chopped, the flaps with the Counter-cutting away from the area of action of the chopping knife pivots, and the straw is chopped out of the straw separator promoted. Because with this chopping device only a counter-cut de is present, is inevitably only a large chop length of straw achievable. As a result of the long stem parts there are disadvantages in the subsequent soil cultivation as well as the slow rotting of the straw. Furthermore occur under unfavorable harvesting conditions and crops a higher moisture content in straw chunks get rich. Eliminating them reduces the potential productive Operating time of the combine harvester and thereby sets its performance ability down.  

In another known combine harvester, the straw is made from the Separator coming in on both sides of the combine nete channels transported into the rear of the combine and deposited by a straw storage device or by a downstream chopper chopped. Here is after part that the straw over the entire length of the combine must be transported.

The object of the invention is to provide a combine harvester with simple Means to be designed so that the given off from the straw separator bene straw quickly and in the desired quality leaves.

According to the invention, the task on a combine harvester with a from a rotating drum with conveyor arranged on the circumference afford and an existing straw separator, the below the straw separation area of a threshing and separation device is arranged transversely to the direction of travel and one, connected to a drive device on both sides of the Straw separator arranged chopping and straw storage device tion, solved in that the chop and straw storage device tion, the outlet openings chopping and straw guide are assigned, arranged circumferentially on the straw separator and via a speed connected to the drive device adjustment device are driven.

The chopper and straw guide device is advantageously made from a chop guide flap, a baffle and a chop straw baffle. The chopper guide flap, the chop straw guide plate and the baffle can be adjusted by adjusting devices designed, the adjustment device for the chop straw baffle formed by a toothed segment combination. The Speed adjustment device consists of two, on which the Ab traction disks for the chop and straw placement device tra the countershafts arranged opposite each other can be engaged by a clutch as required can.  

The invention is intended to be based on an exemplary embodiment are explained in more detail. In the accompanying drawings,

Fig. 1 is a schematic representation of the side view of a combine harvester,

Fig. 2 is a plan view of a section through a side of a Strohseparator and a chaff and straw depositing device,

Fig. 3 is a side view of the sectional view through Fig. 2 and

Fig. 4 is a schematic representation of a drive mechanism for a chopper and straw placement device.

The combine harvester 1 shown in FIG. 1 is designed as a self-propelled combine harvester. A cutting unit 2 is followed by a threshing and separating device 3 and a straw separator 4 .

On both sides of the straw separator 4 there is a chopper and straw placement device 5 on the circumference, the outlet opening 27 of which is assigned a chopper and straw guide device ( 6 , 7 , 8 ).

The chopper and straw guide device essentially consists of a guide plate 6 , a chopper guide flap 7 and a chopper straw guide valve 8 , each of which is assigned an adjusting device. The adjustment device for the chopper guide flap 7 is formed by a swivel device 25 .

The chopping straw guide plate 8 is adjusted by means of a toothed segment combination consisting of a toothed segment 22 , a counterpart 21 , an adjusting lever 24 and a gag for fixing the position.

The chopper and straw placement device 5 is connected to a chopper and straw placement device 12 .

The chopper and straw storage drive 12 is mounted in the machine frame 20 and essentially consists of a drive shaft 30 on which a drive disk straw storage device 31 and a drive disk chopper 32 are arranged.

The drive pulley, straw tray 31 and the drive pulley, chopper 32 are connected to the countershaft, straw tray 34 or to the countershaft, chopper 35 via belt drives.

The drive pulley, chopper 32 also drives the V-belt pulley, separator 37 . Via an adjusting lever 36 , the clutch 33 engages the countershaft 34 or 35 for driving the driven pulley 29 as required.

The driven pulleys 29 drive the chopping and straw depositing devices 5 via V-belt pulleys 28 .

Arranged below the straw separator 4 is a grain spreader conveyor 11 , which guides the grain spreader mixture separated from the threshing and separating device 3 and the straw separator 4 to an upper and a lower cleaning system 10 , 9 .

After separation of the grain spreader mixture by the two cleanings 10 , 9 , the grain is fed to the grain tank via grain elevators 17 .

The operation of the invention is as follows. The crop to be recovered is fed to the threshing and separating device 3 via the cutting unit 2 .

This is where the threshing and the separation of the grains take place for the most part and the straw from the chaff.

The grains and the chaff are fed via the grain chaff conveyor 11 to an upper and lower cleaning system 10 , 9 as already described.

Most of the straw that has been threshed out is fed from the separating area of the threshing and separating device 3 to the straw separator 4 . There is a re-threshing there again.

The final threshing is fed to the grain spreader conveyors 11 via a separating basket 13 .

By means of conveyor bars 15 arranged on the drum 14 of the straw separator 4 , the straw is guided to both sides of the straw separator 4 and transferred to the chopper and straw depositing device 5 by conveyor blades 19 arranged at the ends of the drum 14 , where it is gripped by the chopper knives 16 and each is deposited as straw via the outlet opening 27 or ejected in the chopped state as required.

During the chopping process, the countershaft, chopper 35 takes effect via the clutch 33 .

The counter knives 26 are pivoted into the chopping area.

If the straw is stored, the return flange, straw tray 34 is activated via the clutch 33, so that the chopping blades 16 approach circulate the Strohseparators 5 at the same speed as the drum fourteenth

The counter knives 26 are pivoted out of the effective range of the chopper knives 16 .

The desired placement or ejection direction is determined by the straw and chopper guiding devices 6 , 7 , 8 and de ren adjusting devices 21 to 24 and 25 and 39 .

Reference list

1

Harvester

2nd

Cutting unit

3rd

Threshing and separating device

4th

Straw separator

5

Chopping and straw placement device

6

Baffle

7

Chopper guide flap

8th

Chopping straw guide flap

9

lower cleaning

10th

upper cleaning

11

Grain spreader conveyor

12th

Chopper and straw placement drive

13

Separation basket

14

drum

15

Conveyor bars

16

Chopping knife

17th

Grain elevator

18th

Return elevator

19th

Conveyor bucket

20th

Machine frame

21

Counterpart

22

Tooth segment

23

Gag

24th

Adjustment lever

25th

Swivel device

26

Counter knife

27

Outlet opening

28

V-belt pulley

29

Driven pulley

30th

drive shaft

31

Traction sheave, straw rest

32

Traction sheave, chopper

33

clutch

34

Countershaft, straw tray

35

Countershaft, chopper

36

Adjustment lever

37

V-belt pulley, separator

38

Guide ribs

39

Direction of adjustment, baffle

40

wave

Claims (5)

1. Combine harvester with a straw separator consisting of a rotating drum with conveyor strips arranged on the circumference and a separator basket, which is arranged below the Strohabgabebe rich a threshing and separating device transversely to the direction of travel and one each, connected to a drive device, on both sides of the straw separator arranged chopping and straw placement device, characterized in that the chopping and straw placement devices ( 5 ), from which openings ( 27 ) are assigned to chopping and straw guiding devices ( 6 , 7 , 8 ), arranged circumferentially on the straw separator and via a with the Drive device ( 12 ) connected speed adjustment device ( 33 , 34 , 35 ) are driven. 2. Combine harvester according to claim 1, characterized in that the chaff and straw guide device consists of a chopper guide flap ( 7 ), a guide plate ( 6 ) and a chopper straw guide plate ( 8 ). 3. Combine harvester according to claim 2, characterized in that the chopper guide flap ( 7 ), the chopper straw guide plate ( 8 ) and the guide plate ( 6 ) are adjustable by adjusting devices ( 21 , 22 , 23 , 24 , 25 ). 4. Combine harvester according to claim 3, characterized in that the adjusting device for the chaff straw guide plate ( 8 ) is formed by a toothed segment combination ( 21 , 22 , 23 , 24 ). 5. Combine harvester according to claim 1, characterized in that the speed adjustment device from two, on which the drive disks ( 29 ) for the chopping and straw depositing device ( 5 ) bearing shaft ( 40 ) arranged countershaft discs ( 34 , 35 ), which alternate through the clutch ( 33 ) can be brought to a hand, there is.