DE19548627C2 - Straw collectors for combine harvesters - Google Patents

Description

The invention relates to a straw collector for mowing thresher according to claim 1. This has rigid and movable outer boundary parts and is arranged in the delivery area of the straw. He collects the straw temporarily after the threshing and separating process and emptied when a certain filling level is reached, with the straw in a pile on the field floor is filed.

Straw collectors are already known in various designs. For example, in US 3941420 and US 3,599,844 arranged below the straw discharge of a combine Collection devices shown, in which the straw on a swiveling bottom flap falls and there until you reach one certain straw volume is collected. Is that available standing collecting space completely filled, so the bottom flap swung down and the straw was released onto the field floor. Due to the limited space available, only a small amount of straw can be taken up by these collectors. The SU 880316 is also a straw collector for a combine known with a rear flap and a floor part is equipped, both articulated with each other are connected. The rear swivels during the emptying process Fold up and the bottom part down. For improvement the straw shelf when opening is the bottom with a slide provided that directly at one end with a hinge connected to the floor and rod-shaped on the other side Fingers are arranged.

This version allows a large volume of the Straw collector, however, requires a lot of production and has a complicated emptying device. Furthermore, a straw collector is described in DD 248 719 A1, whose rear boundary forms a rear flap that is arranged between the two side walls. The back wall flap is designed and opened as a two-leaf conveyor element a horizontally mounted shaft rotatable by 180 °. The turning circle diameter of the rear flap extends about the entire height of the straw collector. When filled The straw collector turns the straw backwards by rotating it funded from the collector.  

The disadvantage of this design is that it wears out stored straw in a long swath and thereby the straw salvage is made more difficult and complex.

The invention is based, so the straw collector the task execute that entire straw volume within a short Time can be stored in a spatially concentrated form on the field floor is.

According to the invention, the task of a straw collector for mowing thresher solved with the features of claim 1.

The design of the straw collector according to the invention enables fast emptying and a concentrated pile of straw on the field floor.

Through this form of storage, the straw salvage is essentially united cleverly and effectively designed.

According to advantageous embodiments of the invention, the individual Flap parts have an approximately angular cross-section. The Flap parts have openings in the side areas. The lower and rear area is formed over the entire surface. The two flap parts are on the mutual center able to be locked together via a detachable closure. At the rear upper section of the straw collector is an adjustable one electrical contact switch arranged. In the back a hood has a support frame arranged on its two hydraulic cylinders are attached to the outer sides, at their free Ends of the piston rod bolts are attached on both sides arranged in elongated slots on the flap parts Guide are slidably arranged.

Rigidly connected between the bolts and those with the flap parts which brackets are arranged tension springs. With one on one Piston rod-attached bolt is connected to a pull rope that with the closure for the two flap parts in connection stands.  

On the underside of the rear wall are guides and stops for the flap parts arranged.

The invention is illustrated below using an exemplary embodiment explained in more detail. In the accompanying drawing:

Fig. 1 is a side view of the straw collector in the closed state,

Fig. 2 shows the view A of FIG. 1,

Fig. 3 is a rear view of the straw collector in the closed state just before the unlocking of the two flap parts,

Fig. 4 shows the rear view of the straw collector in the open state.

A straw collector 2 is arranged on the machine frame 1 of a combine harvester, not shown. This consists in wesent union of a rigid hood 4 arranged above the end region of the straw walker 3 and two flap parts 5 , 6 running below this in the direction of travel F, which can be pivoted laterally outwards via hydraulic and mechanical actuating elements. By pivoting the two flaps parts 5 , 6 , the straw collector 2 is emptied down. In the unte ren area of the hood 4 open to the rear, an approximately horizontally arranged profile frame 7 is attached, which projects beyond the rear end of the hood 4 . The flap parts 5 , 6 are fastened to joints 8 , 9 on both sides of the profile frame 7 . The individual flap parts 5 , 6 have an approximately angular cross section. At the lateral areas of the flap parts 5 , 6 approximately vertically extending round rods 10 are arranged at intervals. The lower and rear area is formed over the entire surface. On the central system running in the direction of travel F, the two flap parts 5 , 6 are locked together by a spring-loaded closure 11 .

In the rear area of the hood 4 , a support frame 12 is arranged for stabilization. Between the support frame 12 and the profile frame 7 , several obliquely attached collecting tubes 13 are arranged for the rear limitation of the straw collecting space. At the rear upper area of the straw collector 2 , an electrical contact switch 14 is attached, which protrudes into the interior of the straw collector 2 and which is arranged adjustable in depth both in height and in penetration.

The contact switch 14 actuates an optical or acoustic display device arranged on the driver's station, which indicates the filling state of the straw collector 2 .

Hydraulic cylinders 17 , 18 are fastened to holding arms 15 , 16 on both outer sides of the support frame 12 . At the free end of the piston rods 19 , 20 of the hydraulic cylinders 17 , 18 , bolts 21 , 22 are fastened, which slide on both sides in slot holes 23 , 24 of a guide 25 , 26 arranged on the flap parts 5 , 6 . Tension springs 27 , 28 are attached to both ends of the bolts 21 , 22 . The other ends of the tension springs 27 , 28 are hung on stanchions 29 , 30 , which are firmly connected to the flap parts 5 , 6 . On a flap part 5 , a pull cable 31 is connected to the bolt 21 , which is connected via guide elements 32 to the circuit 11 for the two flap parts 5 , 6 . When the amount of straw in the straw collector 2 has reached the final filling level, this state is signaled to the combine driver via the contact switch 14 . By actuating a hydraulic directional control valve, the piston rods 19 , 20 of the hydraulic cylinders 17 , 18 are retracted. As a result, the bolts 21 , 22 are pulled upward within the elongated slot slots 23 , 24 and thereby tension the tension springs 27 , 28 . Shortly before reaching the upper end position, the traction cable 31 connected to the bolt 21 tightens and releases the locking hook 33 from the counter-holder 34 , whereby the connection of the two flap parts 5 , 6 is broken. The two tension springs 27 , 28 then suddenly pull the flap parts 5 , 6 upwards.

Through the opening created, the straw is stacked on the field floor. After emptying the straw collector 2 , the piston rods 19 , 20 of the hydraulic cylinders 17 , 18 are extended and thereby the flap parts 5 , 6 are reconnected and locked by the closure 11 .

To secure the position of the flap parts 5 , 6 in the closed state, 35 guides 36 , 37 and stops 38 , 39 are arranged on the underside of the fixed rear wall.

Reference list

1

Machine frame

2nd

Straw collector

3rd

Straw walkers

4th

Hood

5

,

6

Flap parts

7

Profile frame

8th

,

9

Joints

10th

Round bars

11

Closure

12th

Support frame

13

Collecting tubes

14

Contact switch

15

,

16

Holding arms

17th

,

18th

Hydraulic cylinder

19th

,

20th

Piston rods

21

,

22

bolt

23

,

24th

Slotted slots

25th

,

26

guides

27

,

28

Tension springs

29

,

30th

Mounts

31

Traction rope

32

Guide elements

33

Locking hook

34

Counterhold

35

Back wall

36

,

37

guides

38

,

39

attacks
F Direction of travel

Claims (9)

1. straw collector for combine harvesters with an existing in the upper area of rigid outer boundary parts and in the lower area of pivotable flap parts Ummante treatment, the straw collector is directly in the delivery area of the straw releasably connected to the machine frame of the combine, characterized in that the Sheath-forming rigid boundary parts ( 4 , 12 , 13 ) and the pivotable flap parts ( 5 , 6 ) with the machine frame ( 1 ) of the combine harvester releasably associated profile frame ( 7 ) and that the flap parts ( 5 , 6 ) with the profile frame are connected in the direction of travel (F) so that they can be pivoted laterally outwards via hydraulic and mechanical actuating elements ( 17 to 30 ). 2. Straw collector according to claim 1, characterized in that the individual flap parts ( 5 , 6 ) have an approximately angular cross-section. 3. Straw collector according to claim 1 and 2, characterized in that the flap parts ( 5 , 6 ) have openings in the lateral areas and the lower and rear area is formed over the entire surface. 4. Straw collector according to claim 1 to 3, characterized in that the two flap parts ( 5 , 6 ) on the mutual central contact via a releasable closure ( 11 ) can be locked mitein other. 5. Straw collector according to claim 1, characterized in that an adjustable bar electrical contact switch ( 14 ) is arranged at the rear upper region of the straw collector ( 2 ). 6. Straw collector according to claim 1, characterized in that in the rear region of a hood ( 4 ) a support frame ( 12 ) is arranged, on its two outer sides hydraulic cylinders ( 17 , 18 ) are attached, at the free ends of the piston rods ( 19th , 20 ) Bolts ( 21 , 22 ) are fastened, which are slidably arranged on both sides in slot holes ( 23 , 24 ) of a guide ( 25 , 26 ) arranged on the flap parts ( 5 , 6 ). 7. straw collector according to claim 1 and 6, characterized in that between the bolts ( 21 , 22 ) and the parts with the flaps ( 5 , 6 ) connected brackets ( 29 , 30 ) tension springs ( 27 , 28 ) are arranged. 8. straw collector according to claim 1, 4, 6 and 7, characterized in that with the bolt ( 21 ) a pull rope ( 31 ) is the verbun, which is connected to the closure ( 11 ). 9. Straw collector according to claim 1 to 4, characterized in that on the underside of the rear wall ( 35 ) guides ( 36 , 37 ) and stops ( 38 , 39 ) for the flap parts ( 5 , 6 ) are arranged.