DE3302980A1 - Field chopper - Google Patents

Abstract

The present invention relates to a field chopper which has, in addition to a chopping drum, a further post-comminution and acceleration device for the chopped material. The post-comminution and acceleration device is a single functional and assembly unit and consists of two rollers of profiled surface which are drivable in opposite directions and at different circumferential speeds. Considerable constructional space is thus saved in this way by the use of a single constructional unit serving both for post-comminution and for acceleration.

Description

Forage harvester

The invention relates to a forage harvester isch the preamble of the main claim.

A corn harvester is known from German Offenlegungsschrift 21 22 105, which has a de-fleece device following the picking device. Included is the front side of the Entliescheinrichtung ■ at one end of a transverse to the direction of travel the corn harvesting device running as a carrier tube connected. In this tube there is a screw conveyor running in the longitudinal direction of the tube Perimeter for pre-cutting the corn cobs is partially toothed, arranged which the harvested material of a fine shredding device with an assigned ejection impeller which is attached to the opposite end of the tube from the Entliescheinrichtung. With a, Such a corn harvester it is possible to shred the stripped and pre-cut corn cobs so that both the individual corn kernels as well as the one can also be considered as a nutrient carrier The coming stalk of the corn cob for the production of fodder is not lost walk. The main disadvantage of devices constructed in this way, however, is due to the arrangement of fine

downsizing · and ejector impeller in the bulky and wide construction, which for reasons of stability alone require a high amount of material requires. Another disadvantage is that such corn harvesters cannot be used for other types of fruit that are only chopped, but should not be finely comminuted afterwards.

The present invention is based on a forage harvester of the type specified in the introduction The invention is based on the problem of designing a forage harvester in such a way that a narrow, compact structural unit is produced, the harsh working conditions in agriculture in a satisfactory manner has grown. This is achieved by the fact that the additional. Conditioning device in a functional unit as a device performing post-accelerator function formed and preferably arranged in the end area of the discharge chute is. The comminution and post-accelerator device is simple composed of two co-operating profiled rollers that can be driven in opposite directions. In order to prevent stones conveyed along with the goods from damaging the rollers at least one of them arranged to be deflected against spring force transversely to the conveying direction. Should be chopped grass instead of grain

... Il

re-shredding is not required. To the forage harvester according to the invention To be able to switch to this type of chop is at least one of the profiled rollers against only the promotion Serving roller exchangeable. It is recommended to use both the profiled nip roller as well as to drive the conveyor roller. This means that the drive power is essential less than if only the conveyor roller were driven, and the grass over a fixed one Counter position would have to be brought. To get a forage harvester as fast as possible, for example To be able to switch from grain to grass, one of the two profiled squeeze rollers can be swiveled on the canal wall attached, whereby in the swiveled-out position this pinch roller is also one with the channel wall connected conveyor roller is pivotable in the working position. Around the safe supply of the goods to the drivable profiled squeeze rollers in particular Then ensure when the speed of the chopper drops, is after another Feature of the invention the counter-drivable profiled rollers at least upstream of a conveyor roller. This creates a risk when the chopper speed is low the bridging and thus the risk of complete blockage of the channel is avoided. It appears useful if at least one of the profiled

Pinch rollers are occupied with additional conveyor elements that engage in corresponding recesses of the counter roller. In the event that a chopper does not have to be switched from grain to grass too often, it is advisable to design one of the profiled squeeze rollers as a conveyor roller, with surface-profiled segments being used between the conveyor strips of the conveyor roller. The advantage over a device in which one of the two squeeze rollers can be pivoted away and instead a conveyor roller can be pivoted in is that, depending on the type and nature of the grain material to be re-crushed, segments with different surface profiles can be used. In order to avoid the installation and removal of segments, however, it is possible in a structurally simple manner that the individual segments can be brought into an operating position and a rest position if necessary, for example by means of adjusting arms. In order to avoid a build-up of air in front of the squeeze rollers during the chopping process, the channel has air slots in the area in front of the rollers. Instead, it is also possible for at least one roller to be surrounded in its ineffective outer area by an air duct which connects the duct part located in front of the rollers with that located behind the rollers. A further development of the invention also provides that at least one roller has a duct which conducts the air in front of the rollers to the outside

assigned. By the proposed measure that the rollers with different Speeds can be driven, the aim is to achieve that the grains are better ground will. In a further embodiment of the Squeeze and conveyor rollers are proposed, these roughly tooth-shaped in their cross-section (involute toothing) to train. In this version it is for the purpose of noise reduction advantageous to manufacture the rollers from polyamide or at least to coat them with it.

In the following, the invention is based on an exemplary embodiment and several of these schematically depicting figures are explained in more detail. It shows:

Figure 1 a forage harvester in the Seitenansiht,

Figure 2 shows the forage harvester shown in Figure 1 in front view with a view on the cutterhead and

Figures different training of the chopper

^ in the area of the further shredding device and the post accelerator.

1 with a self-propelled forage harvester is referred to, the front intake organs 2 of which are harvested from a chopping drum equipped with knives 3 4 feed, which cooperates with a fixed counter knife 5. Got from there the chopped material in an ejection chute 6, in which it is also crushed and accelerated. The shaft 6 closes by means of

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a turntable 7 an ejection chute 8, through which the chopped material is conveyed to an accompanying vehicle, for example. As the Figure 3 now shows, there is the device for comminuting and accelerating the Chopped goods. From two profiled rollers and 10, which are driven in opposite directions. The one transported in the direction of the arrow A. Chopped material arrives between the two rollers 9 and 10, in particular the grains still in the chopped material being crushed. This process can be supported by the fact that the two rollers 9 and 10 with different peripheral speeds are driven. In addition to shredding the latter also serve the purpose of accelerating the shredded chopped material so that that it will be ejected with certainty. To avoid that, for example Damage to the rollers 9 and 10 occurs due to stones present in the material, at least one of them can be avoided arranged, which is indicated by the two elongated holes 11 and 12. Should now take place Whole grain grass is chopped up is not shredding, it is speeding up but probably necessary. As the figure shows, the roller 9 'is then folded away and instead the roller 13, which is only used for conveyance, is in the operating position panned. By the roller 10 'and the roller 13, which are both driven, the chopped material is then accelerated without crushing it.

smaller. In such a case, no air can accumulate in front of the rollers 10 ¹ and 13, as can happen in the exemplary embodiment according to FIG. In order to prevent this, examples are shown in FIG. 5, which can be used on their own, but also in combination. First of all, in front of the rollers 14, 15, the walls 16 and 17 of the channel 6 can be provided with air slots 18 through which air can escape. One more way. To avoid air congestion, as the upper left half of FIG. It is also possible, for example, in front of the roller 15 to provide a channel 20 leading to the outside. Apart from these three possibilities for avoiding an air jam, it can be seen from FIG. 5 that the roller 15 is equipped with conveying elements 21 which support the conveyance and engage in corresponding recesses 22 of the roller 14 when the rollers 14 and 15 are synchronized.

In Figure 4, the possibility is disclosed to pivot a nip roller 9 'and a Swing in conveyor roller 13. As FIGS. 6 and 7 ″ show, at this point can also be worked with only one conveyor roller 23 or 24, between the conveyor strips 25 for the purpose of re-shredding surface, profiled segments 26 are used (Figure 7). Instead of the permanently installed

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Segments 26 can between the conveyor strips 27 (Figure 6) but also pinch, segments 28 to be held on the handlebar 29, around the point 30 by a corresponding Control movement of the link 29 can be pivoted into the inoperative position shown with dashed lines.

In FIG. 3, for example, one is arranged in front of the profiled rollers 9 and 10 Conveyor roller 31 is provided, whereby the chopped material for better and safer feeding of the rollers 9 and 10 is accelerated. Such an acceleration is necessary when the speed of the chopper drops, because otherwise the material could clog the shaft 6 completely.

1. Forage harvester

2. Collection organs

3rd knife

4. Cutter drum

5. Counter knife

6. Ejection chute

7. Slewing ring

8. discharge spout

9. Profiled rollers 9 'roller

10. "" 10 '"

11. elongated holes,

13th roller

14. Roller

15. Roller

16. Roller

17. Roller

18. Louvres

19. Air duct

20th channel

21. Funding elements

22. Recesses

23. Conveyor roller

24. Conveyor roller

25. Conveyor bars

26. Segments

27. Conveyor bars

28. Crush segment

29. Handlebars

30th point

31. Conveyor roller

Claims (16)

^ -llen. January 28th Pat. 346Ό St / Ry - CLAAS- O H G, 4834 Harsewinkel - ■ it;. . Claims · ?; - .) -Forage harvester- mit- exner. ? at - its - front end S provided approval device, an adjoining chopping unit with this downstream device; he: ch% of "a * _S," chopped by means of a device for """""post-acceleration ejected ■ -is,"dadurchge; ke η η z? I et η that the additional Feinzerkleizierungs- or ^v KbnditionTer adjustin chtüHg - "■ 'in"''FJunk-bi ^: onseinheit (9, 10, 14, -15) as neighbor ^ chi ^ uÄiger functions exerting' Einri chtune ^ aliisöeb ^ Me ^ uiid? Pre-exercising preferably, im 6. Arranged 1 st. & -, ^&,: Λ 2.) Forage harvester according to ίύαΒτρ ^ ζ ^ / ί ^ '^^ "^^ - , because you -r -'- ch ^ ge ^ lflÄ ¹ ^^ et that the device (9 "'. 10, 14, 15) acting as a crushing and post-firing device consists of two cooperating: oppositely drivable! / rollers (9 lind 10, 9 * and 1p ¹ , 14 and "T5J) _ exist. 3.) Forage harvester according to, claims 1 and 2, d ad urchgeke 'η -n - Z / e = |': ch η et that at least; one of the rollers ¹ £ "9 and" 10) can be detached against spring force across the conveying direction. '.' ■ - ". '■ -. 4.) Field chopper according to claims 1-3, characterized, that at least one of the profiled rollers (9 ') against only one of the promotion serving roller (13) is replaceable. 5.) Forage harvester according to claim 4, characterized in that both the profiled squeeze roller (10 ^T ) and the conveyor roller (13) can be driven. 6.) Forage harvester according to Claims 4 and 5, characterized in that that one of the profiled squeeze rollers (9 ') is pivotably attached to the duct wall is and that when the squeegee roller (9 ') is in the swiveled-out position, one is also with the conveyor roller (13) connected to the duct wall can be pivoted into the working position. 7.) Forage harvester according to claims 1-6, characterized in that that the profiled rollers (9, 10) which can be driven in opposite directions have at least one conveyor roller (31) is upstream. 8.) Forage harvester according to claims 1-7, characterized thereby eic hnet, that at least one of the profiled rollers (15) with additional conveyor elements (21) is occupied, which engage in corresponding recesses (22) of the counter roller (14). 9.) Forage harvester according to claims 1 - 8, characterized by geke η η, that one of the profiled rollers (23 "or 24) is designed as a conveyor roller, with between the conveyor strips (25 or 27) surface-profiled segments (26) can be used. 10.) Forage harvester according to claim 9, characterized in that that the individual segments (28), for example by means of adjusting links (29), if necessary can be brought into an operating position and a rest position. 11.) Forage harvester according to claims 1 - 10, characterized thereby gekennzeic hnet, that the channel (6) has air slots (18) in the area in front of the rollers (14, 15). 12.) Forage harvester according to claims 1 - 10 ", characterized in that that at least one roller (14) in its ineffective outer area of an air duct (19) is surrounded by the channel part located in front of the rollers (14, 15) the one behind the rollers. 13.) Forage harvester according to claims 1-10, thereby geken η 2 e i c h η e t, that at least one roller (15) an air located in front of the rollers (14, 15) after externally conductive channel (20) is assigned. 14.) Forage harvester according to claims 1-13, characterized t, that the rollers (9, 10; 31, 32) with different Speeds are drivable. 15.) Forage harvester according to claims 1 - 14, characterized in that that the rollers (9, 10; 9 ', 10'; 14, 15; 31) with interlocking involute teeth are preferably provided with eight teeth per roller. 16.) Forage harvester according to claims 1-15, characterized in that that the rollers are made of polyamide.