DE3100239A1 - HARVESTING MACHINE FOR HARVESTING LONG-TERM YIELDS, LIKE MAIS - Google Patents

Description

PATENT LAWYERS

DIPL.-INQ. R. SPLANEMANN dipl-chem. dr. B. REITZNER

ZUQEL. REPRESENTATIVE AT THE EPO ■ PROFESSIONAL REPRESENTATIVES BEFORE EPO ■ MAND'ATAIRES AGREES PRES LOEB

Maskinfabriken Taarup A / S eooo munchen 2 7th Jan. 1981

Ta113

TW- ^ nn K "iar> + PrrnnriP Telephone (089) 220207/224209

DK-rODU KerXemmae telegrams: Inventiu «monks Denmark τ. ^ ,, ₅ 2β4ΐβ ^ .α

UnMnAkI., 3340-1-11.182

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Patent application

Harvester for harvesting long-stemmed crops such as corn

130049/0512

Accounts: Deutsche Bank AG, Munich, KoMo-Nr. 2014 009 Postschick 1 Munich 600 60-807

The invention relates to a harvesting machine for harvesting long-stemmed crops such as corn, with in the direction of travel forward-protruding guide organs for the fruit, whereby at the rear end of the guide organs two cooperating, driven driving drums rotatable in opposite directions of rotation about preferably vertical axes are provided, both of which carry a cutter disc coaxial with the drum at the lower end, which the the knife disc attached to the other drive drum overlaps and serves as a counter blade for this, and with one enclosed in a fan housing behind the driver drums, seen in the direction of travel Ejection unit is provided, which comprises a rotatable in a vertical plane, driven wing knife set.

It has been found that it is difficult with known harvesting machines of this type, together with the To cut corn stalks, especially long and tough weeds, so that clogging does not occur.

The tough weeds are pulled out into long threads that penetrate outward over edges and at those places be wound around rotating parts, where an effective mechanically controlled conveyance of the yield does not take place. This clogging thus occurs in particular where cut or partially cut material is to be fed from one function of the machine to another function, that is to say in particular between the drive drums with their knife discs and the Fan housing with the ejection unit.

The aim of the invention is to create a harvesting machine of the type mentioned, in which there is a tendency towards clogging is reduced without thereby increasing the loss of yield and thus impairing the efficiency of the harvest. This is achieved according to the invention in that the rear intersection point of the circumference of the cutter disks

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immediately at or behind the front fan housing duct lies.

Tests have shown that the embodiment of the harvesting machine characterized in claim 2 is particularly has good properties by not being able to do so because of the specified arrangement of the cutter disks Material stagnation tends to occur, whereby the upper cutter disc also serves to reduce the amount of yield lost to one very small diminish value because of this knife disc contributes to the closure of the opening formed by the cutout in the bottom of the fan housing.

A substantially circular upper cutter disk according to claim 3 is for locking the cutout Particularly suitable in the bottom of the fan housing, while the lower knife disc is wavy or serrated Has cutting edge that contributes to effective harvesting without deviating from the circular shape The perimeter of the lower cutter disc entails material losses, as this perimeter is below the bottom of the Fan housing is.

The invention is explained in more detail below with reference to the drawing. Show it

1 shows, in perspective and front view, parts of the harvesting machine according to the invention, and 2 shows the same harvesting machine in a top view and partially in section.

The harvesting machine shown in the drawing has guide elements 1, 2, which show the yield to be harvested inside and feed it to an ejector unit 3. The ejection unit has one in the area of the gap between the guide members 1,2 located opening and is with a rotating in the vertical plane Wing knife set 5 provided. The knife set is on one

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'- ■ 3100238

driven shaft 6 and works against a fixed shearbar 7 · Both the wing knife set 5 like the shear bar 7 are enclosed in a fan housing 8, the top with an ejector for the harvested and chopped yield is developed. Two carrier drums mounted on both sides of the opening 4 9 and 10 with a vertical axis are in opposition by means of a drive device (not shown) The direction of rotation rotates so that the crop yield is guided into the ejection unit 3 by the guide elements 1, 2. The driver drums 9 and 10 both wear on their lower end of a coaxial with the drum concerned knife disc 11 or 12, which is partially cover and serve as a shearbar for the knife disc attached to the other drive drum. The lower cutter disc 12 is located under the bottom of the fan housing 8, while the upper cutter disc partly under the fan housing base and partly above this by passing through a cutout 13 in the housing base.

The yield is cut off by the cutter disks 11, 12 at their front intersection point 14.

The rear intersection point 15 of the cutter disks is located directly at or behind the front edge 16 of the Fan housing 8.

The upper cutter disk 11 is essentially circular, so that its slightly undulating or serrated The cut is so close to the cutout 13 that significant material losses are avoided. The other Knife disc 12 has a wavy or serrated knife edge, as the deviation of this Schneiderform of the circular shape is irrelevant in terms of material loss.

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The section shown in the drawing can also consist of a columnar part and one with this in Connected cranked part exist. The rectilinear part of the cutout can, for example, have a gap shape have, while the curved part of the cutout can be designed as a crank, the cutout corresponding part of the blower housing bottom is under the knife disc 11.

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Claims (3)

P a t_e_n tans p__r Ü c h_e: ML} harvester for harvesting long-stemmed crops such as Maize, with guiding organs for the fruit protruding forward in the direction of travel, with the guiding organs at the rear end two cooperating driven, preferably rotatable about vertical axes in opposite directions of rotation Driver drums are provided, both of which at their lower end carry a knife disc coaxial with the drum, which the one on the other carrier drum Fastened knife disc overlaps and serves as a shearbar for this, and wherein in the direction of travel seen behind the driver drums, an ejector unit enclosed in a fan housing is provided, which comprises a driven set of vane blades rotatable in a vertical plane, characterized by g e k e η η, that the rear intersection point of the perimeter of the cutter disks is immediately at or behind the front edge of the fan housing. 2. Harvesting machine according to claim 1, characterized in that that the part of the The lower cutter disc is located under the bottom of the fan housing, while the corresponding part of the upper cutter disc partially under the bottom of the fan housing and partially passes through a cutout in the housing bottom and lies above the case back. 3. Harvesting machine according to claim 2, characterized in that that the upper cutter disk is essentially circular, while the lower cutter disk has a wavy or serrated cutting edge. 130049/0512