Harvesters – Cornstalk type – Pickers or huskers
Patent
1995-04-24
1998-08-04
Carone, Michael J.
Harvesters
Cornstalk type
Pickers or huskers
2412601, 460 31, A01D 4502
Patent
active
057876967
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a picking attachment for a harvester according to the preamble of the main claim.
BACKGROUND OF THE INVENTION
A harvester of the relevant generic type is described in EP 91 635 BI. The essential feature of this harvester is to be seen in the fact that the actual picking attachment has pull-in rotors which are associated with stationary cutters which project into corresponding slits in the blades of the pull-in rotors and thereby effect comminution of the plant. The cutters are here for example arranged at the bottom end of a respective partial covering allocated to each pull-in rotor, while, since the entire picking attachment is inclined forwards, the plant is gripped by means of the pull-in rotors and pulled down through the picking gap, comminution of the plant also being effected by the stationary comminuting cutters due to the pulling-down operation. This known device has given excellent results in practice. In particular, it is an advantage that the stalks are cut at an oblique angle to the longitudinal axis by the pulling-down operation, so that a large rotting surface is thereby made available, which leads to rapid rotting of the chopped stalk material.
With this arrangement the plant stalks are thus fed onto the stationary cutters and compressed, for which relatively great forces are necessary.
From EP-474 072 an attachment for a harvester-thresher or a harvester of similar configuration has become known, in which the cutting device consists of two oppositely rotatable shafts which are arranged at a distance from one another and on which at least one cutting disk and, adjoining the cutting disc, a star element are arranged. The cutting edges of the cooperating cutting disks are arranged to overlap one another. In this known arrangement two pull-in rotors are thus indispensable and the cutting disks are arranged on these pull-in rotors.
Together with the gripping of the plant stalks, in the known arrangement the latter are also cut through, so that the plant stalks are cut off far too soon, that is to say at a moment when the pull-in rotors have not yet by any means securely gripped the plant stalk, so that the entire plant stalk can pass into the thresher together with the corncob, which here must lead to considerable malfunctioning.
Owing to the fact that the cutting disks overlap and are in contact with one another, very heavy wear occurs on the cutting disks, and the energy requirement of this known arrangement is greater than in the case of the prior art machine according to EP 91 635 BI.
The arrangement known from EP 474 072 always requires two pull-in rotors, and therefore cannot be used in conjunction with a partial covering or a mating rotor.
SUMMARY OF THE INVENTION
The object on which the invention is based is that of reducing the expenditure of force in comparison with the known machines, and of additionally ensuring that the plant stalks are securely gripped by the pull-in rotor or rotors before cutting is effected, so that only the ears of the corn or other harvested plants, broken off at the picking gap, thus reach the thresher.
This object underlying the invention is achieved through the doctrine of the main claim.
Advantageous developments are explained in the sub-claims.
Expressed in other words, it is proposed to replace the stationary cutters according to EP 91 635 with rotating cutting disks, so that the cut made by the cutters in the stalk region is not a pushing but a pulling cut, so that the expenditure of force is greatly reduced. In addition, it is proposed according to the invention that the cutting disks form their own cutting roller, that is to say are not combined with one or the other pull-in rotor and--a very essential point--that the axis of the carrier shaft of this cutting roller, viewed from the picking gap, is situated lower than the axis of the pull-in rotor, so that it is thereby ensured that the plant stalks are securely gripped by the pull-in rotor or rotors before the cut is made, so that even after the
REFERENCES:
patent: 1894412 (1933-01-01), Neighbour
patent: 2613490 (1952-10-01), Karlsson
patent: 2821058 (1958-01-01), Jones
patent: 3069832 (1962-12-01), Baker
patent: 3075340 (1963-01-01), Raney et al.
patent: 3091070 (1963-05-01), Wilkins et al.
patent: 3100491 (1963-08-01), Dillon
patent: 4284247 (1981-08-01), Eriksson
patent: 4732336 (1988-03-01), Eriksson
patent: 5009061 (1991-04-01), Hewling
patent: 5404699 (1995-04-01), Christensen et al.
Krassort Georg
Wiegert Ludger
Carl Geringhoff GmbH & Co. KG
Carone Michael J.
Pezzuto Robert
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