DE1246302B - Maize harvester - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

AOld

German class: 45 c 45/02

Number: 1246 302

File number: R 20709 III / 45 c

Filing date: March 8, 1961

Opened on: August 3, 1967

The invention relates to a harvesting machine for maize with at least two variable spacing Picking.

Maize is grown in parallel rows evenly spaced, this spacing depends on the area of the earth, the nature of the soil and the altitude. Because of this, machines are with several fixed pickers disadvantageous or uneconomical, especially since there are standards for there is no distance between the pickers. These machines with fixed pickers can can therefore only be used for certain uniform growing conditions.

Harvesting machines with only one picker are also known Let the row spacing of the maize plants be used, but their performance is inadequate.

The pickers usually consist of two cooperating picking rollers that in one that rises from the front to the rear, possibly sloping laterally to the floor surface Level. These rollers are provided with interlocking longitudinal ribs and are rotated in opposite directions. There are also at least two chains which extend in a parallel to the axis plane of the rollers and above this plane Located level and are arranged such that the working strand is above the associated Roller is located. The chains carry outwardly directed lateral ones at appropriately chosen intervals Finger. The movement is such that the fingers of the working strand move backwards.

A harvesting machine is also known in which a central divider is fixedly arranged. At The FahrgesteU are still two perpendicular to the side of the central divider at the same distance Axes provided to the. a further divider is pivotably arranged in each case. Of further are the dividers with each other by a relatively cumbersome adjustment device linked together, by which the distance between the two outer dividers with respect to the central one Divider can only be adjusted at the same time. The device is cumbersome and therefore expensive Construction and has the further disadvantage that the dividers are not independent of each other accordingly can be adjusted in a simple manner to the respective prevailing conditions.

The invention has set itself the task of eliminating the disadvantages of the known harvesting machines to eliminate and in particular a harvester for corn

Applicant:

Etablissements Braud, Societe Anonyme,
Saint-Mars-Ia-Jaille, Loire-Atlantique
(France)

Representative:

Dr. rer. pole. Dr.-Ing. KF Möllering,
Patent attorney, Lübeck, Elsässer Str. 31

Named as inventor:
Alexandre Braud,

Saint-Mars-Ia-Jaille, Loire-Atlantique
(France)

Claimed priority:

France June 24, 1960 (831006)

To create harvesting machines that can be used for all possible row spacings of the maize plants can, whereby the machine can also be adapted to the respective requirements by inexperienced operating personnel can be admitted.

The invention relates to a harvesting machine for maize with at least two variable spacing Picking. The invention consists in that the rear end of each picker by means of an as Slideway trained mounting bracket on a horizontal, a front cross member of the FahrgesteUes bUdenden and serving as a guide rail hollow body of rectangular cross-section is stored and lockable by means of a clamping device. The invention results in the Advantage that the harvesting machine can be easily accessed by inexperienced operators Row spacing can be admitted. The machine is simple in construction and robust and resilient.

Further details of the invention are given below with reference to the drawing of an embodiment the harvesting machine according to the invention for corn described in more detail. It shows

Fig. 1 is a plan view,

F i g. 2 shows a side view with the attachment of the movable picker;

709 619/136

Claims (1)

Fig. 3 shows, on a larger scale, the type of attachment of the movable picker; F i g. 4 is a section along the line IV-IV of FIG. 3. The harvesting machine for corn, which is arranged for example at the front end of a grain mower and threshing machine, of which only the two front wheels are shown, consists in the usual way of two pickers with one roller 1 each. The two rollers are opposed to one another by suitable means set in rotation and are provided with interlocking longitudinal ribs 2 . On both sides of the rollers, two chains 3 are arranged parallel to their axes and in a higher plane, and they carry fingers 4 at suitable intervals. The chains are driven in the usual way, namely in such a way that the fingers 4 move above the rollers 1 towards the rear. According to the invention, at least one of the pickers can move laterally. For this purpose, the front cross bars of the machine frame are formed by horizontal hollow bodies 5 of square cross-section, which can serve as a sliding guide for the movable picker. The rear end of the movable picker is mounted on these cross bars by means of a bracket 6 and is locked in the desired position by a clamping plate 7 and threaded nuts 8. In order to prevent the corn cobs from being torn off their stalks and being crushed by the rollers 2 , a protective bar 9 is arranged above each roller. The two rods can be adjusted sideways so that their spacing can be changed according to the thickness of the corn cobs. For this purpose, the rear end of each rod is extended by a lateral extension 10 which is provided with a sliding guide 11. A finger 12 attached to the picking frame engages in this. A threaded nut 13 sits on the free end of the finger, through which each rod can be locked in the desired position. Each picker is located in a protective housing 14 which ends in two vertically movable beaks 15 at the front. This brings the lower parts of the stalks into the work area of the pickers. Above the upper part of each roller there is arranged a circular knife 17 rotating in a horizontal plane, which is set in rotation by suitable means in such a way that the two knives of each picker rotate in opposite directions to each other. The operation of the machine is as follows: The position of the movable picker is initially set depending on the distance between the rows of maize plants. To do this, it is sufficient to loosen the threaded nuts 6 and move the picker on the cross bars 5 . Then the distance between the protective bars 9 is adjusted by means of the guides 11 and the fingers 12 according to the thickness of the corn cobs to be picked. While the machine is working, the stalks of each row of plants are brought into the working area of the rollers 2 by the beaks 15 , which rotate opposite to one another and thereby pull the stalks downwards, while the fingers 4 of the chains 3 fold them backwards. As soon as the corncobs come into contact with the rods 9 , they are held by them and separated from the stalks that are pulled down. The ears of corn are then grasped by the fingers 4 and slide on the rods 9 in the direction of the collector arranged behind the pickers. From there they are transferred to the work table or ■ the threshing machine. The corncobs run no risk of being crushed between the rollers. Obviously, numerous changes can be made without departing from the spirit of the invention. The movable picker can be stored on the machine frame by other means. If necessary, a device can also be provided which allows the distance between the two pickers to be adjusted mechanically. A strut 16 can be provided to stiffen the pickers. Claim: Harvesting machine for maize with at least two variable distance pickers, characterized in that the rear end of each picker is supported by means of a mounting bracket (6) designed as a sliding guide on a horizontal hollow body of rectangular cross-section (5) which forms a front cross member of the chassis and serves as a guide rail and is supported by means of a clamping device (7) can be determined. Considered publications:
U.S. Patent Nos. 1936760, 2,676,450. 1 sheet of drawings 709 619/136 7.67 © Bundesdruckerei BerJln