DE1242396B - Straw shaker with longitudinal division for threshing machines - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. CL:

AOIf

German class: 45 e-7/30

Number: 1242396

File number: M67302III / 45e

Filing date: November 17, 1965

Open date: June 15, 1967

The invention relates to a straw walker with longitudinal division for threshing machines, in particular for combine harvesters, with a relative movement to each other executing adjacent trays, wherein at least one tray is provided with a straw comb extending over the entire length.

In known straw shakers of this type, the individual trays that are movable relative to one another have a shaker covering responsible for the screening and arranged approximately perpendicular to the shaker covering, straw combs of the same height. These straw combs are serrated ridges that stretch over the whole Extend the length of the tray and form the upper limit of the walker.

This shaker version has the disadvantage that the straw when working on Slope accumulates in a thick layer on one side of the combine. The shaker effect, especially on the top layer of the accumulated straw, is greatly diminished and the excretion the grains are much smaller.

The invention is based on the object of further developing the straw shaker of the aforementioned type, that it is possible to converge even if the combine harvester is heavily tilted of threshed straw as well as grain on one side of the combine.

According to the invention, this is achieved essentially in that the straw comb in every working position towers above the upper limit of neighboring hordes. Through this straw comb training are effectively prevents the mentioned disadvantages of conventional shakers when working on slopes. About that In addition, the straw walker surface is relieved and the removal of the long straw is facilitated.

At this point it should be mentioned that with known shakers of different design and mode of operation, namely the so-called oscillating frame shakers, longitudinal dividing web walls are used, the disturbing Counteract shifts in the case of combine harvester positions that deviate from the horizontal. A transfer however, this measure on tray shakers was not easily possible. With conventional Tray shakers are, as already mentioned, such longitudinal dividing webs present in the form of the usual straw combs on the trays, but without the one on the swing frame shaker to have achieved effect. Since the individual hordes and thus also the straw combs move against each other in a vertical direction, alternately one straw ridge towers over the other depending on the working position of the horde. A longitudinal

Straw walker with longitudinal division for
Threshing machines

Applicant:

Maschinenfabrik Fahr Aktiengesellschaft,
Gottmadingen (district of Konstanz)

Named as inventor:
Hubert Meier, Hilzingen;
Ernst Rüede, Ehaben

division in the sense of a web wall that prevents the straw from slipping off when the combine harvester is tilted, is not present. This effect only occurs with the inventive straw comb design,

d. h, if the straw comb is at least one horde relative to the other raised so that it is in each working position of the horde the upper limit of neighboring hordes during the whole Duration of the shaking process exceeded. On this simple, only causing minor additional costs Measure, the aforementioned essential functional advantage is achieved with tray shakers. Advantageously, each straw comb is arranged only on one side of the trays carrying it, and the other side of the rack is provided with a balancing counterweight.

It has been found to be particularly useful if only individual ones, specifically preferably the trays in the middle of the shaker with a straw comb and a counterweight are provided.

Further details, advantages and features of the invention emerge from the following description. In the drawing, the invention is illustrated by way of example, namely shows

F i g. 1 shows a schematic longitudinal section through the combine harvester room in which the inventive Shaker located, and

FIG. 2 shows a cross section through the room with the shaker according to FIG. 1.

As can be seen from the schematic representation of the drawing, there is a Shaker or combine harvester housing 1 designed as a rack or as a swing frame shaker Straw shaker with trays 2, which are inside the combine harvester housing 1 with the side walls 3 and the Carry out a relative movement of roof 4. To this

709 590/82

Claims (3)

They are driven by a crankshaft 5 for the purpose. The straw coming from the threshing device 6 is conveyed through the combine harvester housing 1. Individual shaker trays 2, preferably the middle two in the illustrated embodiment, are provided with straw combs 7 which are attached to one tray side wall and extend over the entire length of the shaker. The combs 7 have upwardly projecting teeth of different shapes, through which the conveying speed of the threshed material can be influenced within certain limits. Counterweights 8 are provided to compensate for the unilateral weight load on the shelves 2 caused by the combs 7. The shaker according to the invention works as follows: When threshing by the threshing device 6, the threshed material is thrown onto the shaker 2. The long straw falls across the entire width of the walker, is supported on the high ridges 7 and cannot fall onto the walker surface 9. As a result, the shaker surface 9 is noticeably relieved. In addition, the teeth of the shaker combs 7 achieve a very rapid removal of the long straw in this way. On the other hand, with the shaker design according to the invention, when threshing on a slope, the predominant part of the threshed material can no longer flow to one side of the shaker, but is prevented from flowing off laterally by the combs 7. Of course, in the case of the shaker shown, all four trays 2 can also be equipped with combs 7. This counteracts the flow of the threshed material to the side when working on a slope. Patent claims: 1. Straw shaker with longitudinal division for threshing machines, especially for combine harvesters, with side-by-side trays that execute a relative movement to one another, with at least a horde is provided with a straw comb extending over the entire length, characterized in that the straw comb (7) the upper limit in every working position neighboring hordes (2) dominated. 2. Straw shaker according to claim 1, characterized in that each straw comb (7) only on one side of the horde carrying it (2) is arranged and the other side of the horde with a compensating counterweight (8) is provided. 3. straw shaker according to claim 2, characterized in that only individual, and preferably the trays in the middle area of the shaker (2) with a straw comb (7) and a counterweight (8) are provided. Considered publications:
German interpretative document No. 1148 099. 1 sheet of drawings 709 590/82 6.67 @ Bundesdruckerei Berlin