DE7148517U - Cutting device on agricultural harvesting machines - Google Patents

Description

• »I ·

t V

β Munich 5, C ₁ April 1973

Cati O. Zaefäut ErhardtetraBe8

L Tif 240675

Teiefon 240675

Bavarian plow factory GmbH
89IO Laiidsberg / Lech
v. "Kühlmann-Strasse 25

cutting device on agricultural harvesting machines

The innovation relates to a cutting device on machines for harvesting stems, leaves or stems Crop with an at least partially covered by a hood, stored transversely to the direction of travel and contrary to the direction of rotation of the running wheels of the machine moving in the forward direction, the cutting shaft rotates rapidly.

Known are the so-called flail mowers, in which the material to be mowed is loosely attached to a rotor in a hinge-like manner hinged striking tools designed as flat iron are cut off and conveyed on via an ejection channel will. Here, the rotor or the flail shaft is driven in a direction of rotation that is opposite to that of the The wheels of the tractor seeing the flail mower is directed.

For the mowing of parks and front gardens, roller mowers are often also used, which are helical Knives are arranged on a rotating roller, which cut off the material along a fixed counter-blade.

714851716.8.73

In these known cutting devices there are always a number of individual elements corresponding to the desired working width with a large number of knives or blades, or counter blades required. This necessarily brings a correspondingly high expenditure on drive elements.

In all cutting devices with counter blades, the problem still exists, the cutting edges of the circumferential To bring knife blades to the shearbar and hold them in a sharp cutting system after prolonged use. A Regrinding is often difficult with this type of construction and usually requires special tools.

A cutting device of the type mentioned at the beginning in the form of a lawnmower is known from US Pat. No. 3,068,632, in which the cutting shaft rotates relatively quickly against the direction of rotation of the impellers. This well-known

M » _nA l. <; _HA * ~ * «ΐ_ ~« _η · ΐ. * 3. *** · maw «« Ί Λ-ΐΛ-r. ». * ·» A * - * + mi »t, mvf {/ ve 7nwf nniöf an V * AvVk ac *

The object of the innovation is to improve a cutting device of the type mentioned in that it on a relatively large working width, i.e. with a large area coverage, and also in the presence of uneven ground can be used without the cutting tools impaired or even damaged by uneven floors will.

This object is achieved according to the innovation in that the cutting shaft has a triangular profile, made up of sections consisting is articulated and on the joint serving as a coupling of the individual shaft sections provide interim storage facilities.

By designing the cutting shaft as a triangular shaft, cutting edges are created that are correspondingly faster Rotation can do without an anvil.

»Ι

The desired sonic effect occurs as soon as the shaft has reached a speed of around 20,000 revolutions / min, or its cutting edges have reached a circumferential speed of 50 - 60 m / sec. With this rapid circulation of the Schneidweiie ταίνύ even lisgendss Sut uurafc usr. veu der wave generated air flow erect and separated without the appearance of wrapping *

To achieve larger working widths, it is advantageous to provide the sonid shaft with intermediate bearings at certain intervals, whereby the bearing points should be particularly slim and sword-like in the direction of travel, so that crops can be fed to the rotating cutting shaft.

In order to be as flexible as possible in the choice of the working width, depending on the terrain or the density of the crop to be cut and to be adaptable * is the wells made of unique pieces assembled, which are articulated to each other in the intermediate bearings. The individual shaft pieces can, for example, have a length of 30 cm, so that you can with several the same components have different joint work * widths can reach, for example 1.5 * 1 * 8 or 2.1 m.

To achieve a uniform working depth, the shaft is equipped with height-adjustable support means known per se, such as Equipped with grinding shoes, support wheels, runners or the like.

Another advantageous embodiment results when the The cutting edges of the shaft run helically and the conveying direction of the screw threads is directed away from the standing material. This ensures that the air flow through the rapidly rotating cutting edges also experiences a lateral component through which the cut crop is carried along immediately after cutting and, under favorable circumstances, is deposited on the already harvested land side can.

t

Often ·
• · ·

- I ₁ -

In order to be able to better grasp high-standing crop when cutting, the hood covering the shaft is provided with baffle plates or hold-down plates on the front side.

w> ^ 44W * s nww * Μ44Α VUIgWVCAW ^ AVAVO JL OW Vl JL ϋ XV GT Vl 9 X 'IAiI

shown in the drawing and explained below; in the Drawing shows:

Fig. 1 shows the cutting device in a side view; Fig. 2 is a corresponding top view.

On a frame 1 the displaceable in rapid rotation of the cutting shaft 3 is mounted in bearings 2 and is driven via a transmission ¹ and I via a cardan shaft 5 by a not shown in the drawing, the tractor.

Above the cutting shaft ^ an arcuate protective cover 6 is arranged t, r 'is provided with its front side impact or hold-down plates. 7

? -Only height adjustment are on the two outer sides of the Frame 1 height-adjustable grinding shoes 8 arranged between which the fast rotating cutting shaft is rotatably received at intervals by intermediate bearings.

In the depositing area of the cutting device, side plates 9, 10 designed as swath plates are provided.

Protection claims:

71 * 8817 in.

Claims (5)

ι t I · ill * claims for protection! 1. Cutting device on machines for harvesting stalk, leaf or stalk-like crop with an at least partially covered by a hood, mounted transversely to the direction of travel and counter to the Uinlaufrichtung dar running wheels of the machine moving in the forward direction fast cutting shaft, characterized in that the Schneiöwelle (3) has a three-crank profile, is constructed in an articulated manner consisting of subsections and intermediate bearings are provided at the articulation points serving as a coupling of the individual shaft sections. 2. Cutting device according to claim 1, characterized in that the intermediate bearings of several resilient support arms are held, which in turn are guaranteed with a resilient, shell-shaped frame (1). 3 cutting device according to claim 2, characterized in that that the frame (1) is designed as a hood and for dropping the cut material at a distance from the cutting shaft is arranged. 4 «cutting device according to claim 1, characterized in that that the profile edges of the triangular profile of the shaft (3) run helically and the conveying direction of the Screw threads are directed away from the standing good. 5. Cutting device according to claim 1 »characterized in that the cutting shaft (3) with known height-adjustable support means (8) such as grinding shoes, support wheels, Skids or the like. Equipped.