DE2645108A1 - HALM HARNESS WITH HEADING GEAR - Google Patents

Description

KARL MENGEiE * SÖHNE

Muidiinenfabrik and f: ise <i;) ießerei
GÜNZaURG-Danube

26A5108

Straw harvester with cutting unit

The invention relates to a stalk harvester with a cutting unit, in particular a maize chopper, in which, for example, two are the inner ones Straw guides of straw dividers continuing on approximately vertical shafts rotating in opposite directions and having drivers Conveyor rollers are arranged, which are arranged at the lower end alternating with at least one in the conveyor track Counter knife cooperating knife are provided and wherein the cut corn plants with the Interface on the stalks to the front - into downstream, e.g. horizontally one above the other, feed rollers of a Chopping device are fed.

In a known stalk harvesting device of this type - see DT-OS 2 157 088 - the knives of both conveyor rollers grip. without mutual contact roughly like gears in one another, so that the counter knife located in the conveyor track one after the other interacts alternately with the knives of the two conveyor rollers. After the cut, the stalks are in this device fed directly into a downstream chopper. The conveyor rollers thus form here at the same time the feed rollers of the chopper, whereby such Maize chopper dependent on a specific in tight The limits of the drawn feed rate.

809815/0098

Maize choppers such as according to of the German utility model 6 608 129, in which the feed rollers are assigned to the feed rollers for the chopper that are transverse to them, since these are the Pull in the crops independently from the feed of the maize chopper. In the case of the last-mentioned maize chopper, the drivers are, among other things, also above the ones that overlap here Slices existing knife the roller shaft wrapping screw bottoms are provided, which are only overlap at the edge or touch with their orbits.

Such arranged screw bottoms not only promote the stalk, but also the whole maize plant, while at the same time lifting it in the mutually engaging counter-rotating screw threads. Due to the relatively large incline path, the stalks can hit the draw-in rollers at unfavorable points, for example above the diameter level of the upper draw-in roller or below the diameter level of the lower draw-in roller. The intake of the stalks is delayed or they are bent or kinked, which makes it difficult to pick up. Moreover, it can ₉ as straws and plant are detected by the same driver su ,, deadlocks

809815/0088

come, whereby plant parts, e.g. the cobs of the maize plants, can be severed and lost.

The object of the invention is, accordingly, _a Förderw lzen to provide with carriers by which the stems are guided in a predeterminable height to the feed rollers, while the remaining parts of the plants do not come into contact with these carriers.

The object of the invention is achieved in that after the cutting of the knife one of their surface or The screw base (vanes) rising from the back of the knife and partially wrapping around the conveyor roller is provided is, where the wrap angles1 of the one Left-hand conveyor roller and right-hand screw bottoms on the other conveyor roller is selected so that only a screw bottom in their overlapping orbits in the conveying area and up to the shaft near the conveying rollers intervenes.

In the device according to the invention, only the cut ones come Culms with their interfaces to the front in contact with the snail bottoms and are from these up raised to a certain optimal intake height. This process is not disturbed by the other parts of the plant.

3098: S / OOSβ

These are created by the subsequent e.g. cylindrical shaft of the conveyor rollers or the carriers provided on them separately managed.

The separation effect of the stalk and the other parts of the plant is significantly promoted in an embodiment of the invention that wedge between the stalk dividers. shaped narrowing in the feed direction, a gap for the Stem-free baffles are provided, dia on the conveyor rollers end above the Sehneckenböd @ n

It is advantageous to use one straw gripping roller each at least two Hessians offset by 180 ° from one another? provide with screw bottoms and the circulation of the same Arrange that the knives of the two ForasrwalEen alternately engage in the '.Gegon knife.

Depending on the number of knives, the screw bottoms can encompass almost 1/4 to almost 1/2 of the circumference of the shaft of the straw gripping rollers, grasp.

Optimal feeding in choppers is achieved in that the conveyor rollers described have two vertically over ·! «" horizontally arranged indentation shafts are used whose feed slot is slightly below the upper end of the screw bottoms.

Of course, the arrangement of a maize chopper can also be implemented with just one stalk gripping roller, which is then designed, for example, with three knives and auger bases, with this then fixed stalk guides are assigned to the other side of the guideway.

It is of course also conceivable that one or more knives and accordingly are only attached to one of two conveyor rollers an almost catchy or several snail bottoms that follow each other at short intervals.

The invention is explained in more detail in the drawing using an exemplary embodiment of a maize mower chopper and described.

Show it:

1 shows a maize mower in a perspective view;

FIG. 2 shows a detail according to the invention of the maize mower chopper according to FIG. 1j

FIG. 3 shows a schematic plan view of the device according to FIG. 2

809815/0096

In the housing 1 of the in ii'ig. 1 shown maize chopper is housed a chopping device, not shown, for example a cutterhead. The knives of the cutterhead cutting of stacked-.cii tanzugswalzen ~ 2 and j> led eye plants on a counter blade, also not shown. The shredded crop passes through an ejection pipe 4 into the loading space of a transport vehicle.

The crop is inevitably fed to the maize chopper by pushing it forward between stalk dividers 5 and 6. Inner guide plates 7 of the stalk dividers 5 and 6 take the plant parts lying above the stalk on. The stalks are held by the guide surfaces of the conveyor trays 7 in an approximately U-shaped cutting frame 8 introduced, the leg and web inner edges are designed as counter blades.

According to the invention are before the üinzugswalzen 2 and 3 above driven or stored there conveyor rollers 9 and 1o provided, on the underside of which two each offset by 180 ° Knives 11 to 14 - see also Fig. 3 - are arranged, which mesh like a gear wheel and thus alternately interact with the counter knife 8. To the top the knife 11 to 14 close according to the invention in

2 L

Connection to the cutting edges 11a to 14a are rising screw bottoms 15 to 18 through which each cut Straws can be raised up to an infeed height that is favorable in relation to the intake rollers 2 and 3.

Like in Pig. 3 to see wrap around the arranged on the conveyor rollers 9 and 1o wing-like screw bottoms 15 to 18 the conveyor rollers only in such a circular arc piece, that when they rotate in opposite directions there is only one screw bottom in the feed gap between the conveyor rollers 9 and 1o is located.

The device works as follows

During the advance of the maize chopper, which is arranged on a tractor in a side-mounted manner, for example by means of a cross traverse 23, the stalks are introduced from the guide plates 7 into the counter knife 8 - as already noted. The remaining parts of the plant are located above the guide plates 7 which, according to the invention, end above the screw bottoms 15. This ensures that the stalks can be lifted separately into the pull-in position, while the other parts of the plant are freely between the conveyor orphans 9 and 1o, which - as shown - ait rib-like take with you 19 and you can be provided,

809815/0096

- ty -

are fed. In the usual way, there are still upright Plant parts either folded over on a housing part 21 or on a folding bracket 22 specially provided for this purpose.

809815/0096

Claims (6)

Claims Straw harvester with cutting unit, especially maize chopper, in which, for example, two of the inner stalk guides of stalk dividers continue at approximately vertical ones Shafts rotating in opposite directions and having carriers are arranged on the the lower end interacting alternately with at least one counter knife arranged in the conveyor track Knives are provided and the cut corn plants with the cut on the stalks to the front in downstream, e.g. horizontally one above the other, infeed rollers Chopping device are fed, characterized in that after the cutting of the knife (11-14) a conveyor roller (9 and 10) a partially looping screw base (wing) (15-18) is provided, the looping angle the left-hand screw heads on one conveyor roller and right-hand screw heads on the other conveyor roller is chosen so that only one screw bottom in their overlapping in the conveying area Orbits and engages in the vicinity of the shaft of the conveyor rollers. 809815/0096 2. Stalk harvesting device according to claim 1, characterized in that between the stalk dividers are wedge-shaped narrowing in the feed direction, a gap for the stalks are provided with guide plates (5 - 7) that are attached to the conveyor rollers (9 and 10) Open out above the screw bottoms (15 - 18). 3. Stalk harvesting device according to claim 1, characterized in that that on each straw gripping roller (9 or 10) at least two knives offset by 180 to one another (13 _ 14) provided with screw bottoms (15-18) whose circulation is set up so that the knives (11 - 14) of the two conveyor rollers (9 and 10) alternately reach into the counter knife (8). 4. straw harvesting device according to claim 3, characterized in that the screw bottoms (15-18) almost Include 1/4 of the circumference of the shaft of the straw gripping rollers. 5. Stalk harvesting device according to claim 1 or claim 1 and at least one of the following claims, characterized in that two vertically one above the other horizontally arranged feed rollers (2 and 3) are used with their feed gap slightly below of the upper end of the screw bottoms (5-18). 809815/0096 6 is characterized by Halraerntegerat Anpruch 5, formed by a single conveyor roll, for example, with three knives and screw floors, said fixed U "ite In the guides at d ^<v r other S (> of the guideway ^ uu oordneL sini. 7 · Stalk harvesting device according to claim 6, characterized in that only one of two conveyor rollers one or more knives with a nearly catchy "or several at short distances from each other subsequent screw bottoms is (are) arranged. δ 0 9 8 1 B / 0 0 9 β