DE2814718A1 - FIELD HARVESTERS - Google Patents

Description

LEINWE] CARPENTER

PATENT LAWYERS

DrpL-tng. H. Leinweber cie »-re> Dipl.-fng. Heinz Zimmermann Dipl.-Ing. A. Gf. v. Wengersky

Rosental 7 D-8000 Munich 2

2. Ascent (Kustermann-Passage) Telephone (089) 2603989 Telex 52 8191 lepatd Telegr. Addr. Leinpat Munich

On April 5, 1978

Our sign Zi / C

EFM 689/76

Klöcfcner-Iiumboldt-Üeutz AG> Fahr branch

Grottmadingen

Forage harvester

The invention relates to a forage harvester with. on the circumference of its cutterhead at regular angular intervals distributed knife carriers for knives fixed on them, the length of which corresponds to the desired cutting width of the The knife drum corresponds to and which, together with its carrier, is approximately parallel to the drum axis in relation to the knife drum extending pivot axis are pivotably mounted.

In a known forage harvester of this type (US Pat. No. 2,835,298) becomes with the questionable pivotability of the knife-knife carrier units ensured that the knives, when they hit the cutting edge area, saws or pieces of wood, can evade; in this way soiled damage-

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ORIGINAL INSPECTED

38U718

knives are largely avoided. Although the ; Hasse's knife-knife carrier units are kept relatively small, practice has shown that there is damage As a rule, do not let the foreign bodies turn it off. This damage brings considerable Consequential damage, namely high repair costs and long downtimes. The latter are particularly at the introduction of wilted silage is very disadvantageous, due to the weather risk and the risk of exposure to the weather resulting poor silage quality. You have the risk of damaging the knife can reduce known metal location; In this way, however, non-magnetizable foreign bodies, especially stones, do not excrete.

The invention is based on the object of further developing the forage harvester of the type mentioned at the beginning, that the disadvantages mentioned are avoided in a relatively simple way, i.e. a forage harvester is created, in which the risk of knife damage due to impact with foreign objects is largely eliminated and the possibility the quick and easy removal of any damage is increased.

This object is essentially achieved in that each knife and each knife carrier is divided into a plurality adjacently arranged partial knife or partial knife carrier is divided and that the partial knife-partial knife carrier units can be pivoted back independently of one another in the event of an impact on a foreign body that has entered its cutting edge area and, if necessary, can also be detached from the cutterhead independently of one another.

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9 0 9841/0312

ORIGINAL INSPECTED

$ 181471

By dividing the haters into partial knives, the mass of each partial knife-partial knife carrier unit becomes reduce quite considerably, so that in the event of a collision with a foreign body, the units in question can easily pivot back and thus evade. On the other hand are located the knives move in a sufficiently safe working position so that the chopped material is cut through properly. The subdivision in question also brings in a very advantageous way the simple interchangeability of a damaged partial knife a new one due to the easy detachability of each partial knife-partial knife carrier unit independently of the other units from the cutterhead with it.

In a forage harvester with a circumference of the knife drum distributed, the storage has proven to be extremely favorable the knife carrier serving support axes and parallel to these extending, the pivoting path of the knife carrier under the effect of centrifugal force limiting and thus determining the working position of the knife stop bars the characteristic that the partial knife carriers are hook-shaped at their ends facing away from the associated partial knife are formed and, in the assembled state, each with this hook-shaped end, the inner surface of which is the outer surface the support axis is adapted to encompass the support axis. Due to this formation of the partial knife carrier results in a Particularly easy assembly and, if necessary, also dismantling of each partial knife-partial knife carrier unit.

809841/0312

I8U7T8

According to another first embodiment the possibility that the hook-shaped end of each part knife carrier an angular range of a maximum of 180 ° of the support axis is formed encompassing and that each partial knife carrier assigned a fixing plate screwed to it is, the one the hook-shaped end of each part knife carrier complementing .Anlagefläche on the support axis owns. Such an additional fixing plate with the associated screw connection can be dispensed with, if, according to a particularly advantageous further embodiment, the hook-shaped end of each partial knife carrier eirPi angle range of over 180 ° encompassing the support axis auegebilden and that each support axis is one of the honing or dismantling of the partial knife carrier in the pivoted-back state enabling flattening.

It has proven to be very advantageous if each partial knife carrier in the direction of the cut-off edge is spring loaded. From a structural point of view, it is advantageous here if the spring loading in question is used Each partial knife carrier is assigned a leg spring, which is attached to the knife drum with one of its legs and engages with its other leg at a point on the partial knife carrier at a distance from the support axis. One such leg spring can be solved relatively easily in the event of dismantling.

Further details, advantages and features of the invention emerge from the following description and the drawing, to which reference is expressly made for all details not described in the text. It shows:

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009841/0312

18U718

Fig. 1 is a section through the cutterhead

of a forage harvester to illustrate the formation of a partial knife-partial knife carrier unit according to a first embodiment,

FIG. 2 a front view of a detail of the knife drum according to FIG. 1, and FIG

FIG. 3 is a sectional view corresponding to that of FIG. 1 to illustrate a modified embodiment.

As can be seen from the drawing, the illustrated knife drum comprises on its circumference at uniform angular intervals Tragachseti 1, on each of which a plurality of partial knife carriers 2 are pivotally mounted for part seaers 3 attached to them. FIG. 1 shows that the partial knives 3 arranged next to one another complement each other to form a knife, the length of which is adapted in each case to the desired cutting width of the knife drum. The individual Teilaesser 3 are fixed on the Teilmeesertträger with the help of screw bolts 4, which penetrate the elongated holes of the partial knife §. When the knife drum rotates, the partial guides 2 are pivoted outward under the effect of the centrifugal force. Parallel to the support axles 1 extend in each case the pivoting path of the partial knife carrier 2 limiting and thus the working position of the partial knife 3 determining stop bars 6. In FIG.

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109841/0312

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belonging stop bar 6 is shown. In dashed Lines are the respective pivoted back position of the partial knife carriers 2 with their partial knives 3 illustrated.

The partial knife carriers 2 are on their associated Partial knife 3 facing away from the end each formed hook-shaped. In the assembled state they include the be hook-shaped end 7> whose inner surface 8 each of the Outer surface 9 of the support axis 1 is adapted to the support axis

In the embodiment illustrated in FIG the hook-shaped end 7 of each partial knife carrier 2 encompasses an angular range of a maximum of 180 ° of the support axis 1 educated. So that the partial knife carrier 2 cannot become detached from the support axis 1, each partial knife carrier is 2 is assigned a fixing plate 10 screwed to it, one of which is the hook-shaped end 7 of each partial knife carrier has additional contact surface 11 on the support axis 1. Screw bolts 12 are used to set the Fixing plate 10 on the partial knife carrier 2.

A second embodiment is illustrated in FIG. 3, in which the hook-shaped end 7 of each partial knife carrier 2 is designed to encompass an angular range <f- of over 180 ° around the support axis 1. In order to enable assembly or disassembly of the Teilmejsserträger 2 on or from the support axis 1, each.Tregaohae ^ l · '. J ■ :: 'provided with a flat 13. This flattened area 13 is aligned in the manner illustrated in the drawing in order to enable the partial knife carrier 2 to be released in the pivoted-back state.

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909841/0312

3814718

So that the partial knife carriers 2 do not undesirably move into the swiveled-back position and can detach themselves from the support axis 1, each partial knife carrier 2 is spring-loaded in the direction of the stop bar β. To this end each part blade carrier 2 is assigned a leg spring 14, the one leg of AO with i & friction of the blade drum and with its other leg at a point of the knife carrier part 2 engages at a distance from the support shaft. 1

As can be seen from Fig. 1, each partial knife carrier, ger 2 for fixing the position of the partial knife 3 can be provided on its outer end face with a toothing into which the corresponding toothing of the partial knife 3 engages.

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Claims (7)

28H718 Patent applications Forage harvester with. ' .; on the circumference of his knife drum Knife carriers distributed at even angular intervals for knives attached to them, their length corresponds in each case to the desired cutting width of the cutterhead and which together with its carrier in relation to the Knife drum are mounted pivotably about a pivot axis extending approximately parallel to the drum axis, thereby characterized in that each knife and each knife carrier is divided into a plurality of juxtaposed partial knives (3) or partial knife carrier (2) is divided and that the partial knife-partial knife carrier units independently of one another in the event of a collision with someone coming into their cutting edge area Foreign bodies can be swiveled back and, if necessary, also independent of each other from the cutterhead are solvable. 2. A forage harvester according .Anspruch 1, distributed with the periphery of the cutterhead, the mounting of the blade carrier serving support axles and is determined in parallel to this extending, the pivoting of the blade carrier limiting under the action of centrifugal force and so that the work exposure of the knife insohlagleisten, gekeonieiohnet characterized that the part of the knife carrier (2) are hook-shaped at their the associated Teileeeser (3) ends applied (7) and in aontifrten state respectively old who et »haktßiemigen Maat, de β" it inner surface (8) of the iußenflfiohe (9) it * ? rig *> n ·· O) touched % n \, the support axis »grips ·«. _Q ORIGINAL INSPECTED 281A7H 3. Forage harvester according to claim 2, characterized in that that the hook-shaped end (7) of each partial knife carrier has an angular range of a maximum of 180 ° of the support axis (1) is designed to encompass and that each partial knife carrier (2) has a fixing plate screwed to it (10) is assigned, the one the hook-shaped end (7) of each partial knife carrier (2) complementing the contact surface (11) on the support axis. 4. Forage harvester according to claim 2, characterized in that the hook-shaped end (7) of each partial knife carrier an angular range of over 180 ° of the support axis (1) is designed encompassing and that each support axis one the assembly or disassembly of the partial knife carrier (2) in the pivoted-back state enabling flattening (13). 5. Forage harvester according to claim 4, characterized in that each partial knife carrier (2) in the direction is spring-loaded on the stop bar (6). 6. Forage harvester according to claim 5, characterized in that a leg spring (14) is assigned to each partial knife carrier (2), which serträgers with one leg on the sea drum and with its »other legs at a point of the partial knife ia Abetand von der Trtgaahe · (1) attacks. ORIGINAL INSPECTED 7. Forage harvester according to claim 6, characterized in that each partial knife carrier (2) on the outer end face has a toothing for the positional fixation of the old partial knife (3), which has been provided with a corresponding toothing, 909841/0312