DK153195B

DK153195B - CROPS FOR AGRICULTURAL CROPS

Info

Publication number: DK153195B
Application number: DK414585A
Authority: DK
Inventors: Josef Gebele; Erwin Reber
Original assignee: Claas Saulgau Gmbh
Priority date: 1984-10-04
Filing date: 1985-09-12
Publication date: 1988-06-27
Also published as: DE3436372C2; DK414585A; EP0176678B1; EP0176678A3; ATE43219T1; DE3570347D1; DK153195C; DK414585D0; DE3436372A1; EP0176678A2; ZA856716B

Abstract

1. A chaff cutter for agricultural harvesting stock having a cutting device (1) with an additional break-up and expulsion device (8, 8'), subordinate to the claff cutter (1) in a connecting expulsion passage (7, 7'), the break-up and expulsion devices being formed as two oppositely directed driven crushing rollers (8, 8') which are designed to post-accelerate the chaff cutter's stock, of which rollers at least one is surrounded by an air path (9) in the inoperative area on its outer circumference, the air path connecting the part of the expulsion passage (7') lying in front of the rollers (8, 8') with the part (7) thereof lying behind the rollers (8, 8'), characterized in that the expulsion passage (7, 7') in the region behind the plane defined by the axes of the two crushing rollers (8, 8') has at least one air valve (13) leading to the outside, a lower opening edge of which lies in a part of the wall of the expulsion passage (7, 7') surrounding one of the rollers (8, 8') and/or air path (9) in front the transition of this part into the expulsion passage (7).

Description

- 1 -- 1 -

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Opfindelsen angår en snitter til landbruget med et efter snitte-apparatet anbragt yderligere knuse- og udkasteapparat ifølge indledningen til krav 1.The invention relates to an agricultural cutter with a further crushing and ejecting apparatus arranged according to the preamble of claim 1, which is arranged after the cutting apparatus.

Maskiner af denne art er fx. vist i DE-offentliggørelsesskrift 5 33.02.980. Den omkring en af knusevalserne førte luftkanal skal for hindre, at der ved snitningen opstår en luftprop foran knusevalserne, der ville udelukke en problemfri indføring af den fra snitteapparatet kommende snittede afgrøde mellem knusevalserne. Det har imidlertid vist sig ved forsøg, at denne luftføringsforanstaltning ikke er tilstraekke-10 lig ved alle arbejdsgange. Ved kraftig majsafgrødegennemstrømning kræver den bag ved knusevalserne udstødte afgrødestrøm fx. tære luft til en problemfri videretransport, end snitteapparatet kan bringe via luftføringskanalen. Der opstår omkring afgrødeudstødningen bag ved knusevalserne et luftundertryk, som kan formindske knusevalsernes kasteydel-15 se i en utilfredsstillende grad. Desuden er der ved høst af meget fugtig afgrøde mulighed for, at der ved snitterens tomgang med nedsat drivhastighed på snitte- og efterknusningsapparatet, fx. når snitteren skal vendes ved enden af marken, løsner sig snittet afgrøde, som har sat sig fast på indervæggen i udkasteskakten, i klumper, som falder ned 20 på knusevalserne. Den transporteres derpå af disse ind i luftføringsskakten, hvor der som følge af snitteapparatets lille omdrejningshastighed og dermed ringe lufttransport kan opstå tilstoppelser.Machines of this kind are e.g. shown in DE Publication Publication 5 33.02.980. The air duct conducted around one of the crushing rollers is to prevent the cutting of an air plug in front of the crushing rollers, which would preclude a trouble-free insertion of the cut crop coming from the cutting apparatus between the crushing rollers. However, it has been found by experiment that this air flow measure is not sufficient for all operations. In the case of heavy maize crop flow, the crop stream emitted behind the crushing rollers requires e.g. air for a trouble-free diversion than the cutter can bring through the duct. There is an air pressure around the crop exhaust behind the crushing rollers which can reduce the casting performance of the crushing rolls to an unsatisfactory degree. In addition, when harvesting very moist crop, it is possible that at the cutter's idle speed with reduced drive speed on the chopping and crushing apparatus, e.g. When the cutter is to be turned at the end of the field, the cut crop, which has stuck to the inner wall of the draft shaft, loosens into clumps which fall 20 on the crushing rollers. It is then transported by these into the air duct where, due to the low rotational speed of the cutter, and thus poor air transport, blockages can occur.

Det er opfindelsens opgave med enkle midler uden kostbar konstruktiv ændring at tilvejebringe en forbedret udførelse, ved hvilken det 25 ikke mere er muligt, at der opstår et luftundertryk i udkasteområdet bag ved knusevalserne, samt at luftføringskanalen tilstoppes. Dette opnås ved hjælp af foranstaltninger ifølge den kendetegnende del af krav 1 og i yderligere udformning ifølge ejendommelighederne i de øvrige krav.It is the object of the invention with simple means without costly structural change to provide an improved embodiment in which it is no longer possible for an air suppression to occur in the ejection area behind the crushing rollers and to block the air duct. This is achieved by means of measures according to the characterizing part of claim 1 and in further design according to the characteristics of the other claims.

30 På tegningen er der vist et udførelseseksempel for opfindelsen, som kan anvendes både ved en tromle- og en skivehjulssnitter, i skematisk gengivelse og beskrevet nærmere i det følgende. På tegningen viser: fig. 1 en udformning ifølge opfindelsen på en skivehjulssnitter 35 i tværsnit efter linien A/A på fig. 2, ogIn the drawing, there is shown an embodiment of the invention which can be used for both a drum and a disc wheel cutter, in schematic representation and described in more detail below. In the drawing: FIG. 1 shows a configuration according to the invention on a disc wheel cutter 35 in cross section along the line A / A in FIG. 2, and

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- 2 - fig. 2 et plansnit efter linien B/B på fig. 1.FIG. 2 is a sectional view along line B / B of FIG. First

Opfindelsen kan anvendes både ved en selvkørende og en traktortrukket eller båret snitter, således at der på tegningen og i den tekniske beskrivelse ikke er gået nærmere ind på den i og for sig kendte 5 udformning af rammestellet samt selve snitteren.The invention can be used both with a self-propelled and a tractor-drawn or carried cutter, so that the drawing and the technical description do not go into further detail on the known configuration of the frame frame and the cutter itself.

Den i udsnit og skematisk viste snitters snitteapparat 1 har en i et hus 2 roterende drevet snitteskive 3, hvis knive 4 virker sammen med et husfast modskær 5. Foran snitteskiven 3 er der anbragt en i og for sig kendt, af roterende drevne tilførsels- og presseorganer bestående 10 transportanordning 6 for tilførsel af den afgrøde, som skal snittes, til snitteskiven 3. Snitterhuset 2 er forbundet med en udkasteskakt 7, 7', gennem hvilken den snittede afgrøde under indkobling af et knuse-og udkasteapparat 8, 8' slynges ned i lastrummet på en eftertrukket eller ved siden af kørende vogn.The sectional cutter apparatus 1, shown in section and schematically, has a cutting disc 3 rotating in a housing 2, the blades 4 of which cooperate with a housing-fixed counter-cutter 5. Prior to the cutting disc 3, a rotary driven supply and pressing means comprising transport means 6 for supplying the crop to be cut to the cutting disc 3. The cutter housing 2 is connected to a ejection shaft 7, 7 ', through which the cut crop is thrown down when a crushing and ejection apparatus 8, 8' in the cargo compartment of a trailed or next to moving vehicle.

15 Det efter snitteapparatet 1 anbragte ekstra knuse- og udkasteappa rat har to via eksempelvis kileremsskiver 11 modsat drevne, profilerede knusevalser 8, 8', som er anbragt således i udkasteskakten 7, 7', at de fører den fra snitteapparatet 1 kommende snittede afgrøde igennem mellem sig og således bevirker en finsønderdeling af de snittede majs-20 strenge og en knusning af de majskorn, som kommer usnittet gennem snitteapparatet.The additional crushing and ejecting apparatus arranged after the cutter apparatus 1 has two, for example driven wedge discs 11 opposite driven, profiled crusher rollers 8, 8 ', which are arranged so in the ejection shaft 7, 7' that they pass through the cut crop coming from the cutter apparatus 1 between them and thus cause a fine breakdown of the cut corn strands and a crushing of the corn grains which come uncut through the cutter.

For under snitningen at undgå en luftprop foran knusevalserne 8, 8' er den ene valse 8 i dens ineffektive ydre omkredsområde omgivet af en luftføringskanal 9, som forbinder den foran valserne 8, 8' liggende 25 udkasteskaktdel 7' med den bag ved valserne liggende udkasteskaktdel 7.In order to avoid an air plug in front of the crushing rollers 8, 8 ', one roller 8 in its ineffective outer circumferential area is surrounded by an air duct 9 which connects the ejection shaft portion 7' in front of the rollers 8, 8 'with the ejection shaft portion lying behind the rollers. 7th

Ifølge opfindelsen er der anbragt en udad førende luftåbning 13 i en ydervæg 10 i luftføringskanalen 9 på et sted, som til dels ligger foran væggens 10 overgang til den bag ved knusevalserne 8, 8‘ liggende udkasteskaktdel 7. Luf tåbningen 13 er udformet i knuse valsernes 8, 8' 30 bredde og med en højde på ca. 10 cm og er opadtil overdækket af en skråt nedad forløbende pladedel 14.According to the invention, an outwardly extending air opening 13 is arranged in an outer wall 10 of the air duct 9 at a location partly in front of the wall 10's transition to the ejection shaft portion 7 behind the crushing rollers 8, 8 '. The air opening 13 is formed in the crushing rollers. 8, 8 '30 width and with a height of approx. 10 cm and upwardly covered by an inclined downwardly extending plate portion 14.

Ved kraftig afgrødegennemstrømning suges den manglende luft ind gennem luftåbningen 13, således at der ikke kan opstå et luftundertryk, som er skadeligt for transporten udad, bag ved knusevalserne 8, 8'.In the case of heavy crop flow, the missing air is sucked in through the air opening 13, so that no air pressure which is harmful to the outward transport can be created behind the crushing rollers 8, 8 '.

35 Hvis der falder afgrødeklumper ned på knusevalserne 8, 8', transporte- - 3 -35 If crop lumps fall on the crushing rollers 8, 8 ', transport - 3 -

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res denne afgrøde udad gennem luftåbningen 13 af valsen 8, således at det ikke mere er muligt at tilstoppe luftføringskanalen 9.this crop is extended outwards through the air opening 13 of the roller 8 so that it is no longer possible to clog the air duct 9.

55

Claims

1. Crops for agricultural crops having a further crushing and ejecting apparatus arranged in the form of two oppositely operated cutters and ejectors, and for a subsequent acceleration of the cut crop-shaped crushing rollers, at least one of which is in its ineffective outer circumference surrounded by an air duct connecting the ejection shaft portion in front of the rollers with the rear of the rollers, characterized in that the ejection shaft (7) in the area behind the crushing rollers (8, 8 ') or behind the shafts of the crushing rollers (8, 8') ) has at least one of the ejection shaft leading 10 air apertures (13).

Section according to claim 1, characterized in that the air opening (13) is arranged in a wall (10) in the air duct (9) at a location,. partially located in front of the transition of the wall (10) to the draft shaft portion (7) behind the rollers (8, 8 ').

Cutter according to claims 1 and 2, characterized in that the air opening (13) is formed approximately in the width of the crushing rollers (8, 8 ').

Section according to claims 1-3, characterized in that the air opening (13) is upwardly shielded or covered by an inclined downwardly extending plate part (14). 20