DK160527B

DK160527B - AGRICULTURAL TRANSMISSION

Info

Publication number: DK160527B
Application number: DK213285A
Authority: DK
Inventors: Michel Quirin
Original assignee: Kuhn Sa
Priority date: 1984-05-25
Filing date: 1985-05-14
Publication date: 1991-03-25
Also published as: EP0165191B1; EP0165191A1; DE3571739D1; ATE44851T1; FR2564689B1; FR2564689A1; DK213285D0; DK160527C; DK213285A

Abstract

1. Agricultural implement with especially one frame (1) equipped with tools (2) driven in rotation during work by a driving device such as the power take-off shaft (17) of a driving tractor (16) by means of a drive shaft (27) and of transmission means, said transmission means being integrated to the machine and made up of two parallel transmission shafts (21 and 22), each equipped with a gear wheel (19 and 20) which intermeshes with the gear wheel of the other parallel shaft, one of these transmission shafts (21, 22) being related to a drive pinion (25) of said tools (2) and one end of said transmission shafts (21, 22) which can be connected to the drive shaft (27), characterized by the fact that the transmission shafts (21 and 22) and the gear wheels (19 and 20) make up a unit which can be removed from the machine, turned 180 degrees around an axis parallel to the transmission shafts and reinserted into the machine, that each of these transmission shafts has an end (23, 24) which can be connected to the drive pinion (25), whereas only one of these transmission shafts has its other end (26) designed to be connected to the drive shaft (27).

Description

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iin

Den foreliggende opfindelse angår en transmission til en landbrugsmaskine, der blandt andet indbefatter en ramme, som bærer redskaber, der under arbejdet drejes ved hjælp af en drivmekanisme, som for eksempel en traktors kraftudtagsaksel samt transmissionsorganer, der er inte- 5 greret i maskinen, og som består af to parallelle transmissionaksler, der hver er forsynet med et tandhjul, som er i indgreb med hinanden, hvorhos en af disse transmissionsaksler står i forbindelse med et tandhjulsdrev for redskaberne, og hvorhos en ende af en af transmissionsakslerne kan være forbundet med drivakslen.The present invention relates to a transmission for an agricultural machine, which includes, inter alia, a frame carrying tools that are rotated during operation by a drive mechanism, such as a tractor power take-off shaft and transmission means integrated into the machine, and which consists of two parallel transmission shafts, each provided with a gear which interacts with one another, wherein one of these transmission shafts communicates with a gear drive of the implements, and where one end of one of the transmission shafts may be connected to the drive shaft.

10 Sådanne redskaber er almindeligvis tilvejebragt for at dreje i en retning, der er defineret som funktion af det arbejde, hvortil maskinen er beregnet. I forbindelse med skårlæggere skal hver rotor således dreje i retningen med urviserne, hvis maskinen er tilvejebragt for at 15 anbringe skåren på sin højre side i forhold til fremføringsretningen eller i den modsatte retning, hvis maskinen er tilvejebragt for at anbringe skåren på den venstre side.Such tools are generally provided for turning in a direction defined as a function of the work for which the machine is intended. Thus, in the case of mowers, each rotor must rotate in the clockwise direction if the machine is provided to position the notch on its right side relative to the feed direction or in the opposite direction if the machine is provided to place the notch on the left side.

I betragtning af at rotationsretningen for frontkraftudtagsaksler på 20 traktorer er forskellige fra model til model er det nødvendigt at tilvejebringe organer, som afhængigt af det enkelte tilfælde, muliggør en vending af rotationsretningerne for at kunne drive de maskiner, der er tilkoblet til disse traktorer, korrekt.Given that the direction of rotation of the front PTO shafts of 20 tractors differs from model to model, it is necessary to provide means which, depending on the individual case, enable a reversal of the rotational directions in order to operate the machines connected to these tractors properly. .

25 I det tilfælde hvor maskiner drives af kraftudtagsaksler, der er anbragt bagpå traktorerne, er det ligeledes ofte fordelagtigt at kunne drive redskaberne i den modsatte retning af den som normalt er tilvejebragt af nævnte aksler.In the case where machines are driven by PTO shafts located on the rear of the tractors, it is also often advantageous to be able to drive the tools in the opposite direction to that normally provided by said shafts.

30 Af disse forskellige grunde er det meget væsentligt at tilvejebringe organer, der gør det muligt for hver bruger at ændre rotationsretningen for maskinens arbejdsredskaber som funktion af sin traktor og det ønskede arbejde.30 For these various reasons, it is very important to provide means for each user to change the direction of rotation of the machine's working tools as a function of its tractor and the desired work.

35 Med henblik herpå er der fremstillet en jordbearbejdningsmaskine, der er beskrevet i det franske offentliggørelsesskrift nr. 2.312.184, og som omfatter en omstyringsklo. Denne er forskydelig mellem to koniske tandhjul, som er tilvejebragt på en af transmissionsakslerne, og som er i indgreb med tandhjulsdrevet for arbejdsredskaberne. Kloen kan35 For this purpose, a tillage machine described in French Patent Laid-Open No. 2,312,184 has been produced and includes a clawing device. This is slidable between two tapered gears provided on one of the transmission shafts and which engage the gear drive of the working tools. The claw can

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2 blive bragt i indgreb med det ene eller det andet af tandhjulsdrevene på en sådan måde, at det ved hjælp af tandhjulsdrevene kan rotere arbejdsredskaberne i den ønskede retning.2 are engaged with one or the other of the gears in such a way that it can rotate the working tools in the desired direction by means of the gears.

5 Denne omstyringsindretning er meget dyr, hvilket bevirker, at dens anvendelse kun er berettiget i de tilfælde, hvor en omstyring af arbejdsredskabernes rotationsretning skal udføres hyppigt.5 This steering device is very expensive, which means that its use is justified only in cases where a reversal of the rotary direction of the working tools is to be carried out frequently.

Det er formålet med den foreliggende opfindelse at tilvejebringe en 10 transmission, der muliggør en omstyring af arbejdsredskabernes rotationsretning, og som er meget enkel, billigere, og som fylder mindre end de kendte transmissionsmekanismer.It is the object of the present invention to provide a transmission which enables a reversal of the rotational direction of the working utensils, which is very simple, less expensive and which occupies less than the known transmission mechanisms.

Af hensyn hertil består et væsentligt særpræg ved opfindelsen i, at 15 transmissionsakslerne og tandhjulene danner en enhed, der er i stand til at blive udtaget af maskinen, blive drejet 180° omkring en akse, der er parallel med transmissionsakslerne og blive genindført i maskinen, at hver af transmissionsakslerne har en ende, der kan være forbundet med et tandhjulsdrev, og at kun en enkelt af disse transmis-20 sionsaksler har sin anden ende udformet for at kunne blive forbundet med drivakslen.For this purpose, an essential feature of the invention consists in the fact that the transmission shafts and gears form a unit capable of being removed by the machine, being rotated 180 ° about an axis parallel to the transmission shafts and re-inserted into the machine. that each of the transmission shafts has an end that may be connected to a gear drive, and that only one of these transmission shafts has its other end designed to be connected to the drive shaft.

For at ændre rotationsretningen for arbejdsredskaberne på maskinen er det tilstrækkeligt at dreje den reversible enhed 180° omkring en mid-25 terakse, der er parallel med transmissionsakslerne.In order to change the direction of rotation of the working tools on the machine, it is sufficient to rotate the reversible unit 180 ° about a central axis parallel to the transmission shafts.

Valget af arbejdsredskabernes rotationsretning er tilvejebragt ved forbindelsen mellem den første eller den anden transmissionsaksel og maskinens tandhjulsdrev.The choice of the direction of rotation of the work tools is provided by the connection between the first or second transmission shaft and the gear drive of the machine.

3030

Afhængigt af hvad der er tilfældet sker overførslen direkte gennem en enkel af transmissionsakslerne eller ved overførsel fra den ene aksel til den anden ved hjælp af deres tandhjul. I førstnævnte tilfælde drives maskinens tandhjulsdrev i samme retning som traktorens kraftud-35 tagsaksel, medens tandhjulsdrevet i det andet tilfælde drives i den modsatte retning. Således kan brugeren, ved at ændre tandhjulsdrevets rotationsretning, vælge rotationsretningen for sin maskines arbejdsredskaber.Depending on the case, the transmission is done directly through a simple of the transmission shafts or by transmission from one shaft to the other by means of their gears. In the former case, the gear drive of the machine is driven in the same direction as the tractor PTO shaft, while in the second case the gear drive is driven in the opposite direction. Thus, by changing the direction of rotation of the gear drive, the user can select the direction of rotation of his machine's working tools.

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Den reversible enhed ifølge opfindelsen er meget enkel at tilvejebringe, hvilket gør det muligt at sænke dens fremstillingspris. Endvidere er omstyringen af arbejdsredskabernes rotationsretning opnået på en meget enkelt måde.The reversible unit of the invention is very simple to provide, which makes it possible to lower its manufacturing cost. Furthermore, the reversal of the direction of rotation of the tools is achieved in a very simple way.

55

Ifølge et andet særpræg ved opfindelsen er de to transmissionsaksler monteret på en plade, som fordelagtigt danner dækslet til et hus for arbejdsredskabernes medbringning. Denne monteringsmåde gør det muligt at reducere mekanismens omfang og letter manøvrerne med henblik på 10 valg af arbejdsredskabernes rotationsretning.According to another feature of the invention, the two transmission shafts are mounted on a plate which advantageously forms the cover for a housing for carrying the working tools. This method of assembly makes it possible to reduce the scope of the mechanism and facilitates maneuvers in order to select the direction of rotation of the tools.

Opfindelsen vil herefter forklares nærmere under henvisning til den medfølgende tegning, der viser en udførelsesform for opfindelsen, og hvor 15 fig. 1 viser et billede af en maskine med en transmission ifølge opfindelsen, fig. 2 et billede, i forstørret målestok, af omstyringsmekanismen, set fra siden, og 20 fig. 3 et snit ifølge planet III-III i fig. 2.The invention will then be explained in more detail with reference to the accompanying drawing, which shows an embodiment of the invention, in which FIG. 1 is a view of a machine having a transmission according to the invention; FIG. 2 is an enlarged side view of the rearrangement mechanism; and FIG. 3 is a sectional view of the plane III-III of FIG. 2nd

Maskinen, som er vist i fig. 1, er en skårlægger. Den indbefatter en ramme 1, der bærer arbejdsredskaber 2. Disse er tilvejebragt af tre cylindriske stammer 3,4 og 5, der hver, ved sin nedre del, bærer en 25 bøjelig krans 6,7 og 8 med henblik på at opsamle og forskyde foder, der er bredt ud på jorden.The machine shown in FIG. 1, is a cutter. It includes a frame 1 carrying working tools 2. These are provided by three cylindrical strains 3,4 and 5, each carrying at its lower part a flexible bend ring 6.7 and 8 for collecting and displacing feed. that is wide on the ground.

Til rammen 1 er der ved hjælp af dragere 9 og 10 forbundet en forkrøb-bet ramme 11, der er forsynet med en trepunktsforbindelse. I hvert af 30 disse forbindelsespunkter er der forbundet en ende af en tilkoblingsstang 12,13 og 14, hvis anden ende er forbundet med en delvis vist traktor 16's frontale løfteindretning 15. Denne indretning gør det muligt at hæve eller sænke maskinen, og at forskyde den i fremføringsretningen, som er indikeret med pilen A.To frame 1, a cantilevered frame 11 is provided by means of supports 9 and 10, provided with a three-point connection. At each of these 30 connection points, one end of a connecting rod 12, 13 and 14 is connected, the other end of which is connected to the front lifting device 15 of a partially shown tractor 16. This device allows to raise or lower the machine and to displace it. in the forward direction indicated by the arrow A.

3535

Under arbejdet drejes de cylindriske stammer 3,4 og 5 ved hjælp af traktoren 16's kraftudtagsaksel 17. Maskinen er forsynet med drivorganer, der udgør en reversibel enhed 18, der er integreret i maskinen, og som gør det muligt at bestemme rotationsretningen for de cylindris- 4During operation, the cylindrical shafts 3, 4 and 5 are rotated by means of the power take-off shaft 17 of the tractor 16. The machine is provided with drive means which constitute a reversible unit 18 which is integrated in the machine and which allows the direction of rotation of the 4

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ke stammer 3,4 og 5. I tilfældet med denne skårlægger er det nødvendigt at dreje de cylindriske stammer i retning af pilene H for at opnå en tværgående forskydning af høet eller foderet og dannelsen af en skår på den side af maskinen, som er nærmest traktoren.in the case of this cutter it is necessary to rotate the cylindrical strains in the direction of the arrows H to obtain a transverse displacement of the hay or fodder and the formation of a cut on the side of the machine closest to it. tractor.

5 Således som det fremgår af fig. 2 og 3, består enheden 18 blandt andet af to tandhjul 19 og 20, som er tilnærmelsesvis identiske, og som er i indgreb med hinanden. Hvert af disse tandhjul 19,20 er fastgjort til en transmissionsaksel 21 og 22 ved hjælp af noter 56 og 57. Hver af 10 disse transmissionsaksler har en ende 23 og 24, der kan forbindes med et tandhjulsdrev 25, som er monteret på maskinen. Til brug herfor er enderne 23 og 24 forsynet med riller, som kan være bragt i indgreb med riller, som er tilvejebragt i tandhjulsdrevet 25. Mellem nævnte rillede ender og tandhjulsdrevet 25 er der tilvejebragt en gi ideindstil-15 ling. Transmissionsakslen 21's anden ende 26 er rillet for at kunne blive forbundet med en drivaksel 27 (vist skematisk i fig. 1), som sikrer forbindelsen med traktoren 16's kraftudtagsaksel 17.5 As shown in FIG. 2 and 3, the unit 18 consists, inter alia, of two gears 19 and 20 which are approximately identical and which are engaged with one another. Each of these gears 19,20 is secured to a transmission shaft 21 and 22 by means of grooves 56 and 57. Each of these 10 transmission shafts has an end 23 and 24 which can be connected to a gear drive 25 mounted on the machine. For use therewith, the ends 23 and 24 are provided with grooves which may be engaged with grooves provided in the gear drive 25. Between said grooved ends and the gear drive 25, there is provided an idea setting. The other end 26 of the transmission shaft 21 is grooved to be connected to a drive shaft 27 (shown schematically in Fig. 1) which secures the connection to the PTO shaft 17 of the tractor 16.

Enheden 18 er anbragt i et kammer 58 i et vendegearhus 28, der er mon-20 teret over den midterste cylindriske stamme 4. Transmissionsakslerne 21 og 22 er monteret på en plade 29, som danner dækslet for huset 28's kammer 58. Dets fastgørelse er tilvejebragt ved hjælp af fire skruer 30-33. Denne plade 29 er forsynet med to lejehuse 34 og 35, hvori der er anbragt kuglelejer 36 og 37, der har til formål at styre transmis-25 sionsakslerne 21 og 22.The unit 18 is arranged in a chamber 58 in a turning gear housing 28 mounted over the middle cylindrical stem 4. The transmission shafts 21 and 22 are mounted on a plate 29 which forms the cover for the chamber 58 of the housing 28. Its fastening is provided. using four screws 30-33. This plate 29 is provided with two bearing housings 34 and 35, in which ball bearings 36 and 37 are provided, for the purpose of controlling the transmission shafts 21 and 22.

Midten af hvert af disse to lejehuse 34 og 35 er anbragt på samme vandrette linie E, der er tilvejebragt midt mellem fastgørelsesskruerne 30,33 og 31,32 og i en identisk afstand fra en lodret linie V, der 30 er anbragt midt mellem fastgørelsesskruerne 30,31 og 32,33.The center of each of these two bearing housings 34 and 35 is disposed on the same horizontal line E provided midway between the fastening screws 30,33 and 31,32 and at an identical distance from a vertical line V located 30 midway between the fastening screws 30 , 31 and 32.33.

Pladen 29 er desuden forsynet med en åbning 38, for passage af transmissionsakslen 21's rillede ende 26.The plate 29 is further provided with an opening 38 for passage of the grooved end 26 of the transmission shaft 21.

35 På indersiden af kammeret 58 indbefatter vendegearhuset 28 et lejehus 39. I dette lejehus er der anbragt et rulleleje 40 for styring, afhængigt af det enkelte tilfælde, af transmissionsakslen 21's ende 23 eller akslen 22's ende 24. Mellem enderne 23 og 24 og rul!el ejet 40 er der tilvejebragt en gi ideindstilling. Positioneringen af lejet er sik-35 On the inside of the chamber 58, the turning gear housing 28 includes a bearing housing 39. In this bearing housing, a roller bearing 40 is arranged for control, depending on the individual case, of the transmission shaft 21's end 23 or the shaft 22's end 24. Between the ends 23 and 24 and roll! or owned 40, a giveaway idea is provided. The positioning of the bearing is secure.

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5 ret ved hjælp af en skulder 41, der fungerer som anslag og en sikkerhedsring 42.5 by means of a shoulder 41 acting as a stop and a safety ring 42.

Tandhjulsdrevet 25 er styret i et rulle!eje 43, som er anbragt i et 5 andet lejehus 44 i kammeret 58's inderside. Dets positionering i forhold til dette kugleleje 43 er sikret ved hjælp af en skulder 45 og en sikkerhedsring 46. Kuglelejet 43 er ligeledes positioneret ved hjælp af en skulder 47, som er tilvejebragt i lejehuset 44 samt en sikkerhedsring 48.The gear drive 25 is guided in a roller bearing 43 which is disposed in a second bearing housing 44 on the inside of the chamber 58. Its positioning relative to this ball bearing 43 is secured by a shoulder 45 and a safety ring 46. The ball bearing 43 is also positioned by a shoulder 47 provided in the bearing housing 44 and a safety ring 48.

10 Således som det ses i fig. 3, er tandhjulsdrevet 25 i indgreb med en tandkrans 49, der er anbragt i huset 28. Tandkransen 49 er fast forbundet med den cylindriske stamme 4 og drejer sidstnævnte under arbej det. Tandkransen er desuden i indgreb med et tandhjulsdrev 50, som ved 15 hjælp af en not 51 er forbundet med en aksel 52, der er udstrakt i rammen 1. Denne aksel 52 indbefatter, i området for de andre cylindriske stammer 3 og 5, tandhjulsdrev, som er i indgreb med tandkranse, der er fast forbundet med disse cylindriske stammer, for således at drive disse under arbejdet. Disse tandhjulsdrev og kranse er af samme 20 type, som tandhjulsdrevet 50 og kransen 49 og er anbragt i vendegear-huse 53 og 54, der er monteret over de cylindriske stammer 3 og 5.10 As seen in FIG. 3, the pinion gear 25 is engaged by a gear ring 49 disposed in the housing 28. The gear ring 49 is firmly connected to the cylindrical stem 4 and rotates the latter during operation. The gear ring is also engaged by a gear drive 50, which is connected by means of a groove 51 to a shaft 52 which is extended in the frame 1. This shaft 52 includes, in the region of the other cylindrical strains 3 and 5, gear wheels, which are in engagement with dental crowns which are firmly connected to these cylindrical strains so as to drive them during operation. These gears and gears are of the same type as the gears 50 and the gland 49 and are housed in turning gear housings 53 and 54 mounted over the cylindrical trunks 3 and 5.

For at ændre omdrejningsretningen for de cylindriske stammer 3-5 på en måde, så de drejer i retning af pilene H, er det nødvendigt at tage 25 hensyn til omdrejningsretningen for traktorens 16's kraftudtagsaksel 17. Dersom denne drejer i den retning, som er indikeret af pilen F i fig. 1, det vil sige i retning med urviserne for en betragter, der er anbragt foran traktoren, vil drivakslen 27 drive transmissionsakslen 21 i samme retning F.In order to change the direction of rotation of the cylindrical shafts 3-5 in a manner that they rotate in the direction of the arrows H, it is necessary to take into account the direction of rotation of the PTO shaft 17 of the tractor 16, if it turns in the direction indicated by arrow F in FIG. 1, i.e. in a clockwise direction for a viewer positioned in front of the tractor, the drive shaft 27 will drive the transmission shaft 21 in the same direction F.

30 I det eksempel på montering, som er vist med fuldt optrukne linier i fig. 3, driver transmissionsakslen 21 den anden aksel 22 ved hjælp af tandhjulene 19 og 20. Denne drejer i den modsatte retning, således som indikeret med pilen G. Transmissionsakslen 22 driver således den cy-35 lindriske stamme 4 i retningen af pilen H ved hjælp af tandhjulsdrevet 25 og tandkransen 49. De to andre cylindriske stammer 3 og 5 er ligeledes drevet i samme retning H ved hjælp af tandhjulsdrevet 50, akslen 52 samt de tandhjulsdrev og tandkranse, som er anbragt i vendegearhu-sene 53 og 54.30 In the example of assembly shown in full lines in FIG. 3, the transmission shaft 21 drives the second shaft 22 by means of the gears 19 and 20. This rotates in the opposite direction, as indicated by the arrow G. Thus, the transmission shaft 22 drives the cylindrical stem 4 in the direction of the arrow H by also the two other cylindrical stems 3 and 5 are driven in the same direction H by means of the gear drive 50, the shaft 52 and the gears and gears located in the turning gears 53 and 54.

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6 I det tilfælde hvor traktorens kraftudtagsakslen 17 drejer i den modsatte retning af den, som er indikeret med pilen F i fig. 1, er det nødvendigt at gå frem, således som beskrevet herefter med henblik på at bevare den samme rotationsretning H for de cylindriske stammer 3-5.6 In the case where the tractor PTO shaft 17 rotates in the opposite direction to that indicated by the arrow F in FIG. 1, it is necessary to proceed as described hereinafter in order to maintain the same rotation direction H for the cylindrical strains 3-5.

55

Det er nødvendigt at afskrue pladen 29 og trække enheden 18 ud af huset 28. Af hensyn hertil er pladen fordelagtigt forsynet med tre gevindforsynede åbninger 55, hvori skruer kan anbringes. Lige så snart disse kommer i anlæg, mod huset 28's væg, trykker de imod dette og 10 fjerner pladen 29 fra huset. Denne fjernelse frembringer tilbagetrækningen af transmissionsakslernes 21 og 22 ender 23 og 24 respektivt fra kuglelejet 40 og tandhjulsdrevet 25. Når først denne tilbagetrækning er udført, drejes pladen 29 med transmissionsakslerne 21 og 22 180° for at bringe akslen 21 i direkte indgreb med tandhjulsdrevet 25.It is necessary to unscrew the plate 29 and pull the unit 18 out of the housing 28. For this purpose, the plate is advantageously provided with three threaded openings 55 in which screws can be placed. As soon as they come into contact, against the wall of the housing 28, they push against this and 10 remove the plate 29 from the housing. This removal produces the retraction of the ends 23 and 24 of the transmission shafts 21 and 22, respectively, from the ball bearing 40 and the sprocket 25. Once this retraction is performed, the plate 29 with the transmission shafts 21 and 22 is rotated 180 ° to engage the shaft 21 directly with the sprocket 25.

15 I denne nye stilling fastgøres pladen 29 igen på huset 28 ved hjælp af skruerne 30-33. Transmissionakslen 21 indtager således den stilling, der er vist med streg-prik-linier i fig. 3, medens den anden aksel 21 alene er styret i rullelejet 40.In this new position, plate 29 is reattached to housing 28 by means of screws 30-33. Thus, the transmission shaft 21 occupies the position shown by dash-dotted lines in FIG. 3, while the second shaft 21 is guided only in the roller bearing 40.

20 I denne stilling driver transmissionakslen 21 direkte tandhjulsdrevet 25 i den retning, der er indikeret af pilen G i fig. 3. Som følge heraf drives de cylindriske stammer 3-5 ligeledes i retning af pilene H for at få en siderettet skårlægning.20 In this position, the transmission shaft 21 directly drives the gear drive 25 in the direction indicated by the arrow G in FIG. 3. As a result, the cylindrical trunks 3-5 are also driven in the direction of the arrows H for a lateral cutting.

25 Transmissionen ifølge den foreliggende opfindelse gør det ikke alene muligt at bibeholde rotation i én retning for maskinens arbejdsredskaber, uanset om der anvendes kraftudtagsaksler, som drejer i modsatte retninger, men gør det ligeledes muligt at ændre arbejdsredskabernes rotationsretning, således at de roterer i den modsatte retning, selv i 30 det tilfælde, hvor de drives af en kraftudtagsaksel med fast rotationsretning, hvis det ønskes at ændre naturen af det opnåede arbejde, for eksempel for at placere en skår til højre for en traktor i stedet for til venstre for traktoren.The transmission of the present invention not only allows one-way rotation of the machine's working tools to be maintained, regardless of the use of PTO shafts which rotate in opposite directions, but also allows the rotation of the working tools to be rotated in the opposite direction. direction, even in the case where they are driven by a PTO shaft with a fixed rotation direction, if it is desired to change the nature of the work obtained, for example, to place a notch to the right of a tractor instead of to the left of the tractor.

35 Det er også muligt at udstyre andre end den ovenfor beskrevne maskine med en transmission ifølge opfindelsen.It is also possible to equip anyone other than the machine described above with a transmission according to the invention.

Claims

1. Transmission for agricultural machinery, which includes, inter alia, a frame (1) carrying implements (2) which are rotated during work by a drive mechanism, such as a power take-off shaft (17) of a tractor (16), and transmission means, integrated into the machine, consisting of two parallel transmission shafts (21 and 22), each provided with a sprocket (19 and 20) which engage one another on which one of these transmission shafts (21, 22) stands in front, with a gear drive (25) for the implements (2), and wherein one end of one of the transmission shafts (21, 22) may be connected to the drive shaft, characterized in that the transmission shafts (21, 22) and the gears (19 and 20) form a unit capable of being removed by the machine, being rotated 180e about an axis parallel to the transmission shafts, and being reinserted into the machine that each of the transmission shafts has an end (23, 24) which may be connected to a gear drive (25) and that only one of these transmission shafts (21 and 22) has its other end (26) configured to be connected to the drive shaft (27). 20

Transmission according to claim 1, characterized in that the two gears (19 and 20) are approximately identical.

Transmission according to claim 1, characterized in that the two transmission shafts (21 and 22) are mounted on a plate (29) forming a cover.

Transmission according to claim 3, characterized in that the plate (29) is provided with an opening (38) for passing the end (26) of the transmission shaft (21).

Transmission according to claim 3 or 4, characterized in that the plate (29) is provided with two bearing housings (34 and 35) which act as a seat for ball bearings (36 and 37) intended for controlling the shafts 35 (21, and 22).

Transmission according to claim 5, characterized in that the center of each of the bearing housings (34 and 35) is provided on the same horizontal line (E) which is located midway between the fastening screws (30,33) and DK 160527 B 8 (31 , 32) and equally spaced from a vertical line (V) located halfway between the fastening screws (30,31) and (32,33).

Transmission according to claim 1, characterized in that a sliding position is provided between the ends (23 and 24) of the transmission shafts (21 and 22) and the gear drive (25).

Transmission according to any one of the preceding claims, characterized in that it comprises in a manner known per se a bearing housing (39) provided with a ball bearing (40) for controlling the end ( 23 or 24) of the transmission shaft (21 or 22), and a sliding adjustment is provided between the ends (23 and 24) of the transmission shafts (21 and 22) and the ball bearing (40). 15 20 25 30 35