WO2005079552A1 - Discer system - Google Patents

Discer system Download PDF

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Publication number
WO2005079552A1
WO2005079552A1 PCT/FR2005/000100 FR2005000100W WO2005079552A1 WO 2005079552 A1 WO2005079552 A1 WO 2005079552A1 FR 2005000100 W FR2005000100 W FR 2005000100W WO 2005079552 A1 WO2005079552 A1 WO 2005079552A1
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WO
WIPO (PCT)
Prior art keywords
disc
plowing
cup
plow
axis
Prior art date
Application number
PCT/FR2005/000100
Other languages
French (fr)
Inventor
Marcel Dairon
Original Assignee
Etablissements Dairon Marcel
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Filing date
Publication date
Application filed by Etablissements Dairon Marcel filed Critical Etablissements Dairon Marcel
Publication of WO2005079552A1 publication Critical patent/WO2005079552A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B15/00—Elements, tools, or details of ploughs
    • A01B15/16—Discs; Scrapers for cleaning discs; Sharpening attachments

Definitions

  • the present invention relates to a disc plow system intended to be towed behind a towing vehicle.
  • a system comprising a chassis coupled to the towing vehicle, the chassis comprising a beam inclined with respect to the direction of movement of the towing vehicle and at least two convex plowing discs mounted on the inclined beam via respectively two ages of support by being offset laterally and longitudinally.
  • Each plowing disc is rotatably mounted about an axis integral with the corresponding age and inclined relative to the direction of movement of the towing vehicle.
  • Another known drawback of this known system is that the plowing discs exert on the plow while they are working a force component tending to deflect the plow from its rectilinear trajectory parallel to the direction of movement of the towing vehicle and it is therefore extremely difficult to driver of the towing vehicle to correct any deviation in the path of the plow.
  • the present invention aims to eliminate the above drawbacks by proposing a plow system intended to be towed behind a tractor vehicle, comprising a chassis coupled to the tractor vehicle, the chassis comprising a beam inclined relative to the direction of advancement of the towing vehicle, and at least two rounded plowing discs mounted on the inclined beam respectively by means of two support ages being offset laterally and longitudinally, each plowing disc being rotatably mounted about an axis integral with the corresponding age and inclined relative to the direction of movement of the towing vehicle, and which is characterized in that each plowing disc comprises in the center of its concave part a cup secured to the disc coaxially with its axis of rotation and making it possible both to limit the depth working in the ground of the disc and spraying the earth hitting the cup rotating with the disc working the ground when moving the plow so as to prevent the formation of plowing tongues which may adhere to the concave internal face of the disc.
  • the cup comprises a substantially cylindrical part secured to the disc and an end in the form of a spherical cap connected to the cylindrical part by an annular edge rounded outwardly constituting the spraying area of the plowed soil.
  • the cylindrical part of the cup is secured to an annular flange fixed to the bottom of the concave part of the disc by bolts passing through the disc to fix it to its drive hub.
  • Each support age of a plowing disc is fixed to the inclined beam of the chassis by a transverse pivot axis secured to the inclined beam to allow the plowing disc to tilt upwards when it encounters an obstacle so as to avoid to damage the plowing disc.
  • a hydraulic cylinder is interposed between the inclined beam of the chassis and the age to automatically return the plowing disc to its working position after having passed the obstacle.
  • Each support age of a plowing disc includes two rigid twin vertical and longitudinal plates connected at their upper parts to the beam inclined by the transverse pivot axis and the lower ends of which carry a support shaft for the plow disc hub.
  • a longitudinal vertical plate is fixed to the inclined beam being adjacent to one of the two pivoting vertical plates so as to provide lateral reinforcement of the pivoting plate.
  • the frame is in the form of a right triangle whose inclined beam constitutes the hypotenuse and one of the adjacent beam-shaped sides extends longitudinally and carries at least one vertical support substantially in the form of an equilateral triangle which can rotate freely on a transverse axis and three flat discs are mounted with free rotation respectively to the three vertices of the triangular support, two of the three flat discs being partially driven into the ground one behind the other in the direction of advance of the plow so as to maintain the latter following a rectilinear trajectory parallel to the direction of advance of the plow.
  • Each flat disc comprises in its center a cup secured to the disc coaxially with its axis of rotation projecting opposite the longitudinal beam of the chassis and making it possible to limit the depth of penetration into the ground of the flat disc.
  • the rounded plowing discs and the flat side stabilization discs of the plow are of the coulter and serrated type.
  • the cup of each dished plowing disc has a length in the direction of its axis of rotation less than the arrow of the dished plowing disc.
  • the chassis is fixed to the rear of the towing vehicle by a three-point hitching device.
  • FIG. 1 is a perspective view from three rear quarters of the plow system according to the invention
  • Figure 2 is a partial perspective view along arrow II of Figure 1
  • Figure 3 is a side perspective view along III of Figure 1
  • FIG. 4 is a side perspective view along arrow IV of FIG. 1.
  • the reference 1 designates the chassis of a plow intended to be fixed to the rear of a tractor vehicle, not shown, by a conventional three-point hitching device 2a, 2b and 2c.
  • the chassis 1 has a top view substantially in the form of a right triangle whose hypotenuse 3 is constituted by a beam inclined relative to the direction of movement or advance A of the towing vehicle and one of the sides adjacent to the beam 3 is also constituted by a beam 4 parallel to the direction of advance A of this vehicle.
  • the two beams 3, 4 are connected to each other by a cross member 5 constituting the third side of the chassis 1 and extending transversely to the direction of advance A of the towing vehicle.
  • the cross-member 5 of the chassis 1 carries the three yokes 6 forming part of the three-point hitching device of the chassis 1 to the towing vehicle.
  • the inclined beam 3 carries a number of plowing discs 7 in this case three in number, although a different number could be provided.
  • the plowing discs 7 are mounted on the inclined beam 3 by means of three support ages 8 respectively, being offset laterally and longitudinally to the direction of movement of the plow coupled to the towing vehicle.
  • Each plowing disc 7 is of the convex, coulter, crenellated type and is mounted with free rotation around an axis, not shown, attached to the corresponding age 8 and symbolized by the line in dashed lines AA. '.
  • the axis A- A 'of rotation of each disc 7 is inclined relative to the direction of movement of the towing vehicle.
  • the angle of inclination of each axis AA ′ is 40 °.
  • each plowing disc 7 comprises in the center of its concave part, similar to a segment of a circle when viewed from the side, a cup 9 secured to the disc 7 coaxially with its axis of rotation AA ′ projecting along this axis of a determined length making it possible to limit and control the working depth in the ground of the disc 7 as shown in FIG. 2.
  • the distance over which each cup 9 projects from the center of the concave part of the disc 7 is less than the arrow of the segment of the concave part.
  • Each cup 9 comprises a substantially cylindrical part 10 integral with an annular flange 11 for fixing the cup 9 to the bottom of the concave part of the disc 7 and an end 12 in the form of a spherical cap connected to the cylindrical part 10 by an annular edge.
  • externally rounded 13 constituting an area allowing the ground striking the cup 9 to be sprayed when the disc 7 rotates to work the soil during the displacement of the plow so as to prevent the formation of plowing tongues which can adhere to the concave internal face of the disc 7 and, therefore, avoid filling the earth with this disc.
  • Each annular flange 11 is fixed to the bottom of the concave part of the disc 7 by bolts 14 passing through the bottom wall of the disc 7 and a part forming a hub.
  • Each age 8 of support of a plowing disc 7 is fixed to the inclined beam 3 so as to pivot around a transverse axis 16 integral with the beam 3 to allow the tilting up of the disc 7 when it meets a obstacle, such as rocks, residue from stumps, and / or branches, so as to avoid damaging the working teeth 7a of the disc 7, the latter returning to its working position once the obstacle is overcome.
  • Each support age 8 of a plowing disc 7 comprises two rigid vertical and longitudinal twin plates 17 and 18 connected at their upper parts to the inclined beam 3 by the transverse pivot axis 16 and the lower ends of which each carry the support shaft of the hub 15 of the plowing disc 7.
  • the two pivoting plates 17, 18 are fixed to each other by spacers 19 fixed by welding between these plates.
  • the plate 18 has substantially the shape of an inverted L, the small branch of which has its end pivotally mounted on the axis 16.
  • a rigid vertical longitudinal plate 20 is fixed to the beam 3 while being adjacent to the pivoting plate 17 so as to ensure lateral reinforcement of the pivoting plate 17 which undergoes a transverse force component during the plowing of the soil by the discs 7.
  • the plates 17, 18 are fixed to the inclined beam 3 by means of an assembly " '21 forming both a flange for fixing to the beam 3 and an articulation yoke for the plates 17, 18 of the corresponding age (8).
  • Each assembly 21 is formed on the one hand by the reinforcing plate 20 and on the other hand by another rigid longitudinal vertical plate 22 fixed to the inclined beam 3 by means of bolts 23.
  • a double-acting hydraulic cylinder 24 is interposed between the age 8 of support of a plowing disc 7 and the inclined beam 3 so as to automatically return the plowing disc 7 to its working position after the latter has exceeded a obstacle having raised it up around - the pivot axis 16.
  • Each cylinder 24 has its cylinder mounted pivoting about a transverse axis 25 fixed between the two plates 20 and 22 and its rod end pivotally connected to a transverse axis 26 fixed between the two plates 17, 18.
  • this comprises a lateral stabilization device fixed to the longitudinal beam 4 to the opposite plowing discs 7.
  • This device comprises a vertical support 27 of three flat, serrated discs 28, the support 27 having substantially the shape of an equilateral triangle and being able to turn er freely around a transverse axis, not shown, integral with the longitudinal beam 4 and symbolized in phantom by BB 'in FIG. 3.
  • the axis of rotation of the triangular plate 27 is fixed to the beam 4 below this the latter by a fixing flange 28 with parallel vertical plates 28a fixed to the beam 4 on each side thereof by a set of bolts 29 and transverse spacers 30.
  • the three flat discs 28 are mounted with free rotation respectively at the three vertices of the triangular support 27 around transverse axes symbolized in phantom by CC, two of the three flat discs 28 being partially driven into the ground one behind the other in the direction of movement A of the plow so as to maintain the latter following the straight path parallel to the direction of movement A of the plow. Without this lateral stabilization device, the plow would receive a constant thrust due to the force exerted on the plowing discs 7 during the work of the plow and it would then be very difficult for the driver of the tractor vehicle to correct any deviation of the plow from its trajectory normally parallel to the direction of movement A of the tractor vehicle.
  • Each flat disc 28 comprises in its center a cup 31 which may be identical to each cup 9 of a plowing disc 7 and integral with the disc 28 coaxially with its axis of rotation CC by projecting externally opposite the longitudinal beam 4 of the chassis 1.
  • Each cup 31 makes it possible to limit and control the depth of penetration into the ground of the corresponding flat disc 28.
  • the set of three discs 28 pivots around the axis of rotation BB 'of the triangular plate 27 anticlockwise considering the figure 3 so as to bring the upper disc 8 into the partially sunk position, the second disc 28 which was previously sunk into the ground being brought to an inactive upper position.
  • the longitudinal beam 4 could also support a second lateral stabilization device with a rotating triangular plate and three rotary disks on this plate like that described above and mounted in front of or behind the latter.
  • the plow is shown in the figures in the inactive transport position and to ensure its stability at this position, the chassis comprises associated with the longitudinal beam 4 at least one support stand 32 which can be immobilized by a locking screw 33 in a sheath 34 secured by welding to the external face of the beam 4 perpendicular to its longitudinal axis. In the position of use of the plow, the stand 32 is raised upwards through the sheath 34 and locked in this position by the locking screw 33.

Abstract

The invention relates to a discer system. Said system is characterised in that each ploughing disc (7) comprises a cup (9) at the centre of the concave part thereof, said cup being fixed to the disc (7) coaxially to the rotational axis thereof (A-A'), and enabling the earth hitting the cup (9), which rotates with the disc (7) working the ground during the displacement of the discer, to be pulverised, in such a way as to prevent the formation of ploughing tongues that can adhere to the internal concave face of the disc (7). The invention applies to the field of agriculture.

Description

«Système de charrue à disques» "Disc plow system"
La présente invention concerne un système de charrue à disques destiné à être remorqué derrière un véhicule tracteur. On connaît un tel système comprenant un châssis attelé au véhicule tracteur, le châssis comprenant une poutre inclinée par rapport au sens de déplacement du véhicule tracteur et au moins deux disques bombés de labour montés sur la poutre inclinée par l'intermédiaire respectivement de deux âges de support en étant décalés latéralement et longitudinalement . Chaque disque de labour est monté à rotation autour d'un axe solidaire de l'âge correspondant et incliné relativement à la direction de déplacement du véhicule tracteur. Un tel système a pour inconvénient de nécessiter l'utilisation de racleurs fixés au châssis de la charrue pour racler la terre adhérant à la face de travail de chacun des disques de labour. Ce système connu a pour autre inconvénient que les disques de labour exercent a la charrue pendant qu'ils travaillent une composante de force tendant à dévier la charrue de sa trajectoire rectiligne parallèle au sens de déplacement du véhicule tracteur et il est par conséquent extrêmement difficile au conducteur du véhicule tracteur de corriger tout écart de trajectoire de la charrue. La présente invention a pour but d'éliminer les inconvénients , ci-dessus en proposant un système de charrue destiné à être remorqué derrière un véhicule tracteur, comprenant un châssis attelé au véhicule tracteur, le châssis comportant une poutre inclinée par rapport au sens d'avancement du véhicule tracteur, et au moins deux disques bombés de labour montés sur la poutre inclinée par l'intermédiaire respectivement de deux âges de support en étant décalés latéralement et longitudinalement, chaque disque de labour étant monté à rotation autour d'un axe solidaire de l'âge correspondant et incliné relativement à la direction de déplacement du véhicule tracteur, et qui est caractérisé en ce que chaque disque de labour comprend au centre de sa partie concave une coupelle solidaire du disque coaxialement à son axe de rotation et permettant à la fois de limiter la profondeur de travail dans le sol du disque et de pulvériser la terre frappant la coupelle tournant avec le disque travaillant le sol lors du déplacement de la charrue de manière à empêcher la formation de langues de labour pouvant adhérer à la face interne concave du disque . De préférence, la coupelle comprend une partie sensiblement cylindrique solidaire du disque et une extrémité en forme de calotte sphérique raccordée à la partie cylindrique par un bord annulaire arrondi extérieurement constituant la zone de pulvérisation de la terre labourée. Avantageusement, la partie cylindrique de la coupelle est solidaire d'une bride annulaire fixée au fond de la partie concave du disque par des boulons traversant le disque pour le fixer à son moyeu d' entraînement . Chaque âge de support d'un disque de labour est fixé à la poutre inclinée du châssis par un axe de pivotement transversal solidaire de la poutre inclinée pour permettre le basculement vers le haut du disque de labour lorsqu'il rencontre un obstacle de manière à éviter d'abîmer le disque de labour. Un vérin hydraulique est interposé entre la poutre inclinée du châssis et l'âge pour ramener automatiquement le disque de labour à sa position de travail après avoir dépassé l'obstacle. Chaque âge de support d'un disque de labour comprend deux plaques jumelées rigides verticales et longitudinales reliées à leurs parties supérieures à la poutre inclinée par l'axe transversal de pivotement et dont les extrémités inférieures portent un arbre de support du moyeu du disque de labour. Une plaque verticale longitudinale est fixée à la poutre inclinée en étant adjacente à l'une des deux plaques verticales pivotantes de manière à assurer un renforcement latéral de la plaque pivotante. Le châssis est en forme de triangle rectangle dont la poutre inclinée en constitue l'hypoténuse et l'un des côtés adjacents en forme de poutre s'étend longitudinalement et porte au moins un support vertical sensiblement en forme de triangle équilatêral pouvant tourner librement sur un axe transversal et trois disques plats sont montés à rotation libre respectivement aux trois sommets du support triangulaire, deux des trois disques plats étant enfoncés partiellement dans le sol l'un derrière l'autre dans le sens d'avancement de la charrue de manière à maintenir cette dernière suivant une trajectoire rectiligne parallèle au sens d'avancement de la charrue. Chaque disque plat comprend en son centre une coupelle solidaire du disque coaxialement à son axe de rotation en faisant saillie à l'opposé de la poutre longitudinale du châssis et permettant de limiter la profondeur d'enfoncement dans le sol du disque plat. Les disques bombés de labour et les disques plats de stabilisation latérale de la charrue sont du type coutre et crénelés. La coupelle de chaque disque bombé de labour a une longueur en direction de son axe de rotation inférieure à la flèche du disque bombé de labour. Le châssis est fixé à l'arrière du véhicule tracteur par un dispositif d'attelage relevable à trois points . L'invention sera mieux comprise, et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant un mode de réalisation de 1 ' invention et dans lesquels : la figure 1 est une vue en perspective de trois quarts arrière du système de charrue conforme à 1 ' invention ; la figure 2 est une vue partielle en perspective suivant la flèche II de la figure 1 ; la figure 3 est une vue de côté en perspective suivant la III de la figure 1 ; et la figure 4 est une vue en perspective de côté suivant la flèche IV de la figure 1. En se reportant aux figures, la référence 1 désigne le châssis d'une charrue destiné à être fixé à l'arrière d'un véhicule tracteur, non représenté, par un dispositif d'attelage classique relevable à trois points 2a, 2b et 2c. Le châssis 1 présente en vue de dessus sensiblement la forme d'un triangle rectangle dont l'hypoténuse 3 est constitué par une poutre inclinée par rapport au sens de déplacement ou d'avance A du véhicule tracteur et l'un des côtés adjacents à la poutre 3 est également constitué par une poutre 4 parallèle au sens d'avance A de ce véhicule. Les deux poutres 3, 4 sont reliées l'une à l'autre par une traverse 5 constituant le troisième côté du châssis 1 et s 'étendant transversalement au sens d'avance A du véhicule tracteur. La traverse 5 du châssis 1 porte les trois chapes 6 faisant parties du dispositif d'attelage à trois points du châssis 1 au véhicule tracteur. La poutre inclinée 3 porte un certain nombre de disques de labour 7 dans le cas présent au nombre de trois, bien qu'un nombre différent pourrait être prévu. Les disques de labour 7 sont montés sur la poutre inclinée 3 par l'intermédiaire respectivement de trois âges de support 8 en étant décalés latéralement et longitudinalement à la direction de déplacement de la charrue attelée au véhicule tracteur. Chaque disque de labour 7 est du type bombé, coutre, crénelé et est monté à rotation libre autour d'un axe, non représenté, solidaire de l'âge correspondant 8 et symbolisé par la ligne en traits mixtes A-A.'. L'axe A- A' de rotation de chaque disque 7 est incliné relativement à la direction de déplacement du véhicule tracteur. A titre d'exemple, l'angle d'inclinaison de chaque axe A-A' est de 40°. Selon l'invention, chaque disque de labour 7 comprend au centre de sa partie concave, semblable à un segment de cercle lorsque vue de côté, une coupelle 9 solidaire du disque 7 coaxialement à son axe de rotation A-A' en faisant saillie suivant cet axe d'une longueur déterminée permettant de limiter et de contrôler la profondeur de travail dans le sol du disque 7 comme représenté en figure 2. La distance sur laquelle fait saillie chaque coupelle 9 à partir du centre de la partie concave du disque 7 est inférieure à la flèche du segment de la partie concave. Chaque coupelle 9 comprend une partie sensiblement cylindrique 10 solidaire d'une bride annulaire 11 de fixation de la coupelle 9 au fond de la partie concave du disque 7 et une extrémité 12 en forme de calotte sphérique raccordée à la partie cylindrique 10 par un bord annulaire arrondi extérieurement 13 constituant une zone permettant de pulvériser la terre frappant la coupelle 9 lorsque le disque 7 tourne pour travailler le sol lors du déplacement de la charrue de manière à empêcher la formation de langues de labour pouvant adhérer à la face interne concave du disque 7 et, par conséquent, éviter le remplissage de terre de ce disque. Chaque bride annulaire 11 est fixée au fond de la partie concave du disque 7 par des boulons 14 traversant la paroi de fond du disque 7 et une partie formant moyeu 15 située en arrière de la paroi convexe du disque 7 et montée à rotation autour de l'axe A-A'. Chaque âge 8 de support d'un disque de labour 7 est fixé à la poutre inclinée 3 de manière à pivoter autour d'un axe transversal 16 solidaire de la poutre 3 pour permettre le basculement vers le haut du disque 7 lorsqu'il rencontre un obstacle, tel que des roches, des résidus de souches, et/ou des branches, de manière à éviter d'abîmer les dents de travail 7a du disque 7, ce dernier revenant à sa position de travail une fois l'obstacle dépassé. Chaque âge de support 8 d'un disque de labour 7 comprend deux plaques jumelées rigides verticales et longitudinales 17 et 18 reliées à leurs parties supérieures à la poutre inclinée 3 par l'axe transversal de pivotement 16 et dont les extrémités inférieures portent chacune l'arbre de support du moyeu 15 du disque de labour 7. Les deux plaques pivotantes 17, 18 sont fixées l'une à l'autre par des entretoises 19 fixées par soudage entre ces plaques. La plaque 18 présente sensiblement la forme d'un L inversé dont la petite branche a son extrémité montée pivotante sur l'axe 16. Une plaque rigide verticale longitudinale 20 est fixée à la poutre 3 en étant adjacente à la plaque pivotante 17 de manière à assurer un renforcement latéral de la plaque pivotante 17 qui subit une composante de force transversale lors du labour du sol par les disques 7. Les plaques 17, 18 sont fixées à la poutre inclinée 3 par l'intermédiaire d'un ensemble "'21 formant à la fois bride de fixation à la poutre 3 et chape d'articulation des plaques 17, 18 de l'âge correspondant (8) . Chaque ensemble 21 est constitué d'une part par la plaque de renforcement 20 et d'autre part par une autre plaque rigide verticale longitudinale 22 fixée à la poutre inclinée 3 par l'intermédiaire de boulons 23. Un vérin hydraulique à double effet 24 est interposé entre l'âge 8 de support d'un disque de labour 7 et la poutre inclinée 3 de manière à ramener automatiquement le disque de labour 7 à sa position de travail après que ce dernier a dépassé un obstacle l'ayant soulevé vers le haut autour de - l'axe de pivotement 16. Chaque vérin 24 a son cylindre monté pivotant autour d'un axe transversal 25 fixé entre les deux plaques 20 et 22 et son extrémité de tige reliée de manière pivotante à un axe transversal 26 fixé entre les deux plaques 17, 18. Pour maintenir la charrue suivant une trajectoire rectiligne parallèle au sens de déplacement A du véhicule tracteur, celle-ci comprend un dispositif de stabilisation latérale fixé à la poutre longitudinale 4 à l'opposé des disques de labour 7. Ce dispositif comprend un support vertical 27 de trois disques coutre, plats et crénelés 28, le support 27 ayant sensiblement la forme d'un triangle équilatéral et pouvant tourner librement autour d'un axe transversal, non représenté, solidaire de la poutre longitudinale 4 et symbolisé en traits mixtes par B-B' en figure 3. L'axe de rotation de la plaque triangulaire 27 est fixé à la poutre 4 en dessous de cette dernière par une bride de fixation 28 à plaques verticales parallèles 28a fixées à la poutre 4 de chaque côté de celle-ci par un ensemble à boulons 29 et entretoises transversaux 30. Les trois disques plats 28 sont montés à rotation libre respectivement aux trois sommets du support triangulaire 27 autour d'axes transversaux symbolisés en traits mixtes par C-C, deux des trois disques plats 28 étant enfoncés partiellement dans le sol l'un derrière 1 ' autre dans le sens de déplacement A de la charrue de manière à maintenir cette dernière suivant la trajectoire rectiligne parallèle au sens de déplacement A de la charrue. Sans ce dispositif de stabilisation latérale, la charrue recevrait une poussée constante due à la force exercée sur les disques de labour 7 pendant le travail de la charrue et il serait alors très difficile au conducteur du véhicule tracteur de corriger tout écart de la charrue de sa trajectoire normalement parallèle au sens du déplacement A du véhicule tracteur. Chaque disque plat 28 comprend en son centre une coupelle 31 pouvant être identique à chaque coupelle 9 d'un disque de labour 7 et solidaire du disque 28 coaxialement à son axe de rotation C-C en faisant saillie extérieurement à l'opposé de la poutre longitudinale 4 du châssis 1. Chaque coupelle 31 permet de limiter et de contrôler la profondeur d'enfoncement dans le sol du disque plat correspondant 28. En outre, lorsque l'un des disques 28, par exemple le disque avant, rencontre un obstacle, tel que des rochers, lors du déplacement dans le sens A de la charrue, l'ensemble des trois disques 28 pivote autour de l'axe de rotation B-B' de la plaque triangulaire 27 dans le sens contraire des aiguilles d'une montre en considérant la figure 3 de manière à amener le disque supérieur 8 en position d'enfoncement partiel dans le sol, le deuxième disque 28 qui était précédemment enfoncé dans le sol étant amené à une position supérieure inactive . En variante, la poutre longitudinale 4 pourrait également supporter un deuxième dispositif de stabilisation latérale à plaque triangulaire tournante et trois disques rotatifs sur cette plaque comme celui décrit précédemment et monté en avant ou en arrière de ce dernier. La charrue est représentée aux figures en position inactive de transport et pour assurer sa stabilité à cette position, le châssis comporte associée à la poutre longitudinale 4 au moins une béquille d'appui 32 pouvant être immobilisée par une vis de blocage 33 dans un fourreau 34 solidaire par soudage de la face externe de la poutre 4 perpendiculairement à son axe longitudinal . En position d'utilisation de la charrue, la béquille 32 est remontée vers le haut au travers de fourreau 34 et bloquée à cette position par la vis de blocage 33. The present invention relates to a disc plow system intended to be towed behind a towing vehicle. Such a system is known comprising a chassis coupled to the towing vehicle, the chassis comprising a beam inclined with respect to the direction of movement of the towing vehicle and at least two convex plowing discs mounted on the inclined beam via respectively two ages of support by being offset laterally and longitudinally. Each plowing disc is rotatably mounted about an axis integral with the corresponding age and inclined relative to the direction of movement of the towing vehicle. The drawback of such a system is that it requires the use of scrapers fixed to the frame of the plow to scrape the soil adhering to the working face of each of the plowing discs. Another known drawback of this known system is that the plowing discs exert on the plow while they are working a force component tending to deflect the plow from its rectilinear trajectory parallel to the direction of movement of the towing vehicle and it is therefore extremely difficult to driver of the towing vehicle to correct any deviation in the path of the plow. The present invention aims to eliminate the above drawbacks by proposing a plow system intended to be towed behind a tractor vehicle, comprising a chassis coupled to the tractor vehicle, the chassis comprising a beam inclined relative to the direction of advancement of the towing vehicle, and at least two rounded plowing discs mounted on the inclined beam respectively by means of two support ages being offset laterally and longitudinally, each plowing disc being rotatably mounted about an axis integral with the corresponding age and inclined relative to the direction of movement of the towing vehicle, and which is characterized in that each plowing disc comprises in the center of its concave part a cup secured to the disc coaxially with its axis of rotation and making it possible both to limit the depth working in the ground of the disc and spraying the earth hitting the cup rotating with the disc working the ground when moving the plow so as to prevent the formation of plowing tongues which may adhere to the concave internal face of the disc. Preferably, the cup comprises a substantially cylindrical part secured to the disc and an end in the form of a spherical cap connected to the cylindrical part by an annular edge rounded outwardly constituting the spraying area of the plowed soil. Advantageously, the cylindrical part of the cup is secured to an annular flange fixed to the bottom of the concave part of the disc by bolts passing through the disc to fix it to its drive hub. Each support age of a plowing disc is fixed to the inclined beam of the chassis by a transverse pivot axis secured to the inclined beam to allow the plowing disc to tilt upwards when it encounters an obstacle so as to avoid to damage the plowing disc. A hydraulic cylinder is interposed between the inclined beam of the chassis and the age to automatically return the plowing disc to its working position after having passed the obstacle. Each support age of a plowing disc includes two rigid twin vertical and longitudinal plates connected at their upper parts to the beam inclined by the transverse pivot axis and the lower ends of which carry a support shaft for the plow disc hub. A longitudinal vertical plate is fixed to the inclined beam being adjacent to one of the two pivoting vertical plates so as to provide lateral reinforcement of the pivoting plate. The frame is in the form of a right triangle whose inclined beam constitutes the hypotenuse and one of the adjacent beam-shaped sides extends longitudinally and carries at least one vertical support substantially in the form of an equilateral triangle which can rotate freely on a transverse axis and three flat discs are mounted with free rotation respectively to the three vertices of the triangular support, two of the three flat discs being partially driven into the ground one behind the other in the direction of advance of the plow so as to maintain the latter following a rectilinear trajectory parallel to the direction of advance of the plow. Each flat disc comprises in its center a cup secured to the disc coaxially with its axis of rotation projecting opposite the longitudinal beam of the chassis and making it possible to limit the depth of penetration into the ground of the flat disc. The rounded plowing discs and the flat side stabilization discs of the plow are of the coulter and serrated type. The cup of each dished plowing disc has a length in the direction of its axis of rotation less than the arrow of the dished plowing disc. The chassis is fixed to the rear of the towing vehicle by a three-point hitching device. The invention will be better understood, and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the drawings. attached diagrams given solely by way of example illustrating an embodiment of the invention and in which: FIG. 1 is a perspective view from three rear quarters of the plow system according to the invention; Figure 2 is a partial perspective view along arrow II of Figure 1; Figure 3 is a side perspective view along III of Figure 1; and FIG. 4 is a side perspective view along arrow IV of FIG. 1. With reference to the figures, the reference 1 designates the chassis of a plow intended to be fixed to the rear of a tractor vehicle, not shown, by a conventional three-point hitching device 2a, 2b and 2c. The chassis 1 has a top view substantially in the form of a right triangle whose hypotenuse 3 is constituted by a beam inclined relative to the direction of movement or advance A of the towing vehicle and one of the sides adjacent to the beam 3 is also constituted by a beam 4 parallel to the direction of advance A of this vehicle. The two beams 3, 4 are connected to each other by a cross member 5 constituting the third side of the chassis 1 and extending transversely to the direction of advance A of the towing vehicle. The cross-member 5 of the chassis 1 carries the three yokes 6 forming part of the three-point hitching device of the chassis 1 to the towing vehicle. The inclined beam 3 carries a number of plowing discs 7 in this case three in number, although a different number could be provided. The plowing discs 7 are mounted on the inclined beam 3 by means of three support ages 8 respectively, being offset laterally and longitudinally to the direction of movement of the plow coupled to the towing vehicle. Each plowing disc 7 is of the convex, coulter, crenellated type and is mounted with free rotation around an axis, not shown, attached to the corresponding age 8 and symbolized by the line in dashed lines AA. '. The axis A- A 'of rotation of each disc 7 is inclined relative to the direction of movement of the towing vehicle. By way of example, the angle of inclination of each axis AA ′ is 40 °. According to the invention, each plowing disc 7 comprises in the center of its concave part, similar to a segment of a circle when viewed from the side, a cup 9 secured to the disc 7 coaxially with its axis of rotation AA ′ projecting along this axis of a determined length making it possible to limit and control the working depth in the ground of the disc 7 as shown in FIG. 2. The distance over which each cup 9 projects from the center of the concave part of the disc 7 is less than the arrow of the segment of the concave part. Each cup 9 comprises a substantially cylindrical part 10 integral with an annular flange 11 for fixing the cup 9 to the bottom of the concave part of the disc 7 and an end 12 in the form of a spherical cap connected to the cylindrical part 10 by an annular edge. externally rounded 13 constituting an area allowing the ground striking the cup 9 to be sprayed when the disc 7 rotates to work the soil during the displacement of the plow so as to prevent the formation of plowing tongues which can adhere to the concave internal face of the disc 7 and, therefore, avoid filling the earth with this disc. Each annular flange 11 is fixed to the bottom of the concave part of the disc 7 by bolts 14 passing through the bottom wall of the disc 7 and a part forming a hub. 15 located behind the convex wall of the disc 7 and mounted for rotation about the axis AA ′. Each age 8 of support of a plowing disc 7 is fixed to the inclined beam 3 so as to pivot around a transverse axis 16 integral with the beam 3 to allow the tilting up of the disc 7 when it meets a obstacle, such as rocks, residue from stumps, and / or branches, so as to avoid damaging the working teeth 7a of the disc 7, the latter returning to its working position once the obstacle is overcome. Each support age 8 of a plowing disc 7 comprises two rigid vertical and longitudinal twin plates 17 and 18 connected at their upper parts to the inclined beam 3 by the transverse pivot axis 16 and the lower ends of which each carry the support shaft of the hub 15 of the plowing disc 7. The two pivoting plates 17, 18 are fixed to each other by spacers 19 fixed by welding between these plates. The plate 18 has substantially the shape of an inverted L, the small branch of which has its end pivotally mounted on the axis 16. A rigid vertical longitudinal plate 20 is fixed to the beam 3 while being adjacent to the pivoting plate 17 so as to ensure lateral reinforcement of the pivoting plate 17 which undergoes a transverse force component during the plowing of the soil by the discs 7. The plates 17, 18 are fixed to the inclined beam 3 by means of an assembly " '21 forming both a flange for fixing to the beam 3 and an articulation yoke for the plates 17, 18 of the corresponding age (8). Each assembly 21 is formed on the one hand by the reinforcing plate 20 and on the other hand by another rigid longitudinal vertical plate 22 fixed to the inclined beam 3 by means of bolts 23. A double-acting hydraulic cylinder 24 is interposed between the age 8 of support of a plowing disc 7 and the inclined beam 3 so as to automatically return the plowing disc 7 to its working position after the latter has exceeded a obstacle having raised it up around - the pivot axis 16. Each cylinder 24 has its cylinder mounted pivoting about a transverse axis 25 fixed between the two plates 20 and 22 and its rod end pivotally connected to a transverse axis 26 fixed between the two plates 17, 18. To maintain the plow along a rectilinear trajectory parallel to the direction of movement A of the towing vehicle, this comprises a lateral stabilization device fixed to the longitudinal beam 4 to the opposite plowing discs 7. This device comprises a vertical support 27 of three flat, serrated discs 28, the support 27 having substantially the shape of an equilateral triangle and being able to turn er freely around a transverse axis, not shown, integral with the longitudinal beam 4 and symbolized in phantom by BB 'in FIG. 3. The axis of rotation of the triangular plate 27 is fixed to the beam 4 below this the latter by a fixing flange 28 with parallel vertical plates 28a fixed to the beam 4 on each side thereof by a set of bolts 29 and transverse spacers 30. The three flat discs 28 are mounted with free rotation respectively at the three vertices of the triangular support 27 around transverse axes symbolized in phantom by CC, two of the three flat discs 28 being partially driven into the ground one behind the other in the direction of movement A of the plow so as to maintain the latter following the straight path parallel to the direction of movement A of the plow. Without this lateral stabilization device, the plow would receive a constant thrust due to the force exerted on the plowing discs 7 during the work of the plow and it would then be very difficult for the driver of the tractor vehicle to correct any deviation of the plow from its trajectory normally parallel to the direction of movement A of the tractor vehicle. Each flat disc 28 comprises in its center a cup 31 which may be identical to each cup 9 of a plowing disc 7 and integral with the disc 28 coaxially with its axis of rotation CC by projecting externally opposite the longitudinal beam 4 of the chassis 1. Each cup 31 makes it possible to limit and control the depth of penetration into the ground of the corresponding flat disc 28. In addition, when one of the discs 28, for example the front disc, encounters an obstacle, such as rocks, when moving in direction A of the plow, the set of three discs 28 pivots around the axis of rotation BB 'of the triangular plate 27 anticlockwise considering the figure 3 so as to bring the upper disc 8 into the partially sunk position, the second disc 28 which was previously sunk into the ground being brought to an inactive upper position. As a variant, the longitudinal beam 4 could also support a second lateral stabilization device with a rotating triangular plate and three rotary disks on this plate like that described above and mounted in front of or behind the latter. The plow is shown in the figures in the inactive transport position and to ensure its stability at this position, the chassis comprises associated with the longitudinal beam 4 at least one support stand 32 which can be immobilized by a locking screw 33 in a sheath 34 secured by welding to the external face of the beam 4 perpendicular to its longitudinal axis. In the position of use of the plow, the stand 32 is raised upwards through the sheath 34 and locked in this position by the locking screw 33.

Claims

REVENDICATIONS
1. Système de charrue destiné à être remorqué derrière un véhicule tracteur, comprenant un châssis (1) attelé au véhicule tracteur et comportant une poutre (3) inclinée par rapport au sens d'avancement (A) du véhicule tracteur, et au moins deux disques bombés de labour (7) montés sur la poutre inclinée (3) par l'intermédiaire respectivement de deux âges de support (8) en étant décalés latéralement et longitudinalement, chaque disque de labour (7) étant monté à rotation autour d'un axe solidaire de l'âge correspondant (8) et incliné relativement à la direction de déplacement du véhicule tracteur, caractérisé en ce que chaque disque de labour (7) comprend au centre de sa partie concave une coupelle (9) solidaire du disque (7) coaxialement à son axe de rotation et permettant à la fois de limiter la profondeur de travail dans le sol du disque (7) et de pulvériser la terre frappant la coupelle (9) tournant avec le disque (7) travaillant le sol lors du déplacement de la charrue de manière à empêcher la formation de langues de labour pouvant adhérer à la face interne concave du disque (7) . 1. Plow system intended to be towed behind a towing vehicle, comprising a chassis (1) coupled to the towing vehicle and comprising a beam (3) inclined with respect to the direction of advance (A) of the towing vehicle, and at least two convex plowing discs (7) mounted on the inclined beam (3) respectively via two support ages (8) being offset laterally and longitudinally, each plowing disc (7) being rotatably mounted around a axis integral with the corresponding age (8) and inclined relative to the direction of movement of the towing vehicle, characterized in that each plowing disc (7) comprises in the center of its concave part a cup (9) integral with the disc (7 ) coaxial with its axis of rotation and making it possible both to limit the working depth in the ground of the disc (7) and to spray the earth striking the cup (9) rotating with the disc (7) working the ground during the unfolding acement of the plow so as to prevent the formation of plowing tongues which can adhere to the concave internal face of the disc (7).
2. Système selon la revendication 1, caractérisé en ce que la coupelle (9) comprend une partie sensiblement cylindrique (10) solidaire du disque (7) et une extrémité en forme de calotte sphérique (12) raccordée à la partie cylindrique (10) par un bord annulaire arrondi extérieurement (13) constituant la zone de pulvérisation de la terre labourée. 2. System according to claim 1, characterized in that the cup (9) comprises a substantially cylindrical part (10) integral with the disc (7) and one end in the form of a spherical cap (12) connected to the cylindrical part (10) by an externally rounded annular edge (13) constituting the area for spraying the plowed soil.
3. Système selon la revendication 2, caractérisé en ce que la partie cylindrique (10) de la coupelle (9) est solidaire d'une bride annulaire fixée au fond de la partie concave du disque (7) par des boulons (14) traversant le disque (7) pour le fixer à son moyeu d'entraînement (15). 3. System according to claim 2, characterized in that the cylindrical part (10) of the cup (9) is integral with an annular flange fixed to the bottom of the concave part of the disc (7) by bolts (14) passing through the disc (7) to fix it to its drive hub (15).
4. Système selon l'une des revendications précédentes, caractérisé en ce que chaque âge (8) de support d'un disque de labour (7) est fixé à la poutre inclinée (3) du châssis (1) par un axe de pivotement transversal (16) solidaire de la poutre inclinée (3) pour permettre le basculement vers le haut du disque de labour (7) lorsqu'il rencontre un obstacle de manière à éviter d'abîmer le disque de labour (7). 4. System according to one of the preceding claims, characterized in that each age (8) of support of a plowing disc (7) is fixed to the inclined beam (3) of the frame (1) by a transverse pivot axis (16) integral with the inclined beam (3) to allow the tilting up of the disc plowing (7) when it encounters an obstacle so as to avoid damaging the plowing disc (7).
5. Système selon la revendication 4, caractérisé en ce qu'un vérin hydraulique (24) est interposé entre la poutre inclinée (3) du châssis (1) et l'âge (8) pour ramener automatiquement le disque de labour (7) à sa position de travail après avoir dépassé l'obstacle. 5. System according to claim 4, characterized in that a hydraulic cylinder (24) is interposed between the inclined beam (3) of the frame (1) and the age (8) to automatically bring back the plowing disc (7) to its working position after passing the obstacle.
6. Système selon la revendication 4 ou 5, caractérisé en ce que chaque âge (8) de support d'un disque de labour (7) comprend deux plaques jumelées rigides verticales et longitudinales (17,18) reliées à leurs parties supérieures à la poutre inclinée (3) par l'axe transversal de pivotement (16) et dont les extrémités inférieures portent un arbre de support du moyeu (15) du disque de labour (7) . 6. System according to claim 4 or 5, characterized in that each age (8) for supporting a plowing disc (7) comprises two rigid vertical and longitudinal twin plates (17,18) connected to their upper parts to the beam inclined (3) by the transverse pivot axis (16) and the lower ends of which carry a hub support shaft (15) of the plowing disc (7).
7. Système selon la revendication 6, caractérisé en ce qu'une plaque verticale longitudinale (20) est fixée à la poutre inclinée (3) en étant adjacente à l'une des deux plaques verticales pivotantes (17) de manière à assurer un renforcement latéral de la plaque pivotante (17) . 7. System according to claim 6, characterized in that a longitudinal vertical plate (20) is fixed to the inclined beam (3) being adjacent to one of the two pivoting vertical plates (17) so as to provide reinforcement side of the pivoting plate (17).
8. Système selon l'une des revendications précédentes, caractérisé en ce que le châssis (1) est en forme de triangle rectangle dont la poutre inclinée (3) en constitue l'hypoténuse et l'un (4) des côtés adjacents en forme de poutre s'étend longitudinalement et porte un au moins un support vertical (27) sensiblement en forme de triangle équilatéral pouvant tourner librement sur un axe transversal et en ce que trois disques plats (28) sont montés à rotation libre respectivement aux trois sommets du support triangulaire (17) , deux des trois disques plats (28) étant enfoncés partiellement dans le sol l'un derrière l'autre dans le sens d'avancement (A) de la ' charrue de manière à maintenir cette dernière suivant une trajectoire rectiligne parallèle au sens d'avancement de la charrue. 8. System according to one of the preceding claims, characterized in that the frame (1) is in the form of a right triangle whose inclined beam (3) constitutes the hypotenuse and one (4) of the adjacent sides in form beam extends longitudinally and carries at least one vertical support (27) substantially in the shape of an equilateral triangle which can rotate freely on a transverse axis and in that three flat discs (28) are mounted with free rotation respectively at the three vertices of the triangular support (17), two of the three flat discs (28) being partially driven into the ground one behind the other in the direction of travel (A) of 'plow so as to maintain the latter in a rectilinear path parallel to the direction of advance of the plow.
9. Système selon la revendication 8, caractérisé en ce que chaque disque plat (28) comprend en son centre une coupelle (31) solidaire du disque (28) coaxialement à son axe de rotation en faisant saillie à l'opposé de la poutre longitudinale (4) du châssis (1) et permettant de limiter la profondeur d'enfoncement dans le sol du disque plat (28) . 9. System according to claim 8, characterized in that each flat disc (28) comprises in its center a cup (31) integral with the disc (28) coaxially with its axis of rotation projecting opposite the longitudinal beam (4) of the chassis (1) and making it possible to limit the depth of penetration into the ground of the flat disc (28).
10. Système selon l'une des revendications précédentes, caractérisé en ce que les disques bombés de labour (7) et les disques plats (28) de stabilisation latérale de la charrue sont du type coutre et crénelés. 10. System according to one of the preceding claims, characterized in that the convex plowing discs (7) and the flat discs (28) for lateral stabilization of the plow are of the coulter and crenellated type.
11. Système selon l'une des revendications précédentes, caractérisé en ce que la coupelle (9) de chaque disque bombé de labour (7) a une longueur en direction de son axe de rotation inférieure à la flèche du disque bombé de labour (7) . 11. System according to one of the preceding claims, characterized in that the cup (9) of each dished plowing disc (7) has a length in the direction of its axis of rotation less than the arrow of the dished plowing disc (7 ).
12. Système selon l'une des revendications précédentes, caractérisé en ce que le châssis (1) est fixé à l'arrière du véhicule tracteur par un dispositif d'attelage relevable à trois points. 12. System according to one of the preceding claims, characterized in that the chassis (1) is fixed to the rear of the tractor vehicle by a three-point hitching device.
PCT/FR2005/000100 2004-01-20 2005-01-17 Discer system WO2005079552A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0400506A FR2865100B1 (en) 2004-01-20 2004-01-20 DISC PLOW SYSTEM.
FR0400506 2004-01-20

Publications (1)

Publication Number Publication Date
WO2005079552A1 true WO2005079552A1 (en) 2005-09-01

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PCT/FR2005/000100 WO2005079552A1 (en) 2004-01-20 2005-01-17 Discer system

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FR (1) FR2865100B1 (en)
WO (1) WO2005079552A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676526A (en) * 1951-02-09 1954-04-27 John J Dodson Furrow wheel
DE1022826B (en) * 1953-12-28 1958-01-16 David Brown Tractors Engineeri Mounted disc plow
US2849261A (en) * 1956-02-20 1958-08-26 Massey Ferguson Inc Disc bearing
DE3541438A1 (en) * 1985-11-23 1987-05-27 Konrad Hendlmeier Plough body for ground-working appliances
US6260632B1 (en) * 1998-02-27 2001-07-17 Bourgault Industries Ltd. Coulter assembly with an inside floating scraper assembly
EP1300060A1 (en) * 2001-10-02 2003-04-09 Lemken GmbH & Co. KG Soil working tool

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2676526A (en) * 1951-02-09 1954-04-27 John J Dodson Furrow wheel
DE1022826B (en) * 1953-12-28 1958-01-16 David Brown Tractors Engineeri Mounted disc plow
US2849261A (en) * 1956-02-20 1958-08-26 Massey Ferguson Inc Disc bearing
DE3541438A1 (en) * 1985-11-23 1987-05-27 Konrad Hendlmeier Plough body for ground-working appliances
US6260632B1 (en) * 1998-02-27 2001-07-17 Bourgault Industries Ltd. Coulter assembly with an inside floating scraper assembly
EP1300060A1 (en) * 2001-10-02 2003-04-09 Lemken GmbH & Co. KG Soil working tool

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FR2865100B1 (en) 2006-05-12

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