EP1914506B1 - Mine-clearing plough - Google Patents

Mine-clearing plough Download PDF

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Publication number
EP1914506B1
EP1914506B1 EP07291260A EP07291260A EP1914506B1 EP 1914506 B1 EP1914506 B1 EP 1914506B1 EP 07291260 A EP07291260 A EP 07291260A EP 07291260 A EP07291260 A EP 07291260A EP 1914506 B1 EP1914506 B1 EP 1914506B1
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Prior art keywords
arms
mine
plough
clearance
teeth
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EP07291260A
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German (de)
French (fr)
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EP1914506A1 (en
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Gérald Perrin
Emmanuel Debize
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Nexter Systems SA
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Nexter Systems SA
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H11/00—Defence installations; Defence devices
    • F41H11/12—Means for clearing land minefields; Systems specially adapted for detection of landmines
    • F41H11/16—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles
    • F41H11/20—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with ground-penetrating elements, e.g. with means for removing buried landmines from the soil
    • F41H11/24—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with ground-penetrating elements, e.g. with means for removing buried landmines from the soil the elements being ploughs

Abstract

The plough (1) has scarifying teeth (3) integrated to an upper frame, and a mine evacuation unit supported by a lower arm, where the unit is in the form of evacuation arms (4). The arms are moved between the teeth to carry out a raking of a surface between the teeth, where each arm is moved between two successive teeth. The movement of each arm with respect to the plough is followed in a plane having an inclination in the order of 20 degrees with respect to a displacement direction of the plough.

Description

Le secteur technique de la présente invention est celui des dispositifs de déminage d'un terrain et plus particulièrement des charrues de déminage.The technical sector of the present invention is that of demining devices of a field and more particularly of demining plows.

L'utilisation actuelle des charrues de déminage de surface s'effectue par le maintien d'une charrue au ras du sol par une interface hydraulique portée par un véhicule tel un tracteur ou un véhicule blindé. La charrue est disposée à l'avant du véhicule et comporte des dents de scarification pour l'extraction des mines et une lame d'évacuation des mines. On pourra notamment se référer au brevet US5198608 qui décrit une telle charrue.The current use of surface demolition plows is through the maintenance of a plow at ground level by a hydraulic interface carried by a vehicle such as a tractor or an armored vehicle. The plow is located at the front of the vehicle and has scarification teeth for mine extraction and a mine clearance blade. In particular, we can refer to US5198608 who describes such a plow.

Un inconvénient majeur de ce type de charrue réside dans le fait que la lame d'évacuation des mines évacue également une partie de la terre retournée par les dents de scarification, ce qui génère un bourrelet de terre dont le déplacement nécessite un effort de poussée important pour le véhicule de déminage.A major disadvantage of this type of plow lies in the fact that the discharge blade of the mines also removes part of the earth returned by the scarification teeth, which generates a bead of earth whose displacement requires a significant thrust force for the demining vehicle.

Le but de la présente invention est de fournir une charrue de déminage ne générant pas de bourrelet de terre.The object of the present invention is to provide a demining plow not generating a bead of earth.

L'invention a donc pour objet une charrue de déminage du type comportant un bâti, des dents de scarification fixes solidaires du bâti et un moyen d'évacuation des mines, caractérisée en ce que le moyen d'évacuation des mines se présente sous la forme d'au moins un groupe de bras d'évacuation qui se déplacent entre les dents de scarification afin d'effectuer un ratissage de la surface à déminer entre les dents, chaque groupe de bras circulant de l'arrière vers l'avant de la charrue, chaque groupe de bras étant solidaire d'une chaîne transporteuse qui est montée rotative entre deux pignons et entraînée par un moyen moteur, chaque bras d'évacuation se déplaçant entre deux dents de scarification consécutives, le mouvement de chaque bras d'évacuation par rapport à la charrue se situant dans un plan (P) présentant une inclinaison (α) comprise entre 0° et 60° par rapport à une direction (D) de déplacement de la charrue.The subject of the invention is therefore a demining plow of the type comprising a frame, fixed scarification teeth integral with the frame and means for evacuating the mines, characterized in that the means for evacuating the mines is in the form of at least one group of evacuation arms that move between the scarification teeth in order to rake the surface to be demined between the teeth, each group of arms flowing from the rear to the front of the plow each arm group being integral with a conveyor chain which is rotatably mounted between two gears and driven by a motor means, each exhaust arm moving between two consecutive scarification teeth, the movement of each exhaust arm relative to to the plow lying in a plane (P) having an inclination (α) between 0 ° and 60 ° relative to a direction (D) of movement of the plow.

Selon une caractéristique de l'invention, l'inclinaison (α) du plan (P) de déplacement des bras par rapport à la direction (D) de déplacement de la charrue est de l'ordre de 20°.According to a feature of the invention, the inclination (α) of the plane (P) of movement of the arms relative to the direction (D) of movement of the plow is of the order of 20 °.

Selon une autre caractéristique de l'invention, la charrue comprend une chaîne transporteuse interposée entre chaque dent de scarification et les bras d'évacuation portés par une chaîne transporteuse sont décalés par rapport aux bras portés par une chaîne transporteuse voisine de telle façon que les bras entrent dans le sol puis sortent du sol les uns après les autres.According to another characteristic of the invention, the plow comprises a conveyor chain interposed between each scarification tooth and the evacuation arms carried by a conveyor chain are offset relative to the arms carried by a neighboring conveyor chain so that the arms enter the soil and then leave the soil one after the other.

Selon une autre caractéristique de l'invention, la charrue comprend en dessous de chaque chaîne transporteuse une paire de tiges qui assurent le guidage et l'appui des bras.According to another characteristic of the invention, the plow comprises below each conveyor chain a pair of rods which guide and support the arms.

Selon une autre caractéristique de l'invention, chaque bras d'évacuation comporte à son extrémité une dent d'évacuation destinée à pénétrer dans le sol et à faciliter la préhension de la mine.According to another characteristic of the invention, each discharge arm has at its end a discharge tooth intended to penetrate into the ground and facilitate the gripping of the mine.

Selon une autre caractéristique de l'invention, chaque dent d'évacuation présente un angle de 90° à 145° par rapport au bras d'évacuation.According to another characteristic of the invention, each discharge tooth has an angle of 90 ° to 145 ° relative to the exhaust arm.

Selon une autre caractéristique de l'invention, chaque dent d'évacuation présente un bord d'attaque en biseau, orienté vers l'extérieur de la charrue afin de faciliter l'évacuation de la mine vers l'extérieur de la charrue.According to another characteristic of the invention, each evacuation tooth has a beveled leading edge, oriented towards the outside of the plow to facilitate the evacuation of the mine to the outside of the plow.

Selon une autre caractéristique de l'invention, la charrue comporte au moins un patin de glissement, et ce patin de glissement est solidaire d'un mât de longueur réglable et permettant de régler la profondeur de travail des dents de scarification.According to another characteristic of the invention, the plow comprises at least one sliding pad, and this sliding pad is integral with a mast of adjustable length and for adjusting the working depth of the scarification teeth.

La charrue de déminage comportera par ailleurs un moyen permettant de régler la position verticale des moyens d'évacuation par rapport aux dents de scarification.The demining plow will furthermore comprise means for adjusting the vertical position of the evacuation means with respect to the scarification teeth.

Un tout premier avantage du dispositif selon l'invention réside dans l'absence de lame d'évacuation créant un bourrelet de terre, ce qui nécessite ainsi un effort de poussée moins important.A first advantage of the device according to the invention lies in the absence of a discharge blade creating a bead of earth, which thus requires a lower thrust force.

Un autre avantage réside dans la possibilité de disposer la charrue aussi bien à l'avant qu'à l'arrière d'un véhicule.Another advantage lies in the possibility of arranging the plow both at the front and at the rear of a vehicle.

Un autre avantage réside dans la possibilité de réglage de la profondeur d'enfoncement des dents de scarification.Another advantage lies in the possibility of adjustment the depth of penetration of the scarification teeth.

D'autres caractéristiques, détails et avantages de l'invention ressortiront plus clairement de la description donnée ci-après à titre indicatif en relation avec des dessins dans lesquels:

  • la figure 1 représente en perspective une vue générale d'une charrue selon l'invention,
  • la figure 2 est une vue détaillée illustrant un exemple de réalisation des bras d'évacuation,
  • la figure 3 est une vue de dessus d'une charrue selon l'invention,
Other characteristics, details and advantages of the invention will emerge more clearly from the description given below as an indication in relation to drawings in which:
  • the figure 1 represents in perspective a general view of a plow according to the invention,
  • the figure 2 is a detailed view illustrating an embodiment of the exhaust arms,
  • the figure 3 is a top view of a plow according to the invention,

La figure 1 représente une charrue 1 de déminage selon l'invention. La charrue comporte un châssis 2 sur lequel sont fixés un patin 5 de glissement (par l'intermédiaire d'une potence 11), des dents 3 de scarification, un moyen 4 d'évacuation des mines et un moteur 7 permettant d'actionner le moyen 4 d'évacuation des mines.The figure 1 represents a plow 1 demining according to the invention. The plow comprises a frame 2 on which are fixed a sliding shoe 5 (by means of a bracket 11), scarification teeth 3, a means 4 for discharging the mines and a motor 7 for actuating the machine. average 4 of mine evacuation.

Le châssis 2 comporte un bâti supérieur 19 et un bâti inférieur 9 dont l'écartement peut être réglé au moyen de deux actionneurs 20 (par exemple des vérins hydrauliques). Quatre colonnes 10 sont solidaires du bâti inférieur 9 et assurent le guidage du bâti supérieur lors du réglage de l'écartement. Les dents 3 de scarification et le patin 5 de glissement sont solidaires du bâti supérieur 19.The frame 2 comprises an upper frame 19 and a lower frame 9 whose spacing can be adjusted by means of two actuators 20 (for example hydraulic cylinders). Four columns 10 are integral with the lower frame 9 and provide guidance of the upper frame when adjusting the spacing. The scarification teeth 3 and the sliding shoe 5 are integral with the upper frame 19.

Le patin 5 de glissement est fixé au bâti supérieur 19 au moyen de la potence 11 qui comporte un mât vertical 11a qui est réglable en hauteur, par exemple au moyen d'un vérin et/ou de tubes concentriques solidarisables par des goupilles. Avantageusement, le réglage en hauteur du patin 5 de glissement permet de régler l'enfoncement dans le sol des dents 3 de scarification.The sliding shoe 5 is fixed to the upper frame 19 by means of the bracket 11 which comprises a vertical mast 11a which is adjustable in height, for example by means of a jack and / or concentric tubes secured by pins. Advantageously, the height adjustment of the sliding shoe 5 makes it possible to adjust the insertion into the ground of the scarification teeth 3.

Le bâti supérieur comporte également des logements 16 destinés à recevoir des barres de remorquage (non représentées). Le moyen 4 d'évacuation des mines est supporté par le bâti inférieur 9. Le moyen 4 d'évacuation des mines se présente sous la forme de bras 4 portés par des chaînes transporteuses 8 parallèles les unes aux autres et interposées entre chaque dent 3 de scarification.The upper frame also includes housings 16 for receiving tow bars (not shown). The means 4 for discharging the mines is supported by the lower frame 9. The means 4 for discharging the mines is in the form of arms 4 carried by conveyor chains 8 parallel to each other and interposed between each tooth 3 of scarification.

D'une manière générale, le moyen d'évacuation comprend au moins un groupe de bras 4 qui est solidaire d'une chaîne transporteuse.In general, the evacuation means comprises at least one arm group 4 which is integral with a conveyor chain.

Chaque chaîne engrène sur deux pignons 17, 21, un pignon 17 est solidaire d'un axe avant 6 horizontal et l'autre pignon 21 est solidaire d'un axe arrière 22. Un moteur 7 entraîne en mouvement le moyen 4 d'évacuation des mines par l'intermédiaire d'une chaîne d'entraînement 18. La chaîne d'entraînement 18 entraîne ici l'axe arrière 22 au moyen d'un pignon (non représenté) solidaire de cet axe. Alternativement on pourrait concevoir une charrue dans laquelle la chaîne 18 entraînerait l'axe avant 6.Each chain meshes with two pinions 17, 21, a pinion 17 is integral with a horizontal front axis 6 and the other pinion 21 is integral with a rear axle 22. A motor 7 drives in motion the means 4 for evacuating the The driving chain 18 here drives the rear axle 22 by means of a pinion (not shown) integral with this axis. Alternatively one could conceive a plow in which the chain 18 would drive the front axle 6.

Une chaîne transporteuse 8 supportant au moins un bras 4 est disposée entre chaque dent 3 de scarification. Dans cet exemple de réalisation, chaque chaîne 8 porte un groupe de quatre bras 4 régulièrement écartés les uns des autres.A conveyor chain 8 supporting at least one arm 4 is disposed between each scarification tooth 3. In this embodiment, each chain 8 carries a group of four arms 4 regularly spaced from each other.

La figure 2 illustre plus particulièrement un exemple de réalisation et de disposition du moyen 4 d'évacuation des mines. Les chaînes transporteuses 8 sur lesquelles sont fixés les bras 4 d'évacuation engrènent sur les pignons 17 solidaires de l'axe avant 6 horizontal. Des tiges 14 de guidage sont disposées de part et d'autre de la trajectoire de chaque bras 4 d'évacuation et en dessous des axes 6 et 22 et de chaque chaîne transporteuse 8. Ces tiges sont destinées à servir d'appui aux bras 4 au cours de leur mouvement de ratissage. Elles permettent de reprendre les efforts transversaux appliqués au bras (par exemple lorsqu'il rencontre une mine) et empêchent le déraillement de la chaîne 8 hors de son pignon 17. Ces tiges 14 de guidage se présentent préférentiellement sous forme de tubes cylindriques afin de minimiser la prise au souffle en cas d'explosion d'une mine.The figure 2 illustrates more particularly an example of embodiment and arrangement of the means 4 for evacuation of mines. The conveyor chains 8 on which are fixed the evacuation arms 4 meshes with the pinions 17 integral with the horizontal front axle 6. Guide rods 14 are disposed on either side of the trajectory of each evacuation arm 4 and below the axes 6 and 22 and of each conveyor chain 8. These rods are intended to serve as support for the arms 4 during their raking movement. They make it possible to take up the transverse forces applied to the arm (for example when it encounters a mine) and prevent derailment of the chain 8 from its pinion 17. These guide rods 14 are preferably in the form of cylindrical tubes in order to minimize breath taking in the event of a mine explosion.

Comme cela est plus particulièrement visible à la figure 3, les tiges 14 s'étendent sur toute la largeur de la charrue de déminage au-delà des axes avant 6 et arrière 22. Par ailleurs, les tiges 14 s'écartent des bras 4 au niveau de l'arrière AR de la charrue. Une telle disposition permet d'empêcher un blocage du bras 4 (par exemple par une pierre) lors de son entrée entre les tiges 14.As this is particularly visible in the figure 3 , the rods 14 extend across the entire width of the mine plow beyond the front axles 6 and rear 22. Moreover, the rods 14 deviate from the arms 4 at the rear rear of the plow. Such an arrangement makes it possible to prevent a blocking of the arm 4 (for example by a stone) when entering between rods 14.

Chaque bras 4 d'évacuation comporte à son extrémité une dent 12 d'évacuation destinée à pénétrer dans le sol et à faciliter la préhension de la mine. Les dents 12 d'évacuation sont orientées vers l'avant de la charrue et elles forment un angle P de 90° à 145° par rapport au bras 4 d'évacuation lui-même.Each evacuation arm 4 has at its end a discharge tooth 12 intended to penetrate into the ground and to facilitate gripping of the mine. The discharge teeth 12 are oriented towards the front of the plow and form an angle P of 90 ° to 145 ° with respect to the evacuation arm 4 itself.

On remarquera aussi que les dents 12 d'évacuation présentent un bord d'attaque 13 profilé en biseau et orienté vers l'extérieur de la charrue afin de faciliter l'évacuation de la mine vers l'extérieur de la charrue. On remarquera encore que les bras 4 d'évacuation ne sont pas tous disposés au même niveau sur leurs chaînes respectives. Les bras ne rentrent donc pas tous dans le sol à l'arrière de la charrue en même temps et ils n'en ressortent pas tous en même temps non plus à l'avant de la charrue mais sortent les uns après les autres. Le décalage est progressif d'un bord de la charrue à l'autre. Il en résulte un mouvement de ratissage qui est transversal au mouvement d'avance de la charrue.It will also be noted that the discharge teeth 12 have a leading edge 13 profiled in a bevel and oriented towards the outside of the plow in order to facilitate the evacuation of the mine towards the outside of the plow. It will again be noted that the evacuation arms 4 are not all arranged at the same level on their respective chains. The arms do not all enter the ground at the back of the plow at the same time and they do not all come out at the same time either at the front of the plow but out one after the other. The offset is progressive from one edge of the plow to the other. This results in a raking movement that is transverse to the advance movement of the plow.

On définira le décalage des bras entre deux chaînes transporteuses 8 consécutives de telle sorte que le ratissage progresse vers un bord B2 de la charrue qui est situé du côté d'un bord externe de la zone déminée (voir figure 3).The offset of the arms between two consecutive conveyor chains 8 will be defined so that the raking progresses towards an edge B2 of the plow which is situated on the side of an outer edge of the demined zone (see figure 3 ).

On peut considérer que la répartition globale des bras 4 sur les différentes chaînes est telle que, lorsque les bras sont sur une portion de chaîne droite entre les axes 6 et 22, les bras 4 consécutifs d'une chaîne à l'autre (donc qui pénètreront dans le sol les uns après les autres) sont situés dans un plan formant un angle de l'ordre de 10° à 20° avec les plans verticaux matérialisés par les chaînes.We can consider that the global distribution of the arms 4 on the different chains is such that, when the arms are on a straight chain portion between the axes 6 and 22, the arms 4 consecutive from one chain to the other (so that penetrate into the soil one after the other) are located in a plane forming an angle of the order of 10 ° to 20 ° with the vertical planes materialized by the chains.

Lorsque les bras tournent autour des pignons 17, les points d'accrochage des bras 4 sur les chaînes 8 ont donc une répartition hélicoïdale.When the arms rotate around the pinions 17, the attachment points of the arms 4 on the chains 8 have a helical distribution.

La figure 3 est une vue d'ensemble illustrant un dispositif de déminage constitué de deux charrues (ou demi-étraves) tractées par un véhicule (non représenté). Les charrues sont tractées au moyen de barres 15 de remorquage fixées dans les logements 16 prévus à cet effet.The figure 3 is an overview illustrating a demining device consisting of two plows (or half-bows) towed by a vehicle (not shown). The plows are towed by means of tow bars 15 fixed in the housings 16 provided for this purpose.

On remarque en particulier sur cette figure que les dents 3 de scarification (dont on voit la partie supérieure rectangulaire sur le bâti supérieur 19) sont disposées parallèlement aux barres 15 de remorquage donc à la direction D de déplacement de la charrue.Note in particular in this figure that the teeth 3 of scarification (which we see the rectangular upper part on the upper frame 19) are arranged parallel to the bars 15 towing so the direction of travel of the plow.

Les différentes chaînes 8 portant les bras d'évacuation 4 se situent chacune dans un plan vertical P qui forme un angle α par rapport à la direction D. Le mouvement de chaque bras d'évacuation 4 par rapport à la charrue se situe donc dans des plans verticaux P parallèles entre eux et inclinés de l'angle α par rapport à la direction D de déplacement de la charrue.The various chains 8 carrying the evacuation arms 4 are each located in a vertical plane P which forms an angle α with respect to the direction D. The movement of each evacuation arm 4 with respect to the plow is thus situated in vertical planes P parallel to each other and inclined by the angle α with respect to the direction D of displacement of the plow.

D'une manière générale, l'inclinaison α des plans P de déplacement des bras par rapport à la direction de déplacement de la charrue est comprise entre 0° et 60°, mais on réalisera préférentiellement le dispositif avec une inclinaison α de l'ordre de 20°. La largeur L du dispositif de déminage est supérieure ou égale à la largeur du véhicule supportant le dispositif. L'utilisation d'un dispositif de déminage constitué de deux charrues est ici donné à titre illustratif. On pourra également réaliser l'invention en mettant en oeuvre une charrue unique dont la largeur sera sensiblement égale ou supérieure à la largeur du véhicule de déminage. Cependant, dans ce dernier cas, la maîtrise de la profondeur de travail des dents de scarification 3 sera moins bonne.In general, the inclination α of the planes P of movement of the arms relative to the direction of movement of the plow is between 0 ° and 60 °, but preferably the device will be made with an inclination α of the order of 20 °. The width L of the demining device is greater than or equal to the width of the vehicle supporting the device. The use of a demining device consisting of two plows is here given for illustrative purposes. It will also be possible to realize the invention by implementing a single plow whose width will be substantially equal to or greater than the width of the demining vehicle. However, in the latter case, the control of the working depth of the scarification teeth 3 will be less good.

Lors de la mise en place sur le terrain on règle la profondeur de travail de la charrue.When setting up in the field, the working depth of the plow is adjusted.

Ce réglage se fait tout d'abord par la modification de la longueur du mât 11a de la potence 11 portant le patin 5. Des repères pourront être réalisés sur le mât 11a pour donner l'indication de la profondeur de scarification associée à la longueur choisie.This adjustment is done firstly by changing the length of the mast 11a of the bracket 11 carrying the pad 5. Markers may be made on the mast 11a to give an indication of the depth of scarification associated with the chosen length .

Par ailleurs on règle ensuite, à l'aide des actionneurs 20, l'écartement entre les bâtis supérieur 19 et inférieur 9.Furthermore, the actuators 20 adjust the distance between the upper and lower frames 19 and 9.

Ce réglage a pour but de régler la position verticale des moyens d'évacuation 4 par rapport aux moyens de scarification 3. En effet, les bras 4 doivent avoir l'extrémité de leurs dents 12 voisine de la surface du sol quelle que soit la profondeur de travail des dents de scarification 3.This adjustment is intended to adjust the vertical position of the evacuation means 4 relative to the scarification means 3. Indeed, the arms 4 must have the end of their teeth 12 close to the surface of the ground regardless of the working depth of the scarification teeth 3.

Pratiquement, on règlera la position du bâti 9 portant les moyens d'évacuation 4 de telle sorte que les dents 12 de l'extrémité des bras 4 pénètrent dans le sol d'une profondeur de l'ordre de 30 mm.In practice, the position of the frame 9 carrying the evacuation means 4 will be adjusted so that the teeth 12 of the end of the arms 4 penetrate into the ground by a depth of the order of 30 mm.

Là encore pour faciliter le réglage, on pourra prévoir des repères (par exemple au niveau des colonnes 10) pour associer à une profondeur de travail souhaitée le positionnement qui est nécessaire pour les moyens d'évacuation 4.Again to facilitate the adjustment, we can provide markers (for example at the level of the columns 10) to associate with a desired working depth the positioning that is necessary for the evacuation means 4.

Le fonctionnement est le suivant : lorsque la charrue est en marche, le moteur 7 entraîne le mouvement des chaînes 8 supportant les bras 4 d'évacuation, par l'intermédiaire de la chaîne d'entraînement 18. Les bras 4 d'évacuation sont donc en mouvement par rapport aux dents de scarification 3 et se déplacent entre chaque dent afin d'effectuer un ratissage de la surface à déminer. Les bras 4 d'évacuation pénètrent légèrement dans le sol au niveau de l'arrière AR de la charrue, ils se translatent de l'arrière AR jusqu'à l'avant AV de la charrue et ressortent du sol à l'avant AV, entre les dents de scarification 3 et en pivotant au niveau du pignon 17.The operation is as follows: when the plow is running, the motor 7 causes the movement of the chains 8 supporting the evacuation arms 4, through the drive chain 18. The evacuation arms 4 are therefore in movement relative to the scarification teeth 3 and move between each tooth in order to rake the surface to be cleared. The evacuation arms 4 penetrate slightly into the ground at the rear rear of the plow, they move from the rear rear to the fore front of the plow and out of the ground at the front AV, between the scarification teeth 3 and pivoting at the pinion 17.

Lorsqu'un bras 4 rencontre une mine, il repousse cette dernière qui bascule sur le côté et se retrouve sur la trajectoire du bras d'évacuation suivant qui la repousse à son tour. Le mouvement de ratissage transversal dû au décalage des différents bras permet de repousser la mine de proche en proche jusqu'au bras se trouvant à l'extrémité de la charrue qui repousse finalement la mine à l'extérieur du passage de la charrue.When an arm 4 encounters a mine, it pushes the latter which tilts to the side and ends up in the path of the next evacuation arm which pushes it in turn. The transverse raking movement due to the offset of the different arms makes it possible to push the mine closer to the arm at the end of the plow which finally pushes the mine outside the plow passage.

Le système comportant ici deux charrues progressant en parallèle, il est nécessaire d'évacuer les mines de part et d'autre du chemin dégagé par les charrues et non de les accumuler au niveau d'une partie médiane entre les charrues.The system here comprising two plows progressing in parallel, it is necessary to evacuate the mines on both sides of the path cleared by the plows and not to accumulate them at a middle part between the plows.

Pour chaque charrue les décalages des bras 4 d'une chaîne transporteuse à l'autre seront donc définis de telle sorte que le ratissage qu'ils assurent progresse depuis le bord interne B1 vers le bord externe B2. On voit sur la figure 3 que ces ratissages doivent donc avoir une direction différente pour chacune des charrues.For each plow, the offsets of the arms 4 from one conveyor chain to the other will therefore be defined so that the raking they ensure progresses from the edge internal B1 to the outer edge B2. We see on the figure 3 these rakes must therefore have a different direction for each plow.

On a illustré l'invention par un exemple où la charrue est tractée, mais l'invention est également réalisable en disposant la charrue à l'avant d'un véhicule, par exemple en utilisant les logements 16 pour y insérer des barres reliées à l'avant du véhicule. Un avantage de l'invention réside justement dans le fait que les dents de scarification et les bras d'évacuation présentent un profil adapté pour fendre le sol sans créer de bourrelet de terre. Les efforts de résistance sont ainsi considérablement réduits, ce qui par conséquent réduit également le dimensionnement des organes de liaison de la charrue au véhicule.The invention is illustrated by an example where the plow is towed, but the invention is also feasible by arranging the plow at the front of a vehicle, for example by using the housings 16 to insert bars connected to it. 'front of the vehicle. An advantage of the invention lies precisely in the fact that the scarification teeth and the evacuation arms have a profile adapted to split the ground without creating a bead of earth. The resistance forces are thus considerably reduced, which consequently also reduces the dimensioning of the connecting members of the plow to the vehicle.

Claims (9)

  1. A mine plough of the type comprising a frame, fixed scarification teeth (3) integral with the frame and means (4) to evacuate the mines, wherein the means (4) to evacuate the mines are in the form of at least one group of clearance arms (4) that move between the scarification teeth (3) so as to rake the area to be demined between the teeth, each group of arms (4) moving from the back to the front of the plough, each group of arms being integral with a conveyor train (8) that is mounted able to rotate between two pinions (17, 21) and is driven by drive means (7), each evacuation arm (4) moving between two consecutive scarification teeth (3), the motion of each of the clearance arms (4) with respect to the plough being located in a plane (P) having an inclination (α) of between 0° and 60° with respect to a displacement direction (D) of the plough.
  2. A mine plough according to Claim 1, wherein the inclination (α) of the displacement plane (P) of the arms with respect to the displacement direction (D) of the plough is of around 20°.
  3. A mine plough according to Claim 1, wherein it comprises a conveyor train (8) positioned between each scarification tooth (3) and wherein the clearance arms (4) carried by a conveyor train (8) are horizontally stepped with respect to the arms carried by a neighbouring conveyor train (8) such that the arms (4) penetrate the ground and are removed from the ground one after the other.
  4. A mine plough according to one of Claims 1 to 3, wherein it comprises a pair of rods (14) under each conveyor train (8) that ensure the guidance and support (14) of the arms (4).
  5. A mine plough according to one of Claims 1 to 4, wherein each clearance arm (4) incorporates a clearance tooth (12) at its end intended to penetrate the ground and facilitate the grasping of the mine.
  6. A mine plough according to Claim 5, wherein each clearance tooth (12) is at an angle (β) of 90° to 145° with respect to the clearance arm.
  7. A mine plough according to Claim 5 or 6, wherein each clearance tooth (12) has a bevelled leading edge (13), oriented to the exterior of the plough so as to facilitate the clearance of the mine towards the exterior of the plough.
  8. A mine plough according to one of Claims 1 to 7, wherein it incorporates at least one sliding foot (5), and wherein this sliding foot is integral with a mast (11a) of adjustable length that enables the working depth of the scarification teeth (3) to be adjusted.
  9. A mine plough according to Claim 8, wherein it incorporates means (20) to adjust the vertical position of the clearance means (4) with respect to the scarification teeth (3).
EP07291260A 2006-10-19 2007-10-16 Mine-clearing plough Active EP1914506B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0609167A FR2907540B1 (en) 2006-10-19 2006-10-19 PLOW OF DEMINING

Publications (2)

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EP1914506A1 EP1914506A1 (en) 2008-04-23
EP1914506B1 true EP1914506B1 (en) 2010-06-23

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Application Number Title Priority Date Filing Date
EP07291260A Active EP1914506B1 (en) 2006-10-19 2007-10-16 Mine-clearing plough

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EP (1) EP1914506B1 (en)
AT (1) ATE472084T1 (en)
DE (1) DE602007007269D1 (en)
ES (1) ES2348026T3 (en)
FR (1) FR2907540B1 (en)

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE501087C2 (en) * 1990-04-23 1994-11-07 Arne Bergsman Land obstruction clearance unit - incorporate clearance appts. with tools, rotator unit and land level monitor
US5198608A (en) * 1991-10-17 1993-03-30 Cahill Peter J Mine clearing rake
GB0004376D0 (en) * 2000-02-25 2000-04-12 Pearson Engineering Limited Vehicle for unearthing buried objects
US7198112B2 (en) * 2004-02-26 2007-04-03 United States Of America As Represented By The Department Of The Army Mine sifting attachment having transverse blades

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FR2907540A1 (en) 2008-04-25
DE602007007269D1 (en) 2010-08-05
FR2907540B1 (en) 2011-03-04
ES2348026T3 (en) 2010-11-26
ATE472084T1 (en) 2010-07-15
EP1914506A1 (en) 2008-04-23

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