EP2048469B1 - Mine-clearing device for a civilian or military vehicle - Google Patents

Mine-clearing device for a civilian or military vehicle Download PDF

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Publication number
EP2048469B1
EP2048469B1 EP08290930A EP08290930A EP2048469B1 EP 2048469 B1 EP2048469 B1 EP 2048469B1 EP 08290930 A EP08290930 A EP 08290930A EP 08290930 A EP08290930 A EP 08290930A EP 2048469 B1 EP2048469 B1 EP 2048469B1
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EP
European Patent Office
Prior art keywords
blade
teeth
sub
tooth
scarification
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EP08290930A
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German (de)
French (fr)
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EP2048469A1 (en
Inventor
Gérald Perrin
Cédric Jolivalt
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Nexter Systems SA
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Nexter Systems SA
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Publication of EP2048469A1 publication Critical patent/EP2048469A1/en
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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

Definitions

  • the technical sector of the present invention is that of demining devices of a field and more particularly of demining plows.
  • 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 equipped with scarification teeth intended to penetrate the soil and to extract buried mines. Pads, secured to the plow, used to adjust the depth of insertion of the teeth, so the depth of mine clearance.
  • the plow also has a blade to evacuate mines extracted on the side of the cleared path.
  • a major disadvantage of currently known plows lies in the fact that during scarification, soil accumulates at the blade, which generates significant friction forces and is a constraint to the displacement of the plow. It is then necessary that the vehicle supporting the plow provide a significant effort.
  • Another disadvantage, related to the nature of the soil and the friction, is the premature wear or the breaking of the teeth of scarification.
  • the object of the present invention is to provide a demining device having a low resistance to movement.
  • the invention therefore relates to a demining device for equipping a civilian or military vehicle, consisting of at least one frame, a discharge blade and scarification teeth integral with the blade, characterized in that it comprises a sub-blade disposed under the blade and adjustable in position relative to the blade.
  • the sub-blade comprises recovery teeth.
  • the recovery teeth are arranged to be located between two scarification teeth.
  • the scarification teeth have an upper edge and in that the sub-blade moves parallel to the upper edges of the scarification teeth.
  • the blade is in the form of a central bow and at least two half-bows arranged on either side of the central bow.
  • the central bow is fixed on a support structure connected to the frame by means of a horizontal pivot connection.
  • the central bow is secured to a rocker supported by the supporting structure by means of a pivot connection, said rocker ensuring servocontrol of the central bow and being indexed on the half-bows side.
  • the device comprises a rocker supported by the support structure by means of a pivot connection.
  • the balance comprises arms whose end is provided with contact rolls intended to cooperate with the lateral half-bows.
  • each tooth of the blade is fixed by means of a shearable pin according to an adjustable threshold to allow the release of said tooth when encountering an obstacle.
  • each tooth is connected to an electric cable whose rupture indicates the absence of said tooth.
  • a first advantage of the device according to the invention lies in its ability to equip both military vehicles and civilian vehicles, such as an agricultural tractor, a clearing machine or a public works machine.
  • Another advantage of the device lies in the fact that it reduces the friction forces with the ground, which reduces the energy required for the movement of the plow.
  • the figure 1 is a general view showing a demining device 1 according to the invention.
  • This demining device (or “demining plow") is intended to equip a civilian or military vehicle (not shown) and to be placed at the front of this vehicle.
  • the device 1 comprises a frame 2 on which is fixed a discharge blade 3, arms 6 whose end is provided with pads 5 and a fastening means 8 for fixing the device 1 to the vehicle intended to maneuver.
  • the device according to the invention also comprises teeth 4 of scarification integral with the blade 3 (itself secured to the frame 2) and a sub-blade 7 disposed under the blade 3 and whose principle of use will be explained later .
  • the sub-blade 7 comprises recovery teeth 11 arranged to be located between two teeth 4 of scarification.
  • magnetic triggers 10 can also be shown that can equip the device 1.
  • the blade 3 is in the form of a central bow 3a and lateral half-bows 3b, 3c, disposed on either side of the central bow 3a.
  • the half-bows 3b, 3c have ends 3d, 3e folding.
  • Such folding half-bows are already known and do not need to be specifically described.
  • the central bow 3a supports a rocker 9 which will be more particularly described later.
  • FIGS 2a and 2b represent the invention in two different configurations and illustrate the principle of operation of the blade 3 and its sub-blade 7.
  • the figure 2a illustrates the invention in a first configuration of deep mine clearance.
  • the scarification teeth 4 penetrate almost completely into the ground (for example 30 cm) and the sub-blade 7 is arranged so that its recovery teeth 11 are flush with the ground.
  • the depth of plowing is adjusted by means of the arms 6 (only one of which is visible).
  • the pads 5 are supported on the ground and the arms 6 allow to position the frame relative to the pads (so the ground).
  • the blade 3 and the teeth 4 being secured to the frame are therefore also adjusted in position relative to the ground by means of the arms 6.
  • a sub-blade provided with recovery teeth advantageously allows to leave a space under the blade 3 allowing the evacuation of the earth to prevent the accumulation of soil in the blade 3 and to reduce the friction forces with the ground.
  • the recovery teeth 11 arranged between two scarification teeth 4 make it possible to achieve a raking effect and to prevent the mines from passing under the sub-blade 7.
  • the inter-tooth distance as well as the distance will be calculated.
  • the sub-blade 7 must be arranged according to the dimensions of the mines to be recovered, so that the mines can not pass between two teeth.
  • it will also be ensured that the recovery teeth 11 are flush with the ground without penetrating it.
  • the figure 2b illustrates the invention in a second mine clearance configuration at medium depth.
  • the scarification teeth 4 penetrate partially in the soil (for example 20cm).
  • the sub-blade 7 is adjustable in position relative to the blade 3 and is positioned so that its recovery teeth 11 are flush with the ground. It will be noted that the scarification teeth 4 have an upper edge 12.
  • the sub-blade 7 moves parallel to the upper edges 12 of the scarification teeth 4 so that, irrespective of the depression of the scarification teeth, at ground level the recovery teeth 11 and the scarification teeth 4 are substantially aligned, which, combined with the displacement of the plow, makes it possible to rake the ground and to trace the excavated mines which will then slide on the sub-blade 7 to the blade 3 to then be evacuated along the blade 3 to a lateral end of the blade and fall on the side of the demining path.
  • the kinematics of the sub-blade 7 is defined so that the upper surface 13 of the sub-blade 7 and the surface 14 of the blade 3 form a substantially continuous surface facilitating the evacuation of mines.
  • FIGS. 3a and 3b illustrate a means for adjusting the position of the sub-blade 7.
  • the sub-blade 7 comprises a blade root 22 intended to be positioned under the blade 3, parallel to the latter.
  • the recovery teeth 11 are fixed on the blade root. Beams 20, substantially perpendicular to the blade root 22, allow the attachment and positioning of the sub-blade relative to the blade 3.
  • the figure 3b illustrates more particularly the method of fixing and positioning the sub-blade.
  • the beams 20 slide in a housing 23 of the frame 2, under the blade 3.
  • the beams 20 comprise several parallel holes 21.
  • the frame 2 also has orifices 24 intended to cooperate with the bores 21.
  • the adjustment in position of the sub-blade 7 with respect to the blade 3 is carried out in the following manner: The depth of plowing is adjusted in position.
  • the sub-blade 7 is then moved by translation until the recovery teeth 11 are flush with the ground.
  • the sub-blade 7 is moved substantially so that for each beam 20, a bore 21 is opposite an orifice 24 of the frame 2, and a pin 25 is placed through the bore 21 and the orifice 24 to immobilize the sub-blade 7 relative to the frame.
  • the figure 4 represents the central bow 3a and its supporting structure.
  • the central bow 3a is fixed on a supporting structure 15.
  • the end of the structure 15 opposite the central bow 3a is intended to be connected to the frame 2 (not shown) by means of a pivot link 18 horizontal.
  • the structure 15 supports scarification teeth.
  • a rocker 9 is also supported by the supporting structure 15 by means of a pivot connection 17.
  • the rocker 7 comprises arms 18 whose end is provided with contact rolls 16.
  • the figure 5 illustrates the enslavement of the central bow relative to the lateral half-bows.
  • the enslavement of the central bow 3a is done through the rocker 9 indexed on the lateral half-bows 3b and 3c by means of the contact rollers 16.
  • the lateral half-bows 3b and 3c are positioned in height thanks to the arms 6 provided of their pads 5 which are supported on the ground. However, the ground may be rough or inclined, the side bows are then located at different heights relative to each other.
  • the rocker 9 thus makes it possible to position the central bow 3a at an intermediate level between the lateral bows.
  • Such an embodiment advantageously makes it possible to dispense with an arm and a skid intended for the central bow and thus to reduce the friction forces applied to the plow.
  • the Figures 6 to 8c illustrate an example of attachment of the scarification teeth.
  • the device according to the invention is completed by a system for fixing the breaking threshold of the scarification teeth and detecting the release of said teeth in order to allow the stall of a scarification tooth when it encounters an obstacle hindering the operation of the plough
  • the figure 6 represents a scarification tooth 4.
  • Each scarification tooth 4 has a notch 30, surmounted by a slot 33, and a hole 31 for fixing the tooth on the blade 3.
  • the figure 7 is a sectional view of a link at break point between a scarification tooth 4 and the blade 3.
  • the scarification tooth 4 is disposed between two lugs 35 integral with the blade 3.
  • the two legs 35 have an opening 34 of the same diameter as the bore 31 of the tooth.
  • the scarification tooth 4 is secured to the blade 3 by means of a shear pin 32.
  • the sheave pin 32 is in the form of a tubular cylinder having restrictions 36 whose dimensions are calculated to allow a calibrated breaking of the pin when the forces applied to the tooth 4 exceed a breaking threshold.
  • the Figures 8a to 8c illustrate the stall mode of a tooth 4.
  • break point of the pin 32 is adjusted according to the nature of the ground to be cleared.
  • each tooth 4 is connected to an electrical cable whose breaking causes the appearance of a signal to the operator.
  • the electric cable can be passed through the aperture 33 and when the pin 32 breaks, the tooth 4 comes off and the light 33 cuts the cable acting as a cutting plier, which makes it possible to detect the break of a tooth.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Soil Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning Of Streets, Tracks, Or Beaches (AREA)
  • Revetment (AREA)
  • Road Paving Structures (AREA)
  • Soil Working Implements (AREA)
  • Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)

Abstract

The device (1) has scarification teeth (4) integrated to an evacuation blade (3). A sub-blade (7) is placed below the evacuation blade and adjusted in position with respect to the evacuation blade. The sub-blade is displaced parallel to upper stops of the teeth. The evacuation blade has a central stem (3a) fixed on a carrier structure. The structure is connected to a chassis (2) by a horizontal pivot connection. The sub-blade has capture teeth (11) placed between the scarification teeth.

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 pourvue de dents de scarification destinées à pénétrer dans le sol et à en extraire des mines enfouies. Des patins, solidaires de la charrue, permettent de régler la profondeur d'enfoncement des dents, donc la profondeur du déminage. La charrue comporte également une lame permettant d'évacuer les mines extraites sur le côté du chemin déminé.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 equipped with scarification teeth intended to penetrate the soil and to extract buried mines. Pads, secured to the plow, used to adjust the depth of insertion of the teeth, so the depth of mine clearance. The plow also has a blade to evacuate mines extracted on the side of the cleared path.

Un inconvénient majeur des charrues actuellement connues réside dans le fait que lors de la scarification, de la terre s'accumule au niveau de la lame, ce qui engendre d'importantes forces de frottement et constitue une contrainte au déplacement de la charrue. Il est alors nécessaire que le véhicule supportant la charrue fournisse un effort important. Un autre inconvénient, lié à la nature du sol et aux frottements, est l'usure prématurée ou la rupture des dents de scarification.A major disadvantage of currently known plows lies in the fact that during scarification, soil accumulates at the blade, which generates significant friction forces and is a constraint to the displacement of the plow. It is then necessary that the vehicle supporting the plow provide a significant effort. Another disadvantage, related to the nature of the soil and the friction, is the premature wear or the breaking of the teeth of scarification.

Une telle charrue est connue du document WO 03/091653 A .Such a plow is known from the document WO 03/091653 A .

Le but de la présente invention est de fournir un dispositif de déminage présentant une faible résistance aux déplacements.The object of the present invention is to provide a demining device having a low resistance to movement.

L'invention a donc pour objet un dispositif de déminage destiné à équiper un véhicule civil ou militaire, composé d'au moins un châssis, d'une lame d'évacuation et de dents de scarification solidaires de la lame, dispositif caractérisé en ce qu'il comporte une sous-lame disposée sous la lame et réglable en position par rapport à la lame.The invention therefore relates to a demining device for equipping a civilian or military vehicle, consisting of at least one frame, a discharge blade and scarification teeth integral with the blade, characterized in that it comprises a sub-blade disposed under the blade and adjustable in position relative to the blade.

Selon une caractéristique de l'invention, la sous-lame comporte des dents de reprise.According to one characteristic of the invention, the sub-blade comprises recovery teeth.

Selon une autre caractéristique de l'invention, les dents de reprise sont disposées de manière à être situées entre deux dents de scarification.According to another characteristic of the invention, the recovery teeth are arranged to be located between two scarification teeth.

Selon encore une autre caractéristique de l'invention, les dents de scarification présentent une arête supérieure et en ce que la sous-lame se déplace parallèlement aux arêtes supérieures des dents de scarification.According to yet another characteristic of the invention, the scarification teeth have an upper edge and in that the sub-blade moves parallel to the upper edges of the scarification teeth.

Selon une autre caractéristique de l'invention, la lame se présente sous la forme d'une étrave centrale et d'au moins deux demi-étraves disposées de part et d'autre de l'étrave centrale.According to another characteristic of the invention, the blade is in the form of a central bow and at least two half-bows arranged on either side of the central bow.

Selon une autre caractéristique de l'invention, l'étrave centrale est fixée sur une structure porteuse reliée au châssis au moyen d'une liaison pivot horizontale.According to another characteristic of the invention, the central bow is fixed on a support structure connected to the frame by means of a horizontal pivot connection.

Selon une autre caractéristique de l'invention, l'étrave centrale est solidaire d'un balancier supporté par la structure porteuse au moyen d'une liaison pivot, ledit balancier assurant un asservissement de l'étrave centrale et étant indexé sur les demi-étraves latérales.According to another characteristic of the invention, the central bow is secured to a rocker supported by the supporting structure by means of a pivot connection, said rocker ensuring servocontrol of the central bow and being indexed on the half-bows side.

Selon une autre caractéristique de l'invention, le dispositif comporte un balancier supporté par la structure porteuse au moyen d'une liaison pivot.According to another characteristic of the invention, the device comprises a rocker supported by the support structure by means of a pivot connection.

Selon une autre caractéristique de l'invention, le balancier comporte des bras dont l'extrémité est pourvue de cylindres de contact destinés à coopérer avec les demi-étraves latérales.According to another characteristic of the invention, the balance comprises arms whose end is provided with contact rolls intended to cooperate with the lateral half-bows.

Selon encore une autre caractéristique de l'invention, chaque dent de la lame est fixée à l'aide d'une goupille cisaillable suivant un seuil ajustable pour permettre la libération de ladite dent lors de la rencontre avec un obstacle.According to yet another characteristic of the invention, each tooth of the blade is fixed by means of a shearable pin according to an adjustable threshold to allow the release of said tooth when encountering an obstacle.

Selon encore une autre caractéristique de l'invention, chaque dent est reliée à un câble électrique dont la rupture indique l'absence de ladite dent.According to yet another characteristic of the invention, each tooth is connected to an electric cable whose rupture indicates the absence of said tooth.

Un tout premier avantage du dispositif selon l'invention réside dans sa capacité à équiper aussi bien des véhicules militaires que des véhicules civils, tels un tracteur agricole, un engin de déblaiement ou encore un engin de travaux publics.A first advantage of the device according to the invention lies in its ability to equip both military vehicles and civilian vehicles, such as an agricultural tractor, a clearing machine or a public works machine.

Un autre avantage du dispositif réside dans le fait qu'il permet de diminuer les forces de frottement avec le sol, ce qui diminue l'énergie nécessaire au déplacement de la charrue.Another advantage of the device lies in the fact that it reduces the friction forces with the ground, which reduces the energy required for the movement of the plow.

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 est une vue générale de l'invention,
  • les figures 2a et 2b représentent l'invention dans deux configurations différentes,
  • les figure 3a et 3b illustrent un moyen de réglage en position d'une sous-lame,
  • la figure 4 représente l'étrave centrale et sa structure porteuse,
  • la figure 5 illustre l'asservissement de l'étrave centrale par rapport aux demi-étraves latérales, et
  • les figures 6 à 8 illustrent un exemple de fixation des dents de scarification.
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 is a general view of the invention,
  • the Figures 2a and 2b represent the invention in two different configurations,
  • the Figure 3a and 3b illustrate means for adjusting the position of a sub-blade,
  • the figure 4 represents the central bow and its supporting structure,
  • the figure 5 illustrates the enslavement of the central bow relative to the lateral half-bows, and
  • the Figures 6 to 8 illustrate an example of attachment of the scarification teeth.

La figure 1 est une vue générale représentant un dispositif 1 de déminage selon l'invention. Ce dispositif de déminage (ou "charrue de déminage") est destiné à équiper un véhicule civil ou militaire (non représenté) et à être placé à l'avant de ce véhicule. Le dispositif 1 comporte un châssis 2 sur lequel est fixée une lame 3 d'évacuation, des bras 6 dont l'extrémité est pourvue de patins 5 et un moyen 8 de fixation permettant de fixer le dispositif 1 au véhicule destiné à le manoeuvrer. Le dispositif selon l'invention comporte également des dents 4 de scarification solidaires de la lame 3 (elle-même solidaire du châssis 2) et une sous-lame 7 disposée sous la lame 3 et dont le principe d'utilisation sera expliqué par la suite. La sous-lame 7 comporte des dents de reprise 11 disposées de manière à être situées entre deux dents 4 de scarification. Par ailleurs, on a aussi représenté des déclencheurs magnétiques 10 pouvant équiper le dispositif 1.The figure 1 is a general view showing a demining device 1 according to the invention. This demining device (or "demining plow") is intended to equip a civilian or military vehicle (not shown) and to be placed at the front of this vehicle. The device 1 comprises a frame 2 on which is fixed a discharge blade 3, arms 6 whose end is provided with pads 5 and a fastening means 8 for fixing the device 1 to the vehicle intended to maneuver. The device according to the invention also comprises teeth 4 of scarification integral with the blade 3 (itself secured to the frame 2) and a sub-blade 7 disposed under the blade 3 and whose principle of use will be explained later . The sub-blade 7 comprises recovery teeth 11 arranged to be located between two teeth 4 of scarification. Furthermore, magnetic triggers 10 can also be shown that can equip the device 1.

Dans cet exemple de réalisation, la lame 3 se présente sous la forme d'une étrave centrale 3a et de demi-étraves latérales 3b, 3c, disposées de part et d'autre de l'étrave centrale 3a. Les demi-étraves 3b, 3c comportent des extrémités 3d, 3e repliables. De telles demi-étraves repliables sont déjà connues et ne nécessitent pas d'être spécifiquement décrites. On pourra cependant se référer à la demande de brevet N° EP1434024 qui porte déjà sur le repli des extrémités des étraves. L'étrave centrale 3a supporte un balancier 9 qui sera plus particulièrement décrit par la suite.In this embodiment, the blade 3 is in the form of a central bow 3a and lateral half-bows 3b, 3c, disposed on either side of the central bow 3a. The half-bows 3b, 3c have ends 3d, 3e folding. Such folding half-bows are already known and do not need to be specifically described. However, reference may be made to the patent application No. EP1434024 which already bears on the folding of the ends of the bows. The central bow 3a supports a rocker 9 which will be more particularly described later.

Les figures 2a et 2b représentent l'invention dans deux configurations différentes et illustrent le principe de fonctionnement de la lame 3 et de sa sous-lame 7.The Figures 2a and 2b represent the invention in two different configurations and illustrate the principle of operation of the blade 3 and its sub-blade 7.

La figure 2a illustre l'invention dans une première configuration de déminage en profondeur. Dans cette configuration, les dents de scarification 4 pénètrent presque totalement dans le sol (par exemple 30 cm) et la sous-lame 7 est disposée de manière à ce que ses dents de reprise 11 affleurent le sol. Classiquement, la profondeur de labourage (donc l'enfoncement des dents de scarification dans le sol) est ajustée au moyen des bras 6 (dont un seul est visible). Les patins 5 sont en appui sur le sol et les bras 6 permettent de positionner le châssis par rapport aux patins (donc au sol). La lame 3 et les dents 4 étant solidaires du châssis, sont donc également ajustées en position par rapport au sol au moyen des bras 6. L'utilisation d'une sous-lame munie de dents de reprise permet avantageusement de laisser un espace sous la lame 3 permettant l'évacuation de la terre afin d'empêcher l'accumulation de terre dans la lame 3 et de diminuer les forces de frottement avec le sol. Avantageusement encore, les dents de reprise 11 disposées entre deux dents 4 de scarification permettent de réaliser un effet de ratissage et d'empêcher les mines de passer sous la sous-lame 7. Ainsi, on calculera la distance inter-dent ainsi que la distance au-dessus du sol à laquelle il faut disposer la sous-lame 7 en fonction des dimensions des mines à récupérer, afin que les mines ne puissent passer entre deux dents. Afin de diminuer les forces de frottement, on veillera également à ce que les dents de reprise 11 affleurent le sol sans y pénétrer.The figure 2a illustrates the invention in a first configuration of deep mine clearance. In this configuration, the scarification teeth 4 penetrate almost completely into the ground (for example 30 cm) and the sub-blade 7 is arranged so that its recovery teeth 11 are flush with the ground. Conventionally, the depth of plowing (thus the depression of the scarification teeth in the ground) is adjusted by means of the arms 6 (only one of which is visible). The pads 5 are supported on the ground and the arms 6 allow to position the frame relative to the pads (so the ground). The blade 3 and the teeth 4 being secured to the frame, are therefore also adjusted in position relative to the ground by means of the arms 6. The use of a sub-blade provided with recovery teeth advantageously allows to leave a space under the blade 3 allowing the evacuation of the earth to prevent the accumulation of soil in the blade 3 and to reduce the friction forces with the ground. Advantageously again, the recovery teeth 11 arranged between two scarification teeth 4 make it possible to achieve a raking effect and to prevent the mines from passing under the sub-blade 7. Thus, the inter-tooth distance as well as the distance will be calculated. above the ground to which the sub-blade 7 must be arranged according to the dimensions of the mines to be recovered, so that the mines can not pass between two teeth. In order to reduce the frictional forces, it will also be ensured that the recovery teeth 11 are flush with the ground without penetrating it.

La figure 2b illustre l'invention dans une seconde configuration de déminage à profondeur moyenne. Dans cette configuration, les dents de scarification 4 pénètrent partiellement dans le sol (par exemple 20cm). La sous-lame 7 est réglable en position par rapport à la lame 3 et est positionnée de manière à ce que ses dents de reprise 11 affleurent le sol. On remarquera que les dents 4 de scarification présentent une arête supérieure 12. La sous-lame 7 se déplace parallèlement aux arêtes supérieures 12 des dents 4 de scarification afin que, quel que soit l'enfoncement des dents de scarification, au niveau du sol les dents de reprise 11 et les dents 4 de scarification sont sensiblement alignées, ce qui, combiné au déplacement de la charrue, permet de ratisser le sol et de faire remonter les mines déterrées qui vont alors glisser sur la sous-lame 7 jusqu'à la lame 3 pour ensuite être évacuées le long de la lame 3 jusqu'à une extrémité latérale de la lame et tomber sur le côté du chemin de déminage. A cet effet, la cinématique de la sous-lame 7 est définie de manière à ce que la surface supérieure 13 de la sous-lame 7 et la surface 14 de la lame 3 forment une surface sensiblement continue facilitant l'évacuation des mines.The figure 2b illustrates the invention in a second mine clearance configuration at medium depth. In this configuration, the scarification teeth 4 penetrate partially in the soil (for example 20cm). The sub-blade 7 is adjustable in position relative to the blade 3 and is positioned so that its recovery teeth 11 are flush with the ground. It will be noted that the scarification teeth 4 have an upper edge 12. The sub-blade 7 moves parallel to the upper edges 12 of the scarification teeth 4 so that, irrespective of the depression of the scarification teeth, at ground level the recovery teeth 11 and the scarification teeth 4 are substantially aligned, which, combined with the displacement of the plow, makes it possible to rake the ground and to trace the excavated mines which will then slide on the sub-blade 7 to the blade 3 to then be evacuated along the blade 3 to a lateral end of the blade and fall on the side of the demining path. For this purpose, the kinematics of the sub-blade 7 is defined so that the upper surface 13 of the sub-blade 7 and the surface 14 of the blade 3 form a substantially continuous surface facilitating the evacuation of mines.

Les figures 3a et 3b illustrent un moyen de réglage en position de la sous-lame 7.The Figures 3a and 3b illustrate a means for adjusting the position of the sub-blade 7.

La sous-lame 7 comporte un pied de lame 22 destiné à se positionner sous la lame 3, parallèlement à cette dernière. Les dents de reprise 11 sont fixées sur le pied de lame. Des poutres 20, sensiblement perpendiculaires au pied de lame 22, permettent la fixation et le positionnement de la sous-lame par rapport à la lame 3.The sub-blade 7 comprises a blade root 22 intended to be positioned under the blade 3, parallel to the latter. The recovery teeth 11 are fixed on the blade root. Beams 20, substantially perpendicular to the blade root 22, allow the attachment and positioning of the sub-blade relative to the blade 3.

La figure 3b illustre plus particulièrement le mode de fixation et de positionnement de la sous-lame. Les poutres 20 coulissent dans un logement 23 du châssis 2, sous la lame 3. Les poutres 20 comportent plusieurs perçages 21 parallèles. Le châssis 2 comporte également des orifices 24 destinés à coopérer avec les perçages 21. Le réglage en position de la sous-lame 7 par rapport à la lame 3 est réalisée de la manière suivante : On règle en position la profondeur de labourage. On déplace ensuite la sous-lame 7 par translation jusqu'à ce que les dents de reprise 11 affleurent le sol. On déplace sensiblement la sous-lame 7 afin que, pour chaque poutre 20, un perçage 21 se trouve en regard d'un orifice 24 du châssis 2, et on place une goupille 25 au travers du perçage 21 et de l'orifice 24 afin d'immobiliser la sous-lame 7 par rapport au châssis.The figure 3b illustrates more particularly the method of fixing and positioning the sub-blade. The beams 20 slide in a housing 23 of the frame 2, under the blade 3. The beams 20 comprise several parallel holes 21. The frame 2 also has orifices 24 intended to cooperate with the bores 21. The adjustment in position of the sub-blade 7 with respect to the blade 3 is carried out in the following manner: The depth of plowing is adjusted in position. The sub-blade 7 is then moved by translation until the recovery teeth 11 are flush with the ground. The sub-blade 7 is moved substantially so that for each beam 20, a bore 21 is opposite an orifice 24 of the frame 2, and a pin 25 is placed through the bore 21 and the orifice 24 to immobilize the sub-blade 7 relative to the frame.

La figure 4 représente l'étrave centrale 3a et sa structure porteuse.The figure 4 represents the central bow 3a and its supporting structure.

L'étrave centrale 3a est fixée sur une structure porteuse 15. L'extrémité de la structure 15 opposée à l'étrave centrale 3a est destinée à être reliée au châssis 2 (non représenté) au moyen d'une liaison pivot 18 horizontale. De la même manière que pour le châssis 2, la structure 15 supporte des dents de scarification. Un balancier 9 est également supporté par la structure porteuse 15 au moyen d'une liaison pivot 17. Le balancier 7 comporte des bras 18 dont l'extrémité est pourvue de cylindres de contact 16.The central bow 3a is fixed on a supporting structure 15. The end of the structure 15 opposite the central bow 3a is intended to be connected to the frame 2 (not shown) by means of a pivot link 18 horizontal. In the same way as for the frame 2, the structure 15 supports scarification teeth. A rocker 9 is also supported by the supporting structure 15 by means of a pivot connection 17. The rocker 7 comprises arms 18 whose end is provided with contact rolls 16.

La figure 5 illustre l'asservissement de l'étrave centrale par rapport aux demi-étraves latérales.The figure 5 illustrates the enslavement of the central bow relative to the lateral half-bows.

L'asservissement de l'étrave centrale 3a se fait grâce au balancier 9 indexé sur les demi-étraves latérales 3b et 3c au moyen des cylindres de contact 16. Les demi-étraves latérales 3b et 3c sont positionnées en hauteur grâce aux bras 6 munis de leurs patins 5 qui sont en appui sur le sol. Cependant, le sol peut être accidenté ou incliné, les étraves latérales sont alors situées à des hauteurs différentes l'une par rapport à l'autre. Le balancier 9 permet ainsi de positionner l'étrave centrale 3a à un niveau intermédiaire entre les étraves latérales. Une telle réalisation permet avantageusement de s'affranchir d'un bras et d'un patin destinés à l'étrave centrale et de diminuer ainsi les forces de frottement appliquées à la charrue.The enslavement of the central bow 3a is done through the rocker 9 indexed on the lateral half-bows 3b and 3c by means of the contact rollers 16. The lateral half-bows 3b and 3c are positioned in height thanks to the arms 6 provided of their pads 5 which are supported on the ground. However, the ground may be rough or inclined, the side bows are then located at different heights relative to each other. The rocker 9 thus makes it possible to position the central bow 3a at an intermediate level between the lateral bows. Such an embodiment advantageously makes it possible to dispense with an arm and a skid intended for the central bow and thus to reduce the friction forces applied to the plow.

Les figures 6 à 8c illustrent un exemple de fixation des dents de scarification. Le dispositif selon l'invention est complété par un système de fixation à seuil de rupture des dents de scarification et de détection du largage desdites dents afin de permettre le décrochage d'une dent de scarification lorsque celle-ci rencontre un obstacle entravant le fonctionnement de la charrueThe Figures 6 to 8c illustrate an example of attachment of the scarification teeth. The device according to the invention is completed by a system for fixing the breaking threshold of the scarification teeth and detecting the release of said teeth in order to allow the stall of a scarification tooth when it encounters an obstacle hindering the operation of the plough

La figure 6 représente une dent 4 de scarification. Chaque dent de scarification 4 comporte une encoche 30, surmontée d'une lumière 33, et un perçage 31 destinés à la fixation de la dent sur la lame 3.The figure 6 represents a scarification tooth 4. Each scarification tooth 4 has a notch 30, surmounted by a slot 33, and a hole 31 for fixing the tooth on the blade 3.

La figure 7 est une vue en coupe d'une liaison à seuil de rupture entre une dent 4 de scarification et la lame 3. Au niveau du perçage 31, la dent 4 de scarification est disposée entre deux pattes 35 solidaires de la lame 3. Les deux pattes 35 comportent une ouverture 34 de même diamètre que le perçage 31 de la dent. La dent 4 de scarification est solidaire de la lame 3 par l'intermédiaire d'une goupille cisaillable 32.The figure 7 is a sectional view of a link at break point between a scarification tooth 4 and the blade 3. At the piercing 31, the scarification tooth 4 is disposed between two lugs 35 integral with the blade 3. The two legs 35 have an opening 34 of the same diameter as the bore 31 of the tooth. The scarification tooth 4 is secured to the blade 3 by means of a shear pin 32.

La goupille cisaillable 32 se présente sous la forme d'un cylindre tubulaire comportant des strictions 36 dont les dimensions sont calculées afin de permettre une rupture calibrée de la goupille lorsque les efforts appliqués à la dent 4 dépassent un seuil de rupture.The sheave pin 32 is in the form of a tubular cylinder having restrictions 36 whose dimensions are calculated to allow a calibrated breaking of the pin when the forces applied to the tooth 4 exceed a breaking threshold.

Les figures 8a à 8c illustrent le mode de décrochage d'une dent 4.The Figures 8a to 8c illustrate the stall mode of a tooth 4.

Sur la figure 8a, on voit que l'encoche 30 (non visible sur cette figure) de la dent 4 de scarification coopère avec un axe 37 de la lame 3 et le perçage 31 (non visible sur cette figure) de la dent 4 de scarification coopère avec la goupille cisaillable 32 comme décrit précédemment.On the figure 8a , we see that the notch 30 (not visible in this figure) of the scarification tooth 4 cooperates with an axis 37 of the blade 3 and the bore 31 (not visible in this figure) of the scarification tooth 4 cooperates with the shear pin 32 as previously described.

Lorsqu'une dent de scarification 4 rencontre un obstacle entravant le fonctionnement de la charrue, la goupille 32 est rompue et la dent 4 pivote autour de l'axe 37 (comme représenté figure 8b) puis se détache de la lame librement (comme représenté figure 8c).When a scarification tooth 4 encounters an obstacle hindering the operation of the plow, the pin 32 is broken and the tooth 4 pivots about the axis 37 (as shown figure 8b ) then comes off the blade freely (as shown figure 8c ).

Bien entendu, le seuil de rupture de la goupille 32 est ajusté suivant la nature du terrain à déminer.Of course, the break point of the pin 32 is adjusted according to the nature of the ground to be cleared.

Afin de détecter cette rupture, chaque dent 4 est reliée à un câble électrique dont la rupture entraîne l'apparition d'un signal à l'opérateur. On pourra par exemple faire passer le câble électrique dans la lumière 33 et lorsque la goupille 32 se rompt, la dent 4 se détache et la lumière 33 coupe le câble en jouant le rôle d'une pince coupante, ce qui permet de détecter la rupture d'une dent.In order to detect this break, each tooth 4 is connected to an electrical cable whose breaking causes the appearance of a signal to the operator. For example, the electric cable can be passed through the aperture 33 and when the pin 32 breaks, the tooth 4 comes off and the light 33 cuts the cable acting as a cutting plier, which makes it possible to detect the break of a tooth.

Ainsi, l'opérateur est prévenu de l'augmentation de l'espace entre une dent de lame et la dent adjacente de la sous-lame. Cet opérateur est donc informé de la possibilité que des mines soient laissées en place ou passent sous le véhicule. Cette fixation de la dent permet d'augmenter la sécurité procurée par le dispositif selon l'invention.Thus, the operator is warned of the increase in the gap between a blade tooth and the adjacent tooth of the sub-blade. This operator is therefore informed of the possibility that mines are left in place or pass under the vehicle. This fixation of the tooth makes it possible to increase the safety provided by the device according to the invention.

Claims (10)

  1. A demining device (1) intended to equip a civilian or military vehicle, composed of at least one chassis (2), a clearance blade (3) and scarification teeth (4) integral with the blade (3), device characterised in that it incorporates a sub-blade (7) positioned under the blade (3) and adjustable in position with respect to the blade (3).
  2. A demining device according to Claim 1, characterised in that the sub-blade (7) incorporates secondary teeth (11).
  3. A demining device according to Claim 2, characterised in that the secondary teeth (11) are arranged so as to be located between two scarification teeth (4).
  4. A demining device according to one of Claims 1 to 3, characterised in that the scarification teeth (4) have an upper edge (12) and wherein the sub-blade (7) progresses in parallel to the upper edges (12) of the scarification teeth (4).
  5. A demining device according to any one of the above Claims, characterised in that the blade (3) is in the form of a central V-blade (3a) and at least two expander blades (3b, 3c) positioned on either side of the central V-blade (3a).
  6. A demining device according to Claim 5, characterised in that the central V-blade (3a) is fixed to a carrying structure (15) linked to the chassis (2) by means of a horizontal pivot link (18).
  7. A demining device according to Claim 6, characterised in that the central V-blade (3a) is integral with an equalizer beam (9) supported by the carrying structure (15) by means of a pivot link (17), said equalizer beam ensuring the servo-control of the central V-blade (3a) and being indexed onto the lateral expander blades (3b, 3c).
  8. A demining device according to Claim 7, characterised in that the equalizer beam (9) incorporates arms (18) whose ends are provided with contact rolls (16) intended to cooperate with the lateral expander blades (3b, 3c).
  9. A demining device according to any one of the above Claims, characterised in that each tooth (4) of the blade is fixed by means of a shearable pin (32) with a breaking strength that can be adjusted to enable said tooth to be freed after encountering an obstacle.
  10. A demining device according to Claim 9, characterised in that each tooth (4) is linked to an electric cable whose rupture indicates the absence of said tooth.
EP08290930A 2007-10-08 2008-10-02 Mine-clearing device for a civilian or military vehicle Active EP2048469B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0707025A FR2922005B1 (en) 2007-10-08 2007-10-08 DEMINING DEVICE FOR CIVIL OR MILITARY VEHICLE

Publications (2)

Publication Number Publication Date
EP2048469A1 EP2048469A1 (en) 2009-04-15
EP2048469B1 true EP2048469B1 (en) 2010-05-26

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EP (1) EP2048469B1 (en)
AT (1) ATE469332T1 (en)
DE (1) DE602008001348D1 (en)
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FR (1) FR2922005B1 (en)

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Publication number Priority date Publication date Assignee Title
FR2961589B1 (en) * 2010-06-18 2014-11-28 Mbda France EQUIPMENT FOR NEUTRALIZING EXPLOSIVE OR SIMILAR DEVICES ORDERED BY WIRELESS LINKAGE
KR101074573B1 (en) 2011-05-18 2011-10-17 주식회사 세안정기 Plough for removing mine of full track width
JP5377618B2 (en) * 2011-12-08 2013-12-25 清 雨宮 Mine and unexploded bomb disposal equipment
EP2719991A1 (en) * 2012-10-15 2014-04-16 Pearson Engineering Limited Mounting assembly for vehicle and vehicle incorporating such assembly
GB2545638B (en) * 2015-12-13 2021-07-21 Pearson Eng Ltd Improvements in or relating to mine ploughing
EP4101272A1 (en) * 2021-06-08 2022-12-14 Fravizel - Equipamentos Metalomecânicos SA Digging attachment for sowing line
FR3138511A1 (en) * 2022-08-01 2024-02-02 Elwedys Arm for mine clearance robot

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Publication number Priority date Publication date Assignee Title
GB2220894A (en) * 1988-07-19 1990-01-24 Jayauto Ltd Adjustable tine depth mineplough
US4967850A (en) * 1989-11-02 1990-11-06 Caterpillar Inc. Combined tooth retractor and blade latching mechanism
AU2003218846A1 (en) * 2002-04-26 2003-11-10 Inter-Continental Safety Systems Inc. Method and processor for removing explosive devices from an area of land
FR2849178B1 (en) 2002-12-18 2007-04-27 Giat Ind Sa TRACTABLE DEVICE FOR SURFACE DISMANTLING AND MARKING OF THE DEMINE ROUTE
US20070163792A1 (en) * 2006-01-17 2007-07-19 Marlin Parrish Land clearing rake

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FR2922005A1 (en) 2009-04-10
DE602008001348D1 (en) 2010-07-08
FR2922005B1 (en) 2009-12-04
ATE469332T1 (en) 2010-06-15
EP2048469A1 (en) 2009-04-15
ES2346722T3 (en) 2010-10-19

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