Classifications

• • 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
  • F41H11/18—Self-propelled mine-clearing vehicles; Mine-clearing devices attachable to vehicles with ground-impacting means for activating mines by the use of mechanical impulses, e.g. flails or stamping elements
• • 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
  • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
• • 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
  • A01B33/00—Tilling implements with rotary driven tools, e.g. in combination with fertiliser distributors or seeders, with grubbing chains, with sloping axles, with driven discs
  • A01B33/08—Tools; Details, e.g. adaptations of transmissions or gearings
  • A01B33/10—Structural or functional features of the tools ; Theoretical aspects of the cutting action
  • A01B33/103—Structural or functional features of the tools ; Theoretical aspects of the cutting action the rotating shaft being oriented horizontally

Definitions

• the present invention relates to an apparatus for working the soil.
• the apparatus in question is intended in particular to carry out the work of the soil in hardly accessible zones, such as ditches.
• This soil working device can be a device which returns the soil to the surface, or more deeply, for the purpose of cleaning or sanitizing the surface to be worked.
• This device can also be used to neutralize anti-personnel mines in areas that are difficult to access, such as ditches.
• apparatuses for the detection of anti-personnel mines which work on relatively flat surfaces, by detecting and by bursting the anti-personnel mines, either by exerting a pressure or vibrations on the soil, or by carrying out the disbursement of a layer of soil, for example using rotary tools.
• such devices are not suitable for working on steep terrain or on terrain with irregularities.
• the apparatus comprises an arm mounted on a support at one of its ends, and having several elements articulated one on the other around horizontal axes.
• the support on which the arm is mounted may, for example, be constituted by a turret pivotally mounted about a vertical axis on the chassis of a vehicle.
• the free end of the arm is equipped with a tool holder.
• the object of the invention is to provide an apparatus of this type, which can operate on steep terrain or with marked irregularities, such as ditches.
• the free end of the arm is equipped with a rotary actuator with an axis of rotation transverse to the articulation axes of the elements of the arm, and on the part lower of which is fixed a housing containing a motor intended for driving an output shaft transverse to the axis of the rotary actuator and at the end of which is mounted in cantilever a tool.
• the output shaft at the end of which the tool is mounted is parallel to the ground.
• the tool is therefore cantilevered at the end of the output shaft of the drive motor which is, for example, a motor hydraulic.
• This tool being mounted pivoting about a horizontal axis, will therefore work in a vertical plane. It is therefore possible to work in a very narrow area, such as a ditch, by orienting the work surface in the direction of the ditch or to work very close to an obstacle, such as a wall, by playing on the position of the arm which is made up of several elements articulated one on the other, and on the angular position of the tool-holder housing, with respect to the end of the arm, thanks to the rotary actuator.
• the output shaft at the end of which the tool is mounted is equipped with means for displacement in translation along its axis. It is thus possible to widen the intervention area of the tool by animating the output shaft with an alternating movement.
• the width of the working area of the tool is 10 cm and the cylinder stroke is 30 cm, it will be possible for the same position of the arm to get a job of the ground over a width of 40 cm.
• the means for translational movement of the output shaft are constituted by a hydraulic cylinder.
• a socket fitted at the periphery of a toothed ring meshing with a pinion driven to from the engine, and inside which is mounted free in translation but locked in rotation a hollow shaft forming a cylinder for a piston fixed at the end of a rod secured to the housing.
• the hollow shaft is made integral in rotation with the sleeve by a set of complementary grooves formed in their contacting faces.
• the cylinder supply circuit comprises conduits formed in the rod of the cylinder.
• the tool mounted in overhang at the end of the motor output shaft can have different shapes. It may be, for example, a hub on which the ends of chains are fixed, the other ends of which are fitted with weights, or on which several radial arms are fixed, the free ends of which are sharp.
• this tool comprises a disk or several parallel disks whose center is wedged at the end of the shaft and whose periphery has teeth.
• the tool mounted in cantilever at the end of the output shaft comprises a disc supporting on a first angular sector, a section of cylindrical surface, from which extends at at least one tooth capable of penetrating the ground and, on a second angular sector, a plurality of rods capable of displacing the soil displaced by the tooth.
• the orientation of the rods varies gradually from a divergent orientation relative to rotation to an orientation of the rods parallel to the axis of rotation.
• Figure 1 is a general perspective view showing the entire apparatus
• Figure 2 is a perspective view on an enlarged scale of the part of the device equipped with the tool
• Figure 3 is a longitudinal sectional view on an enlarged scale along the line III-III of Figure 2;
• Figures 4 to 8 are five schematic views showing four types of tools that can equip this device.
• the apparatus represented in the drawing comprises a motorized machine 2, on the chassis of which is pivotally mounted around a vertical axis a turret 3.
• a turret 3 On this turret 3 is pivotally mounted around a horizontal axis an arm 4 comprising three elements 5, 6, 7 articulated on each other around two horizontal axes 8 and 9.
• Angle sensors give the position of the elements relative to each other, and make it possible to maintain a plate 10 belonging to the element 7 in parallel position on the ground.
• a rotary actuator 12 On this plate 10 is mounted a rotary actuator 12, the upper part 13 of which is fixed to the plate and the part of which lower 14 is pivotally mounted on the upper part 13.
• the part 14 is integral with a housing 15 playing the role of tool holder.
• a hydraulic motor 16 whose output shaft is equipped with a pinion 17 meshing with a pinion 18 of parallel axis.
• This pinion 18 meshes, for its part, with a toothed ring 19 secured to a bush 20 pivotally mounted about a horizontal axis in the housing by means of bearings 22.
• This bush 20 driven in rotation is blocked in translation in The box.
• a hollow shaft 23 having, on its outer face, male splines 24 cooperating with female splines 25 of the sleeve 20 to ensure the rotation of the shaft 23 vis-à-vis screw of the sleeve 20 while allowing the translation of this shaft relative to the sleeve.
• the shaft 23 protrudes from the housing, and its free end has a bottom 26 allowing this shaft 23 to play the role of a cylinder.
• This cylinder is engaged on a fixed rod 27, the enlarged end 28 of which forms a piston.
• the cylinder is equipped, at its rear end, with an annular element 29 sealing around the rod 27.
• conduits 30 for the circulation of a hydraulic fluid, supply and evacuation of the delimited chambers between the hollow shaft 33, on the one hand, and the rod and the piston 28, on the other hand.
• the shaft 23 can slide relative to the bush 20 while being driven in rotation by the latter.
• the end 26 of the shaft 23 is provided with means for fixing a tool.
• this tool comprises a hub 32 for fixing on the shaft from which extend three chains 33 at the end of each of which is a counterweight 34.
• the chains 33 will take a radial position and the weights will strike the ground by making a more or less deep groove in it.
• the tool comprises a hub 35, from which extend three radial arms 36 at the end of each of which is mounted a sharp part 37.
• the tool has the general shape of a disc 38, the center 39 of which is used for attachment to the shaft, and the periphery of which has several regularly distributed teeth 40.
• FIG. 6 shows an alternative embodiment of the tool of Figure 5, this tool then being constituted by three discs 38 arranged parallel to each other, and made integral in rotation with the interposition of spacers, not shown in the drawing.
• FIGS. 7 and 8 show a third embodiment of the tool, in which a disc 41 is extended axially over an angular sector, by a cylinder section 43 and over a second angular sector by a plurality of rods 44.
• the orientation of the rods 44 varies progressively in the direction of rotation of the tool from an orientation of the rods 44 which is divergent from the axis of rotation to an orientation in which the rods 44 are parallel to this axis.
• FIG. 7 shows that three teeth 45 offset one relative to the other extend from the outside face of the section of the cylinder 43.
• the machine is first of all positioned so that the end of its arm 4 can reach the area in which the soil is to be worked. This zone is reached by playing on the articulation of the different elements 5, 6, 7 of the arm relative to each other, as well as by the rotation of the housing relative to the plate 10, so that the tool can describe a sequence of predetermined work and controlled by a computer, or can describe a work sequence under the sole initiative of the operator.
• This work sequence may include combined movements of movement of the arm and translation of the tool-holding shaft relative to the housing in which it is mounted.
• the shaft travel and frequency of movement can be controlled by a sequencer.
• the invention brings a great improvement to the existing technique by providing an apparatus for working the soil making it possible to carry out this work systematically, including in very inaccessible areas.
• the alternative translation cylinder of the tool could comprise a cylinder, or a rod in the direction of assembly, receiving at its end a thrust bearing making it possible to keep the fixed cylinder in rotation, without the this goes beyond the scope of the invention.

Applications Claiming Priority (3)

Publications (1)

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ID=8851688

Family Applications (1)

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• 2000
  • 2000-06-26 FR FR0008183A patent/FR2810497B1/fr not_active Expired - Fee Related
• 2001
  • 2001-06-25 JP JP2002506027A patent/JP2004502123A/ja active Pending
  • 2001-06-25 WO PCT/FR2001/002008 patent/WO2002001139A1/fr not_active Application Discontinuation
  • 2001-06-25 AU AU2001270657A patent/AU2001270657A1/en not_active Abandoned
  • 2001-06-25 US US10/297,678 patent/US20040050560A1/en not_active Abandoned
  • 2001-06-25 EP EP01949520A patent/EP1295080A1/de not_active Withdrawn
  • 2001-06-25 CA CA002413448A patent/CA2413448A1/fr not_active Abandoned

Non-Patent Citations (1)

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