EP2263840B1 - Floor slab cutting device for creating a groove - Google Patents

Floor slab cutting device for creating a groove Download PDF

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Publication number
EP2263840B1
EP2263840B1 EP10305636.2A EP10305636A EP2263840B1 EP 2263840 B1 EP2263840 B1 EP 2263840B1 EP 10305636 A EP10305636 A EP 10305636A EP 2263840 B1 EP2263840 B1 EP 2263840B1
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EP
European Patent Office
Prior art keywords
cutting
saws
cutting device
groove
vehicle
Prior art date
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EP10305636.2A
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German (de)
French (fr)
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EP2263840A1 (en
Inventor
Denis Vermot
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Sarl Vermot Rainurage
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Sarl Vermot Rainurage
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Publication of EP2263840A1 publication Critical patent/EP2263840A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/045—Sawing grooves in walls; sawing stones from rocks; sawing machines movable on the stones to be cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B5/00—Sawing machines working with circular or cylindrical saw blades; Components or equipment therefor
    • B27B5/10—Wheeled circular saws; Circular saws designed to be attached to tractors or other vehicles and driven by same
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
    • B28D1/04—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs
    • B28D1/048—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing with circular or cylindrical saw-blades or saw-discs with a plurality of saw blades
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/09—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges
    • E01C23/0906—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges
    • E01C23/0926—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters
    • E01C23/0933—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road for forming cuts, grooves, or recesses, e.g. for making joints or channels for markings, for cutting-out sections to be removed; for cleaning, treating, or filling cuts, grooves, recesses, or fissures; for trimming paving edges for forming, opening-out, cleaning, drying or heating cuts, grooves, recesses or, excluding forming, cracks, e.g. cleaning by sand-blasting or air-jet ; for trimming paving edges with power-driven tools, e.g. vibrated, percussive cutters rotary, e.g. circular-saw joint cutters

Definitions

  • the present invention is in the general field of building and construction, particularly in the cutting of material and the sawing of a surface such as a floor slab.
  • the invention will find a specific application in the cutting of a floor slab made of hard material, such as concrete.
  • the object of the invention is to provide a rectilinear groove through such a floor slab.
  • such a groove may notably and preferably be intended to receive drive means, such as a chain, a cable or any other means of traction or mechanical guidance, an automatic scraper, for cleaning the surface of said slab or guide a food dispenser for example.
  • drive means such as a chain, a cable or any other means of traction or mechanical guidance, an automatic scraper, for cleaning the surface of said slab or guide a food dispenser for example.
  • Such a groove may also receive electrical cables.
  • said groove must have dimensions (width and depth) allowing said drive means to be placed internally therein, with a very low degree of freedom and with a particularly reduced clearance for, on the one hand, being able to move freely and without restraint and, secondly, prevent any engagement or penetration of an object or limb, including a leg of an animal that could be injured or whose hooves would risk to be damaged.
  • This groove must, therefore, have particularly precise dimensions (to the millimeter) and a perfect surface condition (clean cut and free of asperities), both on the sides and in the bottom of this groove.
  • a cutting and sawing device of this groove must therefore make it possible to adapt its dimensions, namely width and depth, of each cut.
  • Such a device is described in the document DE 4206643 and relates to the production of grooves on an asphalt or concrete floor slab.
  • Such a device is therefore in the form of a carriage-type vehicle provided with two parallel rolling axles, for its movement, at least one of which is motorized. This vehicle receives cutting tools in the form of circular saws rotated in the front portion, upstream of the rolling means, and on one side of the machine.
  • the front tool comprises two saws, diamond-type disc, one fixed is aligned with the saw, also fixed, lying on the side.
  • An additional front saw is slidably mounted transversely along the same axis as the fixed front saw. This mobile saw allows to perform a second bleeding parallel to those performed by fixed saws.
  • all saws are movable vertically, so as to move from a high retracted position to a low cutting position, and vice versa.
  • Such a device comprises two pairs of tools, each in form of two circular saws, located at the front and on each side of the vehicle, always upstream of the rolling means.
  • the spacing of the front saws makes it possible to make two grooves of small width, but associated with the side saws, they make it possible to perform simultaneously four grooves with the same spacing.
  • the devices of the state of the art all include cutting tools to make bleeding. It is then necessary to involve other tools for excavating the remaining material between these grooves, in particular to form a groove.
  • the invention aims to overcome the drawbacks of the state of the art by providing a slab cutting device so as to provide a groove.
  • such a device is in the form of a vehicle equipped with at least two rolling axles, said device comprising cutting means movably mounted so as to move from a retracted high position to a low position of cutting, and vice versa, characterized in that said cutting means comprise, on the one hand, on one side of said vehicle at least two circular saws rotated along the same axis, so as to simultaneously provide two parallel grooves, and, on the other hand, at least one cutter rotated downstream of said saws, so as to hollow out the material between the two grooves, thereby providing a groove.
  • the present invention relates to surface cutting, in particular the production of a groove within a floor slab.
  • Such a slab is made of a hard material, very resistant, concrete type, stone or the like.
  • the invention relates to a floor slab cutter, which is in the form of a vehicle 1.
  • Such a vehicle is equipped with at least two axles 2 and 3 of rolling. Both axles 2,3 are motorized so as to allow the vehicle 1 to move on said slab.
  • the front axle 2 provided for the drive of the vehicle, the rear axle 3 is director and motor.
  • the steering rear axle 3 can advantageously be in the form of a diabolo.
  • the rear axle 3 comprises two contiguous wheels 4 mounted on the same axis of driving rotation B-B ', in the rear central part of the vehicle. As visible by the arrows represented on the figure 2 this rear axle 3 is also mounted in vertical rotation so as to change the orientation of the wheels, thus directing the vehicle 1.
  • This configuration of the diabolo-shaped rear axle 3 makes it possible to control and modify the trajectory of the vehicle quickly and accurately. vehicle 1, and thus control the linearity of the cut made.
  • said device comprises cutting means movably mounted so as to pass from a high position. retracted to a low cutting position, and vice versa.
  • This mobility can be carried out for all or part of the means, independently of each other.
  • the means can thus be partly mounted in vertical translation, but also in pivoting for another part. This mobility offers a very precise adjustment of the positioning of the tools and the resulting cut.
  • said cutting means comprise, on the one hand, on one side of said vehicle 1 at least two circular saws 5 and 6 rotated along the same axis A-A '. These two saws 5 and 6 make it possible to simultaneously provide two parallel grooves 50 and 60. Said saw 5 is located at the outer end of said axis A-A ', while the saw 6 is located between the saw 5 and the vehicle 1.
  • the device also comprises at least a third circular saw (not shown), positioned between the two other saws (5; 6), and driven in rotation along the same axis (A-A ') that these two other saws (5; 6), this to simultaneously provide at least three parallel grooves (50; 60).
  • the presence of at least one such third circular saw advantageously makes it possible, in very hard soils, to reduce the vibrations of excavation of the milling cutter 9 (vibrations that are particularly detrimental to the proper functioning, to the strength and to the life span of the circular saws, more particularly when they are made of diamond) and to limit the disturbances of the precise and fast cutting provided by the two other saws (5; 6).
  • said saws 5.6 consist of cutting disc with a hardness and thickness adapted to the material of the slab to be sawed.
  • these discs can be diamond type.
  • said cutting means comprise at least one mill 7 rotated downstream of said saws 5 and 6, so as to hollow out the material between the two grooves 50 and 60, thereby providing a groove 8.
  • said cutter 7 comprises planing lugs 9 mounted on a carrier disk 10 driven.
  • These lugs 9 are conically shaped, fixed at their base on said disk 10. They receive at their free end of an abrasive tool capable of allowing excavation, including a tungsten carbide type tool or the like.
  • said lugs 9 are arranged projecting from the periphery of the support disk 10, oriented obliquely in the opposite direction of rotation of the milling cutter 9, so as to penetrate the surface of the material situated between the two grooves 50 and 60. , the lugs 10 may be aligned or positioned staggered.
  • Another advantageous characteristic of the invention resides in the alignment of the saws 5, 6 and the cutter 9. Indeed, the latter can be strictly parallel. In other words, the planes containing the discs of the saws and the plane containing the support disc 10 are parallel to each other, thus optimizing the quality of the cut made.
  • said saws 5, 6 may be vertically movable, together or not, while the cutter 9 is pivotally mounted or also in vertical translation. This mobility makes it possible to adapt the cutting depth.
  • the spacing (spacing) between said saws 5,6 may be adjustable to adjust the width between the grooves 50 and 60.
  • the device comprises means for positioning the saws (5, 6) at different distances from one (5; 6) to the other (6; 5), for the realization of grooves (50, 60 ) spaced apart differently (50; 60) from each other (60; 50).
  • These positioning means are designed to make grooves (50, 60) spaced apart by a particularly precise distance (with a precision of the order of a millimeter) and corresponding (in a manner adjusted to the millimeter) to the dimensions of the means of training that should be arrange inside the groove 8.
  • such means for positioning the saws (5, 6) are constituted by sleeves (more particularly by a set of a plurality of sleeves) of different lengths (adapted to position a saw 6 at a determined distance from each other).
  • a further saw 5 extending along the axis (A-A '), fitted on an axle shaft (A-A') on which the saws (5, 6) are mounted, and interposed between these saws (5, 6).
  • These sleeves are interchangeable type and have a maximum length of 120mm.
  • the device comprises cutters 9 (more particularly a set of a plurality of cutters 9) whose dimensions (more particularly the width) are adapted to the different distances between the saws (5; 6). These burs 9 are preferably of interchangeable type.
  • Another feature of the invention is that the important thing is that the cutter 9 is very slightly set back from the saws 5 and 6 to have a flawless cut left by these saws (5; 6) diamond.
  • the device comprises means for mounting the cutting means (saws 5, 6 and cutter 9), this movably between a retracted high position and a low cutting position, and vice versa, this as mentioned above.
  • these means for movably mounting the cutting means are constituted by means for mounting in vertical translation (along a vertical axis) and / or pivoting (along a horizontal axis) of these cutting means (saws 5, 6 and strawberry 9).
  • this device comprises means for adjusting the position of these cutting means (saws 5, 6 and milling cutter 9) to adjust the depth of the groove 8.
  • such a setting means is associated with said means for mounting the cutting means (saws 5, 6 and cutter 9), this movably between a retracted high position and a low cutting position, and vice versa, such that above.
  • the cutting means in particular the saws 5 and 6, are lubricated.
  • This lubrication makes it possible, in particular, to cool the tools but also to facilitate cutting.
  • this lubrication is performed by spraying a fluid, such as water.
  • At least one of said axles is located between said saws 5.6 and said cutter 9. This particular positioning makes it possible to minimize the vibrations generated by the tools.
  • said front axle 2 can be located between said saws 5.6 and said cutter 9.
  • the axle 2 acts as a buffer between the two tools, improving the sharpness of the cut made.
  • the cutting device according to the invention comprises means 11 for controlling the alignment.
  • these means 11 make it possible to check the rectilinear aspect of the tracing of the grooves (50, 60) and, therefore, of the groove (8), giving the operator the possibility of visualizing the variations, however small, in the axis of movement of the vehicle 1, and compensate quickly, especially through the axle 3 rear directional diabolo.
  • said control means are in the form of a rod 12 connected frontally and extending horizontally in front of the vehicle 1.
  • This rod 12 can be pivotally mounted pivotally at the front of the chassis so as to be reassembled in a vertical storage position.
  • this rod 12 is slidably mounted on the side of the vehicle 1, in a telescopic manner, thus making it possible to control the linearity of the displacement of the vehicle 1, even when approaching an obstacle or an obstacle.
  • the attachment means 13 of the rod 12 in the sliding position are visible on the figure 1 and are in the form of square section ring for receiving, free translation, a rod of the same shape.
  • the present invention provides a cutting device allowing in a single pass, the realization of the grooves and the excavation of the material located between, so as to form a groove 8 in a single operation.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Repair (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Description

La présente invention entre dans le domaine général du bâtiment et de la construction, en particulier dans la découpe de matériau et le sciage d'une surface, telle une dalle de sol.The present invention is in the general field of building and construction, particularly in the cutting of material and the sawing of a surface such as a floor slab.

L'invention trouvera une application spécifique dans la découpe d'une dalle de sol réalisée en matériau dur, tel du béton. Le but de l'invention est de réaliser une rainure rectiligne au travers d'une telle dalle de sol.The invention will find a specific application in the cutting of a floor slab made of hard material, such as concrete. The object of the invention is to provide a rectilinear groove through such a floor slab.

Dans un cadre aucunement limitatif de sciage de la dalle de sol d'une étable, une telle rainure peut notamment, et préférentiellement, être destinée à recevoir des moyens d'entrainement, tel une chaine, un câble ou tout autre moyen de traction ou de guidage mécanique, d'un racleur automatique, permettant de nettoyer la surface de ladite dalle ou de guider un distributeur d'aliment par exemple. Une telle rainure pourra, également, recevoir des câbles électriques.In a context that is in no way limiting the sawing of the floor slab of a barn, such a groove may notably and preferably be intended to receive drive means, such as a chain, a cable or any other means of traction or mechanical guidance, an automatic scraper, for cleaning the surface of said slab or guide a food dispenser for example. Such a groove may also receive electrical cables.

Ainsi, ladite rainure doit avoir des dimensions (largeur et profondeur) permettant auxdits moyens d'entraînement d'y être placés intérieurement, ceci avec un très faible degré de liberté et avec un jeu particulièrement réduit pour, d'une part, pouvoir s'y déplacer librement et sans contrainte et, d'autre part, empêcher tout engagement ou toute pénétration d'un objet ou d'un membre, notamment d'une patte d'un animal qui pourrait s'y blesser ou dont les sabots risqueraient d'être abîmés.Thus, said groove must have dimensions (width and depth) allowing said drive means to be placed internally therein, with a very low degree of freedom and with a particularly reduced clearance for, on the one hand, being able to move freely and without restraint and, secondly, prevent any engagement or penetration of an object or limb, including a leg of an animal that could be injured or whose hooves would risk to be damaged.

Cette rainure doit, par conséquent, présenter des dimensions particulièrement précises (au millimètre près) ainsi qu'un état de surface parfait (découpe propre et dépourvue d'aspérités), aussi bien sur les côtés que dans le fond de cette rainure.This groove must, therefore, have particularly precise dimensions (to the millimeter) and a perfect surface condition (clean cut and free of asperities), both on the sides and in the bottom of this groove.

De plus et étant donné que les moyens d'entraînement peuvent se présenter sous différentes formes et adopter différentes dimensions, un dispositif de découpe et de sciage de cette rainure doit donc permettre d'adapter ses dimensions, à savoir largeur et profondeur, de chaque découpe.Moreover and since the drive means can be in different forms and adopt different dimensions, a cutting and sawing device of this groove must therefore make it possible to adapt its dimensions, namely width and depth, of each cut.

De manière connue, il existe de nombreux dispositifs de sciage de dalle de sol de manière à réaliser une ou plusieurs saignées parallèles entre elles. Ces dispositifs se présentent sous la forme d'un véhicule motorisé pourvu d'un poste de pilotage de la trajectoire du véhicule et sur lequel sont montés des outils de coupe.In a known manner, there are many devices for sawing the floor slab so as to make one or more grooves parallel to one another. These devices are in the form of a motor vehicle provided with a cockpit of the vehicle trajectory and on which are mounted cutting tools.

Un tel dispositif est décrit dans le document DE 4206643 et concerne la réalisation de saignées sur une dalle de sol en asphalte ou en béton. Un tel dispositif se présente donc sous la forme d'un véhicule de type charriot pourvu de deux essieux de roulement parallèles, pour son déplacement, dont l'un au moins est motorisé. Ce véhicule reçoit des outils de découpe en sous la forme de scies circulaires entrainée en rotation en partie frontale, en amont des moyens de roulement, et sur un côté de l'engin.Such a device is described in the document DE 4206643 and relates to the production of grooves on an asphalt or concrete floor slab. Such a device is therefore in the form of a carriage-type vehicle provided with two parallel rolling axles, for its movement, at least one of which is motorized. This vehicle receives cutting tools in the form of circular saws rotated in the front portion, upstream of the rolling means, and on one side of the machine.

Plus particulièrement, l'outil frontal comprend deux scies, de type disque diamant, dont l'une fixe est alignée avec la scie, elle aussi fixe, se trouvant sur le côté. Une scie frontale supplémentaire est montée coulissante transversalement selon le même axe que la scie frontale fixe. Cette scie mobile permet de réaliser une seconde saignée parallèle à celles réalisées par les scies fixes.More particularly, the front tool comprises two saws, diamond-type disc, one fixed is aligned with the saw, also fixed, lying on the side. An additional front saw is slidably mounted transversely along the same axis as the fixed front saw. This mobile saw allows to perform a second bleeding parallel to those performed by fixed saws.

De plus, toutes les scies sont mobiles verticalement, de manière à passer d'une position escamotée haute à une position basse de découpe, et inversement.In addition, all saws are movable vertically, so as to move from a high retracted position to a low cutting position, and vice versa.

Un autre dispositif similaire est décrit dans le document FR 2 296 055 . Un tel dispositif comprend deux paires d'outils, sous forme chacun de deux scies circulaires, situés en partie frontale et de chaque côté du véhicule, toujours en amont des moyens de roulement. L'espacement des scies frontales permettent de réaliser deux saignées de faible largeur, mais associées avec les scies latérales, elles permettent d'effectuer simultanément quatre saignées avec le même espacement.Another similar device is described in the document FR 2,296,055 . Such a device comprises two pairs of tools, each in form of two circular saws, located at the front and on each side of the vehicle, always upstream of the rolling means. The spacing of the front saws makes it possible to make two grooves of small width, but associated with the side saws, they make it possible to perform simultaneously four grooves with the same spacing.

Enfin, un autre dispositif connu est décrit dans le document US 2 855 189 et concerne un véhicule pourvu uniquement en partie frontale d'outils de coupe, en amont des moyens de roulement. Ces outils se présentent, d'une part, sous la forme d'une paire de scies circulaires montées de chaque côté de l'engin selon un même axe d'entrainement en rotation et, d'autre part, d'une scie montée en pivotement d'une position escamotée à une position de coupe, de manière à effectuer dans cette dernière position une saignée supplémentaire en amont.Finally, another known device is described in the document US 2,855,189 and relates to a vehicle provided only in front of cutting tools, upstream of the rolling means. These tools are on the one hand in the form of a pair of circular saws mounted on each side of the machine on the same axis of rotation drive and, on the other hand, a saw mounted in pivoting a retracted position to a cutting position, so as to perform in the latter position additional bleeding upstream.

Les dispositifs de l'état de la technique comprennent tous des outils de coupe afin de ménager des saignées. Il est alors nécessaire de faire intervenir d'autres outils pour l'excavation du matériau restant entre ces saignées, notamment pour former une rainure.The devices of the state of the art all include cutting tools to make bleeding. It is then necessary to involve other tools for excavating the remaining material between these grooves, in particular to form a groove.

De plus, en partie en raison du positionnement des moyens de roulement, en arrière par rapport aux outils, les saignées réalisées n'offrent pas entière satisfaction concernant leur aspect rectiligne. Aucun moyen n'est envisagé pour permettre au conducteur de conserver l'alignement de la trajectoire de coupe.In addition, partly because of the positioning of the rolling means, back relative to the tools, the bleeds made do not offer complete satisfaction regarding their rectilinear appearance. No means is envisaged to allow the driver to maintain the alignment of the cutting path.

L'invention a pour but de pallier les inconvénients de l'état de la technique en proposant un dispositif de découpe de dalle de sol de manière à ménager une rainure.The invention aims to overcome the drawbacks of the state of the art by providing a slab cutting device so as to provide a groove.

Pour ce faire, un tel dispositif se présente sous la forme d'un véhicule équipé d'au moins deux essieux de roulement, ledit dispositif comprenant des moyens de découpe montés mobiles de manière à passer d'une position haute escamotée à une position basse de découpe, et inversement, caractérisé par le fait que lesdits moyens de découpe comprennent, d'une part, sur un côté dudit véhicule au moins deux scies circulaires entrainées en rotation selon un même axe, de manière à ménager simultanément deux saignées parallèles, et, d'autre part, au moins une fraise entrainée en rotation en aval desdites scies, de manière à évider le matériau compris entre les deux saignées, ménageant ainsi une rainure.To do this, such a device is in the form of a vehicle equipped with at least two rolling axles, said device comprising cutting means movably mounted so as to move from a retracted high position to a low position of cutting, and vice versa, characterized in that said cutting means comprise, on the one hand, on one side of said vehicle at least two circular saws rotated along the same axis, so as to simultaneously provide two parallel grooves, and, on the other hand, at least one cutter rotated downstream of said saws, so as to hollow out the material between the two grooves, thereby providing a groove.

D'autres caractéristiques et avantages de l'invention ressortiront de la description détaillée qui va suivre des modes de réalisation non limitatifs de l'invention, en référence aux figures annexées dans lesquelles :

  • la figure 1 représente une vue en perspective de trois-quarts avant d'un mode de réalisation de l'invention ; et
  • la figure 2 est une vue en coupe supérieure d'un mode de réalisation dudit dispositif de découpe.
Other characteristics and advantages of the invention will emerge from the following detailed description of non-limiting embodiments of the invention, with reference to the appended figures in which:
  • the figure 1 represents a three-quarter perspective view before an embodiment of the invention; and
  • the figure 2 is a view in upper section of an embodiment of said cutting device.

La présente invention concerne la découpe de surface, en particulier la réalisation d'une rainure au sein d'une dalle de sol.The present invention relates to surface cutting, in particular the production of a groove within a floor slab.

On notera qu'une telle dalle est constituée d'un matériau dur, très résistant, de type béton, pierre ou analogue.Note that such a slab is made of a hard material, very resistant, concrete type, stone or the like.

L'invention a pour objet un dispositif de découpe de dalle de sol, se présentant sous la forme d'un véhicule 1.The invention relates to a floor slab cutter, which is in the form of a vehicle 1.

Un tel véhicule est équipé d'au moins deux essieux 2 et 3 de roulement. Les deux essieux 2,3 sont motorisés de manière à permettre le déplacement du véhicule 1 sur ladite dalle.Such a vehicle is equipped with at least two axles 2 and 3 of rolling. Both axles 2,3 are motorized so as to allow the vehicle 1 to move on said slab.

En particulier, selon le mode de réalisation préférentielle représenté sur les figures, l'essieu avant 2 en prévu pour l'entrainement du véhicule, l'essieu arrière 3 est directeur et moteur.In particular, according to the preferred embodiment shown in the figures, the front axle 2 provided for the drive of the vehicle, the rear axle 3 is director and motor.

A ce titre, l'essieu arrière directeur 3 peut avantageusement se présenter sous la forme d'un diabolo. En d'autres termes, l'essieu arrière 3 comprend deux roues 4 contiguës montées sur un même axe de rotation d'entrainement B-B', en partie centrale arrière du véhicule. Comme visible par les flèches représentées sur la figure 2, cet essieu arrière 3 est aussi monté en rotation verticale de manière à changer l'orientation des roues, dirigeant ainsi le véhicule 1. Cette configuration de l'essieu arrière 3 en forme de diabolo permet de contrôler et modifier rapidement et précisément la trajectoire du véhicule 1, et ainsi maîtriser la linéarité de la coupe effectuée.As such, the steering rear axle 3 can advantageously be in the form of a diabolo. In other words, the rear axle 3 comprises two contiguous wheels 4 mounted on the same axis of driving rotation B-B ', in the rear central part of the vehicle. As visible by the arrows represented on the figure 2 this rear axle 3 is also mounted in vertical rotation so as to change the orientation of the wheels, thus directing the vehicle 1. This configuration of the diabolo-shaped rear axle 3 makes it possible to control and modify the trajectory of the vehicle quickly and accurately. vehicle 1, and thus control the linearity of the cut made.

Avantageusement, ledit dispositif comprend des moyens de découpe montés mobiles de manière à passer d'une position haute escamotée à une position basse de découpe, et inversement. Cette mobilité peut s'effectuer pour toute ou partie des moyens, indépendamment les uns des autres. Les moyens peuvent ainsi être en partie montés en translation verticale, mais aussi en pivotement pour une autre partie. Cette mobilité offre un réglage très précis du positionnement des outils et de la découpe obtenue.Advantageously, said device comprises cutting means movably mounted so as to pass from a high position. retracted to a low cutting position, and vice versa. This mobility can be carried out for all or part of the means, independently of each other. The means can thus be partly mounted in vertical translation, but also in pivoting for another part. This mobility offers a very precise adjustment of the positioning of the tools and the resulting cut.

De plus, lesdits moyens de découpe comprennent, d'une part, sur un côté dudit véhicule 1 au moins deux scies circulaires 5 et 6 entrainées en rotation selon un même axe A-A'. Ces deux scies 5 et 6 permettent de ménager simultanément deux saignées parallèles 50 et 60. Ladite scie 5 se situe à l'extrémité extérieure dudit axe A-A', tandis que la scie 6 est située entre la scie 5 et le véhicule 1.In addition, said cutting means comprise, on the one hand, on one side of said vehicle 1 at least two circular saws 5 and 6 rotated along the same axis A-A '. These two saws 5 and 6 make it possible to simultaneously provide two parallel grooves 50 and 60. Said saw 5 is located at the outer end of said axis A-A ', while the saw 6 is located between the saw 5 and the vehicle 1.

Selon une autre caractéristique, le dispositif comporte, encore, au moins une troisième scie circulaire (non représentée), positionnée entre les deux autres scies (5 ; 6), et entraînée en rotation selon le même axe (A-A') que ces deux autres scies (5 ; 6), ceci pour ménager simultanément au moins trois saignées parallèles (50 ; 60).According to another characteristic, the device also comprises at least a third circular saw (not shown), positioned between the two other saws (5; 6), and driven in rotation along the same axis (A-A ') that these two other saws (5; 6), this to simultaneously provide at least three parallel grooves (50; 60).

La présence d'au moins une telle troisième scie circulaire permet, avantageusement, dans les sols très durs, de réduire les vibrations d'excavation de la fraise 9 (vibrations particulièrement préjudiciables au bon fonctionnement, à la tenue et à la durée de vie des scies circulaires, plus particulièrement lorsque celles-ci sont en diamant) et de limiter les perturbations de la découpe précise et rapide assurée par les deux autres scies (5 ; 6).The presence of at least one such third circular saw advantageously makes it possible, in very hard soils, to reduce the vibrations of excavation of the milling cutter 9 (vibrations that are particularly detrimental to the proper functioning, to the strength and to the life span of the circular saws, more particularly when they are made of diamond) and to limit the disturbances of the precise and fast cutting provided by the two other saws (5; 6).

On notera que lesdites scies 5,6 se composent de disque de découpe offrant une dureté et une épaisseur adaptées au matériau de la dalle à scier. En particulier, ces disques peuvent être de type diamant.Note that said saws 5.6 consist of cutting disc with a hardness and thickness adapted to the material of the slab to be sawed. In particular, these discs can be diamond type.

D'autre part, lesdits moyens de découpe comprennent au moins une fraise 7 entrainée en rotation en aval desdites scies 5 et 6, de manière à évider le matériau compris entre les deux saignées 50 et 60, ménageant ainsi une rainure 8.On the other hand, said cutting means comprise at least one mill 7 rotated downstream of said saws 5 and 6, so as to hollow out the material between the two grooves 50 and 60, thereby providing a groove 8.

Selon le mode de réalisation représenté sur la figure 1, ladite fraise 7 comprend des ergots 9 de rabotage montés sur un disque support 10 entrainé. Ces ergots 9 sont de forme conique, fixés à leur base sur ledit disque 10. Ils reçoivent à leur extrémité libre d'un outil abrasif apte à permettre l'excavation, notamment un outil de type carbure tungstène ou analogue. De plus, lesdits ergots 9 sont ménagés en saillie du pourtour du disque support 10, orientés en biais dans le sens inverse de rotation du la fraise 9, de manière à pénétrer la surface du matériau situé entre les deux saignées 50 et 60. De plus, les ergots 10 peuvent être alignés ou positionnés de quinconce.According to the embodiment shown on the figure 1 , said cutter 7 comprises planing lugs 9 mounted on a carrier disk 10 driven. These lugs 9 are conically shaped, fixed at their base on said disk 10. They receive at their free end of an abrasive tool capable of allowing excavation, including a tungsten carbide type tool or the like. In addition, said lugs 9 are arranged projecting from the periphery of the support disk 10, oriented obliquely in the opposite direction of rotation of the milling cutter 9, so as to penetrate the surface of the material situated between the two grooves 50 and 60. , the lugs 10 may be aligned or positioned staggered.

Une autre caractéristique avantageuse de l'invention réside dans l'alignement des scies 5,6 et de la fraise 9. En effet, ces dernières peuvent être strictement parallèles. En d'autres termes, les plans contenant les disques des scies et le plan contenant le disque support 10 sont parallèles entre eux, optimisant ainsi la qualité de la découpe effectuée.Another advantageous characteristic of the invention resides in the alignment of the saws 5, 6 and the cutter 9. Indeed, the latter can be strictly parallel. In other words, the planes containing the discs of the saws and the plane containing the support disc 10 are parallel to each other, thus optimizing the quality of the cut made.

Concernant la mobilité des moyens de découpe, comme évoqué précédemment, lesdites scies 5, 6 peuvent être mobiles verticalement, conjointement ou non, tandis que la fraise 9 est montée en pivotement ou elle aussi en translation verticale. Cette mobilité permet d'adapter la profondeur de découpe.Regarding the mobility of the cutting means, as mentioned above, said saws 5, 6 may be vertically movable, together or not, while the cutter 9 is pivotally mounted or also in vertical translation. This mobility makes it possible to adapt the cutting depth.

De plus, l'espacement (écartement) entre lesdites scies 5,6 peut être prévu réglable afin d'adapter la largeur entre les saignées 50 et 60.In addition, the spacing (spacing) between said saws 5,6 may be adjustable to adjust the width between the grooves 50 and 60.

Pour ce faire, le dispositif comporte des moyens pour le positionnement des scies (5, 6) à différentes distances l'une (5 ; 6) de l'autre (6 ; 5), ceci pour la réalisation de saignées (50, 60) parallèles différemment espacées l'une (50 ; 60) de l'autre (60 ; 50).To do this, the device comprises means for positioning the saws (5, 6) at different distances from one (5; 6) to the other (6; 5), for the realization of grooves (50, 60 ) spaced apart differently (50; 60) from each other (60; 50).

Ces moyens de positionnement sont conçus pour réaliser des saignées (50, 60) espacées entre elles d'une distance particulièrement précise (avec une précision de l'ordre du millimètre) et correspondant (de manière ajustée au millimètre) aux dimensions des moyens d'entraînement qu'il convient de disposer à l'intérieur de la rainure 8.These positioning means are designed to make grooves (50, 60) spaced apart by a particularly precise distance (with a precision of the order of a millimeter) and corresponding (in a manner adjusted to the millimeter) to the dimensions of the means of training that should be arrange inside the groove 8.

Selon l'invention, de tels moyens de positionnement des scies (5, 6) sont constitués par des manchons (plus particulièrement par un jeu d'une pluralité de manchons) de longueurs différentes (adaptée pour positionner une scie 6 à une distance déterminée d'une autre scie 5), s'étendant selon l'axe (A-A'), emmanchés sur un arbre d'axe (A-A') sur lequel les scies (5, 6) sont montées, et interposés entre ces scies (5, 6).According to the invention, such means for positioning the saws (5, 6) are constituted by sleeves (more particularly by a set of a plurality of sleeves) of different lengths (adapted to position a saw 6 at a determined distance from each other). a further saw 5), extending along the axis (A-A '), fitted on an axle shaft (A-A') on which the saws (5, 6) are mounted, and interposed between these saws (5, 6).

Ces manchons sont de type interchangeable et présentent une longueur maximum de 120mm.These sleeves are interchangeable type and have a maximum length of 120mm.

Dès lors que l'on modifie l'écartement entre les scies (5, 6), il convient d'adapter la taille de la fraise 9 pour permettre l'excavation du matériau situé entre les saignées (50, 60).As soon as the spacing between the saws (5, 6) is modified, it is necessary to adapt the size of the cutter 9 to allow the excavation of the material located between the grooves (50, 60).

Pour ce faire, le dispositif comporte des fraises 9 (plus particulièrement un jeu d'une pluralité de fraises 9) dont les dimensions (plus particulièrement la largeur) sont adaptées aux différentes distances entre les scies (5 ; 6). Ces fraises 9 sont, de préférence, de type interchangeable.To do this, the device comprises cutters 9 (more particularly a set of a plurality of cutters 9) whose dimensions (more particularly the width) are adapted to the different distances between the saws (5; 6). These burs 9 are preferably of interchangeable type.

Une autre caractéristique de l'invention consiste en ce que l'important est que cette fraise 9 soit très légèrement en retrait des scies 5 et 6 pour avoir une coupe impeccable laissée par ces scies (5 ; 6) diamantées.Another feature of the invention is that the important thing is that the cutter 9 is very slightly set back from the saws 5 and 6 to have a flawless cut left by these saws (5; 6) diamond.

Selon une caractéristique additionnelle de l'invention, le dispositif comporte des moyens pour le montage des moyens de découpe (scies 5, 6 et fraise 9), ceci de manière mobile entre une position haute escamotée et une position basse de découpe, et inversement, ceci tel que susmentionné.According to an additional feature of the invention, the device comprises means for mounting the cutting means (saws 5, 6 and cutter 9), this movably between a retracted high position and a low cutting position, and vice versa, this as mentioned above.

En fait, ces moyens de montage de manière mobile des moyens de découpe sont constitués par des moyens de montage en translation verticale (selon un axe vertical) et/ou en pivotement (selon un axe horizontal) de ces moyens de découpe (scies 5, 6 et fraise 9).In fact, these means for movably mounting the cutting means are constituted by means for mounting in vertical translation (along a vertical axis) and / or pivoting (along a horizontal axis) of these cutting means (saws 5, 6 and strawberry 9).

De plus, ce dispositif comporte un moyen pour le réglage de la position de ces moyens de découpe (scies 5, 6 et fraise 9), ceci en vue du réglage de la profondeur de la rainure 8.In addition, this device comprises means for adjusting the position of these cutting means (saws 5, 6 and milling cutter 9) to adjust the depth of the groove 8.

En fait, un tel moyen de réglage est associé auxdits moyens de montage des moyens de découpe (scies 5, 6 et fraise 9), ceci de manière mobile entre une position haute escamotée et une position basse de découpe, et inversement, ceci tel que susmentionné.In fact, such a setting means is associated with said means for mounting the cutting means (saws 5, 6 and cutter 9), this movably between a retracted high position and a low cutting position, and vice versa, such that above.

On observera que les caractéristiques (susmentionnées) de ces moyens de montage (translation verticale et/ou pivotement) et la présence de ce moyen de réglage permettent, avantageusement, d'offrir un réglage très précis du positionnement des outils et de la découpe obtenue. Ceci permet, en particulier, d'usiner une rainure 8 dont la profondeur est réalisée avec une précision de l'ordre du millimètre, plus particulièrement pour correspondre (de manière ajustée au millimètre) aux dimensions des moyens d'entraînement qu'il convient de disposer à l'intérieur de cette rainure 8.It will be observed that the characteristics (mentioned above) of these mounting means (vertical translation and / or pivoting) and the presence of this adjustment means advantageously make it possible to offer a very precise adjustment of the positioning of the tools and the cut obtained. This allows, in particular, to machine a groove 8 whose depth is made with an accuracy of the order of a millimeter, more particularly to correspond (in a manner adjusted to the millimeter) to the dimensions of the drive means that should be arrange inside this groove 8.

On notera qu'au cours de la découpe, les moyens de découpe, en particulier les scies 5 et 6, sont lubrifiées. Cette lubrification permet, notamment, de refroidir les outils mais aussi de faciliter la découpe. Selon le mode préférentiel de réalisation, cette lubrification est effectuée par projection d'un fluide, comme de l'eau.It will be noted that during cutting, the cutting means, in particular the saws 5 and 6, are lubricated. This lubrication makes it possible, in particular, to cool the tools but also to facilitate cutting. According to the preferred embodiment, this lubrication is performed by spraying a fluid, such as water.

Selon une autre caractéristique, au moins un desdits essieux est situé entre lesdites scies 5,6 et ladite fraise 9. Ce positionnement particulier permet de minimiser les vibrations générées par les outils. En particulier, ledit essieu avant 2 peut être situé entre lesdites scies 5,6 et ladite fraise 9. Ainsi, l'essieu 2 joue un rôle d'amortisseur entre les deux outils, améliorant la netteté de la découpe effectuée.According to another characteristic, at least one of said axles is located between said saws 5.6 and said cutter 9. This particular positioning makes it possible to minimize the vibrations generated by the tools. In particular, said front axle 2 can be located between said saws 5.6 and said cutter 9. Thus, the axle 2 acts as a buffer between the two tools, improving the sharpness of the cut made.

Par ailleurs, le dispositif de découpe selon l'invention comprend des moyens 11 de contrôle de l'alignement. En particulier, ces moyens 11 permettent de vérifier l'aspect rectiligne du tracé des saignées (50, 60) et, donc, de la rainure (8), donnant à l'opérateur la possibilité de visualiser les variations, même minimes, dans l'axe de déplacement du véhicule 1, et de les compenser rapidement, notamment au travers de l'essieu 3 directionnel arrière en forme de diabolo.Furthermore, the cutting device according to the invention comprises means 11 for controlling the alignment. In particular, these means 11 make it possible to check the rectilinear aspect of the tracing of the grooves (50, 60) and, therefore, of the groove (8), giving the operator the possibility of visualizing the variations, however small, in the axis of movement of the vehicle 1, and compensate quickly, especially through the axle 3 rear directional diabolo.

Selon le mode de réalisation représenté sur la figure 2, lesdits moyens de contrôle se présentent sous la forme d'une tige 12 reliée frontalement et s'étendant horizontalement en avant du véhicule 1. Cette tige 12 peut être montée articulée en pivotement au niveau de l'avant du châssis de manière à être remontée dans une position de rangement verticale.According to the embodiment shown on the figure 2 , said control means are in the form of a rod 12 connected frontally and extending horizontally in front of the vehicle 1. This rod 12 can be pivotally mounted pivotally at the front of the chassis so as to be reassembled in a vertical storage position.

Selon un autre mode de réalisation, cette tige 12 est montée coulissante sur le côté du véhicule 1, de manière télescopique, permettant ainsi de contrôler la linéarité du déplacement du véhicule 1, même en cas d'approche d'un obstacle ou d'un mur. Les moyens d'attache 13 de la tige 12 en position coulissante sont visible sur la figure 1 et se présentent sous la forme d'anneau de section carrée destiné à recevoir, libre en translation, une tige de même forme.According to another embodiment, this rod 12 is slidably mounted on the side of the vehicle 1, in a telescopic manner, thus making it possible to control the linearity of the displacement of the vehicle 1, even when approaching an obstacle or an obstacle. Wall. The attachment means 13 of the rod 12 in the sliding position are visible on the figure 1 and are in the form of square section ring for receiving, free translation, a rod of the same shape.

A ce titre, on notera que sur la figure 1 n'est présent qu'une seule scie, à savoir la scie intérieure 6.As such, it will be noted that on the figure 1 only one saw is present, namely the internal saw 6.

Ainsi, la présente invention offre un dispositif de découpe permettant en un seul passage, la réalisation des saignées et l'excavation du matériau situé entre, de manière à former une rainure 8 en une seule opération.Thus, the present invention provides a cutting device allowing in a single pass, the realization of the grooves and the excavation of the material located between, so as to form a groove 8 in a single operation.

De plus, il permet un contrôle de la linéarité du déplacement du véhicule 1 et affine l'aspect rectiligne de la rainure 8 obtenue.In addition, it allows a control of the linearity of the displacement of the vehicle 1 and refines the rectilinear aspect of the groove 8 obtained.

Claims (15)

  1. A device for cutting a groove in a floor slab, which is in the form of a vehicle (1) equipped with at least two rolling axles (2, 3), said device comprising cutting means mounted movably so as to move from a retracted high position to a low cutting position, and vice versa, wherein said cutting means comprise, on the one hand, on one side of said vehicle (1), at least two circular saws (5, 6) driven in rotation along the same axis (A-A'), so as to simultaneously provide two parallel cuts (50, 60) and, on the other hand, at least one milling cutter (7) driven in rotation downstream of said saws (5, 6) so as to remove the material between the two cuts (50, 60), thus forming a groove (8).
  2. The cutting device according to claim 1, wherein it includes at least a third circular saw positioned between the other two saws (5; 6) and driven in rotation along the same axis (A-A') as these two saws (5; 6), this in order simultaneously provide at least three parallel cuts.
  3. Cutting device according to any one of claims 1 or 2, wherein it includes means for positioning the saws (5, 6) at different distances one (5; 6) from the other (6; 5), this for carrying out parallel cuts (50, 60) spaced differently one (50; 60) from the other (60; 50).
  4. Cutting device according to claim 3, wherein the means for positioning the saws (5, 6) are formed of sleeves of different lengths extending along the axis (A-A'), fitted onto a shaft with an axis (A-A') on which the saws (5, 6) are mounted, and interposed between these saws (5, 6), these sleeves being namely of an interchangeable type.
  5. Cutting device according to any one of claims 3 or 4, wherein it includes milling cutters (7) the dimensions of which are adapted to the different distances between the saws (5; 6), these milling cutters (7) being namely of an interchangeable type.
  6. Cutting device according to any one of the preceding claims, wherein it includes means for mounting the cutting means, this movably between a retracted high position and a low cutting position, and vice versa, said mounting means being formed of means for mounting these cutting means in vertical translation and/or in pivoting.
  7. Cutting device according to any one of the preceding claims, wherein it includes means for adjusting the position of the cutting means, this in order to adjust the depth of the groove (8).
  8. Cutting device according to claims 6 and 7, wherein the means for adjusting the position of the cutting means is associated with means for mounting the cutting means, this movably between a retracted high position and a low cutting position, and vice versa, the device includes.
  9. Cutting device according to any one of the preceding claims, wherein said saws (5, 6) and said milling cutter (7) are strictly parallel.
  10. Cutting device according to any one of the preceding claims, wherein the milling cutter (9) is slightly withdrawn from the saws (5, 6).
  11. Cutting device according to any one of the preceding claims, wherein at least one of said axles (2, 3) is located between said saws (5, 6) and said milling cutter (7).
  12. Cutting device according to claim 11, wherein said axle located between said saws (5, 6) and said milling cutter (7) is the driving front axle (2).
  13. Cutting device according to any one of the preceding claims, wherein said rear axle (3) is leading and is in the form of a twin-wheel axle (4).
  14. Cutting device according to any one of the preceding claims, wherein it includes means (11) for controlling the alignment permitting to check the rectilinear aspect of the cutting paths (50, 60) and, hence, of the groove (8).
  15. Cutting device according to claim 14, wherein the means (11) for controlling the alignment are in the form of a rod (12) either connected frontally and extending horizontally in front of the vehicle (1), or slidably and telescopically mounted on the side of the vehicle (1).
EP10305636.2A 2009-06-16 2010-06-15 Floor slab cutting device for creating a groove Active EP2263840B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0902935A FR2946559B1 (en) 2009-06-16 2009-06-16 DEVICE FOR CUTTING SOIL SLAB TO MANAGE A GROOVE

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EP2263840A1 EP2263840A1 (en) 2010-12-22
EP2263840B1 true EP2263840B1 (en) 2015-08-12

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SE538437C2 (en) * 2014-11-21 2016-06-28 Dellcron Ab Piping machine with additional functions for placing pipes / cables in micro-ditches

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Publication number Priority date Publication date Assignee Title
US2855189A (en) * 1950-12-23 1958-10-07 Cutcrete Mfg Company Concrete sawing machine for making parallel grooves
US3464737A (en) * 1967-09-11 1969-09-02 Robert G Evans Co Road grooving apparatus
IT1024097B (en) * 1974-12-23 1978-06-20 Verdini Sergio MACHINE FOR PERFORMING TWO CONTEMPORARY CUTS ON FALTO, CONCRETE AND SIMILAR, WITH VARIABLE DISTANCE OF THE BLADES OR CUTTING DISCS
GB1581871A (en) * 1976-04-30 1980-12-31 Amerace Corp Snowplowable road marker and method and apparatus for installing same
US4662684A (en) * 1979-12-13 1987-05-05 H. B. Zachery Corporation Rotary rock and trench cutting saw
DE4206643C2 (en) 1992-03-03 1998-04-09 Klaus Ihle Joint cutters for road surfaces or the like
DE9409248U1 (en) * 1994-06-08 1994-09-29 Kruchten, Josef, 54314 Vierherrenborn Mobile road construction equipment
JP2008505784A (en) * 2004-07-09 2008-02-28 エレクトロラックス プロフェッショナル アウトドア プロダクツ インコーポレイテッド Track drive adjustment for concrete saws
NL2000239C2 (en) * 2006-09-18 2008-03-19 Reproad B V Device and method for widening an existing road surface.

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FR2946559B1 (en) 2011-07-15
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