EP0282381B1 - Road regeneration plant - Google Patents

Road regeneration plant Download PDF

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Publication number
EP0282381B1
EP0282381B1 EP88400357A EP88400357A EP0282381B1 EP 0282381 B1 EP0282381 B1 EP 0282381B1 EP 88400357 A EP88400357 A EP 88400357A EP 88400357 A EP88400357 A EP 88400357A EP 0282381 B1 EP0282381 B1 EP 0282381B1
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EP
European Patent Office
Prior art keywords
workshop
milling
devices
rotor
binder
Prior art date
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Expired - Lifetime
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EP88400357A
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German (de)
French (fr)
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EP0282381A1 (en
Inventor
Roger Guillon
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Beugnet SA
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Beugnet SA
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Publication date
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Priority to AT88400357T priority Critical patent/ATE56059T1/en
Publication of EP0282381A1 publication Critical patent/EP0282381A1/en
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Classifications

    • 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
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/30—Tamping or vibrating apparatus other than rollers ; Devices for ramming individual paving elements
    • E01C19/34—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight
    • E01C19/40—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers
    • E01C19/405—Power-driven rammers or tampers, e.g. air-hammer impacted shoes for ramming stone-sett paving; Hand-actuated ramming or tamping machines, e.g. tampers with manually hoisted dropping weight adapted to impart a smooth finish to the paving, e.g. tamping or vibrating finishers with spreading-out, levelling or smoothing means other than the tamping or vibrating means for compacting or smoothing, e.g. with screws for spreading-out the previously dumped material, with non-vibratory lengthwise reciprocated smoothing beam
    • 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
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
    • 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
    • E01C23/08—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades
    • E01C23/085—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 roughening or patterning; for removing the surface down to a predetermined depth high spots or material bonded to the surface, e.g. markings; for maintaining earth roads, clay courts or like surfaces by means of surface working tools, e.g. scarifiers, levelling blades using power-driven tools, e.g. vibratory tools
    • E01C23/088—Rotary tools, e.g. milling drums
    • 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
    • E01C2301/00—Machine characteristics, parts or accessories not otherwise provided for
    • E01C2301/50—Methods or devices for preventing dust by spraying or sucking

Definitions

  • the present invention relates to a pavement regeneration workshop, capable of moving over the latter in order to regenerate the asphalt cold, which may consist of bituminous concrete, gravel in the form of an emulsion, gravel bitumen, etc. ...
  • These devices which allow a reinforcement "in situ" of a roadway generally consist of a self-propelled vehicle comprising, in the direction of travel, milling members, kneading members of milled products with the addition of a regeneration binder , as well as distributing members on the pavement of the coated materials thus treated, and smoothing and precompacting members.
  • the regeneration binder used is most often constituted by bitumen, an emulsion, fluxed bitumen or any other hydrocarbon binder.
  • the object of the present invention is to remedy these drawbacks by proposing a pavement regeneration workshop of the above type, characterized in that the milling members are constituted by a milling rotor movable transversely or first rotor, and by a fixed milling rotor or second rotor disposed behind the first rotor, in the direction of advancement of the vehicle, these two rotors, each arranged in a decohesion chamber provided with decohesion bars being constituted by a drive tube disposed substantially transversely to the direction of advance and on which are welded three turns each provided with a series of teeth.
  • the teeth of the turns are most often provided with tungsten carbide tips.
  • the decohesion bars arranged in the two decohesion chambers have, conventionally, the purpose of limiting the passage between the rotor and the casing, so as to allow the bursting of the coated materials.
  • a mobile decohesion bar mounted at the bottom of the decohesion chambers and associated with an adjustable system, making it possible to limit the height by ground, and reduce the distance between it and the tips of the teeth.
  • the two decohesion chambers are provided, at their front part, with water injections capable of cooling the teeth and fixing the dust.
  • the first milling rotor is provided with an impeller fed by the turns of this rotor which projects the products milled by the latter into a chute which transfers them to the decohesion chamber of the second milling rotor.
  • This characteristic is likely to significantly improve the transport of milled products.
  • the kneading members supplied by the turns of the second rotor, consist of a kneading tank provided, at its front part, with an injection ramp for the hydrocarbon regeneration binder to a flow proportional to the flow of milled products as well as two kneading shafts arranged longitudinally relative to the direction of the vehicle and on which arms are mounted, in particular provided with interchangeable paddles arranged so as to constitute a turn which, while strongly kneading the products coming from the decohesion chamber of the second milling rotor, rejects them at the rear of the vehicle in front of the distribution members.
  • the kneading tank is provided with a double-jacketed bottom furnished with wear plates of special cast iron and the internal space of which is heated by the exhaust gases of the vehicle, in particular of the Diippoel vehicle.
  • This characteristic is likely to reduce the cost price of the treatment in accordance with the invention.
  • the workshop comprises, below the mixing tank, a spreading ramp on the floor, before distribution of the regenerated mixes with a bonding layer constituted by a hydrocarbon binder.
  • This binder is essential to obtain a satisfactory pavement after treatment.
  • the ramp for spreading the hydrocarbon binder of the bonding layer is constituted by at least one carriage provided with an injector which scans the milled surface transversely to distribute therein a homogeneous layer of hydrocarbon binder to a flow proportional to the surface to be treated.
  • suction members mounted behind the two milling rotors in the direction of movement suck up the dust produced during milling, thus ensuring cleaning of the pavement and allowing the binder of the bonding layer to ensure satisfactory bonding between the milled pavement and the regenerated asphalt.
  • the distribution members on the pavement of the regenerated asphalt consist of a right distribution screw and a left distribution screw, as well as by a vibrating smoothing table adjustable in height and provided with reheating which distributes and compacts the regenerated asphalt, this table being provided with tamping knives whose alternating vertical displacement ensures pre-compaction.
  • the members for reheating the smoothing surface can be any according to the invention (either gas, oil, or electric).
  • the vibrating smoothing table is carried, at its two upper ends, by two arms articulated on the chassis of the machine, the anchoring points of these joints being mounted on slides and capable of be adjusted in height by means of jacks.
  • cylinders can be controlled either manually via solenoid valves or automatically via an automatic leveling system.
  • this system can operate either with an altimetry probe on each side of the vehicle, or with a probe on the left and a slope detector, or with a probe on the right and a slope detector.
  • the kneading members as well as the distribution members are mounted on a carriage allowing the rear of the vehicle to be released.
  • This configuration allows the rear of the vehicle to be cleared to facilitate maintenance and, if necessary, troubleshooting.
  • the workshop includes an electronic computer capable of regulating the water distribution pumps, the bonding binder and the regeneration binder from the reference values of the contents in these three materials per square meter or cubic meter, the working width and the density of milled materials, as well as information transmitted by an electronic system which measures the forward speed of the vehicle, and by an altimetry sensor on the right which gives the height of the milling on the right and an altimetry probe on the left which gives the height of the milling on the left.
  • the computer sends instructions to the plates of the DC motors which drive each of the pumps.
  • the flow of water is proportional to the volume of the treated materials, resulting in a constant weight dosage, while the flow of bonding binder is proportional to the surface treated and the flow of regeneration binder proportional to the volume treated materials.
  • the workshop includes an air flush which, at each stop of the vehicle and after delay, empties the injection pipes of the regeneration binder and the binder of the bonding layer so that these two binders do not freeze in the injection pipes.
  • the workshop is constituted by a self-propelled vehicle controlled by a Diippoel engine 1 and whose carrier chassis 2 rests on two front tracks 3, 3 'and two rear tracks 4, 4'.
  • This vehicle successively comprises, in the direction of travel A, milling members I, mixing members II, members III for distributing the coated materials on the roadway once treated and smoothing and precompaction members IV.
  • the milling members 1 are constituted by a first milling rotor 5 movable transversely along the arrow B as indicated by dotted lines in FIG. 1, and by a second fixed milling rotor 6 disposed behind the first milling rotor 5, parallel to this one.
  • each of the rotors 5, 6 is arranged in a decohesion chamber 5 ', 6'.
  • These rotors 5, 6 each consist of a drive tube 50, 60 disposed substantially transversely to the direction of advance A ( Figure 1) on which are welded three turns each provided with a series of teeth 7 provided with carbide tungsten tips.
  • the decohesion chambers 5 ′, 6 ′ are provided with decohesion bars 8, 8 ′, 10, 10 ′ having the aim of limiting the passage left free for milling products between the casings and the rotors of milling 5, 6 so as to allow the bursting of the coated materials.
  • the decohesion bars 8 and 8 ′ are fixed while the decohesion bars 10.
  • 10 ′ arranged at the lower front part of the decohesion chambers 5 ′ and 6 ′ are associated with members adjustment not shown which limit their height from the ground XX 'and reduce the distance between these bars 10 and 10' of the teeth of the milling rotors 5 and 6 and thus avoid the lifting of the asphalt plates.
  • the decohesion chambers 5 ′, 6 ′ are also respectively provided with cleaning and pickup blades 9, 9 ′ which cooperate with suction members not shown mounted behind the milling rotors 5 and 6 in the direction of movement. to suck up the dust produced during milling, thus ensuring cleaning of the pavement allowing satisfactory adhesion of a bonding binder which will be described in more detail in the remainder of this description.
  • the two decohesion chambers 5 ′ and 6 ′ are, moreover, provided with water injectors, not shown, the purpose of which is to cool the teeth 7 and fix the dust.
  • the first milling rotor 5 cooperates, moreover, with an impeller fed by the turns of this rotor which projects the products milled by it into a chute 11 which transfers them to the decohesion chamber 6 'of the second milling rotor 6.
  • the kneading members II which are supplied by the turns of the second milling rotor 6 'are constituted by a kneading tank 12 containing two kneading shafts 13, 13' arranged parallel and longitudinally relative to to the direction A of movement of the vehicle.
  • Each of these shafts 13, 13 ′ carries arms 14 at the ends of which are interchangeable pallets 15 arranged so as to constitute a turn which, while strongly kneading the products coming from the decohesion chamber 6 ′ of the second milling rotor 6, rejects them at the rear of the vehicle, in front of the distribution components III.
  • the mixing tank 12 is, moreover, provided, at its front part, with an injection ramp 16 of a regeneration binder which may consist of bitumen, an emulsion, fluxed bitumen or any other hydrocarbon binder; the flow of this ramp must, of course, be proportional to the flow of milling products introduced into the tank 12.
  • a hatch 17 ( Figure 2) mounted at the rear of the tank 12 keeps the level of products in this the latter regardless of the forward speed and, consequently, improve the quality of the mixing.
  • the tank 12 is provided with a bottom 18 with a double envelope which is lined with wear plates of special cast iron and the internal space of which is heated by the exhaust gas Diippoel of the vehicle or by a heat transfer fluid.
  • a ramp 19 provided below the tank 12 also makes it possible to spread on the road X-X ′, after milling, but before distribution of the regenerated coated materials, a bonding layer constituted by a hydrocarbon binder.
  • this ramp 19 Given the low flow rates to be distributed by this ramp 19, it is actually constituted by a carriage not shown provided with an injector which moves transversely on a slide in order to spread over the milled surface, a homogeneous layer of binder hydrocarbon at a rate proportional to the surface to be treated.
  • the distribution members III on the roadway XX ′ of the regenerated coated materials are mainly constituted by a distribution screw 20.
  • the smoothing and precompacting members IV mainly consist of a vibrating smoothing table 21 adjustable in height and provided with heating elements 22 of its lower surface 23 which distributes smooth and compacts the regenerated mixes.
  • the distribution screw 20 is broken down into a right part 24 and a left part 25 which make it possible to spread the product on the road XX ′.
  • the vibrating table 21 is carried at its two upper ends by two arms 26, 26 'which are articulated on the chassis 2 of the vehicle by their ends 27; the anchoring points of these articulations 27 are mounted on slides not shown and are capable of being adjusted in height by means of jacks 28.
  • These jacks 28 can either be controlled manually by means of solenoid valves or automatically through an automatic leveling system.
  • a cylinder 29 is, moreover, mounted between the chassis 2 of the vehicle and the upper part of the arms 26, 26 'to allow the lifting of the table 21 during transfers.
  • This table 21 is, moreover, provided at its front part with tamping knives 30, the reciprocating vertical displacement of which provides precompaction.
  • This table 21 is also provided with a vibration system which ensures correct work of the smoothing surface 23.
  • the kneading members II as well as the distribution members III are mounted on a carriage which makes it possible to free the rear of the vehicle to facilitate maintenance and troubleshooting.
  • the flow rates of the water distribution pumps 31 as well as the distribution pumps for the bonding binder 32 and the regeneration binder 33 are automatically controlled by an electronic computer not shown from the setpoint values of the contents in three aforementioned materials per square meter or cubic meter, working width, density of milled materials as well as information transmitted by an electronic system which measures the forward speed of the vehicle and by an altimetry sensor on the right which gives the height of the milling on the right and an altimetry probe on the left which gives the height of the milling on the left.
  • an air flush allows each stop of the vehicle and after delay to empty the injection pipes of the regeneration binder and the binder of the bonding layer so that these two binders not freeze in the injection pipes, these pipes themselves being heated by a network of electrical resistances or a heat transfer fluid.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Road Repair (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Solid-Sorbent Or Filter-Aiding Compositions (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Regulating Braking Force (AREA)
  • Crushing And Grinding (AREA)
  • Road Paving Structures (AREA)

Abstract

1. Workshop for regenerating a road, capable of moving on the latter to regenerate the surfacing on it, and consisting of a self-propelled vehicle comprising, in the direction of travel (A), milling devices (I), devices (II) for mixing the milled products with the addition of a regenerating binder as well as devices (III) for distributing on the road the surfacing thus treated, and smoothing and pre-compacting devices (IV), workshop characterised in that the milling devices (I) consist of a milling rotor (5) which can be moved transversely, or first rotor, and a fixed milling rotor (6) or second rotor disposed behind the first rotor (5) as seen from the direction of travel (A) of the vehicle, the said two rotors, (5, 6) each disposed in a crushing chamber (5', 6',) fitted with crushing bars (8, 8', 10, 10') consisting of a driving tube (50, 60) disposed approximately at right angles to the direction of travel (A) and onto which three helixes are welded each fitted with a series of teeth (7).

Description

La présente invention concerne un atelier de régénération d'une chaussée, susceptible de se déplacer sur cette dernière pour en régénérer à froid les enrobés, qui peuvent être constitués par du béton bitumineux, des graves sous forme d'émulsion, des graves bitumes, etc...The present invention relates to a pavement regeneration workshop, capable of moving over the latter in order to regenerate the asphalt cold, which may consist of bituminous concrete, gravel in the form of an emulsion, gravel bitumen, etc. ...

Le développement très important de la circulation routière, en particulier celui des véhicules lourds tels que camions, les problèmes de mise hors gel du réseau routier, etc... nécessitent un renforcement des chaussées.The very significant development of road traffic, in particular that of heavy vehicles such as trucks, the problems of freezing the road network, etc ... require a strengthening of the roadways.

Or, les diverses solutions envisagées jusqu'à présent ne constituent que des solutions partielles destinées à prolonger de quelques années la durée d'utilisation de certaines voies routières, sans pour autant en assurer un renforcement approprié.However, the various solutions envisaged so far constitute only partial solutions intended to extend the duration of use of certain roadways by a few years, without however ensuring appropriate reinforcement.

Pour remédier à ces inconvénients, on a cherché à mettre au point des dispositifs de régénération permettant de renforcer efficacement les chaussées pour une période très longue et ce pour un prix de revient limité, nettement inférieur, dans la plupart des cas au coût de travaux d'entretien provi- sioires.To overcome these drawbacks, attempts have been made to develop regeneration devices making it possible to effectively reinforce the pavements for a very long period and this for a limited cost price, clearly lower, in most cases at the cost of renovation works. 'provisional maintenance.

Ces dispositifs qui permettent un renforcement "in situ" d'une chaussée sont généralement constitués par un véhicule autotracté comportant, dans le sens d'avancement, des organes de fraisage, des organes de malaxage des produits fraisés avec adjonction d'un liant de régénération, ainsi que des organes de répartition sur la chaussée des enrobés ainsi traités, et des organes de lissage et de précompactage.These devices which allow a reinforcement "in situ" of a roadway generally consist of a self-propelled vehicle comprising, in the direction of travel, milling members, kneading members of milled products with the addition of a regeneration binder , as well as distributing members on the pavement of the coated materials thus treated, and smoothing and precompacting members.

Le liant de régénération utilisé est le plus souvent constitué par du bitume, une émulsion, du bitume fluxé ou tout autre liant hydrocarboné.The regeneration binder used is most often constituted by bitumen, an emulsion, fluxed bitumen or any other hydrocarbon binder.

Malgré leurs avantages, ces dispositifs ne se sont pas montrés totalement satisfaisants.Despite their advantages, these devices have not been completely satisfactory.

La présente invention a pour objet de remédier à ces inconvénients en proposant un atelier de régénération d'une chaussée du type ci-dessus, caractérisé en ce que les organes de fraisage sont constitués par un rotor de fraisage déplaçable transversalement ou premier rotor, et par un rotor de fraisage fixe ou second rotor disposé en arrière du premier rotor, dans le sens d'avancement du véhicule, ces deux rotors, disposés chacun dans une chambre de décohésion munie de barres de décohésion étant constitués par un tube d'entraînement disposé sensiblement transversalement par rapport à la direction d'avancement et sur lequel sont soudés trois spires munies chacune d'une série de dents.The object of the present invention is to remedy these drawbacks by proposing a pavement regeneration workshop of the above type, characterized in that the milling members are constituted by a milling rotor movable transversely or first rotor, and by a fixed milling rotor or second rotor disposed behind the first rotor, in the direction of advancement of the vehicle, these two rotors, each arranged in a decohesion chamber provided with decohesion bars being constituted by a drive tube disposed substantially transversely to the direction of advance and on which are welded three turns each provided with a series of teeth.

Les dents des spires sont, le plus souvent, munies de pointes en carbure de tungstène.The teeth of the turns are most often provided with tungsten carbide tips.

Les barres de décohésion disposées dans les deux chambres de décohésion ont, de façon classique, le but de limiter le passage entre le rotor et le carter, de manière à permettre l'éclatement des matériaux enrobés.The decohesion bars arranged in the two decohesion chambers have, conventionally, the purpose of limiting the passage between the rotor and the casing, so as to allow the bursting of the coated materials.

Conformément à l'invention, il est avantageux de prévoir, en plus de barres de décohésion fixes, une barre de décohésion mobile, montée à la partie inférieure des chambres de décohésion et associée à un système réglable, permettant d'en limiter la hauteur par rapport au sol, et de réduire la distance la séparant des pointes des dents.According to the invention, it is advantageous to provide, in addition to fixed decohesion bars, a mobile decohesion bar, mounted at the bottom of the decohesion chambers and associated with an adjustable system, making it possible to limit the height by ground, and reduce the distance between it and the tips of the teeth.

Selon une autre caractéristique de l'invention, les deux chambres de décohésion sont munies, à leur partie avant, d'injections d'eau susceptibles de refroidir les dents et de fixer les poussières.According to another characteristic of the invention, the two decohesion chambers are provided, at their front part, with water injections capable of cooling the teeth and fixing the dust.

Selon une autre caractéristique de l'invention, le premier rotor de fraisage est muni d'une roue à aubes alimentée par les spires de ce rotor qui projette les produits fraisés par celui-ci dans une goulotte qui les transfère dans la chambre de décohésion du second rotor de fraisage.According to another characteristic of the invention, the first milling rotor is provided with an impeller fed by the turns of this rotor which projects the products milled by the latter into a chute which transfers them to the decohesion chamber of the second milling rotor.

Cette caractéristique est de nature à améliorer notablement le transport des produits fraisés.This characteristic is likely to significantly improve the transport of milled products.

Selon une autre caractéristique de l'invention, les organes de malaxage, alimentés par les spires du second rotor, sont constitués par une cuve de malaxage munie, à sa partie avant, d'une rampe d'injection du liant de régénération hydrocarboné à un débit proportionnel au débit des produits fraisés ainsi que de deux arbres de malaxage disposés longitudinalement par rapport à la direction du véhicule et sur lesquels sont montés des bras notamment munis de palettes interchangeables disposées de manière à constituer une spire qui, tout en malaxant fortement les produits provenant de la chambre de décohésion du second rotor de fraisage, les rejette à l'arrière du véhicule devant les organes de répartition.According to another characteristic of the invention, the kneading members, supplied by the turns of the second rotor, consist of a kneading tank provided, at its front part, with an injection ramp for the hydrocarbon regeneration binder to a flow proportional to the flow of milled products as well as two kneading shafts arranged longitudinally relative to the direction of the vehicle and on which arms are mounted, in particular provided with interchangeable paddles arranged so as to constitute a turn which, while strongly kneading the products coming from the decohesion chamber of the second milling rotor, rejects them at the rear of the vehicle in front of the distribution members.

Conformément à l'invention, il est avantageux de prévoir, à la sortie de la cuve de malaxage, une trappe permettant de maintenir constant le niveau des produits se trouvant dans la cuve et ce, quelle que soit la vitesse d'avancement de la machine afin d'améliorer la qualité du malaxage.In accordance with the invention, it is advantageous to provide, at the outlet of the mixing tank, a hatch allowing the level of the products in the tank to be kept constant, regardless of the speed of advancement of the machine in order to improve the quality of the mixing.

Selon une autre caractéristique de l'invention, la cuve de malaxage est munie d'un fond à double enveloppe garni de plaques d'usure en fonte spéciale et dont l'espace interne est chauffé par les gaz d'échappement du véhicule, notamment du véhicule Dièsel.According to another characteristic of the invention, the kneading tank is provided with a double-jacketed bottom furnished with wear plates of special cast iron and the internal space of which is heated by the exhaust gases of the vehicle, in particular of the Dièsel vehicle.

Cette caractéristique est de nature à diminuer le prix de revient du traitement conforme à l'invention.This characteristic is likely to reduce the cost price of the treatment in accordance with the invention.

Selon une autre caractéristique de l'invention, l'atelier comporte, au-dessous de la cuve de malaxage, une rampe de répandage sur la chaussée, avant distribution des enrobés régénérés d'une couche d'accrochage constituée par un liant hydrocarboné.According to another characteristic of the invention, the workshop comprises, below the mixing tank, a spreading ramp on the floor, before distribution of the regenerated mixes with a bonding layer constituted by a hydrocarbon binder.

La présence de ce liant est indispensable pour obtenir une chaussée satisfaisante après traitement.The presence of this binder is essential to obtain a satisfactory pavement after treatment.

Selon une autre caractéristique de l'invention, la rampe de répandage du liant hydrocarboné de la couche d'accrochage est constituée par au moins un chariot muni d'un injecteur qui balaie transversalement la surface fraisée pour y répartir une couche homogène de liant hydrocarboné à un débit proportionnel à la surface à traiter.According to another characteristic of the invention, the ramp for spreading the hydrocarbon binder of the bonding layer is constituted by at least one carriage provided with an injector which scans the milled surface transversely to distribute therein a homogeneous layer of hydrocarbon binder to a flow proportional to the surface to be treated.

Compte tenu des très faibles débits devant être distribués par les injecteurs, il est, en effet, impossible, conformément à l'invention, de prévoir une rampe fixe munie de plusieurs injecteurs à moins de transporter pneumatiquement le liant hydrocarboné.Given the very low flow rates to be distributed by the injectors, it is, in fact, impossible, in accordance with the invention, to provide a fixed ramp provided with several injectors unless pneumatically transporting the hydrocarbon binder.

Selon une autre caractéristique de l'invention, des organes d'aspiration montés en arrière des deux rotors de fraisage dans le sens du déplacement aspirent les poussières produites lors du fraisage, assurant ainsi un nettoyage de la chaussée et permettant au liant de la couche d'accrochage d'assurer un collage satisfaisant entre la chaussée fraisée et les enrobés régénérés.According to another characteristic of the invention, suction members mounted behind the two milling rotors in the direction of movement suck up the dust produced during milling, thus ensuring cleaning of the pavement and allowing the binder of the bonding layer to ensure satisfactory bonding between the milled pavement and the regenerated asphalt.

Selon une autre caractéristique de l'invention, les organes de répartition sur la chaussée des enrobés régénérés sont constitués par une vis de répartition droite et une vis de répartition gauche, ainsi que par une table lisseuse vibrante réglable en hauteur et munie d'organes de réchauffage qui répartit et compacte les enrobés régénérés, cette table étant munie de couteaux dameurs dont le déplacement vertical alternatif assure un pré-compactage.According to another characteristic of the invention, the distribution members on the pavement of the regenerated asphalt consist of a right distribution screw and a left distribution screw, as well as by a vibrating smoothing table adjustable in height and provided with reheating which distributes and compacts the regenerated asphalt, this table being provided with tamping knives whose alternating vertical displacement ensures pre-compaction.

Les organes de réchauffage de la surface lisseuse peuvent être quelconques conformément à l'invention (soit au gaz, soit au fuel, soit électriques).The members for reheating the smoothing surface can be any according to the invention (either gas, oil, or electric).

Selon une autre caractéristique de l'invention, la table lisseuse vibrante est portée, à ses deux extrémités supérieures, par deux bras articulés sur le châssis de la machine, les points d'ancrage de ces articulations étant montés sur des glissières et susceptibles d'être réglés en hauteur par l'intermédiaire de vérins.According to another characteristic of the invention, the vibrating smoothing table is carried, at its two upper ends, by two arms articulated on the chassis of the machine, the anchoring points of these joints being mounted on slides and capable of be adjusted in height by means of jacks.

Ces vérins peuvent être commandés soit manuellement par l'intermédiaire d'électrovannes soit automatiquement par l'intermédiaire d'un système de nivellement automatique.These cylinders can be controlled either manually via solenoid valves or automatically via an automatic leveling system.

En outre, ce système peut fonctionner soit avec un palpeur d'altimétrie de chaque côté du véhicule, soit avec un palpeur à gauche et un détecteur de pente, soit avec un palpeur à droite et un détecteur de pente.In addition, this system can operate either with an altimetry probe on each side of the vehicle, or with a probe on the left and a slope detector, or with a probe on the right and a slope detector.

Selon une autre caractéristique de l'invention, les organes de malaxage ainsi que les organes de répartition sont montés sur un chariot permettant de dégager l'arrière du véhicule.According to another characteristic of the invention, the kneading members as well as the distribution members are mounted on a carriage allowing the rear of the vehicle to be released.

Cette configuration permet de dégager l'arrière du véhicule pour faciliter l'entretien et, le cas échéant, le dépannage.This configuration allows the rear of the vehicle to be cleared to facilitate maintenance and, if necessary, troubleshooting.

Selon une autre caractéristique de l'invention, l'atelier comporte un calculateur électronique susceptible d'assurer la régulation des pompes de distribution de l'eau, du liant d'accrochage et du liant de régénération à partir des valeurs de consigne des teneurs en ces trois matériaux au mètre carré ou au mètre cube, de la largeur de travail et de la densité de matériaux fraisés, ainsi que des informations transmises par un système électronique qui mesure la vitesse d'avancement du véhicule, et par un palpeur d'altimétrie à droite qui donne la hauteur du fraisage à droite et un palpeur d'altimétrie à gauche qui donne la hauteur du fraisage à gauche.According to another characteristic of the invention, the workshop includes an electronic computer capable of regulating the water distribution pumps, the bonding binder and the regeneration binder from the reference values of the contents in these three materials per square meter or cubic meter, the working width and the density of milled materials, as well as information transmitted by an electronic system which measures the forward speed of the vehicle, and by an altimetry sensor on the right which gives the height of the milling on the right and an altimetry probe on the left which gives the height of the milling on the left.

A partir de ces différentes informations, le calculateur envoie des consigne aux platines des moteurs à courant continu qui entraînent chacune des pompes.From this various information, the computer sends instructions to the plates of the DC motors which drive each of the pumps.

Ainsi, le débit de l'eau est proportionnel au volume des matériaux traités, d'où un dosage en poids constant, tandis que le débit de liant d'accrochage est proportionnel à la surface traitée et le débit de liant de régénération proportionnel au volume des matériaux traités.Thus, the flow of water is proportional to the volume of the treated materials, resulting in a constant weight dosage, while the flow of bonding binder is proportional to the surface treated and the flow of regeneration binder proportional to the volume treated materials.

Selon une autre caractéristique de l'invention, l'atelier comporte une chasse d'air qui, à chaque arrêt du véhicule et après temporisation, vide les tuyauterie d'injection du liant de régénération et du liant de la couche d'accrochage afin que ces deux liants ne se figent pas dans les canalisations d'injection.According to another characteristic of the invention, the workshop includes an air flush which, at each stop of the vehicle and after delay, empties the injection pipes of the regeneration binder and the binder of the bonding layer so that these two binders do not freeze in the injection pipes.

Les caractéristiques de l'atelier qui fait l'objet de l'invention seront décrites plus en détail en se référant aux dessins annexés dans lesquels :

  • - la figure 1 est une vue en plan de l'atelier,
  • - la figure 2 est une coupe latérale de celui-ci.
The characteristics of the workshop which is the subject of the invention will be described in more detail with reference to the accompanying drawings in which:
  • FIG. 1 is a plan view of the workshop,
  • - Figure 2 is a side section thereof.

Selon les figures 1 et 2, l'atelier est constitué par un véhicule autotracté commandé par un moteur Dièsel 1 et dont le châssis porteur 2 repose sur deux chenilles avant 3, 3' et deux chenilles arrière 4, 4'.According to Figures 1 and 2, the workshop is constituted by a self-propelled vehicle controlled by a Dièsel engine 1 and whose carrier chassis 2 rests on two front tracks 3, 3 'and two rear tracks 4, 4'.

Ce véhicule comporte successivement dans le sens d'avancement A, des organes de fraisage I, des organes de malaxage II, des organes III de répartition sur la chaussée des enrobés une fois traités et des organes de lissage et de précompactage IV.This vehicle successively comprises, in the direction of travel A, milling members I, mixing members II, members III for distributing the coated materials on the roadway once treated and smoothing and precompaction members IV.

Les organes de fraisage 1 sont constitués par un premier rotor de fraisage 5 déplaçable transversalement selon la flèche B comme indiqué en pointillés sur la figure 1, et par un second rotor de fraisage fixe 6 disposé en arrière du premier rotor de fraisage 5, parallèlement à celui-ci.The milling members 1 are constituted by a first milling rotor 5 movable transversely along the arrow B as indicated by dotted lines in FIG. 1, and by a second fixed milling rotor 6 disposed behind the first milling rotor 5, parallel to this one.

Selon la figure 2, chacun des rotors 5, 6 est disposé dans une chambre de décohésion 5', 6'. Ces rotors 5, 6 sont chacun constitués par un tube d'entraînement 50, 60 disposé sensiblement transversalement par rapport à la direction d'avancement A (figure 1) sur lequel sont soudées trois spires munies chacune d'une série de dents 7 munies de pointes en carbure le tungstène.According to Figure 2, each of the rotors 5, 6 is arranged in a decohesion chamber 5 ', 6'. These rotors 5, 6 each consist of a drive tube 50, 60 disposed substantially transversely to the direction of advance A (Figure 1) on which are welded three turns each provided with a series of teeth 7 provided with carbide tungsten tips.

Selon la figure 2, les chambres de décohésion 5', 6' sont munies de barres de décohésion 8, 8', 10, 10' ayant pour but de limiter le passage laissé libre pour les produits de fraisage entre les carters et les rotors de fraisage 5, 6 de manière à permettre l'éclatement des matériaux enrobés.According to FIG. 2, the decohesion chambers 5 ′, 6 ′ are provided with decohesion bars 8, 8 ′, 10, 10 ′ having the aim of limiting the passage left free for milling products between the casings and the rotors of milling 5, 6 so as to allow the bursting of the coated materials.

Conformément à la configuration représentée sur la figure 2, les barres de décohésion 8 et 8' sont fixes tandis que les barres de décohésion 10. 10' disposées à la partie inférieure avant des chambres de décohésion 5' et 6' sont associées à des organes de réglage non représentés qui permettent de limiter leur hauteur par rapport au sol X-X' et de réduire la distance séparant ces barres 10 et 10' des dents des rotors de fraisage 5 et 6 et ainsi d'éviter le soulèvement des plaques d'enrobés.In accordance with the configuration shown in FIG. 2, the decohesion bars 8 and 8 ′ are fixed while the decohesion bars 10. 10 ′ arranged at the lower front part of the decohesion chambers 5 ′ and 6 ′ are associated with members adjustment not shown which limit their height from the ground XX 'and reduce the distance between these bars 10 and 10' of the teeth of the milling rotors 5 and 6 and thus avoid the lifting of the asphalt plates.

Les chambres de décohésion 5', 6' sont par ailleurs respectivement munies de lames de nettoyage et de ramassage 9, 9' qui coopèrent avec des organes d'aspiration non représentés montés en arrière des rotors de fraisage 5 et 6 dans le sens de déplacement pour aspirer la poussière produire lors du fraisage, assurant ainsi un nettoyage de la chaussée permettant une adhérence satisfaisante d'un liant d'accrochage qui sera décrit plus en détail dans la suite de cet exposé.The decohesion chambers 5 ′, 6 ′ are also respectively provided with cleaning and pickup blades 9, 9 ′ which cooperate with suction members not shown mounted behind the milling rotors 5 and 6 in the direction of movement. to suck up the dust produced during milling, thus ensuring cleaning of the pavement allowing satisfactory adhesion of a bonding binder which will be described in more detail in the remainder of this description.

Les deux chambres de décohésion 5' et 6' sont, par ailleurs, munies d'injecteurs d'eau non représentés dont le but est de refroidir les dents 7 et de fixer les poussières.The two decohesion chambers 5 ′ and 6 ′ are, moreover, provided with water injectors, not shown, the purpose of which is to cool the teeth 7 and fix the dust.

De manière non représentée, le premier rotor de fraisage 5 coopère, par ailleurs, avec une roue à aubes alimentée par les spires de ce rotor qui projette les produits fraisés par celui-ci dans une goulotte 11 qui les transfère dans la chambre de décohésion 6' du second rotor de fraisage 6.Not shown, the first milling rotor 5 cooperates, moreover, with an impeller fed by the turns of this rotor which projects the products milled by it into a chute 11 which transfers them to the decohesion chamber 6 'of the second milling rotor 6.

Par ailleurs selon les figures 1 et 2, les organes de malaxage Il qui sont alimentés par les spires du second rotor de fraisage 6' sont constitués par une cuve de malaxage 12 renfermant deux arbres de malaxage 13, 13' disposés parallèlement et longitudinalement par rapport à la direction A de déplacement du véhicule. Chacun de ces arbres 13, 13' porte des bras 14 aux extrémités desquelles sont montées des palettes interchangeables 15 disposées de manière à constituer une spire qui tout en malaxant fortement les produits provenant de la chambre de décohésion 6' du second rotor de fraisage 6, les rejette à l'arrière du véhicule, devant les organes de répartition III.Furthermore, according to FIGS. 1 and 2, the kneading members II which are supplied by the turns of the second milling rotor 6 'are constituted by a kneading tank 12 containing two kneading shafts 13, 13' arranged parallel and longitudinally relative to to the direction A of movement of the vehicle. Each of these shafts 13, 13 ′ carries arms 14 at the ends of which are interchangeable pallets 15 arranged so as to constitute a turn which, while strongly kneading the products coming from the decohesion chamber 6 ′ of the second milling rotor 6, rejects them at the rear of the vehicle, in front of the distribution components III.

Selon la figure 2, la cuve de malaxage 12 est, par ailleurs munie, à sa partie avant, d'une rampe d'injection 16 d'un liant de régénération pouvant être constitué par du bitume, une émulsion, du bitume fluxé ou tout autre liant hydrocarboné ; le débit de cette rampe doit, bien entendu, être proportionnel au débit de produits de fraisage introduits dans la cuve 12. Une trappe 17 (figure 2) montée à l'arrière de la cuve 12 permet de maintenir constant le niveau des produits dans cette dernière quelle que soit la vitesse d'avancement et, par suite, d'améliorer la qualité du malaxage.According to FIG. 2, the mixing tank 12 is, moreover, provided, at its front part, with an injection ramp 16 of a regeneration binder which may consist of bitumen, an emulsion, fluxed bitumen or any other hydrocarbon binder; the flow of this ramp must, of course, be proportional to the flow of milling products introduced into the tank 12. A hatch 17 (Figure 2) mounted at the rear of the tank 12 keeps the level of products in this the latter regardless of the forward speed and, consequently, improve the quality of the mixing.

De manière non représentée sur les figures, la cuve 12 est munie d'un fond 18 à double enveloppe qui est garni de plaques d'usure en fonte spéciale et dont l'espace interne est chauffé par les gaz d'échappement Dièsel du véhicule ou par un fluide caloporteur.Not shown in the figures, the tank 12 is provided with a bottom 18 with a double envelope which is lined with wear plates of special cast iron and the internal space of which is heated by the exhaust gas Dièsel of the vehicle or by a heat transfer fluid.

Une rampe 19 prévue au-dessous de la cuve 12 permet, par ailleurs, de répandre sur la chaussée X-X', après fraisage, mais avant distribution des enrobés régénérés, une couche d'accrochage constituée par un liant hydrocarboné.A ramp 19 provided below the tank 12 also makes it possible to spread on the road X-X ′, after milling, but before distribution of the regenerated coated materials, a bonding layer constituted by a hydrocarbon binder.

Compte tenu des faibles débits devant être distribués par cette rampe 19, celle-ci est en réalité constituée par un chariot non représenté muni d'un injecteur qui se déplace transversalement sur une glissière afin de répandre sur la surface fraisée, une couche homogène de liant hydrocarboné à un débit proportionnel à la surface à traiter.Given the low flow rates to be distributed by this ramp 19, it is actually constituted by a carriage not shown provided with an injector which moves transversely on a slide in order to spread over the milled surface, a homogeneous layer of binder hydrocarbon at a rate proportional to the surface to be treated.

Selon les figures 1 et 2, les organes de répartition III sur la chaussée X-X' des enrobés régénérés sont principalement constitués par une vis de répartition 20. Les organes de lissage et de précompactage IV sont principalement constitués d'une table lisseuse vibrante 21 réglable en hauteur et munie d'organes de réchauffage 22 de sa surface inférieure 23 qui répartit lisse et compacte les enrobés régénérés.According to FIGS. 1 and 2, the distribution members III on the roadway XX ′ of the regenerated coated materials are mainly constituted by a distribution screw 20. The smoothing and precompacting members IV mainly consist of a vibrating smoothing table 21 adjustable in height and provided with heating elements 22 of its lower surface 23 which distributes smooth and compacts the regenerated mixes.

Selon la figure 1, la vis de répartition 20 se décompose en une partie droite 24 et une partie gauche 25 qui permettent de répandre le produit sur la chaussée X-X'.According to FIG. 1, the distribution screw 20 is broken down into a right part 24 and a left part 25 which make it possible to spread the product on the road XX ′.

Selon la figure 2, la table vibrante 21 est portée à ses deux extrémités supérieures par deux bras 26, 26' qui sont articulés sur le châssis 2 du véhicule par leurs extrémités 27 ; les points d'ancrage de ces articulations 27 sont montés sur des glissières non représentées et sont susceptibles d'être réglés en hauteur par l'intermédiaire de vérins 28. Ces vérins 28 peuvent soit être commandés manuellement par l'intermédiaire d'électrovannes soit automatiquement par l'intermédiaire d'un système de nivellement automatique.According to Figure 2, the vibrating table 21 is carried at its two upper ends by two arms 26, 26 'which are articulated on the chassis 2 of the vehicle by their ends 27; the anchoring points of these articulations 27 are mounted on slides not shown and are capable of being adjusted in height by means of jacks 28. These jacks 28 can either be controlled manually by means of solenoid valves or automatically through an automatic leveling system.

Un vérin 29 est, par ailleurs, monté entre le châssis 2 du véhicule et la partie supérieure des bras 26, 26' pour permettre le relevage de la table 21 lors des transferts.A cylinder 29 is, moreover, mounted between the chassis 2 of the vehicle and the upper part of the arms 26, 26 'to allow the lifting of the table 21 during transfers.

Cette table 21 est, par ailleurs, munie à sa partie avant de couteaux dameurs 30 dont le déplacement vertical alternatif assure un précompactage. Cette table 21 est munie, d'autre part, d'un système de vibration qui assure un travail correct de la surface lisseuse 23.This table 21 is, moreover, provided at its front part with tamping knives 30, the reciprocating vertical displacement of which provides precompaction. This table 21 is also provided with a vibration system which ensures correct work of the smoothing surface 23.

De façon préférentielle et non représentée sur les figures, les organes de malaxage Il ainsi que les organes de répartition III sont montés sur un chariot qui permet de dégager l'arrière du véhicule pour faciliter l'entretien et le dépannage.Preferably and not shown in the figures, the kneading members II as well as the distribution members III are mounted on a carriage which makes it possible to free the rear of the vehicle to facilitate maintenance and troubleshooting.

Par ailleurs, les débits des pompes de distribution d'eau 31 ainsi que des pompes de distribution du liant d'accrochage 32 et du liant de régénération 33 sont commandés automatiquement par un calculateur électronique non représenté à partir des valeurs de consigne des teneurs en les trois matériaux susmentionnés au mètre carré ou au mètre cube, de la largeur de travail, de la densité des matériaux fraisés ainsi que des informations transmises par un système électronique qui mesure la vitesse d'avancement du véhicule et par un palpeur d'altimétrie à droite qui donne la hauteur du fraisage à droite et un palpeur d'altimétrie à gauche qui donne la hauteur du fraisage à gauche.Furthermore, the flow rates of the water distribution pumps 31 as well as the distribution pumps for the bonding binder 32 and the regeneration binder 33 are automatically controlled by an electronic computer not shown from the setpoint values of the contents in three aforementioned materials per square meter or cubic meter, working width, density of milled materials as well as information transmitted by an electronic system which measures the forward speed of the vehicle and by an altimetry sensor on the right which gives the height of the milling on the right and an altimetry probe on the left which gives the height of the milling on the left.

En outre, une chasse d'air, elle aussi, non représentée, permet à chaque arrêt du véhicule et après temporisation de vider les tuyauteries d'injection du liant de régénération et du liant de la couche d'accrochage afin que ces deux liants ne se figent pas dans les canalisations d'injection, ces canalisations étant elles-mêmes réchauffées par un réseau de résistances électriques ou un fluide caloporteur.In addition, an air flush, also not shown, allows each stop of the vehicle and after delay to empty the injection pipes of the regeneration binder and the binder of the bonding layer so that these two binders not freeze in the injection pipes, these pipes themselves being heated by a network of electrical resistances or a heat transfer fluid.

Claims (13)

1. Workshop for regenerating a road, capable of moving on the latter to regenerate the surfacing on it, and consisting of a self-propelled vehicle comprising, in the direction of travel (A), milling devices (I), devices (II) for mixing the milled products with the addition of a regenerating binder as well as devices (III) for distributing on the road the surfacing thus treated, and smoothing and pre-compacting devices (IV), workshop characterised in that the milling devices (I) consist of a milling rotor (5) which can be moved transversely, or first rotor, and a fixed milling rotor (6) or second rotor disposed behind the first rotor (5) as seen from the direction of travel (A) of the vehicle, the said two rotors, (5, 6) each disposed in a crushing chamber (5', 6',) fitted with crushing bars (8, 8', 10, 10') consisting of a driving tube (50, 60) disposed approximately at right angles to the direction of travel (A) and onto which three helixes are welded each fitted with a series of teeth (7).
2. Workshop as claimed in claim 1, characterised in that the two crushing chambers (5', 6') are fitted, at the front, with water injectors capable of cooling the teeth and settling the dust.
3. Workshop as claimed in either one of claims 1 or 2, characterised in that the first milling rotor (5) is fitted with a paddle wheel, fed by the helical turns on the said rotor, which projects the products milled by the latter into a chute (11) which transfers them into the crushing chamber (6') of the second milling rotor (6).
4. Workshop as claimed in any one of claims 1 to 3, characterised in that the mixing devices (II), fed by the helical on the second rotor (6), consist of a mixing tank (12) provided, at the front, with a pipe (16) for injectig the bituminised regenerating binder at a flow rate proportional to the flow of the milled products, as well as two mixing shafts (13, 13') disposed longitudinally with respect to the direction of travel (A) of the vehicle and on which arms (14) are mounted, fitted in particular with interchangeable blades, disposed so as to form a helix which, whilst strongly mixing the products coming from the crushing chambers (6') of the second milling rotor (6), throws them towards the rear of the vehicle in front of the distribution devices (111).
5. Workshop as claimed in any one of claims 1 to 4, characterised in that the mixing tank (12) is provided with a double bottom fitted with wearing plates made from special cast iron, the internal space of which is heated by the vehicle exhaust gases.
6. Workshop as claimed in any one of claims 1 to 5, characterised in that it comprises underneath the mixing tank (12) a pipe (19) for spreading on the road, before distribution of the regenerated surfacing, a bonding layer consisting of a bituminised binder.
7. Workshop as claimed in any one of claims 1 to 6, characterised in that the pipe (19), for spreading the bituminised binder constituting the bonding layer is formed by at least one carriage fitted with an injector which sweeps the road surface transversely to spread on it a homogeneous layer of bituminised binder at a flow rate proportional to the surface to be treated.
8. Workshop as claimed in any one of claims 1 to 7, characterised in that suction devices mounted behind the two milling rotors (5, 6,) as seen from the direction of travel (A) extract the dust produced during the milling, thus cleaning the road and enabling the binder in the bonding layer to provide satisfactory adhesion between the milled road and the regenerated surfacing.
9. Workshop as claimed in any one of claims 1 to 8, characterised in that the devices (111) for distributing the regenerated surfacing on the road consist of a screw for distribution to the right (24) and a screw for distribution to the left (25) whilst the smoothing and pre-compacting devices (IV) consist of a vibrating table (21) adjustable for height and fitted with reheating devices (22) which distribute and compact the regenerated surfacing, the said table (21) being fitted with tamping blades (30), the alternating vertical movement of which provides pre-compacting.
10. Workshop as claimed in any one of claims 1 to 9, characterised in that the smoothing vibrating table (21) is supported, at its two upper ends, by two arms (26, 26') hinged on the frame (2) of the machine, the anchoring points (27) of these hinges being mounted on slides and capable of being adjusted in height by means of actuators (28).
11. Workshop as claimed in any one of claims 1 to 10, characterised in that the mixing devices (II) and the distribution devices (III) are mounted on a carriage enabling the rear of the vehicle to be released to facilitate maintenance and repair.
12. Workshop as claimed in any one of claims 1 to 11, characterised in that it comprises an electronic computer capable of regulating the pumps for distributing the water (31), the bonding binder (32) and the regenerating binder (33) in accordance with reference values for the contents of these three materials per square metre or cubic metre, the width of work and the density of the milled materials, as well as information transmitted by an electronic system which measures the speed of travel of the vehicle and by a right hand height sensor which gives the height of the milling to the right and a left hand height sensor which gives the height of the milling to the left.
13. Workshop as claimed in any one of claims 1 to 12, characterised in that it comprises an air blast which, every time the vehicle stops, and after any delay time, empties the tubes for injecting the regenerating binder and the bonding layer binder so that these two binders do not solidify in the injection pipes.
EP88400357A 1987-03-03 1988-02-17 Road regeneration plant Expired - Lifetime EP0282381B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400357T ATE56059T1 (en) 1987-03-03 1988-02-17 ROAD REGENERATION PLANT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8702856A FR2611767B1 (en) 1987-03-03 1987-03-03 PAVEMENT REGENERATION WORKSHOP
FR8702856 1987-03-03

Publications (2)

Publication Number Publication Date
EP0282381A1 EP0282381A1 (en) 1988-09-14
EP0282381B1 true EP0282381B1 (en) 1990-08-29

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EP88400357A Expired - Lifetime EP0282381B1 (en) 1987-03-03 1988-02-17 Road regeneration plant

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EP (1) EP0282381B1 (en)
AT (1) ATE56059T1 (en)
DE (1) DE3860501D1 (en)
ES (1) ES2018076B3 (en)
FR (1) FR2611767B1 (en)

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Publication number Publication date
FR2611767B1 (en) 1989-06-30
ES2018076B3 (en) 1991-03-16
FR2611767A1 (en) 1988-09-09
EP0282381A1 (en) 1988-09-14
ATE56059T1 (en) 1990-09-15
DE3860501D1 (en) 1990-10-04

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