EP0292337A1 - Apparatus for spreading a bituminous emulsion on a road surface without lorries circulating over the adhesion layer formed by spreading this emulsion - Google Patents

Apparatus for spreading a bituminous emulsion on a road surface without lorries circulating over the adhesion layer formed by spreading this emulsion Download PDF

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Publication number
EP0292337A1
EP0292337A1 EP88400332A EP88400332A EP0292337A1 EP 0292337 A1 EP0292337 A1 EP 0292337A1 EP 88400332 A EP88400332 A EP 88400332A EP 88400332 A EP88400332 A EP 88400332A EP 0292337 A1 EP0292337 A1 EP 0292337A1
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EP
European Patent Office
Prior art keywords
spreading
emulsion
chassis
mixes
ramp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88400332A
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German (de)
French (fr)
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EP0292337B1 (en
Inventor
Jean Cameleyre
Pierre Chazal
Christophe Flatres
Jean-Claude Fouard
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SCREG Routes et Travaux Publics
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SCREG Routes et Travaux Publics
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Publication date
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Priority to AT88400332T priority Critical patent/ATE55434T1/en
Publication of EP0292337A1 publication Critical patent/EP0292337A1/en
Application granted granted Critical
Publication of EP0292337B1 publication Critical patent/EP0292337B1/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
    • 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
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/16—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 distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
    • E01C19/17—Application by spraying or throwing
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/16—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 distributing granular or liquid materials for applying or spreading liquid materials, e.g. bitumen slurries
    • E01C19/17—Application by spraying or throwing
    • E01C19/176—Spraying or throwing elements, e.g. nozzles; Arrangement thereof or supporting structures therefor, e.g. spray-bars
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/21—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 distributing granular or liquid materials for simultaneously but separately applying liquid material and granular or pulverulent material, e.g. bitumen and grit, with or without spreading ; for filling grooves and gritting the filling
    • 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
    • E01C19/48—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 laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ
    • 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
    • E01C23/04—Devices for laying inserting or positioning reinforcing elements or dowel bars with or without joint bodies; Removable supports for reinforcing or load transfer elements; Devices, e.g. removable forms, for making essentially horizontal ducts in paving, e.g. for prestressed reinforcements
    • 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
    • E01C19/12—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 distributing granular or liquid materials
    • E01C19/20—Apparatus for distributing, e.g. spreading, granular or pulverulent materials, e.g. sand, gravel, salt, dry binders
    • E01C2019/2055—Details not otherwise provided for
    • E01C2019/207—Feeding the distribution means
    • E01C2019/2075—Feeding the distribution means with longitudinal conveyor belt
    • 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
    • E01C2301/02—Feeding devices for pavers
    • E01C2301/04—Independent shuttles

Definitions

  • the invention relates to a device for spreading bituminous emulsion on the surface of a road, for the constitution of a bonding layer prior to the deposition of a layer of hot bituminous mixes by a paver.
  • bituminous mixes For the construction, maintenance or repair of roads or pavements, it may be necessary to deposit a layer of hot bituminous mixes on an existing layer of the pavement. To ensure good adhesion of the two superposed layers, it is necessary to spread on the surface to be covered, a bituminous emulsion before depositing the layer of hot mixes.
  • the spreading of the bituminous emulsion was carried out on the layer to be covered previously scanned, by a machine comprising a tank and a spreading ramp.
  • the emulsion exposed to the ambient air then underwent a more or less long drying during which the emulsion broke.
  • the application of the hot mix layer and its compaction were then carried out using a conventional paver supplied by trucks from a coating plant and a compaction roller working after the paver.
  • a conventional paver is used fitted with emulsion spreading ramps arranged over the entire width of the road, between the hot asphalt receiving hopper located at the front of the paver and the spreading device for asphalt mix located at the rear of the paver.
  • Such a device can therefore be supplied at its front with hot mixes, by trucks which are never brought to move on the bonding layer.
  • the object of the invention is therefore to propose a device for spreading bituminous emulsion on the surface of a road, for the constitution of a bonding layer, prior to the deposition of a layer of hot bituminous mixes by a paver, comprising a chassis and running means independent of the paver and allowing rational and totally continuous use of the paver, in a process in which the hot-mix coating is deposited immediately after the spread of the bituminous emulsion and in which asphalt supply trucks are not required to travel on the bonding layer.
  • the spreading device comprises, mounted on the chassis, a device for receiving hot mixes in its part. front, an asphalt transfer device arranged after the receiving device over the entire length of the chassis having a discharge end located at the rear of the chassis, a bituminous emulsion tank with a capacity at least equal to two cubic meters and an emulsion spreading ramp on the road supplied by the tank and placed transversely at the rear of the chassis.
  • the entire device shown in Figure 1 moves in the direction of advance of the chan tier (arrow 4) and comprises a finisher 5, an emulsion spreading device according to the invention 6 and a truck 7 enabling the asphalt paver 5 to be supplied with hot mixes, by means of the spreading device 6.
  • the paver 5 comprises, in a conventional manner, a chassis supported by tracks 8 on which rests a hot asphalt receiving hopper 9, a motorization and control assembly 10 comprising a driving position, a hot asphalt conveyor 11 and an asphalt spreader 12.
  • a table 13 for smoothing the coating layer is placed behind the spreading device 12.
  • the device comprises a chassis 15 carried by tracks 16 and comprising, at its front part, a push bar 17 provided with rollers on which the wheels of the asphalt supply truck 7 rest.
  • the chassis 15 carries, at its front part, a hopper for receiving hot mixes 18 and, following the hopper 18, over its entire length, a mix transfer device 19 comprising a conveyor 20 with chain and steel bars and an elevator 21 arranged following the conveyor 19, the end part of which constitutes a discharge hopper 22.
  • the elevator 21 comprises two endless chains 23 on which are lifted pallets 24 making it possible to transport the hot mixes from the outlet of the conveyor 19 to the hopper of discharge 22 located at the rear end of the device 6 and above the receiving hopper 9 of the paver, when the device is in operation on the site, as shown in FIG. 1.
  • the chassis 15 of the device 6 also carries, in its middle part, an emulsion tank 25 whose capacity is 10 m3. This tank includes means for reheating the emulsion and for distribution which will be described, with reference to FIG. 5.
  • the reservoir 25 makes it possible to supply an emulsion spreading assembly 26 fixed to the rear and to the lower part of the chassis.
  • the spreading device 26 is constituted by a central ramp 26a fixed on the frame 15 and by two lateral ramps 26b and 26c mounted movable in the transverse direction (arrow 27 in FIG. 3), on the central ramp 26a.
  • the displacement of the lateral ramps 26b and 26c makes it possible to modify the width of the action area of the device 26, as a function of the width of the roadway to be covered.
  • the booms 26a, 26b and 26c are provided with spray nozzles 28 directed downwards and distributed at regular distances, along the length of the booms.
  • the ramp 26a does not have a nozzle in two zones 26 ⁇ arranged along the length of the ramp, in the extension of the tracks 8 of the finisher 5.
  • the finisher 5 comprises, at its rear part, two small ramps located in the extension of the tracks 8 and immediately in front of the asphalt spreading device 12.
  • Such complementary ramps can be supplied from a small emulsion tank carried by the finisher or from the tank of the emulsion spreader, via a flexible pipe.
  • the central ramp 26a is connected to the chassis 15 by means of a motorized carriage 29 mounted on rollers, optionally allowing an alternating movement of reduced and adjustable amplitude of the ramps, in the longitudinal direction of the chassis 15.
  • the carriage 29 is provided with a screw-nut or similar system for adjusting the height of the ramp 26a relative to the ground.
  • the chassis 15 also carries at its rear end two flanges 30 parallel and disposed laterally on the sides of the chassis 15 having openings 31 opening towards the rear into which the ends of the axis 33 of a spool of textile material can be introduced. 32.
  • the coil 32 is thus rotatably mounted between the flanges 30, which makes it possible to unwind a sheet of textile material 34 of large width on the surface of the road 1, between the bonding layer deposited by the ramps 26 and the layer of asphalt deposited by the finisher 5.
  • the sheet of textile material 34 is guided along its path and kept in tension, by means of rollers such as 35 and 36.
  • the textile roller 32 is slightly braked in rotation to maintain permanent tension in the fabric.
  • the textile unwinding device consists of simple roller axle supports. The unwinding is ensured by the forward traction of the emulsion spreader.
  • the chassis 15 On either side of the elevator 21, the chassis 15 carries a motorization assembly 40 and a driving position 41 comprising all the machine controls and a seat for the driver.
  • the motorization assembly 40 consists of a heat engine and hydraulic control and transmission means.
  • the transmission of the movement to the tracks 16 of the machine is of the hydrostatic type, which allows the feed speed to be easily adjusted to a low value, perfectly constant and perfectly determined. It is thus possible to adapt the speed of advance of the emulsion spreading device on the site, to the speed of the paver.
  • the finisher 5 and the spreading device 6 are in fact not connected by any mechanical connection and comprise totally independent motorization means.
  • the motorization of the active elements of the spreading device, such as the conveyor 19, the elevator 21 and the emulsion distribution pump are controlled, by hydrostatic transmission, from the motorization assembly 40.
  • the mix and emulsion rates can be set at values proportional to the speed of progress of the site.
  • the spreading ramps are connected, downstream of the three-way valve 48, to a pipe 49 in communication with a container of compressed air 51, via a sectioning valve 50.
  • a truck 7 for supplying hot mixes (that is to say at a temperature close to or above 150 ° C.) is placed at the front of the spreading device 6 which then ensures its displacement by pushing at its advance speed on the site.
  • the bucket of the truck 7 is inclined so as to pour the hot mixes into the hopper 18 of the spreading device 6 which is similar to the hopper 9 placed at the front of the paver 5.
  • the hot mixes are transported by the conveyor 20 and the elevator 21 to the hopper 22 which ensures their continuous discharge into the receiving hopper 9 of the paver 5.
  • the conveyor 11 of the paver ensures the continuous transport of the mixes hot to the spreader 12.
  • the ramps of the spreading assembly 26 ensure the distribution and distribution of the emulsion on the surface 1 of the road, at a location just in front of the finisher 5.
  • the sheet of textile material 34 is applied immediately on the emulsion layer which has just been deposited by the nozzles 28 of the ramps.
  • the nozzles 28 project the emulsion onto the surface 1 of the road, in the form of contiguous flat jets and without overlapping.
  • the hot mixes 52 are spread by the device 12, so that they come into contact with the upper surface of the textile sheet 34 itself in contact with the bonding layer 3 formed by the emulsion.
  • the heat of the mix 52 produces a very rapid drying and rupture of the emulsion, the water of which boils on contact with the mixes at 150 ° C. This boiling produces a dispersion of the bitumen of the emulsion in the sub-layer 1 of the road and in the asphalt layer 2, which provides an effective attachment of the asphalt layer on the road.
  • the sheet of textile material 34 does not hinder in any way the heat exchanges between the mix and the emulsion layer and the dispersion of the bitumen in the junction zone.
  • the device according to the invention for spreading bonding layers of 0.2 to 0.8 kg / m2, the speed of advance of the device and the finisher on the site being between 4 and 8 m / min.
  • the metering is carried out by the positive displacement pump 45 whose speed is proportional to the speed of advance of the spreading device.
  • the spreading is carried out continuously, as has been described.
  • the spreading ramps are moved in the longitudinal direction of the device. Simultaneously, the advancement speed of the device is adjusted to achieve a sequence allowing spreading by successive transverse bands.
  • the device according to the invention has the advantage of allowing an implementation of a process where the hot mixes are deposited on the bonding layer very quickly after its application on the road, while using a conventional type finisher.
  • the autonomy of the device is considerably increased, since the emulsion tank carried by a chassis completely independent of the finisher can have a large capacity.
  • the autonomy of the device is also increased by the fact that a reserve of hot mixes is present in the transfer device of the emulsion spreader, after the unloading of a truck. This reserve allows at least to double the reserve contained in the finisher transfer device.
  • an emulsion tank with a capacity different from 10 m3 can be provided on the spreading device.
  • This capacity will however preferably be between 5 and 10 m3 and, in any case, greater than 2 m3, to ensure sufficient autonomy of the device on the site. If the capacity is greater than 5 m3, an emulsion reheating device must be provided.
  • the device for transferring hot mixes placed along the length of the emulsion spreader could be produced in a form different from that which has been described.
  • the emulsion spreading ramps may have a different shape and a different distribution than those which have been described.
  • the spreading device according to the invention can be mounted on tracks or on wheels. This device can be self-propelled or its movement can be ensured by pushing, thanks to the finisher.
  • the device for transferring hot mixes placed along the length of the emulsion spreader can be simplified and the receiving hopper eliminated, in the case where the supply of mixes is ensured by a bead picker.
  • the emulsion spreading device will preferably be mechanically connected to the finisher.

Abstract

1. Device for spreading a bituminous emulsion over the surface (1) of a road in order to constitute a bonding layer (3) prior to the deposition of a layer (2) of hot bituminous road surfacing material by a finishing machine (5), this device comprising a chassis (15) and a means of movement (16) which is independent of the finishing machine (5), characterised by the fact that it comprises a device for receiving the hot road surfacing material (18) mounted on the chassis (15) at the front, a device for transferring the road surfacing material (19, 21) positioned behind the receiving device (18), over the length of the chassis (15), having a discharge end (22) located at the rear of the chassis (15), a tank for containing bituminous emulsion (25) with a capacity at least equal to two cubic metres and a boom (26) for spreading the emulsion over the road, being supplied by the tank (25) and positioned transversely at the rear of the chassis (15).

Description

L'invention concerne un dispositif de répan­dage d'émulsion bitumineuse sur la surface d'une rou­te, pour la constitution d'une couche d'accrochage préalablement au dépôt d'une couche d'enrobés bitumi­neux chauds par un finisseur.The invention relates to a device for spreading bituminous emulsion on the surface of a road, for the constitution of a bonding layer prior to the deposition of a layer of hot bituminous mixes by a paver.

Pour la construction, l'entretien ou la ré­paration des routes ou chaussées, il peut être néces­saire de déposer une couche d'enrobés bitumineux chauds sur une couche existante de la chaussée. Pour assurer un bon accrochage des deux couches superpo­sées, il est nécessaire de répandre sur la surface à recouvrir, une émulsion bitumineuse préalablement au dépôt de la couche d'enrobés chauds.For the construction, maintenance or repair of roads or pavements, it may be necessary to deposit a layer of hot bituminous mixes on an existing layer of the pavement. To ensure good adhesion of the two superposed layers, it is necessary to spread on the surface to be covered, a bituminous emulsion before depositing the layer of hot mixes.

De manière traditionnelle, le répandage de l'émulsion bitumineuse était effectué sur la couche à recouvrir préalablement balayée, par une machine comportant une citerne et une rampe de répandage. L'é­mulsion exposée à l'air ambiant subissait alors un sé­chage plus ou moins long au cours duquel se produisait la rupture de l'émulsion. L'application de la couche d'enrobés à chaud et son compactage étaient alors ef­fectués en utilisant un finisseur classique approvi­sionné par des camions à partir d'une centrale d'enro­bage et un rouleau de compactage travaillant à la suite du finisseur.Traditionally, the spreading of the bituminous emulsion was carried out on the layer to be covered previously scanned, by a machine comprising a tank and a spreading ramp. The emulsion exposed to the ambient air then underwent a more or less long drying during which the emulsion broke. The application of the hot mix layer and its compaction were then carried out using a conventional paver supplied by trucks from a coating plant and a compaction roller working after the paver.

Plus récemment, on a proposé un procédé pour l'application d'une couche d'accrochage préalablement au dépôt d'enrobés à chaud sur la surface d'une route dans lequel le dépôt des enrobés chauds est effectué immédiatement après le répandage de la couche d'émul­sion. De cette manière, le séchage et la rupture de l'émulsion sont effectués en un temps très court, par mise en contact avec les enrobés chauds. La mise en ébullition de l'eau contenue dans l'émulsion, sous l'effet de la chaleur des enrobés dont la température est supérieure à 150°C, provoque une dispersion du bitume contenu dans l'émulsion, aussi bien dans la sous-couche sur laquelle on réalise le dépôt que dans la couche d'enrobés à chaud, au voisinage de la sur­face de jonction entre ces deux couches. Il en résulte un meilleur accrochage des enrobés à chaud sur la sous-couche.More recently, a method has been proposed for applying a bonding layer prior to the deposition of hot mixes on the surface of a road in which the deposition of the hot mixes is carried out immediately after the spreading of the layer. emulsion. In this way, the drying and the breaking of the emulsion are carried out in a very short time, by contacting the hot mixes. The boiling of the water contained in the emulsion, under the effect of the heat of coated materials with a temperature above 150 ° C causes dispersion of the bitumen contained in the emulsion, both in the undercoat on which the deposition is carried out and in the coated layer with hot, near the junction surface between these two layers. This results in better adhesion of the hot mixes on the sub-layer.

Pour mettre en oeuvre ce procédé, on utilise un finisseur classique équipé de rampes de répandage d'émulsion disposées sur toute la largeur de la route, entre la trémie de réception des enrobés chauds située à l'avant du finisseur et le dispositif de répandage des enrobés situé à l'arrière du finisseur.To implement this method, a conventional paver is used fitted with emulsion spreading ramps arranged over the entire width of the road, between the hot asphalt receiving hopper located at the front of the paver and the spreading device for asphalt mix located at the rear of the paver.

Un tel dispositif peut donc être alimenté à sa partie antérieure en enrobés chauds, par des ca­mions qui ne sont jamais amenés à se déplacer sur la couche d'accrochage.Such a device can therefore be supplied at its front with hot mixes, by trucks which are never brought to move on the bonding layer.

Un tel dispositif présente cependant des inconvénients et en particulier, l'adaptation de ram­pes de répandage sur le finisseur et le réglage du dé­bit de ces rampes en fonction de la vitesse du finis­seur nécessitent l'utilisation d'organes supplémentai­res qui compliquent considérablement la conception du finisseur. De plus, il n'est pas possible de placer sur le finisseur, pour des questions d'encombrement et de puissance disponible, un réservoir d'émulsion ayant une capacité notable. L'autonomie du dispositif est donc faible et il n'est pas possible d'assurer un fonctionnement continu pendant une longue période.However, such a device has drawbacks and in particular, the adaptation of spreading booms on the paver and the adjustment of the flow rate of these booms as a function of the speed of the paver require the use of additional members which considerably complicate the design of the finisher. In addition, it is not possible to place on the finisher, for reasons of space and available power, an emulsion tank having a significant capacity. The autonomy of the device is therefore low and it is not possible to ensure continuous operation for a long period.

Cette autonomie est encore réduite par le fait que la réserve d'enrobés chauds disponible dans la trémie de réception et sur le convoyeur du finis­seur est relativement faible, si bien que le finisseur peut se trouver à court d'enrobés si l'approvisionne­ment par les camions n'est pas assuré avec une grande régularité. Les périodes d'arrêt consécutives à cette rupture d'approvisionnement en enrobés peuvent se cu­muler avec les arrêts nécessaires pour le réapprovi­sionnement en émulsion puisque ces périodes d'arrêt ne coïncident pas obligatoirement.This autonomy is further reduced by the fact that the reserve of hot mixes available in the receiving hopper and on the conveyor of the paver is relatively low, so that the paver may run out of asphalt if supply by trucks is not assured with great regularity. The periods of stoppage consecutive to this interruption in the supply of coated materials can be combined with the stoppages necessary for the restocking of emulsion since these stopping periods do not necessarily coincide.

Il peut donc paraître souhaitable de revenir à l'utilisation d'une machine de répandage d'émulsion indépendante du finisseur, comme dans la technique an­cienne. Cependant, une telle machine utilisée à l'avant du finisseur interdirait l'approvisionnement du finisseur en enrobés chauds, pendant son fonction­nement. Aucune des machines de répandage connues ac­tuellement ne permet une utilisation rationnelle d'un finisseur pour le dépôt d'une couche d'enrobés bitumi­neux chauds sur une route, avec interposition d'une couche d'accrochage.It may therefore seem desirable to return to the use of an emulsion spreading machine independent of the finisher, as in the old technique. However, such a machine used at the front of the paver would prohibit the supply of hot asphalt to the paver during its operation. None of the currently known spreading machines allows a rational use of a paver for depositing a layer of hot bituminous mixes on a road, with the interposition of a bonding layer.

Le but de l'invention est donc de proposer un dispositif de répandage d'émulsion bitumineuse sur la surface d'une route, pour la constitution d'une couche d'accrochage, préalablement au dépôt d'une cou­che d'enrobés btumineux chauds par un finisseur, com­portant un châssis et des moyens de roulement indépen­dants du finisseur et permettant une utilisation ra­tionnelle et totalement continue du finisseur, dans un procédé dans lequel le dépôt des enrobés à chaud est effectué immédiatement après le répandage de l'émul­sion bitumineuse et dans lequel les camions d'approvi­sionnement en enrobés ne sont pas amenés à circuler sur la couche d'accrochage.The object of the invention is therefore to propose a device for spreading bituminous emulsion on the surface of a road, for the constitution of a bonding layer, prior to the deposition of a layer of hot bituminous mixes by a paver, comprising a chassis and running means independent of the paver and allowing rational and totally continuous use of the paver, in a process in which the hot-mix coating is deposited immediately after the spread of the bituminous emulsion and in which asphalt supply trucks are not required to travel on the bonding layer.

Dans ce but, le dispositif de répandage sui­vant l'invention comporte, montés sur le châssis, un dispositif de réception d'enrobés chauds à sa partie avant, un dispositif de transfert des enrobés disposé à la suite du dispositif de réception sur toute la longueur du châssis ayant une extrémité de déversement située à l'arrière du châssis, un réservoir d'émulsion bitumineuse d'une capacité au moins égale à deux mè­tres cubes et une rampe de répandage d'émulsion sur la route alimentée par le réservoir et placée transversa­lement à l'arrière du châssis.To this end, the spreading device according to the invention comprises, mounted on the chassis, a device for receiving hot mixes in its part. front, an asphalt transfer device arranged after the receiving device over the entire length of the chassis having a discharge end located at the rear of the chassis, a bituminous emulsion tank with a capacity at least equal to two cubic meters and an emulsion spreading ramp on the road supplied by the tank and placed transversely at the rear of the chassis.

Afin de bien faire comprendre l'invention, on va maintenant décrire, à titre d'exemple non limi­tatif, en se référant aux figures jointes en annexe, un mode de réalisation d'un dispositif de répandage d'émulsion suivant l'invention.

  • La figure 1 est une vue schématique en élé­vation et en coupe partielle d'un ensemble de revête­ment d'une chaussée comportant un dispositif de répan­dage suivant l'invention.
  • La figure 2 est une vue en élévation latéra­le et en coupe partielle d'un dispositif de répandge d'émulsion suivant l'invention.
  • La figure 3 est une vue de dessus suivant 3 de la figure 2.
  • La figure 4 est une vue en élévation arrière du dispositif de répandage, suivant 4 de la figure 3.
  • La figure 5 est une représentation schémati­que du réservoir d'émulsion, de la rampe de répandage et du circuit d'alimentation en émulsion d'un disposi­tif suivant l'invention.
  • Sur la figure 1, on voit la surface 1 d'une route, sur laquelle on dépose une couche d'enrobés chauds 2, avec interposition d'une couche d'accrochage 3 d'émulsion bitumineuse.
In order to clearly understand the invention, a description will now be given, by way of nonlimiting example, with reference to the appended figures, an embodiment of an emulsion spreading device according to the invention.
  • Figure 1 is a schematic elevational view in partial section of a pavement covering assembly comprising a spreading device according to the invention.
  • Figure 2 is a side elevational view in partial section of an emulsion spreading device according to the invention.
  • FIG. 3 is a top view along line 3 in FIG. 2.
  • FIG. 4 is a rear elevation view of the spreading device, along 4 in FIG. 3.
  • FIG. 5 is a schematic representation of the emulsion tank, the spreading ramp and the emulsion supply circuit of a device according to the invention.
  • In FIG. 1, the surface 1 of a road is seen, on which a layer of hot mixes 2 is deposited, with the interposition of a bonding layer 3 of bituminous emulsion.

L'ensemble du dispositif représenté sur la figure 1 se déplace dans le sens d'avancement du chan­ tier (flèche 4) et comporte un finisseur 5, un dispo­sitif de répandage d'émulsion suivant l'invention 6 et un camion 7 permettant l'approvisionnement du finis­seur 5 en enrobés chauds, par l'intermédiaire du dis­positif de répandage 6.The entire device shown in Figure 1 moves in the direction of advance of the chan tier (arrow 4) and comprises a finisher 5, an emulsion spreading device according to the invention 6 and a truck 7 enabling the asphalt paver 5 to be supplied with hot mixes, by means of the spreading device 6.

Le finisseur 5 comporte, de manière classi­que, un châssis supporté par des chenilles 8 sur le­quel repose une trémie de réception d'enrobés chauds 9, un ensemble de motorisation et de commande 10 comportant un poste de conduite, un convoyeur d'enro­bés chauds 11 et un répandeur d'enrobés 12.The paver 5 comprises, in a conventional manner, a chassis supported by tracks 8 on which rests a hot asphalt receiving hopper 9, a motorization and control assembly 10 comprising a driving position, a hot asphalt conveyor 11 and an asphalt spreader 12.

Une table 13 de lissage de la couche d'en­robés est placée derrière le dispositif de répandage 12.A table 13 for smoothing the coating layer is placed behind the spreading device 12.

On va maintenant se reporter aux figures 2, 3 et 4 pour décrire le dispositif 6 de répandage d'é­mulsion suivant l'invention.We will now refer to Figures 2, 3 and 4 to describe the device 6 for emulsion spreading according to the invention.

Le dispositif comporte un châssis 15 porté par des chenilles 16 et comportant, à sa partie anté­rieure, une barre de poussée 17 munie de rouleaux sur lesquels viennent s'appuyer les roues du camion ravi­tailleur d'enrobés 7.The device comprises a chassis 15 carried by tracks 16 and comprising, at its front part, a push bar 17 provided with rollers on which the wheels of the asphalt supply truck 7 rest.

Le châssis 15 porte, à sa partie antérieure, une trémie de réception d'enrobés chauds 18 et, à la suite de la trémie 18, sur toute sa longueur, un dis­positif de transfert d'enrobés 19 comportant un convoyeur 20 à chaîne et à barreaux d'acier et un élé­vateur 21 disposé à la suite du convoyeur 19 dont la partie d'extrémité constitue une trémie de déversement 22.The chassis 15 carries, at its front part, a hopper for receiving hot mixes 18 and, following the hopper 18, over its entire length, a mix transfer device 19 comprising a conveyor 20 with chain and steel bars and an elevator 21 arranged following the conveyor 19, the end part of which constitutes a discharge hopper 22.

L'élévateur 21 comporte deux chaînes sans fin 23 sur lesquelles sont fixées des palettes de re­levage 24 permettant de transporter les enrobés chauds depuis la sortie du convoyeur 19 jusqu'à la trémie de déversement 22 située à l'extrémité arrière du dispo­sitif 6 et au-dessus de la trémie de réception 9 du finisseur, lorsque le dispositif est en fonctionnement sur le chantier, comme représenté sur la figure 1.The elevator 21 comprises two endless chains 23 on which are lifted pallets 24 making it possible to transport the hot mixes from the outlet of the conveyor 19 to the hopper of discharge 22 located at the rear end of the device 6 and above the receiving hopper 9 of the paver, when the device is in operation on the site, as shown in FIG. 1.

Le châssis 15 du dispositif 6 porte égale­ment, dans sa partie médiane, une citerne d'émulsion 25 dont la capacité est de 10 m³. Cette citerne com­porte des moyens de réchauffage de l'émulsion et de distribution qui seront décrits, en référence à la fi­gure 5.The chassis 15 of the device 6 also carries, in its middle part, an emulsion tank 25 whose capacity is 10 m³. This tank includes means for reheating the emulsion and for distribution which will be described, with reference to FIG. 5.

Le réservoir 25 permet d'alimenter un ensem­ble de répandage d'émulsion 26 fixé à l'arrière et à la partie inférieure du châssis.The reservoir 25 makes it possible to supply an emulsion spreading assembly 26 fixed to the rear and to the lower part of the chassis.

Le dispositif de répandage 26 est constitué par une rampe centrale 26a fixée sur le châssis 15 et par deux rampes latérales 26b et 26c montées mobiles dans la direction transversale (flèche 27 sur la figu­re 3), sur la rampe centrale 26a. Le déplacement des rampes latérales 26b et 26c permet de modifier la lar­geur de la zone d'action du dispositif 26, en fonction de la largeur de la chaussée à recouvrir. Les rampes 26a, 26b et 26c sont munies de buses d'aspersion 28 dirigées vers le bas et réparties à des distances ré­gulières, suivant la longueur des rampes. Toutefois, la rampe 26a ne comporte pas de buse dans deux zones 26ʹ disposées suivant la longueur de la rampe, dans le prolongement des chenilles 8 du finisseur 5.The spreading device 26 is constituted by a central ramp 26a fixed on the frame 15 and by two lateral ramps 26b and 26c mounted movable in the transverse direction (arrow 27 in FIG. 3), on the central ramp 26a. The displacement of the lateral ramps 26b and 26c makes it possible to modify the width of the action area of the device 26, as a function of the width of the roadway to be covered. The booms 26a, 26b and 26c are provided with spray nozzles 28 directed downwards and distributed at regular distances, along the length of the booms. However, the ramp 26a does not have a nozzle in two zones 26ʹ arranged along the length of the ramp, in the extension of the tracks 8 of the finisher 5.

On évite ainsi toute mise en contact des chenilles du finisseur 5 avec la couche d'émulsion précédemment déposée. Le finisseur 5 comporte, à sa partie arrière, deux petites rampes situées dans le prolongement des chenilles 8 et immédiatement à l'a­vant du dispositif de répandage d'enrobés 12. De tel­les rampes complémentaires, de faible longueur et donc à faible débit d'emulsion, peuvent être alimentées à partir d'un petit réservoir d'émulsion porté par le finisseur ou à partir de la citerne du répandeur d'é­mulsion, par une conduite souple.This avoids any contacting of the tracks of the finisher 5 with the emulsion layer previously deposited. The finisher 5 comprises, at its rear part, two small ramps located in the extension of the tracks 8 and immediately in front of the asphalt spreading device 12. Such complementary ramps, of short length and therefore at low emulsion flow rate, can be supplied from a small emulsion tank carried by the finisher or from the tank of the emulsion spreader, via a flexible pipe.

La rampe centrale 26a est reliée au châssis 15 par l'intermédiaire d'un chariot 29 monté sur ga­lets, motorisé, permettant éventuellement un déplace­ment alternatif d'amplitude réduite et réglable des rampes, suivant la direction longitudinale du châssis 15. Le chariot 29 est muni d'un système vis-écrou ou similaire de réglage de hauteur de la rampe 26a par rapport au sol.The central ramp 26a is connected to the chassis 15 by means of a motorized carriage 29 mounted on rollers, optionally allowing an alternating movement of reduced and adjustable amplitude of the ramps, in the longitudinal direction of the chassis 15. The carriage 29 is provided with a screw-nut or similar system for adjusting the height of the ramp 26a relative to the ground.

Le châssis 15 porte également à son extrémi­té arrière deux flasques 30 parallèles et disposés la­téralement sur les côtés du châssis 15 comportant des ouvertures 31 débouchant vers l'arrière dans lesquel­les on peut introduire les extrémités de l'axe 33 d'une bobine de matière textile 32. La bobine 32 est ainsi montée rotative entre les flasques 30, ce qui permet de dévider une nappe de matière textile 34 de grande largeur sur la surface de la route 1, entre la couche d'accrochage déposée par les rampes 26 et la couche d'enrobés déposée par le finisseur 5.The chassis 15 also carries at its rear end two flanges 30 parallel and disposed laterally on the sides of the chassis 15 having openings 31 opening towards the rear into which the ends of the axis 33 of a spool of textile material can be introduced. 32. The coil 32 is thus rotatably mounted between the flanges 30, which makes it possible to unwind a sheet of textile material 34 of large width on the surface of the road 1, between the bonding layer deposited by the ramps 26 and the layer of asphalt deposited by the finisher 5.

La nappe de matière textile 34 est guidée sur son parcours et maintenue en tension, grâce à des rouleaux tels que 35 et 36.The sheet of textile material 34 is guided along its path and kept in tension, by means of rollers such as 35 and 36.

Le rouleau de textile 32 est légèrement freiné en rotation pour maintenir permanente la ten­sion du tissu.The textile roller 32 is slightly braked in rotation to maintain permanent tension in the fabric.

Le dispositif de déroulement de textile est constitué de simples supports d'axe de rouleaux. Le dévidage est assuré par la traction d'avancement du répandeur d'émulsion.The textile unwinding device consists of simple roller axle supports. The unwinding is ensured by the forward traction of the emulsion spreader.

De part et d'autre de l'élévateur 21, le châssis 15 porte un ensemble de motorisation 40 et un poste de conduite 41 comportant l'ensemble des comman­des de la machine et un siège pour le conducteur.On either side of the elevator 21, the chassis 15 carries a motorization assembly 40 and a driving position 41 comprising all the machine controls and a seat for the driver.

L'ensemble de motorisation 40 se compose d'un moteur thermique et de moyens de commande et de transmission hydrauliques.The motorization assembly 40 consists of a heat engine and hydraulic control and transmission means.

La transmission du mouvement aux chenilles 16 de la machine est de type hydrostatique, ce qui permet de régler facilement la vitesse d'avance à une valeur faible, parfaitement constante et parfaitement déterminée. On peut ainsi adapter la vitesse d'avance du dispositif de répandage d'émulsion sur le chantier, à la vitesse du finisseur. Le finisseur 5 et le dis­positif de répandage 6 ne sont en effet reliés par aucune liaison mécanique et comportent des moyens de motorisation totalement indépendants.The transmission of the movement to the tracks 16 of the machine is of the hydrostatic type, which allows the feed speed to be easily adjusted to a low value, perfectly constant and perfectly determined. It is thus possible to adapt the speed of advance of the emulsion spreading device on the site, to the speed of the paver. The finisher 5 and the spreading device 6 are in fact not connected by any mechanical connection and comprise totally independent motorization means.

En revanche, lorsqu'un camion tel que le camion 7 vient se présenter en position d'approvision­nement de la trémie 18 du dispositif de répandage d'é­mulsion, la barre de poussée 17 vient en contact avec les pneumatiques arrières du camion 7 et le dispositif de répandage 6 assure le déplacement du camion par poussée.On the other hand, when a truck such as the truck 7 comes to be in the supply position of the hopper 18 of the emulsion spreading device, the push bar 17 comes into contact with the rear tires of the truck 7 and the device spreader 6 ensures the movement of the truck by pushing.

La motorisation des éléments actifs du dis­positif de répandage, tels que le convoyeur 19, l'élé­vateur 21 et la pompe de distribution d'émulsion sont commandés, par transmission hydrostatique, depuis l'ensemble de motorisation 40.The motorization of the active elements of the spreading device, such as the conveyor 19, the elevator 21 and the emulsion distribution pump are controlled, by hydrostatic transmission, from the motorization assembly 40.

De cette façon, les débits d'enrobés et d'émulsion peuvent être fixés à des valeurs propor­tionnelles à la vitesse d'avancement du chantier.In this way, the mix and emulsion rates can be set at values proportional to the speed of progress of the site.

Sur la figure 5, on voit la citerne 25 rem­plie d'émulsion 42 qui est maintenue en température par un tube de chauffage 43 dans lequel circule de l'air chaud, par exemple fourni par un brûleur 44. Deux conduites 46 et 47 communiquent avec le volume interne de la citerne à sa partie inférieure et à sa partie supérieure respectivement. Sur la conduite 46 est placée une pompe volumétrique à vitesse variable 45. Les conduites 46 et 47 sont reliées entre elles et aux rampes 26a, 26b et 26c par l'intermédiaire d'une vanne à trois voies 48.In Figure 5, we see the tank 25 filled with emulsion 42 which is maintained at temperature by a heating tube 43 in which circulates hot air, for example supplied by a burner 44. Two pipes 46 and 47 communicate with the internal volume of the tank at its lower part and at its upper part respectively. On the line 46 is placed a variable speed positive displacement pump 45. The lines 46 and 47 are connected to each other and to the ramps 26a, 26b and 26c by means of a three-way valve 48.

Suivant la position de l'obturateur de la vanne, il est possible de faire circuler l'émulsion en circuit fermé pour assurer son brassage ou d'envoyer l'émulsion dans les rampes 26a, 26b, 26c qui assurent la distribution de l'émulsion grâce aux buses 28. Les rampes de répandage sont reliées, en aval de la vanne à trois voies 48, à une conduite 49 en communication avec un récipient d'air comprimé 51, par l'intermé­diaire d'une vanne de sectionnement 50.Depending on the position of the valve shutter, it is possible to circulate the emulsion in a closed circuit to ensure its mixing or to send the emulsion into the ramps 26a, 26b, 26c which ensure the distribution of the emulsion by means of the nozzles 28. The spreading ramps are connected, downstream of the three-way valve 48, to a pipe 49 in communication with a container of compressed air 51, via a sectioning valve 50.

Après un arrêt de la machine de répandage, il est ainsi possible d'effectuer la purge des rampes 26a, 26b, 26c et des buses 28, en envoyant de l'air comprimé dans ces rampes par ouverture de la vanne 50.After stopping the spreading machine, it is thus possible to purge the ramps 26a, 26b, 26c and the nozzles 28, by sending compressed air into these ramps by opening the valve 50.

On va maintenant décrire, en se reportant à l'ensemble des figures, le mode de fonctionnement du dispositif suivant l'invention.We will now describe, with reference to all of the figures, the operating mode of the device according to the invention.

Comme il est visible sur la figure 1, un camion 7 d'approvisionnement d'enrobés chauds (c'est-­à-dire à une température voisine ou supérieure à 150°C) est placé à l'avant du dispositif de répandage 6 qui assure alors son déplacement par poussée à sa vitesse d'avance sur le chantier. La benne du camion 7 est inclinée de façon à déverser les enrobés chauds dans la trémie 18 du dispositif de répandage 6 qui est analogue à la trémie 9 disposée à l'avant du finisseur 5. Les enrobés chauds sont transportés par le convo­yeur 20 et l'élévateur 21 jusqu'à la trémie 22 qui as­sure leur déversement en continu dans la trémie de ré­ception 9 du finisseur 5. Le convoyeur 11 du finisseur assure le transport en continue des enrobés chauds jus­qu'au dispositif de répandage 12.As can be seen in FIG. 1, a truck 7 for supplying hot mixes (that is to say at a temperature close to or above 150 ° C.) is placed at the front of the spreading device 6 which then ensures its displacement by pushing at its advance speed on the site. The bucket of the truck 7 is inclined so as to pour the hot mixes into the hopper 18 of the spreading device 6 which is similar to the hopper 9 placed at the front of the paver 5. The hot mixes are transported by the conveyor 20 and the elevator 21 to the hopper 22 which ensures their continuous discharge into the receiving hopper 9 of the paver 5. The conveyor 11 of the paver ensures the continuous transport of the mixes hot to the spreader 12.

Simultanément, les rampes de l'ensemble de répandage 26 assurent la distribution et la réparti­tion de l'émulsion sur la surface 1 de la route, à un endroit situé juste à l'avant du finisseur 5. La nappe de matière textile 34 est appliquée aussitôt sur la couche d'émulsion qui vient d'être déposée par les buses 28 des rampes.Simultaneously, the ramps of the spreading assembly 26 ensure the distribution and distribution of the emulsion on the surface 1 of the road, at a location just in front of the finisher 5. The sheet of textile material 34 is applied immediately on the emulsion layer which has just been deposited by the nozzles 28 of the ramps.

Les buses 28 projettent l'émulsion sur la surface 1 de la route, sous forme de jets plats join­tifs et sans superposition.The nozzles 28 project the emulsion onto the surface 1 of the road, in the form of contiguous flat jets and without overlapping.

Les enrobés chauds 52 sont répandus par le dispositif 12, de façon qu'ils viennent en contact avec la surface supérieure de la nappe textile 34 elle-même en contact avec la couche d'accrochage 3 constituée par l'émulsion.The hot mixes 52 are spread by the device 12, so that they come into contact with the upper surface of the textile sheet 34 itself in contact with the bonding layer 3 formed by the emulsion.

La chaleur de l'enrobé 52 produit un séchage et une rupture très rapide de l'émulsion dont l'eau entre en ébullition au contact avec les enrobés à 150°C. Cette ébullition produit une dispersion du bi­tume de l'émulsion dans la sous-couche 1 de la route et dans la couche d'enrobés 2, ce qui procure un ac­crochage efficace de la couche d'enrobés sur la route.The heat of the mix 52 produces a very rapid drying and rupture of the emulsion, the water of which boils on contact with the mixes at 150 ° C. This boiling produces a dispersion of the bitumen of the emulsion in the sub-layer 1 of the road and in the asphalt layer 2, which provides an effective attachment of the asphalt layer on the road.

Il est à noter que la nappe de matière tex­tile 34 ne gêne en rien les échanges thermiques entre l'enrobé et la couche d'émulsion et la dispersion du bitume dans la zone de jonction.It should be noted that the sheet of textile material 34 does not hinder in any way the heat exchanges between the mix and the emulsion layer and the dispersion of the bitumen in the junction zone.

On a pu utiliser le dispositif suivant l'in­vention pour le répandage de couches d'accrochage de 0,2 à 0,8 kg/m², la vitesse d'avancement du dispositif et du finisseur sur le chantier étant comprise entre 4 et 8 m/mn. Comme indiqué, le dosage est réalisé par la pompe volumétrique 45 dont la vitesse est proportion­nelle à la vitesse d'avancement du dispositif de ré­pandage.It was possible to use the device according to the invention for spreading bonding layers of 0.2 to 0.8 kg / m², the speed of advance of the device and the finisher on the site being between 4 and 8 m / min. As indicated, the metering is carried out by the positive displacement pump 45 whose speed is proportional to the speed of advance of the spreading device.

Dans le cas des plus forts dosages, c'est-à-­dire dans le cas de couche d'émulsion de 0,6 à 0,8 kg/m², la vitesse du dispositif de répandage étant de 6 à 8 m/mn, on réalise le répandage en continu, comme il a été décrit.In the case of the highest dosages, that is to say in the case of an emulsion layer of 0.6 to 0.8 kg / m², the speed of the spreading device being 6 to 8 m / min, the spreading is carried out continuously, as has been described.

Pour les plus faibles dosages, et en parti­culier lorsque la quantité d'émulsion est de l'ordre de 0,2 kg/m², il est préférable de réaliser le répan­dage de façon discontinue. Les rampes de répandage sont animées d'un mouvement dans la direction longitu­dinale du dispositif. Simultanément, la vitesse d'a­vancement du dispositif est ajustée pour réaliser une séquence permettant le répandage par bandes transver­sales successives.For lower dosages, and in particular when the amount of emulsion is of the order of 0.2 kg / m², it is preferable to carry out the spreading discontinuously. The spreading ramps are moved in the longitudinal direction of the device. Simultaneously, the advancement speed of the device is adjusted to achieve a sequence allowing spreading by successive transverse bands.

Le dispositif suivant l'invention a l'avan­tage de permettre une mise en oeuvre d'un procédé où les enrobés chauds sont déposés sur la couche d'accro­chage très rapidement après son application sur la route, tout en utilisant un finisseur de type classi­que. De plus, l'autonomie du dispositif est considéra­blement accrue, puisque la citerne d'émulsion portée par un châssis totalement indépendant du finisseur peut avoir une grande capacité. En outre, l'autonomie du dispositif est également accrue par le fait qu'une réserve d'enrobés chauds se trouve présente dans le dispositif de transfert du répandeur d'émulsion, après le déchargement d'un camion. Cette réserve permet au minimum de doubler la réserve contenue dans le dispo­sitif de transfert du finisseur.The device according to the invention has the advantage of allowing an implementation of a process where the hot mixes are deposited on the bonding layer very quickly after its application on the road, while using a conventional type finisher. In addition, the autonomy of the device is considerably increased, since the emulsion tank carried by a chassis completely independent of the finisher can have a large capacity. In addition, the autonomy of the device is also increased by the fact that a reserve of hot mixes is present in the transfer device of the emulsion spreader, after the unloading of a truck. This reserve allows at least to double the reserve contained in the finisher transfer device.

L'invention ne se limite pas au mode de réa­lisation qui a été décrit.The invention is not limited to the embodiment which has been described.

C'est ainsi qu'on peut prévoir sur le dispo­sitif de répandage, une citerne d'émulsion d'une capa­cité différente de 10 m³. Cette capacité sera cepen­dant de préférence comprise entre 5 et 10 m³ et, de toute façon, supérieure à 2 m³, pour assurer une auto­nomie suffisante du dispositif sur le chantier. Dans le cas où la capacité est supérieure à 5 m³, on devra prévoir un dispositif de réchauffage de l'émulsion.Thus, on the spreading device, an emulsion tank with a capacity different from 10 m³ can be provided. This capacity will however preferably be between 5 and 10 m³ and, in any case, greater than 2 m³, to ensure sufficient autonomy of the device on the site. If the capacity is greater than 5 m³, an emulsion reheating device must be provided.

Le dispositif de transfert des enrobés chauds placé suivant la longueur du répandeur d'émul­sion pourrait être réalisé sous une forme différente de celle qui a été décrite.The device for transferring hot mixes placed along the length of the emulsion spreader could be produced in a form different from that which has been described.

Les rampes de répandage d'émulsion pourront avoir une autre forme et une autre répartition que celles qui ont été décrites.The emulsion spreading ramps may have a different shape and a different distribution than those which have been described.

On peut prévoir aussi bien une rampe conti­nue mais ne comportant pas de buses dans les zones situées dans le prolongement des chenilles du finis­seur qu'une rampe interrompue dans ces zones.It is possible to provide both a continuous ramp but having no nozzles in the zones located in the extension of the tracks of the finisher as a interrupted ramp in these zones.

Le dispositif de répandage suivant l'inven­tion peut être monté sur des chenilles ou sur des roues. Ce dispositif peut être automoteur ou son dé­placement peut être assuré par poussée, grâce au fi­nisseur.The spreading device according to the invention can be mounted on tracks or on wheels. This device can be self-propelled or its movement can be ensured by pushing, thanks to the finisher.

Le dispositif de transfert d'enrobés chauds placé suivant la longueur du répandeur d'émulsion peut être simplifié et la trémie de réception supprimée, dans le cas où l'alimentation en enrobés est assurée par un ramasseur de cordon. Dans ce cas, le dispositif de répandage d'émulsion sera de préférence relié méca­niquement au finisseur.The device for transferring hot mixes placed along the length of the emulsion spreader can be simplified and the receiving hopper eliminated, in the case where the supply of mixes is ensured by a bead picker. In this case, the emulsion spreading device will preferably be mechanically connected to the finisher.

Il est également possible d'atteler au ré­pandeur d'émulsion une table flottante de lissage des enrobés. Dans ce cas, le finisseur de répandage des enrobés n'est plus nécessaire.It is also possible to attach to the emulsion spreader a floating table for smoothing asphalt. In this case, the asphalt spreader is no longer necessary.

Claims (12)

1.- Dispositif de répandage d'émulsion bitu­mineuse sur la surface (1) d'une route, pour la cons­titution d'une couche d'accrochage (3) préalablement au dépôt d'une couche (2) d'enrobés bitumineux à chaud par un finisseur (5) comportant un châssis (15) et des moyens de roulement (16) indépendants du finisseur (5) caractérisé par le fait qu'il comporte, montés sur le châssis (15), un dispositif de réception d'enrobés chauds (18) à sa partie avant, un dispositif de trans­fert des enrobés (19, 21) disposé à la suite du dispo­sitif de réception (18), sur toute la longueur du châssis (15), ayant une extrémité de déversement (22) située à l'arrière du châssis (15), un réservoir d'é­mulsion bitumineuse (25) d'une capacité au moins égale à 2 m³ et une rampe (26) de répandage d'émulsion sur la route alimentée par le réservoir (25) et placée transversalement à l'arrière du châssis (15).1.- Device for spreading bituminous emulsion on the surface (1) of a road, for the constitution of a bonding layer (3) before depositing a layer (2) of hot bituminous mixes by a paver (5) comprising a chassis (15) and rolling means (16) independent of the paver (5) characterized in that it comprises, mounted on the chassis (15), a device for receiving asphalt mixes hot (18) at its front part, a transfer device for asphalt mixes (19, 21) arranged after the receiving device (18), over the entire length of the chassis (15), having a discharge end (22) located at the rear of the chassis (15), a bituminous emulsion tank (25) with a capacity at least equal to 2 m³ and a ramp (26) for spreading emulsion on the road supplied by the tank (25 ) and placed transversely at the rear of the chassis (15). 2.- Dispositif de répandage suivant la re­vendication 1, caractérisé par le fait que le réser­voir d'émulsion bitumineuse a une capacité comprise entre 5 et 10 m³.2. A spreading device according to claim 1, characterized in that the bituminous emulsion tank has a capacity of between 5 and 10 m³. 3.- Dispositif de répandage suivant l'une quelconque des revendications 1 et 2, caractérisé par le fait que le dispositif de transfert (19) des enro­bés comporte un convoyeur sensiblement horizontal (20) et un élévateur incliné (21) terminé par une trémie de déversement (22).3.- spreading device according to any one of claims 1 and 2, characterized in that the transfer device (19) of the mixes comprises a substantially horizontal conveyor (20) and an inclined elevator (21) terminated by a hopper discharge (22). 4.- Dispositif de répandage suivant l'une quelconque des revendications 1, 2 et 3, caractérisé par le fait qu'il comporte un ensemble de motorisation (40) constitué par un moteur thermique et des moyens de commande et de transmission hydraulique pour assu­rer son avancement à vitesse réglée sur le chantier.4.- spreading device according to any one of claims 1, 2 and 3, characterized in that it comprises a motor assembly (40) consisting of a heat engine and hydraulic control and transmission means for ensuring advancing at a set speed on site. 5.- Dispositif de répandage selon l'une quelconque des revendications 1 à 4, caractérisé par le fait que la rampe de répandage d'émulsion (26) comporte une partie centrale (26a) reliée au châssis (15) et deux parties latérales (26b, 26c) montées mo­biles dans la direction transversale par rapport à la partie centrale, pour l'ajustement en largeur de la rampe (26) de répandage.5. A spreading device according to any one of claims 1 to 4, characterized in that the emulsion spreading ramp (26) has a central part (26a) connected to the frame (15) and two lateral parts ( 26b, 26c) mounted movable in the transverse direction relative to the central part, for adjusting the width of the spreading ramp (26). 6.- Dispositif de répandage selon l'une quelconque des revendications 1 à 5, caractérisé par le fait que la rampe de répandage d'émulsion (26a) présente deux zones (26ʹ), s'étendant suivant sa lon­gueur, dans lesquelles le répandage d'émulsion n'est pas réalisé.6. A spreading device according to any one of claims 1 to 5, characterized in that the emulsion spreading ramp (26a) has two zones (26ʹ), extending along its length, in which the spreading emulsion is not produced. 7.- Dispositif de répandage suivant l'une quelconque des revendications 1 à 6, caractérisé par le fait que la rampe de répandage (26a) est reliée au châssis (15) par l'intermédiaire d'un chariot (29) mo­torisé, permettant un déplacement alternatif et régla­ble de la rampe (26a), suivant la direction longitudi­nale du châssis (15).7. A spreading device according to any one of claims 1 to 6, characterized in that the spreading ramp (26a) is connected to the chassis (15) by means of a motorized carriage (29), allowing an alternative and adjustable movement of the ramp (26a), in the longitudinal direction of the frame (15). 8.- Dispositif de répandage suivant l'une quelconque des revendications 1 à 7, caractérisé par le fait que le réservoir d'émulsion bitumineuse (25) comporte un moyen de chauffage (43) de l'émulsion.8. A spreading device according to any one of claims 1 to 7, characterized in that the bituminous emulsion tank (25) comprises a heating means (43) of the emulsion. 9.- Dispositif de répandage suivant l'une quelconque des revendications 1 à 8, caractérisé par le fait que la rampe de répandage (26) est reliée par une conduite (49) à un réservoir d'air comprimé (51), par l'intermédiaire d'une vanne (50) pour réaliser la purge de la rampe (26), après du dispositif de répandage.9. A spreading device according to any one of claims 1 to 8, characterized in that the spreading ramp (26) is connected by a pipe (49) to a compressed air tank (51), by l 'Intermediate of a valve (50) to perform the purge of the ramp (26), after the spreading device. 10.- Dispositif de répandage suivant l'une quelconque des revendications 1 à 9, caractérisé par le fait qu'il comporte, à sa partie avant, un moyen (17) de poussée d'un camion (7), pour assurer l'appro­visionnement en enrobés chauds (52) du dispositif de réception (18), à la partie avant du dispositif de ré­pandage, pendant son avancement sur le chantier.10.- spreading device according to any one of claims 1 to 9, characterized by the fact that it comprises, at its front part, a means (17) for pushing a truck (7), to ensure the supply of hot mixes (52) of the receiving device (18), to the front part of the spreading device, during its progress on the site. 11.- Dispositif de répandage suivant l'une quelconque des revendications 1 à 10, caractérisé par le fait qu'il comporte un dispositif (30, 32, 33, 35, 36) de déroulement et d'application d'une nappe tex­tile (34), à sa partie arrière, devant le finisseur (5).11. A spreading device according to any one of claims 1 to 10, characterized in that it comprises a device (30, 32, 33, 35, 36) for unwinding and applying a textile sheet ( 34), at its rear, in front of the finisher (5). 12.- Utilisation sur un chantier routier d'un dispositif de répandage suivant l'une quelconque des revendications 1 à 11, en combinaison avec un ca­mion d'approvisionnement en enrobés (7) et un finis­seur (5), le dispositif de répandage d'émulsion (6) étant placé à l'arrière du camion (7) et à l'avant du finisseur (5) dans le sens (4) d'avancement du chan­tier routier, de façon que le dispositif de réception d'enrobés (18) puisse recevoir les enrobés du camion (7), et que l'extrémité de déversement (22) du dispo­sitif de transfert d'enrobés (19, 21) assurent le dé­versement des enrobés (52) dans la trémie de réception (9) du finisseur (5).12.- Use on a road site of a spreading device according to any one of claims 1 to 11, in combination with a asphalt supply truck (7) and a paver (5), the spreading device d emulsion (6) being placed at the rear of the truck (7) and at the front of the paver (5) in the direction (4) of advancement of the road construction site, so that the asphalt receiving device ( 18) can receive the mixes from the truck (7), and that the discharge end (22) of the mix transfer device (19, 21) ensure the discharge of the mixes (52) into the receiving hopper (9) finisher (5).
EP88400332A 1987-02-24 1988-02-15 Apparatus for spreading a bituminous emulsion on a road surface without lorries circulating over the adhesion layer formed by spreading this emulsion Expired - Lifetime EP0292337B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88400332T ATE55434T1 (en) 1987-02-24 1988-02-15 DEVICE FOR APPLICATION OF BITUMINOUS EMULSION ON ROAD COATINGS WITHOUT CIRCULATION OF TRUCKS ON THE ADHESIVE LAYER MANUFACTURED BY THE APPLICATION OF EMULSION.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8702408A FR2611766B1 (en) 1987-02-24 1987-02-24 BITUMINOUS EMULSION SPREADING DEVICE ON THE SURFACE OF A ROAD WITHOUT TRUCK TRAFFIC ON THE HANGING LAYER MADE BY EMULSION SPREADING
FR8702408 1987-02-24

Publications (2)

Publication Number Publication Date
EP0292337A1 true EP0292337A1 (en) 1988-11-23
EP0292337B1 EP0292337B1 (en) 1990-08-08

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EP88400332A Expired - Lifetime EP0292337B1 (en) 1987-02-24 1988-02-15 Apparatus for spreading a bituminous emulsion on a road surface without lorries circulating over the adhesion layer formed by spreading this emulsion

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EP (1) EP0292337B1 (en)
AT (1) ATE55434T1 (en)
DE (1) DE3860421D1 (en)
ES (1) ES2022643B3 (en)
FR (1) FR2611766B1 (en)
GR (1) GR3000919T3 (en)

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FR2643924A1 (en) * 1989-03-06 1990-09-07 Acmar Method for actuating a distributor for spreading bitumen, and device for implementing this method
EP0409700A1 (en) * 1989-07-21 1991-01-23 Screg Routes Et Travaux Publics Process and apparatus for making a coating on a surface such as a road
FR2662193A1 (en) * 1990-05-21 1991-11-22 Colas Sa DEVICE FOR SPREADING A FLUID MATERIAL, IN PARTICULAR A BITUMINOUS MIXING EMULSION, AND PAVEMENT CONSTRUCTION MACHINE COMPRISING SUCH A DEVICE.
EP0462873A1 (en) * 1990-06-21 1991-12-27 Colas S.A. Device for spreading a fluid substance and apparatus for simultaneously applying this substance and a road-covering material
EP0464313A1 (en) * 1990-06-22 1992-01-08 Marini S.P.A. Automatic asphalt paver machine for roads and other paved areas
EP0470877A1 (en) * 1990-08-08 1992-02-12 Colas S.A. Device for spreading a fluid substance and machine allowing simultaneous application of the substance and road covering material
FR2668511A1 (en) * 1990-10-30 1992-04-30 Acmar METHOD FOR SPEEDING BITUMEN AT LOW SPEED, DEVICE FOR IMPLEMENTATION AND MACHINE COMPRISING SUCH A DEVICE
FR2668513A1 (en) * 1990-10-30 1992-04-30 Colas Sa ROAD VEHICLE FOR THE SPREADING OF REHABILITATION MATERIALS, WITH INTEGRATED COMPACTOR.
JPH04203006A (en) * 1990-11-30 1992-07-23 Katsuyama Kensetsu Kogyo Kk Method and apparatus for paving road
EP0517579A1 (en) * 1991-06-04 1992-12-09 Colas S.A. Road paving machine
FR2677680A1 (en) * 1991-06-12 1992-12-18 Abg Werke Gmbh Finishing machine
FR2681885A1 (en) * 1991-10-01 1993-04-02 Colas Sa DEVICE FOR SPREADING AN EMULSION FOR HANGING BUTUMINOUS COATINGS OR THE LIKE, AND PAVEMENT CONSTRUCTION MACHINE COMPRISING SUCH A DEVICE.
AU637763B1 (en) * 1991-09-11 1993-06-03 Turnbull James Philip
NL1007903C2 (en) * 1997-12-24 1999-06-30 Wth Vloerverwarming B V Device for generating sustainable energy and method for forming it.
EP1837442A1 (en) * 2006-03-24 2007-09-26 Joseph Voegele AG Paving train
GB2452903A (en) * 2006-09-19 2009-03-25 Colas Sa Bond coat
US10385521B1 (en) 2018-05-10 2019-08-20 Caterpillar Sarl Paving machine with an emulsion tank

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US10273640B1 (en) 2018-05-10 2019-04-30 Caterpillar Sarl Paving machine with emulsion spray bar
CN109137681A (en) * 2018-11-02 2019-01-04 西安达刚路面机械股份有限公司 A kind of spread paves all-in-one machine
CN114808614B (en) * 2022-04-14 2023-05-16 湖南文理学院 Grid reinforced asphalt mixture bridge deck pavement equipment of concrete bridge

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Cited By (34)

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Publication number Priority date Publication date Assignee Title
FR2643924A1 (en) * 1989-03-06 1990-09-07 Acmar Method for actuating a distributor for spreading bitumen, and device for implementing this method
EP0409700A1 (en) * 1989-07-21 1991-01-23 Screg Routes Et Travaux Publics Process and apparatus for making a coating on a surface such as a road
FR2650005A1 (en) * 1989-07-21 1991-01-25 Screg Routes & Travaux METHOD AND DEVICE FOR PRODUCING A SURFACE COATING ON A SURFACE SUCH AS A PAVEMENT
US5069578A (en) * 1989-07-21 1991-12-03 Screg Routes Et. Travaux Publics Method and device for producing a surface coating on a surface such as a road
FR2662193A1 (en) * 1990-05-21 1991-11-22 Colas Sa DEVICE FOR SPREADING A FLUID MATERIAL, IN PARTICULAR A BITUMINOUS MIXING EMULSION, AND PAVEMENT CONSTRUCTION MACHINE COMPRISING SUCH A DEVICE.
EP0458667A1 (en) * 1990-05-21 1991-11-27 Colas S.A. Spreading device for liquid materials or the like, particularly for a bonding emulsion for bituminous coated materials on the road surface and road making machine particularly finisher
US5324136A (en) * 1990-05-21 1994-06-28 Colas S.A. Apparatus for spreading bonding emulsion or similar material for road asphalt
US5178486A (en) * 1990-06-21 1993-01-12 Colas S.A. Device for spreading a fluid substance, and machine permitting the simultaneous application of this substance and of the surfacing of a highway
EP0462873A1 (en) * 1990-06-21 1991-12-27 Colas S.A. Device for spreading a fluid substance and apparatus for simultaneously applying this substance and a road-covering material
FR2663654A1 (en) * 1990-06-21 1991-12-27 Colas Sa DEVICE FOR SPREADING A FLUID SUBSTANCE AND MACHINE FOR THE SIMULTANEOUS APPLICATION OF SUCH SUBSTANCE AND COATING OF A PAVEMENT.
EP0464313A1 (en) * 1990-06-22 1992-01-08 Marini S.P.A. Automatic asphalt paver machine for roads and other paved areas
US5279500A (en) * 1990-08-08 1994-01-18 Colas S.A. Apparatus for spreading a road surfacing material
FR2665717A1 (en) * 1990-08-08 1992-02-14 Colas Sa DEVICE FOR SPREADING A FLUID SUBSTANCE AND MACHINE FOR THE SIMULTANEOUS APPLICATION OF SUCH SUBSTANCE AND COATING OF A PAVEMENT.
EP0470877A1 (en) * 1990-08-08 1992-02-12 Colas S.A. Device for spreading a fluid substance and machine allowing simultaneous application of the substance and road covering material
EP0484189A1 (en) * 1990-10-30 1992-05-06 Colas S.A. Road vehicle with integral roller for spreading material for road repair
EP0484236A1 (en) * 1990-10-30 1992-05-06 A C M A R Société à Responsabilité Limitée Method of spreading bitumen at low velocity, device used in such a method and machine comprising such a device
FR2668511A1 (en) * 1990-10-30 1992-04-30 Acmar METHOD FOR SPEEDING BITUMEN AT LOW SPEED, DEVICE FOR IMPLEMENTATION AND MACHINE COMPRISING SUCH A DEVICE
US5190399A (en) * 1990-10-30 1993-03-02 Colas S.A. Road vehicle for the spreading of materials for repair of the highway, with integrated compactor
FR2668513A1 (en) * 1990-10-30 1992-04-30 Colas Sa ROAD VEHICLE FOR THE SPREADING OF REHABILITATION MATERIALS, WITH INTEGRATED COMPACTOR.
JPH04203006A (en) * 1990-11-30 1992-07-23 Katsuyama Kensetsu Kogyo Kk Method and apparatus for paving road
EP0517579A1 (en) * 1991-06-04 1992-12-09 Colas S.A. Road paving machine
FR2677383A1 (en) * 1991-06-04 1992-12-11 Colas Sa FINISHER TYPE PAVEMENT CONSTRUCTION MACHINE.
FR2677680A1 (en) * 1991-06-12 1992-12-18 Abg Werke Gmbh Finishing machine
AU637763B1 (en) * 1991-09-11 1993-06-03 Turnbull James Philip
EP0536052A1 (en) * 1991-10-01 1993-04-07 Colas S.A. Device for distributing a bonding emulsion for bituminous coated materials or similar fluids, and road making machine comprising such a device
FR2681885A1 (en) * 1991-10-01 1993-04-02 Colas Sa DEVICE FOR SPREADING AN EMULSION FOR HANGING BUTUMINOUS COATINGS OR THE LIKE, AND PAVEMENT CONSTRUCTION MACHINE COMPRISING SUCH A DEVICE.
US5354148A (en) * 1991-10-01 1994-10-11 Colas Apparatus for spreading a bonding emulsion, or similar fluids, and road-building machine
NL1007903C2 (en) * 1997-12-24 1999-06-30 Wth Vloerverwarming B V Device for generating sustainable energy and method for forming it.
WO1999034155A1 (en) * 1997-12-24 1999-07-08 Wth Vloerverwarming B.V. Method for installing an energy conversion apparatus in a paving
EP1837442A1 (en) * 2006-03-24 2007-09-26 Joseph Voegele AG Paving train
US7572081B2 (en) 2006-03-24 2009-08-11 Joseph Voegele Ag Paving convoy
GB2452903A (en) * 2006-09-19 2009-03-25 Colas Sa Bond coat
GB2452903B (en) * 2006-09-19 2011-12-14 Colas Sa Bond coat
US10385521B1 (en) 2018-05-10 2019-08-20 Caterpillar Sarl Paving machine with an emulsion tank

Also Published As

Publication number Publication date
FR2611766B1 (en) 1989-06-30
ES2022643B3 (en) 1991-12-01
DE3860421D1 (en) 1990-09-13
ATE55434T1 (en) 1990-08-15
EP0292337B1 (en) 1990-08-08
FR2611766A1 (en) 1988-09-09
GR3000919T3 (en) 1991-12-10

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