EP0325533A1 - Spray bars for bitumen - Google Patents

Spray bars for bitumen Download PDF

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Publication number
EP0325533A1
EP0325533A1 EP89400149A EP89400149A EP0325533A1 EP 0325533 A1 EP0325533 A1 EP 0325533A1 EP 89400149 A EP89400149 A EP 89400149A EP 89400149 A EP89400149 A EP 89400149A EP 0325533 A1 EP0325533 A1 EP 0325533A1
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EP
European Patent Office
Prior art keywords
ramp
fixed
diffusers
bitumen
mobile
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.)
Withdrawn
Application number
EP89400149A
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German (de)
French (fr)
Inventor
Bernard Luzu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
A C M A R A Responsabilite Ltee Ste
Acmar SAS
Original Assignee
A C M A R A Responsabilite Ltee Ste
Acmar SAS
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by A C M A R A Responsabilite Ltee Ste, Acmar SAS filed Critical A C M A R A Responsabilite Ltee Ste
Publication of EP0325533A1 publication Critical patent/EP0325533A1/en
Withdrawn legal-status Critical Current

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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
    • E01C19/12—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

Definitions

  • the present invention relates to bitumen spreading ramps generally installed at the rear of vehicles specially fitted out for road works.
  • bitumen ramps comprising means which make it possible to increase, laterally, the width of spreading of the bitumen.
  • the vehicles used for the spreading have a width normally limited to the width of the road gauge.
  • the vehicles used for the spreading have a width normally limited to the width of the road gauge.
  • the invention provides an improved ramp which meets the specific needs of users. It allows in particular the production of a uniform layer of bitumen, when the working width is large due to the use of the possibilities of lateral extensions.
  • the bitumen spreading ramp comprises a series of diffusers regularly spaced over its entire width; it consists of a fixed ramp at the rear of the carrier vehicle and two mobile ramps, parallel to said fixed ramp, on either side laterally.
  • the fixed ramp comprises identical diffusers over its entire width;
  • the mobile ramps include diffusers identical to those of the fixed ramp except at the lateral ends where the diffusers are different to compensate for the absence of overlap of the last jet (s); which diffusers are located, laterally, beyond the end diffusers of the fixed ramp.
  • the ordinary diffusers of the two movable ramps correspond to the diffusers of the fixed ramp, that is to say that they are in the same alignment in the rest position, and only function to complement the diffusers of said diffuser. fixed ramp.
  • the diffusers arranged at the lateral ends of the mobile ramps have the same flow rate as the ordinary diffusers of the rest of the ramp, but they have a jet of different shape to achieve, at the edge of the layer, an equivalent bitumen thickness. to that of the rest of said layer obtained by the triple thickness covering of said ordinary diffusers.
  • the mobile ramps are implemented by translation means controlled by the pitch of the diffusers; these means consist of actuating cylinders or a gear motor with rack and pinion system.
  • the spreading ramp comprises a fixed ramp extending over the entire normal width of the vehicle inside the template and two movable half-ramps supported by the fixed ramp either by means of resistant rollers at high temperature, arranged at each end of the fixed ramp and rollers rolling on a guide rail also fixed on the fixed ramp, either by means of telescopic slides.
  • the supply of bitumen is carried out by means of hoses with rotating connection on each of the mobile ramps; each end of the mobile ramps is connected by flexible hose with a rotating connection to the corresponding end of the fixed ramp.
  • the bitumen supply to the different parts of the ramp is carried out by means of pipes fitted with rotary joints; this supply by rigid tubes has the advantage of providing greater security against the risks of bursting of the hoses usually used.
  • the mobile ramps and / or the fixed ramps include a heating device.
  • the spreading ramp 1 comprises a plurality of diffusers 2 regularly spaced over the entire width of the ramp.
  • This ramp 1 is normally fixed to the rear of a not shown spreading vehicle, which advances along the arrow.
  • This type of ramp usually comprises at each of its ends diffusers, the jet of which is different to compensate for the absence of overlap.
  • these ramps spread the binder, the thickness of which on the road generally results from the flow of three jets.
  • the three coverings are necessary to achieve a good transverse distribution of the bitumen.
  • a good distribution is also obtained at the ends thanks to the use of diffusers whose jets have a shape different from that of the other jets of the boom.
  • FIG. 2 shows the spreading ramp according to the invention which is in fact a telescopic ramp, consisting of a fixed ramp 1 and two mobile ramps 3, perfectly symmetrical, with respect to the median plane perpendicular to said ramp 1.
  • the ramp 1 comprises, in a conventional manner diffusers 2 all having the same jet.
  • the 2E diffusers with different jets have been removed from the fixed ramp to be transferred, in the same position, to each end of the mobile ramps 3.
  • the other diffusers of the mobile ramps are identical to the diffusers 2 of the fixed ramp 1.
  • the 2E diffusers have a jet whose width on the ground is reduced by a third compared to the other jets of ordinary diffusers 2.
  • the jet of the 2E diffuser has a thickness identical to that of the other jets over half its width and a thickness double on the other half which sprinkles and forms the outer border of the bitumen layer.
  • the fixed ramp 1 is carried by the spreading vehicle, not shown.
  • This fixed ramp 1 supports the two mobile ramps 3, which are arranged at the rear of the fixed ramp 1 and extend, substantially, each over half the width of said fixed ramp 1.
  • These mobile ramps 3 are supported by a roller 4 disposed at each end of the fixed ramp 1, and by means of a rail 5 supported by said ramp 1, by rollers 6 located at the central end of the mobile ramps 3 and integral with the latter; these different means guide said mobile ramps 3 in translation, parallel to the fixed ramp 1, on either side of the latter, laterally. It is also possible to provide guidance for the mobile ramps by means of telescopic slides.
  • FIG 3 a schematic section of the ramp according to the invention showing the fixed ramp 1, and its diffusers 2; the mobile ramp 3 is supported and guided by the roller 4 secured to the fixed ramp 1, by means of a raceway 5 which extends over the entire length of said mobile ramp 3, at the top of the latter.
  • This raceway 7 has a flat part which rolls on said roller and a vertical edge for lateral guidance.
  • the roller 4 has a horizontal axis, perpendicular to the ramp 1; it is positioned between said ramp 1 and the vertical edge of path 7.
  • the ramp supply means allow a routing of the bitumen throughout the ramp, coming from a booster pump located at the outlet of the tank, not shown, and a controlled return of the bitumen to said storage tank.
  • the arrival of the bitumen is carried out, for example, by means of a hose 8 connected by a rotary connector 9 to the central end of one of the mobile ramps 3; the bitumen circulates in said mobile ramp 3 to exit at its end, at the level of the diffuser 2E and departs via a pipe 10, parallel to the mobile ramp in question 3, which can be heated by any conventional means, this pipe refocuses the start of the flexible 11 for supplying the fixed ramp 1, again by means of a rotary connector 12; said flexible 11 arrives at the corresponding end of the fixed ramp 1 so as to circulate the bitumen in said ramp 1 before returning it by an equivalent flexible 11 ′, in the other ramp 3 at the central end of which the bitumen returns via line 8 'to the storage tank of the vehicle not shown.
  • the two movable ramps 3 each have a pipe 10 which allows the connection of the flexible 11 and 11 'interposed between said movable ramps and the fixed ramp.
  • the heating blocks 13 are interposed between these pipes 10 and the mobile ramps 3, they preferably extend over a length which makes it possible to heat both the bitumen which circulates in said pipes 10 and that which circulates in said mobile ramps , maintaining good fluidity of the bitumen around the diffusers 2, 2E. It is also possible to use heaters integrated directly into the ramps, both fixed and mobile ramps.
  • FIG. 4 shows in perspective the ramp according to the invention in the deployed position.
  • the fixed ramp 1 provided with its diffusers 2 and the mobile ramps 3, laterally spaced also provided with their diffusers 2 and specific diffusers 2E located at the lateral ends.
  • These carriages 14 have grooved rollers 6 which enclose the rail so as to trap said carriage 14 on the rail 5.
  • the fixed ramp 1 has at each of its ends a tubular structure 15 serving to support the rail 5 on the one hand , and, on the other hand, to the support of the means allowing the transverse movement of the mobile ramps 3.
  • These tubular structures 15 are hollow and allow the passage of the feed bitumen of the fixed ramp 1; they receive, at their upper part, the ends of the hoses 11 and 11 ′.
  • the means allowing the transverse movement of the mobile ramps 3 consist of a geared motor 16 comprising a pinion 17 which cooperates with a rack 18 fixed on a frame 19 mounted on each mobile ramp 3.
  • This frame 19 is fixed at the end the mobile ramp; it extends above the diffusers 2 and its other end is secured, for example, to the carriage 14, towards the central part of said mobile ramps.
  • the device for driving the movable ramps 3 is slaved to the pitch of the diffusers 2 so as to always permanently maintain the same interval between the diffusers in action, whatever the spreading width used.
  • the end diffusers 2E are always used. These diffusers 2E are used in addition to the fixed spreading boom 1, when the spreading width corresponds to the width of the boom according to the invention, not deployed.
  • the mobile ramps 3 When it is desired to spread over a width greater than the width of the fixed ramp 1, the mobile ramps 3 are moved and the diffusers 2 of said mobile ramps are selected in addition to the diffusers 2 of the fixed ramp.
  • These diffusers 2 or 2E are conventional diffusers with pneumatic control for example.
  • Figure 4 in thin broken lines, the supply and return hoses of the mobile ramps and the fixed ramp.
  • the bitumen arrives via the hose 8 to penetrate by means of the rotary connector 9 into the mobile ramp 3 located on the left in the drawing.
  • the bitumen comes out, thanks to the pipe 10, through the rotary connector 12 and, by means of the flexible 11 connected to the structure 15, the fixed ramp 1 is re-fed. From this fixed ramp 1, the bitumen returns to the other mobile ramp. 3 and comes out through the hose 8 'to return to the bitumen tank of the spreading vehicle, not shown.
  • Figure 5 the left side of the ramp showing other means of bitumen supply.
  • the flexible hoses are replaced by rigid pipes and rotating joints, providing greater security in the face of the risk of bursting.
  • a first pipe 18 is interposed between the storage tank, not shown, and the movable ramp 3, at its end located towards the center.
  • a second pipe 111 is interposed between the mobile ramp 3 and the fixed ramp 1 and in particular, the structure 15 secured to the end of this fixed ramp 1.
  • the pipework 18 consists of two tubes 19 and 20 connected by a rotary joint 21. There is, respectively, at the other end of the tube 19, a rotary joint 22 and, for the tube 20 a rotary joint 23.
  • the three joints turning 21, 22, 23, are centered on axes which are parallel to each other, and in the direction of advancement of the spreading vehicle, that is to say perpendicular to the fixed and mobile ramps 3.
  • the rotary joint 22 is integral, by means of a flange 24, the storage tank not shown.
  • the seal 23 is secured, by means of a flange 25 for example, to the mobile ramp 3, at the central end of this ramp 3, as shown in Figure 2.
  • the rotary joint 23 corresponds to the rotary joint 9 of the flexible 8 of the previous embodiment.
  • the piping 111 comprises two tubes 26 and 27 articulated at one of their ends on a rotary joint 28.
  • the other end of the tube 26 is articulated by means of a rotary joint 29 at the end of the structure 15 fixed to the end of the fixed ramp 1.
  • this vertical structure 15 hollow, supports the guide rail 5 of the mobile ramps 3.
  • the other end of the tube 27 is connected to the mobile ramp 3 and in particular to its pipe 10, by means of a rotary connector 30 which is connected to said pipe 10 via a flange 31.
  • the rotary joints 28, 29 and 30 are centered on axes which are mutually parallel and parallel to the direction of advance of the spreading vehicle.
  • the rotary joint 29 is fixed relative to the spreading vehicle.
  • the rotary joints 23 and 30 are integral with the mobile ramp and move like it.
  • the rotary joints 21 and 28 move in space as a function of the movement of the mobile ramps 3.
  • the pipes 18 and 111 are found in the same way on the right side of the ramp, viewed from the rear.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Abstract

Spray bar for bitumen, comprising a fixed bar (1) on the carrier vehicle, and two bars (3) which are movable parallel to the said fixed bar (1), on each side, laterally; the said bars extend over approximately half the length of the fixed bar (1). It comprises means for translational displacement of the movable bars (3) relative to the fixed bar (1), slaved in step with diffusers (2), consisting of a gear motor (16) and of a pinion (17)/rack (18) system. Each movable bar (3) comprises, at its lateral end, a diffuser (2E) whose jet is different from that of the other diffusers arranged on the said movable bars (3) and the fixed bar (1). <IMAGE>

Description

La présente invention concerne les rampes de répandage de bitume installées généralement à l'arrière de véhicules spécialement aménagés pour les travaux routiers.The present invention relates to bitumen spreading ramps generally installed at the rear of vehicles specially fitted out for road works.

L'invention a plus particulièrement pour objet les rampes à bitume comportant des moyens qui permettent d'accroître, latéralement, la largeur de répandage du bitume.A more particular subject of the invention is the bitumen ramps comprising means which make it possible to increase, laterally, the width of spreading of the bitumen.

En effet, les véhicules utilisés pour le répandage ont une largeur normalement limitée à la largeur du gabarit routier. Lorsque ces véhicules sont opérationnels, sur le chantier, il est intéressant de pouvoir disposer d'une largeur supérieure à la largeur normale du gabarit routier.Indeed, the vehicles used for the spreading have a width normally limited to the width of the road gauge. When these vehicles are operational, on site, it is advantageous to be able to have a width greater than the normal width of the road gauge.

Une telle possibilité est décrite par exemple dans le document DE-U-8 631 626, au moyen de rampes comportant une partie centrale fixe et, supportées par cette dernière, deux extensions latérales coulissantes.Such a possibility is described for example in document DE-U-8 631 626, by means of ramps comprising a fixed central part and, supported by the latter, two sliding lateral extensions.

L'invention propose une rampe perfectionnée qui répond aux besoins spécifiques des utilisateurs. Elle permet notamment la réalisation d'une couche uniforme de bitume, lorsque la largeur de travail est importante du fait de l'utilisation des possibilités d'extensions latérales.The invention provides an improved ramp which meets the specific needs of users. It allows in particular the production of a uniform layer of bitumen, when the working width is large due to the use of the possibilities of lateral extensions.

La rampe de répandage de bitume selon l'invention, comporte une série de diffuseurs régulièrement espacés sur toute sa largeur ; elle est constituée d'une rampe fixe à l'arrière du véhicule porteur et de deux rampes mobiles, parallèlement à ladite rampe fixe, de part et d'autre latéralerment.The bitumen spreading ramp according to the invention comprises a series of diffusers regularly spaced over its entire width; it consists of a fixed ramp at the rear of the carrier vehicle and two mobile ramps, parallel to said fixed ramp, on either side laterally.

Selon l'invention la rampe fixe comporte des diffuseurs identiques sur toute sa largeur ; les rampes mobiles comportent des diffuseurs identiques à ceux de la rampe fixe sauf aux extrémités latérales où les diffuseurs sont différents pour compenser l'absence de recouvrement du ou des derniers jets ; lesquels diffuseurs se situent, latéralement, au-delà des diffuseurs d'extrémité de la rampe fixe. Les diffuseurs ordinaires des deux rampes mobiles correspondent aux diffuseurs de la rampe fixe c'est-à-dire qu'ils sont dans un même alignement en position repos, et ne fonctionnent que pour compléter les diffuseurs de ladite rampe fixe.According to the invention, the fixed ramp comprises identical diffusers over its entire width; the mobile ramps include diffusers identical to those of the fixed ramp except at the lateral ends where the diffusers are different to compensate for the absence of overlap of the last jet (s); which diffusers are located, laterally, beyond the end diffusers of the fixed ramp. The ordinary diffusers of the two movable ramps correspond to the diffusers of the fixed ramp, that is to say that they are in the same alignment in the rest position, and only function to complement the diffusers of said diffuser. fixed ramp.

Selon l'invention, les diffuseurs disposés aux extrémités latérales des rampes mobiles, ont le même débit que les diffuseurs ordinaires du reste de la rampe mais ils ont un jet de forme différente pour réaliser, en bordure de la couche, une épaisseur de bitume équivalent à celle du reste de ladite couche obtenue par le recouvrement triple épaisseur desdits diffuseurs ordinaires.According to the invention, the diffusers arranged at the lateral ends of the mobile ramps have the same flow rate as the ordinary diffusers of the rest of the ramp, but they have a jet of different shape to achieve, at the edge of the layer, an equivalent bitumen thickness. to that of the rest of said layer obtained by the triple thickness covering of said ordinary diffusers.

Toujours selon l'invention, les rampes mobiles sont mises en oeuvre par des moyens de translation asservis au pas des diffuseurs ; ces moyens sont constitués de vérins de manoeuvre ou d'un moto-réducteur avec système pignon-crémaillère.Still according to the invention, the mobile ramps are implemented by translation means controlled by the pitch of the diffusers; these means consist of actuating cylinders or a gear motor with rack and pinion system.

Selon une autre disposition de l'invention, la rampe de répandage comporte une rampe fixe s'étendant sur toute la largeur normale du véhicule à l'intérieur du gabarit et deux demi-rampes mobiles supportées par la rampe fixe soit au moyen de galets résistants à haute température, disposés à chaque extrémité de la rampe fixe et de galets roulant sur un rail de guidage fixé lui aussi sur la rampe fixe, soit au moyen de glissières télescopiques.According to another arrangement of the invention, the spreading ramp comprises a fixed ramp extending over the entire normal width of the vehicle inside the template and two movable half-ramps supported by the fixed ramp either by means of resistant rollers at high temperature, arranged at each end of the fixed ramp and rollers rolling on a guide rail also fixed on the fixed ramp, either by means of telescopic slides.

Toujours selon l'invention, l'alimentation en bitume s'effectue au moyen de flexibles à raccord tournant sur chacune des rampes mobiles ; chaque extrémité des rampes mobiles est réliée par flexible avec raccord tournant à l'extrémité correspondante de la rampe fixe.Still according to the invention, the supply of bitumen is carried out by means of hoses with rotating connection on each of the mobile ramps; each end of the mobile ramps is connected by flexible hose with a rotating connection to the corresponding end of the fixed ramp.

Selon une disposition préférentielle de l'invention, l'alimentation en bitume des différentes parties de la rampe s'effectue au moyen de tubulures munies de joints tournants ; cette alimentation par des tubes rigides présente l'avantage de procurer une plus grande sécurité face aux risques d'éclatement des flexibles habituellement utilisés.According to a preferred arrangement of the invention, the bitumen supply to the different parts of the ramp is carried out by means of pipes fitted with rotary joints; this supply by rigid tubes has the advantage of providing greater security against the risks of bursting of the hoses usually used.

Toujours selon l'invention, les rampes mobiles et/ou les rampes fixes comportent un dispositif réchauffeur.Still according to the invention, the mobile ramps and / or the fixed ramps include a heating device.

L'invention sera encore illustrée à l'aide de la description suivante et des dessins annexés, donnés à titre indicatif, et dans lesquels :

  • - la figure 1 est une vue de dessus très schématique d'une rampe fixe classique installée à l'arrière d'un véhicule de répandage ;
  • - la figure 2 est une vue très schématique de la rampe de répandage selon l'invention ;
  • - la figure 3 représente un détail de la rampe selon l'invention en coupe selon 3-3 ;
  • - la figure 4 est une vue simplifiée en perspective de la rampe selon l'invention en position déployée.
  • - la figure 5 est une vue arrière en élévation, du côté gauche de la rampe ;
  • - la figure 6 est une vue latérale montrant la tuyauterie disposée entre la pompe d'alimentation et la rampe mobile ;
  • - la figure 7 est une vue latérale montrant la tuyauterie disposée entre la rampe mobile et la rampe fixe.
The invention will be further illustrated with the aid of the following description and the appended drawings, given for information only, and in which:
  • - Figure 1 is a very schematic top view of a conventional fixed ramp installed at the rear of a spreading vehicle;
  • - Figure 2 is a very schematic view of the spreading ramp according to the invention;
  • - Figure 3 shows a detail of the ramp according to the invention in section on 3-3;
  • - Figure 4 is a simplified perspective view of the ramp according to the invention in the deployed position.
  • - Figure 5 is a rear elevation view, on the left side of the ramp;
  • - Figure 6 is a side view showing the piping disposed between the feed pump and the movable ramp;
  • - Figure 7 is a side view showing the piping disposed between the movable ramp and the fixed ramp.

Tel que représenté figure 1, la rampe 1 de répandage comporte une pluralité de diffuseurs 2 réguliè­rement espacés sur tout la largeur de la rampe. Cette rampe 1 est normalement fixée à l'arrière d'un véhicule de répandage non représenté, qui avance selon la flèche.As shown in Figure 1, the spreading ramp 1 comprises a plurality of diffusers 2 regularly spaced over the entire width of the ramp. This ramp 1 is normally fixed to the rear of a not shown spreading vehicle, which advances along the arrow.

Ce type de rampe comporte, habituellement, à chacune des ses extrémités des diffuseurs dont le jet est différent pour pallier l'absence de recouvrement. En effet, ces rampes assurent un répandage du liant dont l'épaisseur, sur la chaussée, résulte en général de l'écoulement de trois jets. Les trois recouvrements sont nécessaires pour réaliser une bonne répartition transversale du bitume. On obtient également une bonne répartition aux extrémités grâce à l'emploi de diffuseurs dont les jets ont une forme différente de celle des autres jets de la rampe. Généralement, on n'a juste que les deux diffuseurs 2E disposés à chacune des extrémités de la rampe 1.This type of ramp usually comprises at each of its ends diffusers, the jet of which is different to compensate for the absence of overlap. In fact, these ramps spread the binder, the thickness of which on the road generally results from the flow of three jets. The three coverings are necessary to achieve a good transverse distribution of the bitumen. A good distribution is also obtained at the ends thanks to the use of diffusers whose jets have a shape different from that of the other jets of the boom. Generally, we just have only the two diffusers 2E arranged at each end of the ramp 1.

On a représenté figure 2 la rampe de répandage selon l'invention qui est en fait une rampe télescopique, constituée d'une rampe fixe 1 et de deux rampes mobiles 3, parfaitement symétriques, par rapport au plan médian perpendiculaire à ladite rampe 1. La rampe 1 comporte, de façon classique des diffuseurs 2 ayant tous le même jet. Les diffuseurs 2E à jet différent ont été enlevés de la rampe fixe pour être reportés, dans la même position, à chacune des extrémités des rampes mobiles 3. Les autres diffuseurs des rampes mobiles sont identiques aux diffuseurs 2 de la rampe fixe 1.FIG. 2 shows the spreading ramp according to the invention which is in fact a telescopic ramp, consisting of a fixed ramp 1 and two mobile ramps 3, perfectly symmetrical, with respect to the median plane perpendicular to said ramp 1. The ramp 1 comprises, in a conventional manner diffusers 2 all having the same jet. The 2E diffusers with different jets have been removed from the fixed ramp to be transferred, in the same position, to each end of the mobile ramps 3. The other diffusers of the mobile ramps are identical to the diffusers 2 of the fixed ramp 1.

Les diffuseurs 2E ont un jet dont la largeur au sol est réduite d'un tiers par rapport aux autres jets des diffuseurs ordinaires 2. Le jet du diffuseur 2E a une épaisseur identique à celle des autres jets sur une moitié de sa largeur et une épaisseur double sur l'autre moitié qui arrose et forme la bordure externe de la nappe de bitume.The 2E diffusers have a jet whose width on the ground is reduced by a third compared to the other jets of ordinary diffusers 2. The jet of the 2E diffuser has a thickness identical to that of the other jets over half its width and a thickness double on the other half which sprinkles and forms the outer border of the bitumen layer.

La rampe fixe 1 est portée, par le véhicule de répandage, non représenté. Cette rampe fixe 1 supporte les deux rampes mobiles 3, lesquelles sont disposées à l'arrière de la rampe fixe 1 et s'étendent, sensiblement, chacune sur la moitié de la largeur de ladite rampe fixe 1. Ces rampes mobiles 3 sont supportées par un galet 4 disposé à chaque extrémité de la rampe fixe 1, et au moyen d'un rail 5 supporté par ladite rampe 1, par des galets 6 situés à l'extrémité centrale des rampes mobiles 3 et solidaires de ces dernières ; ces différents moyens assurent le guidage desdites rampes mobiles 3 en translation, parallèlement à la rampe fixe 1, de part et d'autre de cette dernière, latéralement. On peut également prévoir de guider les rampes mobiles au moyen de glissières télescopiques.The fixed ramp 1 is carried by the spreading vehicle, not shown. This fixed ramp 1 supports the two mobile ramps 3, which are arranged at the rear of the fixed ramp 1 and extend, substantially, each over half the width of said fixed ramp 1. These mobile ramps 3 are supported by a roller 4 disposed at each end of the fixed ramp 1, and by means of a rail 5 supported by said ramp 1, by rollers 6 located at the central end of the mobile ramps 3 and integral with the latter; these different means guide said mobile ramps 3 in translation, parallel to the fixed ramp 1, on either side of the latter, laterally. It is also possible to provide guidance for the mobile ramps by means of telescopic slides.

On a représenté figure 3, une coupe schématique de la rampe selon l'invention montrant la rampe fixe 1, et ses diffuseurs 2 ; la rampe mobile 3 est supportée et guidée par le galet 4 solidaire de la rampe fixe 1, au moyen d'un chemin de roulement 5 qui s'étend sur toute la longueur de ladite rampe mobile 3, à la partie supérieure de cette dernière. Ce chemin de roulement 7 comporte une partie plane qui roule sur ledit galet et un rebord vertical de guidage latéral. Le galet 4 est à axe horizontal, perpendiculaire à la rampe 1 ; il est positionné entre ladite rampe 1 et le rebord vertical du chemin 7.There is shown in Figure 3, a schematic section of the ramp according to the invention showing the fixed ramp 1, and its diffusers 2; the mobile ramp 3 is supported and guided by the roller 4 secured to the fixed ramp 1, by means of a raceway 5 which extends over the entire length of said mobile ramp 3, at the top of the latter. This raceway 7 has a flat part which rolls on said roller and a vertical edge for lateral guidance. The roller 4 has a horizontal axis, perpendicular to the ramp 1; it is positioned between said ramp 1 and the vertical edge of path 7.

On remarque encore figure 2, les moyens d'alimen­tation de la rampe selon l'invention ; ces moyens permettent un cheminement du bitume dans toute la rampe, en provenance d'une pompe de gavage située en sortie de cuve, non représentée, et un retour contrôlé du bitume vers ladite cuve de stockage. L'arrivée du bitume s'effectue par exemple au moyen d'un flexible 8 connecté par un raccord tournant 9 à l'extrémité centrale d'une des rampes mobiles 3 ; le bitume circule dans ladite rampe mobile 3 pour sortir à son extrémité, au niveau du diffuseur 2E et repart par une conduite 10, parallèle à la rampe mobile en question 3, qui peut être réchauffée par tout moyen classique, cette conduite recentre le départ du flexible 11 d'alimentation de la rampe fixe 1, au moyen là aussi d'un raccord tournant 12 ; ledit flexible 11 arrive au niveau de l'extrémité correspondante de la rampe fixe 1 de façon à faire circuler le bitume dans ladite rampe 1 avant de le réexpédier par un flexible équivalent 11′, dans l'autre rampe 3 à l'extrémité centrale de laquelle le bitume retourne par la conduite 8′ vers la cuve de stockage du véhicule non représenté.Note also in Figure 2, the ramp supply means according to the invention; these means allow a routing of the bitumen throughout the ramp, coming from a booster pump located at the outlet of the tank, not shown, and a controlled return of the bitumen to said storage tank. The arrival of the bitumen is carried out, for example, by means of a hose 8 connected by a rotary connector 9 to the central end of one of the mobile ramps 3; the bitumen circulates in said mobile ramp 3 to exit at its end, at the level of the diffuser 2E and departs via a pipe 10, parallel to the mobile ramp in question 3, which can be heated by any conventional means, this pipe refocuses the start of the flexible 11 for supplying the fixed ramp 1, again by means of a rotary connector 12; said flexible 11 arrives at the corresponding end of the fixed ramp 1 so as to circulate the bitumen in said ramp 1 before returning it by an equivalent flexible 11 ′, in the other ramp 3 at the central end of which the bitumen returns via line 8 'to the storage tank of the vehicle not shown.

On remarque encore, figure 2, que les deux rampes mobiles 3 comportent chacune une conduite 10 qui permet le raccordement des flexibles 11 et 11′ interposés entre lesdites rampes mobiles et la rampe fixe. Les blocs de réchauffage 13 sont interposés entre ces conduites 10 et les rampes mobiles 3, ils s'étendent de préférence, sur une longueur qui permet de réchauffer à la fois le bitume qui circule dans lesdites conduites 10 et celui qui circule dans lesdites rampes mobiles, maintenant une bonne fluidité du bitume autour des diffuseurs 2, 2E. On peut également utiliser des réchauffeurs intégrés directement dans les rampes aussi bien les rampes fixes que les rampes mobiles.Note also, Figure 2, that the two movable ramps 3 each have a pipe 10 which allows the connection of the flexible 11 and 11 'interposed between said movable ramps and the fixed ramp. The heating blocks 13 are interposed between these pipes 10 and the mobile ramps 3, they preferably extend over a length which makes it possible to heat both the bitumen which circulates in said pipes 10 and that which circulates in said mobile ramps , maintaining good fluidity of the bitumen around the diffusers 2, 2E. It is also possible to use heaters integrated directly into the ramps, both fixed and mobile ramps.

On a fait apparaître, figure 4, en perspective, la rampe selon l'invention en position déployée. On remarque sur cette figure, la rampe fixe 1 munie de ses diffuseurs 2 et les rampes mobiles 3, écartées latéralement munies elles aussi de leurs diffuseurs 2 et des diffuseurs particuliers 2E situés aux extrémités latérales. On remarque encore sur cette figure 4, le rail 5 de guidage des chariots 14 soli­daires de l'extrémité centrale des rampes mobiles 3. Ces chariots 14 comportent des galets 6 à gorge, qui enserrent le rail de façon à emprisonner ledit chariot 14 sur le rail 5. La rampe fixe 1 comporte à chacune de ses extrémités, une structure tubulaire 15 servant au support du rail 5 d'une part, et, d'autre part, au support des moyens permettant le déplacement transversal des rampes mobiles 3. Ces structures tubulaires 15 sont creuses et permettent le passage du bitume d'alimentation de la rampe fixe 1 ; elles reçoivent, à leur partie supérieure, les extrémités des flexibles 11 et 11′.FIG. 4 shows in perspective the ramp according to the invention in the deployed position. Note in this figure, the fixed ramp 1 provided with its diffusers 2 and the mobile ramps 3, laterally spaced also provided with their diffusers 2 and specific diffusers 2E located at the lateral ends. Note also in this figure 4, the rail 5 for guiding the carriages 14 secured to the central end of the mobile ramps 3. These carriages 14 have grooved rollers 6 which enclose the rail so as to trap said carriage 14 on the rail 5. The fixed ramp 1 has at each of its ends a tubular structure 15 serving to support the rail 5 on the one hand , and, on the other hand, to the support of the means allowing the transverse movement of the mobile ramps 3. These tubular structures 15 are hollow and allow the passage of the feed bitumen of the fixed ramp 1; they receive, at their upper part, the ends of the hoses 11 and 11 ′.

Les moyens permettant le mouvement transversal des rampes mobiles 3 sont constitués d'un moto-réducteur 16 comportant un pignon 17 qui coopère avec une crémaillère 18 fixée sur un cadre 19 monté sur chaque rampe mobile 3. Ce cadre 19 est fixé à l'extrémité de la rampe mobile ; il s'étent au-dessus des diffuseurs 2 et son autre extrémité est solidaire, par exemple, du chariot 14, vers la partie centrale desdites rampes mobiles. Le dispositif d'entraî­nement des rampes mobiles 3 est asservi au pas des diffuseurs 2 de façon à conserver en permanence toujours le même intervalle entre les diffuseurs en action, quelle que soit la largeur de répandage utilisée. On peut également prévoir d'utiliser des vérins pour manoeuvrer les rampes mobiles. Dans ce cas chaque vérin peut être interposé entre une structure 15 par exemple et une rampe mobile.The means allowing the transverse movement of the mobile ramps 3 consist of a geared motor 16 comprising a pinion 17 which cooperates with a rack 18 fixed on a frame 19 mounted on each mobile ramp 3. This frame 19 is fixed at the end the mobile ramp; it extends above the diffusers 2 and its other end is secured, for example, to the carriage 14, towards the central part of said mobile ramps. The device for driving the movable ramps 3 is slaved to the pitch of the diffusers 2 so as to always permanently maintain the same interval between the diffusers in action, whatever the spreading width used. One can also plan to use jacks to maneuver the mobile ramps. In this case each cylinder can be interposed between a structure 15 for example and a movable ramp.

Pour le répandage dont la largeur est égale ou supérieure à la largeur de la rampe fixe, on utilise toujours les diffuseurs d'extrémité 2E. Ces diffuseurs 2E sont utilisés en complément de la rampe d'épandage fixe 1, lorsque la largeur de répandage correspond à la largeur de la rampe selon l'invention, non déployée.For spreading whose width is equal to or greater than the width of the fixed ramp, the end diffusers 2E are always used. These diffusers 2E are used in addition to the fixed spreading boom 1, when the spreading width corresponds to the width of the boom according to the invention, not deployed.

Lorsque l'on veut répandre sur une largeur supérieure à la largeur de la rampe fixe 1, on déplace les rampes mobiles 3 et on sélectionne les diffuseurs 2 desdites rampes mobiles en complément des diffuseurs 2 de la rampe fixe.When it is desired to spread over a width greater than the width of the fixed ramp 1, the mobile ramps 3 are moved and the diffusers 2 of said mobile ramps are selected in addition to the diffusers 2 of the fixed ramp.

Ces diffuseurs 2 ou 2E sont des diffuseurs classiques à commande pneumatique par exemple.These diffusers 2 or 2E are conventional diffusers with pneumatic control for example.

On a fait apparaître également, figure 4, en traits mixtes fins, les flexibles d'alimentation et de retour des rampes mobiles et de la rampe fixe. Ainsi par exemple, le bitume arrive par le flexible 8 pour pénétrer au moyen du raccord tournant 9 dans la rampe mobile 3 située à gauche sur le dessin. Le bitume ressort, grâce à la conduite 10, par le raccord tournant 12 et, au moyen du flexible 11 branché sur la structure 15, on réalimente la rampe fixe 1. De cette rampe fixe 1, le bitume retourne dans l'autre rampe mobile 3 et ressort par le flexible 8′ pour retourner à la cuve à bitume du véhicule de répandage, non représenté.Also shown, Figure 4, in thin broken lines, the supply and return hoses of the mobile ramps and the fixed ramp. Thus, for example, the bitumen arrives via the hose 8 to penetrate by means of the rotary connector 9 into the mobile ramp 3 located on the left in the drawing. The bitumen comes out, thanks to the pipe 10, through the rotary connector 12 and, by means of the flexible 11 connected to the structure 15, the fixed ramp 1 is re-fed. From this fixed ramp 1, the bitumen returns to the other mobile ramp. 3 and comes out through the hose 8 'to return to the bitumen tank of the spreading vehicle, not shown.

On a représenté, figure 5, la partie gauche de la rampe montrant d'autres moyens d'alimentation en bitume. Les flexibles sont remplacés par des tuyauteries rigides et des joints tournants, procurant une plus grande sécurité, face aux risques d'éclatement.There is shown, Figure 5, the left side of the ramp showing other means of bitumen supply. The flexible hoses are replaced by rigid pipes and rotating joints, providing greater security in the face of the risk of bursting.

Une première tuyauterie 18 est interposée entre la cuve de stockage, non représentée, et la rampe mobile 3, à son extrémité située vers le centre. Une seconde tuyauterie 111 est interposée entre la rampe mobile 3 et la rampe fixe 1 et en particulier, la structure 15 solidaire de l'extrémité de cette rampe fixe 1.A first pipe 18 is interposed between the storage tank, not shown, and the movable ramp 3, at its end located towards the center. A second pipe 111 is interposed between the mobile ramp 3 and the fixed ramp 1 and in particular, the structure 15 secured to the end of this fixed ramp 1.

La tuyauterie 18 est constituée de deux tubes 19 et 20 raccordés par un joint tournant 21. On trouve, respectivement, à l'autre extrémité du tube 19, un joint tournant 22 et, pour le tube 20 un joint tournant 23. Les trois joints tournants 21, 22, 23, sont centrés sur des axes parallèles entre eux, et au sens d'avancement du véhicule de répandage, c'est-à-dire perpendiculaires aux rampes fixes 1 et mobiles 3. Le joint tournant 22 est solidaire, au moyen d'une bride 24, de la cuve de stockage non représentée. Le joint 23 est solidaire, au moyen d'une bride 25 par exemple, de la rampe mobile 3, au niveau de l'extrémité centrale de cette rampe 3, comme représenté figure 2. Le joint tournant 23 correspond au joint tournant 9 du flexible 8 du mode de réalisation précédent.The pipework 18 consists of two tubes 19 and 20 connected by a rotary joint 21. There is, respectively, at the other end of the tube 19, a rotary joint 22 and, for the tube 20 a rotary joint 23. The three joints turning 21, 22, 23, are centered on axes which are parallel to each other, and in the direction of advancement of the spreading vehicle, that is to say perpendicular to the fixed and mobile ramps 3. The rotary joint 22 is integral, by means of a flange 24, the storage tank not shown. The seal 23 is secured, by means of a flange 25 for example, to the mobile ramp 3, at the central end of this ramp 3, as shown in Figure 2. The rotary joint 23 corresponds to the rotary joint 9 of the flexible 8 of the previous embodiment.

En regard des figures 5 et 7, la tuyauterie 111 comporte deux tubes 26 et 27 articulés à l'une de leurs extrémités sur un joint tournant 28. L'autre extrémité du tube 26 est articulée au moyen d'un joint tournant 29 à l'extrémité de la structure 15 fixée à l'extrémité de la rampe fixe 1. On remarque, sur cette figure 7, que cette structure verticale 15, creuse, supporte le rail de guidage 5 des rampes mobiles 3. L'autre extrémité du tube 27 est reliée à la rampe mobile 3 et en particulier à sa conduite 10, au moyen d'un raccord tournant 30 qui est relié à ladite conduite 10 par l'intermédiaire d'une bride 31.With reference to FIGS. 5 and 7, the piping 111 comprises two tubes 26 and 27 articulated at one of their ends on a rotary joint 28. The other end of the tube 26 is articulated by means of a rotary joint 29 at the end of the structure 15 fixed to the end of the fixed ramp 1. It is noted, in this figure 7 , that this vertical structure 15, hollow, supports the guide rail 5 of the mobile ramps 3. The other end of the tube 27 is connected to the mobile ramp 3 and in particular to its pipe 10, by means of a rotary connector 30 which is connected to said pipe 10 via a flange 31.

Comme précédemment, les joints tournants 28, 29 et 30 sont centrés sur des axes parallèles entre eux et parallèles au sens d'avancement du véhicule de répandage.As before, the rotary joints 28, 29 and 30 are centered on axes which are mutually parallel and parallel to the direction of advance of the spreading vehicle.

Comme le joint tournant 22, le joint tournant 29 est fixe par rapport au véhicule de répandage. Les joints tournants 23 et 30 sont solidaires de la rampe mobile et se déplacent comme elle. Les joints tournants 21 et 28 se déplacent dans l'espace en fonction du mouvement des rampes mobiles 3. Les tuyauteries 18 et 111 se retrouvent de la même façon sur le côté droit de la rampe, vue de l'arrière.Like the rotary joint 22, the rotary joint 29 is fixed relative to the spreading vehicle. The rotary joints 23 and 30 are integral with the mobile ramp and move like it. The rotary joints 21 and 28 move in space as a function of the movement of the mobile ramps 3. The pipes 18 and 111 are found in the same way on the right side of the ramp, viewed from the rear.

Les signes de référence insérés après les carac­téristiques techniques mentionnées dans les revendications ont pour seul but de faciliter la compréhension de ces dernières, et n'en limitent aucunement la portée.The reference signs inserted after the technical characteristics mentioned in the claims are intended only to facilitate the understanding of the latter, and in no way limit their scope.

Claims (9)

1.- Rampe de répandage de bitume constituée d'une rampe (1) fixée sur le véhicule porteur, et deux rampes (3) mobiles parallèlement à ladite rampe fixe (1), de part et d'autre, latéralement, caractérisée en ce qu'elle comporte, sur la rampe fixe, des diffuseurs (2) identiques sur toute la largeur et, sur les rampes mobiles (3) des diffuseurs (2) identiques à ceux de ladite rampe fixe (1), sauf aux extrémités latérales où elles comportent des diffuseurs (2E) différents pour compenser l'absence de recouvrement du ou des derniers jets de bitume, lesquels diffuseurs (2E) se situent latéralement, au-delà des diffuseurs d'extrémités de la rampe fixe (1).1.- Bitumen spreading ramp consisting of a ramp (1) fixed on the carrier vehicle, and two ramps (3) movable parallel to said fixed ramp (1), on either side, laterally, characterized in that that it comprises, on the fixed ramp, diffusers (2) identical over the entire width and, on the mobile ramps (3) diffusers (2) identical to those of said fixed ramp (1), except at the lateral ends where they include different diffusers (2E) to compensate for the lack of covering of the last bitumen jet (s), which diffusers (2E) are located laterally, beyond the end diffusers of the fixed ramp (1). 2.- Rampe de répandage de bitume selon la revendication 1, caractérisée en ce qu'elle comporte des moyens de déplacement en translation des rampes mobiles (3) par rapport à la rampe fixe (1), asservis au pas des diffuseurs (2), constitués d'un moto-réducteur (16) et d'un système pignon-crémaillère.2.- bitumen spreading ramp according to claim 1, characterized in that it comprises means for translational movement of the mobile ramps (3) relative to the fixed ramp (1), controlled by the pitch of the diffusers (2) , consisting of a gear motor (16) and a rack and pinion system. 3.- Rampe de répandage de bitume selon la revendication 1, caractérisée en ce qu'elle comporte des moyens de déplacement en translation des rampes mobiles (3), par rapport à la rampe fixe (1), asservis au pas des diffuseurs (2), constitués de vérins.3.- bitumen spreading ramp according to claim 1, characterized in that it comprises means for translational movement of the mobile ramps (3), relative to the fixed ramp (1), controlled by the pitch of the diffusers (2 ), consisting of cylinders. 4.- Rampe de répandage de bitume selon l'une quelconque des revendications 1 à 3, caractérisée en ce qu'elle comporte deux rampes mobiles (3) s'étendant chacune sur environ la moitié de la longueur de la rampe fixe (1) ; lesdites rampes mobiles (3) étant supportées par la rampe fixe (1).4.- bitumen spreading ramp according to any one of claims 1 to 3, characterized in that it comprises two mobile ramps (3) each extending over approximately half the length of the fixed ramp (1) ; said mobile ramps (3) being supported by the fixed ramp (1). 5.- Rampe de répandage de bitume selon la revendication 4, caractérisée en ce qu'elle comporte, à chaque extrémité de la rampe fixe (1), des galets (4) supportant les rampes mobiles (3) et un rail de guidage (5), solidaire de la rampe fixe (1), sur laquelle se déplacent des galets (6) solidaires de l'extrémité centrale de chaque rampe mobile (3).5.- bitumen spreading ramp according to claim 4, characterized in that it comprises, at each end of the fixed ramp (1), rollers (4) supporting the mobile ramps (3) and a guide rail ( 5), integral with the fixed ramp (1), on which rollers (6) move integral with the central end of each movable ramp (3). 6.- Rampe de répandage de bitume selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comporte des moyens de réchauffage inclus dans les rampes fixes et/ou mobiles..6.- Bitumen spreading ramp according to one any one of claims 1 to 5, characterized in that it comprises heating means included in the fixed and / or mobile ramps. 7.- Rampe de répandage de bitume selon l'une quelconque des revendications 5 ou 6, caractérisée en ce qu'elle comporte, à chaque extrémité de la rampe fixe (1) une structure tubulaire (15) verticale reliée par des moyens appropriés aux rampes mobiles (3) correspondantes pour la circulation du bitume.7.- bitumen spreading ramp according to any one of claims 5 or 6, characterized in that it comprises, at each end of the fixed ramp (1) a tubular structure (15) vertical connected by means suitable for corresponding mobile ramps (3) for the circulation of bitumen. 8.- Rampe de répandage de bitume selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'elle comporte deux flexibles (8 et 8′) reliés aux extrémités centrales respectives des rampes mobiles (3) et deux flexibles (11, 11′) interposés entre les extrémités correspondantes desdites rampes mobiles (3) et la rampe fixe (1), sur la structure tubulaire (15) de cette dernière.8.- bitumen spreading ramp according to any one of claims 1 to 7, characterized in that it comprises two hoses (8 and 8 ′) connected to the respective central ends of the mobile ramps (3) and two hoses (11 , 11 ′) interposed between the corresponding ends of said mobile ramps (3) and the fixed ramp (1), on the tubular structure (15) of the latter. 9.- Rampe de répandage de bitume selon l'une quelconque des revendications 1 à 7, caractérisée en ce qu'elle comporte des tubulures (18 et 111), à joint tournant, interposées respectivement, d'une part, entre la cuve de stockage et chaque rampe mobile (3) au niveau de son extrémité centrale et, d'autre part, entre l'autre extrémité de ladite rampe mobile, et la rampe fixe (1).9.- bitumen spreading ramp according to any one of claims 1 to 7, characterized in that it comprises pipes (18 and 111), with rotating joint, interposed respectively, on the one hand, between the tank of storage and each mobile ramp (3) at its central end and, on the other hand, between the other end of said mobile ramp, and the fixed ramp (1).
EP89400149A 1988-01-19 1989-01-18 Spray bars for bitumen Withdrawn EP0325533A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8800744 1988-01-19
FR8800744A FR2626022B1 (en) 1988-01-19 1988-01-19 IMPROVEMENT IN BITUMEN SPREADING RAMPS

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Cited By (4)

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EP0418105A1 (en) * 1989-09-15 1991-03-20 Screg Routes Et Travaux Publics Extensible screed for compacting and finishing roadcovering with liquid binder spreading means
FR2659994A1 (en) * 1990-03-23 1991-09-27 Rincheval Spreading boom (spray pipe) with rotating connectors having double flow for road covering products
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.
US5279500A (en) * 1990-08-08 1994-01-18 Colas S.A. Apparatus for spreading a road surfacing material

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CN102425096B (en) * 2011-08-24 2013-11-27 浙江美通筑路机械股份有限公司 Hydraulically driven telescopic type pitch spraying device

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DE1577825A1 (en) * 1965-03-12 1970-01-29 Lechler Bautzenschutzchemie Kg Spray ramp
DE2323852A1 (en) * 1973-05-11 1974-11-28 Hermann Beck DEVICE FOR OPENING AND CLOSING SPRING-LOADED CLOSED VALVES OF EQUIPMENT FOR SPRAYING ROADS
DE8631626U1 (en) * 1986-11-26 1987-01-15 Robert Breining Maschinen- & Fahrzeugbau GmbH u. Co, 7064 Remshalden Spraying device for spraying liquid binding agents onto road surfaces

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GB1041511A (en) * 1964-03-03 1966-09-07 Johnston Brothers Eng Improvements in or relating to ground spraying apparatus
DE1577825A1 (en) * 1965-03-12 1970-01-29 Lechler Bautzenschutzchemie Kg Spray ramp
DE2323852A1 (en) * 1973-05-11 1974-11-28 Hermann Beck DEVICE FOR OPENING AND CLOSING SPRING-LOADED CLOSED VALVES OF EQUIPMENT FOR SPRAYING ROADS
DE8631626U1 (en) * 1986-11-26 1987-01-15 Robert Breining Maschinen- & Fahrzeugbau GmbH u. Co, 7064 Remshalden Spraying device for spraying liquid binding agents onto road surfaces

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0418105A1 (en) * 1989-09-15 1991-03-20 Screg Routes Et Travaux Publics Extensible screed for compacting and finishing roadcovering with liquid binder spreading means
FR2652098A1 (en) * 1989-09-15 1991-03-22 Screg Routes & Travaux COMPACTION AND FINISHING TABLE FOR A ROAD COVERING WITH ADJUSTABLE WORKING WIDTH INCLUDING MEANS FOR SPREADING LIQUID BINDER.
FR2659994A1 (en) * 1990-03-23 1991-09-27 Rincheval Spreading boom (spray pipe) with rotating connectors having double flow for road covering products
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
US5279500A (en) * 1990-08-08 1994-01-18 Colas S.A. Apparatus for spreading a road surfacing material

Also Published As

Publication number Publication date
FR2626022A1 (en) 1989-07-21
FR2626022B1 (en) 1990-07-06

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