EP1422346B1 - Vorrichtung zum Spritzen von Bindemittel und Streuen von Aggregat am Heck einer Strassenbearbeitungsvorrichtung - Google Patents

Vorrichtung zum Spritzen von Bindemittel und Streuen von Aggregat am Heck einer Strassenbearbeitungsvorrichtung Download PDF

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Publication number
EP1422346B1
EP1422346B1 EP03292876A EP03292876A EP1422346B1 EP 1422346 B1 EP1422346 B1 EP 1422346B1 EP 03292876 A EP03292876 A EP 03292876A EP 03292876 A EP03292876 A EP 03292876A EP 1422346 B1 EP1422346 B1 EP 1422346B1
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EP
European Patent Office
Prior art keywords
nozzles
width
spreading
gravel
transverse direction
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.)
Expired - Lifetime
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EP03292876A
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English (en)
French (fr)
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EP1422346A1 (de
Inventor
Guy Marconnet
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Famaro SA
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Famaro SA
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Priority claimed from FR0214760A external-priority patent/FR2847597A1/fr
Application filed by Famaro SA filed Critical Famaro SA
Publication of EP1422346A1 publication Critical patent/EP1422346A1/de
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    • 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
    • E01C19/12—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 invention relates to a device for spreading liquid binder and gravel at the rear of a road construction machine.
  • a spraying train consisting of a bitumen spreader and a chip grinder is used.
  • the spreader must spread the binder, which is either an emulsion or hot bitumen, on the roadway with very great precision and perfect regularity in the transverse direction of the road surface and spreading train.
  • a multiple jet ramp that is to say a ramp having nozzles distributed in the longitudinal direction of the ramp disposed in the transverse directions of the road surface, with a constant spacing pitch, for example a pitch of about 100 mm.
  • the ramp is fed with liquid binder and the nozzles are made to produce a conical jet having an elongated cross-sectional section similar to a triangular flat jet which meets the road surface, along an impact surface whose length, in the transverse direction, depends on the angle at the top of the flat stream and the height of the ramp above the road surface.
  • a ramp height, above the road surface is chosen according to the angle at the top of the flat jets and the pitch of the nozzles on the ramp, such that the impact surface of each of the jets has a length of about three steps in the transverse direction. Because of the overlap of the jets formed by the successive nozzles, on each step of the impact surface, three jets are superimposed, which gives three overlaps of the road surface.
  • the chippings are generally deposited on the liquid binder covering the road surface, by a chip with a plurality of successive traps of constant width, distributed in the transverse direction of the road surface and controlled for their opening or their closure, so as to adjust the spreading width of chippings on the road surface covered with liquid binder.
  • the multitrapple chip is fixed on the bottom of the bucket of a dump truck in which the chippings are loaded. This gives a good transverse distribution.
  • Road surface maintenance may require the treatment of localized defects, which are generally referred to in the trade as point-in-time work.
  • Such work may involve more or less circular isolated areas or strips of width less than the width of the road surface.
  • a manual method of applying the bitumen with a hand-held lance and spreading the chippings using a gravel trap has been used for a long time. This rudimentary technique is less and less used, and it is preferred to use equipment to perform point-to-point work automatically.
  • the materials used are machines that combine on a single road vehicle a small spreader and a small gravel bucket associated with a gravel.
  • Such machines have made it possible to advance the technique of superficial road maintenance by mechanizing the repair work and the practical and economical nature of such machines, which combine two functions, explains their current success, despite their limited autonomy on the construction site, because the reduced capacity of the gravel bucket and the liquid binder reservoir, such machines being generally constituted by a truck.
  • a more inconvenient disadvantage of this technique is that it leads to superficial coatings of mediocre quality, because it no longer respects the principle used in spreading trains which consists in depositing the bitumen on the road surface with three recoveries.
  • the asphalt spreader is placed at a height above the road surface that is less than the height usually used on spraying trains. Given the angle at the top of the flat jets and the pitch between the nozzles of the ramp, each of the jets forms an impact surface whose dimension in the transverse direction is only two steps and the intersection of the jets does not produces only two overlaps, by superposition of two jets on each step of the impact surface.
  • the width of the gravel spreading hatches with respect to the spacing pitch of the nozzles is such that three streams of binder are applied over the spreading width of a hatch.
  • only two binder streams per spreading width of a gravel trap are used.
  • the use of two overlays of binder instead of three and two binder jets instead of three over a spreading width of a gravel trap leads to surface coatings of inferior quality to those obtained by means of a coating. wide spreading train.
  • the object of the invention is therefore to propose a device for spreading liquid binder and gravel at the rear of a road vehicle comprising at least one binder spreading ramp fixed on a rear part of the road vehicle. in a transverse direction, and having a first set of binder spreading nozzles distributed along the length of the boom in the transverse direction with a constant pitch pitch, directed to a road surface on which the road gear is moving and adjustable means for supplying the ramp with binder, so as to feed all or part of the nozzles of the first set to form at the outlet of each of the nozzles a flat jet having an apex angle such that, depending on the height of the ramps over the road surface, each jet has an impact surface on the road surface of a width of approximately three steps in the transverse direction and that the jets of the first set of nozzles intersect so that for each of the successive steps of the impact surfaces of the jets, in the transverse direction, three jets are superimposed, and a chip sealer fixed to the rear of the road vehicle, in a transverse arrangement
  • the figure 1 is a schematic perspective view of a device according to the invention consisting of a dump truck equipped with a chip and a bitumen ramp.
  • the figure 2 is a rear view of the device showing the arrangement of the trap doors of the chipboard and the bitumen ramp.
  • FIGS. 3 and 4 are schematic views relating to an automatic device for performing point-in-time work according to the prior art.
  • the figure 3 shows the distribution of traps and nozzles of the binder spreading ramp in the transverse direction.
  • the figure 4 shows, vis-à-vis the figure 3 , the formation of bitumen jets and coating in the case of a repair of the road surface carried out by the device according to the prior art.
  • the figure 5 is a bar graph showing the binder distribution along the width of a strip being repaired with an automatic time point device according to the prior art.
  • the figure 6 is a schematic view similar to the view of the figure 3 , in the case of a spreading device according to the invention.
  • the Figure 6A is a bottom view of a nozzle of the second set of nozzles of the device of the figure 6 or from figure 7 .
  • the figure 7 is a view similar to the view of the figure 4 showing the distribution of the jets of liquid binder and gravel, in the case of the device according to the invention.
  • the figure 8 is a histogram showing the distribution of binder along the width of a band which is repaired with the device according to the invention.
  • FIG. 1 there is shown a device according to the invention generally designated by the reference numeral 1 which is constituted by a dump truck and whose platform carries a dump body 2 and a bituminous binder tank 3.
  • a graveler 5 for spreading gravel contained in the bucket 2 on a road surface on which the dump truck 1 moves.
  • the chip 5 comprises in particular a plurality of traps 8 of constant width in the direction transverse of the dump truck and arranged one after the other in the transverse direction, along the entire width of the bucket.
  • the hatches 8 are individually controlled, for their opening or closing by jacks 9, so that one can adjust the spreading width of the chip 5 by opening all or part of the hatches 8, in the transverse direction.
  • the bituminous liquid binder spreading ramp 6 comprises nozzles 7 distributed in the transverse direction, with a spacing interval or not constant.
  • the nozzles 7 are supplied with liquid bituminous binder, by the pumping and dispensing means 4 associated with the reservoir 3, so that all or part of the nozzles 7 can be supplied with a regulated liquid bituminous binder flow rate.
  • the ramp 6 is placed in the transverse direction, vis-à-vis the row of traps 8 of the chip, the length of the ramp 6 carrying the nozzles 7 in the transverse direction may be substantially equal to or greater than the length of the row of traps 8.
  • the spreading width of each of the traps is substantially equal to the width of the hatch in the transverse direction.
  • the spreading width of each of the hatches 8 is greater than the width of the hatches.
  • the nozzles 7 whose spacing is constant in the transverse direction, that is to say in the longitudinal direction of the ramp 6 are distributed in the transverse direction, depending on the spreading width of the hatches, that is to say the spreading width of each of the individual traps and the total spreading width.
  • FIG. 3 and 4 schematically shows a section of a ramp 6, along its length, in the transverse direction of the spreading device.
  • the ramp 6 is a ramp according to the prior art as used for example for point-in-time work on an automatic device which may be similar to the device shown in FIG. figure 1 .
  • the ramp 6 comprises nozzles 7 spaced from each other by a constant spacing pitch P in the transverse direction.
  • the flows 8 ' have a width L substantially equal to the width of the hatches 8 in the transverse direction.
  • the Figures 3 and 4 relate to the use of a device according to the prior art for repairing a band of the road surface with a width substantially equal to three times the spreading width of a hatch 8 is that is to say a width substantially equal to six times the pitch P of spacing of the nozzles 7 of the ramp 6.
  • the width of the strip treated for repair is of the order of 600 mm.
  • the jets 12 formed by the nozzles 7 of the ramp 6 which have a triangular flat shape and an angle ⁇ at the top have an impact surface on the road surface 10 whose width in the transverse direction is substantially equal to two steps of the ramp 6.
  • the successive steps 13 in the transverse direction of the impact surface of the jets 12 on the road surface 10 each correspond to the half-width of the impact surface of a jet 12.
  • the extreme steps 13a and 13b have only one overlap and the jets overflow outside the zone 14 in which the discharge of gravel is carried out.
  • FIG. 5 there is shown a histogram giving, in ordinate, the dosage or density of bitumen on the surface of impact of the jets with respect to the maximum density of recovery of the process and, on the abscissa, the zones of spreading of the three traps 8 to gravel located above the treatment zone 14.
  • the density of bitumen recovery is 100% and corresponds to two overlaps by bitumen jets 12.
  • the spreading density is 100% and corresponds to two overlays by jets 12, over two-thirds of the area from the central area.
  • the impact zone has only one overlap, which represents 50% of the binder density in the central area, as depicted on the figure 5 .
  • first jet 12 at the left limit of the zone 14 and the last jet at the right limit of the zone 14 overflow a half-step 13a or 13b, respectively, outside the zone 14 in which one realizes the spreading of gravel.
  • the marginal zones of width half a step from the impact zone and the two overflow zones 13a and 13b are covered with bitumen with a density of 50% of the maximum density in the central zone.
  • FIG. 4 there is shown the central portion 14a of the zone 14 in which the road surface 10 receives two overlays of liquid bituminous binder, the marginal zones 14c and 14d of width of a half-step of the recovery zone in which the road surface 10 receives only one bitumen overlap by a single jet 12 and the two zones 14'a and 14'b of width of a half-step, outside the treated zone 14, to left and right, which correspond to the half-steps 13a and 13b of the impact zone outside the gravel zone receiving a bitumen coating by a single jet 12.
  • the central portion 14a of the treated area is of medium quality and less than the quality of a coating in large width, because it comprises only two overlays of bitumen.
  • the lateral portions 14c and 14d which comprise only a bitumen cover can not ensure sufficient adhesion of the chippings which are easily torn off and the overflow areas 14'a and 14'b, outside the gravelled zone, present bitumen run-off which is harmful to the good quality of the roadway and which is not used to ensure adherence of the chippings.
  • the ramp 6 of the device according to the invention comprises a first set of nozzles 7a arranged with a constant spacing pitch P which can be for example 100 mm and therefore equal to the pitch of spacing of the nozzles of the ramp 6 according to the prior art described above and a second set of nozzles 7b each arranged, in the transverse direction, between two nozzles 7a of the first set of nozzles.
  • the nozzles 7b of the second set of nozzles are disposed at equal distance from the nozzles of the first set, between which they are placed, in the transverse direction corresponding to the longitudinal direction of the ramp 6.
  • the ramp 6 has been shown in a view from below, the figure representing the surface of the ramp directed towards the road surface 10.
  • the nozzles of the first set 7a are aligned along a first longitudinal axis of the ramp 6 and the nozzles 7b of the second set, along a second longitudinal axis.
  • This assembly facilitates the connection nozzles by means of liquid bituminous binder feed from the tank 3 via the pumping and dispensing means 4.
  • the width of the gravel traps 8 has been increased, so that the width L 'of the gravel spreading zones 8' in the transverse direction is equal to one and a half times the width L of gravel spreading areas 8 'in the case of the device according to the prior art.
  • the ramp comprises three nozzles 7a of the first set and two nozzles 7b of the second set each interposed between two nozzles 7a of the first set.
  • FIG. 6 On the figure 6 (bottom part), it is represented by a black circle the nozzles which are supplied with liquid bituminous binder and by a white circle, the nozzles which are not supplied with liquid bituminous binder for the use of the device according to the invention for the performing a repair in a zone 14 in the form of a strip.
  • the four central nozzles 7a of the first set of nozzles are fed, as well as the two nozzles 7b of the second set located immediately before the first fed nozzle 7a of the first set and immediately after the last fed nozzle 7a of the first set, in the transverse direction, i.e. in the longitudinal direction of the ramp and in the direction from left to right on the figure 6 .
  • the ramp is placed at a height H which is the usual ramp height in the case of the realization of road pavements of great width for the maintenance of roads.
  • This height is generally 50% higher than the ramp height h used for point-in-time work with automatic machines.
  • angles ⁇ of the flat jets 12 are such that, depending on the height H, the four central jets of the nozzles 7a of the first set each have an impact zone extending over three steps at the road surface 10 and intersect so that the four central steps 13 of the impact zone have three overlays of liquid bituminous binder constituted by the superposition of three jets.
  • the two nozzles 7b of the second set located outwards and on either side of all four fed nozzles 7a of the first set are fed with bitumen at a flow rate substantially equal to the feed rate of the nozzles 7a and are made so that the jets 15 formed by these triangular flat shape nozzles and having an apex angle ⁇ intersect the road surface 10 along an impact zone with a width of two steps in the transverse directions, given the height H of the ramp 6.
  • the jets 15 intersect two jets 12 at a central pitch 13 of the zone 14 and a single jet 12, following a first step 15c and following a last step 15d of the impact zone, in the transverse direction going from left to right.
  • the jets 15 are called shore jets because they allow the recovery of the banks of the zone 14, up to the exact limit of the zone 14 in the transverse direction, that is to say to the limits of the zone d spreading gravel.
  • the nozzles 7b have an asymmetrical opening 19 on either side of a plane 17 perpendicular to the axis 18 of the ramp 6 passing through the vertical axis 16 of the nozzle, the section of the opening of the nozzle 7b on either side of the plane 17 being such that the flow rate of the nozzle on one side of the plane 17 is equal to twice the flow passing on the other side of the plane 17.
  • the jet 15 of the nozzles 7b is formed of two half-jets 15a and 15b covering the road surface each the width of a step and having flow rates equal to two-thirds and one-third respectively of the total flow rate q of the nozzle 15. If the nozzle is fed at a rate q, the two half-streams have respective flow rates of 2q / 3 and q / 3.
  • the nozzles are mounted on the ramp 6 so that the part of the nozzle forming the maximum flow half-jet is located towards the outside of the ramp, that is to say directed towards one end and the part forming the half-jet with minimum flow towards the central part of the ramp 6.
  • the edge portions of the impact zone of the bitumen streams extending along the end pitches 15c and 15d comprise two overlays of bituminous binder, one of the overlaps being formed by a flow 2q / 3 and the other by a q / 3 flow (the third of the flow of a nozzle 7a).
  • the recovery of the end pitches 15c and 15d is therefore analogous to the recovery of all the central steps 13 which are formed by three recoveries at flow q / 3.
  • the covering layer is therefore perfectly constant, which ensures a very good quality of the coating consisting of chippings and bituminous binder.
  • the whole of the zone 14 in which the repair is carried out is of a perfect quality, since the layer of bitumen is of constant thickness on the whole road surface.
  • the lateral zones 14c and 14d corresponding to the steps 15c and 15d of the zone of impact on the banks of the strip in which the repair is made have only two overlays of bitumen but a bitumen density similar to the central zone, which provides a perfect hanging for gravel on the banks of the repair strip.
  • no bitumen runoff is produced outside zone 14, the width of which corresponds to the area of application of the chippings.
  • the device according to the invention thus makes it possible to carry out a repair over a width of the road surface equal to an integer multiple of the spreading width of a gravel trap which is itself substantially equal to three times the pitch of separating the nozzles from the first set of nozzles, with a constant bitumen surface density in a central zone of the repair strip in two edge zones whose boundaries correspond precisely to the boundaries of the gravel spreading zone.
  • the invention has been described in the case where a repair is carried out on a strip of a width equal to two spreading widths of gravel or to six pitch spacing of the nozzles of the first set of the ramp. It is possible to perform repairs on webs that generally have a width equal to an integer multiple equal to two or more of the spreading width of a chip trap door. In the case of a strip with a width equal to three times the spreading width of a hatch 8 of the chipboard, seven successive nozzles 7a of the first set of nozzles are fed and two nozzles 7b of the second set of and of the other seven nozzles of the first set fed with bituminous binder.
  • the two zones T1 and T2 of the repair zone have a bitumen dosage of 100% which corresponds to three recoveries per bitumen jets 12 or two overlaps by jets 12 and an overlap by an inner half-jet 15b of a nozzle 7b or a covering by a jet 12 and a covering by an outer half-jet 15a of a nozzle 7b .
  • the device according to the invention therefore makes it possible to produce repair strips of perfect quality, with a width adjustment corresponding to a multiple of the spreading width of a corresponding chip trap door. at three spacings of the nozzles of the first set of nozzles, this unit width may be of the order of 300 mm.
  • the device is particularly well suited to the classic case of repair on strips of width 600 mm. In this case, in addition to the advantages concerning the quality of realization of the repair strip, one obtains substantial economic advantages by avoiding to waste the bituminous binder and the chippings. For 600 mm wide jobs, it was possible to show that up to 16% of binder and 16% of gravel were saved.
  • the device according to the invention may comprise a chip of any type provided that this chip has a device for adjusting the grit width from traps whose opening and closing is controlled.
  • the chip machine can operate on the basis of any principle of dosing and guiding of chippings and in particular the device according to the invention may comprise a gravity-fed gravity sander, with diffusing rollers, metering rollers with or without a bib system and against -bavette.
  • the spreading width of the chippings poured by each of the traps may be substantially equal to or greater than the width of a hatch.
  • the nozzles of the second set interposed between the nozzles of the first set which are fed to provide the bank jets are disposed equidistant from the jets of the first set.
  • the bank jets 15 are, in this case, symmetrical jets consisting of two half-jets at the vertex ⁇ / 2. It is also possible to arrange the nozzles of the second set between the nozzles of the first set in the transverse direction at different distances from the two nozzles of the first set between which they are interposed. In this case, asymmetrical shear streams consisting of two half-jets of different apex angles are formed to cover two steps of the impact zone in the transverse direction.
  • the nozzles of the first set 7a and the nozzles of the second set 7b are fixed on the same body of the ramp 6.
  • the ramp may also comprise two bodies of parallel ramps and placed vis-à-vis in the transverse direction. In this case, it is possible to implant the first set of nozzles 7a on a first ramp body and the second set of nozzles 7b on the second ramp body parallel to the first one.
  • the nozzles and in particular the nozzles of the second set are controlled and fed independently of each other.
  • the invention applies mainly to point-in-time repair work; however, these repairs can be carried out on any width band.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Road Repair (AREA)
  • Soil Working Implements (AREA)

Claims (6)

  1. Vorrichtung zum Spritzen von flüssigem Bindemittel und Streuen von Splitt am Heck einer Straßenbaumaschine (1), welche Folgendes aufweist: zumindest eine Rampe (6) zum Spritzen von Bindemittel, die an einem heckseitigen Abschnitt der Straßenbaumaschine (1) in einer Querrichtung befestigt ist und eine erste Anordnung von Spritzdüsen (7) für Bindemittel, welche längs der Länge der Rampe (6) in der Querrichtung in einer konstanten Abstandsteilung (P) verteilt und auf eine Straßenoberfläche (10) ausgerichtet sind, auf welcher sich die Straßenbaumaschine (1) fortbewegt, und einstellbare Einrichtungen (4) zur Versorgung der Rampe (6) mit Bindemittel aufweist, dergestalt, dass alle oder Abschnitte der Spritzdüsen (7a) der ersten Anordnung versorgt werden, um am Auslass einer jeden Spritzdüse (7a) einen flachen Strahl (12) mit einem Spitzenwinkel (α) derart zu bilden, dass jeder Strahl (12) abhängig von der Höhe (H) der Rampe (6) über der Straßenoberfläche (10) auf der Straßenoberfläche (10) eine Aufprallfläche mit einer Breite von ungefähr drei Teilungen in der Querrichtung besitzt und dass sich die Strahlen (12) der ersten Anordnung der Spritzdüsen auf eine solche Art und Weise überschneiden, damit sich für jede der aufeinanderfolgenden Teilungen (13) der Aufprallflächen der Strahlen (12) in der Querrichtung drei Strahlen (12) überlagern; und einen Granulator (5), welcher am Heck der Straßenbaumaschine (1) in einer Queranordnung gegenüber der Rampe (6) zum Spritzen von Bindemittel befestigt ist, zum Streuen von Splitt, der eine Vielzahl von Klappen (8) gleicher Breite aufweist, welche in der Querrichtung nebeneinander liegen und mit Steuermitteln (9) für ihre Öffnung oder Schließung auf eine solche Art und Weise verbunden sind, dass der Durchlauf eines Stroms aus Splitt (8') mit einer konstanten Breite von ungefähr drei Teilungen auf der Straßenoberfläche (10) für jede der Klappen (8) ermöglicht oder gesperrt wird, und dass die gesamte Streubreite des Granulators (5) durch die Öffnung aller oder von Abschnitten der Klappen (8) einstellbar ist, dadurch gekennzeichnet, dass:
    - die Rampe (6) zum Spritzen von Bindemittel weiterhin eine zweite Anordnung von Spritzdüsen (7b) aufweist, von welchen jede zwischen zwei aufeinanderfolgenden Spritzdüsen (7a) der ersten Anordnung von Spritzdüsen in der Querrichtung angeordnet ist, und welche auf eine solche Weise ausgebildet sind, dass, wenn sie durch die einstellbaren Einrichtungen (4) zur Versorgung der Rampe (6) mit Bindemittel versorgt werden, jede einen ersten und zweiten aufeinanderfolgenden Halbstrahl längs der Querrichtung erzeugt, wobei jeder eine Aufprallfläche einer Breite auf weist, die im Wesentlichen gleich einer Teilung in der Querrichtung ist, beiderseits einer senkrecht zur Querrichtung stehenden Achse (16) der Spritzdüse (7b) anliegend, wobei der zum Ende der Rampe (6) gelegene erste Halbstrahl (15a) einen Durchfluss aufweist, der im Wesentlichen gleich dem Doppelten des Durchflusses des zweiten Halbstrahls (15b) ist, welcher auf der Seite des Mittelabschnitts der Rampe (6) gelegen ist; und dass
    - die einstellbaren Einrichtungen (4) zur Versorgung der Rampe (6) mit Bindemittel zur Sicherstellung einer selektiven Versorgung der Spritzdüsen (7b) der zweiten Anordnung mit einem Durchfluss, der im Wesentlichen gleich dem Durchfluss der Versorgung der Spritzdüsen (7a) der ersten Anordnung ist, dergestalt vorgesehen sind, dass ein Streuen von Splitt und Spritzen von Bindemittel auf eine Breite der Straßenoberfläche (10), welche gleich einem Vielfachen der Streubreite einer Klappe (8) ist, mit einer Überlagerung von zwei Bindemittelstrahlen auf einer Teilung (15c, 15d) an einem jeden der Enden der Breite der Straßenoberfläche (10) und einer Überlagerung von drei Strahlen (15, 12) auf allen anderen Teilungen (13) in der Mitte der Breite der Straßenoberfläche (10) und mit einem Spritzen von drei Bindemittelstrahlen für jede der Streubreiten eines Stroms aus Splitt (8') einer Klappe (8) des Granulators (5) bewirkt wird.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Klappen (8) des Granulators Splitt direkt auf die Straßenoberfläche (10) streuen, wobei die Streubreite des Stroms aus Splitt (8) einer Klappe (8) im Wesentlichen gleich der Breite der Klappe (8) in der Querrichtung ist.
  3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Klappen (8) des Granulators mit der einen von zumindest einer Diffusorwalze (11), einer Dosierwalze oder einer Schürze oder Gegenschürze verbunden sind, und dass die Breite des Stroms aus Splitt (8) auf der Straßenoberfläche (10) größer ist als die Breite der Klappen (8) des Granulators (5).
  4. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Spritzdüsen der ersten Anordnung (7a) und die Spritzdüsen der zweiten Anordnung (7b) an einem gleichen Körper der Rampe (6) angeordnet sind.
  5. Vorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Spritzdüsen der ersten Anordnung (7a) an einem ersten Körper der Rampe und die Spritzdüsen der zweiten Anordnung (7b) an einem zweiten Körper der Rampe (6) parallel zum ersten Körper der Rampe angeordnet sind.
  6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Spritzdüsen der zweiten Anordnung (7b) jeweils im gleichen Abstand der Spritzdüsen der ersten Anordnung (7a) angeordnet sind, zwischen denen sie in der Querrichtung angeordnet sind.
EP03292876A 2002-11-25 2003-11-19 Vorrichtung zum Spritzen von Bindemittel und Streuen von Aggregat am Heck einer Strassenbearbeitungsvorrichtung Expired - Lifetime EP1422346B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0214760A FR2847597A1 (fr) 2002-11-25 2002-11-25 Dispositif d'epandage de liant liquide et de gravillons a l'arriere d'un engin de travaux routiers
FR0214760 2002-11-25
FR0309616A FR2847598B1 (fr) 2002-11-25 2003-08-04 Dispositif d'epandage de liant liquide et de gravillons a l'arriere d'un engin de travaux routiers
FR0309616 2003-08-04

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EP1422346A1 EP1422346A1 (de) 2004-05-26
EP1422346B1 true EP1422346B1 (de) 2008-04-23

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US (1) US6802464B2 (de)
EP (1) EP1422346B1 (de)
CN (1) CN1502749A (de)
AT (1) ATE393264T1 (de)
DE (1) DE60320510D1 (de)
FR (1) FR2847598B1 (de)

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DE102010013982A1 (de) 2010-04-06 2011-10-06 Bomag Gmbh Vorrichtung zum Erzeugen von Schaumbitumen und Verfahren zu deren Wartung
DE102010014904A1 (de) 2010-04-14 2011-10-20 Bomag Gmbh Einsprüheinrichtung für eine Baumaschine und Verfahren zum Betrieb einer Einsprüheinrichtung
DE102010035129A1 (de) 2010-08-23 2012-02-23 Bomag Gmbh Einsprüheinrichtung für eine Baumascine zur Bodenbearbeitung, Baumaschine mit einer Einsprüheinrichtung und Verfahren zum Betrieb einer Einsprüheinrichtung
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US20040151545A1 (en) 2004-08-05
US6802464B2 (en) 2004-10-12
ATE393264T1 (de) 2008-05-15
EP1422346A1 (de) 2004-05-26
FR2847598B1 (fr) 2005-03-04
FR2847598A1 (fr) 2004-05-28
DE60320510D1 (de) 2008-06-05
CN1502749A (zh) 2004-06-09

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