EP0458667B1 - Vorrichtung zur Ausbreitung flüssigen Materials oder dgl., insbesondere einer Haftemulsion für bituminöses Mischgut auf die Strassenoberfläche, und Strassenbaumaschine, insbesondere Strassenfertiger mit einer derartigen Vorrichtung - Google Patents

Vorrichtung zur Ausbreitung flüssigen Materials oder dgl., insbesondere einer Haftemulsion für bituminöses Mischgut auf die Strassenoberfläche, und Strassenbaumaschine, insbesondere Strassenfertiger mit einer derartigen Vorrichtung Download PDF

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Publication number
EP0458667B1
EP0458667B1 EP91401040A EP91401040A EP0458667B1 EP 0458667 B1 EP0458667 B1 EP 0458667B1 EP 91401040 A EP91401040 A EP 91401040A EP 91401040 A EP91401040 A EP 91401040A EP 0458667 B1 EP0458667 B1 EP 0458667B1
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EP
European Patent Office
Prior art keywords
spreading
tube
box girder
box
nozzle
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
Application number
EP91401040A
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English (en)
French (fr)
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EP0458667A1 (de
Inventor
Jean-Pierre Reymonet
Michel Perrin
Clément Beatrix
Pierre Defontaine
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Colas SA
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Colas SA
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Publication date
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Publication of EP0458667A1 publication Critical patent/EP0458667A1/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
    • E01C19/16—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
    • E01C19/48—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

Definitions

  • the present invention relates to a device for spreading on the surface of a road an emulsion for bonding bituminous mixes, a bituminous fluid substance or a similar fluid substance, as well as to a machine. pavement construction, in particular of the paver type, comprising such a device.
  • This type of device does not have a base in the extension of the tracks of the finisher, which is provided with two small ramps complementary to its rear part, and this precisely in the parts of said bonding layer which are subsequently the most used.
  • the spreading booms with multiple orifices used on conventional binder spreaders prove, in practice, totally unsuitable for this new device: the spreading on the ground of the usual quantities of binder - quantities (300 g per m2 to 1.2 kg per m2) is produced by moving the spreading ramp at the speed of the paver, i.e.
  • the present invention therefore aims to overcome these various drawbacks. It offers, in particular a spreading device allowing a flow more important by binding by ejection nozzle, which makes it possible to reduce the risk of obstruction of said nozzles: this device achieves dynamic spreading by a back and forth movement of the binder jets across the width of the roadway, said jets being jets extending to the ground with a significant component along the advancement axis of the paver.
  • the device proposed by the invention has the advantage of being compact enough to be able to be placed at the rear of the finisher, behind the tracks thereof, between said tracks and the means of spreading bituminous asphalt on the road.
  • the device proposed by the invention does not require any flexible piping for its supply, which also reduces its size and increases its reliability.
  • certain variants of the device of the invention have the important characteristic of using the binder emulsion as a hydraulic fluid to actuate the ejection nozzles.
  • the present invention therefore relates to a device for spreading on the surface of a road an emulsion for bonding bituminous mixes, a bituminous fluid substance or a similar fluid substance, comprising on a mobile machine , at least one spreading ramp along which spreading is at least partially carried out, said ramp being associated with at least one ejection nozzle, as well as with a supply circuit for said nozzle, characterized in that that said nozzle is able to move relative to the mobile machine transverse to the direction of movement thereof and is associated with motor means intended to drive it in displacement during spreading, in a movement of va and come.
  • an ejection nozzle is mounted on a box connected to the supply circuit and intended to contain inside its substance to be spread, in order to ensure the supply of said nozzle.
  • a spreading ramp comprises at least one hollow tube communicating with the interior of said box, one of said hollow tube and said box being fixed relative to the machine and communicating with the supply circuit for supplying said tube and said box, the other being able to slide relative to the first and carrying and supplying at least one ejection nozzle.
  • a box is a box beam extending substantially along the length of a spreading ramp, a tube extending in part substantially longitudinally in said box beam to open from it at at least one of its ends, said tube communicating with the interior of said box beam through at least one orifice with which it is provided, said tube and said box beam being able to slide relative to one another.
  • a box beam is fixed relative to the machine and is associated with at least one tube extending partially longitudinally in its interior, said tube bearing on a part outside said beam -caisson an ejection nozzle, said tube being able to slide longitudinally relative to said box beam.
  • a box beam is in particular associated with two carrying tubes each of an ejection nozzle, each of these tubes passing through said box beam respectively at one of its ends.
  • a box girder carries at least one nozzle and slides on a fixed tube which passes through it at minus one of its ends.
  • a box girder may in particular comprise at least two nozzles distributed over its length.
  • a box girder has, for example, a nozzle towards each of its ends.
  • a tube extends from one end to the other of a box girder.
  • the device comprises at least two spreading ramps, one of which is a central spreading ramp allowing spreading along substantially the width of the mobile machine, the other being a lateral spreading ramp allowing a spreading on the side of the main width of the machine.
  • the central spreading ramp comprises a fixed tube extending substantially over a whole width of the mobile machine and a box beam carrying at least one nozzle and capable of sliding on said fixed tube.
  • the lateral spreading boom comprises a fixed box beam extending over substantially a whole width of the mobile machine and associated with at least one nozzle carrying tube emerging from said box beam at one end of the latter and suitable to slide relative to said box girder.
  • the device comprises two fixed box beams each extending in offset manner respectively over substantially a half-width of the machine, and each associated with a sliding tube carrying nozzle emerging from the box beam with which it is associated at the level of the half-width of the other box girder.
  • the substance to be spread is used, in the driving means, as a hydraulic fluid.
  • a tube capable of admitting a relative sliding movement relative to a box girder is secured to a delimiting piston in said box girder two chambers each supplied with substance to be spread, the pressure of said substance in these two chambers being adjusted so that said tube is caused to slide under the effect of the differential pressure exerted on said piston.
  • the tube has orifices for communication with each of the two chambers delimited by the piston in the box beam.
  • the tube In the case where the tube is fixed, the box beam carrying and supplying at least one ejection nozzle, the tube communicates with each of the two chambers by two parts separated from each other in a sealed manner and each connected to the supply circuit.
  • the tube carrying and supplying an ejection nozzle the tube is associated with at least one valve intended to close the communication orifice of said tube with that of the two chambers of the beam. box in which the material pressure is lowest.
  • a box girder is associated with two reversing valves, each chamber of said box girder being associated with a substance flow and reflux pipe, each of these two valves being connected to each of these two pipes, and also being connected to a substance supply pipe under pressure, one of the valves connecting the substance supply pipe to the flow and reflux pipe associated with that of the two chambers of the box girder, in which the pressure of the substance is the strongest, the other of the two valves connecting the piping associated with the other of the two chambers to a return pipe to the substance supply pipe.
  • the return piping to the supply pipe substance has at least one pressure relief and / or pressure relief valve.
  • the valves associated with a box beam are servo valves which automatically reverse at the end of travel of the ejection nozzle (s).
  • the motor means can also comprise at least one hydraulic cylinder or a motor actuating a rack, the motor being a hydraulic motor.
  • a tube and a box beam can be guided in their relative sliding by means of a piston, integral with said tube and disposed inside said box beam, said piston cooperating with the interior walls of said box beam. , and / or of a sleeve integral with said tube and disposed outside the box girder, the inner walls of said sleeve sliding on the outer walls of said box girder.
  • An ejection nozzle can be associated with a valve allowing its closure to be controlled as well as with pressure-calibrated shutters.
  • the jet of substance leaving an ejection nozzle has, on the ground, an important component according to the direction of movement of the mobile machine.
  • a paver construction machine of the paver type, comprising, on a chassis mounted on displacement means, means for spreading bituminous mixes and means for feeding said spreading means. , characterized in that it comprises a device for spreading a bonding emulsion of said coated materials on the surface of a road.
  • the device for spreading a bonding emulsion is arranged at the rear of the chassis with respect to the direction of movement of the machine during spreading of the coated, between the means for moving said machine and the means for spreading bituminous coated.
  • the device for spreading a bonding emulsion is disposed in the part of the supply means which is located at the rear of the chassis relative to the direction of movement of the machine during the spreading of the coated, its feed belt being notably substantially raised and / or inclined in its rear part, above said means for spreading a bonding emulsion.
  • a machine comprising a cockpit may include an emulsion tank mounted on the cockpit; this tank is advantageously an interchangeable tank and is mounted on hydraulic cylinders with adjustable height.
  • the machine may include an emulsion dosing group, which includes a metering pump supplying the nozzle (s) of the spreading device.
  • a machine according to the invention comprises means making it possible to reheat or maintain the bonding emulsion at a temperature of approximately 80 ° C.
  • the device for spreading a bonding emulsion is capable of being separated from the chassis of said machine.
  • Figure 1 is a side view of a machine of the finisher type according to the invention, that is to say equipped with a spreading device according to one embodiment of the invention.
  • Figure 2 is a schematic perspective view of the spreading device with which the machine of Figure 1 is provided.
  • Figure 3 is a schematic representation of the spreading device of Figure 2.
  • Figure 4 illustrates a kinematics of spreading of the bonding layers on a road, produced with the spreading device of Figures 2 and 3, without the use of the wideners.
  • Figure 5 is a schematic perspective representation of a spreading device according to a second embodiment of the invention.
  • Figure 6 is a schematic perspective representation of a spreading device according to a third embodiment of the invention.
  • Figure 7 is a schematic representation of a device close to that of Figures 2 and 3, and according to a fourth embodiment of the invention.
  • Figures 8 and 9 are representations of machines of the finisher type equipped with a spreading device according to the invention and in accordance with other possible embodiments.
  • a machine of the finisher type according to the invention is mounted on tracks 2 and essentially comprises a pilot cabin 3, a hopper 4 for receiving bituminous mixes, said hopper 4 being disposed at the front of the paver, conventional means 5 for spreading bituminous mixes which are constituted in particular by a distribution screw and which are arranged at the rear of finisher 1, a table 6 for smoothing deposited asphalt layers, as well as a device 7 for spreading a binder emulsion, associated with an emulsion supply circuit referenced by 8 as a whole.
  • the hot bituminous mixes are transferred in a conventional manner from the hopper 4 to the means 5 for spreading the mixes via a transfer mat (not shown) placed on the finisher 1 between the cabin 3 and the part of said finisher 1 which carries the tracks 2.
  • This carpet is slightly raised in its rear part above the spreading means 7.
  • the smoothing table 6 is mounted at the rear of the finisher 1, beyond the asphalt spreading means 5, on two bent arms 9 extending on each side of the machine from substantially the middle part of the tracks to beyond the spreading means 5.
  • These two arms 9 are articulated at their end opposite to the smoothing table 6 on spacers 10, mounted, at the level of the tracks 2, the inclination of said arms 9 relative to the plane of the ground determining the height of the smoothing table 6 and being adjusted by means of jacks 11 s' each extending between a attachment point on the spacer 10 and an attachment point 12 on the side of the tractor frame in the extension of the floor of the cabin 3, at the rear of the latter.
  • the supply circuit 8 essentially comprises an emulsion reservoir 13, with a capacity greater than 2500 liters.
  • This reservoir 13 is disposed above the cabin 3 and extends substantially over the entire length thereof. It is mounted on four hydraulic lifting cylinders 14 extending perpendicular to the floor of the cabin 3 in the vicinity of each of the four ends thereof. These jacks 14 allow the height of the reservoir 13 on the finisher 1 to be adjusted as desired, said reservoir 13 admitting, for example, a high position of use and a low position of storage facilitating the transport of the finisher 1.
  • This reservoir 13 is a cartridge container which can be replaced during operation, if necessary, the walls of this reservoir 13 comprising valve orifices intended to cooperate with the male ends of the pipes 15 and 16 , which are supply and return pipes connecting the reservoir 13 to a dosing group 17 of the binder emulsion.
  • the reservoir 13 is also a heat-insulated reservoir that can be equipped with a maintenance heater, for example electric.
  • the reservoir 13 being, for example, a cylindrical tank rolling on the spread bitumen and compacting it.
  • This rolling cylindrical tank 13 towed by the finisher would of course be associated with a metering pump 17, radiant heating and various other reservoirs (rinsing product, anti-sticking product).
  • the device 7 for spreading binder comprises, maintained in a rectangular parallelepiped housing 46 extending along the base width of the finisher 1, two spreading ramps 18 and 19, the spreading ramp 18 being a main ramp intended to spread the binder over the base width of the paver 1, the ramp 19 being a ramp for its part, spreading the binder at the right and left widenings of the road, on each side of the base width of the paver 1.
  • the main ramp 18 essentially comprises a hollow cylindrical tube 20 extending over substantially the entire base width of the finisher 1, said tube 20 being fixed relative to said finisher 1.
  • This tube 20 communicates, via an orifice 21 , which it is provided in the middle, with the inside of a box beam 22 extending longitudinally on said tube 20, which passes through it at each of its ends, said tube 20 and said box beam 22 being coaxial.
  • This box beam 22 is mounted movable in axial translation on said tube 20.
  • the box girder 22 is provided with an ejection nozzle 23 extending perpendicular to the axis of said box girder 22 and intended to be opposite the road floor.
  • Each ejection nozzle 23 is associated with a pressure calibrated shutter 24.
  • the tube 20 is sealed off at one of its ends, its other end being extended by a pipe 25 of the circuit 8 for supplying emulsion.
  • the box girder 22 is provided at its two lateral walls traversed by the tube 20, with dynamic seals 26 ensuring in sliding the sealing of the box girder 22 on the tube 20.
  • the box girder 22 is extended on its upper part, and substantially opposite the nozzle 23 by a spacer 27 connected to the sliding rod 28 of a double-acting hydraulic cylinder 30.
  • This cylinder 30 extends along the tube 20, from said spacer 27 up to the level of the closed end of the tube 20.
  • On the finisher 1 are further mounted, at the upper part of the spacer 27 and on the side opposite to the jack 30 relative to the orifice 21, stroke adjustment contacts 31 connected to a control circuit (not shown) for the movement of the jack 30.
  • Said jack 30 thus serves as a motor means for generating on the box beam 22 a movement back and forth between the two positions where the spacer 27 is at the stroke adjustment contacts 31.
  • the position of the stroke contacts 31 along the tube 20 is adjustable, which makes it possible to adapt the stroke of the nozzles 23 to the width of the roadway when that -this is less than the base width of finisher 1.
  • the extensible secondary ramp 19 comprises, for its part, essentially, a box beam 32 fixed relative to the finisher 1 and extending over the entire base width of said finisher 1, the ramps 18 and 19 being arranged one behind the another at the rear of the finisher 1.
  • This box girder 32 is associated with two tubes 33 of the same type as the tube 20, which are coaxial with it and which pass through it respectively at one end. These two tubes 33 are open at their end inside the box beam 32 and open, at their end outside said box beam 32, each on an ejection nozzle 34.
  • Each ejection nozzle 34 extends towards the ground, perpendicular to the tube 33 with which it is associated, and is provided with a calibrated shutter 35, as well as with a valve 36 controlling its opening or closing.
  • the box 32 is associated, at the level of its walls traversed by said tubes 33, with dynamic seals 37 ensuring the tightness of the device, the tubes 33 being, moreover, provided at their end inside said box beam 32 of pistons 38 which are drilled discs, so as to allow the passage of the emulsion, the outside diameter of which corresponds substantially to the inside diameter of the box beam 32 and which serve to guide the movement of the tubes 33 inside said box beam 32.
  • Each tube 33 is associated with a double-acting hydraulic cylinder 40 extending along the box beam 32 of the middle part thereof up to a spacer 41 secured to the end of said tube 33 which carries a nozzle 34 , said spacer 41 being connected to the movable rod 42 of the hydraulic cylinder 40.
  • Each tube 33 is also also guided in translation relative to the box beam 32 by the inner walls of a sleeve 43 sliding along the outer walls of the box beam 32, the inside diameter of this sleeve 43 corresponding substantially to the outside diameter of said box beam 32.
  • each sleeve 43 has a tongue 44 folded towards outside and intended to cooperate with two stroke adjustment contacts 45 for controlling the movement back and forth of a tube 33 relative to the box beam 32.
  • These contacts 45 are also adjustable es relative to the finisher 1 so that the stroke of the nozzles 34 is adjusted to the extra width intended to be swept by the nozzle 34.
  • the housing 46 can be easily dissociated from the chassis of the finisher 1 to which it is secured by interlocking in a complementary recess.
  • the pipes 25 and 47 are therefore able to be easily disconnected from the pipe 48, which is connected to them via self-sealing quick connect connectors.
  • a pipe 47 of the supply circuit 8 in emulsion Inside the box beam 32 opens, substantially in its middle part, a pipe 47 of the supply circuit 8 in emulsion.
  • This piping 47 and the piping 45 are both supplied by the arrival of a piping 48 connected to a binder dosing pump 49 integrated into the dosing group 17.
  • Each of the piping 25 and 47 is provided with a non-return valve. 50.
  • the piping 48 is associated, for its part, between the pump 49 and the piping 47 and 25, with a purge valve 51.
  • the housing 46 is advantageously associated with a nozzle 53 allowing it to breathe into its interior. hot air intended to maintain the box girders 22 and 32 at a temperature equal to approximately 80 ° C.
  • the pipes 15, 16, 25 and 47 are, for their part, associated with heating cords.
  • the box beam of the main ramp has four nozzles distributed in its length instead of two.
  • the extension tubes of the secondary ramps each have two internal sprinklers distributed over their length. Depending on the width of the roadway on which the spreading is carried out, users can adjust the extension length of these tubes and use the two sprinklers, or only one, or even none.
  • said box beam 22 achieves, as has been shown more particularly in FIG. 4, a spreading of binder in successive layers 53 having a parallelogram contour, the main length of which is slightly oblique with respect to the direction in which the base width of the finisher l extends, due to the combination of the advancement Al of said finisher l and the displacement A2 of the ejection nozzles 23 perpendicular to said advancement Al.
  • the cooperation of the spacer 27 and one of the contacts 31 controls the path return of the box beam 22.
  • the device 7 and the movement of the nozzles is controlled by the speed and / or the movement of the finisher l.
  • the synchronization of the movements of the jack 30 and of the advancement of the paver 1 will advantageously be adjusted so that, during a back and forth movement of the nozzles 23 along the ramp 18, the paver 1 has advanced one distance D coinciding with the component in the direction of travel of the finisher l of the jets on the ground, which component is preferably chosen to be large.
  • the ejection nozzles continue to spread the binder emulsion on the road during their return journey: the spreading carried out is a Z spreading with partial successive overlapping of the layers of binder by one another.
  • the nozzles 23 do not spread during the return path: the spreading carried out is a spreading with parallel layers 53, which may possibly overlap according to their lateral lengths.
  • the operating principle of the nozzles 34 at the road wideners is of course substantially identical.
  • This device 100 comprises, in the basic width of the paver, two box girders 101 and 102 extending offset relative to each other in the direction of travel of the paver, each over half the width of that -this.
  • Each box beam 101, 102 is associated with a tube, referenced respectively by 103 and 104, extending partially in its interior and emerging from said box beam 101, 102 at the end thereof close to the middle of the width of the finisher.
  • Each of these tubes 103 and 104 is extended at its end outside the box girder 101 or 102 with which it is associated, by an ejection nozzle 105 or 106 respectively.
  • the tubes 103 and 104 being slidably mounted in box beams 101 and 102, each of the nozzles 105 or 106 is intended to sweep, offset from the other, half of the base width of the finisher with which it is associated.
  • each box beam 101 or 102 opens, at its end opposite to the tube 103 or 104 with which it is associated, a pipe 106 or 107 for supplying binder.
  • Said pipes 106 and 107 are themselves supplied by a common inlet pipe 108, the arrival with a binder being controlled by an inverting valve 109.
  • the assembly is mounted on a support 110 extending in the base width of the finisher and on which a carriage 111 can be connected, connected by spacers 112 and 113 respectively to the nozzles 105 and 106.
  • This carriage 111 is driven in movement according to the base width of the finisher, on the support 110, by means of motor means comprising a rack 114 fixed on the carriage and cooperating with a toothed wheel 115 actuated by the shaft of a hydraulic motor 116 fixed on the support 120.
  • the hydraulic circuit of this engine 116 is integrated into the finisher circuit.
  • the spacers 112 and 113 are distributed so that when the tube 104 is in its extreme retracted position relative to the box beam 102, the tube 103 is in its extreme extended position relative to the box beam 101, and vice versa . Again, due to the combination of the advancement of the paver and the movement of the nozzles along the width thereof, the spreading will be carried out in layers substantially oblique to the direction of movement of the paver.
  • each beam-box assembly 201-202 / tube 203-204 serving as a hydraulic cylinder, that of these two cylinders which is in extension movement causing the other of these cylinders in retraction movement, via the carriage 211.
  • the emulsion supply circuit which has not been described here in full, will advantageously be type of those described below for other alternative embodiments of the invention.
  • FIG. 7 Another possible variant of the spreading device proposed by the invention has also been shown in FIG. 7.
  • This other device is substantially similar to that shown in Figures 2 and 3 and we have used the elements of the device shown in Figures 2 and 3 found on the device of this Figure 8, the same increased reference number of 400.
  • This spreading device 407 comprises in particular a main spreading ramp 418 associated with a lateral spreading ramp 419.
  • the main ramp 418 comprises, on a hollow tube 420 fixed relative to the finisher, a box beam 422 capable of sliding on said tube. Towards each of its ends, this box girder is also associated with two adjustment contacts 431 controlling its back and forth movement between two positions on the tube 420.
  • the lateral ramp 419 essentially comprises a box girder 432 fixed by relative to the finisher and associated with two tubes 433 each opening at one end of said box beam 432.
  • Each tube 433 has outside of said box beam 432 an ejection nozzle 434 and is associated with a tongue 444 intended to cooperate with contacts 445 to control the movement back and forth of said tube 433 relative to the box girder 432.
  • the tube 420 is associated in the middle with a piston 460 which separates the box beam 422 into two chambers 461 and 462 and which also sealingly separates said tube 420 into two parts 463 and 464, the chamber 461 and the part 463 of the tube 420 being on the same side with respect to the piston 460.
  • Each of the parts 463 and 464 is respectively extended by a pipe 465 and 466 serving for the flow and reflux of the material.
  • each of these parts 463 and 464 communicates with the chamber 461 and the chamber 462 respectively via an orifice 467, 468 which passes through the wall of the tube 420 at the end of the piston 460.
  • This main ramp 418 is associated with two reversing valves 469 and 470, each with three inputs of which only two are in communication.
  • Each of these two valves 469, 470 is connected respectively by an inlet 471, 472 to the pipe 466 and by an inlet 473, 474 to the pipe 465.
  • the third inlet of the valve 470 is connected to a supply pipe for binder 475 where the emulsion arrives hooking pressurized by a pump 449 of the dosing unit 417.
  • the third inlet of the valve 469 is connected to a bypass circuit 476 which returns the binder to the pipe 475 after passing through a relief valve 477 and discharging into the supply circuit.
  • a valve 475 is mounted in bypass with respect to the pump 449 in order to regulate the pressure of the entire binder circuit.
  • the box beam 432 is in turn separated into two secondary box beams 479-480 distributed on each side of its middle part.
  • the two tubes 433 respectively associated with each of these two secondary box girders 479-480 are both provided, at their end furthest from the nozzle 434 that each carries, with a piston referenced respectively by 481 and 482 separating so waterproof the box beam 479-480, in which it is in two chambers referenced respectively by 479A, 479B and 480A, 480B.
  • Each of these two chambers is extended at its ends by flow and reflux pipes referenced respectively by 483A, 384B for the box beam 479 and 484A, 484B for the box beam 480.
  • the box beams 479 and 480 are in in addition to each associated respectively with two valves referenced by 485, 486 with three inlets, which play relative to the flow and reflux pipes 483A, 483B and 484A, 484B, the same role as the valves 469, 470, opposite pipes 465 and 466, the valves 485 each being associated with a bypass circuit 487 associated with a relief valve 488, the three circuits 467 and 487 discharging in the supply circuit.
  • each tube 433 passes through the piston 481, 482 with which it is associated to open out. respectively in chamber 479A, 480A, its part which extends respectively in chamber 479B, 480B being provided, towards piston 481 or 482, with an orifice 489 allowing the flow in chamber 479B or 480B to communicate with the nozzle 434 carried by the tube 433 with which said chamber is associated.
  • This orifice 489 is completed by a pressure relief valve 490 alternately placing the tube 433 in communication with that of the two chambers 479A and 479B or 480A and 480B in which the emulsion is under the highest pressure.
  • the machines and devices which have just been described are advantageously used for spreading aqueous bitumen emulsions spread simultaneously with one or more agents for breaking the emulsion, so that the breaking of the emulsion occurs in the mass distributed, in accordance with the process developed by the company COLAS under the trade name Emulcol and described in particular in its patent FR 2,573,455.

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

Claims (42)

  1. Vorrichtung zur Abgabe eines Haftklebers für bituminöses Mischgut, einer flüssigen bituminösen Substanz oder einer ähnlichen flüssigen Substanz auf die Oberfläche einer Straße, die auf einer fahrbaren Maschine (1) wenigstens eine Abgaberampe (18, 19; 100; 200; 418, 419) umfaßt, auf deren Länge die Abgabe wenigstens teilweise verwirklicht ist, wobei die genannte Rampe mit wenigstens einer Ausstoßdüse (23, 34; 105, 106; 205, 206; 423; 434) sowie einem Zufuhrsystem (8; 106, 107, 108; 475) für die genannte Düse verbunden ist, dadurch gekennzeichnet, daß die genannte Düse (23, 34; 105, 106; 205, 206; 423; 434) in bezug auf die fahrbare Maschine (1) quer zu deren Bewegungsrichtung bewegbar ist, und mit Antriebsmitteln (30; 116) verbunden ist, die sie während der gesamten Dauer der Abgabe zu einer Hin- und Herbewegung antreiben.
  2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß eine Ausstoßdüse (23, 34; 105, 106; 205, 206; 423, 434) auf einem Kasten (22, 32; 101, 102; 201, 202; 422, 432) angebracht ist, der mit dem Zufuhrsystem verbunden und dazu bestimmt ist, in seinem Inneren die abzugebende Substanz zu enthalten, um die Zufuhr zur genannten Düse zu sichern.
  3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß eine Abgaberampe wenigstens ein hohles Rohr (20, 33; 103, 104; 203, 204; 301, 420, 433) umfaßt, das mit dem Inneren des genannten Kastens (22, 32; 101, 102; 201, 202; 302; 422, 432) in Verbindung steht, wobei entweder das hohle Rohr oder der genannte Kasten in bezug auf die Maschine (1) feststeht und mit dem Zufuhrsystem (58, 106, 107, 108, 475) in Verbindung steht , um das genannte Rohr und den genannten Kasten zu speisen, und das andere in bezug auf das erste verschiebbar ist und wenigstens eine Ausstoßdüse (23, 34; 105, 106; 205, 206; 303; 423, 434) trägt und speist.
  4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß ein Kasten (22, 32; 101, 102; 201, 202; 422, 432) ein Kastenträger ist, der sich annähernd über die Länge einer Abgaberampe erstreckt, wobei sich ein Rohr (20, 33; 103, 104; 203, 204; 301; 420, 433) zum Teil annähernd longitudinal in dem genannten Kastenträger erstreckt, um aus diesem an wenigstens einem seiner Enden herauszukommen, wobei das genannte Rohr mit dem Inneren des genannten Kastenträgers mittels wenigstens einer Öffnung (467, 468, 489), mit der es versehen ist, in Verbindung steht, wobei das genannte Rohr und der genannte Kastenträger, einer in bezug auf den anderen, verschiebbar sind.
  5. Vorrichtung nach Anspruch 4, dadurch gekennzeichnet, daß ein Kastenträger (32; 101, 102; 201, 202; 432) in bezug auf die Maschine feststehend ist und mit wenigstens einem Rohr (33; 103, 104; 203, 204; 433) verbunden ist, das sich zum Teil longitudinal in seinem Inneren erstreckt, wobei das genannte Rohr auf einem Teil an der Außenseite des genannten Kastenträgers eine Ausstoßdüse (34; 105, 106; 205, 206; 434) trägt, wobei das genannten Rohr in bezug auf den genannten Kastenträger longitudinal verschiebbar ist.
  6. Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß ein Kastenträger (32; 432) mit zwei, jeweils eine Ausstoßdüse (34; 434) tragenden Rohren (33; 433) verbunden ist, wobei jedes dieser Rohre durch den genannten Kastenträger jeweils an einem seiner Enden hindurchgeht.
  7. Vorrichtung nach einem der Ansprüche 4 bis 6, dadurch gekennzeichnet, daß ein Kastenträger (22; 422) wenigstens eine Düse (23; 423) trägt und sich auf einem feststehenden Rohr (20; 420) verschieben läßt, das durch ihn an wenigstens einem seiner Enden hindurchgeht.
  8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß ein Kastenträger (22; 302; 422) über seine Länge verteilt wenigstens zwei Düsen (303; 423) umfaßt.
  9. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß ein Kastenträger (22; 302; 422) eine Düse (23; 303; 423) nahe jedem seiner Enden umfaßt.
  10. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß sich ein Rohr (20; 301; 420) von einem Ende eines Kastenträgers (22; 302; 422) zum anderen erstreckt.
  11. Vorrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß sie wenigstens zwei Abgaberampen (18, 19; 418, 419) umfaßt, von denen eine (18, 418) eine Hauptabgaberampe ist, die eine Abgabe über annähernd die Breite der fahrbaren Maschine gestattet, wobei die andere (19, 419) eine seitliche Abgaberampe auf der Seite der Hauptbreite der Maschine (1) ist.
  12. Vorrichtung nach Anspruch 11 mit einem der Ansprüche 7 bis 10, dadurch gekennzeichnet, daß die Hauptabgaberampe (18, 418) ein feststehendes Rohr (20; 420), das sich annähernd auf einer ganzen Breite der fahrbaren Maschine (1) erstreckt, und einen Kastenträger (22; 422) umfaßt, der wenigstens eine Düse (23; 423) trägt und auf dem genannten feststehenden Rohr (20; 420) verschiebbar ist.
  13. Vorrichtung nach einem der Ansprüche 11 oder 12 in Kombination mit einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß die seitliche Abgaberampe (19, 419) wenigstens einen feststehenden Kastenträger (32; 432) umfaßt, der sich in einer Breite der fahrbaren Maschine (1) erstreckt und mit wenigstens einem Düsen (34; 434) tragenden Rohr (33; 433) verbunden ist, das aus dem genannten Kastenträger (32; 432) an dessen einem Ende herauskommt und in bezug auf den genannten Kastenträger (32, 432) verschiebbar ist.
  14. Vorrichtung nach einem der Ansprüche 5 oder 6, dadurch gekennzeichnet, daß sie zwei feststehende Kastenträger (101, 102; 201, 202) umfaßt, die sich in verschobener Form jeweils über annähernd eine halbe Breite der Maschine (1) erstrecken und jeweils mit einem verschiebbaren, Düsen (105, 106; 205, 206) tragenden Rohr (103, 104; 203, 204) verbunden sind, das aus dem Kastenträger, mit dem es verbunden ist, auf der Höhe der halben Breite des anderen Kastenträgers herauskommt.
  15. Vorrichtung nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, daß die abzugebende Substanz in den Antriebsmitteln als Hydraulikflüssigkeit benutzt wird.
  16. Vorrichtung nach den Ansprüchen 4 und 15, dadurch gekennzeichnet, daß ein Rohr (420, 433), das fähig ist, eine Relativbewegung der Verschiebung in bezug auf einen Kastenträger (422, 432) zu gestatten, mit einem Kolben (460, 481, 482) verbunden ist, der in dem genannten Kastenträger zwei Kammern (461, 462, 479A, 479B, 480A, 480B) abgrenzt, die jeweils mit der abzugebenden Substanz gespeist werden, wobei der Druck der genannten Substanz in diesen beiden Kammern (461, 462, 479A, 479B, 480A, 480B) in der Weise geregelt wird, daß das genannte Rohr (420, 433) unter der Wirkung des Differentialdrucks, der auf den genannten Kolben (460, 481, 482) wirkt, zur Verschiebung angetrieben wird.
  17. Vorrichtung nach Anspruch 16, dadurch gekennzeichnet, daß das Rohr (420, 433) Verbindungsöffnungen (467; 468; 489) zu jeder der beiden von dem Kolben (460; 481, 482) in dem Kastenträger (422, 432) abgegrenzten Kammern (461, 462, 479A, 479B, 480A, 480B) umfaßt.
  18. Vorrichtung nach Anspruch 17, in dem Fall, in dem das Rohr (420) feststehend ist, wobei der Kastenträger (422) wenigstens eine Ausstoßdüse (432) trägt und speist, dadurch gekennzeichnet, daß das Rohr mit jeder der beiden Kammern (461, 462) über zwei Teile in Verbindung steht, die voneinander in dichter Weise getrennt und jeweils mit dem Zufuhrsystem verbunden sind.
  19. Vorrichtung nach Anspruch 17, in dem Fall, in dem der Kastenträger (432) feststehend ist, wobei das Rohr (433) eine Ausstoßdüse (434) trägt und speist, dadurch gekennzeichnet, daß das Rohr mit wenigstens einer Verschlußklappe (490) verbunden ist, die dazu bestimmt ist, die Verbindungsöffnung des genannten Rohrs mit derjenigen der beiden Kammern des Kastenträgers, in welcher der Druck der Substanz der niedrigste ist, zu verschließen.
  20. Vorrichtung nach einem der Ansprüche 16 bis 19, dadurch gekennzeichnet, daß ein Kastenträger (422, 479; 480) mit zwei Umkehrventilen (469, 470, 485, 486) verbunden ist, wobei jede Kammer des genannten Kastenträgers mit einem Röhrensystem (465, 466; 483A, 483B, 484A, 484B) für den Fluß und den Rückfluß der Substanz verbunden ist, wobei jedes dieser beiden Ventile mit jedem dieser beiden Röhrensysteme verbunden ist und auch mit einem Zufuhrröhrensystem (475) für die unter Druck stehende Substanz verbunden ist, wobei das eine (470: 486) der Ventile das Zufuhrröhrensystem für die Substanz mit dem Röhrensystem für den Fluß und den Rückfluß verbindet, das mit derjenigen der beiden Kammern des Kastenträgers verbunden ist, in welcher der Druck der Substanz der stärkste ist, wobei das andere (469, 485) der beiden Ventile, das mit der anderen der beiden Kammern verbundene Röhrensystem mit einem Rücklaufröhrensystem (476, 487) zu dem Zufuhrröhrensystem für die Substanz verbindet.
  21. Vorrichtung nach Anspruch 20, dadurch gekennzeichnet, daß das Rücklaufröhrensystem (476, 487) zum Zufuhrröhrensystem (475) für die Substanz wenigstens ein Ablaß- (477, 488) und/oder Druckregulierungs(478)ventil umfaßt.
  22. Vorrichtung nach einem der Ansprüche 20 und 21, dadurch gekennzeichnet, daß die mit einem Kastenträger verbundenen Ventile (309; 310; 469, 470; 485; 486) Servo-Ventile sind, die sich automatisch am Ende des Ganges der Ausstoßdüse(n) umkehren.
  23. Vorrichtung nach einem der Ansprüche 1 bis 22, dadurch gekennzeichnet, daß die Antriebsmittel wenigstens einen Hydraulikzylinder (30, 40) umfassen.
  24. Vorrichtung nach einem der Ansprüche 1 bis 23, dadurch gekennzeichnet, daß die Antriebsmittel einen Motor (116) umfassen, der eine Zahnstange (114) antreibt.
  25. Vorrichtung nach Anspruch 24, dadurch gekennzeichnet, daß der Motor (116) ein Hydromotor ist.
  26. Vorrichtung nach einem der vorangehenden Ansprüche in Kombination mit Anspruch 4, dadurch gekennzeichnet, daß ein Rohr und ein Kastenträger bei ihrer relativen Verschiebung mittels eines Kolbens (38, 304, 481, 482), der mit dem genannten Rohr verbunden und im Inneren des genannten Kastenträgers angeordnet ist, wobei der Kolben mit den Innenflächen des genannten Kastenträgers zusammenarbeitet, und/oder einer Muffe (43) geführt werden, die mit dem Rohr verbunden und ausserhalb des Kastenträgers angeordnet ist, wobei die Innenflächen der genannten Muffe auf den Außenflächen des genannten Kastenträgers verschiebbar sind.
  27. Vorrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß eine Ausstoßdüse (34; 434) mit einem Ventil (36; 436) verbunden ist, das gestattet, sein Verschliessen zu steuern.
  28. Vorrichtung nach einem der Ansprüche 1 bis 27, dadurch gekennzeichnet, daß eine Ausstoßdüse (23; 34; 423, 434) mit von Druck austarierten Verschlüssen (24, 35; 424, 435) verbunden ist.
  29. Vorrichtung nach einem der Ansprüche 1 bis 28, dadurch gekennzeichnet, daß der Strahl (52) der eine Ausstoßdüse verlassenden Substanz am Boden eine beträchtliche Komponente in der Bewegungsrichtung der fahrbaren Maschine hat.
  30. Vorrichtung nach einem der Ansprüche 1 bis 29, dadurch gekennzeichnet, daß die Bewegung der Düse(n) der Geschwindigkeit und/oder der Bewegung der fahrbaren Maschine unterworfen ist.
  31. Straßenbaumaschine vom Fertigertyp, die auf einem auf Fortbewegungsmitteln (2) angebrachten Fahrgestell Mittel (5) zur Abgabe bituminösen Mischguts und Mittel zur Speisung (4) der genannten Abgabemittel (5) umfaßt, dadurch gekennzeichnet, daß sie eine Vorrichtung (7) zur Abgabe eines Haftklebers für das genannte Mischgut auf die Oberfläche einer Straße gemäß einem der Ansprüche 1 bis 29 umfaßt.
  32. Maschine nach Anspruch 31, dadurch gekennzeichnet, daß die Vorrichtung (7) zur Abgabe eines Haftklebers in bezug auf die Bewegungsrichtung der Maschine bei der Abgabe des Mischguts hinten angeordnet ist.
  33. Maschine nach Anspruch 32, dadurch gekennzeichnet, daß die Vorrichtung (7) zur Abgabe eines Haftklebers zwischen den Fortbewegungsmitteln (2) der genannten Maschine und den Mitteln (5) zur Abgabe des bituminösen Mischguts angeordnet ist.
  34. Maschine nach Anspruch 33, dadurch gekennzeichnet, daß die Vorrichtung (7) zur Abgabe eines Haftklebers unter dem Teil der Zufuhrmittel angeordnet ist, der sich in bezug auf die Bewegungsrichtung der Maschine bei der Abgabe des Mischguts am hinteren Teil des Fahrgestells befindet.
  35. Maschine nach Anspruch 34, bei der die Zufuhrmittel ein Zufuhrband umfassen, das gestattet, die Materialien von einem Bereich nahe dem Vorderteil der genannten Maschine zu einem Bereich nahe ihrem hinteren Teil zu befördern, dadurch gekennzeichnet, daß das genannte Zufuhrband an seinem hinteren Teil über den Mitteln (7) zur Abgabe eines Haftklebers merklich hochgezogen und/oder geneigt ist.
  36. Maschine nach einem der Ansprüche 31 bis 35, die ein Führerhaus (3) umfaßt, dadurch gekennzeichnet, daß sie ein Reservoir (13) für die Emulsion umfaßt, das auf dem Führerhaus (3) angebracht ist.
  37. Maschine nach Anspruch 36, dadurch gekennzeichnet, daß ein Reservoir (13) ein austauschbares Reservoir ist und auf Hydraulikzylinder(n) (14) auf regulierbarer Höhe angebracht ist.
  38. Maschine nach einem der Ansprüche 31 bis 37, dadurch gekennzeichnet, daß sie eine Dosiereinheit (17) für die Emulsion umfaßt, die eine Dosierpumpe für die Düse(n) der Abgabevorrichtung umfaßt.
  39. Maschine nach einem der Ansprüche 31 bis 38, dadurch gekennzeichnet, daß sie Mittel umfaßt, die es gestatten, den Haftkleber wiederzuerwärmen oder bei einer Temperatur von ungefähr 80°C zu halten.
  40. Maschine nach einem der Ansprüche 31 bis 39, dadurch gekennzeichnet, daß die Vorrichtung (7) zur Abgabe eines Haftklebers von dem Fahrgestell der genannten Maschine trennbar ist.
  41. Verwendung der Vorrichtung nach einem der Ansprüche 1 bis 30 für die gleichzeitige Abgabe einer wasserhaltigen Bitumenemulsion und von Demulgierungsmittel(n).
  42. Verwendung der Maschine nach einem der Ansprüche 31 bis 40 für die gleichzeitige Abgabe einer wasserhaltigen Bitumenemulsion und von Demulgierungsmittel(n).
EP91401040A 1990-05-21 1991-04-18 Vorrichtung zur Ausbreitung flüssigen Materials oder dgl., insbesondere einer Haftemulsion für bituminöses Mischgut auf die Strassenoberfläche, und Strassenbaumaschine, insbesondere Strassenfertiger mit einer derartigen Vorrichtung Expired - Lifetime EP0458667B1 (de)

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FR9006306A FR2662193B1 (fr) 1990-05-21 1990-05-21 Dispositif d'epandage d'un materiau fluide, notamment d'une emulsion d'accrochage d'enrobes bitumineux et machine de construction de chaussees comportant un tel dispositif.
FR9006306 1990-05-21

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DK0458667T3 (da) 1994-06-27
DE69101176D1 (de) 1994-03-24
US5324136A (en) 1994-06-28
DE69101176T2 (de) 1994-10-06
EP0458667A1 (de) 1991-11-27
ES2051088T3 (es) 1994-06-01
ATE101672T1 (de) 1994-03-15
FR2662193A1 (fr) 1991-11-22

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