EP0180687B1 - Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings - Google Patents

Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings Download PDF

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Publication number
EP0180687B1
EP0180687B1 EP84810532A EP84810532A EP0180687B1 EP 0180687 B1 EP0180687 B1 EP 0180687B1 EP 84810532 A EP84810532 A EP 84810532A EP 84810532 A EP84810532 A EP 84810532A EP 0180687 B1 EP0180687 B1 EP 0180687B1
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EP
European Patent Office
Prior art keywords
mastic asphalt
asphalt
distance
rollers
roll
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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.)
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EP84810532A
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German (de)
French (fr)
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EP0180687A1 (en
Inventor
Heinz Aeschlimann
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Oskar Aeschlimann AG
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Oskar Aeschlimann AG
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Priority to AT84810532T priority Critical patent/ATE42361T1/en
Priority to DE8484810532T priority patent/DE3477821D1/en
Priority to EP84810532A priority patent/EP0180687B1/en
Publication of EP0180687A1 publication Critical patent/EP0180687A1/en
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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
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/29—Rolling apparatus adapted to apply a rolling pressure less than its weight, e.g. roller finishers travelling on formrail combined with spread-out, strike-off or smoothing means; Rolling elements with controlled penetration or a controlled path of movement in a vertical plane, e.g. controlled by the formrails, by guides ensuring a desired configuration of the rolled surface
    • 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
    • E01C19/4806—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 with solely rollers for consolidating or finishing
    • E01C19/4813—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 with solely rollers for consolidating or finishing the materials being simultaneously but separately applied binders and granular or pulverulent material

Definitions

  • the present invention relates to a method according to the preamble of claim 1.
  • Such a method is specified in BITUMEN, volume 31, number 7, 1969, pages 200 and 201, but only the importance of the height of the smooth wheel rollers above the manufactured asphalt surface becomes. However, it turns out that this does not meet all the essential requirements for an optimal result.
  • the aim of the present invention is to provide optimal conditions for the creation of a mastic asphalt covering and in particular the rolling in of a granulate in the same, i.e. to avoid unevenness and irregularities in the covering structure and to roll the granulate well adhering but uniformly over the surface of the asphalt covering above.
  • This goal is achieved by the measures according to the characterizing part of claim 1. Because a rolling device rolls the granulate over the entire width of the covering at the same time, based on the point in time at which the covering was created, an optimal choice of this point in time, i.e. by appropriate choice of the distance between the paver and the rollers, a correspondingly optimal flatness and uniformity of the surface structure can be achieved. It is preferable to work with rollers which are so heavy that they will surely press all particles of the granulate into the asphalt surface.
  • the invention also relates to a system according to claim 5.
  • the mastic asphalt paver 1 is indicated schematically in FIG. It is movably supported on rails 2, which are laid on both sides along the surface to be provided with the asphalt surface.
  • the paver 1 has, on the right side in FIG. 1, a screed lying transversely between the rails 2, which distributes the mastic asphalt evenly over the entire width of the track to be created and determines the level of the flat surface of the mastic asphalt surface.
  • a scattering device also not shown, for a granulate, for example grit or sand or a suitable mixture of particles.
  • the rolling device 3 of the system is located at a certain, adjustable distance behind the paver 1. It is designed as a carriage with a frame 4 which is supported by wheels 5 on the same rails 2 as the paver 1.
  • the rear frame part of the carriage stiffened to an actual rigid support 6, which is rigidly supported on the rear wheels of the car. This frame is thus at a rigid distance above the rails 2 and thus above the poured asphalt covering.
  • Flags 7, which are pivotably connected to flags 8, are welded to the lower belt 6a of the carrier 6.
  • Cranks 9 are rotatable, but secured against longitudinal displacement, mounted on the flags 8, the shaft of which is designed at the bottom as a spindle 10 which engages in a nut.
  • This nut lies between two strips with a row of holes and can be anchored between these strips by means of a bolt in a selectable position.
  • the perforated strips 11 are connected to a lower support which has longitudinal spars 12 and transverse webs connecting the spars 12 in the region of the perforated strips.
  • Downwardly projecting bearing lugs 13 are connected to both spars 12, and a roller 14 is mounted between each two pairs of such bearing lugs.
  • the lower carrier with the spars 12 and the rollers 14 is suspended from the carrier 6 by means of a suitable number of uniform spindles 10 distributed along the carriage, so that the lower carrier with the spars 12 are considered to be quasi rigidly connected to the upper carrier 6 can, that is, the suspension and mounting of the rollers 14 can be regarded as practically rigid, for example on the level of the rails 2.
  • the height of the rollers with respect to the support of the carriage on the rails 2 can, however, be adjusted by means of the spindles.
  • Each spindle can be locked individually in the position it has reached, so that once the height of the rollers has been set in the area of this spindle cannot change.
  • the rollers 14 overlap somewhat in the direction of their axes, so that a uniform rolling effect is ensured over the entire length of the carriage.
  • the effective length of the carriage can be changed by removing rollers and / or partially replacing them with shorter rollers in the edge areas.
  • the frame of the rolling device is stiffened by tie rods 15 and 16, which connect the front longitudinal spar of the frame to the lower support on the one hand and to the upper support 6 on the other.
  • the lower beam is thus practically rigidly connected to the carriage frame in the direction of travel, i.e. in any case, the rolling resistance of the rollers 14 does not have to be transmitted to the same via the spindles 10.
  • the rolling device 3 is usually coupled directly to the paver 1.
  • a coupling is schematically indicated in FIG. 1 by means of a length-adjustable belt 17.
  • the rolling device 3 is thus pulled at a certain adjustable distance from the paver 1.
  • the paver moves in the usual way to the right in FIG. 1 at a certain speed.
  • 1 granulate, for example grit, is sprinkled on the freshly created, very hot topping.
  • the rollers 14 are used and roll the granules to a certain depth given by their position in the still plastic asphalt surface. According to previous experience, the rollers 14 are set to such a level that they are about 2 mm above the surface of the asphalt surface. After rolling in, the particles of the granules will still protrude from the coating by about 2 mm.
  • the setting can of course also be different depending on the granules used. Since the rolling is no longer done by a roller, which largely determines the rolling process by its own weight, but a firmly supported rolling device is used, the rolling in can take place when the mastic asphalt is much hotter than in the conventional methods described above. It is therefore possible to work at temperatures substantially higher than 140 ° C, for example at 180 ° C to 200 ° C. These temperatures are only to be understood as an example.
  • thermocouples in the area of the rollers, which determine the temperature of the coating and which, by means of a suitable servo control, reduce or increase the distance between the finisher 1 and the rolling device 3, depending.
  • the design of the rolling device 3 as a separate unit has the advantage that the distance between the rollers 14 and the paver 1 or its screed can be chosen within wide limits and that the rollers are supported securely and practically rigidly on the rails 2 or corresponding carriageways , is possible. However, it is not excluded to mount the rolling device directly on the paver 1 or to design the paver and the rolling device as a single machine unit in which the distance between the screed and the rolls can be set within certain limits.
  • the embodiment shown has the advantage, among other things, that the rolling device is pulled by the paver 1 and therefore does not require its own drive.
  • the rolling device could also be provided with its own drive, and its distance from the paver could, for example in the above-mentioned sense, be controlled depending on the coating temperature in the area of the rollers 14.

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

Abstract

1. Method for spreading surfacings of mastic asphalt, the mastic asphalt being continuously produced with a flat surface in a path of determined width, a granulated material like crushed stone or sand is spread on the still soft mastic asphalt and the latter is rolled in at the same time on the whole width of the surfacing by means of a roll in device with levelling rollers held at a determined distance above the surface of mastic asphalt and adjusted to a determined distance from the working place by means of the production device, the particles of the granulated material still weakly projecting from the surfacing after the roll in, characterized in that the granulated material is rolled in by means of a plurality of levelling rollers located along the width of the path, the distance of which above the surface of mastic asphalt is adjusted at many places distributed along the width of the path by the adjustment of their suspension at a rigid support located above and which are adjusted at a selected, adjustable distance from the working place as a function of the temperature of the mastic asphalt.

Description

Die vorliegende Erfindung betrifft ein Verfahren gemäss Oberbegriff des Anspruchs 1. Ein solches Verfahren ist in BITUMEN, Band 31, Nr. 7, 1969, Seiten 200 und 201, angegeben, wobei aber nur auf die Bedeutung der Höhenlage der Glattradwalzen über dem gefertigten Asphaltbelag hingewiesen wird. Es zeigt sich jedoch, dass damit nicht alle wesentlichen Voraussetzungen für ein optimales Ergebnis erfüllt sind.The present invention relates to a method according to the preamble of claim 1. Such a method is specified in BITUMEN, volume 31, number 7, 1969, pages 200 and 201, but only the importance of the height of the smooth wheel rollers above the manufactured asphalt surface becomes. However, it turns out that this does not meet all the essential requirements for an optimal result.

Es ist aus der DE-C-840 562 auch bekannt, eine Glattradwalze in vorgegebenem Abstand hinter dem Fertiger nachzuführen und mit ihrem Eigengewicht das Granulat einzuwalzen. Damit sind auch nicht optimale Einwalzbedingungen erzielbar.It is also known from DE-C-840 562 to track a smooth wheel roller at a predetermined distance behind the paver and to roll the granulate in with its own weight. This means that optimal rolling-in conditions can also be achieved.

Es ist auch bekannt, ein Granulat mittels Rillenwalzen einzuwalzen, welche den Gussasphaltbelag verformen (DE-B-1 658 544). Es ist praktisch unmöglich, mit diesem Vorgehen das Granulat so einzuwalzen, dass es zur Aufrauhung der Belagsoberfläche teils über dieselbe vorsteht und doch hinreichend im Belag verankert ist.It is also known to roll in a granulate by means of grooved rollers which deform the mastic asphalt surface (DE-B-1 658 544). It is practically impossible to use this procedure to roll the granulate in such a way that it partially protrudes over the surface to roughen it and yet is sufficiently anchored in the surface.

Es ist ferner aus der DE-B-1 124 074 bekannt, einen Gussasphaltbelag mittels Stachelwalzen aufzurauhen, die in einstellbarer Höhe starr über der Belagsoberfläche geführt sind. Auch damit ist aber kein optimales Vorgehen zum Einwalzen von Granulat mittels Glattradwalzen vorgegeben. Da nämlich die Gussasphaltmasse immer härter eingestellt wird, treten erhebliche Probleme bezüglich des richtigen Zeitpunkts bzw. der richtigen Konsistenz des Belags zum Einwalzen des Granulats auf. Wird die Abwalzung zu früh und damit bei noch zu hoher GussasphaltTemperatur vorgenommen, treten in der Belagsschicht Deformationen auf. Bei unterschiedlichen Belagsstärken zeigen sich ausserdem in der im Walzzustand noch plastischen Gussasphaltmasse unregelmässige Eindrücke. Eine zu späte Einwalzung des Granulats kann eine ungenügende Verankerung bewirken während ein zu frühes Einwalzen das Granulat zu tief in den Gussasphalt eindrückt, was wiederum zu glatten Stellen, sogenannten "Glatzen" im Belag führt.It is also known from DE-B-1 124 074 to roughen a mastic asphalt surface by means of spiked rollers which are guided at an adjustable height rigidly above the surface of the surface. However, even this does not prescribe an optimal procedure for rolling in granulate by means of smooth wheel rollers. Because the mastic asphalt mass is set ever harder, considerable problems arise with regard to the correct time or the correct consistency of the surface for rolling in the granulate. If the rolling is carried out too early and therefore at too high a mastic asphalt temperature, deformations occur in the surface layer. With different pavement thicknesses, irregular impressions are also evident in the cast asphalt mass, which is still plastic when rolled. Rolling in the granulate too late can result in insufficient anchoring, while rolling it in too early pushes the granulate too deep into the poured asphalt, which in turn leads to smooth spots, so-called "balding" in the pavement.

Ziel vorliegender Erfindung ist es, für die Erstellung eines Gussasphaltbelages und insbesondere das Einwalzen eines Granulates in denselben, optimale Bedingungen anzugeben, d.h., Unebenheiten und Unregelmässigkeiten in der Belagsstruktur zu vermeiden und das Granulat gut haftend aber gleichmässig über die Oberfläche des Asphaltbelags vorstehend einzuwalzen. Dieses Ziel wird durch die Massnahmen nach dem Kennzeichen des Anspruchs 1 erreicht. Dadurch dass eine Walzvorrichtung auf der ganzen Belagsbreite im gleichen Zeitpunkt bezogen auf den Zeitpunkt der Entstehung des Belages das Granulat einwalzt, kann durch optimale Wahl dieses Zeitpunktes, d.h. durch entsprechende Wahl des Abstandes zwischen dem Fertiger und den Walzen, eine entsprechend optimale Ebenheit und Gleichmässigkeit der Oberflächenstruktur erreicht werden. Vorzugsweise wird dabei mit Walzen gearbeitet, welche ein derart hohes Gewicht aufweisen, dass sie mit Sicherheit alle Partikel des Granulats in die Asphaltoberfläche eindrücken.The aim of the present invention is to provide optimal conditions for the creation of a mastic asphalt covering and in particular the rolling in of a granulate in the same, i.e. to avoid unevenness and irregularities in the covering structure and to roll the granulate well adhering but uniformly over the surface of the asphalt covering above. This goal is achieved by the measures according to the characterizing part of claim 1. Because a rolling device rolls the granulate over the entire width of the covering at the same time, based on the point in time at which the covering was created, an optimal choice of this point in time, i.e. by appropriate choice of the distance between the paver and the rollers, a correspondingly optimal flatness and uniformity of the surface structure can be achieved. It is preferable to work with rollers which are so heavy that they will surely press all particles of the granulate into the asphalt surface.

Die Erfindung betrifft auch eine Anlage gemäss Anspruch 5.The invention also relates to a system according to claim 5.

Vorteilhafte Ausbildungen der Erfindung sind in den abhängigen Ansprüchen beschrieben.Advantageous embodiments of the invention are described in the dependent claims.

Die Erfindung wird nun anhand der Zeichnung näher erläutert.

  • Figur 1 zeigt eine Seitenansicht der Anlage und
  • Figur 2 zeigt eine perspektivische Ansicht der Walzvorrichtung.
The invention will now be explained in more detail with reference to the drawing.
  • Figure 1 shows a side view of the system and
  • Figure 2 shows a perspective view of the rolling device.

In Figur 1 ist der Gussasphalt-Fertiger 1 schematisch angedeutet. Er ist fahrbar auf Schienen 2 abgestützt, die beidseitig längs der mit dem Asphaltbelag zu versehenden Fläche verlegt sind. Der Fertiger 1 weist an der in Figur 1 rechts liegenden Vorderseite eine quer zwischen den Schienen 2 liegende Bohle auf, welche den Gussasphalt über die ganze Breite der zu erstellenden Bahn des Belages gleichmässig verteilt und das Niveau der ebenen Oberfläche des Gussasphaltbelages bestimmt. Im Hinterteil des Fertigers 1 befindet sich eine ebenfalls nicht dargestellte Streuvorrichtung für ein Granulat, beispielsweise Splitt oder Sand oder ein geeignetes Gemisch von Partikeln.The mastic asphalt paver 1 is indicated schematically in FIG. It is movably supported on rails 2, which are laid on both sides along the surface to be provided with the asphalt surface. The paver 1 has, on the right side in FIG. 1, a screed lying transversely between the rails 2, which distributes the mastic asphalt evenly over the entire width of the track to be created and determines the level of the flat surface of the mastic asphalt surface. In the rear of the paver 1 there is a scattering device, also not shown, for a granulate, for example grit or sand or a suitable mixture of particles.

Die Walzvorrichtung 3 der Anlage befindet sich in einem bestimmten, einstellbaren Abstand hinter dem Fertiger 1. Sie ist als Wagen mit einem Rahmen 4 ausgebildet, welcher mittels Rädern 5 auf die gleichen Schienen 2 gestützt ist wie der Fertiger 1. Der hintere Rahmenteil des Wagens ist zu einem eigentlichen starren Träger 6 versteift, der starr auf die Hinterräder des Wagens abgestützt ist. Dieser Rahmen befindet sich somit in einem starren Abstand über den Schienen 2 und somit über dem erstellten Gussasphaltbelag.The rolling device 3 of the system is located at a certain, adjustable distance behind the paver 1. It is designed as a carriage with a frame 4 which is supported by wheels 5 on the same rails 2 as the paver 1. The rear frame part of the carriage stiffened to an actual rigid support 6, which is rigidly supported on the rear wheels of the car. This frame is thus at a rigid distance above the rails 2 and thus above the poured asphalt covering.

Am unteren Gurt 6a des Trägers 6 sind Fahnen 7 angeschweisst, welche schwenkbar mit Fahnen 8 verbunden sind. An den Fahnen 8 sind Handkurbeln 9 drehbar, aber gegen Längsverschiebung gesichert, gelagert, deren Welle unten als Spindel 10 ausgebildet ist, die in eine Nuss greift. Diese Nuss liegt zwischen zwei mit einer Lochreihe versehenen Leisten und kann zwischen diesen Leisten mittels eines Bolzens in wählbarer Stellung verankert werden. Die gelochten Leisten 11 sind mit einem unteren Träger verbunden, welche Längsholme 12 und im Bereiche der gelochten Leisten die Holme 12 verbindende Querstege aufweist. Mit beiden Holmen 12 sind abwärtsragende Lagerfahnen 13 verbunden, und zwischen je zwei Paaren solcher Lagerfahnen ist je eine Walze 14 gelagert. Es handelt sich um Metallwalzen erheblichen Gewichts, die so bemessen sind, dass sie bereits mit ihrem Eigengewicht das Granulat in den Gussasphalt einwalzen können. Der untere Träger mit den Holmen 12 und den Walzen 14 ist mittels einer geeigneten Anzahl von gleichmässig, längs des Wagens verteilten Spindeln 10 am Träger 6 aufgehängt, so dass der untere Träger mit den Holmen 12 als quasi starr mit dem oberen Träger 6 verbunden betrachtet werden kann, d.h. die Aufhängung und Lagerung der Walzen 14 kann als praktisch starr bezogen, beispjelsweise auf das Niveau der Schienen 2 betrachtet werden. Die Höhe der Walzen bezüglich der Abstützung des Wagens auf den Schienen 2 ist jedoch mittels der Spindeln einstellbar. Jede Spindel kann einzeln in der erreichten Stellung blockiert werden, damit eine einmal eingestellte Höhe der Walzen im Bereiche dieser Spindel sich nicht verändern kann. Wie besonders Figur 2 erkennen lässt, überlappen sich die Walzen 14 in Richtung deren Achsen etwas, so dass für eine gleichmässige Walzwirkung über die ganze Länge des Wagens gesorgt ist. Die wirksame Länge des Wagens kann verändert werden, indem Walzen entfernt und/oder teilwelse durch kürzere Walzen im Randbereiche ersetzt werden.Flags 7, which are pivotably connected to flags 8, are welded to the lower belt 6a of the carrier 6. Cranks 9 are rotatable, but secured against longitudinal displacement, mounted on the flags 8, the shaft of which is designed at the bottom as a spindle 10 which engages in a nut. This nut lies between two strips with a row of holes and can be anchored between these strips by means of a bolt in a selectable position. The perforated strips 11 are connected to a lower support which has longitudinal spars 12 and transverse webs connecting the spars 12 in the region of the perforated strips. Downwardly projecting bearing lugs 13 are connected to both spars 12, and a roller 14 is mounted between each two pairs of such bearing lugs. There are significant metal rollers Weights that are dimensioned such that they can roll the granulate into the mastic asphalt with their own weight. The lower carrier with the spars 12 and the rollers 14 is suspended from the carrier 6 by means of a suitable number of uniform spindles 10 distributed along the carriage, so that the lower carrier with the spars 12 are considered to be quasi rigidly connected to the upper carrier 6 can, that is, the suspension and mounting of the rollers 14 can be regarded as practically rigid, for example on the level of the rails 2. The height of the rollers with respect to the support of the carriage on the rails 2 can, however, be adjusted by means of the spindles. Each spindle can be locked individually in the position it has reached, so that once the height of the rollers has been set in the area of this spindle cannot change. As can be seen particularly in FIG. 2, the rollers 14 overlap somewhat in the direction of their axes, so that a uniform rolling effect is ensured over the entire length of the carriage. The effective length of the carriage can be changed by removing rollers and / or partially replacing them with shorter rollers in the edge areas.

Der Rahmen der Walzvorrichtung ist versteift durch Zugstangen 15 und 16, welche den vorderen Längsholm des Rahmens mit dem unteren Träger einerseits und mit dem oberen Träger 6 anderseits verbinden. Der untere Träger ist damit auch in Fahrtrichtung praktisch starr mit dem Wagenrahmen verbunden, d.h. der Rollwiderstand der Walzen 14 muss jedenfalls nicht über die Spindeln 10 an dieselben übertragen werden.The frame of the rolling device is stiffened by tie rods 15 and 16, which connect the front longitudinal spar of the frame to the lower support on the one hand and to the upper support 6 on the other. The lower beam is thus practically rigidly connected to the carriage frame in the direction of travel, i.e. in any case, the rolling resistance of the rollers 14 does not have to be transmitted to the same via the spindles 10.

Die Walzvorrichtung 3 ist üblicherweise direkt mit dem Fertiger 1 gekuppelt. In Figur 1 ist schematisch eine Kupplung mittels eines in der Länge verstellbaren Gurtes 17 angedeutet. Die Walzvorrichtung 3 wird damit in einem bestimmten einstellbaren Abstand vom Fertiger 1 nachgezogen.The rolling device 3 is usually coupled directly to the paver 1. A coupling is schematically indicated in FIG. 1 by means of a length-adjustable belt 17. The rolling device 3 is thus pulled at a certain adjustable distance from the paver 1.

Die Arbeitsweise der Anlage ergibt sich weitgehend aus der vorstehenden Beschreibung. Während des Aufbringens des Belags bewegt sich der Fertiger in üblicher Weise mit einer bestimmten Geschwindigkeit nach rechts in Figur 1. Auf den frisch erstellten, noch sehr heissen Belag wird im Fertiger 1 Granulat, beispielsweise Splitt, gestreut. Nach einer gewissen, durch den Abstand der Walzvorrichtung 3 vom Fertiger 1 und die Fahrgeschwindigkeit der beiden Aggregate bestimmten Zeit, gelangen die Walzen 14 zum Einsatz und walzen das Granulat auf eine bestimmte durch ihre Stellung gegebene Tiefe in den noch plastischen Asphaltbelag ein. Nach den bisherigen Erfahrungen werden die Walzen 14 auf ein solches Niveau eingestellt, dass sie sich etwa 2 mm über der Oberfläche des Asphaltbelages befinden. Nach dem Einwalzen werden also die Partikel des Granulates noch um etwa 2 mm aus dem Belag vorstehen. Die Einstellung kann aber selbstverständlich je nach verwendetem Granulat auch eine andere sein. Da das Einwalzen nicht mehr durch eine Walze geschieht, die den Walzvorgang weitgehend durch ihr Eigengewicht bestimmt, sondern eine fest abgestützte Walzvorrichtung benützt wird, kann das Einwalzen bei wesentlich heisserem Zustand des Gussasphaltes erfolgen als bei den oben beschriebenen üblichen Verfahren. Es kann also bei wesentlich höheren Temperaturen als 140°C gearbeitet werden, beispielsweise bei 180°C bis 200°C. Auch diese Temperaturangaben sind nur als Beispiel aufzufassen.The operation of the system results largely from the above description. While the covering is being applied, the paver moves in the usual way to the right in FIG. 1 at a certain speed. 1 granulate, for example grit, is sprinkled on the freshly created, very hot topping. After a certain time, determined by the distance of the roller device 3 from the paver 1 and the driving speed of the two units, the rollers 14 are used and roll the granules to a certain depth given by their position in the still plastic asphalt surface. According to previous experience, the rollers 14 are set to such a level that they are about 2 mm above the surface of the asphalt surface. After rolling in, the particles of the granules will still protrude from the coating by about 2 mm. The setting can of course also be different depending on the granules used. Since the rolling is no longer done by a roller, which largely determines the rolling process by its own weight, but a firmly supported rolling device is used, the rolling in can take place when the mastic asphalt is much hotter than in the conventional methods described above. It is therefore possible to work at temperatures substantially higher than 140 ° C, for example at 180 ° C to 200 ° C. These temperatures are only to be understood as an example.

Das Einwalzen bei höheren Temperaturen erleichtert jedoch nicht nur den Einwalzvorgang an und für sich, sondern die Tatsache, dass das Einwalzen in einen wesentlich weicheren und plastischeren Belag erfolgen kann als bisher, verbessert erheblich die Haftung der Partikel im Belag. Es wird also nicht nur eine völlig ebene und gleichmässig strukturierte Belagsoberfläche erzielt, sondern der Belag ist auch qualitativ überlegen.Rolling in at higher temperatures not only facilitates the rolling process in and of itself, but the fact that the rolling can take place in a much softer and more plastic covering than before, considerably improves the adhesion of the particles in the covering. Not only is a completely flat and evenly structured covering surface achieved, but the covering is also superior in quality.

Es sind verschiedene Abweichungen von der dargestellten Ausführung möglich. An Stelle von Schienen 2 können andere Elemente, z. B. Balken, vorgesehen sein, auf welchen der Fertiger 1 und die Walzvorrichtung 3 fahrbar sind. Normalerweise wird die Distanz zwischen dem Fertiger 1 und der Walzvorrichtung 3 und damit die entscheidende Distanz zwischen der Bohle des Fertigers 1 und den Walzen 14 der Walzvorrichtung 3 für gegebene Verhältnisse einmal fest eingestellt und dann im allgemeinen nicht mehr verändert. Es ist jedoch denkbar, diesen Abstand während der Arbeit dauernd zu regeln, derart, dass das Einwalzen des Granulats stets unter möglichst optimalen Bedingungen stattfindet. Man könnte zu diesem Zwecke im Bereiche der Walzen 14 Thermofühler anbringen, welche die Temperatur des Belages ermitteln und die über eine geeignete Servosteuerung den Abstand zwischen dem Fertiger 1 und der Walzvorrichtung 3 verringern oder erhöhen, je. nachdem ob die ermittelte Belagstemperatur zu niedrig oder zu hoch sei. Entsprechende Einstellungen können natürlich auch von Hand während der Arbeit erfolgen. Die Ausbildung der Walzvorrichtung 3 als separates Aggregat hat den Vorteil, dass der Abstand der Walzen 14 vom Fertiger 1 bzw. dessen Bohle in weiten Grenzen beliebig gewählt werden kann und dass eine sichere, praktisch starr wirkende Abstützung der Walzen auf den Schienen 2 oder entsprechenden Fahrbahnen, möglich ist. Es ist jedoch nicht ausgeschlossen, die Walzvorrichtung direkt am Fertiger 1 anzubauen bzw. den Fertiger und die Walzvorrichtung als eine einzige Maschineneinheit auszubilden, in welcher der Abstand zwischen der Bohle und den Walzen in gewissen Grenzen einstellbar ist. Die dargestellte Ausführung hat unter anderem den Vorteil, dass die Walzvorrichtung vom Fertiger 1 gezogen wird und somit keinen eigenen Antrieb benötigt. Wenn jedoch aus bestimmten Gründen eine mechanische Verbindung zwischen dem Fertiger und der Walzvorrichtung nicht erwünscht oder nicht möglich ist, könnte die Walzvorrichtung auch mit einem eigenen Antrieb versehen werden, und ihr Abstand vom Fertiger könnte, beispielsweise im oben erwähnten Sinne, in Abhängigkeit von der Belagstemperatur im Bereich der Walzen 14 gesteuert werden.Various deviations from the version shown are possible. Instead of rails 2, other elements such. B. beams can be provided on which the paver 1 and the rolling device 3 are mobile. Normally, the distance between the paver 1 and the rolling device 3 and thus the decisive distance between the screed of the paver 1 and the rollers 14 of the rolling device 3 is fixed once for given conditions and then generally no longer changed. However, it is conceivable to regulate this distance continuously during work, in such a way that the granules are always rolled in under the best possible conditions. For this purpose, one could attach 14 thermocouples in the area of the rollers, which determine the temperature of the coating and which, by means of a suitable servo control, reduce or increase the distance between the finisher 1 and the rolling device 3, depending. after whether the surface temperature determined is too low or too high. Corresponding settings can of course also be made by hand during work. The design of the rolling device 3 as a separate unit has the advantage that the distance between the rollers 14 and the paver 1 or its screed can be chosen within wide limits and that the rollers are supported securely and practically rigidly on the rails 2 or corresponding carriageways , is possible. However, it is not excluded to mount the rolling device directly on the paver 1 or to design the paver and the rolling device as a single machine unit in which the distance between the screed and the rolls can be set within certain limits. The embodiment shown has the advantage, among other things, that the rolling device is pulled by the paver 1 and therefore does not require its own drive. However, if for certain reasons a mechanical connection between the paver and the rolling device is not desired or is not possible, the rolling device could also be provided with its own drive, and its distance from the paver could, for example in the above-mentioned sense, be controlled depending on the coating temperature in the area of the rollers 14.

Die vorstehende Beschreibung und die Ansprüche sind auf die Erstellung eines Gussasphaltbelages bezogen, doch soll der Patentschutz sich nicht auf Gussasphalt im engeren Sinne beschränken, sondern für jede Anwendung eines entsprechenden Vorgehens bzw. einer entsprechenden Vorrichtung unter vergleichbaren Voraussetzungen gelten.The above description and the claims refer to the creation of a mastic asphalt covering, but the patent protection should not be limited to mastic asphalt in the narrower sense, but apply to every application of a corresponding procedure or a corresponding device under comparable conditions.

Claims (9)

1. Method for spreading surfacings of mastic asphalt, the mastic asphalt being continuously produced with a flat surface in a path of determined width, a granulated material like crushed stone or sand is spread on the still soft mastic asphalt and the latter is rolled in at the same time on the whole width of the surfacing by means of a roll in device with levelling rollers held at a determined distance above the surface of mastic asphalt and adjusted to a determied distance from the working place by means of the production device, the particles of the granulated material still weakly projecting from the surfacing after the roll in, characterized in that the granulated material is rolled in by means of a plurality of levelling rollers located along the width of the path, the distance of which above the surface of mastic asphalt is adjusted at many places distributed along the width of the path by the adjustment of their suspension at a rigid support located above and which are adjusted at a selected, adjustable distance from the working place as a function of the temperature of the mastic asphalt.
2. Method according to claim 1, characterized in that one rolls in the granulated material by rollers (14) the own weight of which is sufficient for rolling in.
3. Method according to claim 1, characterized in that the granulated material is rolled in at a temperature above 140°C, preferably between 180° and 200° C.
4. Method according to one of the claims 1 to 3, characterized in that the distance between the working place of the mastic asphalt and the rollers (14) is adjusted automatically as a function of the temperature of the mastic asphalt.
5. Installation for spreading surfacings of mastic asphalt according to the method of one of the claims 1 to 4, with a roll in device (3) of the asphalt work (1) producing the surfacing, having adjustable levelling rollers and for rolling in at the same time a granulated material at about a same distance of the asphalt work on the whole width of the surfacing, characterized in that the roll in device (3) comprises an upper rigid support (6) and in that many levelling rollers (14) are suspended rigidly at this support (6) but capable to be shifted in the height by means of adjusting rods (10) distributed along the width of the surfacing, and in that the distance between the working place of the asphalt and the rollers (14) of the roll in device (3) is adjustable.
6. Installation according to claim 5, characterized in that the levelling rollers (14) are coupled rigidly to a lower support (12), the adjusting rods (10) being arranged between the upper support (6) and the lower support (12).
7. Installation according to claim 5 or 6, characterized in that the roll in device (3) and the asphalt work (1) are connected by coupling means, e.g. belts (17) of adjustable length.
8. Installation according to one of the claims 5 to 7, characterized in that the own weight of the rollers (14) is determined for the rolling in of the granulated material.
9. Installation according to one of the claims 5 to 8, characterized in that a servo-control is provided for the adjustment of the distance of the roll in device (3) to the asphalt work (1) as a function of the temperature of the mastic asphalt.
EP84810532A 1984-11-05 1984-11-05 Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings Expired EP0180687B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AT84810532T ATE42361T1 (en) 1984-11-05 1984-11-05 PROCESS AND PLANT FOR APPLICATION OF CHIP GRANULATE IN MAST ASPHALT AND OTHER SURFACES.
DE8484810532T DE3477821D1 (en) 1984-11-05 1984-11-05 Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings
EP84810532A EP0180687B1 (en) 1984-11-05 1984-11-05 Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP84810532A EP0180687B1 (en) 1984-11-05 1984-11-05 Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings

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EP0180687A1 EP0180687A1 (en) 1986-05-14
EP0180687B1 true EP0180687B1 (en) 1989-04-19

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EP84810532A Expired EP0180687B1 (en) 1984-11-05 1984-11-05 Method and apparatus for spreading crushed stone on mastic asphalt and other surfacings

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AT (1) ATE42361T1 (en)
DE (1) DE3477821D1 (en)

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GB9703948D0 (en) * 1997-02-26 1997-04-16 Errut Prod Ltd Fluid surface texturing device
CH692856A5 (en) 1998-01-23 2002-11-29 Aeschlimann Oskar Ag Rail-mounted surface treating apparatus.
ATE496174T1 (en) 2005-06-27 2011-02-15 Hans Weibel Ag Bauunternehmung METHOD AND SURFACE PROCESSING DEVICE FOR PRODUCING A ROAD SURFACE
JP2011521215A (en) 2008-05-14 2011-07-21 エーテーハー チューリヒ Biomarker and drug target discovery method for diagnosis and treatment of prostate cancer, and biomarker assay determined using the same

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Publication number Priority date Publication date Assignee Title
DE840562C (en) * 1948-10-02 1952-06-03 Heinrich Buehrmann Device for applying a road surface, such as mastic asphalt cover or the like.
DE1124074B (en) * 1956-08-01 1962-02-22 Paul Roesler Device for pressing indentations into black pavements that are still plastic, especially mastic asphalt pavements
DE1658544B1 (en) * 1967-10-11 1970-11-19 Strabag Bau Ag Device for pressing gravel into the surface of mastic asphalt pavements

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ATE42361T1 (en) 1989-05-15
EP0180687A1 (en) 1986-05-14

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