EP0316752B1 - Apparatus for reconstructing layers of road surfacings - Google Patents

Apparatus for reconstructing layers of road surfacings Download PDF

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Publication number
EP0316752B1
EP0316752B1 EP88118700A EP88118700A EP0316752B1 EP 0316752 B1 EP0316752 B1 EP 0316752B1 EP 88118700 A EP88118700 A EP 88118700A EP 88118700 A EP88118700 A EP 88118700A EP 0316752 B1 EP0316752 B1 EP 0316752B1
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EP
European Patent Office
Prior art keywords
chassis
machine
crusher
additional
mixing mill
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EP88118700A
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German (de)
French (fr)
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EP0316752A1 (en
Inventor
Urs Egli
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Egli AG
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Egli AG
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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
    • E01C19/02—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 preparing the materials
    • E01C19/025—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 preparing the materials for preparing hydraulic-cement-bound mixtures of which at least one ingredient has previously been deposited on the surface, e.g. in situ mixing of concrete
    • 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
    • E01C19/46—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 preparing and placing the materials, e.g. slurry seals
    • E01C19/463—Bituminous mixtures of which at least part of the solid ingredients has previously been deposited on the surface, e.g. with lifting of spread or windrowed aggregate
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
    • E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
    • E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving

Definitions

  • the present invention relates to a device for producing, in particular renovating, road surface layers, preferably using the old materials removed from the road.
  • the focus is on so-called cold recycling, in which an attempt is made to reuse the bituminous covering material that has been removed from the road surface by breaking or milling.
  • the old material is first fed to a crusher for breaking and homogenization, in order to then prepare the old material ready for installation with the addition of bitumen emulsion in a mixing plant, after which the material is applied to the road to be renovated.
  • the object of the present invention is therefore to create a device of the aforementioned type which allows a cold recycling rehabilitation process of roads which is relatively independent of the material properties to be carried out rationally and in an environmentally friendly manner on site.
  • a receiving silo for the old material supported on a chassis supported by motor-driven undercarriages, which can be fed to a subsequent crusher, preferably in a metered manner, the crusher being connected via metering conveying means to a mixing mechanism also supported on the chassis, the addition -Material components can be fed from at least one additional container supported on the chassis and from which the ready-to-install material can be fed via augers to a screed drawn from the chassis.
  • Such a facility can not only do that from the street Continuously pick up worn material, homogenize, process and reinstall, but also allows cold recycling of milled or. broken old asphalt, the creation of cold mix foundation layers with bitumen emulsions and, among other things, the hydraulic stabilization of various mineral base materials and their direct installation to base and foundation layers.
  • this device not only to renew bituminous coverings, but also to no longer renovate sufficiently load-bearing roads by first storing the milled old asphalt and storing the existing case, for example non-frost-resistant gravel sand, in a predetermined layer thickness, e.g. 15 cm, is dredged.
  • This material then first reaches the receiving silo of the device according to the invention, in order to then process it with bitumen emulsion and / or cement, lime, fly ash, etc. to be reinstalled directly as a cold mix foundation layer.
  • the temporarily stored old asphalt is fed to the device according to the invention, processed by it and then directly installed as a base course or final covering.
  • the wear layer is prepared with cold micro-topping and can be reinstalled directly.
  • a street renovated in this way surpasses the qualities of streets rehabilitated according to previous cold recycling processes and extends its field of application very decisively, the renovation using the device according to the invention also being more cost-effective and much more environmentally friendly.
  • the metering conveying means comprise a scraper belt between the crusher and the mixer
  • the chassis is also box-shaped and divided into additional containers for fuel, additives and hydraulic oil
  • the chassis furthermore has a preferably exchangeable additional container for granular resp. comprises dust-like components, the screw-controlled outlet of which opens out above the conveying means either in front of the crusher or in front of the mixer.
  • chassis carries an additional container which serves to hold bitumen emulsion or water or the like and which at least partially surrounds the main motor unit to absorb radiant heat.
  • the main engine unit comprises a diesel engine, the cooling water circuit and / or the exhaust gas flow of which is led to heat exchange through the mixing unit, or. its cooling water circuit serves to preheat the additional components.
  • the frames are preferably box-shaped and thus give the opportunity to form chambers for receiving fuel, hydraulic oil and liquid additives (not shown in more detail).
  • the trolleys 1, 1 ', 2 and 2' can be commercially available, hydraulically driven caterpillar single trolleys that allow the relatively long and heavy facility to move. Vehicles of this type are known per se, so that a detailed description of the structure, drive and control is unnecessary here.
  • a receiving silo 4 for the preferably old material is arranged on the front of the chassis 3, from where the old material can be fed to a subsequent crusher 5 in which the old material is broken and homogenized.
  • the arrangement is such that the material in the silo 4 via an inclined surface to the crusher 5, respectively. slips to a so-called scraper belt 6, a simple metering rake being sufficient to effect a suitable oversize separation (not shown).
  • vibrating surfaces are also u. Like. conceivable.
  • the crusher includes a crusher and a calibration device that is suitable for all larger chunks of material to be taken up by the lower scraper belt 6 and lead into the area of the crusher (not shown).
  • a mixer 7 is arranged downstream of the crusher 5 and supported on the chassis 3, the crusher 5 being connected to the mixer 7 via metering conveying means.
  • the funding can be the aforementioned scraper belt 6, the transport speed and the size of the expedient slide-controlled outlet opening on the crusher 5 allowing volumetric metering (not shown).
  • the mixer 7 is advantageously a two-shaft mixer 18 (FIG. 5) for the greatest possible mixing effect, in particular also for the preparation of stabilizing material.
  • the mixer 7 then pushes its mix in front of a so-called screed 14 arranged at the end of the chassis 3, where the ready-to-install material is picked up by screw conveyors 13 and distributed uniformly over the width of the screed 14.
  • the installation of the prepared mix using screed is known and need not be explained here.
  • the invention provides for the mixer 7 to be supplied with additional material components from at least one additional auxiliary container supported on the chassis 3 .
  • a first additional material component in the form of, in particular, bitumen emulsion or water is removed from an additional container 9 which is fixedly mounted on the chassis 3 and which at least partially surrounds the main motor unit 15 of the device in order to heat the radiant heat of the motor unit to heat up the contents of the additional container 9 benefit.
  • bitumen emulsion or the water can then be passed into the mixer 7 via suitable dosing means (not shown).
  • cooling water of the engine 15 can be passed through the mixing unit 7 via a suitable heat exchanger system 16, or can be used for preheating the additional components.
  • a preferably replaceable additional container 8 arranged on the chassis 3, the screw-controlled outlet 12 and. 12 'either in front of the crusher 5 or at the upper end of the scraper belt 6 before the mixer 7 opens.
  • This arrangement permits precise volumetric metering of the granular additional components removed from this container.
  • Hydraulic and electrical drive functions are advantageously derived from the main motor unit 15.
  • the trolleys, the crusher, the mixer, the screed, the steering, etc. can be driven hydraulically, whereas all metering drives, the valves, the control flaps and the control electronics are operated electrically.
  • the device according to the invention for the rehabilitation of road surface layers now allows the inclusion of any minerals in the form of milled old asphalt, gravel of various qualities, rubbish slag, etc., which materials are then preferably broken and homogenized in a continuous process and in volumetric, possibly weighed, dosage get to the mixer with the possible addition of one or more metered liquid components at the same time.
  • a dusty component such as cement and / or lime, etc. be added.
  • this facility basically allows the preparation and installation of new materials.

Description

Die vorliegende Erfindung betrifft eine Einrichtung zur Herstellung, insbesondere Sanierung von Strassenaufbauschichten, vorzugsweise unter Wiederverwendung der von der Strasse abgetragenen Altmaterialien.The present invention relates to a device for producing, in particular renovating, road surface layers, preferably using the old materials removed from the road.

Im Bereich der Strassensanierungen steht das sogenannte Kaltrecycling im Vordergrund, bei dem versucht wird, das von der Strassenoberfläche durch Aufbrechen oder Fräsen abgetragene bituminöse Belagsmaterial wiederzuverwenden. Hierbei wird das Altmaterial zunächst einem Brechwerk zur Brechung und Homogenisierung zugeführt, um dann das Altmaterial unter Zusatz von Bitumenemulsion in einem Mischwerk einbaufertig aufzubereiten, wonach das Material auf die zu sanierende Strasse aufgebracht wird.In the area of road renovation, the focus is on so-called cold recycling, in which an attempt is made to reuse the bituminous covering material that has been removed from the road surface by breaking or milling. Here, the old material is first fed to a crusher for breaking and homogenization, in order to then prepare the old material ready for installation with the addition of bitumen emulsion in a mixing plant, after which the material is applied to the road to be renovated.

Die hierfür zur Verfügung stehenden Maschinen sind allerdings nur unzureichend rationell einsetzbar und nur in der Lage, Altasphalt im Kaltrecycling-Verfahren an Ort zu bewältigen (siehe z.B. CIVIL ENGINEERING, November 1984, London, GB, Seiten 38, 40, 54; "Pavement recycling").The machines available for this, however, can only be used inefficiently and only in the Able to cope with old asphalt using the cold recycling process (see, for example, CIVIL ENGINEERING, November 1984, London, GB, pages 38, 40, 54; "Pavement recycling").

Eine Aufbereitung anderer Materialien oder eine Stabilisierung von Altkies oder weiterer Altmaterialien konnte hingegen bisher so nicht durchgeführt werden.Up to now, however, it has not been possible to process other materials or stabilize old gravel or other old materials.

Aufgabe der vorliegenden Erfindung ist deshalb die Schaffung einer Einrichtung der vorgenannten Art, welche gestattet, an Ort ein von der Materialbeschaffenheit relativ unabhängiges Kaltrecycling-Sanierungsverfahren von Strassen rationell und umweltfreundlich durchzuführen.The object of the present invention is therefore to create a device of the aforementioned type which allows a cold recycling rehabilitation process of roads which is relatively independent of the material properties to be carried out rationally and in an environmentally friendly manner on site.

Dies wird erfindungsgemäss erreicht durch ein, auf einem von motorisch antreibbaren Fahrwerken getragenen Chassis abgestütztes Aufnahmesilo für das Altmaterial, das einem nachgesetzten Brechwerk vorzugsweise dosierbar zuführbar ist, wobei das Brechwerk über dosierende Fördermittel mit einem ebenfalls auf dem Chassis abgestützten Mischwerk in Verbindung steht, dem Zusatz-Materialkomponenten aus mindestens einem, auf dem Chassis abgestützten Zusatzbehälter zuführbar sind und aus dem das einbaufertig aufbereitete Material über Förderschnecken einer vom Chassis nachgezogenen Einbaubohle zuführbar ist.This is achieved according to the invention by a receiving silo for the old material, supported on a chassis supported by motor-driven undercarriages, which can be fed to a subsequent crusher, preferably in a metered manner, the crusher being connected via metering conveying means to a mixing mechanism also supported on the chassis, the addition -Material components can be fed from at least one additional container supported on the chassis and from which the ready-to-install material can be fed via augers to a screed drawn from the chassis.

Eine solche Einrichtung kann nun nicht nur das von der Strasse abgetragene Altmaterial kontinuierlich aufnehmen, homogenisieren, aufbereiten und wieder einbauen, sondern gestattet auch neben dem Kaltrecycling von gefrästen resp. gebrochenem Altasphalt die Erstellung von Kaltmischfundationsschichten mit Bitumenemulsionen sowie u.a. die hydraulische Stabilisierung verschiedenster mineralischer Grundmaterialien und deren direkten Einbau zu Trag- und Fundationsschichten.Such a facility can not only do that from the street Continuously pick up worn material, homogenize, process and reinstall, but also allows cold recycling of milled or. broken old asphalt, the creation of cold mix foundation layers with bitumen emulsions and, among other things, the hydraulic stabilization of various mineral base materials and their direct installation to base and foundation layers.

Somit wird es mit dieser erfindungsgemässen Einrichtung möglich, nicht nur bituminöse Beläge zu erneuern, sondern auch nicht mehr genügend tragfähige Strassen zu sanieren, indem zunächst der abgefräste Altasphalt zwischengelagert und der bestehende Koffer, beispielsweise nicht frostsicherer Kiessand, in vorgegebener Schichtdicke, z.B. 15 cm, ausgebaggert wird. Dieses Material gelangt dann zunächst in den Aufnahmesilo der erfindungsgemässen Einrichtung, um von dieser dann nach der Aufbereitung mit Bitumenemulsion und/oder Zement, Kalk, Flugasche u.s.w. als Kaltmischfundationsschicht wieder direkt eingebaut zu werden. Danach wird der zwischengelagerte Altasphalt der erfindungsgemässen Einrichtung zugeführt, von dieser aufbereitet und dann als Tragschicht oder Endbelag direkt eingebaut. Zudem kann dann mit der gleichen erfindungsgemässen Einrichtung noch eine Deck- resp. Verschleiss-Schicht mit Kaltmikrobelag aufbereitet und wieder direkt eingebaut werden.It is thus possible with this device according to the invention not only to renew bituminous coverings, but also to no longer renovate sufficiently load-bearing roads by first storing the milled old asphalt and storing the existing case, for example non-frost-resistant gravel sand, in a predetermined layer thickness, e.g. 15 cm, is dredged. This material then first reaches the receiving silo of the device according to the invention, in order to then process it with bitumen emulsion and / or cement, lime, fly ash, etc. to be reinstalled directly as a cold mix foundation layer. Then the temporarily stored old asphalt is fed to the device according to the invention, processed by it and then directly installed as a base course or final covering. In addition, a deck or. The wear layer is prepared with cold micro-topping and can be reinstalled directly.

Eine auf solche Weise sanierte Strasse übertrifft die Qualitäten von nach bisherigen Kaltrecycling-Verfahren sanierten Strassen und erweitert dessen Anwendungsgebiet ganz entscheidend, wobei die Sanierung mit der erfindungsgemässen Einrichtung zudem kostengünstiger und wesentlich umweltfreundlicher durchführbar ist.A street renovated in this way surpasses the qualities of streets rehabilitated according to previous cold recycling processes and extends its field of application very decisively, the renovation using the device according to the invention also being more cost-effective and much more environmentally friendly.

Entsprechend bestehen vorteilhafte Ausgestaltungen der erfindungsgemässen Einrichtung dann, wenn die dosierenden Fördermittel zwischen dem Brechwerk und dem Mischwerk ein Schrapperband umfassen, wenn ferner das Chassis kastenförmig ausgebildet und in Zusatzbehälter für Treibstoff, Additive und Hydrauliköl aufgeteilt ist und wenn weiter das Chassis einen vorzugsweise auswechselbaren Zusatzbehälter für körnige resp. staubförmige Komponenten umfasst, dessen schneckengesteuerter Auslass oberhalb der Fördermittel entweder vor dem Brechwerk oder vor dem Mischwerk ausmündet.Accordingly, there are advantageous refinements of the device according to the invention when the metering conveying means comprise a scraper belt between the crusher and the mixer, when the chassis is also box-shaped and divided into additional containers for fuel, additives and hydraulic oil and when the chassis furthermore has a preferably exchangeable additional container for granular resp. comprises dust-like components, the screw-controlled outlet of which opens out above the conveying means either in front of the crusher or in front of the mixer.

Eine weitere vorteilhafte Ausgestaltung ist gegeben, wenn das Chassis einen Zusatzbehälter trägt, welcher der Aufnahme von Bitumenemulsion oder Wasser oder dgl. dient und welcher zur Aufnahme von Strahlungswärme wenigstens teilweise die Haupt-Motoreinheit umgibt.A further advantageous embodiment is provided if the chassis carries an additional container which serves to hold bitumen emulsion or water or the like and which at least partially surrounds the main motor unit to absorb radiant heat.

Hervorragende Ergebnisse werden weiter dann erreicht, wenn die Haupt-Motoreinheit einen Dieselmotor umfasst, dessen Kühlwasserkreislauf und/oder dessen Abgasstrom zum Wärmeaustausch durch das Mischwerk geführt ist, resp. dessen Kühlwasserkreislauf der Vorheizung der Zusatzkomponenten dient.Excellent results are further achieved if the main engine unit comprises a diesel engine, the cooling water circuit and / or the exhaust gas flow of which is led to heat exchange through the mixing unit, or. its cooling water circuit serves to preheat the additional components.

Eine beispielsweise Ausführungsform des Erfindungsgegenstandes ist nachfolgend anhand der Zeichnung näher erläutert.An example embodiment of the subject matter of the invention is explained in more detail below with reference to the drawing.

Es zeigen:

Fig. 1
eine schematische Seitenansicht der erfindungsgemässen Einrichtung zur Sanierung von Strassenaufbauschichten;
Fig. 2
eine schematische Draufsicht entlang der Schnittlinie II-II in Fig. 1;
Fig. 3
eine schematische Teil-Draufsicht entlang der Linie III-III in Fig. 1;
Fig. 4
eine schematische Queransicht entlang der Schnittlinie IV-IV in Fig. 1; und
Fig. 5
eine schematische Queransicht entlang der Schnittlinie V-V in Fig. 1.

Show it:
Fig. 1
is a schematic side view of the inventive device for the rehabilitation of road construction layers;
Fig. 2
a schematic plan view along the section line II-II in Fig. 1;
Fig. 3
a schematic partial plan view along the line III-III in Fig. 1;
Fig. 4
a schematic transverse view along the section line IV-IV in Fig. 1; and
Fig. 5
2 shows a schematic transverse view along the section line VV in FIG. 1.

Die in den Fig. 1 bis 5 schematisch dargestellte Einrichtung zur Sanierung von Strassenaufbauschichten umfasst ein Chassis 3 aus einem sogenannten Knickrahmen mit dem Vorderwagen-Grundrahmen 3′ und dem Hinterwagen-Grundrahmen 3˝, welche je auf Fahrwerke 1 und 1′ resp. 2 und 2′ abgestützt sind (Fig. 2). Die Rahmen sind aus statischen Gründen vorzugsweise kastenförmig ausgestaltet und geben so Gelegenheit zur Bildung von Kammern zur Aufnahme von Brennstoff, Hydrauliköl und flüssigen Additiven (nicht näher gezeigt). Die Fahrwerke 1, 1′, 2 und 2′ können handelsübliche, hydraulisch angetriebene Raupen-Einzelfahrwerke sein, die gestatten, die relativ lange und schwere Einrichtung fortzubewegen. Fahrzeuge dieser Art sind ansich bekannt, so dass sich hier ein detaillierter Beschrieb vom Aufbau, Antrieb und Steuerung erübrigt.1 to 5 schematically shown device for the rehabilitation of road construction layers comprises a chassis 3 from a so-called articulated frame with the front frame 3 'and the rear frame 3', which each on trolleys 1 and 1 'respectively. 2 and 2 'are supported (Fig. 2). For structural reasons, the frames are preferably box-shaped and thus give the opportunity to form chambers for receiving fuel, hydraulic oil and liquid additives (not shown in more detail). The trolleys 1, 1 ', 2 and 2' can be commercially available, hydraulically driven caterpillar single trolleys that allow the relatively long and heavy facility to move. Vehicles of this type are known per se, so that a detailed description of the structure, drive and control is unnecessary here.

Erfindungswesentlich ist hier, dass auf dem Chassis 3 frontseitig ein Aufnahmesilo 4 für das vorzugsweise Altmaterial angeordnet ist, von wo das Altmaterial einem nachgesetzten Brechwerk 5 zugeführt werden kann, in dem das Altmaterial gebrochen und homogenisiert wird. Vorzugsweise ist die Anordnung so, dass das Material im Silo 4 über eine Schrägfläche zum Brechwerk 5 resp. zu einem sogenannten Schrapperband 6 rutscht, wobei ein einfacher Dosierrechen genügt, eine geeignete Ueberkornausscheidung zu bewirken (nicht gezeigt). Für den Transport des Altmaterials vom Silo in das Brechwerk sind aber auch Rüttelflächen u. dgl. denkbar.It is essential to the invention that a receiving silo 4 for the preferably old material is arranged on the front of the chassis 3, from where the old material can be fed to a subsequent crusher 5 in which the old material is broken and homogenized. Preferably, the arrangement is such that the material in the silo 4 via an inclined surface to the crusher 5, respectively. slips to a so-called scraper belt 6, a simple metering rake being sufficient to effect a suitable oversize separation (not shown). For the transport of the old material from the silo to the crusher, vibrating surfaces are also u. Like. conceivable.

Das Brechwerk umfasst einen Brecher sowie eine Kalibriervorrichtung, die geeignet ist, alle grösseren Materialbrocken vom unteren Schrapperband 6 aufzunehmen und in den Bereich des Brechers zu führen (nicht gezeigt).The crusher includes a crusher and a calibration device that is suitable for all larger chunks of material to be taken up by the lower scraper belt 6 and lead into the area of the crusher (not shown).

Erfindungsgemäss ist weiter dem Brechwerk 5 ein Mischwerk 7 nachgeordnet und auf dem Chassis 3 abgestützt, wobei das Brechwerk 5 über dosierende Fördermittel mit dem Mischwerk 7 in Verbindung steht.According to the invention, a mixer 7 is arranged downstream of the crusher 5 and supported on the chassis 3, the crusher 5 being connected to the mixer 7 via metering conveying means.

Das Fördermittel kann hier das vorerwähnte Schrapperband 6 sein, wobei dessen Transportgeschwindigkeit sowie die Grösse der zweckmässig schiebergesteuerten Austrittsöffnung am Brechwerk 5 eine volumetrische Dosierung erlauben (nicht gezeigt).The funding can be the aforementioned scraper belt 6, the transport speed and the size of the expedient slide-controlled outlet opening on the crusher 5 allowing volumetric metering (not shown).

Das Mischwerk 7 ist vorteilhaft ein Zweiwellen-Mischer 18 (Fig. 5) für einen grösstmöglichen Mischeffekt insbesondere auch für die Aufbereitung von Stabilisationsmaterial.The mixer 7 is advantageously a two-shaft mixer 18 (FIG. 5) for the greatest possible mixing effect, in particular also for the preparation of stabilizing material.

Das Mischwerk 7 schiebt dann sein Mischgut vor eine, am Ende des Chassis 3 angeordnete sogenannte Einbaubohle 14, wo das einbaufertige Material von Förderschnecken 13 aufgenommen und gleichmässig auf die Breite der Einbaubohle 14 verteilt wird. Der Einbau des aufbereiteten Mischgutes mittels Einbaubohle ist bekannt und muss hier nicht näher erläutert werden.The mixer 7 then pushes its mix in front of a so-called screed 14 arranged at the end of the chassis 3, where the ready-to-install material is picked up by screw conveyors 13 and distributed uniformly over the width of the screed 14. The installation of the prepared mix using screed is known and need not be explained here.

Neben den bereits erwähnten, nicht gezeigten Kammern im Chassis 3 für Brennstoff, Hydrauliköl und Additiven, die in üblicher Weise durch Pumpenmittel gefördert werden können, ist erfindungsgemäss vorgesehen, dem Mischwerk 7 Zusatz-Materialkomponenten aus mindestens einem weiteren, auf dem Chassis 3 abgestützten Zusatzbehälter zuzuführen.In addition to the previously mentioned, not shown, chambers in the chassis 3 for fuel, hydraulic oil and additives, which can be conveyed in the usual way by pumping means, the invention provides for the mixer 7 to be supplied with additional material components from at least one additional auxiliary container supported on the chassis 3 .

Eine erste Zusatz-Materialkomponente in Form von insbesondere Bitumenemulsion oder auch Wasser wird einem fest auf dem Chassis 3 montierten Zusatzbehälter 9 entnommen, der die Haupt-Motoreinheit 15 der Einrichtung wenigstens teilweise umgibt, um die Strahlungswärme der Motoreinheit zum Aufwärmen des Inhaltes des Zusatzbehälters 9 zu nützen.A first additional material component in the form of, in particular, bitumen emulsion or water is removed from an additional container 9 which is fixedly mounted on the chassis 3 and which at least partially surrounds the main motor unit 15 of the device in order to heat the radiant heat of the motor unit to heat up the contents of the additional container 9 benefit.

Ueber geeignete Dosiermittel (nicht gezeigt) kann dann die Bitumenemulsion oder das Wasser in das Mischwerk 7 geleitet werden.The bitumen emulsion or the water can then be passed into the mixer 7 via suitable dosing means (not shown).

Ohne zusätzliche Prozessenergie kann eine weitere Erwärmung des einbaufertig aufbereiteten Materials und somit eine Qualitätsverbesserung erreicht werden, wenn, wie in Fig. 1 angedeutet, zunächst der Auspuff 15′ der Motoreinheit 15 über eine Leitung 17 mit dem Innern des Mischwerkes 7 verbunden wird, um dort einen Wärmeaustausch mit dem Mischgut zu erreichen. An geeigneter Stelle kann dann der Abgasaustritt erfolgen.Without additional process energy, further heating of the ready-to-install prepared material and thus a quality improvement can be achieved if, as indicated in Fig. 1, first the exhaust 15 'of the motor unit 15 is connected via a line 17 to the inside of the mixer 7, in order to be there to achieve heat exchange with the mix. The exhaust gas outlet can then take place at a suitable point.

Weiter kann das Kühlwasser des Motors 15 über ein geeignetes Wärmetauscher-System 16 durch das Mischwerk 7 geführt sein, oder zur Vorwärmung der Zusatzkomponenten herangezogen werden.Furthermore, the cooling water of the engine 15 can be passed through the mixing unit 7 via a suitable heat exchanger system 16, or can be used for preheating the additional components.

Weiter ist für die staubförmigen resp. körnigen Zusatzkomponenten ein vorzugsweise auswechselbarer Zusatzbehälter 8 auf dem Chassis 3 angeordnet, dessen schneckengesteuerter Auslass 12 resp. 12′ entweder vor dem Brechwerk 5 oder am oberen Ende des Schrapperbandes 6 vor dem Mischwerk 7 ausmündet. Diese Anordnung gestattet eine präzise volumetrische Dosierung der diesem Behälter entnommenen granularen Zusatzkomponenten.Next is for the dusty resp. granular additional components a preferably replaceable additional container 8 arranged on the chassis 3, the screw-controlled outlet 12 and. 12 'either in front of the crusher 5 or at the upper end of the scraper belt 6 before the mixer 7 opens. This arrangement permits precise volumetric metering of the granular additional components removed from this container.

Weitere Zusatzbehälter 10 für Wasser oder irgendwelche Additive können vorgesehen sein, wie dies in Fig. 4 angedeutet ist.Further additional containers 10 for water or any additives can be provided, as indicated in FIG. 4.

Die Steuerung der Einrichtung sowie des Prozessablaufes kann natürlich von Hand oder automatisch erfolgen, was hier nicht näher zu erläutern ist, da solche Vorgänge ansich bekannt sind. Vorzugsweise werden von der Haupt-Motoreinheit 15 zweckmässig hydraulische und elektrische Antriebsfunktionen abgeleitet. Beispielsweise lassen sich die Fahrwerke, das Brechwerk, das Mischwerk, die Einbaubohle, die Lenkung u.a. hydraulisch antreiben, wogegen alle Dosierantriebe, die Ventile, die Regelklappen u.a. sowie die Steuerelektronik elektrisch betrieben werden.The control of the device and the process flow can of course be done manually or automatically, which is not to be explained here, since such processes are known per se. Hydraulic and electrical drive functions are advantageously derived from the main motor unit 15. For example, the trolleys, the crusher, the mixer, the screed, the steering, etc. can be driven hydraulically, whereas all metering drives, the valves, the control flaps and the control electronics are operated electrically.

Wie aus dem Vorbeschriebenen ersichtlich, gestattet nun die erfindungsgemässe Einrichtung zur Sanierung von Strassenaufbauschichten zunächst die Aufnahme irgendwelcher Mineralien in Form von gefrästem Altasphalt, Kies verschiedener Qualitäten, Kehrichtschlacke u.a., welche Materialien dann vorzugsweise im kontinuierlichen Verfahren gebrochen und homogenisiert und in volumetrischer, gegebenenfalls gewogener Dosierung zum Mischwerk unter möglicher Zugabe von gleichzeitig einer oder mehrerer dosierter Flüssigkomponenten gelangen. Zudem kann eine staubförmige Komponente, wie Zement und/oder Kalk u.s.w. beigemischt werden. Diese Einzelkomponenten ergeben dann eine einbaufertige homogene Masse, die in variabler Breite und Dicke eingebaut werden kann, wobei durch den vorbeschriebenen Wärmetausch die Oberfläche der einzelnen Mischgutkörner in vorteilhafter qualitätsverbessernder Weise erwärmt werden können.As can be seen from the above, the device according to the invention for the rehabilitation of road surface layers now allows the inclusion of any minerals in the form of milled old asphalt, gravel of various qualities, rubbish slag, etc., which materials are then preferably broken and homogenized in a continuous process and in volumetric, possibly weighed, dosage get to the mixer with the possible addition of one or more metered liquid components at the same time. In addition, a dusty component, such as cement and / or lime, etc. be added. These individual components then result in a ready-to-install homogeneous mass which can be installed in variable widths and thicknesses, the surface of the individual mixed grains being heated in an advantageous quality-improving manner by the heat exchange described above.

Damit sind sämtliche Bedingungen erfüllt, um mit dieser Einrichtung an Ort sowohl Altasphalt im Kaltrecycling-Verfahren als auch Kaltmischfundationsschichten mit Bitumenemulsionen sowie hydraulische Stabilisierungsschichten aufbereiten und direkt einbauen zu können. Zudem gestattet diese Einrichtung grundsätzlich auch Aufbereitung und Einbau von Neumaterialien.This means that all of the conditions are met in order to use this facility to process and directly install old asphalt using the cold recycling process as well as cold mix foundation layers with bitumen emulsions and hydraulic stabilization layers. In addition, this facility basically allows the preparation and installation of new materials.

Claims (7)

1. Machine for constructing, in particular, redeveloping, the constructional layers of roads, preferably by re-using the old material removed from the road; wherein a receiving silo (4) for the old material, which is mounted on a chassis (3) of a motor-driven running gear (1, 1′; 2, 2′), is feedable, preferably in regulatable quantities, to a downstream crusher (5); said crusher (5) being in connection, via dosaging conveying device (6), with a mixing mill (7), also mounted on said chassis (3), whereto additional material components from at least one additional tank (8, 9, 10), supported on said chassis (3), may be fed and wherefrom the prepared material ready for insertion is fed by way of a conveyer worm (13) to an insertion device (14) drawn along behind said chassis (3).
2. The machine as defined in claim 1, wherein said dosaging conveying device (6) comprises a scraper band between said crusher (5) and said mixing mill (7).
3. The machine as defined in claim 1, wherein said chassis (3) is of box-type construction and is devided into additional tanks for fuel, additives and hydraulic oil.
4. The machine as defined in claim 1, wherein said chassis (3) comprises an additional tank (8), which is preferably exchangeable, for granular and powdered components, the worm-controlled outlet (12) thereof opening above said conveying device (6) upstream of said crusher (5) or upstream of said mixing mill (7).
5. The machine as defined in claim 1, wherein said chassis carries an additional tank (9) for receiving bituminous emulsion or water or the like, which at least partially surrounds the main engine unit (15) in order to absorb radiant heat.
6. The machine as defined in claim 5, wherein said main motor unit (15) comprises a diesel engine, the cooling-water circulation and/or the exhaust flow thereof being conducted for heat exchange through said mixing mill (7).
7. The machine as defined in claim 6, wherein said cooling-water circulation serves for the preliminary heating of the additional components.
EP88118700A 1987-11-18 1988-11-10 Apparatus for reconstructing layers of road surfacings Expired - Lifetime EP0316752B1 (en)

Applications Claiming Priority (2)

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CH4481/87A CH674384A5 (en) 1987-11-18 1987-11-18
CH4481/87 1987-11-18

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EP0316752A1 EP0316752A1 (en) 1989-05-24
EP0316752B1 true EP0316752B1 (en) 1991-08-28

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US (1) US4944631A (en)
EP (1) EP0316752B1 (en)
JP (1) JP2667230B2 (en)
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DE (1) DE3864494D1 (en)

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Also Published As

Publication number Publication date
JPH01154902A (en) 1989-06-16
US4944631A (en) 1990-07-31
EP0316752A1 (en) 1989-05-24
CH674384A5 (en) 1990-05-31
DE3864494D1 (en) 1991-10-02
JP2667230B2 (en) 1997-10-27

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