EP0388819A1 - Road-paving machine - Google Patents

Road-paving machine Download PDF

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Publication number
EP0388819A1
EP0388819A1 EP90105040A EP90105040A EP0388819A1 EP 0388819 A1 EP0388819 A1 EP 0388819A1 EP 90105040 A EP90105040 A EP 90105040A EP 90105040 A EP90105040 A EP 90105040A EP 0388819 A1 EP0388819 A1 EP 0388819A1
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EP
European Patent Office
Prior art keywords
board computer
screed
paver
height
setpoints
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP90105040A
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German (de)
French (fr)
Inventor
Robert Prang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ABG Werke GmbH
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ABG Werke GmbH
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Publication date
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Publication of EP0388819A1 publication Critical patent/EP0388819A1/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
    • E01C19/004—Devices for guiding or controlling the machines along a predetermined path
    • 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 invention relates to a road paver with a screed, which is provided with actuators for adjusting the height and incline of the screed and sensors therefor, the output signals of the sensors serving as actual values for the actuators according to predeterminable setpoints controlling controllers.
  • control devices consist of height and inclination controls, which each activate the actuating cylinder on the left and right paver side via solenoid valves in the event of a deviation from the desired height or the desired bank angle, so that a corresponding correction adjustment on the towing arms via which the screed is articulated in height on the chassis of the paver is done.
  • reference wires are usually arranged along the installation section, on which a sensor for the actual value determination for the height controller, whose setpoint is manually adjusted via a spindle, is guided along one or both sides of the paver.
  • the Clamping the reference wires is very complex and leads to the fact that the smallest possible number of support points is used.
  • the reference wire inevitably experiences a sag under its own weight and the weight of the height sensor and also when the temperature rises, which causes corresponding unevenness.
  • the object of the invention is to provide a paver of the type mentioned at the outset, which makes it possible to automatically maintain bank values, for example in transition sections, according to a predetermined profile plan.
  • a displacement measuring device is provided, the output signals of which can be fed to an on-board computer, the on-board computer along with a data memory for storing the length of a transition section and the difference in cross slope that is to be maintained between the start and end point of the transition section the installation path is provided and the setpoints calculated and predeterminable for the inclination controller by the on-board computer can be changed continuously by the on-board computer depending on the start and end point.
  • an on-board computer enters the length of the transition section and the difference in the cross slope that is to be maintained between the start and end point of the transition section.
  • the on-board computer calculates the required cross slope for each point of the transition section and gives the calculated value as a target value to a corresponding inclination controller, so that there is a uniform and continuous change in inclination and thus a corresponding improvement in the quality of the installed road.
  • the existing base to be built over is expediently used as a reference for the installation height. Any unevenness in the base is determined in advance by leveling at defined measuring points (stations) along the road to be manufactured and entered into the on-board computer as station-related height corrections.
  • station-related height corrections When installing the layer, the respective height of the base and the station are determined in particular by a measuring wheel which is arranged on the probe arm of a height controller.
  • the height correction values are determined on a pa along the longitudinal axis of the road parallel line on which the measuring wheel runs during installation.
  • the corresponding height correction is carried out for each station by means of actuators acting on the screed, the height correction being changed continuously between one station from one entered value to another depending on the distance the paver has traveled. In this way, the existing unevenness of the underlay is compensated and a practically flat layer is installed.
  • At least one measuring wheel is used simultaneously as a height sensor, the use of reference wires or the like can be dispensed with.
  • the on-board computer can be used to determine, prepare and save data that is important for the use of the road paver in the manufacture of road pavements and to make it available at every point on the paving route. This includes the quantity of mix actually installed since the start of paving or its deviation from a target quantity, the current and average speed of advance and the resulting efficiency of paving.
  • the road paver 1 shown schematically in FIGS. 1 and 2 comprises a screed 2 which is articulated in a higher adjustable manner by means of draw arms 3 on the chassis 5 of the road paver 1, for example provided with a crawler track 4.
  • Paving material which is picked up by a material bucket 6 at the front end of the chassis 5, is fed to the screed 2, which is located at the rear of the chassis 5, and distributed over the width of the screed 2 by means of a spreading screw 7, which compresses the paving material with built-in predetermined layer thickness.
  • Actuators 8 in the form of actuating cylinders with pistons which can be acted upon on both sides and corresponding directional valves 9 for adjusting the piston and thus the height of the screed 2 with height regulators 10 serve to adjust the height of the screed 2 on one or both sides thereof.
  • An inclinometer on the screed 2 the actual values for the cross slope of the screed 2 for provides a tilt controller 11 is integrated in the latter.
  • the inclination controller 11 regulates the transverse inclination of the screed 2 in accordance with a predefined setpoint via one of the actuators 8, the other being used for height regulation.
  • one or two measuring wheels 12 are provided for measuring the distance covered by the road paver 1, which run on the base for the layer to be installed with respect to the screed 2 adjacent to the respective outer edge thereof, preferably arranged symmetrically to the longitudinal axis of the road paver 1 and in the illustrated embodiment via a pivotable arm 13 with an integrated in the height controller 10 transducer for the distance covered by the measuring wheel 12 as well as for the angle of the arm 13 to a reference plane for obtaining a height measurement. While the height measurement and the inclination measurement usually lead to an analog signal, the distance measurement usually results in a digital signal.
  • the road paver 1 has an on-board computer 14 with an input keyboard 15, which at the same time has a display field, a microprocessor 16, a data memory 17, a ROM memory 18 for the operating system, an analog input and - Output stage 19 and a digital input and output stage 20.
  • the signals representing the actual values of the height and inclination measurement are fed to the microprocessor 16, as are the signals representing the actual value of the displacement measurement.
  • Setpoints for the height correction or the layer thickness of the layer to be installed are stored in the data memory 17 in relation to the station. These setpoints were determined in advance on the installation section.
  • the microprocessor 16 outputs for the stations, i.e. depending on the distance measurement, the setpoints stored in the data memory 17 before the height controllers 10, so that corresponding height corrections are made in accordance with the unevenness of the base. Between the given stations, which do not have to be equidistant, the microprocessor 16 continuously changes the setpoint for the installation height from one stored value to another, depending on the distance covered, preferably in a linear manner.
  • the set point of the cross slope is continuously measured over the length of the microprocessor 16 Gang distance between the start and end point changed in linear dependence on the length and fed to the inclination controller 11.
  • two measuring wheels 12 are provided at a distance from the central longitudinal axis of the paver 1, both of which are connected via arms 13 to corresponding transducers, so that two height measurements are carried out transversely to the direction of travel of the paver and at a distance from one another.
  • the inclinometer and the inclination controller 11 can be dispensed with if the target values for the height correction or layer thickness are input to the on-board computer 14 in relation to the page.
  • a measuring wheel 12 which can be arranged off-center, can make do with distance measurement, but the height sensors are required for the actuators 8.
  • the measuring wheels 12 can be connected to the extendable parts of the screed 2, so that they are each located in the edge region of the pave.
  • an alarm circuit 21 can be provided for the acoustic and / or visual indication that predetermined setpoints cannot be reached.
  • the actuators 8 are also expediently operable manually, so that the paver can still work if the on-board computer 14 fails.
  • Corresponding markings along the installation path can also be used as sensors.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Road Repair (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

Die Erfindung betrifft einen Straßenfertiger mit einer Einbaubohle (2), die mit Stellgliedern (8) für die Höhen- und Neigungseinstellung der Einbaubohle (2) sowie Meßfühlern hierfür versehen ist, wobei die Ausgangssignale der Meßfühler als Istwerte für die Stellglieder (8) entsprechend vorgebbaren Sollwerten steuernde Regler (10, 11) dienen. Um Querneigungswerte nach einem vorgegebenen Profilplan automatisch einhalten zu können, ist vorgesehen, daß eine Wegmeßeinrichtung (12) vorgesehen ist, deren Ausgangssignale einem Bordrechner (14) zuführbar sind, wobei der Bordrechner (14) mit einem Datenspeicher (17) zum Speichern der Länge einer Übergangsstrecke und des Differenzwertes der Querneigung, der zwischen Anfangs- und Endpunkt der Übergangsstrecke eingehalten werden soll, entlang des Einbauweges versehen ist und die dem Neigungsregler (11). vom Bordrechner (14) berechneten und vorgebbaren Sollwerte wegabhängig vom Anfangs- zum Endpunkt kontinuierlich durch den Bordrechner (14) änderbar sind.The invention relates to a paver with a screed (2), which is provided with actuators (8) for adjusting the height and incline of the screed (2) and sensors therefor, the output signals of the sensors being able to be predetermined as actual values for the actuators (8) Controllers (10, 11) controlling setpoints are used. In order to be able to automatically maintain bank values according to a predetermined profile plan, it is provided that a displacement measuring device (12) is provided, the output signals of which can be fed to an on-board computer (14), the on-board computer (14) having a data memory (17) for storing the length of a Transition section and the difference in cross slope, which is to be maintained between the start and end point of the transition section, is provided along the installation path and which the inclination controller (11). The target values calculated and predeterminable by the on-board computer (14) can be changed continuously by the on-board computer (14) from the start to the end point.

Description

Die Erfindung betrifft einen Straßenfertiger mit einer Einbaubohle, die mit Stellgliedern für die Höhen- und Neigungseinstellung der Einbaubohle sowie Meßfühlern hierfür versehen ist, wobei die Ausgangssignale der Meßfühler als Istwerte für die Stellglieder entsprechend vorgebbaren Sollwerten steuernde Regler dienen.The invention relates to a road paver with a screed, which is provided with actuators for adjusting the height and incline of the screed and sensors therefor, the output signals of the sensors serving as actual values for the actuators according to predeterminable setpoints controlling controllers.

Bei Straßenfertigern dieser Art ist es bekannt, daß die Einbauhöhen bzw. Querneigungen der einzubauenden Schicht mit Hilfe von Regeleinrichtungen überwacht und gegebenenfalls korrigiert werden können. Die Regeleinrichtungen bestehen aus Höhen- und Neigungsreglern, die jeweils bei Abweichung von der Sollhöhe bzw. der gewünschten Querneigung Stellzylinder an der linken und rechten Fertigerseite über Elektromagnetventile aktivieren, so daß eine ent­sprechende Korrekturverstellung an Zugarmen, über die die Einbaubohle höhen­verstellbar am Fahrwerk des Fertigers angelenkt ist, erfolgt.In road pavers of this type, it is known that the installation heights or transverse inclinations of the layer to be installed can be monitored and, if necessary, corrected using control devices. The control devices consist of height and inclination controls, which each activate the actuating cylinder on the left and right paver side via solenoid valves in the event of a deviation from the desired height or the desired bank angle, so that a corresponding correction adjustment on the towing arms via which the screed is articulated in height on the chassis of the paver is done.

Es werden zwei Aufbauanordnungen verwendet, und zwar

  • a. Regelung des Stellzylinders auf der einen Fertigerseite durch einen Höhenregler und des Stellzylinders auf der anderen Seite durch einen Nei­gungsregler;
  • b. Regelung der Stellzylinder auf beiden Fertigerseiten durch Höhen­regler.
Two setups are used, namely
  • a. Regulation of the actuating cylinder on one side of the paver by a height regulator and of the actuating cylinder on the other side by means of an inclination regulator;
  • b. Regulation of the actuating cylinders on both sides of the paver using height controls.

Als Referenz für die Einbauhöhe werden entlang der Einbaustrecke ge­wöhnlich Referenzdrähte angeordnet, auf denen ein- oder beidseitig des Ferti­gers ein Fühler für die Istwertfeststellung für den Höhenregler, dessen Soll­wert über eine Spindel manuell eingestellt wird, entlanggeführt werden. Das Aufspannen der Referenzdrähte ist sehr aufwendig und führt dazu, daß mit einer möglichst kleinen Anzahl von Unterstützungspunkten gearbeitet wird. Dadurch erfährt der Referenzdraht zwangsläufig unter Eigengewicht und dem Gewicht des Höhenfühlers und ferner bei Temperaturerhöhung einen Durchhang, wodurch ent­sprechende Unebenheiten hervorgerufen werden.As a reference for the installation height, reference wires are usually arranged along the installation section, on which a sensor for the actual value determination for the height controller, whose setpoint is manually adjusted via a spindle, is guided along one or both sides of the paver. The Clamping the reference wires is very complex and leads to the fact that the smallest possible number of support points is used. As a result, the reference wire inevitably experiences a sag under its own weight and the weight of the height sensor and also when the temperature rises, which causes corresponding unevenness.

Bei Verwendung des Neigungsreglers besteht die Problematik, daß Verän­derungen der Straßenquerneigung, wie sie insbesondere in den Übergangsstrecken vor und nach Kurven notwendig sind, manuell eingestellt werden müssen. Die Genauigkeit der Einstellung ist somit von der Sorgfalt und der Sachkenntnis des Bedienungsmannes abhängig.When using the inclination controller, there is the problem that changes in the road gradient, as are necessary in particular in the transition sections before and after curves, have to be adjusted manually. The accuracy of the setting is therefore dependent on the care and expertise of the operator.

Aufgabe der Erfindung ist es, einen Straßenfertiger der eingangs ge­nannten Art zu schaffen, der es ermöglicht, Querneigungswerte etwa in Über­gangsabschnitten nach einem vorgegebenen Profilplan automatisch einzuhalten.The object of the invention is to provide a paver of the type mentioned at the outset, which makes it possible to automatically maintain bank values, for example in transition sections, according to a predetermined profile plan.

Diese Aufgabe wird dadurch gelöst, daß eine Wegmeßeinrichtung vorgesehen ist, deren Ausgangssignale einem Bordrechner zuführbar sind, wobei der Bor­drechner mit einem Datenspeicher zum Speichern der Länge einer Übergangs­strecke und des Differenzwertes der Querneigung, der zwischen Anfangs- und Endpunkt der Übergangsstrecke eingehalten werden soll, entlang des Einbauwegs versehen ist und die dem Neigungsregler vom Bordrechner berechneten und vor­gebbaren Sollwerte wegabhängig vom Anfangs- zum Endpunkt kontinuierlich durch den Bordrechner änderbar sind.This object is achieved in that a displacement measuring device is provided, the output signals of which can be fed to an on-board computer, the on-board computer along with a data memory for storing the length of a transition section and the difference in cross slope that is to be maintained between the start and end point of the transition section the installation path is provided and the setpoints calculated and predeterminable for the inclination controller by the on-board computer can be changed continuously by the on-board computer depending on the start and end point.

In Übergangsstrecken insbesondere vor und nach Kurven, wo sich die Querneigung ändert, wird einem Bordrechner die Länge der Übergangsstrecke und der Differenzwert der Querneigung, der zwischen Anfangs- und Endpunkt der Übergangsstrecke eingehalten werden soll, eingegeben. Der Bordrechner berech­net für jeden Punkt der Übergangsstrecke die erforderliche Querneigung und gibt den berechneten Wert als Sollwert an einen entsprechenden Neigungsregler, so daß sich eine gleichmäßige und kontinuierliche Neigungsänderung und damit eine entsprechende Qualitätsverbesserung der eingebauten Straße ergibt.In transition sections, especially before and after curves, where the cross slope changes, an on-board computer enters the length of the transition section and the difference in the cross slope that is to be maintained between the start and end point of the transition section. The on-board computer calculates the required cross slope for each point of the transition section and gives the calculated value as a target value to a corresponding inclination controller, so that there is a uniform and continuous change in inclination and thus a corresponding improvement in the quality of the installed road.

Zweckmäßigerweise wird die vorhandene, zu überbauende Unterlage als Referenz für die Einbauhöhe benutzt. Vorhandene Unebenheiten in der Unter­lage werden durch Nivellement an festgelegten Meßpunkten (Stationen) ent­lang der zu fertigenden Straße vorab ermittelt und als stationsbezogene Hö­henkorrekturen dem Bordrechner eingegeben. Beim Einbau der Schicht wird ins­besondere durch ein Meßrad, das am Tastarm eines Höhenreglers angeordnet ist, die jeweilige Höhenlage der Unterlage und die Station ermittelt. Die Er­mittlung der Höhenkorrekturwerte erfolgt auf einer zur Straßenlängsachse pa­ rallelen Linie, auf der beim Einbau das Meßrad abläuft. Entsprechend den ein­gegebenen Daten wird für jede Station die entsprechende Höhenkorrektur über an der Einbaubohle angreifende Stellglieder vorgenommen, wobei zwischen den Sta­tionen die Höhenkorrektur kontinuierlich von einem eingegebenen Wert zum an­deren in Abhängigkeit vom zurückgelegten Weg des Straßenfertigers geändert wird. Auf diese Weise werden die vorhandenen Unebenheiten der Unterlage aus­geglichen und eine praktisch ebene Schicht eingebaut.The existing base to be built over is expediently used as a reference for the installation height. Any unevenness in the base is determined in advance by leveling at defined measuring points (stations) along the road to be manufactured and entered into the on-board computer as station-related height corrections. When installing the layer, the respective height of the base and the station are determined in particular by a measuring wheel which is arranged on the probe arm of a height controller. The height correction values are determined on a pa along the longitudinal axis of the road parallel line on which the measuring wheel runs during installation. In accordance with the data entered, the corresponding height correction is carried out for each station by means of actuators acting on the screed, the height correction being changed continuously between one station from one entered value to another depending on the distance the paver has traveled. In this way, the existing unevenness of the underlay is compensated and a practically flat layer is installed.

Bei Verwendung wenigstens eines Meßrades gleichzeitig als Höhenfühler kann auf die Verwendung von Referenzdrähten oder dergleichen verzichtet wer­den.If at least one measuring wheel is used simultaneously as a height sensor, the use of reference wires or the like can be dispensed with.

Gleichzeitig kann der bordrechner dazu verwendet werden, für den Ein­satz des Straßenfertigers wichtige Daten bei der Herstellung von Straßen­befestigungen zu ermitteln, aufzubereiten, zu speichern und an jedem Punkt der Einbaustrecke bereitzustellen. Hierzu gehören die seit Einbaubeginn tatsäch­lich eingebaute Mischgutmenge bzw. deren Abweichen von einer Sollmenge, die aktuelle und durchschnittliche Vortriebsgeschwindigkeit und der sich daraus ergebende Wirkungsgrad des Einbaus.At the same time, the on-board computer can be used to determine, prepare and save data that is important for the use of the road paver in the manufacture of road pavements and to make it available at every point on the paving route. This includes the quantity of mix actually installed since the start of paving or its deviation from a target quantity, the current and average speed of advance and the resulting efficiency of paving.

Weitere Ausgestaltungen der Erfindung sind der nachfolgenden Beschrei­bung und den Unteransprüchen zu entnehmen.Further embodiments of the invention can be found in the following description and the subclaims.

Die Erfindung wird nachstehend anhand des in den beigefügten Abbil­dungen dargestellten Ausführungsbeispiels näher erläutert.

  • Fig. 1 zeigt schematisch in Draufsicht einen Straßenfertiger.
  • Fig. 2 den Straßenfertiger von Fig. 1 in Seitenansicht.
  • Fig. 3 zeigt ein Blockschaltbild eines Bordrechners für den Straßen­fertiger von Fig. 1 und 2.
The invention is explained below with reference to the embodiment shown in the accompanying figures.
  • Fig. 1 shows schematically a top view of a paver.
  • Fig. 2 shows the paver of Fig. 1 in side view.
  • FIG. 3 shows a block diagram of an on-board computer for the paver of FIGS. 1 and 2.

Der schematisch in Fig. 1 und 2 dargestellte Straßenfertiger 1 umfaßt eine Einbaubohle 2, die über Zugarme 3 an dem beispielsweise mit einem Raupen­fahrwerk 4 versehenen Fahrgestell 5 des Straßenfertigers 1 höherverstellbar angelenkt ist. Einbaumaterial, das von einem Materialkübel 6 am vorderen Ende des Fahrgestells 5 aufgenommen wird, wird der Einbaubohle 2, die sich an der Rückseite des Fahrgestells 5 befindet, zugeführt und mittels einer Verteiler­schnecke 7 über die Breite der Einbaubohle 2 verteilt, die das Einbaumaterial verdichtet mit vorbestimmter Schichtdicke einbaut.The road paver 1 shown schematically in FIGS. 1 and 2 comprises a screed 2 which is articulated in a higher adjustable manner by means of draw arms 3 on the chassis 5 of the road paver 1, for example provided with a crawler track 4. Paving material, which is picked up by a material bucket 6 at the front end of the chassis 5, is fed to the screed 2, which is located at the rear of the chassis 5, and distributed over the width of the screed 2 by means of a spreading screw 7, which compresses the paving material with built-in predetermined layer thickness.

Stellglieder 8 in Form von Stellzylindern mit beidseitig beaufschlag­baren Kolben und entsprechenden Wegeventilen 9 zum Verstellen des Kolbens und damit der Höhe der Einbaubohle 2 mit Höhenreglern 10 dienen zur Höheneinstel­lung der Einbaubohle 2 an einer oder beiden Seite hiervon. Ein Neigungsmesser an der Einbaubohle 2, der Ist-Werte für die Querneigung der Einbaubohle 2 für einen Neigungsregler 11 liefert, ist in letzteren integriert. Der Neigungs­regler 11 regelt die Querneigung der Einbaubohle 2 entsprechend einem vorgege­benen Sollwert über eines der Stellglieder 8, wobei das andere zur Höhenrege­lung dient.Actuators 8 in the form of actuating cylinders with pistons which can be acted upon on both sides and corresponding directional valves 9 for adjusting the piston and thus the height of the screed 2 with height regulators 10 serve to adjust the height of the screed 2 on one or both sides thereof. An inclinometer on the screed 2, the actual values for the cross slope of the screed 2 for provides a tilt controller 11 is integrated in the latter. The inclination controller 11 regulates the transverse inclination of the screed 2 in accordance with a predefined setpoint via one of the actuators 8, the other being used for height regulation.

Ferner sind ein oder zwei Meßräder 12 zum Messen der vom Straßenferti­ger 1 zurückgelegten Strecke vorgesehen, die auf der Unterlage für die einzu­bauende Schicht bezüglich der Einbaubohle 2 benachbart zum jeweiligen Außen­rand hiervon vorlaufen, vorzugsweise symmetrisch zur Längsachse des Straßen­fertigers 1 angeordnet und im dargestellten Ausführungsbeispiel über einen schwenkbaren Arm 13 mit einem im Höhenregler 10 integrierten Meßwertaufnehmer für die vom Meßrad 12 zurückgelegte Wegstrecke als auch für den Winkel des Arms 13 zu einer Referenzebene zum Erhalten einer Höhenmessung verbunden sind. Während die Höhenmessung ebenso wie die Neigungsmessung üblicherweise zu einem analogen Signal führt, ergibt die Wegmessung üblicherweise ein digitales Sig­nal.Furthermore, one or two measuring wheels 12 are provided for measuring the distance covered by the road paver 1, which run on the base for the layer to be installed with respect to the screed 2 adjacent to the respective outer edge thereof, preferably arranged symmetrically to the longitudinal axis of the road paver 1 and in the illustrated embodiment via a pivotable arm 13 with an integrated in the height controller 10 transducer for the distance covered by the measuring wheel 12 as well as for the angle of the arm 13 to a reference plane for obtaining a height measurement. While the height measurement and the inclination measurement usually lead to an analog signal, the distance measurement usually results in a digital signal.

Der Straßenfertiger 1 besitzt, wie in Fig. 3 dargestellt ist, einen Bordrechner 14 mit einer Eingabetastatur 15, die gleichzeitig ein Anzeige­feld aufweist, einem Mikroprozessor 16, einem Datenspeicher 17, einem ROM-­Speicher 18 für das Betriebssystem, einer Analog-Ein- und -Ausgangsstufe 19 sowie einer Digital-Ein- und -Ausgangsstufe 20. Die die Ist-Werte der Hö­hen- und Neigungsmessung darstellenden Signale werden ebenso wie die den Ist-Wert der Wegmessung darstellenden Signale dem Mikroprozessor 16 zuge­führt.As shown in FIG. 3, the road paver 1 has an on-board computer 14 with an input keyboard 15, which at the same time has a display field, a microprocessor 16, a data memory 17, a ROM memory 18 for the operating system, an analog input and - Output stage 19 and a digital input and output stage 20. The signals representing the actual values of the height and inclination measurement are fed to the microprocessor 16, as are the signals representing the actual value of the displacement measurement.

In dem Datenspeicher 17 sind über die Eingabetastatur 15 eingegebene Sollwerte für die Höhenkorrektur oder die Schichtdicke der einzubauenden Schicht stationsbezogen abgespeichert. Diese Sollwerte wurden vorab an der Einbaustrecke ermittelt. Der Mikroprozessor 16 gibt für die Stationen, d.h. in entsprechender Abhängigkeit von der Wegmessung, die im Datenspeicher 17 ge­speicherten Sollwerte den Höhenreglern 10 vor, so daß entsprechende Höhenkor­rekturen entsprechend den Unebenheiten der Unterlage vorgenommen werden. Zwi­schen den vorgegebenen Stationen, die nicht äquidistant sein müssen, erfolgt durch den Mikroprozessor 16 kontinuierlich in Abhängigkeit vom zurückgelegten Weg eine vorzugsweise lineare Änderung des Sollwertes für die Einbauhöhe von einem abgespeicherten Wert zum anderen.Setpoints for the height correction or the layer thickness of the layer to be installed, which are entered via the input keyboard 15, are stored in the data memory 17 in relation to the station. These setpoints were determined in advance on the installation section. The microprocessor 16 outputs for the stations, i.e. depending on the distance measurement, the setpoints stored in the data memory 17 before the height controllers 10, so that corresponding height corrections are made in accordance with the unevenness of the base. Between the given stations, which do not have to be equidistant, the microprocessor 16 continuously changes the setpoint for the installation height from one stored value to another, depending on the distance covered, preferably in a linear manner.

Desgleichen wird über einen vorgegebenen, gespeicherten Differenzwert der Querneigung zwischen einem Anfangs- und einem Endpunkt der Sollwert der Querneigung über den Mikroprozessor 16 kontinuierlich auf der Länge der Über­ gangsstrecke zwischen Anfangs- und Endpunkt in linearer Abhängigkeit von der Länge geändert und dem Neigungsregler 11 zugeführt.Likewise, over a predetermined, stored difference in cross slope between a start point and an end point, the set point of the cross slope is continuously measured over the length of the microprocessor 16 Gang distance between the start and end point changed in linear dependence on the length and fed to the inclination controller 11.

Bei der dargestellten Ausführungsform sind zwei Meßräder 12 mit Abstand zur mittleren Längsachse des Straßenfertigers 1 vorgesehen, die beide über Arme 13 mit entsprechenden Meßwertaufnehmern verbunden sind, so daß zwei Hö­henmessungen quer zur Fahrtrichtung des Straßenfertigers und mit Abstand zueinander vorgenommen werden.In the embodiment shown, two measuring wheels 12 are provided at a distance from the central longitudinal axis of the paver 1, both of which are connected via arms 13 to corresponding transducers, so that two height measurements are carried out transversely to the direction of travel of the paver and at a distance from one another.

Auf den Neigungsmesser und den Neigungsregler 11 kann verzichtet wer­den, wenn die Sollwerte für die Höhenkorrektur bzw. Schichtdicke seitenbe­zogen dem Bordrechner 14 eingegeben werden.The inclinometer and the inclination controller 11 can be dispensed with if the target values for the height correction or layer thickness are input to the on-board computer 14 in relation to the page.

Bei geringen Einbaubreiten kann man auch mit einem Meßrad 12, daß au­ßermittig angeordnet sein kann, zur Wegmessung auskommen, jedoch benötigt man für die Stellglieder 8 die Höhenmeßfühler.In the case of small installation widths, a measuring wheel 12, which can be arranged off-center, can make do with distance measurement, but the height sensors are required for the actuators 8.

Bei ausfahrbaren Einbaubohlen 2 können die Meßräder 12 mit den aus­fahrbaren Teilen der Einbaubohle 2 verbunden sein, so daß sie sich jeweils im Randbereich der Einbaustrecke befinden.In the case of extendable screeds 2, the measuring wheels 12 can be connected to the extendable parts of the screed 2, so that they are each located in the edge region of the pave.

Gegebenenfalls kann eine Alarmschaltung 21 zur akustischen und/oder op­tischen Anzeige, daß vorgegebene Sollwerte nicht erreicht werden können, vor­gesehen sein.If necessary, an alarm circuit 21 can be provided for the acoustic and / or visual indication that predetermined setpoints cannot be reached.

Die Stellglieder 8 sind zweckmäßigerweise auch manuell bedienbar, damit etwa bei Ausfall des Bordrechners 14 der Straßenfertiger trotzdem arbeiten kann.The actuators 8 are also expediently operable manually, so that the paver can still work if the on-board computer 14 fails.

Als Wegmeßeinrichtung können auch entsprechende Markierungen längs der Einbaustrecke abtastende Fühler verwendet werden.Corresponding markings along the installation path can also be used as sensors.

Claims (7)

1. Straßenfertiger mit einer Einbaubohle (2), die mit Stellgliedern (8) für die Höhen- und Neigungseinstellung der Einbaubohle (2) sowie Meßfühlern hierfür versehen ist, wobei die Ausgangssignale der Meßfühler als Istwerte für die Stellglieder (8) entsprechend vorgebbaren Sollwerten steuernde Regler (10, 11) denen, dadurch gekennzeichnet, daß eine Wegmeß­einrichtung (12) vorgesehen ist, deren Ausgangssignale einem Bordrechner (14) zuführbar sind, wobei der Bordrechner (14) mit einem Datenspeicher (17) zum Speichern der Länge einer Übergangsstrecke und des Differenzwertes der Querneigung, der zwischen Anfangs- und Endpunkt der Übergangsstrecke eingehalten werden soll, entlang des Einbauweges versehen ist und die dem Neigungsregler (11) vom Bordrechner (14) berechneten und vorgebbaren Soll­werte wegabhängig vom Anfangs- zum Endpunkt kontinuierlich durch den Bor­drechner (14) änderbar sind.1. road paver with a screed (2), which is provided with actuators (8) for adjusting the height and incline of the screed (2) and sensors for this purpose, the output signals of the sensors controlling actual values for the actuators (8) according to predetermined setpoints Controllers (10, 11), characterized in that a displacement measuring device (12) is provided, the output signals of which can be fed to an on-board computer (14), the on-board computer (14) having a data memory (17) for storing the length of a transition section and the Difference values of the cross slope, which is to be maintained between the start and end point of the transition section, is provided along the installation path and the setpoint values calculated and predeterminable by the on-board computer (14) for the inclination controller (11), depending on the path, continuously through the on-board computer (14) from the start to the end point. are changeable. 2. Straßenfertiger nach Anspruch 1, dadurch gekennzeichnet, daß die Wegmeßeinrichtung (12) wenigstens ein innerhalb der Arbeitsbreite der Ein­baubohle (2) mitlaufendes Meßrad umfaßt.2. Asphalt paver according to claim 1, characterized in that the displacement measuring device (12) comprises at least one measuring wheel moving within the working width of the screed (2). 3. Straßenfertiger nach Anspruch 2, dadurch gekennzeichnet, daß das Meß­rad (12) gleichzeitig als Höhenmeßfühler (13) ausgebildet ist.3. Paver according to claim 2, characterized in that the measuring wheel (12) is simultaneously designed as a height sensor (13). 4. Straßenfertiger nach einem der Ansprüche 1 bis 3, dadurch gekenn­zeichnet, daß der Datenspeicher (16) zum stationsweisen Speichern von Sollwerten für die Höhenkorrektur oder die Schichtdicke entlang des Ein­bauweges eingerichtet ist und die den Reglern (10) vom Bordrechner (14) vorgebbaren Sollwerte wegabhängig von einem gespeicherten Sollwert zum nächsten kontinuierlich durch den Bordrechner (14) berechenbar sind.4. Road paver according to one of claims 1 to 3, characterized in that the data memory (16) is set up for station-wise storage of setpoints for the height correction or the layer thickness along the installation path and the setpoints which can be predetermined by the on-board computer (14) for the controllers (10) can be continuously calculated by the on-board computer (14) depending on the path from a stored setpoint to the next. 5. Straßenfertiger nach einem der Ansprüche 1 bis 4, dadurch gekenn­zeichnet, daß die den Reglern (10, 11) zugeführten Sollwerte linear von einem gespeicherten Sollwert zum anderen änderbar sind.5. Paver according to one of claims 1 to 4, characterized in that the setpoints supplied to the controllers (10, 11) can be changed linearly from one stored setpoint to the other. 6. Straßenfertiger nach einem der Ansprüche 2 bis 5, dadurch gekenn­zeichnet, daß das oder jedes Meßrad (12) bezüglich der Einbaubohle (2) vorläuft.6. Paver according to one of claims 2 to 5, characterized in that the or each measuring wheel (12) with respect to the screed (2) leads. 7. Straßenfertiger nach einem der Ansprüche 2 bis 6, dadurch gekenn­zeichnet, daß beidseitig der Längsachse des Straßenfertigers jeweils ein Meßrad (12) vorgesehen ist.7. paver according to one of claims 2 to 6, characterized in that a measuring wheel (12) is provided on both sides of the longitudinal axis of the paver.
EP90105040A 1989-03-23 1990-03-16 Road-paving machine Withdrawn EP0388819A1 (en)

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DE3909583A DE3909583A1 (en) 1989-03-23 1989-03-23 ROAD PAVERS

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FR2669046A1 (en) * 1990-11-08 1992-05-15 Entr Malet Device for levelling correction designed to alter the setting of a levelling sensor equipping a public works machine intended for preparing or renovating roadways
DE4040029C1 (en) * 1990-12-14 1992-04-23 Joseph Voegele Ag, 6800 Mannheim, De
EP0495171A1 (en) * 1990-12-14 1992-07-22 Joseph Vögele AG Laying-down course thickness adjusting method with a finisher
DE102004003358A1 (en) * 2004-01-22 2005-08-11 Joseph Voegele Ag Method for operating a road paver
EP3112812A1 (en) 2015-07-01 2017-01-04 MOBA - Mobile Automation AG Device and method for measuring distance on a construction machine having a tracks drive and construction machine
EP3270109A1 (en) 2015-07-01 2018-01-17 MOBA - Mobile Automation AG Device and method for measuring distance on a construction machine having a tracks drive and construction machine
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EP3712328A1 (en) 2019-03-20 2020-09-23 MOBA - Mobile Automation AG Measuring system for a construction maschine and construction maschine

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US5044820A (en) 1991-09-03
JPH02282506A (en) 1990-11-20
DE3909583A1 (en) 1990-10-18

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