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EP1103658A2 - Device for controlling the compaction effect of vibrating devices - Google Patents

Device for controlling the compaction effect of vibrating devices Download PDF

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Publication number
EP1103658A2
EP1103658A2 EP00120515A EP00120515A EP1103658A2 EP 1103658 A2 EP1103658 A2 EP 1103658A2 EP 00120515 A EP00120515 A EP 00120515A EP 00120515 A EP00120515 A EP 00120515A EP 1103658 A2 EP1103658 A2 EP 1103658A2
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EP
European Patent Office
Prior art keywords
roller
compaction
compression control
control device
compression
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.)
Granted
Application number
EP00120515A
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German (de)
French (fr)
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EP1103658B1 (en
EP1103658A3 (en
Inventor
Karl Hermann Ing. grad. Mötz
Uwe Ing. grad. Blancke
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Bomag GmbH and Co OHG
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Bomag GmbH and Co OHG
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    • EFIXED CONSTRUCTIONS
    • E01CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01CCONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22Machines, 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
    • E01C19/23Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/288Vibrated rollers or rollers subjected to impacts, e.g. hammering blows adapted for monitoring characteristics of the material being compacted, e.g. indicating resonant frequency, measuring degree of compaction, by measuring values, detectable on the roller; using detected values to control operation of the roller, e.g. automatic adjustment of vibration responsive to such measurements

Definitions

  • the invention relates in particular to a device for checking the compression of black ceilings in road and path construction with a vibratory roller, which is provided with a compression control device.
  • Such compression control devices can, for example, on Pulley-mounted pulse transducers that work together with a Accelerometer method with statistical execution function.
  • It can be of such an accelerometer on the roller frame but also the impact forces that occur when the vibrating are recorded Bandage of a vibratory roller the surface to be compacted processed.
  • the temperature changes between two transitions with one machine in the asphalt layer have a non-compensable Influence.
  • the object of the present invention is therefore to provide a device for To further develop compaction control in such a way that Black ceilings in road and path construction provides measurement data and results, which do not have the disadvantages mentioned above.
  • the device has a second vibration roller for compaction control, which with a is provided second compression control device and with the first vibratory roller coupled this essentially tracking true is, wherein an evaluation unit is available, the measurement results of the two compaction control devices.
  • the invention has the advantage that with the first vibrating roller coupled second vibratory roller the second transition in time so immediately The following is to be achieved between the two transitions lying period with regard to a temperature change in the asphalt layer can be neglected. Furthermore, through the existing evaluation unit, which the measurement results of the two in the first and the second vibration roller associated compression control devices compared, also influences are compensated, if due to the existing measuring depth the stiffness of the under the asphalt layers lying surface is measured proportionately. This The influence of the underground stiffness can be determined by the difference in the measurement results be eliminated in the comparison.
  • the invention is also based on the finding that the change the asphalt stiffness is a fairly good reference value for the increase in Progress of compaction of the asphalt is.
  • This track-true coupling can most advantageously be done in a tandem roller to reach.
  • the vibratory rollers to be provided in two separate single drum rollers, which in particular coupled with each other via a computer-aided tracking process are.
  • This computer-aided tracking method for example use of satellite-based global positioning systems (GPS) become.
  • GPS global positioning systems
  • the two tracked rollers can also be coupled with each other via radar, ultrasound, infrared etc. his. Of course, a rigid coupling via a Pole possible.
  • the two compression control devices provided are calibratable, so differences in the To be able to compensate for the measured value recording
  • the two vibratory rollers on elements with known ones and / or set up the same dynamic stiffness, for example Blocks of elastic material, and then the resulting Compare measured values.
  • the Evaluation unit advantageously also contain a delay element, with which the measurement results of the first compression control device are to be temporarily stored in order to be compared to the identifying location with the measurement results of the second compression control device.
  • the holding time of the delay element depends is the driving speed and the distance between the two coupled vibratory rollers.
  • FIG 1 you can see a compression device in the form of a known Tandem roller with two vibrating rollers, the outside of the conventional Has structure.
  • the compactor has a front roller 1, the front structure 2a is attached to which the driver's cab Tandem roller is located, and a rear roller 3, which is part of the rear Structure 2b, which is also the drive motor of the compactor contains.
  • the two bodies are used to steer this tandem roller 2a and 2b connected to one another via an articulated joint 4.
  • FIG. 2 shows a sketch in which it can be seen that the front one Roll 1 provided with a first compression control device 5 is, like the second vibrating roller 3, with a second compression control device 6 is provided.
  • These compaction control devices 5 and 6 operate in the manner known from earth compaction by they determine the dynamic ground stiffness. You determine in here illustrated example the overall dynamic stiffness of both of them compacted asphalt layer 7, as well as proportionately the stiffness of the underlying, already compacted subsoil 8.
  • the determined by the two compression control devices 5 and 6 dynamic overall stiffness are sent as measurement results to an evaluation unit 9 forwarded by the front and rear Compression control device compared measurement results obtained. This is done by comparing the measured stiffness at the front or rear roller the increase in stiffness resulting from the Crossings of the rollers determined. If the increase is small, the compression can the asphalt layer 7 can be assumed to be completed.
  • the influence is also determined by forming a difference in the evaluation unit 9 the underground rigidity eliminated.
  • the one from the evaluation unit 9 The result of the display device 10 is thus a direct measure of the compaction of the asphalt layer 7.
  • This display device 10 may, for example, be a But the pointer instrument indicating the difference in compression also acts a light-emitting diode display, the traffic light-like an adequate or still insufficient compression is signaled.
  • Example to compensate for roll specific differences in the control devices also provided calibration elements 11 with which For example, different roller weights can be compensated for.
  • To the rest with the display unit 10 that determined with the rollers 1 or 3 To compare the measured value for the same ground location is in the Evaluation unit 9 also integrates a delay element 12. Whose Holding time for the delayed transfer from the front roller 1 determined Measured value depends on the distance between the front Roller 1 and the rear roller 3 and the speed accordingly arrow 13 in FIGS. 1 and 2.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

Die Erfindung betrifft eine Vorrichtung zur Verdichtungskontrolle, insbesondere von Schwarzdecken im Straßen- und Wegebau, mit einer Vibrationswalze, die mit einer Verdichtungskontrollvorrichtung versehen ist. Bei der Verdichtung von Schwarzdecken können die aus der Erdverdichtung bekannten Meßmethoden der dynamischen Bodensteifigkeit zur Ermittlung des erreichten Verdichtungszustandes nicht eingesetzt werden, da sich die Asphaltsteifigkeit zwischen zwei Messungen mit der Temperatur ändert und außerdem die Untergrundsteifigkeit jeweils anteilig mitgemessen wird. Um diese Probleme zu lösen wird eine zweite Vibrationswalze vorgesehen, die mit einer zweiten Verdichtungskontrollvorrichtung versehen ist, wobei die zweite Vibrationswalze mit der ersten Vibrationswalze diese im wesentlichen spurgetreu verfolgend gekoppelt ist. Hierdurch wird für die Gegenüberstellung der ermittelten Meßwerte die Temperaturabhängigkeit der ermittelten Meßwerte elementiert. Des weiteren ist eine Auswerteeinheit vorhanden, die die Meßergebnisse der beiden Verdichtungskontrollvorrichtungen gegenüberstellt. Hierdurch wird die Untergrundsteifigkeit in den Meßwerten eliminiert.

Figure 00000001
The invention relates to a device for compaction control, in particular of black ceilings in road and path construction, with a vibrating roller which is provided with a compaction control device. When compacting black ceilings, the dynamic soil rigidity measurement methods known from soil compaction cannot be used to determine the compaction status achieved, since the asphalt rigidity changes with the temperature between two measurements and the underground rigidity is also measured proportionately. In order to solve these problems, a second vibrating roller is provided, which is provided with a second compression control device, the second vibrating roller being coupled to the first vibrating roller in a substantially true-to-track manner. In this way, the temperature dependence of the measured values determined is compared for the comparison of the measured values determined. There is also an evaluation unit which compares the measurement results of the two compression control devices. This eliminates the background stiffness in the measured values.
Figure 00000001

Description

Die Erfindung betrifft eine Vorrichtung zur Verdichtungskontrolle insbesondere von Schwarzdecken im Straßen- und Wegebau mit einer Vibrationswalze, die mit einer Verdichtungskontrollvorrichtung versehen ist.The invention relates in particular to a device for checking the compression of black ceilings in road and path construction with a vibratory roller, which is provided with a compression control device.

Es ist altbekannt, daß bei der Bearbeitung von Boden mit Verdichtungsgeräten durch die Anwendung von ständigen Verdichtungskontrollen eine wirtschaftlichere Bauausführung möglich ist. Üblicherweise basieren solche Verdichtungskontrollvorrichtungen darauf, daß während der Vibrationsverdichtung des Bodens die Reflektion der Schwingungen gemessen werden, die vom Verdichtungsgerät übertragen werden: Von einem sehr lockeren Material wird kaum Vibrationsenergie zurückreflektiert, bereits stark verdichteter Boden oder im Extremfall eine massive Betonplatte, gibt dagegen praktisch die volle Schwingungsenergie an eine Vibrationswalze zurück.It is well known that when working soil with compaction equipment through the use of constant compaction controls more economical construction is possible. Usually such are based Compaction control devices take care that during vibration compaction of the floor the reflection of the vibrations are measured transmitted by the compactor: from a very loose one Material is hardly reflected back by vibrational energy, it is already highly compressed Floor or in extreme cases a solid concrete slab, on the other hand, gives practically the full vibrational energy back to a vibratory roller.

Derartige Verdichtungskontrollvorrichtungen können beispielsweise am Walzenrahmen befestigte Impuls-Wandler sein, die zusammen mit einem Beschleunigungs-Meßverfahren mit statistischer Ausführung fungieren.Such compression control devices can, for example, on Pulley-mounted pulse transducers that work together with a Accelerometer method with statistical execution function.

Es können von einem derartigen Beschleunigungsgeber am Walzenrahmen aber auch die Schlagkräfte registriert werden, die auftreten, wenn die vibrierende Bandage einer Vibrationswalze die zu verdichtende Oberfläche bearbeitet.It can be of such an accelerometer on the roller frame but also the impact forces that occur when the vibrating are recorded Bandage of a vibratory roller the surface to be compacted processed.

Wenn sich bei derartigen Verdichtungskontrollvorrichtungen trotz zunehmender Anzahl von Verdichtungsübergängen die Verdichtung nicht mehr ändert, ist die mit diesem bestimmten Verdichtungsgerät erzielbare höchste Dichte erreicht. Diese Dichte ist bereits überschritten, wenn der ermittelte Wert wieder absinkt, da eine Auflockerung eintritt. If with such compression control devices despite increasing Number of compression transitions the compression no longer changes, is the achievable with this particular compactor highest density reached. This density is already exceeded when the determined value drops again, as a loosening occurs.

Derartige Verdichtungskontrollvorrichtungen stoßen aber an ihre Grenzen, wenn es um die Verdichtung von Schwarzdecken geht:Such compression control devices reach their limits, when it comes to compaction of black ceilings:

Bei der Ermittlung der dynamischen Bodensteifigkeit mit den oben beschriebenen bekannten Methoden auf Asphaltschichten kann die Steifigkeit und damit die Dichtigkeit der Asphaltschicht nicht genau ermittelt werden, da die Steifigkeit der Asphaltschicht in hohem Maße temperaturabhängig ist. Eine genaue Temperaturmessung der Asphaltschicht ist nicht möglich. Insbesondere kann die leicht zu ermittelnde Oberflächentemperatur der Asphaltschicht nicht als Maß genommen werden für die Temperatur der gesamten Schicht, unter anderem auch, da die Temperatur der Oberflächenschicht zu stark von Umgebungseinflüssen wie herrschendem Wind oder Regen abhängig ist, die aber keinen Einfluß auf die Temperatur im Inneren der Asphaltschicht haben.When determining the dynamic floor stiffness with those described above Known methods on asphalt layers can reduce stiffness and so that the tightness of the asphalt layer cannot be determined exactly, because the rigidity of the asphalt layer is largely temperature-dependent is. An exact temperature measurement of the asphalt layer is not possible. In particular, the easy-to-determine surface temperature of the Asphalt layer should not be taken as a measure of the temperature of the entire layer, including because of the temperature of the surface layer too strong from environmental influences such as prevailing wind or Rain is dependent, but does not affect the temperature inside the asphalt layer.

Letztlich sind somit die bei Überfahrt mit bekannten Verdichtungskontrollvorrichtungen ermittelten Werte im Schwarzdeckenbau für die Feststellung der Verdichtung der Asphaltschicht nicht aussagekräftig genug im Hinblick auf die Abhängigkeit der dynamischen Steifigkeit der Asphaltschicht von der in ihr herrschenden Temperatur.Ultimately, therefore, when crossing with known compression control devices determined values in black ceiling construction for the determination the compaction of the asphalt layer is not meaningful enough on the dependence of the dynamic stiffness of the asphalt layer on the temperature in it.

Damit ist insbesondere der bisher bei der Bodenverdichtung beschrittene Weg versperrt, die bei einer ersten Überfahrt mit einer eine Verdichtungskontrollvorrichtung aufweisenden Vibrationswalze ermittelten Werte abzuspeichern und mit den bei einer zweiten Überfahrt ermittelten Werten zu vergleichen, um von den Unterschieden auf die Verdichtung zu schließen. Die zwischen zwei Übergängen mit einer Maschine auftretenden Temperaturveränderungen in der Asphaltschicht haben einen nicht kompensierbaren Einfluß.This is particularly the one that has been used in soil compaction to date Path blocked when a first crossing with a compression control device having the determined vibration roller and with the values determined during a second crossing compare to deduce the differences from the differences. The temperature changes between two transitions with one machine in the asphalt layer have a non-compensable Influence.

Aufgabe der vorliegenden Erfindung ist es daher, eine Vorrichtung zur Verdichtungskontrolle dahingehend weiterzubilden, daß sie auch bei Schwarzdecken im Straßen- und Wegebau Meßdaten und Ergebnisse liefert, die die obengenannten Nachteile nicht aufweisen. The object of the present invention is therefore to provide a device for To further develop compaction control in such a way that Black ceilings in road and path construction provides measurement data and results, which do not have the disadvantages mentioned above.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die Vorrichtung zur Verdichtungskontrolle eine zweite Vibrationswalze aufweist, die mit einer zweiten Verdichtungskontrollvorrichtung versehen ist und die mit der ersten Vibrationswalze diese im wesentlichen spurgetreu verfolgend gekoppelt ist, wobei eine Auswerteeinheit vorhanden ist, die die Meßergebnisse der beiden Verdichtungskontrollvorrichtungen gegenüberstellt.This object is achieved in that the device has a second vibration roller for compaction control, which with a is provided second compression control device and with the first vibratory roller coupled this essentially tracking true is, wherein an evaluation unit is available, the measurement results of the two compaction control devices.

Die Erfindung hat den Vorteil, daß durch die mit der ersten Vibrationswalze gekoppelte zweite Vibrationswalze der zweite Übergang zeitlich so unmittelbar folgend zu erreichen ist, daß der zwischen den beiden Übergängen liegende Zeitraum im Hinblick auf eine Temperaturänderung in der Asphaltschicht vernachlässigt werden kann. Desweiteren können durch die vorhandene Auswerteeinheit, die die Meßergebnisse der beiden in der ersten bzw. der zweiten Vibrationswalze zugeordneten Verdichtungskontrollvorrichtungen gegenüberstellt, auch Einflüsse kompensiert werden, wenn aufgrund der vorhandenen Meßtiefe die Steifigkeit des unter den Asphaltschichten liegenden Untergrundes anteilig mitgemessen wird. Dieser Einfluß der Untergrundsteifigkeit kann durch Differenzbildung bei den Meßergebnissen bei der Gegenüberstellung eliminiert werden.The invention has the advantage that with the first vibrating roller coupled second vibratory roller the second transition in time so immediately The following is to be achieved between the two transitions lying period with regard to a temperature change in the asphalt layer can be neglected. Furthermore, through the existing evaluation unit, which the measurement results of the two in the first and the second vibration roller associated compression control devices compared, also influences are compensated, if due to the existing measuring depth the stiffness of the under the asphalt layers lying surface is measured proportionately. This The influence of the underground stiffness can be determined by the difference in the measurement results be eliminated in the comparison.

Der Erfindung liegt dabei auch die Erkenntnis zugrunde, daß die Änderung der Asphaltsteifigkeit ein recht guter Referenzwert für die Zunahme des Verdichtungsfortschrittes des Asphaltes ist.The invention is also based on the finding that the change the asphalt stiffness is a fairly good reference value for the increase in Progress of compaction of the asphalt is.

Durch die erfindungsgemäße Kopplung der beiden Vibrationswalzen, durch die eine im wesentlichen spurgetreue Verfolgung der ersten durch die zweite Vibrationswalze ermöglicht wird, wird noch eine Besonderheit im Schwarzdeckenbau berücksichtigt, die einen erheblichen Unterschied zur üblichen Bodenverdichtung mit Vibrationswalzen darstellt: Während bei den üblichen Verdichtungsvorgängen die einzelnen Verdichtungsbahnen Spur an Spur parallel nebeneinanderliegen, wird im Schwarzdeckenbau zur Verhinderung von Rillenbildungen ein schleifen- und meanderförmiger Fahrweg gewählt, der bei einem separaten zweiten Übergang normalerweise nicht reproduzierbar ist.By coupling the two vibratory rollers according to the invention which is an essentially faithful pursuit of the first by the second vibratory roller is still a special feature in Black roof construction is taken into account, which makes a significant difference to usual soil compaction with vibratory rollers: While at the usual compression processes, the individual compression tracks Laying next to each other in parallel, track by track, is becoming Prevention of grooving a loop and meandering Route selected, which is normally the case with a separate second transition is not reproducible.

Durch die spurgetreue Koppelung der beiden Vibrationswalzen ist diese Problematik überwunden.Due to the true-to-track coupling of the two vibratory rollers, this is Overcome problems.

Am vorteilhaftesten läßt sich diese spurgetreue Kopplung in einer Tandemwalze erreichen. Es liegt aber auch im Rahmen der Erfindung, die Vibrationswalzen in zwei separaten Walzenzügen vorzusehen, die dann insbesondere über ein rechnergestütztes Nachführverfahren miteinander gekoppelt sind. Bei diesem rechnergestützten Nachführverfahren kann beispielsweise auf satellitengestützte Global-Positioning-Systeme (GPS) zurückgegriffen werden. Die beiden einander nachgeführten Walzenzüge können aber auch über Radar, Ultraschall, Infrarot etc. miteinander gekoppelt sein. Selbstverständlich ist auch eine starre Koppelung über eine Stange möglich.This track-true coupling can most advantageously be done in a tandem roller to reach. But it is also within the scope of the invention, the vibratory rollers to be provided in two separate single drum rollers, which in particular coupled with each other via a computer-aided tracking process are. With this computer-aided tracking method, for example use of satellite-based global positioning systems (GPS) become. The two tracked rollers can also be coupled with each other via radar, ultrasound, infrared etc. his. Of course, a rigid coupling via a Pole possible.

Es hat sich als vorteilhaft herausgestellt, daß die zwei vorgesehenen Verdichtungskontrollvorrichtungen kalibrierbar sind, um so Unterschiede in der Meßwertaufnahme ausgleichen zu können. Insbesondere wird für die Kalibrierung vorgeschlagen, die zwei Vibrationswalzen auf Elemente mit bekannten und/oder gleichen dynamischen Steifigkeiten aufzusetzen, beispielsweise Blöcke aus elastischem Material, und dann die sich ergebenden Meßwerte abzugleichen.It has been found to be advantageous that the two compression control devices provided are calibratable, so differences in the To be able to compensate for the measured value recording In particular, for calibration proposed the two vibratory rollers on elements with known ones and / or set up the same dynamic stiffness, for example Blocks of elastic material, and then the resulting Compare measured values.

Für die während des Verdichtungsprozesses ermittelten Werte sollte die Auswerteeinheit vorteilhafterweise noch ein Verzögerungselement enthalten, mit dem die Meßergebnisse der ersten Verdichtungskontrollvorrichtung zwischenzuspeichern sind zum ermittlungsortidentischen Gegenüberstellen mit den Meßergebnissen der zweiten Verdichtungskontrollvorrichtung.For the values determined during the compression process, the Evaluation unit advantageously also contain a delay element, with which the measurement results of the first compression control device are to be temporarily stored in order to be compared to the identifying location with the measurement results of the second compression control device.

Es ist einleuchtend, daß die Haltezeit des Verzögerungselementes abhängig ist von der Fahrgeschwindigkeit und dem Abstand der beiden miteinander gekoppelten Vibrationswalzen. It is obvious that the holding time of the delay element depends is the driving speed and the distance between the two coupled vibratory rollers.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der nachfolgenden Beschreibung eines Ausführungsbeispiels. Dabei zeigt

Figur 1
eine Seitenansicht eines Verdichtungsgerätes, bei dem eine erfindungsgemäße Vorrichtung vorgesehen ist;
Figur 2
eine schematische Skizze, an der die Verdichtungskontrollvorrichtungen im Zusammenhang mit der Auswerteeinheit dargestellt sind.
Further advantages and features of the invention result from the following description of an exemplary embodiment. It shows
Figure 1
a side view of a compression device, in which a device according to the invention is provided;
Figure 2
is a schematic sketch showing the compression control devices in connection with the evaluation unit.

In Figur 1 erkennt man ein Verdichtungsgerät in Form einer bekannten Tandemwalze mit zwei Vibrationswalzen, das äußerlich den herkömmlichen Aufbau aufweist. Das Verdichtungsgerät hat eine vordere Walze 1, die am vorderen Aufbau 2a befestigt ist, an dem sich auch der Führerstand der Tandemwalze befindet, und eine hintere Walze 3, die Bestandteil des hinteren Aufbaues 2b ist, das auch den Antriebsmotor des Verdichtungsgerätes enthält. Zur Lenkbarkeit dieser Tandemwalze sind die beiden Aufbauten 2a und 2b über ein Pendelknickgelenk 4 miteinander verbunden.In Figure 1 you can see a compression device in the form of a known Tandem roller with two vibrating rollers, the outside of the conventional Has structure. The compactor has a front roller 1, the front structure 2a is attached to which the driver's cab Tandem roller is located, and a rear roller 3, which is part of the rear Structure 2b, which is also the drive motor of the compactor contains. The two bodies are used to steer this tandem roller 2a and 2b connected to one another via an articulated joint 4.

In der Figur 2 ist eine Skizze dargestellt, in der man erkennt, daß die vordere Walze 1 mit einer ersten Verdichtungskontrollvorrichtung 5 versehen ist, wie auch die zweite Vibrationswalze 3 mit einer zweiten Verdichtungskontrollvorrichtung 6 versehen ist. Diese Verdichtungskontrollvorrichtungen 5 und 6 arbeiten in der aus der Erdverdichtung bekannten Weise, indem sie die dynamische Bodensteifigkeit ermitteln. Sie ermitteln dabei im hier dargestellten Beispiel die dynamische Gesamtsteifigkeit sowohl der von ihnen verdichteten Asphaltschicht 7, als auch anteilig die Steifigkeiten des darunter befindlichen, bereits verdichteten Untergrundes 8.FIG. 2 shows a sketch in which it can be seen that the front one Roll 1 provided with a first compression control device 5 is, like the second vibrating roller 3, with a second compression control device 6 is provided. These compaction control devices 5 and 6 operate in the manner known from earth compaction by they determine the dynamic ground stiffness. You determine in here illustrated example the overall dynamic stiffness of both of them compacted asphalt layer 7, as well as proportionately the stiffness of the underlying, already compacted subsoil 8.

Die von den beiden Verdichtungskontrollvorrichtungen 5 und 6 ermittelten dynamischen Gesamtsteifigkeiten werden als Meßergebnisse an eine Auswerteeinheit 9 weitergeleitet, die die von der vorderen bzw. der hinteren Verdichtungskontrollvorrichtung erhaltenen Meßergebnisse gegenüberstellt. Dabei wird durch Vergleich der gemessenen Steifigkeit an der vorderen bzw. hinteren Walze die Zunahme der Steifigkeit resultierend aus den Überfahrten der Walzen ermittelt. Wird die Zunahme gering, kann die Verdichtung der Asphaltschicht 7 als abgeschlossen angenommen werden.The determined by the two compression control devices 5 and 6 dynamic overall stiffness are sent as measurement results to an evaluation unit 9 forwarded by the front and rear Compression control device compared measurement results obtained. This is done by comparing the measured stiffness at the front or rear roller the increase in stiffness resulting from the Crossings of the rollers determined. If the increase is small, the compression can the asphalt layer 7 can be assumed to be completed.

Da die vordere Walze 1 und die hintere Walze 3 über den Aufbau 2 mit einem relativ kurzen Abstand zwischeneinander gekoppelt sind, vergeht zwischen den Überfahrten der vorderen Walze 1 und der hinteren Walze 2 an der gleichen Stelle nur eine sehr geringe Zeitdauer, so daß sich die Temperatur des Asphaltes, von der die Steifigkeit der Asphaltschicht neben der Verdichtung noch abhängt, nicht ändert. Die mit der ersten und der zweiten Verdichtungskontrollvorrichtung ermittelten Werte sind somit, da sie bei quasi gleicher Temperatur ermittelt wurden, von dieser unabhängig.Since the front roller 1 and the rear roller 3 over the structure 2 with a relatively short distance between them passes between the crossings of the front roller 1 and the rear roller 2 the same place only a very short period of time, so that the temperature of the asphalt, of which the rigidity of the asphalt layer next to the Compression still depends, does not change. The one with the first and the second Compression control device values are thus, since they are at quasi the same temperature were determined, regardless of this.

Durch eine Differenzbildung in der Auswerteeinheit 9 wird auch der Einfluß der Untergrundsteifigkeit eliminiert. Das von der Auswerteeinheit 9 an eine Anzeigevorrichtung 10 übermittelte Ergebnis ist somit ein direktes Maß für die erreichte Verdichtung der Asphaltschicht 7.The influence is also determined by forming a difference in the evaluation unit 9 the underground rigidity eliminated. The one from the evaluation unit 9 The result of the display device 10 is thus a direct measure of the compaction of the asphalt layer 7.

Bei dieser Anzeigevorrichtung 10 kann es sich beispielsweise um ein den Verdichtungsunterschied anzeigendes Zeigerinstrument handeln aber auch eine Leuchtdiodenanzeige, die ampelartig eine ausreichende oder noch nicht ausreichende Verdichtung signalisiert.This display device 10 may, for example, be a But the pointer instrument indicating the difference in compression also acts a light-emitting diode display, the traffic light-like an adequate or still insufficient compression is signaled.

Um die von den Verdichtungskontrollvorrichtungen 5 und 6 gelieferten Meßwerte direkt miteinander vergleichen zu können, sind im hier dargestellten Beispiel zum Ausgleich von walzenspezifischen Unterschieden in den Kontrollvorrichtungen noch Kalibrierelemente 11 vorgesehen, mit denen beispielsweise unterschiedliche Walzengewichte ausgleichbar sind. Um im übrigen mit der Anzeigeeinheit 10 den mit den Walzen 1 oder 3 ermittelten Meßwert für die gleiche Bodenstelle zu vergleichen, ist in der Auswerteeinheit 9 noch ein Verzögerungselement 12 integriert. Dessen Haltedauer zur verzögerten Weitergabe von der vorderen Walze 1 ermittelten Meßwertes ist abhängig von dem Abstand zwischen der vorderen Walze 1 und der hinteren Walze 3 sowie von der Geschwindigkeit entsprechend dem Pfeil 13 in den Figuren 1 und 2.To those supplied by the compression control devices 5 and 6 To be able to compare measured values directly with one another is shown in the figure below Example to compensate for roll specific differences in the control devices also provided calibration elements 11 with which For example, different roller weights can be compensated for. To the rest with the display unit 10 that determined with the rollers 1 or 3 To compare the measured value for the same ground location is in the Evaluation unit 9 also integrates a delay element 12. Whose Holding time for the delayed transfer from the front roller 1 determined Measured value depends on the distance between the front Roller 1 and the rear roller 3 and the speed accordingly arrow 13 in FIGS. 1 and 2.

Es sei noch erwähnt, daß die Walze 3 im hier dargesellten Beispiel der Walze 1 aufgrund der mechanischen Kopplung im Aufbau 2 und dem Pendelknickgelenk 4 im wesentlichen spurgetreu folgt, so daß es sich bei dem mit den beiden Walzen 1 und 3 ermittelten Werten um Meßwerte jeweils identischer Stellen handelt.It should also be mentioned that the roller 3 in the example shown here Roller 1 due to the mechanical coupling in the structure 2 and the pendulum articulation 4 essentially follows true to track, so that it is the with the two rollers 1 and 3 determined values by measured values in each case identical places.

Claims (6)

Vorrichtung zur Verdichtungskontrolle, insbesondere von Schwarzdecken im Straßen- und Wegebau, mit einer Vibrationswalze (1), die mit einer Verdichtungskontrollvorrichtung (5) versehen ist,
dadurch gekennzeichnet,
daß sie eine zweite Vibrationswalze (3) aufweist, die mit einer zweiten Verdichtungskontrollvorrichtung (6) versehen ist und die mit der ersten Vibrationswalze (1) diese im wesentlichen spurgetreu verfolgend gekoppelt ist, wobei eine Auswerteeinheit (9) vorhanden ist, die die Meßergebnisse der beiden Verdichtungskontrollvorrichtungen (5, 6) gegenüberstellt.
Device for checking the compaction, in particular of black ceilings in road and path construction, with a vibration roller (1) which is provided with a compaction control device (5),
characterized,
that it has a second vibrating roller (3), which is provided with a second compression control device (6) and which is coupled to the first vibrating roller (1) following it essentially in a true-to-track manner, an evaluation unit (9) being present which measures the measurement results of the contrasts two compression control devices (5, 6).
Vorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Vibrationswalzen (1, 3) in einer Tandemwalze gekoppelt sind.
Device according to claim 1,
characterized,
that the vibrating rollers (1, 3) are coupled in a tandem roller.
Vorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Vibrationswalzen in zwei separaten Walzenzügen sind, die über ein rechnergestütztes Nachführverfahren miteinander gekoppelt sind.
Device according to claim 1,
characterized,
that the vibrating rollers are in two separate roller trains, which are coupled to one another via a computer-aided tracking process.
Vorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die zwei Verdichtungskontrollvorrichtungen (5, 6) kalibrierbar (11) sind.
Device according to claim 1,
characterized,
that the two compression control devices (5, 6) can be calibrated (11).
Vorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Auswerteeinheit (9) ein Verzögerungselement (12) enthält, mit dem die Meßergebnisse der ersten Verdichtungskontrollvorrichtung (5) zwischenzuspeichern sind, zum ermittlungsortidentischen Gegenüberstellen mit den Meßergebnissen der zweiten Verdichtungskontrollvorrichtung (6).
Device according to claim 1,
characterized,
that the evaluation unit (9) contains a delay element (12) with which the measurement results of the first compression control device (5) are to be temporarily stored, for comparison with the determination location identical to the measurement results of the second compression control device (6).
Vorrichtung gemäß Anspruch 1,
dadurch gekennzeichnet,
daß der Auswerteeinheit (9) eine optische Anzeigeeinheit (10) zugeordnet ist.
Device according to claim 1,
characterized,
that the evaluation unit (9) is assigned an optical display unit (10).
EP00120515A 1999-11-26 2000-09-20 Device and method for controlling the compaction effect of vibrating devices Expired - Lifetime EP1103658B1 (en)

Applications Claiming Priority (2)

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DE19956943 1999-11-26
DE19956943.6A DE19956943B4 (en) 1999-11-26 1999-11-26 Device for controlling the compaction in vibration compaction devices

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EP1103658A3 EP1103658A3 (en) 2003-04-02
EP1103658B1 EP1103658B1 (en) 2010-04-21

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EP (1) EP1103658B1 (en)
JP (1) JP4012681B2 (en)
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EP2148005A1 (en) * 2008-07-24 2010-01-27 Ammann Czech Republic, a.s. Tandem vibratory roller
EP2666908A1 (en) * 2012-05-24 2013-11-27 Universiteit Twente Real-time method for automated prediction of internal layer temperature of paving material during paving operations
EP2458088A3 (en) * 2010-11-26 2016-10-05 BOMAG GmbH Mobile device for compacting a soil layer structure and method for determining the layer-E module of a top layer in this soil layer structure
CN109444206A (en) * 2018-11-26 2019-03-08 招商局重庆交通科研设计院有限公司 Bituminous pavement quality determining method and device
CN113373764A (en) * 2021-04-20 2021-09-10 黑龙江工程学院 Pavement continuous compaction quality monitoring method, acquisition terminal, monitoring terminal and system

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EP2148005A1 (en) * 2008-07-24 2010-01-27 Ammann Czech Republic, a.s. Tandem vibratory roller
EP2458088A3 (en) * 2010-11-26 2016-10-05 BOMAG GmbH Mobile device for compacting a soil layer structure and method for determining the layer-E module of a top layer in this soil layer structure
EP2666908A1 (en) * 2012-05-24 2013-11-27 Universiteit Twente Real-time method for automated prediction of internal layer temperature of paving material during paving operations
CN109444206A (en) * 2018-11-26 2019-03-08 招商局重庆交通科研设计院有限公司 Bituminous pavement quality determining method and device
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CN113373764A (en) * 2021-04-20 2021-09-10 黑龙江工程学院 Pavement continuous compaction quality monitoring method, acquisition terminal, monitoring terminal and system

Also Published As

Publication number Publication date
DE50015908D1 (en) 2010-06-02
DE19956943B4 (en) 2020-03-19
ATE465300T1 (en) 2010-05-15
US6551019B1 (en) 2003-04-22
EP1103658B1 (en) 2010-04-21
JP2001193011A (en) 2001-07-17
DE19956943A1 (en) 2001-05-31
JP4012681B2 (en) 2007-11-21
EP1103658A3 (en) 2003-04-02

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