EP0704575B1 - Method and apparatus for dynamically compacting of soil - Google Patents

Method and apparatus for dynamically compacting of soil Download PDF

Info

Publication number
EP0704575B1
EP0704575B1 EP95110476A EP95110476A EP0704575B1 EP 0704575 B1 EP0704575 B1 EP 0704575B1 EP 95110476 A EP95110476 A EP 95110476A EP 95110476 A EP95110476 A EP 95110476A EP 0704575 B1 EP0704575 B1 EP 0704575B1
Authority
EP
European Patent Office
Prior art keywords
roller
exciting
shafts
phase position
adjusted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP95110476A
Other languages
German (de)
French (fr)
Other versions
EP0704575A2 (en
EP0704575A3 (en
Inventor
Uwe Blancke
Karl-Hermann Mötz
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.)
Bomag GmbH and Co OHG
Original Assignee
Bomag GmbH and Co OHG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Bomag GmbH and Co OHG filed Critical Bomag GmbH and Co OHG
Publication of EP0704575A2 publication Critical patent/EP0704575A2/en
Publication of EP0704575A3 publication Critical patent/EP0704575A3/en
Application granted granted Critical
Publication of EP0704575B1 publication Critical patent/EP0704575B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/288—Vibrated 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
    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/28—Vibrated rollers or rollers subjected to impacts, e.g. hammering blows
    • E01C19/286—Vibration or impact-imparting means; Arrangement, mounting or adjustment thereof; Construction or mounting of the rolling elements, transmission or drive thereto, e.g. to vibrator mounted inside the roll

Definitions

  • the invention relates to a method and a device for dynamic compaction of soil with at least a movable roller that vibrates performs by an adjustable in its direction Vibrating force acts on the roller, so that either horizontal thrust and / or vertical Pressure forces are exerted on the ground.
  • the present application is based on the task to further improve this compression system and in particular over-compaction of the soil with local Grain crushing and deformation of the road surface to exclude.
  • This task is regarding the procedural features solved in that the vibratory movement of the roller or a part connected to it is detected and that in the event of a disturbance of the basic roller vibration vertical part of the vibration force up to the approximate Fixing the fault is reduced.
  • the invention is based on the knowledge that with increasing compaction of the soil and accordingly increasing soil hardness the compaction roller to Jumping tends to not only cause the compaction roller the compression quality is also subject to high mechanical stress decreases. The driver can do this Jumping is usually inadequate physically or visually perceive and then cancel the compaction process, which is mostly too late.
  • the present invention for jumping and the Overdensification responsible part of the vibration movement reduce in time and compression instead increased horizontal thrust switch, where jumping is impossible is.
  • the invention can be used as an anti-jump lock, on the other hand, as an over-compression barrier be considered . It therefore also allows work with higher vibration amplitudes than before, because damage to the roller from hard floors are no longer possible.
  • the disturbances caused by jumping the basic vibration of the roll are available to the expert various possibilities. It can be the amplitude the vibration movement or a derivative thereof, in particular the acceleration. So takes, for example, the vertical portion of the acceleration if the roller loses contact with the ground.
  • the period of the Vibration movement can be detected because here when jumping almost doubling occurs.
  • Compaction process is done by a compactor with at least two parallel or aligned to the roller axis arranged, rotating in opposite directions synchronously Excitation waves, their position and / or phase position is so variable that its resulting Centrifugal force optionally horizontal thrust and / or exerts vertical pressure on the ground.
  • the invention Process is then implemented in such a way that the roller or a part connected to it with a motion sensor to record the vibration movement is in operative connection and that the motion sensor is connected to a control loop that the position in the event of a disturbance of the basic roller vibration and / or phase position of the excitation waves in the sense adjusted to reduce the vertical pressure forces.
  • the excitation waves are arranged approximately horizontally next to each other are and the adjustment between horizontal and vertical centrifugal forces by changing the phase position of the excitation waves is effected like this in itself is known.
  • the excitation shafts are usually above gear wheels in operative connection with each other so that for adjustment the phase position of an excitation wave is fixable Rotary bearing between it and the one assigned to it Gear can be used.
  • This pivot bearing suitably consists of one connected to the gear Adjustable helix, axially screwable is an adjustment axis that is axially displaceable, however is rotatably connected to the excitation shaft.
  • the phase position should be over 150 °, especially to almost Can be adjusted 360 °.
  • excitation waves to store in a rack that is one to them parallel axis swiveling and in the desired Swivel position can be determined.
  • FIG. 2 schematically shows the two excitation waves 5 and 6, each arranged inside the roller 1 and 3 are.
  • both excitation waves lie horizontally next to each other and they keep this position regardless of the roll rotation and regardless of whether vertical pressure forces, horizontal shear forces or a combination thereof should be generated. They turn in opposite directions, can but relative to the phase position of their unbalances be twisted towards each other.
  • the roller 1 is in a manner known per se at one Front side on ball bearings 7 and rubber elements 8 a support 9, on the other side via rubber elements 10 and the drive motor 11 suspended from a support 12.
  • the supports 9 and 12 each run upwards to the frame, i.e. to the structure 2a.
  • excitation shafts are 5 and 6 with the adjustment mechanism 18 in a housing 19 stored, which in turn can be rotated in the drum 1 stored and over the rubber elements 8 with the support 9th connected is.
  • the control loop for the jump limitation is in FIG. 7 shown. It consists of an accelerometer 20, for example the vertical acceleration the roller 1 detects, where it is expedient a non-rotating part of the roller or roller suspension assigned.
  • the measured actual values are fed to an arithmetic unit 21 which determines the periodicity, in the present case, the duration of the vertical vibration component of the roller determined and a predetermined setpoint of reverse polarity overlaid. If the specified setpoint is exceeded, an actuator 22 receives a signal and actuates in turn, the adjusting mechanism via an actuating cylinder 23 18, such that the phase difference between exciter shafts 5 and 6 is adjusted that the vertical pressure force in favor of the horizontal Thrust decreases.
  • FIG. 8 shows the change in the vibration behavior, if the roller increases due to increasing ground rigidity jump starts.
  • the vertical acceleration component over time or plotted over the angle of rotation of the excitation waves in the right picture the vertical and horizontal Acceleration components in polar coordinates.
  • the curve shape shown an almost exact sine curve or an arc in polar coordinates under normal compression conditions.
  • With increasing ground rigidity leave both curves their ideal shape and finally the in Figure 8b configurations shown.
  • the upper limit value for the vertical acceleration component is about 40 m / s 2 to be entered in the control loop, so that the behavior shown in FIG. 8 b can never occur.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)
  • Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)
  • Soil Working Implements (AREA)
  • Excavating Of Shafts Or Tunnels (AREA)
  • Crushing And Grinding (AREA)

Abstract

The dynamic compression system uses at least one compression roller (1, 3) which is oscillated via a variable direction oscillation force, to provide a horizontal displacement force and/or a vertical compression force. The oscillation movement of the roller and/or an associated component is detected, with the vertical component of the oscillation force reduced when a fault in the basic movement is detected until the fault is eliminated. Pref. the amplitude, the acceleration and/or the period duration of the oscillation movement is detected.

Description

Die Erfindung betrifft ein Verfahren und eine Vorrichtung zum dynamischen Verdichten von Boden mit mindestens einer verfahrbaren Walze, die Schwingungsbewegungen durchführt, indem eine in ihrer Richtung verstellbare Schwingungskraft auf die Walze einwirkt, so daß wahlweise horizontale Schubkräfte und/oder vertikale Druckkräfte auf den Boden ausgeübt werden.The invention relates to a method and a device for dynamic compaction of soil with at least a movable roller that vibrates performs by an adjustable in its direction Vibrating force acts on the roller, so that either horizontal thrust and / or vertical Pressure forces are exerted on the ground.

Ein derartiges Verdichtungssystem ist durch die EP-A 530 546 der gleichen Anmelderin bekannt. Es hat den Vorteil, daß je nach der Bodenbeschaffenheit, der zu verdichtenden Schichttiefe und anderen Parametern wahlweise überwiegend mit Schubkräften oder mit vertikalen Druckkräften verdichtet werden kann.Such a compression system is described in EP-A 530 546 by the same applicant. It has that Advantage that depending on the nature of the soil compacting layer depth and other parameters optionally predominantly with thrust or with vertical Compressive forces can be compressed.

Der vorliegenden Anmeldung liegt die Aufgabe zugrunde, dieses Verdichtungssystem weiter zu verbessern und insbesondere eine Überverdichtung des Bodens mit lokaler Kornzertrümmerung und Verformung der Fahrbahn-Oberfläche auszuschließen.The present application is based on the task to further improve this compression system and in particular over-compaction of the soil with local Grain crushing and deformation of the road surface to exclude.

Diese Aufgabe wird hinsichtlich der Verfahrensmerkmale dadurch gelöst, daß die Schwingungsbewegung der Walze oder eines mit ihr verbundenen Teiles erfaßt wird und daß bei einer Störung der Wälzengrundschwingung der vertikale Anteil der Schwingungskraft bis zum annähernden Ausregeln der Störung verringert wird.This task is regarding the procedural features solved in that the vibratory movement of the roller or a part connected to it is detected and that in the event of a disturbance of the basic roller vibration vertical part of the vibration force up to the approximate Fixing the fault is reduced.

Die Erfindung geht dabei von der Erkenntnis aus, daß mit zunehmender Verdichtung des Bodens und dementsprechend zunehmender Bodenhärte die Verdichtungswalze zum Springen neigt, wodurch nicht nur die Verdichtungswalze mechanisch hoch beansprucht wird sondern auch die Verdichtungsqualität abnimmt. Der Fahrer kann dieses Springen meist nur unzureichend körperlich oder visuell wahrnehmen und den Verdichtungsvorgang dann abbrechen, was meistens zu spät ist. Demgegenüber gestattet die vorliegende Erfindung, den für das Springen und die Überverdichtung verantwortlichen Anteil der Schwingungsbewegung rechtzeitig zu reduzieren und die Verdichtung statt dessen verstärkt auf horizontale Schubkräfte umzustellen, bei denen ein Springen ausgeschlossen ist. Die Erfindung kann also einerseits als Antisprung-Riegelung, andererseits als Überverdichtungssperre angesehen werden . Sie gestattet es daher auch, mit höheren Schwingungsamplituden als bisher zu arbeiten, weil Beschädigungen der Walze durch harte Böden nicht mehr möglich sind.The invention is based on the knowledge that with increasing compaction of the soil and accordingly increasing soil hardness the compaction roller to Jumping tends to not only cause the compaction roller the compression quality is also subject to high mechanical stress decreases. The driver can do this Jumping is usually inadequate physically or visually perceive and then cancel the compaction process, which is mostly too late. In contrast, the present invention, for jumping and the Overdensification responsible part of the vibration movement reduce in time and compression instead increased horizontal thrust switch, where jumping is impossible is. On the one hand, the invention can be used as an anti-jump lock, on the other hand, as an over-compression barrier be considered . It therefore also allows work with higher vibration amplitudes than before, because damage to the roller from hard floors are no longer possible.

Zur Erfassung der durch das Springen ausgelösten Störungen der Walzengrundschwingung bieten sich dem Fachmann verschiedene Möglichkeiten. Es kann die Amplitude der Schwingungsbewegung oder eine Ableitung hiervon, insbesondere die Beschleunigung, erfaßt werden. So nimmt beispielsweise der vertikale Anteil der Beschleunigung bei nachlassendem Bodenkontakt der Walze zu.To record the disturbances caused by jumping the basic vibration of the roll are available to the expert various possibilities. It can be the amplitude the vibration movement or a derivative thereof, in particular the acceleration. So takes, for example, the vertical portion of the acceleration if the roller loses contact with the ground.

Es kann aber gleichermaßen auch die Periodendauer der Schwingungsbewegung erfaßt werden, da hier beim Springen nahezu eine Verdopplung eintritt.However, the period of the Vibration movement can be detected because here when jumping almost doubling occurs.

Schließlich ist es auch möglich, Störungen der Walzengrundschwingung durch eine Frequenzanalyse des abgestrahlten Luftschalles zu erfassen.Finally, it is also possible to disturb the basic vibration of the roller by a frequency analysis of the radiated To detect airborne noise.

Als Vorrichtung zur Durchführung des erfindungsgemäßen Verdichtungsverfahrens wird von einem Verdichtungsgerät mit wenigstens zwei parallel oder fluchtend zur Walzenachse angeordneten, gegensinnig synchron rotierenden Erregerwellen ausgegangen, deren Position und/oder Phasenlage derart versellbar ist, daß ihre resultierende Fliehkraft wahlweise horizontale Schubkräfte und/oder vertikale Druckkräfte auf den Boden ausübt. Das erfindungsgemäße Verfahren wird dann in der Weise realisiert, daß die Walze oder ein mit ihr verbundenes Teil mit einem Bewegungsfühler zur Erfassung der Schwingungsbewegung in Wirkverbindung steht und daß der Bewegungsfühler an einem Regelkreis angeschlossen ist, der bei einer Störung der Walzengrundschwingung die Position und/oder Phasenlage der Erregerwellen im Sinne einer Verringerung der vertikalen Druckkräfte verstellt.As a device for performing the invention Compaction process is done by a compactor with at least two parallel or aligned to the roller axis arranged, rotating in opposite directions synchronously Excitation waves, their position and / or phase position is so variable that its resulting Centrifugal force optionally horizontal thrust and / or exerts vertical pressure on the ground. The invention Process is then implemented in such a way that the roller or a part connected to it with a motion sensor to record the vibration movement is in operative connection and that the motion sensor is connected to a control loop that the position in the event of a disturbance of the basic roller vibration and / or phase position of the excitation waves in the sense adjusted to reduce the vertical pressure forces.

Aus konstruktiven Gründen empfiehlt es sich dabei, daß die Erregerwellen etwa horizontal nebeneinander angeordnet sind und die Verstellung zwischen horizontalen und vertikalen Fliehkräften durch Änderung der Phasenlage der Erregerwellen bewirkt wird, wie dies an sich bekannt ist. Meist stehen die Erregerwellen über Zahnräder miteinander in Wirkverbindung, so daß zur Verstellung der Phasenlage der einen Erregerwelle eine fixierbare Drehlagerung zwischen ihr und dem ihr zugeordneten Zahnrad eingesetzt werden kann. Diese Drehlagerung besteht zweckmäßig aus einer mit dem Zahnrad verbundenen Verstellwendel, in der axial verschraubbar eine Verstellachse steckt, die axial verschiebbar, aber drehfest mit der Erregerwelle verbunden ist. Die Phasenlage sollte dabei um über 150°, insbesondere bis nahezu 360° verstellbar sein.For design reasons, it is recommended that the excitation waves are arranged approximately horizontally next to each other are and the adjustment between horizontal and vertical centrifugal forces by changing the phase position of the excitation waves is effected like this in itself is known. The excitation shafts are usually above gear wheels in operative connection with each other so that for adjustment the phase position of an excitation wave is fixable Rotary bearing between it and the one assigned to it Gear can be used. This pivot bearing suitably consists of one connected to the gear Adjustable helix, axially screwable is an adjustment axis that is axially displaceable, however is rotatably connected to the excitation shaft. The phase position should be over 150 °, especially to almost Can be adjusted 360 °.

Eine andere Möglichkeit besteht darin, die Erregerwellen in einem Gestell zu lagern, das um eine zu ihnen parallele Achse verschwenkbar und in der gewünschten Schwenkposition feststellbar ist. Dadurch lassen sich gemäß der EP-A 530 546 ebenfalls wahlweise vertikale Druckkräfte und/oder horizontale Schubkräfte erzeugen. Ausgehend von einer Bezugsposition des Gestelles mit vertikal übereinander angeordneten Erregerwellen sollte das Gestell dabei beidseits, insbesondere bis etwa 90° verstellbar sein.Another possibility is the excitation waves to store in a rack that is one to them parallel axis swiveling and in the desired Swivel position can be determined. This allows according to EP-A 530 546 also optionally vertical Generate pressure forces and / or horizontal thrust forces. Starting from a reference position of the frame with excitation waves arranged vertically one above the other the frame on both sides, in particular up to about 90 ° be adjustable.

In beiden Fällen ist es besonders zweckmäßig, die Einstellung der Phasenlage oder die Einstellung der Position der Erregerwellen in Abhängigkeit von der Fahrtrichtung vorzunehmen. Dadurch unterstützt ein Anteil der in der Walze erzeugten Schwingungskraft den Fahrantrieb der Walze statt ihm entgegenzuwirken.In both cases, it is particularly useful to adjust the setting the phase position or the setting of the position of excitation waves depending on the direction of travel to make. This supports a portion the vibration force generated in the roller drives the drive the roller instead of counteracting it.

Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung anhand von Ausführungsbeispielen; dabei zeigt:

Figur 1
eine Seitenansicht des Verdichtungsgerätes in seiner Gesamtheit;
Figur 2
eine schematische Darstellung zweier Erregerwellen zur Erzeugung vertikaler Druckkräfte;
Figur 3
eine Darstellung entsprechend Figur 2 bei veränderter Phasenlage zur Erzeugung horizontaler Schubkräfte;
Figur 4
eine ähnliche schematische Darstellung für kombinierte Verdichtung bei Vorwärtsfahrt;
Figur 5
eine entsprechende Darstellung bei der Rückwärtsfahrt
Figur 6
einen Axialschnitt durch eine Walze
Figur 7
den Regelkreis für die Sprungbegrenzung und
Figur 8
die Änderung der Walzenschwingung beim Springen.
Further features and advantages of the invention will become apparent from the following description using exemplary embodiments; shows:
Figure 1
a side view of the compactor in its entirety;
Figure 2
a schematic representation of two excitation waves for generating vertical pressure forces;
Figure 3
a representation corresponding to Figure 2 with changed phase position to generate horizontal thrust;
Figure 4
a similar schematic representation for combined compression when driving forward;
Figure 5
a corresponding representation when reversing
Figure 6
an axial section through a roller
Figure 7
the control loop for the jump limitation and
Figure 8
the change in roller vibration when jumping.

In Figur 1 erkennt man ein Verdichtungsgerät mit zwei Rüttelwalzen, das äußerlich den herkömmlichen Aufbau aufweist, also aus einer vorderen Walze 1 mit Aufbau 2a und Führerstand und aus einer hinteren Walze 3 mit Aufbau 2b besteht, wobei die beiden Aufbauten 2a und 2b zur Lenkbarkeit des Fahrzeuges über ein vertikales Schwenklager 4 miteinander verbunden sind.In Figure 1 you can see a compactor with two Vibrating rollers, the outside of the conventional structure has, so from a front roller 1 with structure 2a and driver's cab and from a rear roller 3 with structure 2b, the two structures 2a and 2b to steer the vehicle via a vertical Swivel bearings 4 are interconnected.

Figur 2 zeigt schematisch die beiden Erregerwellen 5 und 6, die jeweils im Inneren der Walze 1 und 3 angeordnet sind. Bei der hier beschriebenen Alternative liegen beide Erregerwellen horizontal nebeneinander und sie behalten diese Position unabhängig von der Walzendrehung und unabhängig davon, ob vertikale Druckkräfte, horizontale Scherkräfte oder eine Kombination hiervon erzeugt werden soll. Sie drehen gegensinnig, können aber hinsichtlich der Phasenlage ihrer Unwuchten relativ zueinander verdreht werden.FIG. 2 schematically shows the two excitation waves 5 and 6, each arranged inside the roller 1 and 3 are. In the alternative described here both excitation waves lie horizontally next to each other and they keep this position regardless of the roll rotation and regardless of whether vertical pressure forces, horizontal shear forces or a combination thereof should be generated. They turn in opposite directions, can but relative to the phase position of their unbalances be twisted towards each other.

Bei der in Figur 2 dargestellten Phasenlage erzeugen die Erregerwellen eine resultierende Schwingungskraft, die ausschließlich in Vertikalrichtung wirkt, und zwar periodisch nach oben und nach unten. Dies läßt sich leicht durch die rechts abgebildeten, verkleinerten Schemazeichnungen erkennen, wo die Erregerwellen jeweils um 90° weitergedreht sind. Man sieht sofort, daß die Horizontalkomponenten der von den Erregerwellen erzeugten Fliehkräfte sich jeweils aufheben, wogegen sich die Vertikalkomponenten addieren. Infolge dessen wird eine sinusförmige Schwingungskraft erzeugt, entsprechend dem in der Mitte gezeigten Kurvenverlauf.Generate at the phase position shown in Figure 2 the excitation waves a resulting vibration force, that works exclusively in the vertical direction, namely periodically up and down. This can be done slightly reduced by the ones shown on the right Schematic drawings recognize where the excitation waves each are rotated through 90 °. You can see immediately that the horizontal components of those generated by the excitation waves Centrifugal forces cancel each other, against each other add the vertical components. As a result generates a sinusoidal vibration force, accordingly the curve shown in the middle.

Wird demgegenüber die Phasenlage der beiden Erregerwellen relativ zueinander um 180° verändert, so erhält man die in Figur 3 dargestellte Situation. Geht man wiederum die vier verkleinerten Schemazeichnungen auf der rechten Seite durch, so wird deutlich, daß sich jetzt die Vertikalkomponenten der Fliehkräfte jeweils aufheben, wogegen sich die Horizontalkomponenten addieren. Man erzeugt somit abwechselnd vorwärts und rückwärts gerichtete Horizontalkräfte entsprechend dem sinusförmigen Verlauf in der mittleren Abbildung von Figur 3.In contrast, the phase position of the two excitation waves changed relative to each other by 180 °, you get the situation shown in Figure 3. If you go again the four reduced schematic drawings on the right side, it becomes clear that now cancel the vertical components of the centrifugal forces, against which the horizontal components add up. So you alternate forwards and backwards directed horizontal forces corresponding to the sinusoidal Course in the middle figure of Figure 3.

Der Vollständigkeit halber sei erwähnt, daß die Erregerwellen bei der in Figur 3 dargestellten Phasenrelation zusätzlich auch ein Drehmoment um die Walzenachse erzeugen, das abwechselnd in Vorwärts- und Rückwärtsrichtung wirkt. Dieses Drehmoment wird über elastische Lager aufgefangen.For the sake of completeness it should be mentioned that the excitation waves in the phase relation shown in FIG. 3 additionally a torque around the roller axis generate that alternately in the forward and reverse directions works. This torque is about elastic Camp caught.

Während die beiden vorgenannten Figuren jeweils Extremstellungen der Phasenlage zeigen, bei denen entweder reine vertikale Druckkräfte oder reine horizontale Schubkräfte auf die Walze einwirken, betreffen die Figuren 4 und 5 Zwischenstellungen, bei denen gleichzeitig Druckkräfte wie auch Schubkräfte erzeugt werden. Dies hat sich im praktischen Einsatz als besonders zweckmäßig erwiesen. Ausgehend von Figur 2 ist hier die Erregerwelle 6 nur um etwa 45° vorgedreht worden (Figur 4) oder um 45° zurückgedreht worden (Figur 5). Man erhält dann eine relativ große Vertikalkraftkomponente V bei kleiner Horizontalkraftkomponente H entsprechend dem jeweils rechts daneben dargestellten sinusförmigen Verlauf. Der Unterschied zwischen beiden Fig. 4 und Fig. 5 besteht darin, daß der resultierende Horizontalkraft-Anteil an die gewünschte Fahrtrichtung angepaßt ist.While the two aforementioned figures each have extreme positions show the phasing where either pure vertical pressure forces or pure horizontal The figures affect shear forces on the roller 4 and 5 intermediate positions, at the same time Pressure forces as well as thrust forces are generated. This has proven special in practical use proven appropriate. Starting from Figure 2 here is the Excitation shaft 6 has only been turned forward by about 45 ° (Figure 4) or turned back by 45 ° (Figure 5). You get then a relatively large vertical force component V with a small horizontal force component H accordingly the sinusoidal one shown on the right Course. The difference between both Fig. 4 and Fig. 5 is that the resulting horizontal force component adapted to the desired direction of travel is.

Um die Verstellung der Phasenlage beider Erregerwellen relativ zueinander zu verdeutlichen, wird nunmehr auf Figur 6 eingegangen. Sie zeigt einen Vertikalschnitt durch die Walze 1, wobei jedoch die beiden Erregerwellen mit samt ihrer Lagerung um 90° in die Zeichnungsebene hineingeklappt worden sind.To adjust the phase position of both excitation waves to clarify relative to each other is now on Figure 6 received. It shows a vertical section through the roller 1, however, the two excitation waves with their storage at 90 ° to the drawing level have been folded in.

Die Walze 1 ist in an sich bekannter Weise an der einen Stirnseite über Kugellager 7 und Gummielemente 8 an einer Stütze 9, an der anderen Seite über Gummielemente 10 und den Antriebsmotor 11 an einer Stütze 12 aufgehängt. Die Stützen 9 und 12 laufen jeweils nach oben zum Rahmen, also zu dem Aufbau 2a.The roller 1 is in a manner known per se at one Front side on ball bearings 7 and rubber elements 8 a support 9, on the other side via rubber elements 10 and the drive motor 11 suspended from a support 12. The supports 9 and 12 each run upwards to the frame, i.e. to the structure 2a.

Im Inneren der Walze und ihr gegenüber verdrehbar sind die beiden Erregerwellen 5 und 6 angeordnet. Ihr Antrieb erfolgt über einen Vibrationsmotor 13, der die Erregerwelle 5 direkt und die andere Erregerwelle über ein Zahnradpaar 14, 15 in Rotation versetzt. Wesentlich ist nun, daß die Erregerwelle 6 relativ zum Zahnrad 15 verdreht werden kann, und zwar mittels einer mit dem Zahnrad verbundenen Verstellwendel 16. Diese Verstellwendel weist einen oder mehrere Schraubengänge 16a auf und wird in ihrem Inneren von einer Verstellachse 17 durchquert. Diese Verstellachse 17 trägt ihrerseits einen oder mehrere radial vorstehende Bolzen 17a, die den Schraubengang 16a durchqueren und eine formschlüssige Verbindung zwischen Zahnrad 15 und Verstellachse 17 gestatten. Die Verstellachse 17 ist ihrerseits durch einen Verstellmechanismus 18 axial verschiebbar, jedoch gegenüber diesem Verstellmechanismus frei drehbar. Andererseits ist sie axial verschiebbar, aber drehfest mit der Erregerwelle 6 verbunden.Inside the roller and are rotatable relative to it the two excitation shafts 5 and 6 are arranged. Your drive takes place via a vibration motor 13, which Excitation wave 5 directly and the other excitation wave over a pair of gears 14, 15 set in rotation. Essential is now that the excitation shaft 6 relative to the gear 15th can be rotated by means of one with the Gear connected adjusting helix 16. This adjusting helix has one or more screw threads 16a and is in its interior by an adjustment axis 17th traverses. This adjustment axis 17 in turn carries one or more radially projecting bolts 17a which cross the screw passage 16a and a positive one Connection between gear 15 and adjustment axis Allow 17. The adjustment axis 17 is in turn through an adjustment mechanism 18 axially displaceable, however freely rotatable compared to this adjustment mechanism. On the other hand, it is axially displaceable but non-rotatable connected to the excitation shaft 6.

Auf diese Weise ist es durch axiale Verschiebung der verstellachse 17 möglich, daß sie sich entlang dem Schraubengang 16a in die mit dem Zahnrad verbundene Verstellwendel 16 hineinschraubt oder aus ihr herausschraubt, wobei die drehfest mit der Verstellachse 17 verbundene Erregerwelle 6 in der einen oder in der anderen Richtung relativ zum Zahnrad 15 verdreht wird. Damit wird ihre Phasenlage relativ zur Phasenlage der Erregerwelle 5 verstellt und es lassen sich die in den Figuren 2 bis 5 dargestellten Zuordnungen und beliebige Zwischenwerte einstellen. Der gesamte Verdrehwinkel der Erregerwelle 6 relativ zur Erregerwelle 5 beträgt nahezu 360°.In this way it is due to axial displacement of the adjustment axis 17 possible that they along the Screw 16a in the connected to the gear Screws 16 or unscrewed from it, the rotationally fixed with the adjustment axis 17th connected exciter shaft 6 in one or in the other direction is rotated relative to the gear 15. This makes their phase position relative to the phase position of the Exciter shaft 5 adjusted and it can be in the Figures 2 to 5 shown assignments and any Set intermediate values. The total twist angle of the Exciter shaft 6 relative to exciter shaft 5 is almost 360 °.

Aus Stabilitätsgründen sind die Erregerwellen 5 und 6 mit samt dem Verstellmechanismus 18 in einem Gehäuse 19 gelagert, das seinerseits verdrehbar in der Trommel 1 gelagert und über die Gummielemente 8 mit der Stütze 9 verbunden ist.For reasons of stability, excitation shafts are 5 and 6 with the adjustment mechanism 18 in a housing 19 stored, which in turn can be rotated in the drum 1 stored and over the rubber elements 8 with the support 9th connected is.

Der Regelkreis für die Sprungbegrenzung ist in Figur 7 dargestellt. Er besteht aus einem Beschleunigungsaufnehmer 20, der beispielsweise die Vertikalbeschleunigung der Walze 1 erfaßt, wobei er zweckmäßigerweise einem nicht drehenden Teil der Walze oder der Walzenaufhängung zugeordnet ist. Die gemessenen Istwerte werden einem Rechenwerk 21 zugeführt, das die Periodizität, im vorliegenden Fall also die Zeitdauer der vertikalen Schwingungskomponente der Walze ermittelt und einem vorgegebenen Sollwert umgekehrter Polarität überlagert. Wird der vorgegebene Sollwert überschritten, so erhält ein Stellglied 22 ein Signal und betätigt seinerseits über einen Stellzylinder 23 den Verstellmechanismus 18, derart, daß die Phasendifferenz zwischen den Erregerwellen 5 und 6 so verstellt wird, daß die vertikale Druckkraft zugunsten der horizontalen Schubkraft abnimmt.The control loop for the jump limitation is in FIG. 7 shown. It consists of an accelerometer 20, for example the vertical acceleration the roller 1 detects, where it is expedient a non-rotating part of the roller or roller suspension assigned. The measured actual values are fed to an arithmetic unit 21 which determines the periodicity, in the present case, the duration of the vertical vibration component of the roller determined and a predetermined setpoint of reverse polarity overlaid. If the specified setpoint is exceeded, an actuator 22 receives a signal and actuates in turn, the adjusting mechanism via an actuating cylinder 23 18, such that the phase difference between exciter shafts 5 and 6 is adjusted that the vertical pressure force in favor of the horizontal Thrust decreases.

Figur 8 zeigt die Veränderung im Schwingungsverhalten, wenn die Walze durch zunehmende Bodensteifigkeit zu springen beginnt. Dabei ist im linken Bild von Figur 8a die vertikale Beschleunigungkomponente über der Zeit bzw. über dem Verdrehwinkel der Erregerwellen aufgetragen, im rechten Bild die vertikalen und horizontalen Beschleunigungskomponenten in Polarkoordinaten. Der dargestellte Kurvenverlauf - eine nahezu genaue Sinuskurve bzw. ein Kreisbogen in Polarkoordinaten - stellt sich unter normalen Verdichtungsbedingungen ein. Mit zunehmender Bodensteifigkeit verlassen beide Kurvenzüge ihre Idealform und es stellen sich schließlich die in Figur 8b gezeigten Konfigurationen ein. Insbesondere nimmt die Beschleunigung in Vertikalrichtung deutlich zu und anhand der Polarkoordinaten erkennt man, daß aus dem Kreis zwei Ellipsen werden, die Periodendauer sich also verdoppelt. Ursächlich hierfür ist das Springen der Walze, weil jeweils einer Umdrehung der Walze in der Luft eine Umdrehung mit Bodenkontakt folgt.FIG. 8 shows the change in the vibration behavior, if the roller increases due to increasing ground rigidity jump starts. Here is in the left picture of Figure 8a the vertical acceleration component over time or plotted over the angle of rotation of the excitation waves, in the right picture the vertical and horizontal Acceleration components in polar coordinates. Of the curve shape shown - an almost exact sine curve or an arc in polar coordinates under normal compression conditions. With increasing ground rigidity leave both curves their ideal shape and finally the in Figure 8b configurations shown. Especially takes the acceleration in the vertical direction clearly to and from the polar coordinates you can see that from the circle becomes two ellipses, the period itself so doubled. The reason for this is jumping the roller because one turn of the roller at a time the air follows a turn with contact with the ground.

Im gezeigten Beispiel wird man als oberen Grenzwert für die vertikale Beschleunigungskomponente etwa 40m/s2 in den Regelkreis eingeben, damit es keinesfalls zu dem in Figur 8b gezeigten Verhalten kommen kann.In the example shown, the upper limit value for the vertical acceleration component is about 40 m / s 2 to be entered in the control loop, so that the behavior shown in FIG. 8 b can never occur.

Auf diese Weise wird ein Springen der Verdichtungswalze automatisch eliminiert und das Verdichtungsergebnis ist nicht mehr von der Aufmerksamkeit und Zuverlässigkeit des Fahrers abhängig.This will cause the compaction roller to crack automatically eliminated and the compaction result is no more of attention and reliability dependent on the driver.

Wenn sich die Bodenbeschaffenheit nicht stark ändert, liegt es auch im Rahmen der Erfindung, auf den beschriebenen Regelvorgang zu verzichten und statt dessen nur einige feste Zwischenpositionen für die Phasendifferenz zwischen den beiden Erregerwellen vorzugeben. In diesem Fall würde die Erfassung von Störungen der Walzengrundschwingung (Sprungbetrieb) durch die Bedienungsperson erfolgen oder unter Verwendung von bekannten Verdichtungsmeßgeräten und bei Störungen würde dann manuell oder automatisch die Phasendifferenz auf den nächsten Zwischenwert eingestellt werden, bei dem geringere vertikale Druckkräfte erzeugt werden.If the soil does not change much, it is also within the scope of the invention on the described To do without the control process and instead just a few fixed intermediate positions for the phase difference between the two excitation waves. In in this case, the detection of disturbances of the basic roll vibration (Jump operation) by the operator take place or using known Compression meters and malfunctions would then manually or automatically the phase difference on the next intermediate value can be set at the lower one vertical pressure forces are generated.

Claims (11)

  1. Method for dynamically compacting soil with at least one mobile roller (1, 3) which executes oscillatory movements as a result of an oscillation force which can be adjusted in its direction acting on the roller, so that horizontal shear forces and/or vertical compressive forces are selectively exerted on the soil, characterised in that the oscillatory movement of the roller (1, 3) or of a part connected to the latter is detected, and that, in the case of a disturbance of the fundamental mode of roller oscillation, the vertical component of the oscillation force is reduced until the disturbance is corrected.
  2. Method according to claim 1, characterised in that the amplitude, the acceleration or the period of the oscillatory movement of the roller is detected.
  3. Apparatus for dynamically compacting soil with at least one mobile roller (1, 3) which, in order to produce an oscillatory movement, comprises at least two exciting shafts (5, 6) which are disposed parallel to or in alignment with the roller axis, which rotate in synchronism in opposite directions and the position and/or phase position of which can be adjusted such that their resulting centrifugal force selectively exerts horizontal shear forces and/or vertical compressive forces on the soil, in particular for carrying out the method according to ciaim 1 or 2, characterised in that the roller (1, 3j or a part connected to the latter is operatively connected to a movement sensor for detecting the oscillatory movement, and that the movement sensor is connected to a control circuit which, in the case of a disturbance of the fundamental mode of roller oscillation, adjusts the position and/or phase position of the exciting shafts (5, 6) in the sense of a reduction of the vertical compressive forces.
  4. Apparatus according to claim 3, characterised in that the exciting shafts (5, 6) are disposed approximately horizontally side by side and can be adjusted in terms of their phase position relative to one another.
  5. Apparatus according to claim 4, wherein the exciting shafts are operatively connected via gearwheels,
    characterised in that at least one of the exciting shafts (6) is connected to its gearwheel (15) via a rotary mounting (16, 17), which can be fixed, to adjust its phase position.
  6. Apparatus according to claim 5, characterised in that the rotary mounting consists of an adjusting helix (16) which is connected to the gearwheel (15) and in which an adjusting pin (17) is inserted such that it can be axially screwed , which pin is connected to the exciting shaft (6) in an axially displaceable, yet non-rotatable manner.
  7. Apparatus according to one of claims 3 to 6,
    characterised in that the phase position can be adjusted by more than 150°, in particular up to approximately 360°.
  8. Apparatus according to claim 3, characterised in that the exciting shafts are mounted in a frame which can be pivoted about an axis parallel to the exciting shafts.
  9. Apparatus according to claim 8, characterised in that, starting from a reference position with exciting shafts disposed vertically one above the other, the frame can be adjusted on both sides, in particular up to approximately 90°.
  10. Apparatus according to one of claims 3 to 9,
    characterised in that the phase position or the position of the exciting shafts (5, 6) is set in accordance with the direction of travel of the roller.
  11. Apparatus according to one of claims 3 to 10,
    characterised in that the movement sensor is associated with a non-rotatable part of the roller (1, 3) or its mounting.
EP95110476A 1994-09-29 1995-07-05 Method and apparatus for dynamically compacting of soil Expired - Lifetime EP0704575B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4434779 1994-09-29
DE4434779A DE4434779A1 (en) 1994-09-29 1994-09-29 Method and device for dynamically compacting soil

Publications (3)

Publication Number Publication Date
EP0704575A2 EP0704575A2 (en) 1996-04-03
EP0704575A3 EP0704575A3 (en) 1996-08-21
EP0704575B1 true EP0704575B1 (en) 1998-07-22

Family

ID=6529490

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95110476A Expired - Lifetime EP0704575B1 (en) 1994-09-29 1995-07-05 Method and apparatus for dynamically compacting of soil

Country Status (8)

Country Link
US (1) US5797699A (en)
EP (1) EP0704575B1 (en)
JP (1) JP3193988B2 (en)
AT (1) ATE168731T1 (en)
CA (1) CA2157428C (en)
DE (2) DE4434779A1 (en)
DK (1) DK0704575T3 (en)
ES (1) ES2122404T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013020690A1 (en) 2013-12-03 2015-06-03 Bomag Gmbh Vibration generator for a vibratory compactor and construction machine with such a vibration exciter

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19529115A1 (en) * 1995-08-08 1997-03-06 Wacker Werke Kg Vibration mechanism, particularly for use in soil compaction
FR2748500B1 (en) * 1996-05-09 1998-08-07 Vaillant Christian DEVICE AUTHORIZING THE CONTROL, AND THE VARIATION IN THE AMPLITUDE OF THE VIBRATIONS APPLIED TO THE ROTATING COMPACTOR ROLLERS
JP3126986B2 (en) * 1996-06-12 2001-01-22 株式会社小松製作所 Crawler type vibration compaction machine
JPH10176305A (en) * 1996-12-17 1998-06-30 Hitachi Constr Mach Co Ltd Tire roller
SE513571C2 (en) * 1999-03-18 2000-10-02 Ulf Bertil Andersson Apparatus for generating mechanical vibrations
US6558072B2 (en) 2001-05-15 2003-05-06 Caterpillar Paving Products Inc. Speed control system for a work machine
US6750621B2 (en) * 2001-09-10 2004-06-15 Sauer-Danfoss Inc. Method and system for non-contact sensing of motion of a roller drum
US6637280B2 (en) 2001-10-31 2003-10-28 Caterpillar Paving Products Inc Variable vibratory mechanism
US7089823B2 (en) 2002-05-29 2006-08-15 Caterpillar Paving Products Inc. Vibratory mechanism controller
CN100393942C (en) * 2003-10-11 2008-06-11 陈启方 Vibration excitor for intelligent vibrating road roller
CN100393941C (en) * 2003-10-15 2008-06-11 陈启方 Vibration exciter for vertical-vibrating road roller
EP1568420B1 (en) * 2004-02-29 2018-08-15 BOMAG GmbH Device and method for controlling a vibrating machine
CZ299778B6 (en) * 2007-07-04 2008-11-19 Ammann Czech Republic A. S. Tandem-type vibratory roller
DE102009055950A1 (en) * 2009-11-27 2011-06-01 Hamm Ag Compactor for compacting grounds, has movable drum rotatable around drum axle, where drum part of drum comprises vibration generator that is supported at distance from drum axle in drum
US20110158745A1 (en) * 2009-12-31 2011-06-30 Caterpillar Paving Products Inc. Vibratory system for a compactor
DE102011088567A1 (en) * 2011-12-14 2013-06-20 Hamm Ag Device for detecting the movement of a compactor roller of a soil compactor
US8608403B2 (en) 2012-03-28 2013-12-17 Caterpillar Paving Products Inc. Magnetic vibratory compactor
DE102012024104A1 (en) * 2012-12-10 2014-06-12 Bomag Gmbh compaction
CN103498464B (en) * 2013-10-19 2015-05-06 浦江县科创进出口有限公司 Rolling system
JP6214428B2 (en) * 2014-02-26 2017-10-18 大成ロテック株式会社 Compaction device and compaction ground construction method
DE102014205503A1 (en) * 2014-03-25 2015-10-01 Hamm Ag Method for correcting a measured value profile by eliminating periodically occurring measuring artifacts, in particular in the case of a soil compactor
US9534995B2 (en) * 2014-06-11 2017-01-03 Caterpillar Paving Products Inc. System and method for determining a modulus of resilience
CN104749054B (en) * 2015-03-13 2017-05-03 同济大学 Three-dimensional controllable dynamic compaction simulated centrifuge testing mechanical arm device
US9587361B2 (en) * 2015-04-08 2017-03-07 Caterpillar Paving Products Inc. Temperature dependent auto adaptive compaction
DE102015120874A1 (en) * 2015-12-02 2017-06-08 Hamm Ag Method for determining the compaction state of a subsoil
DE102016109888A1 (en) * 2016-05-30 2017-11-30 Hamm Ag Soil compactor and method for operating a soil compactor
DE102017122370A1 (en) * 2017-09-27 2019-03-28 Hamm Ag oscillation module
SE543161C2 (en) * 2018-09-28 2020-10-13 Dynapac Compaction Equipment Ab Method of controlling operation of a vibratory roller
CN109632217B (en) * 2018-10-25 2020-10-13 重庆交通大学 Continuous detection method for bearing capacity of pavement structure
AT523034A3 (en) * 2019-09-18 2024-02-15 Plasser & Theurer Export Von Bahnbaumaschinen Gmbh Machine and method for stabilizing a track

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2057279C3 (en) * 1970-11-21 1979-06-07 Losenhausen Maschinenbau Ag, 4000 Duesseldorf Soil compacting device
US3741820A (en) * 1970-12-07 1973-06-26 A Hebel Method for stress relieving metal
DE2554013C3 (en) * 1975-12-01 1984-10-25 Koehring Gmbh - Bomag Division, 5407 Boppard Process for dynamic soil compaction
US4103554A (en) * 1976-03-12 1978-08-01 Thurner Heinz F Method and a device for ascertaining the degree of compaction of a bed of material with a vibratory compacting device
FR2390546A1 (en) * 1977-05-09 1978-12-08 Albaret Sa METHOD AND DEVICE FOR FREQUENCY ADJUSTMENT OF VIBRATIONS APPLIED TO A SOIL FOR A COMPACTION MACHINE, AND COMPACTION MACHINE EQUIPPED WITH SUCH A DEVICE
SE426719B (en) * 1980-12-03 1983-02-07 Thurner Geodynamik Ab PROCEDURE AND DEVICE FOR PACKING A MATERIAL LAYER
AT376728B (en) * 1982-02-17 1984-12-27 Voest Alpine Ag UNBALANCE ARRANGEMENT FOR GENERATING VIBRATIONS
SE432792B (en) * 1982-04-01 1984-04-16 Dynapac Maskin Ab PROCEDURE AND DEVICE FOR ACHIEVING OPTIMAL PACKAGING DEVICE WHEN PACKING DIFFERENT MATERIALS LIKE ASPHALT, EARTH ETC Means a vibrating roller
DE3421824C2 (en) * 1984-06-13 1986-07-17 CASE VIBROMAX GmbH & Co KG, 4000 Düsseldorf Device for checking the compaction in vibration compaction equipment
DE3806897A1 (en) * 1988-03-03 1989-09-14 Wacker Werke Kg Vibration exciter
DE4116632A1 (en) * 1991-05-22 1992-11-26 Matthias Reck Arrangement for rotation direction and synchronisation error detection - has sensors mounted at offset positions about rotation axis of vibration machine imbalance weights relative to main vibration direction, and has phase analyser
DE4129182A1 (en) * 1991-09-03 1993-03-04 Bomag Gmbh COMPRESSOR
SE501040C2 (en) * 1993-03-08 1994-10-24 Thurner Geodynamik Ab Method and apparatus for controlling the vibration movement of a roller when packing a support such as soil, road banks, asphalt, etc.

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013020690A1 (en) 2013-12-03 2015-06-03 Bomag Gmbh Vibration generator for a vibratory compactor and construction machine with such a vibration exciter
EP2881516A1 (en) 2013-12-03 2015-06-10 BOMAG GmbH & Co. OHG Road roller
US9334613B2 (en) 2013-12-03 2016-05-10 Bomag Gmbh Vibration exciter for a vibration compactor and construction machine having such a vibration exciter
EP2881516B1 (en) 2013-12-03 2016-08-31 BOMAG GmbH & Co. OHG Road roller

Also Published As

Publication number Publication date
DE59502876D1 (en) 1998-08-27
CA2157428C (en) 2004-01-13
DK0704575T3 (en) 1998-11-09
ES2122404T3 (en) 1998-12-16
JP3193988B2 (en) 2001-07-30
CA2157428A1 (en) 1996-03-30
US5797699A (en) 1998-08-25
EP0704575A2 (en) 1996-04-03
EP0704575A3 (en) 1996-08-21
DE4434779A1 (en) 1996-04-04
ATE168731T1 (en) 1998-08-15
JPH08105011A (en) 1996-04-23

Similar Documents

Publication Publication Date Title
EP0704575B1 (en) Method and apparatus for dynamically compacting of soil
EP0530546B1 (en) Compacting apparatus
EP3252232B2 (en) Soil compactor and method for operating same
DE3805585C2 (en) Vibration compactor with double rollers
EP0789801B1 (en) Vibratory roller with at least one tyre having a built-in twin-shaft vibration generator
EP2627826B1 (en) Method for determinig the rigidity and/or the damping of the region of a solidity
DE69100684T2 (en) Vibratory pile driver.
DE3413091C2 (en)
EP2881516A1 (en) Road roller
DE102004037617A1 (en) Steering device equipped with a transmission ratio adjusting mechanism for use in a motor vehicle
EP3992364B1 (en) Method for compacting asphalt material
DE102013014122A1 (en) steering stop
DE602005000165T2 (en) Electric power steering device for a motor vehicle, steering arrangement with such a power steering device and equipped with such a steering arrangement motor vehicle
DE112017008221T5 (en) Surface compaction machine with concentrically arranged eccentric masses
EP3568524B1 (en) Roller for compacting soil and method for generating an oscillating image of a roller for compacting soil
WO2000061344A1 (en) Internal vibration device with variable vibration amplitude
DE102004014750A1 (en) Soil compacting device
EP1580066B1 (en) Construction vehicle for soil working with a pair of rear view mirrors
EP2242590B1 (en) Unbalance exciter with one or more rotatable unbalances
EP1534439B1 (en) Vibration exciter for soil compacting devices
DE102019214894B4 (en) STEERING CONTROL DEVICE AND POWER STEERING DEVICE
EP0945187B1 (en) Compacting installation with vibratory drive
WO2001019535A1 (en) Vibration exciter for ground compacting devices
EP0411349A1 (en) Machine for soil compacting
WO2024110201A1 (en) Stabilising assembly and method for stabilising a track

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

17P Request for examination filed

Effective date: 19960917

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

17Q First examination report despatched

Effective date: 19971024

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB IT LI NL SE

REF Corresponds to:

Ref document number: 168731

Country of ref document: AT

Date of ref document: 19980815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: COM PAT AG

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19980730

REF Corresponds to:

Ref document number: 59502876

Country of ref document: DE

Date of ref document: 19980827

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2122404

Country of ref document: ES

Kind code of ref document: T3

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: ROTTMANN, ZIMMERMANN + PARTNER AG

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: BOMAG GMBH

Free format text: BOMAG GMBH#INDUSTRIEGEBIET HELLERWALD#D-56154 BOPPARD (DE) -TRANSFER TO- BOMAG GMBH#INDUSTRIEGEBIET HELLERWALD#D-56154 BOPPARD (DE)

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 20110725

Year of fee payment: 17

Ref country code: CH

Payment date: 20110714

Year of fee payment: 17

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20120725

Year of fee payment: 18

Ref country code: SE

Payment date: 20120727

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20120726

Year of fee payment: 18

Ref country code: FR

Payment date: 20120731

Year of fee payment: 18

Ref country code: IT

Payment date: 20120724

Year of fee payment: 18

Ref country code: BE

Payment date: 20120725

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20120724

Year of fee payment: 18

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20120710

Year of fee payment: 18

BERE Be: lapsed

Owner name: *BOMAG G.M.B.H.

Effective date: 20130731

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20140201

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20130731

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 168731

Country of ref document: AT

Kind code of ref document: T

Effective date: 20130705

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20130705

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20140331

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140201

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130705

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130706

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130705

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130705

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20140808

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130731

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20140715

Year of fee payment: 20

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130706

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 59502876

Country of ref document: DE